Characterization Well R-25 Geochemistry Report Alamos National Labs/Genera… · Characterization Well R-25 Geochemistry Report ER2004-0072 v May 2005 List of Acronyms and Abbreviations

LA-14198-MS

Approved for public release; distribution is unlimited.

/J '•J J Los Alamos

NATIONAL LABORATORY --EST.1943 --

Characterization Well R-25 Geochemistry Report

11111111111111111111111111111111111 Los Alamos National Laboratory is operated by the U11ivcrsity of California for the United States D1 14532

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the Regents of the University of California, the United States Government nor any agency thereof, nor any of their employees make any warranty, express or implied, or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represent that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the Regents of the University of California, the United States Government, or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the Regents of the University of California, the United States Government, or any agency thereof. Los Alamos National Laboratory strongly supports academic freedom and a research-er's right to publish; as an institution, however, the Laboratory does not endorse the viewpoint of a publication or guarantee its technical correctness.

Produced by the Groundwater Protection Program

Cover photo shows a modified Foremost DR-25 dual-rotary drill rig. The DR-24 is one of several drill-rig types being used for drilling, well installation, and well development in support of the Los Alamos National Laboratory Hydrogeologic Workplan. The Hydrogeologic Workplan is jointly funded by the Environmental Restoration Project and Defense Programs to characterize groundwater flow beneath the 43-square-mile area of the Laboratory and to assess the impact of Laboratory activities on groundwater quality. The centerpiece of the Hydrologic Workplan is the installation of up to 32 deep wells in the regional aquifer.

An Affirmative Action/Equal Opportunity Employer

A Department of EnergyEnvironmental Cleanup Program

Characterization Well R-25Geochemistry Report

by Patrick Longmire

LA-14198-MSMay 2005

ER2004-0072

Produced by the Groundwater Protection Program

Author: Patrick Longmire

ER2004-0072 iii May 2005

TABLE OF CONTENTS

1.0 INTRODUCTION......................................................................................................................................1

2.0 DRILLING METHODS AND WELL DESIGN.........................................................................................1

2.1 Drilling Methods ...........................................................................................................................12.2 Well Design ..................................................................................................................................3

3.0 HYDROGEOLOGY..................................................................................................................................3

3.1 Hydrostratigraphy.........................................................................................................................3

4.0 FIELD SAMPLING AND ANALYTICAL METHODS .............................................................................3

4.1 Field Sampling Methods ..............................................................................................................34.2 Field Parameters..........................................................................................................................54.3 Analytical and Validation Methods ..............................................................................................8

4.3.1 Analytical Methods........................................................................................................84.3.2 Validation Methods .......................................................................................................9

5.0 GROUNDWATER ANALYTICAL RESULTS.........................................................................................9

5.1 Major Ions, Metals, Radionuclides, Organic Compounds, and Stable Isotopes.....................105.2 Comparison to Wells CdV-R-15-3, CdV-R-37-2, and R-19 .....................................................435.3 Representiveness of Data .........................................................................................................44

6.0 GROUNDWATER GEOCHEMICAL CALCULATIONS.......................................................................44

6.1 Computer Program Selection ....................................................................................................446.2 Speciation Calculations .............................................................................................................456.3 Saturation Index Calculations....................................................................................................45

7.0 CONCLUSIONS.....................................................................................................................................49

8.0 ACKNOWLEDGEMENTS .....................................................................................................................51

9.0 REFERENCES.......................................................................................................................................52

Appendixes

Appendix A Groundwater Analytical Results

Appendix B Geochemical Calculations

List of Figures

Figure 1.0-1. Locations of well R-25, selected water supply wells, test wells, and springs nearthe Rio Grande, and generalized water-level contours for the regional aquifer ...................2

Figure 2.2-1. As-built well completion diagram of R-25 ...............................................................................4Figure 5.1-1. Major ion chemistry for well R-25 (upper saturated zone, 755.0 ft), screen #1..................29Figure 5.1-2. Major ion chemistry for well R-25 (wet and dry zones, 1192.0 ft), screen #4.....................30Figure 5.1-3. Major ion chemistry for well R-25 (regional aquifer, 1303.0 ft), screen #5 .........................31Figure 5.1-4. Distribution of total phosphorus in well R-25 during characterization sampling .................32Figure 5.1-5. Distribution of tritium in well R-25 during characterization and Laboratory surveillance

sampling.................................................................................................................................34


May 2005 iv ER2004-0072

Figure 5.1-6. Stable isotope results for wells R-9, R-12, R-15, R-19, R-25, R-26,CdV-R-15-3, and CdV-R-37-2, and for other springs in the Jemez Mountains ..................35

Figure 5.1-7. Distributions of RDX during characterization and Laboratory surveillancesampling at well R-25 ............................................................................................................38

Figure 5.1-8. Distributions of TNT during characterization and Laboratory surveillancesampling at well R-25 ............................................................................................................38

Figure 5.1-9. Distributions of PCE and TCE during characterization and Laboratory surveillancesampling at well R-25 ............................................................................................................39

Figure 6.3-1. Results of saturation index calculations using MINTEQA2 for well R-25(upper saturated zone, 755.0 ft), screen #1 .........................................................................46

Figure 6.3-2. Results of saturation index calculations using MINTEQA2 for well R-25(wet and dry zones, 1192.0 ft), screen #4............................................................................47

Figure 6.3-3. Results of saturation index calculations using MINTEQA2 for well R-25(regional aquifer, 1303.0 ft), screen #5.................................................................................48

Figure 6.3-4. Results of saturation index calculations using MINTEQA2 for well R-25 (regionalaquifer, 1796.0 ft), screen #8 ................................................................................................49

List of Tables

Table 4.2-1a. Field-Measured Parameters for Groundwater Samples Collected at Well R-25,Screen #1.................................................................................................................................5

Table 4.2-1b. Field-Measured Parameters for Groundwater Samples Collected at Well R-25,Screen #2.................................................................................................................................6

Table 4.2-1c. Field-Measured Parameters for Groundwater Samples Collected at Well R-25,Screen #3.................................................................................................................................6

Table 4.2-1d. Field-Measured Parameters for Groundwater Samples Collected at Well R-25,Screen #4.................................................................................................................................6

Table 4.2-1e. Field-Measured Parameters for Groundwater Samples Collected at Well R-25,Screen #5.................................................................................................................................7

Table 4.2-1f. Field-Measured Parameters for Groundwater Samples Collected at Well R-25,Screen #6.................................................................................................................................7

Table 4.2-1g. Field-Measured Parameters for Groundwater Samples Collected at Well R-25,Screen #7.................................................................................................................................7

Table 4.2-1h. Field-Measured Parameters for Groundwater Samples Collected at Well R-25,Screen #8.................................................................................................................................8

Table 5.1-1. Hydrochemistry of Selected Analytes for Well R-25, Screen #1.........................................10Table 5.1-2. Hydrochemistry of Selected Analytes for Well R-25, Screen #2.........................................12Table 5.1-3. Hydrochemistry of Selected Analytes for Well R-25, Screen #3.........................................15Table 5.1-4. Hydrochemistry of Selected Analytes for Well R-25, Screen #4.........................................17Table 5.1-5. Hydrochemistry of Selected Analytes for Well R-25, Screen #5.........................................19Table 5.1-6. Hydrochemistry of Selected Analytes for Well R-25, Screen #6.........................................21Table 5.1-7. Hydrochemistry of Selected Analytes for Well R-25, Screen #7.........................................24Table 5.1-8. Hydrochemistry of Selected Analytes for Well R-25, Screen #8.........................................26


ER2004-0072 v May 2005

List of Acronyms and Abbreviations

mS/cm microSiemens per centimeter

2-ADNT 2-amino-4,6-dinitrotoluene4-ADNT 4-amino-2,6-dinitrotolueneTNB 1,3,5-trinitrobenzeneam amorphousamu atomic mass unitsbgs below ground surfaceC colorimetryCVAA cold vapor atomic absorptionDCG derived concentration guidelineDNX hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazineDO dissolved oxygenDOC dissolved organic carbonDOM dissolved organic matterDR dual rotationEO standard electrode potential (in volts)Eh oxidation-reduction potentialEPA (US) Environmental Protection AgencyER Environmental Restoration (Project)ESP Environmental Surveillance ProgramGCMS gas chromatography mass spectrometryGEL General Engineering LaboratoryHAL health advisory limit (EPA)HE high explosiveHMX octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocineHSA hollow-stem augerIC ion chromatographyICPMS inductively coupled argon plasma mass spectrometryICPOES inductively coupled argon plasma optical emission spectroscopyIRMS isotope ratio mass spectrometryISE ion selective electrodeJMML Jemez Mountains meteoric lineJ values estimated valuesLANL Los Alamos National LaboratoryMCL maximum contaminant levelMDA minimum detectable activityMDL method detection limitMEQ milliequivalentsMNX hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazineMOSDAX Modular Subsurface Data Acquisition SystemMWL (worldwide) meteoric water line


May 2005 vi ER2004-0072

NMWQCC New Mexico Water Quality Control CommissionNTU nephelometric turbidity unitpH negative log10 activity of the hydrogen ionPAH polycyclic aromatic hydrocarbonsPCE perchloroethylene or tetrachloroethyleneppt precipitatepsi pound force per square inchRCRA Resource Conservation and Recovery ActRDX hexahydro-1,3,5-trinitro-1,3,5-triazineRL reporting limitRRT relative retention timeSAP sodium acid pyrophosphateSI saturation indexSVOC semivolatile organic compoundTA technical areaTCE trichloroethyleneTD total depthTDS total dissolved solidsTKN total Kjeldahl nitrogenTNT 2,4,6-trinitrotolueneTNX hexahydro-1,3,5-trinitroso-1,3,5-triazineTOC total organic carbonTW test wellUDR underground drilling rigVOC volatile organic compound


ER2004-0072 vii May 2005

Metric Units to US Customary Conversions

Multiply SI (Metric) Unit by To Obtain US Customary Unit

kilometers (km) 0.622 miles (mi)kilometers (km) 3281 feet (ft)meters (m) 3.281 feet (ft)meters (m) 39.37 inches (in.)centimeters (cm) 0.03281 feet (ft)centimeters (cm) 0.394 inches (in.)millimeters (mm) 0.0394 inches (in.)micrometers or microns (�m) 0.0000394 inches (in.)square kilometers (km2) 0.3861 square miles (mi2)hectares (ha) 2.5 acressquare meters (m2) 10.764 square feet (ft2)cubic meters (m3) 35.31 cubic feet (ft3)kilograms (kg) 2.2046 pounds (lb)grams (g) 0.0353 ounces (oz)grams per cubic centimeter (g/cm3) 62.422 pounds per cubic foot (lb/ft3)milligrams per kilogram (mg/kg) 1 parts per million (ppm)micrograms per gram (�g/g) 1 parts per million (ppm)liters (L) 0.26 gallons (gal.)milligrams per liter (mg/L) 1 parts per million (ppm)degrees Celsius (°C) 9/5 + 32 degrees Fahrenheit (°F)

May 2005 viii ER2004-0072

CHARACTERIZATION WELL R-25 GEOCHEMISTRY REPORT

by

Patrick Longmire

ABSTRACT

This report provides analytical results for groundwater collected during four characterization samplingrounds conducted at characterization well R-25 from November 2000 through February 2002. Well R-25was sampled from November 14 through December 12, 2000; from May 3 through 14, 2001; from August13 through 20, 2001; and from February 4 through 12, 2002. The goal of the characterization efforts wasto assess the hydrochemistry and to determine if contaminants are present in the upper saturated zoneand regional aquifer in the vicinity of the well. A geochemical evaluation of the analytical results for thewell collected during characterization is also presented in this report.

Characterization well R-25 is located atop the mesa immediately south of Cañon de Valle, east of theinactive 260 Outfall within Technical Area 16 (TA-16), at Los Alamos National Laboratory (LANL, or theLaboratory). Well R-25 is downgradient from potential release sites at TA-16 where high explosives,barium, boron, nitrate, and other contaminants are present.

Characterization well R-25 was designed as a multicompletion well with nine pipe-based, wire-wrapped,stainless-steel screens. Screens #3 and #9 were damaged during well construction yielded limitedgroundwater chemical data.

Four rounds of groundwater characterization samples were collected from the upper saturated zone atdepths of 755.0 ft (screen #1) and 892.0 ft (screen #2); from alternating wet and dry zones at a depth of1192.0 ft (screen #4); and from the regional aquifer at depths of 1303.0 ft (screen #5), 1406.0 ft (screen#6), 1605.0 ft (screen #7), and 1796.0 ft (screen #8). Screen #3 (1063.0 ft) was sampled once during thefirst characterization sampling round. Groundwater (filtered and nonfiltered) samples were analyzed usingmethods recommended by both the US Environmental Protection Agency (EPA) and the Risk Reductionand Environmental Stewardship-Remediation Services (RRES-RS) laboratories external to LANL.

The detectable concentrations of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) and 2,4,6-trinitrotoluene(TNT) within the upper saturated zone (screens #1 through #3) ranged from 0.00086 to 0.065 mg/L andfrom 0.00036 to 0.0043 mg/L, respectively. The detectable concentrations of RDX within the alternatingwet and dry zones (screen #4) ranged from 0.0052 to 0.0094 mg/L. Concentrations of TNT were less thandetection limits (0.0001 to 0.00025 mg/L) in screen #4. The detectable concentrations of RDX and TNTwithin the regional aquifer (screens #5 through #8) ranged from 0.0033 to 0.028 mg/L and from 0.00067to 0.0022 mg/L, respectively. Degradation (reduction) products of TNT, including 2-amino-4,6-dinitrotoluene (2-ADNT) and 4-amino-2,6-dinitrotoluene (4-ADNT), were observed at well R-25, whichconfirms that active natural attenuation of TNT is occurring in the upper saturated zone, the alternatingwet and dry zones, and the regional aquifer. Degradation (reduction) products of RDX, includinghexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine (MNX), hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazine (DNX),and hexahydro-1,3,5-trinitroso-1,3,5-triazine (TNX), were observed in screen #1 at concentrations lessthan 0.0005 mg/L, suggesting that RDX is persistent at well R-25. It is hypothesized that DOC is the mostlikely electron donor aiding the reduction of RDX and TNT at well R-25.


ER2004-0072 ix May 2005

Activities of tritium at well R-25 ranged from 3.03 to 140.1 pCi/L, suggesting that a component of thegroundwater is less than 60 yr old and postdates the beginning of nuclear testing. A fraction of the tritiumdetected in groundwater at well R-25 also is derived from atmospheric deposition because upgradientsprings in the Sierra de los Valles west of well R-25 contain tritium. Americium-241; cesium-137;plutonium-238; plutonium-239, -240; and strontium-90 were not detected in the groundwater samplescollected from well R-25. Activities of uranium-234, uranium-235, and uranium-238 were detected only atconcentrations less than 2.5 pCi/L, which are generally similar to activities of isotopic uranium measuredin supply wells O-4, PM-1 through PM-5, and the Guaje Well Field. Gross alpha and gross beta activitieswere generally less than 7 pCi/L. Measurable gross gamma between 58 and 186 pCi/L was attributed toisotopes within the natural uranium-238, uranium-235, and thorium-232 decay chains.

Concentrations of natural iron within the upper saturated zone and regional aquifer exceeded both theEPA secondary standard for drinking water (0.3 mg/L) and the New Mexico Water Quality ControlCommission (NMWQCC) standard for water supply (1.0 mg/L) for one sampling round in screen #2conducted on May 4, 2001, and for another in screen #8 conducted on December 12, 2000.Concentrations of manganese in the regional aquifer exceeded both the EPA secondary standard of0.05 mg/L and the NMWQCC standard of 0.2 mg/L for domestic water supply over several samplingrounds. Concentrations of uranium and natural iron and manganese varied during characterizationsampling suggesting that dynamic oxidation and reduction conditions occur at the well. Concentrations ofdissolved nickel increased from 0.010 to 0.460 mg/L in screen #1 during characterization sampling. TheEPA and NMWQCC standards for nickel are 0.1 and 0.2 mg/L, respectively. The source of nickel could befrom reductive dissolution of ferric oxyhydroxide and/or manganese oxide because concentrations ofmanganese increased during characterization sampling in screen #1.

Groundwater within the upper saturated zone ranged from a calcium-sodium bicarbonate ioniccomposition within the Bandelier Tuff to a sodium-calcium-bicarbonate ionic composition within thePuye Formation. Groundwater within the alternating wet and dry zone (screen #4; 1192.0 ft) consisted ofa calcium-sulfate ionic composition within the Puye Formation that is influenced by residual chemicalsused during well construction. Groundwater within the regional aquifer is characterized by a calcium-sodium bicarbonate ionic composition within the Puye Formation.

Stable isotope ratios of dD and d18O suggest that the sampled groundwater at well R-25 was derived froma local meteoric source consisting of precipitation and surface water and that the source of recharge isthe same for both the upper saturated zone and regional aquifer groundwater. The most likely source ofrecharge is the Sierra de los Valles, based on similarities in dD and d18O ratios between well R-25 andseveral springs. Results of d15NAIR-NO3 analyses suggest that fractionation of nitrate plus nitrite hasoccurred (+1.8 to +7.5‰) possibly due to insitu denitrification.

Several analyte suites at well R-25 are not representative of native groundwater and a discussion on thistopic is provided in this report. Major ion chemistry (calcium, sodium, and sulfate), phosphate, and traceelements including iron, manganese, nickel, strontium, and uranium are not representative of pre-drillingconditions at well R-25 because of the presence of residual chemicals used during well construction,including sodium acid pyrophosphate. Groundwater samples collected from screens #1, #7, and #8 arethe least impacted by residual chemicals, based on observed distributions of major ions and traceelements. Distributions of RDX, however, are not affected by residual chemicals based on thecompound’s persistent behavior under oxidizing and mostly near-neutral pH conditions characteristic ofgroundwater at well R-25. Concentrations of RDX decreased during characterization sampling at wellR-25 in response to the well cleaning up and discontinuing discharge from the 260 outfall, a major source


May 2005 x ER2004-0072

of HE at TA-16. Concentrations of degradation products of RDX including MNX, DNX, and TNX aretypically less than detection at well R-25. Other HE compounds (TNT and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine [HMX]) and their degradation products also are not impacted by residual chemicals.Reduction of TNT leading to the formation of 2-ADNT and 4-ADNT may occur in the alluvial sedimentsand groundwater that contain DOC and TOC. Distributions of stable isotopes (dD and d18O) and tritiumare not impacted by the residual chemicals because they are nonreactive with groundwater, organic-pooraquifer material, and drilling fluids. Reductive dechlorination of both tetrachloroethylene(tetrachloroethene) or perchloroethylene (PCE) and trichloroethylene (trichloroethene) (TCE), which aresolvents known to be used at TA-16, appears to be unlikely in the presence of small concentrations of EZMud‚ (reducing agent). Concentrations of these two solvents generally vary over time within the uppersaturated zone. Long-term monitoring of inorganic and organic chemicals is highly recommended at wellR-25. Other wells recently drilled near R-25 can be used to provide additional monitoring andcharacterization data for the upper saturated zone where the majority of HE contamination occurs.

Geochemical calculations were performed using the computer program MINTEQA2 to evaluate solutespeciation and mineral equilibrium while assessing groundwater chemistry and refining the geochemicalconceptual model for well R-25. Geochemical calculations show that well R-25 is re-equilibrating withgroundwater entering the well screens because of the presence of residual drilling material used duringwell construction and development.

Groundwater in the upper saturated zone at well R-25 was calculated to be undersaturated with respectto BaSO4, BaCO3, silica gel, silica precipitate, CaCO3 (calcite), CaHPO4, and b-Ca3(PO4)2. Groundwaterwithin the alternating wet and dry zones was calculated to be undersaturated with respect to CaCO3,BaCO3, CaHPO4, silica gel, and silica precipitate. This groundwater showed variable saturation withrespect to b-Ca3(PO4)2 and BaSO4, based on temperature and barium, calcium, phosphate, and sulfateactivities. The regional aquifer at well R-25 was calculated to be undersaturated with respect to CaCO3,BaCO3, BaSO4, CaHPO4, silica gel, and silica precipitate. Regional aquifer groundwater showed variablesaturation with respect to b-Ca3(PO4)2, based on temperature and calcium and phosphate activities. Allgroundwater was oversaturated with respect to Ca5(PO4)3OH (hydroxylapatite) and Ca5(PO4,CO3)3F.These two phases are likely to be very stable because of their low aqueous solubilities.

ER2004-0072 1 May 2005

1.0 INTRODUCTION

This report provides analytical results for four groundwater sampling rounds conducted at characterizationwell R-25. The goals of the characterization efforts were to evaluate how representative the groundwatersamples are, to assess the hydrochemistry, and to determine if contaminants are present in the uppersaturated zone and regional aquifer in the vicinity of the well. Figure 1.0-1 shows the well’s location atopthe mesa south of Cañon de Valle in the southwestern portion of Los Alamos National Laboratory (LANLor the Laboratory). Environmental Restoration (ER) Project personnel installed well R-25 as part ofgroundwater investigations to satisfy requirements of the “Hydrogeologic Workplan” (LANL 1998, 59599)and to support the Laboratory’s “Groundwater Protection Management Program Plan” (LANL 1996,70215). Well R-25 was designed primarily to provide geochemical or water quality and hydrogeologicdata for the regional aquifer and an upper saturated zone within the Bandelier Tuff and Puye Formationdowngradient from potential release sites where high explosives (HE) are present at TA-16 (Broxton et al.2002, 72640).

Hydrogeochemical interpretations are also presented using analytical results from groundwater samplescollected at well R-25. Discussion of other hydrogeochemical data collected within the southwest portionof the Laboratory, however, is deferred until they can be evaluated in the context of sitewide informationcollected from other ER Project and “Hydrogeologic Workplan” characterization wells (R-18, R-19, R-26,CdV-16-1i, and CdV-162i), CdV-R-15-3, and CdV-R-37-2. Once all deep groundwater investigations inthe southwest portion of the Laboratory have been completed, geochemical and hydrogeologicconceptual models for several watersheds (i.e., Water Canyon, Cañon de Valle, and Pajarito Canyon)may be included in a groundwater risk analysis. These models will include an evaluation of potentialcontaminant transport pathways.

2.0 DRILLING METHODS AND WELL DESIGN

2.1 Drilling Methods

The R-25 borehole was drilled to a depth of 1942 ft using fluid-assisted air-rotary drilling methods. WellR-25 was constructed with nine screened intervals; however, two screens, #3 and #9, were damagedduring well-installation activities and their use for groundwater sampling was compromised (Broxton et al.2002, 72640). Groundwater samples were not collected from screen #9 due to damage to the screen andcasing separation at 1894.7 ft below ground surface (bgs). Screen #3 was restored to partial usefulness,and all well screen intervals were developed prior to installation of a multiport sampling system(Westbay). A more thorough discussion of the R-25 drilling history is provided elsewhere (Broxton et al.2002, 72640). Drilling operations began on July 22, 1998, and installation of the Westbay MP55 Systemwas completed on October 3, 2000 (Broxton et al. 2002, 72640).


May 2005 2 ER2004-0072

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ER2004-0072 3 May 2005

2.2 Well Design

Characterization well R-25 was designed as a multicompletion well with nine pipe-based, wire-wrapped,stainless-steel screens: (#1) from 737.6 to 758.4 ft; (#2) 882.6 to 893.4 ft; (#3) 1054.6 to 1064.6 ft;(#4) 1184.6 to 1194.6 ft; (#5) 1294.7 to 1304.7 ft; (#6) 1404.7 to 1414.7 ft; (#7) 1604.7 to 1614.7 ft;(#8) 1794.7 to 1804.7 ft; and (#9) 1871.5 to 1875.0 ft (Broxton et al. 2002, 72640). No water sampleswere collected from screen #9 during characterization sampling because of damage to the screen.Screen #3 was sampled only during the first characterization round because cement used to repair thescreen compromised the representiveness of the groundwater samples. A Westbay MP55 monitoringsystem was set in the Bandelier Tuff–Otowi Member (screen #1) and Puye Formation (screens #2, #3,#4, #5, #6, #7, #8, and #9). Figure 2.2-1 shows final construction information for well R-25. Pressuretransducers were installed in all screens to obtain data for hydraulic gradients. After well development,the Westbay MP55 System for groundwater monitoring was installed in the steel-cased well. Model 2523Modular Subsurface Data Acquisition System (MOSDAX) sampler-probe equipment was used to collectgroundwater samples from the completed well.

3.0 HYDROGEOLOGY

3.1 Hydrostratigraphy

The principal hydrogeologic units penetrated in well R-25, in descending order, consisted of soil, TshiregeMember of the Bandelier Tuff, the Cerro Toledo Interval, Otowi Member of the Bandelier Tuff, and thePuye Formation (Broxton et al. 2002, 72640). The upper saturated zone occurred in both the OtowiMember (screen #1) and the upper portion of the Puye Formation (screens #2 and #3). The saturatedthickness of this zone extended from 747 to 1132 ft (Broxton et al. 2002, 72640). Alternating wet and dryzones were encountered from 1132 to 1286 ft and screen #4 was set in this transition zone. The regionalwater table was encountered at a depth of 1286 ft, and continuous saturation was observed to the totaldepth (TD) (1942 ft) of the well. Screens #5, #6, #7, #8, and #9 were set in the regional aquifer (Broxtonet al. 2002, 72640).

Aquifer performance testing, which consists of straddle packer/injection slug tests, was not conducted onwell R-25 because the screen intervals would not accept injection water (Broxton et al. 2002, 72640).One core sample of nonwelded tuff from the Otowi Member of the Bandelier Tuff was analyzed in thelaboratory for saturated hydraulic conductivity. Analysis by the constant-head method gave a value of2.7 ¥ 10-4 cm/sec (Stone 2000, 66781).

4.0 FIELD SAMPLING AND ANALYTICAL METHODS

4.1 Field Sampling Methods

Because of the low-flow (3.8 L/hr) sampling method used at Westbay-constructed wells, R-25 was notpurged prior to groundwater sampling events. Field parameters, including pH, specific conductance,turbidity, and temperature, were recorded during each sampling event. A portable Hach instrument(titration) was used to measure field alkalinity during the second, third, and fourth sampling events.


May 2005 4 ER2004-0072

10.75-in. protective cover

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20/40 sand30/70 sand

30/70 sand20/40 sand30/70 sand


Slough

Cement pad (5 ft x 10 ft x 6 in.)

TD 1942 ft

Screen #8(1794.7 to 1804.7 ft)

Screen #7(1604.7 to 1614.7 ft)

Screen #6(1404.7 to 1414.7 ft)

Screen #5(1294.7 to 1304.7 ft)

Screen #4(1184.6 to 1194.6 ft)

Screen #2(882.6 to 893.4 ft)

Screen #1(737.6 to 758.4 ft)

30/70 sand

1307 to 1308 ft

1934 to 1942 ft

1930 to 1934 ft1889 to 1930 ft

1885 to 1889 ft

1813 to 1885 ft1805 to 1813 ft1786 to 1805 ft

1781 to 1786 ft1625 to 1781 ft1618 to 1625 ft1600 to 1618 ft

1595 to 1600 ft

1424 to 1595 ft

1415 to 1424 ft1398 to 1415 ft

1394 to 1398 ft

30/70 sand

30/70 sand

20/40 sand

30/70 sand

Grout20/40 sand30/70 sand



30/70 sand20/40 sand30/70 sand


1290 to 1307 ft

1284 to 1290 ft

1202 to 1284 ft

1191 to 1202 ft1180 to 1191 ft

1174 to 1181 ft

1135 to 1174 ft

1070 to 1135 ft

1046 to 1070 ft

1040 to 1046 ft

905 to 1040 ft

897 to 905 ft878 to 897 ft

865 to 878 ft

762 to 865 ft

732 to 762 ft

726 to 732 ft

1308 to 1394 ft

50 to 726 ft

0 to 50 ft

Cement

KEY TOMATERIALS USED

Cement

Bentonite Mix

30/70 Sand

20/40 Sand

Removed Screen

Well Screen

Slough

Packer and ReplacementScreen







Granular bentonite and20/40 sand (50/50 mix)



5.625-in.-O.D., 5.0-in.-I.D. stainless steel casing

Screen #3 (damaged)(1054.6 to 1064.6 ft)

14.5-in. borehole

to 578 ft

20-in. borehole

to 20 ft

12.75-in. borehole

to 1175 ft

Screen #9 (original)(1894.7 to 1904.7 ft)

Casing/screen separation at1894.7 ft; replacement screenfrom 1871.5 to 1875 ftInflated packer above screen #9at 1862.2 ft

Not To Scale

All depths in feet bgs

10.75-in. borehole

to 1942 ft

Note: The screen intervals list the footages of the pipe perforations, not the tops and bottoms of screen joints.


Figure 2.2-1. As-built well completion diagram of R-25 (Broxton et al. 2002, 72640).


ER2004-0072 5 May 2005

Groundwater samples collected from well R-25 were analyzed for inorganic and organic chemicals andradionuclides. Temperature, turbidity, pH, carbonate alkalinity, and specific conductance were determinedon-site from an aliquot collected during field sampling. Dissolved oxygen (DO) was measured during thefourth characterization sampling round. Both filtered and nonfiltered samples were collected for chemicaland radiochemical analyses. Only filtered samples were collected for analyses of isotopic americium,cesium, plutonium, strontium, and uranium during the sampling events. Nonfiltered samples wereanalyzed for gross alpha, gross beta, and gross gamma to provide a worst-case estimate of radioactivityin the groundwater samples. Groundwater samples were collected for analyses of HE compounds,HE-degradation products, dissolved organic carbon (DOC); total organic carbon (TOC); stable isotopes ofhydrogen, oxygen, and nitrogen; major cations and anions; metals and trace elements; organiccompounds; and radionuclides. Aliquots of the samples were filtered through a 0.45-mm Gelman filter andacidified with analytical-grade HNO3 to a pH of 2 or less for metal and radionuclide analyses. DOCsamples were filtered with a special 0.45-mm silver filter to eliminate biodegradation of organic solutes. Allgroundwater samples collected in the field were stored at 4°C until they were analyzed. The first round ofgroundwater characterization sampling took place approximately 1 month after well completion.

4.2 Field Parameters

Field-measured parameters for the groundwater samples, including pH, temperature, specificconductance, DO, and turbidity, and depths of measurement (sampling) ports are provided in Tables4.2-1a through 4.2-1h. These parameters were measured at the time of sample collection whengroundwater was in contact with the atmosphere. Temperature, specific conductance, and pH weremeasured with an Orion meter (Model 1230); turbidity was measured with a Hach meter (Model 53600-00). Both meters were calibrated daily using buffer solutions (pH 4 and 7) and known standards forturbidity. Field measurements were recorded with daily activity logs submitted to the ER Project andare included in the analytical results. Turbidity values for these samples were generally less than5 nephelometric turbidity units ([NTUs]; see Tables 4.2-1a through 4.2-1h), with one value as high as41.7 NTUs in screen #2.

Table 4.2-1a

Field-Measured Parameters for Groundwater Samples Collected at Well R-25, Screen #1

Geologic Unit Bandelier Tuff Bandelier Tuff Bandelier Tuff Bandelier Tuff

Depth (ft) 755.0 755.0 755.0 755.0

Date sampled (month/day/year) 11/14/00 05/03/01 08/13/01 02/04/02

Dissolved oxygen (mg/L) Not measured Not measured Not measured 5.4

pH (standard units) 7.65 6.98 7.39 7.53

Temperature (°C) 9.0 11.9 19.8 10.3

Specific conductance (�S/cm*) 224 233 233 228

Turbidity (NTU) 1.6 4.1 Not measured 6.18

*mS/cm = microSiemens per centimeter.


May 2005 6 ER2004-0072

Table 4.2-1b


Geologic Unit Puye Formation Puye Formation Puye Formation Puye Formation

Depth (ft) 892.0 892.0 892.0 892.0




Temperature (°C) 9.0 9.4 17.6 10.0

Specific conductance (�S/cm) 322 458 456 483

Turbidity (NTU) 41.7 13.0 18.2 33.3

Table 4.2-1c



Depth (ft) 1063.0 1063.0 1063.0 1063.0

Date sampled (month/day/year) 12/01/00 No samples No samples No samples

Dissolved oxygen (mg/L) Not measured Not measured Not measured Not measured

pH (standard units) 11.67 Not measured Not measured Not measured

Temperature (°C) 9.1 Not measured Not measured Not measured

Specific conductance (�S/cm) 534 Not measured Not measured Not measured

Turbidity (NTU) 0.8 Not measured Not measured Not measured

Table 4.2-1d



Depth (ft) 1192.0 1192.0 1192.0 1192.0




Temperature (°C) 8.8 17.3 19.7 11.2


Turbidity (NTU) 5.3 31.7 4.6 3.82


ER2004-0072 7 May 2005

Table 4.2-1e



Depth (ft) 1303.0 1303.0 1303.0 1303.0




Temperature (°C) 10.8 15.4 19.5 11.6


Turbidity (NTU) 6.2 3.2 5.8 3.4

Table 4.2-1f



Depth (ft) 1406.0 1406.0 1406.0 1406.0




Temperature (°C) 10.9 16.2 17.4 12.5


Turbidity (NTU) 1.8 0.3 2.7 0.4

Table 4.2-1g



Depth (ft) 1605.0 1605.0 1605.0 1605.0




Temperature (°C) 11.2 15.8 20.4 12.9


Turbidity (NTU) 3.5 3.4 4.7 2.5


May 2005 8 ER2004-0072

Table 4.2-1h



Depth (ft) 1796.0 1796.0 1796.0 1796.0




Temperature (°C) 10.9 18.9 23.5 13.2


Turbidity (NTU) 14.3 6.5 8.4 3.4

At well R-25, recorded measurements of water temperature made at the surface ranged from 9.0 to19.8°C within the upper saturated zone (screens #1 through #4) and from 10.8 to 23.5°C within theregional aquifer (screens #5 through #8). The lowest temperature measurements were recorded in thewinter of 2000. Variation in temperature is mostly likely influenced by ambient surface temperature, eventhough temperature measurements were recorded immediately during sample collection.

4.3 Analytical and Validation Methods

4.3.1 Analytical Methods

Groundwater samples were analyzed using techniques specified in EPA SW-846 methods, including ionchromatography (IC) for bromide, chloride, fluoride, oxalate, nitrate plus nitrite, perchlorate, phosphate,and sulfate. Inductively coupled argon plasma optical emission spectroscopy (ICPOES) was the analyticalmethod for major cations (calcium, magnesium, potassium, and sodium) and trace elements (aluminum,arsenic, barium, boron, chromium, cobalt, copper, iron, manganese, molybdenum, nickel, selenium,silicon [silica], silver, strontium, vanadium, and zinc). Total cyanide was analyzed by colorimetry (C), andmercury was analyzed by cold vapor atomic absorption (CVAA). Ammonium was analyzed by ionselective electrode (ISE). Total Kjeldahl nitrogen (TKN) was measured by distillation. Antimony, beryllium,cadmium, lead, thallium, and uranium were analyzed by inductively coupled argon plasma massspectrometry (ICPMS) during the four sampling events.

The analytical work was performed by ER Project–approved subcontractor laboratories, includingParagon Analytics, Inc. (IC, C, ISE, CVAA, ICPOES, and ICPMS methods for the first and secondsampling rounds), and General Engineering Laboratory (GEL) (IC, C, ISE, CVAA, ICPOES, and ICPMSmethods for the third and fourth sampling rounds, and perchlorate-IC). Alkalinity was determined atParagon Analytics, Inc., and GEL laboratories using standard titration techniques. Laboratory blanks wereanalyzed according to EPA and LANL procedures. The precision limits for major ions and trace elementswere generally ±10%. DOC fractionation was performed using an XAD-8 column at Huffman Laboratories.(Elution of hydrophobic and hydrophilic organic compounds is based on physical adsorption.)

Volatile organic compounds (VOCs) and semivolatile organic compounds (SVOCs), HE compounds,HE-degradation products, polychlorinated biphenyls, and pesticides were analyzed by high-pressureliquid chromatography and gas chromatography mass spectrometry (GCMS). Paragon Analytics, Inc. andGEL performed these organic analyses.


ER2004-0072 9 May 2005

Tritium activity in groundwater was determined by direct counting and electrolytic enrichment. Radiometricmethods included alpha spectrometry for americium, plutonium, and uranium isotopes; gammaspectrometry for cesium-137 and other gamma-emitting isotopes; and gas proportional counting forstrontium-90. These analyses were performed by contract laboratories, including Paragon Analytics, Inc.(radionuclides for the first and second sampling rounds); GEL (radionuclides for the third and fourthsampling rounds); and the University of Miami (low-level tritium).

Geochron Laboratories of Cambridge, Massachusetts, analyzed stable isotope ratios of oxygen (d18O)and hydrogen (dD) using isotope ratio mass spectroscopy (IRMS). Coastal Science Laboratories, Inc., ofAustin, Texas, analyzed nitrogen isotope ratios (d15NAIR-NO3 and d15NAIR-NH3) using IRMS.

4.3.2 Validation Methods

Data quality validation was performed on chemical and radiochemical analytical results for groundwatersamples collected from well R-25, in accordance with RRES-RS standard operating procedures. Thevalidation process generally revealed no deficiencies except for selected organic analyses. Groundwatersamples were analyzed within required holding times. Laboratory blanks, percent tracer recovery,laboratory duplicate samples, laboratory control samples (LCSs), internal standards, spike recovery, andanalyte concentrations relative to instrument detection and reporting (quantitation) limits were evaluatedas part of the validation procedure. Charge-balance errors for analytical results were calculated for majorand trace ions using the computer program MINTEQA2 (Allison et al. 1991, 49930). Percent chargebalance is defined as follows:

(100)[(Â milliequivalents cations – Â milliequivalents anions) divided by(Â milliequivalents cations + Â milliequivalents anions)].

Detection of a chemical in groundwater is defined as finding an analyte concentration that exceeds themethod detection limit (MDL). Detection of a radionuclide in groundwater occurs if its activity exceeds 3s(three standard deviations) above the instrument MDA. The 3s values for every radionuclide arecontained in the ER Project database and were included as part of data validation. A nondetect is definedas an analyte concentration that is recorded but is less than the MDL. The reporting limit (RL) is definedas the method quantitation limit.

5.0 GROUNDWATER ANALYTICAL RESULTS

This section presents analytical results obtained during four sampling rounds conducted at well R-25 fromNovember 14 through December 12, 2000; from May 3 through 14, 2001; from August 13 through 20,2001; and from February 4 through 12, 2001. Analyte suites included HE compounds, major ions, traceelements, trace metals, radionuclides, stable isotopes, organic compounds, and DOC.

Analytical results for well R-25 show that contaminant concentrations were below standards and healthadvisory limits, excluding 2,4,6-trinitrotoluene (TNT); hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX);dissolved and total iron; and total manganese. The EPA health advisory limits for RDX and TNT indrinking water are 0.61 and 2.2 mg/L, respectively. The EPA secondary standard for total manganese is0.05 mg/L and the NMWQCC standard for dissolved manganese for a water supply is 0.2 mg/L.Concentrations of manganese were probably derived from natural sources as a result of the reductionand dissolution of manganese minerals in the presence of residual drilling fluids. Concentrations of ironwere also above the EPA standard of 0.3 mg/L and the NMWQCC standard of 1.0 mg/L in well R-25


May 2005 10 ER2004-0072

(screen #8) during the first sampling event. Concentrations of dissolved nickel increased from 0.010 to0.460 mg/L in screen #1. The EPA and NMWQCC standards for nickel are 0.1 and 0.2 mg/L,respectively.

5.1 Major Ions, Metals, Radionuclides, Organic Compounds, and Stable Isotopes

Groundwater samples were collected from the upper saturated zone (screens #1, #2, and #3); fromalternating wet and dry zones (screen #4); and from the regional aquifer. Measurements of both field-measured (nonfiltered) and fixed-laboratory (filtered) alkalinity are provided in Tables 5.1-1 through 5.1-8.

Selected results for inorganic and organic analytes measured at well R-25 are provided in Tables 5.1-1through 5.1-8, and complete analytical results are provided in Appendix A. Groundwater sampled at wellR-25 had speciated charge-balance errors, calculated by MINTEQA2, that were generally less than±10%. The positive charge-balance errors in Tables 5.1-1 through 5.1-8 indicate excess cations fromanalytical results, a finding that is probably the result of analytical errors within acceptable instrumentprecision (less than ±10%) associated with ICPOES at Paragon Analytics, Inc., and GEL. Negativecharge-balance errors in Tables 5.1-1 through 5.1-8 indicate excess anions from analytical results, afinding that probably results from the measurement of alkalinity off-site at Paragon Analytics, Inc. andGEL. Alkalinity values in bold in Tables 5.1-1 through 5.1-8 were used for calculating charge balanceerrors.

Table 5.1-1

Hydrochemistry of Selected Analytes for Well R-25, Screen #1

Depth of Measurement Port (ft) 755.0 755.0 755.0 755.0


Sample Treatment Filtered Filtered Filtered Filtered

Date Sampled (month/day/year) 11/14/00 05/03/01 08/13/01 02/04/02

Alkalinity (CaCO3 mg/L) 73 Lab 78 Field, 87 Lab 64 Field, 87 Lab 95 Field, 75.2 Lab

Ca (mg/L) 22.0 26.0 26.0 26.1

Mg (mg/L) 5.9 5.6 6.2 6.2

Na (mg/L) 9.9 9.4 9.7 10.5

K (mg/L) 1.4 1.4 [1.5], U 1.3

Cl (mg/L) 11.0 12.0 13.0 10.5

SiO2 (mg/L) 51.4 51.4 49.2 51.6

SO4 (mg/L) 10.0 12.0 11.0 9.4

NH3 (as N) (mg/L) [0.50], Ua [0.50], U [0.100], U [0.05], U

B (mg/L) 0.200 0.270 0.250 0.236

Ba (mg/L) 0.007 0.007 0.009 0.008

ClO4 (mg/L) [0.00104], U [0.00237], U [0.004], U [0.004], U

F (mg/L) 0.12 0.22 0.13 0.16

Fe (mg/L) [0.046], U [0.047], U 0.027 0.030

Mn (mg/L) 0.007 0.043 0.086 0.112

Mo (mg/L) [0.003], U [0.004], U [0.004], U 0.001

Ni (mg/L) 0.010 0.170 0.380 0.460


ER2004-0072 11 May 2005

Table 5.1-1 (continued)





NO3 + NO2 (as N) (mg/L) 1.10 0.99 1.10 0.99

Sr (mg/L) 0.120 0.130 0.120 0.121

P (total) (mg/L) 0.25 0.13 0.08 [0.05], U

DOC (mgC/L) 1.50 Not analyzed Not analyzed 1.50

TOC (mgC/L), NFb Not analyzed Not analyzed Not analyzed 1.41

TKN (mg/L) Not analyzed Not analyzed Not analyzed 0.39

U (mg/L) 0.0013 0.00143 0.00125 0.0012

TDS (mg/L) (calculated) 186 198 204 213

MEQc cations 1.988 2.173 2.248 2.303

MEQ anions 2.049 2.202 2.419 2.469

Charge Balance (%) -1.518 -0.666 -3.675 -3.480

4-Amino-2,6-dinitrotoluene (4-ADNT) (mg/L), NF

0.0033 0.0014 0.0028 0.0017


0.008 0.001 0.0024 [0.0001], U

2,4-Dinitrotoluene (mg/L) [0.0025], U [0.0001], U 0.00056 [0.00031], U

Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX)(mg/L), NF

[0.010], U 0.0045 0.0077 0.0064

Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) (mg/L), NF

0.065 0.030 0.0586 0.0416

Hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine (MNX)(mg/L), NF

Not analyzed Not analyzed [0.0005], U 0.00027

Hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazine (DNX)(mg/L), NF


Hexahydro-1,3,5-trinitroso-1,3,5-triazine (TNX) (mg/L), NF


2,4,6-Trinitrotoluene (TNT)(mg/L), NF

0.0043 0.0011 0.0034 0.0014

Tetrachloroethylene (PCE)(mg/L), NF

0.0013 [0.005], U [0.005], U 0.0011

Trichloroethylene (TCE)(mg/L), NF

0.0018 0.0014 0.0008 0.0017

Toluene (mg/L), NF [0.005], U [0.005], U [0.005], U [0.001], U

1,3,5-Trinitrobenzene (1,3,5-TNB) (mg/L), NF

[0.0026], U 0.00013 0.00035 [0.00016], U

Chlorobenzene (mg/L), NF [0.005], U [0.005], U [0.005], U [0.001], U

Acetone (mg/L), NF [0.030], U [0.030], U [0.03], U 0.003


May 2005 12 ER2004-0072






Am-241 (pCi/L), Fd [0.027], U Not analyzed Not analyzed [1.11], U

Cs-137 (pCi/L), F [-1.1], U Not analyzed Not analyzed [0.689], U

Pu-238 (pCi/L), F [0.039], U Not analyzed Not analyzed Not analyzed

Pu-239,240 (pCi/L), F [0.01], U Not analyzed Not analyzed Not analyzed

Sr-90 (pCi/L), F [0.7], U Not analyzed Not analyzed Not analyzed

Tritium (pCi/L), NF 53.2 52.5 52.5 52.8

Gross alpha/beta (pCi/L), NF Not analyzed [1.5], U [1.6], U 1.31

Gross beta (pCi/L), NF Not analyzed [1.8], U [0.8], U 1.15

Gross gamma (pCi/L), NF Not analyzed 178 174 Not analyzed

U-234 (pCi/L), F 0.82 0.65 0.83 0.519

U-235 (pCi/L), F 0.082 [0.021], U [-0.008], U [0.005], U

U-238 (pCi/L), F 0.37 0.48 0.53 0.375

dD (‰), NF -82 -82 -80 -80

d15N (NH3) (‰), NF Insufficient sample

volumeeInsufficient samplevolume

Insufficientsample volume


d15N (NO3) (‰), NF +2.1 Insufficient sample

volume+3.1 +7.2

d18O (‰), NF -11.6 -11.8 -11.8 -11.6

a U = not detected.b NF = nonfiltered.c MEQ = milliequivalents.d F = filtered.e Nitrate (N) and ammonium (N) concentrations less than 1 mg/L require a 3.8 L sample to measure d15N.

Table 5.1-2






Alkalinity (CaCO3 mg/L) 130 Lab 130 Field, 190 Lab 135 Field, 190 Lab 210 Field, 79.1Lab

Ca (mg/L) 8.4 6.6 6.7 8.6

Mg (mg/L) 2.3 1.2 1.3 1.5

Na (mg/L) 52.0 77.0 90.0 108

K (mg/L) 2.2 3.5 4.0 3.0


ER2004-0072 13 May 2005



Geologic Unit Puye Formation Puye Formation Puye Formation Puye

Formation



Cl (mg/L) 10.0 11.0 12.0 9.9

SiO2 (mg/L) 40.7 36.4 36.4 42.2

SO4 (mg/L) 14.0 15.0 13.0 11.6

NH3 (as N) (mg/L) [0.50], Ua [0.50], U 0.10 [0.05], U

B (mg/L) 0.29 0.64 0.60 0.56

Ba (mg/L) 0.003 [0.003], U 0.003 0.002

ClO4 (mg/L) [0.00104], U [0.00185], U [0.004], U [0.004], U

F (mg/L) 0.18 0.19 0.11 0.07

Fe (mg/L) [0.099], U 0.31 0.140 0.117

Mn (mg/L) 0.016 0.009 0.010 0.019

Mo (mg/L) 0.008 0.013 0.016 0.021

Ni (mg/L) 0.002 0.005 0.004 0.008

NO3 + NO2 (as N) (mg/L) [0.10], U [0.10], U [0.050], U [0.05], U

Sr (mg/L) 0.045 0.029 0.030 0.036

P (total) (mg/L) 9.70 19.0 19.0 18.1


TOC (mgC/L), NFb Not analyzed 6.63 2.20 2.94


U (mg/L) 0.00362 0.00105 0.000594 0.00032


MEQc cations 2.826 3.721 4.460 5.201

MEQ anions 3.738 4.373 5.155 5.771

Charge Balance (%) -13.89 -8.061 -7.234 -5.197

4-Amino-2,6-dinitrotoluene (4-ADNT)(mg/L), NF

0.0013 [0.0001], U [0.0001], U [0.0001], U


0.00049 [0.0001], U [0.0001], U [0.005], U

2,4-Dinitrotoluene (mg/L) [0.00025], U [0.0001], U [0.0001], U [0.0001], U

Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) (mg/L), NF

0.0028 [0.0001], U [0.0001], U [0.0001], U


0.015 [0.0001], U [0.0001], U 0.00086

Hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine (MNX) (mg/L), NF

Not analyzed Not analyzed 0.0005, Rd [0.0005], U

Hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazine (DNX) (mg/L), NF

Not analyzed Not analyzed 0.0005, R [0.0005], U


May 2005 14 ER2004-0072



Geologic Unit Puye Formation Puye Formation Puye Formation Puye

Formation





2,4,6-Trinitrotoluene (TNT) (mg/L),NF

[0.00025], U [0.0001], U [0.0001], U [0.0001], U

Tetrachloroethylene (PCE) (mg/L),NF

0.0012 [0.005], U [0.005], U 0.00038

Trichloroethylene (TCE) (mg/L), NF [0.005], U [0.005], U [0.005], U 0.00039

Toluene (mg/L), NF [0.005], U [0.005], U [0.005], U 0.00018

1,3,5-Trinitrobenzene (1,3,5-TNB)(mg/L), NF

[0.00026], U [0.0001], U [0.0001], U [0.0001], U

Carbon disulfide (mg/L), NF [0.005], U 0.0049 0.0025 0.0015



Am-241 (pCi/L), Fe [0.008], U Not analyzed Not analyzed [-2.6], U

Cs-137 (pCi/L), F [-0.5], U Not analyzed Not analyzed [0.0899], U

Pu-238 (pCi/L), F [-0.008], U Not analyzed Not analyzed Not analyzed


Sr-90 (pCi/L), F [0], U Not analyzed Not analyzed Not analyzed

Tritium (pCi/L), NF 140.1 55.7 57.4 48.7

Gross alpha/beta (pCi/L), NF Not analyzed 6.4 3.2 6.24

Gross beta (pCi/L), NF Not analyzed 5.4 5.3 5.02

Gross gamma (pCi/L), NF Not analyzed 154 146 [54], U

U-234 (pCi/L), F 2.13 0.55 0.31 0.222

U-235 (pCi/L), F 0.162 [0.006], U [0.026], U 0.0381

U-238 (pCi/L), F 1.3 0.298 0.27 0.116

dD (‰), NF -80 -83 -85 -81


volumefInsufficientsample volume

Insufficient samplevolume

Insufficientsamplevolume

d15N (NO3) (‰), NF +1.8 Insufficient

sample volumeInsufficient samplevolume

insufficientsamplevolume

d18O (‰), NF -11.6 -11.8 -11.8 -11.9

a U = not detected.b NF = nonfiltered.c MEQ = milliequivalents.d R = rejected data due to missing laboratory control sample (LCS) and/or surrogate information and exceeding holding time.e F = filtered.f Nitrate (N) and ammonium (N) concentrations less than 1 mg/L require a 3.8 L sample to measure d15N.


ER2004-0072 15 May 2005

Table 5.1-3


Depth of Measurement Port (ft) 1063.0

Geologic Unit Puye Formation

Sample Treatment Non Filtered

Date Sampled (month/day/year) 12/01/00

Alkalinity (CaCO3 mg/L) Not measured

Ca (mg/L) 50.0

Mg (mg/L) 32.0

Na (mg/L) 18.0

K (mg/L) 8.2

Cl (mg/L) Insufficient sample volumea

SiO2 (mg/L) 68.5

SO4 (mg/L) Insufficient sample volume

NH3 (as N) (mg/L) 1.2

B (mg/L) 0.16

Ba (mg/L) 0.006

ClO4 (mg/L) Insufficient sample volume

F (mg/L) Insufficient sample volume

Fe (mg/L) [0.12], Ub

Mn (mg/L) 0.002

Mo (mg/L) [0.003], U

Ni (mg/L) 0.095

NO3 + NO2 (as N) (mg/L) [0.10], U

Sr (mg/L) 0.210

P (total) (mg/L) Insufficient sample volume

Tl (mg/L) 0.0051

DOC (mgC/L) 2.3

TOC (mgC/L), NFc Not analyzed

TKN (mg/L) Not analyzed

U (mg/L) Insufficient sample volume

TDS (mg/L) (calculated) Not applicable

MEQd cations Not applicable

MEQ anions Not applicable

Charge Balance (%) Not applicable


[0.00025], U


[0.00025], U

2,4-Dintrotoluene (mg/L) [0.00025], U

Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) (mg/L), NF

0.0049


May 2005 16 ER2004-0072


Depth of Measurement Port (ft) 1063.0

Geologic Unit Puye Formation

Sample Treatment Non Filtered

Date Sampled (month/day/year) 12/01/00

Hexahydro-1,3,5-trinitro-1,3,5-triazine(RDX) (mg/L), NF

0.0052


Insufficient sample volume



Hexahydro-1,3,5-trinitroso-1,3,5-triazine(TNX) (mg/L), NF


2,4,6-Trinitrotoluene (TNT) (mg/L), NF 0.00036

Tetrachloroethylene (PCE) (mg/L), NF [0.005], U

Trichloroethylene (TCE) (mg/L), NF [0.005], U

Toluene (mg/L), NF 0.015

1,3,5-Trinitrobenzene (1,3,5-TNB)(mg/L), NF

[0.00026], U

Carbon disulfide (mg/L), NF [0.005], U

Chlorobenzene (mg/L), NF 0.00089

Acetone (mg/L), NF [0.030], U

Am-241 (pCi/L), Fe Insufficient sample volume

Cs-137 (pCi/L), F Insufficient sample volume

Pu-238 (pCi/L), F Insufficient sample volume

Pu-239,240 (pCi/L), F Insufficient sample volume

Sr-90 (pCi/L), F Insufficient sample volume

Tritium (pCi/L), NF 68.0

Gross alpha/beta (pCi/L), NF Insufficient sample volume

Gross beta (pCi/L), NF Insufficient sample volume

Gross gamma (pCi/L), NF Insufficient sample volume

U-234 (pCi/L), F Insufficient sample volume



dD (‰), NF -81

d15N (NH3) (‰), NF Insufficient sample volume

d15N (NO3) (‰), NF Insufficient sample volume

d18O (‰), NF -11.7

a Volume of sample collected from screen #3 did not allow for complete analyses.b U = not detected.c NF = non filtered.d MEQ = milliequivalents.e F= filtered.


ER2004-0072 17 May 2005

Table 5.1-4







Ca (mg/L) 140 73.0 82.0 49.8

Mg (mg/L) 4.8 4.3 4.8 4.7

Na (mg/L) 11.0 8.3 8.9 8.8

K (mg/L) 1.2 0.8 [1.1], Ua 0.6

Cl (mg/L) 5.7 5.4 6.2 4.8

SiO2 (mg/L) 53.5 55.6 53.5 53.1

SO4 (mg/L) 280 130 150 81.5

NH3 (as N) (mg/L) [0.50], U [0.50], U 0.12 [0.05], U

B (mg/L) 0.01 0.03 [0.02], U [0.05], U

Ba (mg/L) 0.025 0.018 0.026 0.019

ClO4 (mg/L) [0.00226], U [0.0034], U [0.004], U [0.004], U

F (mg/L) [0.10], U 0.12 [0.10], U 0.08

Fe (mg/L) [0.058], U [0.034], U 0.22 0.10

Mn (mg/L) 0.130 0.025 0.140 0.031

Mo (mg/L) [0.003], U [0.004], U [0.004], U 0.0005

Ni (mg/L) 0.004 [0.0003], U 0.003 0.001

NO3 + NO2 (as N) (mg/L) 0.61 0.73 [0.05], U 0.62

Sr (mg/L) 0.44 0.32 0.35 0.22

P (total) (mg/L) 0.80 0.14 0.45 0.10


TOC (mgC/L), NFb Not analyzed 2.20 2.20 5.07


U (mg/L) 0.00069 0.00089 0.00045 0.0006


MEQc cations 7.910 4.387 4.912 3.276

MEQ anions 7.490 4.491 4.822 3.310

Charge Balance (%) +2.698 -1.166 +0.931 -0.516


0.0006 [0.0001], U [0.0001], U [0.0001], U


0.00065 [0.0001], U [0.0001], U [0.0001], U

2,4-Dintrotoluene (mg/L) [0.00025], U [0.0001], U [0.0001], U [0.0001], U


May 2005 18 ER2004-0072







[0.001], U 0.00017 [0.0001], U [0.00008], U


0.0094 0.0059 0.0052 [0.0034], U

Hexahydro-1-nitroso-3,5-dinitro-1,3,5-triazine (MNX)(mg/L), NF

Not analyzed Not analyzed 0.0005, Rd 0.00021

Hexahydro-1,3-dinitroso-5-nitro-1,3,5-triazine (DNX)(mg/L), NF


Hexahydro-1,3,5-trinitroso-1,3,5-triazine (TNX) (mg/L),NF



[0.00025], U [0.0001], U [0.0001], U [0.0001], U


[0.005], U [0.005], U [0.005], U 0.001

Trichloroethylene (TCE)(mg/L), NF

[0.005], U [0.005], U [0.005], U 0.0009

Toluene (mg/L), NF 0.00086 0.0036 0.00094 0.00024


[0.00026], U [0.0001], U [0.0001], U [0.0001], U

Carbon disulfide (mg/L), NF [0.005], U [0.005], U [0.005], U [0.005], U

Chlorobenzene (mg/L), NF 0.00073 0.0023 [0.005], U [0.001], U


Am-241 (pCi/L), Fe [0], U Not analyzed Not analyzed Not analyzed

Cs-137 (pCi/L), F [-1], U Not analyzed Not analyzed Not analyzed


Pu-239,240 (pCi/L), F [0], U Not analyzed Not analyzed Not analyzed


Tritium (pCi/L), NF 42.2 38.7 40.0 34.5

Gross alpha/beta (pCi/L), NF Not analyzed [1.18], U [1.6], U [0.575], U

Gross beta (pCi/L), NF Not analyzed [1.7], U [1.3], U [1.14], U


U-234 (pCi/L), F 0.40 0.73 [0.199], U 0.315

U-235 (pCi/L), F [0.018], U [0.033], U [0.036], U [0.013], U

U-238 (pCi/L), F 0.19 0.37 0.156 0.169

dD (‰), NF -82 -84 -79 -84


ER2004-0072 19 May 2005







volumefInsufficientsample volume




sample volume+4.7 +7.5

d18O (‰), NF -11.2 -12.0 -12.0 -11.9

a U = not detected.b NF = nonfiltered.c MEQ = milliequivalents.d R = rejected data due to missing laboratory control sample (LCS) and/or surrogate information and exceeding holding time..e F = filtered.f Nitrate (N) and ammonium (N) concentrations less than 1 mg/L require a 3.8 L sample to measure d15N.

Table 5.1-5







Ca (mg/L) 22.0 20.0 21.0 21.8

Mg (mg/L) 4.7 4.5 4.8 4.5

Na (mg/L) 14.0 16.0 16.0 23.9

K (mg/L) 1.2 1.3 1.2 1.3

Cl (mg/L) 5.6 3.2 4.0 3.0

SiO2 (mg/L) 49.2 55.6 53.5 50.9

SO4 (mg/L) 9.6 8.9 8.2 8.8

NH3 (as N) (mg/L) [0.50], Ua [0.50], U [0.10], U [0.05], U

B (mg/L) 0.13 0.11 0.14 0.10

Ba (mg/L) 0.008 0.02 0.01 0.013

ClO4 (mg/L) [0.00104], U [0.00193], U [0.004], U [0.004], U

F (mg/L) 0.11 0.13 0.14 0.12

Fe (mg/L) [0.048], U [0.047], U [0.043], U [0.05], U

Mn (mg/L) 0.210 0.270 0.260 0.396

Mo (mg/L) 0.005 0.008 [0.004], U 0.010

Ni (mg/L) 0.008 [0.0003], U 0.004 0.002

NO3 + NO2 (as N) (mg/L) [0.10], U 0.14 [0.05], U 0.18

Sr (mg/L) 0.150 0.150 0.140 0.155

P (total) (mg/L) 2.80 3.20 3.0 3.45


May 2005 20 ER2004-0072






DOC (mgC/L) 1.3 Not analyzed Not analyzed 2.0TOC (mgC/L), NFb Not analyzed 7.0 2.20 3.44

TKN (mg/L) Not analyzed Not analyzed Not analyzed 0.21U (mg/L) 0.00217 0.00124 Not reported 0.00093TDS (mg/L) (calculated) 208 204 212 210MEQc cations 2.083 2.061 2.133 2.550

MEQ anions 2.446 2.225 2.402 2.455Charge Balance (%) -8.006 -3.813 -5.923 +1.9024-Amino-2,6-dinitrotoluene (4-ADNT) (mg/L), NF

0.00094 0.00029 [0.00024], U [0.0015], U


0.00075 [0.0001], U [0.00024], U [0.0001], U

2,4-Dinitrotoluene (mg/L) [0.0005], U [0.0001], U [0.00024], U [0.0001], UOctahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) (mg/L),NF

0.0031 0.00012 0.001 [0.00055], U


0.022 0.0067 0.0054 [0.0025], U


Not analyzed Not analyzed Not analyzed [0.0005], U






[0.0005], U [0.0001], U [0.00024], U [0.0001], U


[0.005], U [0.005], U [0.005], U [0.001], U

Trichloroethylene (TCE) (mg/L),NF

[0.005], U [0.005], U [0.005], U [0.001], U

Toluene (mg/L), NF 0.0025 [0.0005], U [0.0005], U [0.00046], U1,3,5-Trinitrobenzene (1,3,5-TNB) (mg/L), NF

[0.00052], U [0.0001], U [0.00024], U [0.0001], U


Chlorobenzene (mg/L), NF [0.005], U [0.005], U [0.005], U [0.001], UAcetone (mg/L), NF [0.030], U [0.030], U [0.030], U [0.005], UAm-241 (pCi/L), Fd [0.032], U Not analyzed Not analyzed Not analyzedCs-137 (pCi/L), F [-0.7], U Not analyzed Not analyzed Not analyzed

Pu-238 (pCi/L), F [0.016], U Not analyzed Not analyzed Not analyzedPu-239,240 (pCi/L), F [0.016], U Not analyzed Not analyzed Not analyzedSr-90 (pCi/L), F [0.4], U Not analyzed Not analyzed Not analyzed


ER2004-0072 21 May 2005






Tritium (pCi/L), NF 27.1 17.4 Insufficientsample volume

17.9

Gross alpha/beta (pCi/L), NF Not analyzed [1.3], U Not analyzed [2.33], UGross beta (pCi/L), NF Not analyzed [1.2], U Not analyzed [1.36], U

Gross gamma (pCi/L), NF Not analyzed 186 Not analyzed Not analyzedU-234 (pCi/L), F 1.06 0.32 Not analyzed Not analyzedU-235 (pCi/L), F [-0.001], U [-0.004], U Not analyzed Not analyzedU-238 (pCi/L), F 0.6 0.237 Not analyzed Not analyzed

dD (‰), NF -81 -80 Insufficientsample volume

-83

d15N (NH3) (‰), NF Insufficient

sample volumeeInsufficientsample volume



d15N (NO3) (‰), NF Insufficient

sample volumeInsufficientsample volume



d18O (‰), NF -12.0 -12.0 Insufficient

sample volume-12.0

a U = not detected.b NF = non filtered.c MEQ = milliequivalents.d F= filtered.e Nitrate (N) and ammonium (N) concentrations less than 1 mg/L require a 3.8 L sample to measure d15N.

Table 5.1-6






Alkalinity (CaCO3 mg/L) 90 Lab 79 Field, 88 Lab 52 Field, 88 Lab 98.5 Field, 90 Lab

Ca (mg/L) 23.0 21.0 20.0 19.0

Mg (mg/L) 4.6 3.9 4.0 3.7

Na (mg/L) 15.0 14.0 13.0 12.6

K (mg/L) 1.5 1.3 1.0 0.95

Cl (mg/L) 4.9 2.8 2.4 4.8

SiO2 (mg/L) 55.6 55.6 55.6 55.2

SO4 (mg/L) 7.8 6.5 4.6 3.9

NH3 (as N) (mg/L) [0.50], Ua [0.50], U [0.10], U [0.05], U

B (mg/L) 0.120 0.087 0.081 0.040

Ba (mg/L) 0.008 0.014 0.016 0.019


May 2005 22 ER2004-0072






ClO4 (mg/L) [0.00104], U [0.00262], U [0.004], U [0.004], U

F (mg/L) 0.10 0.11 0.13 0.17

Fe (mg/L) [0.048], U [0.061], U [0.023], U [0.050], U

Mn (mg/L) 0.12 0.014 0.001 0.369

Mo (mg/L) 0.007 [0.004], U [0.004], U 0.002

Ni (mg/L) 0.005 [0.003], U [0.001], U [0.005], U

NO3 + NO2 (as N) (mg/L) 0.44 0.36 0.33 0.28

Sr (mg/L) 0.160 0.160 0.140 0.127

P (total) (mg/L) 8.4 6.9 6.2 4.2

DOC (mgC/L) Not analyzed Not analyzed Not analyzed 0.66

TOC (mgC/L), NFb 0.91 1.3 Not analyzed 0.72

TKN (mg/L) Not analyzed Not analyzed Not analyzed [0.10], U

U (mg/L) 0.0007 0.00077 0.00086 0.00073


MEQc cations 2.123 1.955 1.922 1.779

MEQ anions 2.550 2.118 1.833 2.248

Charge Balance (%) -9.149 -3.979 +2.370 -11.67


0.0025 0.0017 0.0013 0.00084


0.0016 0.00095 0.00068 [0.0001], U

2,4-Dinitrotoluene (mg/L) [0.00025], U 0.00011 [0.0001], U [0.0001], U

Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) (mg/L),NF

0.0028 0.0019 0.0014 [0.0009], U


0.017 0.0107 0.0078 [0.0051], U








0.00083 0.00080 0.00067 [0.00099], U


[0.005], U [0.005], U [0.005], U [0.001], U


[0.005], U [0.005], U [0.005], U [0.001], U



ER2004-0072 23 May 2005







[0.00026], U [0.0001], U [0.0001], U [0.000082], U



Acetone (mg/L), NF [0.030], U [0.030], U [0.030], U [0.005], U

Am-241 (pCi/L), Fe Not analyzed Not analyzed Not analyzed Not analyzed

Cs-137 (pCi/L), F Not analyzed Not analyzed Not analyzed Not analyzed

Pu-238 (pCi/L), F Not analyzed Not analyzed Not analyzed Not analyzed

Pu-239,240 (pCi/L), F Not analyzed Not analyzed Not analyzed Not analyzed

Sr-90 (pCi/L), F Not analyzed Not analyzed Not analyzed Not analyzed

Tritium (pCi/L), NF 26.1 14.18 9.96 7.57


Gross beta (pCi/L), NF Not analyzed [1.1], U 2.6 [0.593], U


U-234 (pCi/L), F Not analyzed 0.51 0.57 0.42

U-235 (pCi/L), F Not analyzed [0.013], U [0.049], U 0.0197

U-238 (pCi/L), F Not analyzed 0.291 0.31 0.232

dD (‰), NF -80 -83 -84 -85


sample volumefInsufficientsample volume




sample volume+6.2 Insufficient

sample volume

d18O (‰), NF -12.0 -12.0 -12.0 -11.9



May 2005 24 ER2004-0072

Table 5.1-7







Ca (mg/L) 18.0 12.0 11.0 11.2

Mg (mg/L) 4.5 2.9 2.9 2.9

Na (mg/L) 12.0 10.0 9.4 10.9

K (mg/L) 1.7 1.4 1.2 1.3

Cl (mg/L) 6.5 3.0 2.7 1.6

SiO2 (mg/L) 53.5 55.6 55.6 56.5

SO4 (mg/L) 9.4 3.7 2.8 2.2

NH3 (as N) (mg/L) [0.50], Ua [0.50], U [0.10], U [0.05], U

B (mg/L) 0.14 0.084 0.083 0.034

Ba (mg/L) 0.016 0.019 0.024 0.034

ClO4 (mg/L) [0.00104], U [0.00249], U [0.004], U [0.004], U

F (mg/L) [0.10], U 0.16 [0.10], U 0.15

Fe (mg/L) [0.059], U [0.10], U [0.034], U 0.023

Mn (mg/L) 0.033 0.004 0.001 0.002

Mo (mg/L) 0.005 0.005 [0.004], U 0.002

Ni (mg/L) [0.003], U [0.001], U [0.001], U [0.005], U

NO3 + NO2 (as N) (mg/L) 0.61 0.38 0.36 0.28

Sr (mg/L) 0.110 0.076 0.069 0.067

P (total) (mg/L) 1.0 0.82 0.74 0.49

DOC (mgC/L) Not analyzed Not analyzed Not analyzed 0.25

TOC (mgC/L), NFb 0.88 1.7 Not analyzed 0.67


U (mg/L) 0.00086 0.00049 0.00045 0.00039


MEQc cations 1.806 1.311 1.229 1.310

MEQ anions 1.934 1.236 1.191 1.439

Charge Balance (%) -3.417 +2.928 +1.581 -4.716


0.0038 0.0013 0.0013 [0.0013], U


0.0022 0.001 0.00077 [0.0001], U

2,4-Dinitrotoluene (mg/L), NF [0.0005], U 0.00016 0.00013 [0.00011], U


ER2004-0072 25 May 2005







0.0038 0.0019 0.0013 [0.00076], U


0.026 0.0099 0.0064 [0.0032], U


Not analyzed Not Analyzed [0.0005], U [0.0005], U


Not analyzed Not analyzed [0.0005], U [0.0005], U


Not analyzed Not analyzed [0.0005], U [0.0005], U


0.0022 0.0012 0.00092 [0.00066], U


[0.005], U [0.005], U [0.005], U [0.001], U


0.001 [0.005], U [0.005], U [0.001], U



[0.00052], U 0.00017 0.00013 [0.000096], U


Chlorobenzene, (mg/L) NF [0.005], U [0.005], U [0.005], U [0.001], U


Am-241 (pCi/L), Fd [0.008], U Not analyzed Not analyzed Not analyzed

Cs-137 (pCi/L), F [-1.1], U Not analyzed Not analyzed Not analyzed


Pu-239,240 (pCi/L), F [0], U Not analyzed Not analyzed Not analyzed


Tritium (pCi/L), NF 35.4 10.92 5.90 3.03


Gross beta (pCi/L), NF Not analyzed [1], U [2.1], U [1.75], U

Gross gamma (pCi/L), NF Not analyzed [54], U 154 Not analyzed

U-234 (pCi/L), F 0.7 0.39 [0.226], U 0.229

U-235 (pCi/L), F [0.005], U [0.028], U [0.066], U [0.009], U

U-238 (pCi/L), F 0.35 0.139 0.166 0.15

dD (‰), NF -80 Insufficientsample volume

-86 -82


sample volumeeInsufficientsample volume




May 2005 26 ER2004-0072







sample volume+5.3 Insufficient

sample volume

d18O (‰), NF -12 Insufficient

sample volume-12.0 -11.7

a U = not detected.b NF = nonfiltered.c MEQ = milliequivalents.d F = filtered.e Nitrate (N) and ammonium (N) concentrations less than 1 mg/L require a 3.8 L sample to measure d15N.

Table 5.1-8





Date Sampled (mo/d/yr) 12/12/00 05/14/01 08/20/01 02/12/02


Ca (mg/L) 17.0 11.0 11.0 11.0

Mg (mg/L) 4.3 2.5 2.7 2.6

Na (mg/L) 18.0 13.0 12.0 13.4

K (mg/L) 3.0 2.5 2.2 2.1

Cl (mg/L) 7.9 2.8 2.6 1.7

SiO2 (mg/L) 53.5 53.5 53.5 55.2

SO4 (mg/L) 13.0 4.2 3.1 2.4

NH3 (as N) (mg/L) [0.50], Ua [0.50], U [0.10], U [0.05], U

B (mg/L) 0.140 0.082 0.080 0.035

Ba (mg/L) 0.025 0.017 0.016 0.018

ClO4 (mg/L) [0.00104], U [0.00186], U [0.004], U [0.004], U

F (mg/L) [0.10], U 0.18 [0.10], U 0.22

Fe (mg/L) 1.90 [0.120], U [0.057], U 0.021

Mn (mg/L) 0.042 0.002 0.001 0.001

Mo (mg/L) 0.006 [0.004], U [0.0041], U 0.002

Ni (mg/L) 0.007 0.005 0.001 [0.005], U

NO3 + NO2 (as N) (mg/L) 0.28 0.43 0.37 0.39

Sr (mg/L) 0.130 0.099 0.094 0.096


ER2004-0072 27 May 2005






P (total) (mg/L) 0.95 1.10 0.88 0.53


TOC (mgC/L), NFb 0.88 1.7 15.0 0.45


U (mg/L) 0.00166 0.00064 0.00054 0.00056


MEQc cations 2.134 1.371 1.330 1.379

MEQ anions 2.261 1.415 1.493 1.455

Charge Balance (%) -2.973 -1.579 -5.783 -2.686


0.0045 0.0018 0.0015 [0.0014], U


0.003 0.0012 0.00082 [0.0001], U

2,4-Dinitrotoluene (mg/L), NF [0.0005], U 0.00017 0.00014 [0.000092], U

Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) (mg/L),NF

0.0041 0.0019 0.0014 0.00073


0.028 0.010 0.0068 0.0033








0.002 0.001 0.00072 [0.00051], U


[0.005], U [0.005], U [0.005], U [0.001], U


0.0012 [0.005], U [0.005], U [0.001], U



[0.00052], U 0.00012 [0.0001], U [0.000056], U




Am-241 (pCi/L), Fe [-0.011], U Not analyzed Not analyzed Not analyzed

Cs-137 (pCi/L), F [-0.2], U Not analyzed Not analyzed Not analyzed




May 2005 28 ER2004-0072

Table 5-1-8 (continued)





Sr-90 (pCi/L), F [-0.4], U Not analyzed Not analyzed Not analyzed

Tritium (pCi/L), NF 37.7 11.50 6.48 3.09


Gross beta (pCi/L), NF Not analyzed [1.7], U 2.5 2.01


U-234 (pCi/L), F 1.59 0.42 0.48 0.466

U-235 (pCi/L), F [0.055], U [0.021], U [0.054], U 0.0376

U-238 (pCi/L), F 1.43 0.182 0.195 0.124

dD (‰), NF -81 Insufficientsample volume

-86 -82


sample volumefInsufficientsample volume




sample volumeInsufficientsample volume

+10.5

d18O (‰), NF -11.6 Insufficient

sample volume-11.9 -11.6


Because of limited sample volumes, gross alpha/beta, gross beta, gross gamma, americium-241,plutonium-238,239,240, strontium-90, cesium-137, tritium, TOC, and DOC were not analyzed for duringsome of the sampling events. Because of the high frequency of non-detects and the fact that theseconstituents, except for tritium, had not been used or released at TA-16, radionuclides did not need to besampled for on a quarterly basis. Analysis of stable isotopes of nitrogen requires a 3.8 L sample if nitrateplus nitrite (as N) and ammonium (as N) concentrations are less than 1 mg/L; however, 1-L samples weretypically collected for this analysis because of sample volume limitations.

Figure 5.1-1 shows the distribution of major ions within the upper saturated zone in screen #1 (BandelierTuff, 755.0 ft). The groundwater within this zone probably consisted of a calcium-sodium-bicarbonateionic composition (Figure 5.1-1) prior to drilling. This is based on the consistency of its major ionchemistry (Table 5.1-1) and on data from other local wells that penetrate the upper saturated zone.Calculated total dissolved solids (TDS) ranged from 186 to 213 mg/L for groundwater samples collectedfrom screen #1 (Table 5.1-1). Within screen #1, average concentrations of detectable dissolved chloride,fluoride, nitrate plus nitrite (as N), and sulfate were 11.6, 0.16, 1.04, and 10.60 mg/L, respectively (Table5.1-1). Concentrations of alkalinity, which are shown in bold in Tables 5.1-1 through 5.1-8 above, wereused for discussion in this report. Alkalinity was measured in the field and/or in an analytical laboratory


ER2004-0072 29 May 2005

and, generally, the field-measured alkalinity is more representative of groundwater conditions because ofsample degassing prior to titration. Degassing of carbon dioxide results in both decreasing alkalinity andhigher pH values which cause a change in concentrations of bicarbonate and carbonate. The mostconsistent alkalinity concentrations (values in bold in Tables 5.1-1 through 5.1-8) provided the lowestcharge-balance errors.

0

100

200

300

400

500

600

November 14, 2000 May 3, 2001 August 13, 2001 February 4, 2002

DATE

PO4

Alkalinity(CaCO3)

SO4

Cl

SiO2

K

Na

Mg

Ca

Figure 5.1-1. Major ion chemistry for well R-25 (upper saturated zone, 755.0 ft), screen #1.

Groundwater samples collected from screen #2 (892.0 ft) within the upper saturated zone showincreasing concentrations of sodium, alkalinity, phosphorus (total), and TDS during characterizationsampling (Table 5.1-2). Calculated TDS ranged from 270 to 414 mg/L for groundwater samples collectedfrom screen #2 (Table 5.1-2). The chemical composition of groundwater samples collected from screen#2 was influenced by chemicals used during well completion at R-25 (Broxton et al., 2002, 72640).

Groundwater samples collected from screen #3 (1063.0 ft) within the upper saturated zone show higherconcentrations of calcium, magnesium, sodium, and potassium compared to screen #1 during the firstcharacterization sampling round (Table 5.1-3). The highly alkaline pH of 11.67 and chemical compositionof groundwater samples collected from screen #3 were influenced by chemicals (calcium hydroxide andcalcium oxide) used to repair the screen during well completion at R-25 (Broxton et al., 2002, 72640).Groundwater samples were collected during only the first round because screen #3 did not produce waterduring the remaining characterization sampling periods.

Groundwater within the alternating wet and dry zone (screen #4) (1192.0 ft) consisted of a calcium-sulfateionic composition within the Puye Formation (Figure 5.1-2) that was strongly influenced by the presenceof chemicals used during well completion (Broxton et al., 2002, 72640). Elevated concentrations of sulfate


May 2005 32 ER2004-0072

0.01

0.1

1

10

100

700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900

DEPTH (FEET)

Regional water table

Sampling round 4(February 2002)

Sampling round 3(August 2001)

Sampling round 2 (May 2001)

Sampling round 1(November-December 2000)

Figure 5.1-4. Distribution of total phosphorus in well R-25 during characterization sampling.

Detectable TOC concentrations ranged from 1.41 to 6.63 mg carbon(C)/L (Tables 5.1-1 and 5.1-2) withinthe upper saturated zone and from 2.20 to 5.07 mgC/L (Table 5.1-4) in the alternating wet and dry zones.TOC concentrations ranged from 0.21 to 15.0 mgC/L (Tables 5.1-5 through 5.1-8) within the regionalaquifer. TOC concentrations generally decreased during characterization sampling of the upper saturatedzone (screen #2) and of the regional aquifer at well R-25, indicating that organic carbon derived fromresidual drilling fluid is oxidizing to inorganic carbon (carbonate alkalinity). Well R-25 is in the process ofre-equilibrating with groundwater as residual drilling fluid is consumed by in-situ microorganisms.

Dissolved silica in the form of Si(OH)40 was the third-most abundant solute, following carbonate alkalinity

and sodium, in both the upper saturated zone and the regional aquifer at well R-25. Concentrations ofdissolved silica ranged from 36.4 to 51.6 mg/L and from 49.2 to 56.5 mg/L within the upper saturatedzone (Tables 5.1-1 and 5.1-2) and the regional aquifer (Tables 5.1-5 through 5.1-8), respectively.Concentrations of dissolved silica ranged from 53.1 to 55.6 mg/L within the alternating wet and dry zones(Table 5.1-4).

Using the IC method, concentrations of perchlorate at well R-25 were less than the MDL (Tables 5.1-1through 5.1-8). The MDL for the IC analysis of perchlorate was reported to be 0.001 mg/L by thesubcontractor laboratory. This MDL was determined by using standard solutions prepared in an ultrapurewater matrix, and GEL set an RL of 0.004 mg/L. For the method to reflect the effect of real groundwatermatrices, which often contain interfering anions, the subcontractor laboratory provided revised RL andMDL values for perchlorate, as determined by the IC method: they are 0.004 and 0.012 mg/L,respectively.


ER2004-0072 33 May 2005

Concentrations of detectable dissolved iron were generally less than 0.2 mg/L in the upper saturatedzone (Tables 5.1-1 and 5.1-2), suggesting that this groundwater generally is oxidizing with respect to iron.Concentrations of detectable dissolved iron in the regional aquifer typically ranged from 0.021 to 0.22mg/L. The highest concentration of dissolved iron measured was 1.90 mg/L, in a groundwater samplecollected from screen #8 during the first sampling round. The reductive dissolution of ferric (oxy)hydroxidegenerally is not evident, excluding screen #2, based on low concentrations of dissolved iron (typically<0.2 mg/L) (Tables 5.1-2 through Tables 5.1-8) in groundwater samples collected from seven screens atwell R-25.

Concentrations of natural iron within the upper saturated zone and the regional aquifer exceeded boththe EPA secondary standard for drinking water (0.3 mg/L) and the NMWQCC standard for a water supply(1.0 mg/L) twice. The first was from a sampling round in screen #2 conducted on May 4, 2001 (Table 5.1-3), and the second was in screen #8 conducted on December 12, 2000 (Table 5.1-8). Concentrations ofmanganese in the regional aquifer exceeded both the EPA secondary standard of 0.05 mg/L and theNMWQCC standard of 0.2 mg/L for domestic water supply over several sampling rounds.

In groundwater samples collected from the upper saturated zone, concentrations of detectable dissolvedbarium (Ba) and boron (B) ranged from 0.002 to 0.009 mg/L and from 0.20 to 0.64 mg/L, respectively(Tables 5.1-1 and 5.1-2). In groundwater samples collected from the alternating wet and dry zones,concentrations of dissolved barium and boron ranged from 0.019 to 0.030 mg/L and from 0.01 to0.03 mg/L, respectively (Table 5.1-4). In groundwater samples collected from the regional aquifer,concentrations of detectable dissolved Ba and B ranged from 0.008 to 0.034 mg/L and from 0.035 to0.14 mg/L, respectively (Tables 5.1-5 through 5.1-8). Boron is a mobile species, stable as B(OH)3

0 belowpH 9.0 at 25�C, and was a constituent of surfactants (detergents) used at TA-16 (LANL 2003, 77965).Barium nitrate is used in the preparation of HE compounds at TA-16 and, based on observed dissolvedbarium and nitrate concentrations, the impacts on groundwater at well R-25 from dissociation of thiscompound are negligible.

Concentrations of trace elements, including antimony (Sb), arsenic (As), Ba, beryllium (Be), cadmium(Cd), chromium (Cr), cobalt (Co), copper (Cu), lead (Pb), mercury (Hg), molybdenum (Mo), selenium (Se),silver (Ag), strontium (Sr), thallium (Tl), uranium (U), vanadium (V), and zinc (Zn) were less than theirrespective EPA and NMWQCC standards. Concentrations of dissolved nickel increased from 0.010 to0.460 mg/L in screen #1 during characterization sampling (Table 5.1-1). The EPA and NMWQCCstandards for nickel are 0.1 and 0.2 mg/L, respectively. The source of nickel could result from reductivedissolution of ferric oxyhydroxide and/or manganese oxide because concentrations of both iron andmanganese increased during characterization sampling in screen #1 (Table 5.1-1). Concentrations ofdetectable dissolved uranium varied during characterization sampling from 0.00032 to 0.00362 mg/Lwithin the upper saturated zone/alternating wet and dry zones and from 0.00039 to 0.00217 mg/L withinthe regional aquifer. These variations in uranium concentrations suggest that there are dynamicoxidation-reduction (redox) conditions occurring at the well and that the well has not stabilized.Concentrations of detectable dissolved strontium (natural) varied during characterization sampling from0.029 to 0.44 mg/L within the upper saturated zone/alternating wet and dry zones and from 0.067 to0.160 mg/L within the regional aquifer. The observed concentrations of strontium correlate with calcium,partially in form of portlandite [Ca(OH2], because of similar chemical properties of these two alkaline earthmetals.


May 2005 34 ER2004-0072

A nonfiltered water sample collected from screen #3 had a Tl concentration of 0.0051 mg/L (Appendix A),and this value exceeds the EPA standard of 0.002 mg/L. Thallium (Tl+) has an ionic radius of 1.47angstroms (Å) and substitutes for potassium in six-fold coordination, having an ion radius of 1.33 Å, withinfeldspar minerals (Bloss 1971, 86538). Concentration of total potassium in screen #3 was 8 mg/L.Thallium(III) has an ionic radius of 0.95 Å and substitutes for calcium in six-fold coordination, having anion radius of 0.99 Å. The most likely source of thallium is Portlandite cement, a constituent present inscreen #3. Concentration of total calcium in screen #3 was 50.0 mg/L during the first sampling round.Monitoring of thallium will continue at well R-25, including screen #3 when sampling is feasible.

Activities of tritium ranged from 53.2 to 140.1 pCi/L in the upper saturated zone (Tables 5.1-1, 5.1-2, and5.1-3) and from 3.03 to 37.7 pCi/L in the regional aquifer (Tables 5.1-5 through 5.1-8), which suggeststhat a component of groundwater postdates the beginning of nuclear testing. A fraction of tritium,however, is derived from local precipitation because springs discharging in the Sierra de los Valles to thewest of well R-25 contain tritium (Blake et al. 1995, 49931). These springs discharge upgradient from wellR-25. Figure 5.1-5 shows the distributions of tritium in well R-25 during characterization sampling.Decreasing activities of tritium in the regional aquifer, as shown in Figure 5.1-5, suggest that the well isre-equilibrating with regional groundwater.

Figure 5.1-5. Distribution of tritium in well R-25 during characterization and Laboratory

surveillance sampling.

0

10

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70

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90

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130

140

150

600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800

DEPTH (FEET)

BANDELIER TUFF/PUYE FORMATION

REGIONAL WATER TABLE

Sampling round 6 (12/04-11/03)





Sampling round 1 (11/14/00-12/12/00)


ER2004-0072 35 May 2005

Activities of selected radionuclides are provided in Tables 5.1-1, 5.1-2, 5.1-4, 5.1-5, 5.1-6, 5.1-7, and5.1-8. Americium-241, cesium-137, plutonium-238, plutonium-239,240, and strontium-90 were notdetected in the groundwater samples collected from well R-25. Gross alpha/beta and gross beta activitieswere less than 7 pCi/L in nonfiltered samples (Tables 5.1-1 through 5.1-8). Measurable gross gamma(58 to 186 pCi/L) was attributed to isotopes within the natural uranium-238, uranium-235, and thorium-232 decay chains (Langmuir 1997, 56037) (Tables 5.1-1 through 5.1-8). Activities of uranium-238,uranium-235, and uranium-234 were less than 2.5 pCi/L in groundwater samples collected from well R-25(Tables 5.1-1 through 5.1-8). During 2001, similar activities of uranium were generally measured in supplywells (ESP 2002, 71301).

Analyses of d18O and dD were performed on groundwater samples collected from well R-25 (Tables 5.1-1through 5.1-8), and the average results are shown in Figure 5.1-6. In this figure, the Jemez Mountainsmeteoric line (upper) and the worldwide meteoric water line (lower) are denoted by JMML and MWL,respectively. Analytical uncertainties of d18O and dD are ± 0.1 and ± 1‰, respectively. Results of stableisotope analyses for well R-25 indicate a meteoric source in which the groundwater samples plot close toboth the JMML and MWL (Figure 5.1-6). The distribution of isotopic ratios suggests that evaporation ofwell R-25 groundwater has not taken place to a significant extent.

-100

-90

-80

-70

-60

-14 -13 -12 -11 -10 -9 -8 -7

DELTA 18O (PERMIL)

R-12

R-15

R-9

CDV-R-15-3

CDV-R-37-2

R-26

Sierra de los Valles springs

Valles ring fracture zone

R-19

R-25-regional aquifer (ave)

R-25-upper saturated zone (ave)

MWL

JMML

Figure 5.1-6. Stable isotope results for wells R-9, R-12, R-15, R-19, R-25, R-26, CdV-R-15-3, and

CdV-R-37-2, and for other springs in the Jemez Mountains (the upper line is the

JMML and the lower is the MWL).


May 2005 36 ER2004-0072

The upper saturated zone at well R-25 was slightly heavier in d18O and dD (enrichment of oxygen-18 anddeuterium) compared to the regional aquifer (Figure 5.1-6). The d18O and dD ratios for groundwatersamples collected from the upper saturated zone and the regional aquifer partly overlap each other,which suggests that both saturated zones at well R-25 are well mixed with depth (Tables 5.1-1 through5.1-8). This is consistent with R-25’s location within a recharge zone on the east flank of the Sierra de losValles and with dominantly downward pressure gradients (Broxton et al. 2002, 72640).

Stable isotope ratios (d18O and dD) for the regional aquifer at wells R-9, R-12, R-15, and R-19 wereshifted to less negative values relative to well R-25. This suggests that recharge occurs at lowerelevations for these wells than the recharge source(s) for well R-25 (Figure 5.1-6). Wells R-25, R-26,CdV-R-15-3, CdV-R-37-2, and springs discharging into the Sierra de los Valles have similar d18O and dDratios (Blake et al. 1995, 49931), suggesting that they are also recharged from the Sierra de los Valles(Figure 5.1-6). Springs discharging within the Valles caldera (ring fracture zone) within the JemezMountains have the lightest d18O and dD ratios for waters plotted on Figure 5.1-6. This suggests that theyare not hydraulically connected or related to springs discharging into the Sierra de los Valles andgroundwater beneath the Pajarito Plateau. Precipitation at higher elevations, for example near the Sierrade los Valles and Valles caldera, is characterized by cooler temperatures relative to other waters found atlower elevations on the Pajarito Plateau. Long-term temperatures (paleotemperatures) and seasonalvariations in temperature also influence d18O and dD values because of enrichment or depletion ofoxygen-18 and deuterium.

Nitrogen isotopes (nitrogen-15 and nitrogen-14, d15NAIR of NO3 and d15NAIR-NH3) provide a useful tool forevaluating different sources of nitrogen (nitrate plus nitrite and ammonium) found in the environment. Theisotopic standard for d15N is nitrogen in air, which has a value of 0‰ (Clark and Fritz 1997, 59168). Nitratederived from treated septic effluent is enriched in nitrogen-15 or depleted in nitrogen-14 and ischaracterized by positive d15N ratios of +7 to > +30‰ (Clark and Fritz 1997, 59168; Longmire 2002,72800). During denitrification, which is the reduction of nitrate to nitrogen gas in the presence of organiccarbon, residual nitrate becomes enriched in nitrogen-15. Subsequently, d15N ratios for nitrate becomemore positive with increasing denitrification.

Groundwater samples collected from the upper saturated zone (screens #1 and #2) were analyzed ford

15NAIR-NO3, with results ranging from +1.8 to +7.2‰ (Tables 5.1-1 and 5.1-2). These ratios fell within therange of volcanic deposits reported by Clark and Fritz (1997, 59168). The positive isotopic valuesmeasured in groundwater samples collected from 755.0 and 892.0 ft suggest enrichment of nitrogen-15.The range of d15NAIR-NO3 ratios showed fractionation of nitrogen (increasing positive isotopic ratios)observed during several sampling events, possibly resulting from denitrification. Concentrations ofmeasurable nitrate plus nitrite (as N) in the upper saturated zone ranged from 0.99 to 1.10 mg/L, which isslightly higher than natural nitrate (as N) measured in supply wells on the Pajarito Plateau (ESP 200068661; ESP 2002, 71301). Concentrations of ammonium (as N) were generally less than the MDL in theupper saturated zone, and it was not possible to measure d15NAIR-NH3 in the groundwater samples.

Groundwater samples collected from the alternating wet and dry zones (screen #4) were analyzed ford

15NAIR-NO3, with results ranging from +4.7 to +7.5‰ (Table 5.1-4). The range of d15NAIR-NO3 ratiosshowed fractionation of nitrogen (increasing positive isotopic ratios) observed during the several samplingevents. Concentrations of measurable nitrate plus nitrite (as N) in the alternating wet and dry zonesranged from 0.61 to 0.73 mg/L, which is also slightly higher than natural nitrate (as N) measured in supplywells on the Pajarito Plateau (ESP 2000, 68661; ESP 2002, 71301). Concentrations of ammonium (as N)


ER2004-0072 37 May 2005

were generally less than the MDL in the alternating wet and dry zones, and it was not possible tomeasure d15NAIR-NH3 in the groundwater samples.

Groundwater samples collected from the regional aquifer in the Puye Formation (screens #5, #6, #7, and#8) at well R-25 were analyzed for d15NAIR-NO3, with results ranging from +5.3 to +10.5‰ (Tables 5.1-5through 5.1-8). Concentrations of measurable nitrate plus nitrite (as N) in the Puye Formation rangedfrom 0.14 to 0.61 mg/L. Concentrations of ammonium (as N) were less than the MDL in the regionalaquifer and, consequently, it was not possible to measure d15NAIR-NH3 in the groundwater samplescollected from the Puye Formation (regional aquifer).

HE compounds, including RDX, HMX, and TNT were detected in groundwater during the drilling of R-25(Broxton et al. 2002, 72640). Organic compounds produced from the biodegradation (reduction) of TNT,including 2-amino-4,6-dinitrotoluene (2-ADNT) and 4-amino-2,6-dinitrotoluene (4-ADNT), were alsodetected during drilling of this well (Broxton et al. 2002, 72640). Other contaminants of concern at wellR-25 included VOCs used during cleaning operations at TA-16 (LANL 2000, ER199900135). Examples ofthese are perchloroethylene (PCE) or tetrachloroethylene (tetrachloroethene) and trichloroethylene (TCE)or trichloroethene. The EPA health advisory limits (HALs) for TNT and RDX are 2.2 and 0.61 mg/L,respectively, and the maximum contaminant limit (MCL) for both PCE and TCE is 5 mg/L. The EPA hasestablished a HAL for HMX at 1800 mg/L (EPA 2000, 70122).

The distributions of RDX in groundwater at well R-25 are shown in Figure 5.1-7. Concentrations of RDXhave decreased in the regional aquifer during characterization sampling, suggesting that the HEcompounds were dominantly introduced to the regional aquifer during drilling and well construction atR-25. Figure 5.1-8 shows distributions of TNT at well R-25 during the four characterization samplingrounds. Concentrations of TNT have decreased in both the upper saturated zone and the regional aquiferduring characterization sampling conducted at well R-25. Concentrations of PCE and TCE (Figure 5.1-9)have decreased in the upper saturated zone during the four sampling events conducted at well R-25.


May 2005 38 ER2004-0072

0

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DEPTH (FEET)


Bandelier Tuff/Puye Formation

RDX (sampling round 5)(surveillance sampling)

RDX (sampling round 4) (February 2002)

RDX (sampling round 3) (August 2001)

RDX (sampling round 2) (May 2001)

RDX (sampling round 1) (November-December 2000)

Figure 5.1-7. Distributions of RDX during characterization and Laboratory surveillance

sampling at well R-25.

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TNT (sampling round 5)(surveillance sampling)

TNT (sampling round 4)(February 2002)

TNT (sampling round 3)(August 2001)

TNT (sampling round 2)(May 2001)

TNT (sampling round 1)(November-December 2000)

Figure 5.1-8. Distributions of TNT during characterization and Laboratory surveillance

sampling at well R-25.


ER2004-0072 39 May 2005

0

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TCE (sampling round 5)

PCE (sampling round 5)







Figure 5.1-9. Distributions of PCE and TCE during characterization and Laboratory

surveillance sampling at well R-25 (note characterization sampling rounds

November–December 2000, May 2001, August 2001, and February 2002).

Concentrations of HE compounds within the upper saturated zone at well R-25 remained elevated, whichis consistent with the past long-term discharge of these contaminants from the 260 outfall and otherpotential sources at TA-16. The compound RDX is highly mobile in groundwater at well R-25 becauseadsorption of this solute onto the Bandelier Tuff and Puye Formation is minimal (Broxton et al., 2002,72640). These hydrogeologic units contain very low amounts of solid organic matter, the dominantadsorbent for RDX, TNT, HMX, and other organic compounds. Degradation or reduction of RDX to MNX,DNX, and TNX was observed during the fourth sampling round for screens #1 and #4. Concentrations ofMNX, DNX, and TNX, however, were less than 0.001 mg/L (1 mg/L) during several sampling rounds.Reduction of the nitro functional group (R-NO2) to the nitroso functional group (R-NO) occurs duringdegradation of RDX to MNX, MNX to DNX, and DNX to TNX. This reduction requires the presence of anelectron donor such as DOC, represented by carbohydrate (CH2Oo), which becomes oxidized to inorganiccarbon (bicarbonate). Reduction of RDX to MNX in the presence of CH2Oo is given by the followingreaction:

RDX(C3H6N6O6) + 0.5CH2Oo Æ MNX(C3H6N6O5) + 0.5HCO3- + 0.5H+.

DOC is the most likely reductant having a concentration greater than 1 mgC/L (Appendix A) that iscapable of reducing RDX to MNX, DNX, and TNX at well R-25. The acid and neutral functional groups ofDOC were measured in screen #1 at concentrations ranging from 0.20 to 0.6 mg/L during the fourthsampling round. Concentrations of RDX and MNX were 0.0416 and 0.00027 mg/L, respectively, duringthis sampling event. Very little degradation of RDX to MNX, DNX, and TNX, however, has taken placeat well R-25, based on the analytical results. This implies that the kinetics of this initial reaction forthe reduction of RDX are sluggish and are driven by specific bacteria not active at well R-25.


May 2005 40 ER2004-0072

Other degradation products ultimately associated with RDX reduction include ammonia, nitrous oxide,nitrogen dioxide, carboxylic acids, and carbon dioxide (Spain et al. 2000, 71317).

Generally, RDX is stable and non adsorptive; however, TNT does biodegrade under anaerobic conditionsin the presence of DOC and hydrogen sulfide. Degradation of TNT to 2-ADNT and 4-ADNT was observedduring both drilling (Broxton et al. 2002, 72640) and characterization sampling. Reduction of TNT to2-ADNT and 4-ADNT is shown by the following reaction:

TNT(C7H5N3O6) + 1.5CH2Oo + H2O Æ2-ADNT(C7H7N3O4) or 4-ADNT (C7H7N3O4) + 1.5HCO3

- + 1.5H+.

Nitrogen(IV) within the nitro functional group initially reduces to N(-II) within 2-ADNT and 4-ADNTconsisting of the amino functional group (NH2-R). The degradation products 2-ADNT and 4-ADNTultimately degrade to carbon dioxide gas, ammonium, and water. Measurable concentrations of 2-ADNTand 4-ADNT generally decreased during the characterization sampling at well R-25 (Tables 5.1-1 through5.1-8), suggesting that reduction of these two compounds was taking place. The oxidation-reductionpotential (Eh) for the TNT/4-ADNT half-cell reaction is equal to -430 millivolts (mV) at a pH of 7 (Hofstetteret al. 1999, 71307). The Eh for the TNT/2-ADNT half-cell reaction is equal to -390 mV at a pH of 7(Hofstetter et al. 1999, 71307). Reducing conditions may occur within wetlands in Cañon de Vallecontaining solid and dissolved organic carbon. Reduction of TNT to 2-ADNT and 4-ADNT is possiblewithin the wetlands.

Concentrations of 4-ADNT exceed those of 2-ADNT within the regional aquifer (screens #5, #6, #7, and#8), suggesting that 2-ADNT degrades faster than 4-ADNT under the environmental conditions prevailingat well R-25. This observation implies that the strongly reducing conditions required for transformation ofTNT to 4-ADNT are not present at well R-25; however, the reduction of TNT to 2-ADNT is occurring underless reducing conditions. This is consistent with laboratory-measured Eh values for the TNT/2-ADNT andTNT/4-ADNT half-cell reactions provided by Hofstetter et al. (1999, 71307). Similar to the reduction ofRDX, dissolved CH2O is considered to be the dominant electron donor at well R-25, based onconcentrations of neutral functional groups present in both the hydrophobic and hydrophilic fractions ofDOC. Despite the partial degradation of TNT and RDX observed at well R-25, overall the groundwater atR-25 is oxidizing (dissolved oxygen is present above 1 mg/L), which is consistent with the presence andhigh mobility of RDX, TNT, and other HE compounds observed in the upper saturated zone.

The HE compound TNT initially reduces to 4-ADNT or 2-ADNT, followed by the formation of di-amino-nitrotoluene compounds, including 2,4-DA-6-NT or 2,6-DA-4-NT under more reducing conditions. The4-ADNT/2,4-DA-6-NT half-cell reaction is equal to -515 mV at a pH of 7, and the 2-ADNT/2,6-DA-4-NThalf-cell reaction is equal to -495 mV at a pH of 7 (Hofstetter et al. 1999, 71307). The mono-amino-toluene compounds (2-ADNT and 4-ADNT) are present at R-25 (Tables 5.1-1, 5.1-2, 5.1-4 through 5-1-8)and di-amino compounds have not been identified at well R-25 using the EPA 8330 method. This impliesthat strongly reducing conditions (-495 mV) which are capable of reducing 2-ADNT and 4-ADNT do notoccur at well R-25.

Reduction of both TNT and RDX requires a source of electrons, which may be provided by the oxidationof DOC to bicarbonate. The oxidation half reaction for DOC, represented by dissolved CH2O, is given by:

CH2O0 + 2H2O = HCO3- + 5H+ + 4e-.


ER2004-0072 41 May 2005

The Eh of this reaction, at a pH of 7, is equal to -482 mV (Langmuir 1997, 56037). Oxidation of CH2O tobicarbonate is capable of reducing Mn(IV) to Mn(II), N(V) to N(-III), Fe(III) to Fe(II), S(VI) to S(-II)(Langmuir 1997, 56037), TNT to 2-ADNT, and TNT to 4-ADNT species. Application of manganese andiron redox reactions to well R-25 is discussed below.

Manganese(IV) solids become reduced to form aqueous Mn(II) species, which results in variableconcentrations of dissolved manganese (Tables 5.1-1, 5.1-2, 5.1-4 through 5.1-8). This process isrepresented by the following reaction:

MnO2 + 4H+ + 2e- = Mn2+ + 2H2O.

The Eh for Mn(IV)/Mn(II) half-cell reaction is equal to +544 mV at pH 7 and 1 ppm dissolved manganese(Langmuir 1997, 56037). Dissolved Mn(II) species dominate at Eh values of +544 mV or less at a pH of 7.Groundwater samples collected from screen #5 show dissolved manganese concentrations ranging from0.21 to 0.396 mg/L (Table 5.1-5), which are consistently higher then those measured from the otherscreens. It is likely that Mn(IV) reduction has taken place in screen #5.

Reduction of ferric (oxy)hydroxide, represented by Fe(OH)3, to dissolved ferrous iron is provided by thefollowing reaction.

Fe(OH)3 + 3H+ + e- = Fe2+ + 3H2O.

The Eh for this half-cell reaction is equal to +14 mV at a pH of 7 and 1 ppm dissolved iron (Langmuir1997, 56037). Ferrous iron is stable below an Eh value of +14 mV at pH 7 and 1 ppm Fe2+. Dissolved ironconcentrations increase with depth at R-25 in the upper saturated zone (Tables 5.1-1 and 5.1-2),suggesting that iron solids have increasing solubility with depth. It is possible that the solubility of Fe(OH)3

is controlled by the above redox couple.

Based on free energies yields associated with metal and HE reduction by DOC, the following sequencerepresents the order of reduction (most oxidizing to most reducing) at a pH of 7: Mn(IV) � Mn(II)(+544mV); Fe(III) � Fe(II)(+14 mV); TNT � 2-ADNT (-390 mV); and TNT � 4-ADNT (-430 mV). Reduction of2-ADNT and 4-ADNT to 2,4-DA-6-NT and 2,6-DA-4-NT require even more reducing conditions, such asthose produced by hydrogen gas. These conditions do not occur at well R-25.

Several VOCs and SVOCs (hydrocarbons) were detected at well R-25, including PCE (0.00038 to0.0013 mg/L), TCE (0.0008 to 0.0018 mg/L), and toluene (0.00018 to 0.015 mg/L). These compoundswere consistently detected within the upper saturated zone (Tables 5.1-1 through 5.1-3) and thealternating wet and dry zones (Table 5.1-4). During the first and second sampling events, chlorobenzenewas detected at concentrations ranging from 0.00073 to 0.0023 mg/L in the two zones (1063.0 and1192.0 ft). This compound is associated with cleaning solutions for restrooms. During three samplingrounds, acetone was detected at concentrations ranging from 0.003 to 0.0118 mg/L within the uppersaturated zone at depths of 755.0, 892.0, and 1192.0 ft (Tables 5.1-1, 5.1-2, and 5.1-4). Acetone wasused at TA-16 during cleaning operations (LANL 2000, ER199900135).

Analysis of the DOC fractionation (also termed “humic substances”), including both hydrophobic andhydrophilic fractions, was performed on nine groundwater samples collected during the first and fourthevents (Appendix A). The origin of DOC in groundwater at well R-25 includes natural sources and/orresidual fluids from drilling and/or well completion. The neutral and base fractions may consist of residualEZ-MUD copolymer and aliphatic compounds.


May 2005 42 ER2004-0072

Both fractions contained acid-, neutral-, and base-organic substances. Hydrophobic acids include humicand fulvic acids (carboxylic acids and phenols), whereas the hydrophobic neutral fraction includesaliphatic organic compounds (Vilks and Bachinski 1996, 71515). Hydrophobic bases include aromaticamines and other nitrogen-containing compounds. The hydrophilic fraction contains low-molecular weight(£5 carbon atoms) polyelectrolytic and aliphatic acids (acid fraction); aliphatic amines and amino acids(base fraction); and alcohols, esters, aliphatic amides, and carbohydrates (neutral fraction) (Vilks andBachinski 1996, 71515). These two DOC fractions occur naturally in groundwater (Vilks and Bachinski1996, 71515), with a median concentration of 0.7 mgC/L (Thurman 1985, 71514). Anthropogenic (human-made) sources, including refined petroleum products, drilling fluids, and high–molecular weight organiccompounds, are also possible.

A DOC concentration of 1.5 mgC/L was measured in a groundwater sample which was collected fromscreen #1 (Bandelier Tuff, Otowi Member) at a depth of 755.0 ft during the first sampling round,November 14, 2000 (Appendix A). This sample contained 0.8 mgC/L hydrophobic fraction consisting of0.4 mgC/L acid fraction and 0.4 mgC/L neutral fraction, with the base fraction <0.1 mgC/L. The neutralfraction consisted of short-chain aliphatic compounds. The groundwater also contained 0.7 mgC/Lhydrophilic fraction, which consisted of 0.7 mgC/L, entirely of the neutral fractions. A DOC concentrationof 1.5 mgC/L was measured in a groundwater sample that was collected from this screen during thefourth sampling round, February 4, 2002 (Appendix A). This sample contained 1.0 mgC/L hydrophobicfraction consisting of 0.6 mgC/L acid fraction and 0.5 mgC/L neutral fraction, with the base fraction<0.1 mgC/L. The groundwater also contained 0.4 mgC/L hydrophilic fraction, which consisted of 0.2mgC/L acid and neutral fractions, each, with the base fraction <0.1 mgC/L.

A DOC concentration of 2.3 mgC/L was measured in a groundwater sample which was collected fromscreen #2 (Puye Formation) at a depth of 892.0 ft on November 15, 2000 (Appendix A). This samplecontained 1.0 mgC/L hydrophobic fraction, consisting of 0.5 mgC/L acid fraction and 0.5 mgC/L neutralfraction, with the base fraction <0.1 mgC/L. The groundwater also contained 1.3 mgC/L hydrophilicfraction, which consisted of 0.3, 0.8, and 0.2 mgC/L acid, neutral, and base fractions, respectively. Thebase fraction consisted of amino acids and other nitrogen-related compounds. A DOC concentration of3.4 mgC/L was measured in a groundwater sample collected from the same screen on February 5, 2002(Appendix A). This sample contained 2.0 mgC/L hydrophobic fraction consisting of 1.0 mgC/L acidfraction and 1.0 mgC/L neutral fraction, with the base fraction <0.1 mgC/L. The groundwater alsocontained 1.5 mgC/L hydrophilic fraction, which consisted of 1.1, 0.3, and 0.1 mgC/L acid, neutral, andbase fractions, respectively.

A DOC concentration of 1.1 mgC/L was measured in a groundwater sample collected from screen #4(Puye Formation) at a depth of 1192.0 ft during the first sampling round conducted on December 4, 2000(Appendix A). This sample contained 0.6 mgC/L hydrophobic fraction, consisting of 0.1 mgC/L acidfraction and 0.5 mgC/L neutral fraction, with the base fraction <0.1 mgC/L. The groundwater alsocontained 0.6 mgC/L hydrophilic fraction, consisting of 0.4 mgC/L acid fraction and 0.2 mgC/L neutralfraction, with the base fraction <0.1 mgC/L. During the fourth sampling round, conducted on February 6,2002, a DOC concentration of 1.2 mgC/L was measured in a groundwater sample collected from screen#4 (Appendix A). This sample contained 0.8 mgC/L hydrophobic fraction, consisting of 0.4 mgC/L acidfraction and 0.4 mgC/L neutral fraction, with the base fraction <0.1 mgC/L. The groundwater alsocontained 0.4 mgC/L hydrophilic fraction consisting entirely of the acid fraction.


ER2004-0072 43 May 2005

A DOC concentration of 1.3 mgC/L was measured in a groundwater sample collected from screen #5(Puye Formation) at a depth of 1303.0 ft on December 7, 2000 (Appendix A). This sample contained0.7 mgC/L hydrophobic fraction, consisting of 0.2 mgC/L acid fraction and 0.5 mgC/L neutral fraction, withthe base fraction <0.1 mgC/L. The groundwater also contained 0.6 mgC/L hydrophilic fraction, consistingof 0.3 mgC/L acid fraction and 0.3 mgC/L neutral fraction, with the base fraction <0.1 mgC/L. Anadditional sample collected from this screen during the fourth sampling round, on February 7, 2002, had aDOC concentration of 2.0 mgC/L (Appendix A). This sample contained 1.5 mgC/L hydrophobic fraction,consisting of 0.2 mgC/L acid fraction and 1.3 mgC/L neutral fraction, with the base fraction <0.1 mgC/L.The groundwater also contained 0.5 mgC/L hydrophilic fraction, consisting of 0.2 mgC/L neutral fractionand 0.3 mgC/L base fraction, with the acid fraction <0.1 mgC/L.

A DOC concentration of 2.1 mgC/L was measured in a groundwater sample collected from screen #8(Puye Formation) at a depth of 1796.0 ft during the first sampling round, December 12, 2000. This samplecontained 1.4 mgC/L hydrophobic fraction, consisting of 0.2 mgC/L acid fraction and 1.2 mgC/L neutralfraction, with the base fraction <0.1 mgC/L. The groundwater also contained 0.7 mgC/L hydrophilicfraction, consisting of 0.4 mgC/L acid fraction and 0.3 mgC/L neutral fraction, with the base fraction<0.1 mgC/L.

Because of insufficient sample volumes, DOC fractionation analyses were not conducted on groundwatersamples collected from screens #3, #6, and #7 during the first characterization sampling round or ongroundwater samples collected from screens #3, #6, #7, and #8 during the fourth characterizationsampling round.

5.2 Comparison to Wells CdV-R-15-3, CdV-R-37-2, and R-19

Wells CdV-R-15-3, CdV-R-37-2, and R-19, which lie to the east and southeast of R-25 (Figure 1.0-1),have several screens set at and beneath the regional water table and provide a comparison for waterchemistry with well R-25 (screens #5 through #8). Well R-25 contains HE compounds (RDX, TNT, andHMX), degradation products of TNT (2-ADNT and 4-ADNT), and chlorinated solvents (PCE and TCE),whereas wells CdV-R-15-3, CdV-R-37-2, and R-19 do not show these anthropogenic (human-made)chemicals. The highest concentrations of HE compounds and chlorinated solvents occur within the uppersaturated zone at well R-25 (screens #1 through #3). Wells CdV-R-15-3, CdV-R-37-2, and R-19contained low concentrations of measurable tritium (less than 3 pCi/L) in the regional aquifer duringcharacterization sampling (ER Project Quarterly Data Reports, Longmire 2002, 73282). By contrast, wellR-25 is characterized by activities of tritium ranging from 3.03 to 140.1 pCi/L, with the highest activities ofthis radionuclide measured in the upper saturated zone (Tables 5.1-5 through 5.1-8). Concentrations oftritium at well R-25 decreased during characterization sampling, suggesting that the well is equilibratingwith groundwater within the upper saturated zone and regional aquifer.

The detection of HE compounds, degradation products from HE compounds, chlorinated solvents, andtritium confirms that the groundwater at well R-25 has been impacted by Laboratory discharges.Concentrations of HE compounds and chlorinated solvents in the regional aquifer at well R-25 decreasedduring characterization sampling, suggesting that these contaminants were introduced from the uppersaturated zone during well drilling, construction, and development.


May 2005 44 ER2004-0072

5.3 Representiveness of Data

Several analyte suites at well R-25 are not representative of native groundwater and a discussion on thistopic has been addressed in previous sections. Major ion chemistry (calcium, sodium, and sulfate),phosphate, and trace elements including iron, manganese, nickel, strontium, and uranium are notrepresentative of pre-drilling conditions at well R-25 because of the presence of residual chemicals usedduring well construction, including sodium acid pyrophosphate. Groundwater samples collected fromscreens #1, #7, and #8 are the least impacted by residual chemicals, based on observed distributions ofmajor ions and trace elements. Distributions of RDX, however, are not affected by residual chemicalsbased on the compound’s persistent behavior under oxidizing and mostly near-neutral pH conditionscharacteristic of groundwater at well R-25. Concentrations of RDX decreased during characterizationsampling at well R-25 in response to the well cleaning up and discontinuing discharge from the 260outfall, a major source of HE at TA-16. Degradation products of RDX including MNX, DNX, and TNX aretypically less than detection at well R-25. Other HE compounds (TNT and HMX) and their degradationproducts also are not impacted by residual chemicals. Reduction of TNT leading to the formation of2-ADNT and 4-ADNT may occur in the alluvial sediments and groundwater that contain DOC and TOC.Distributions of stable isotopes (dD and d18O) and tritium are not impacted by the residual chemicalsbecause they are nonreactive with groundwater, organic-poor aquifer material, and drilling fluids.Reductive dechlorination of both PCE and TCE, which are solvents known to be used at TA-16, appearsto be unlikely in the presence of small concentrations of EZ Mud‚ (reducing agent). Concentrations ofthese two solvents generally vary over time within the upper saturated zone. Long-term monitoring ofinorganic and organic chemicals is highly recommended at well R-25. Other wells recently drilled near R-25 can be used to provide additional monitoring and characterization data for the upper saturated zonewhere the majority of HE contamination occurs.

6.0 GROUNDWATER GEOCHEMICAL CALCULATIONS

6.1 Computer Program Selection

Results of geochemical calculations suggest that groundwater chemistry and mineral stability are evolvingat well R-25 as residual fluids used during well construction and development break down. Equilibriumconditions should be reestablished after the residual drilling fluid has been removed from the well.Geochemical calculations of groundwater samples collected from well R-25 (screens #1, #4, #5, and #8)were conducted to evaluate speciation of solutes (dissolved species) and to quantify the state ofsaturation of solid phases that control groundwater composition under equilibrium conditions. Thesecalculations provide insight into processes that control water/rock interactions, including mineralprecipitation and adsorption occurring in both natural and contaminated water. Calculations wereconducted to evaluate the geochemical processes influencing natural water composition, dissociation ofresidual drilling fluids, and contaminant chemistry and transport.

Calculations of solute speciation, partial pressure of CO2 gas, and solid-phase saturation indices weremade using the computer program MINTEQA2 (Allison et al. 1991, 49930), with single-ion activitycoefficients calculated using the Davies equation. MINTEQA2 was developed by Battelle Northwest forthe EPA for use at RCRA and Superfund sites. The model is constrained by solute concentrations andinvolves silicate, glass, ferric oxide, and clay minerals identified at well R-25 (Broxton et al. 2002, 72640).MINTEQA2 quantifies possible rock/water and water/atmosphere reactions, but modeling results shouldbe interpreted with caution and are limited by the scope of our understanding of hydrologic flow conditions(saturated and unsaturated), possible reaction mechanisms, and kinetic constraints in a disequilibrium-


ER2004-0072 45 May 2005

dominated system. One source of error when using the computer program is the accuracy of the chemicalthermodynamic data contained in the database. Errors are greater for trace solutes for whichexperimental data are inaccurate and/or incomplete, including Tl, Be, and Cd. Fewer errors areassociated with the major ions and with solid phases consisting of carbonate, silicate, and metaloxyhydroxide minerals (Langmuir 1997, 56037).

6.2 Speciation Calculations

Speciation calculations using the computer program MINTEQA2 (Allison et al. 1991, 49930) wereperformed to evaluate stable forms of dissolved solutes, which influence mineral precipitation andadsorption reactions occurring in natural and contaminated waters. Fate and transport of anthropogenicphosphate observed at well R-25 are controlled by both aqueous speciation and adsorption/desorptionprocesses. Input files for the calculations are provided in Appendix B. Inorganic solutes of importance atwell R-25 included major ions, barium, and phosphate.

Concentrations of detectable dissolved phosphate (as P) in the upper saturated zone at well R-25(screens #1 and #2) ranged from 0.08 to 19.0 mg/L (Tables 5.1-1 and 5.1-2). Concentrations of this anionwithin the alternating wet and dry zones (screen #4) and in the regional aquifer (screens #5 through #8)ranged from 0.10 to 0.80 mg/L and from 0.49 to 8.4 mg/L, respectively. When detected, phosphate ispredicted to be stable mainly as dissolved HPO4

2-, with minor amounts of H2PO4-. Phosphate is predicted

to form complexes with calcium (CaHPO40 and CaPO4

-) and magnesium (MgHPO40). The free or

uncomplexed PO43- anion is available for adsorption and precipitation reactions in which this species

strongly adsorbs onto hydrous ferric oxide (Langmuir 1997, 56037). Sodium acid pyrophosphate is thedominant source of phosphate observed in well R-25.

Major ions Ca2+, Mg2+, Na+, K+, Cl-, SO42-, and HCO3

- were calculated to be stable mainly as free oruncomplexed solutes. Varying amounts of calcium and magnesium, however, are predicted to form metalcomplexes with bicarbonate, carbonate, phosphate, biphosphate, and sulfate depending on theconcentrations of these ligands.

Concentrations of detectable dissolved Ba in the upper saturated zone, the alternating wet and dry zones,and in the regional aquifer at well R-25 ranged from 0.002 to 0.009 mg/L, 0.019 to 0.03 mg/L, and 0.008to 0.034 mg/L, respectively. Barium is predicted to be stable as dissolved Ba2+, and thecarbonate/bicarbonate species BaCO3

0 and BaHCO3+ are minor components in screen #2 which was

characterized by higher concentrations of alkalinity. Cation exchange is probably the dominant process,resulting in low concentrations of this alkaline earth in groundwater in well R-25 because the groundwatergenerally is undersaturated with respect to BaSO4 (barite) and BaCO3 (witherite) (see section 6.3).

6.3 Saturation Index Calculations

Solid-solution phase calculations were performed with MINTEQA2 (Allison et al. 1991, 49930) usinganalytical results (screens #1, #4, #5, and #8) obtained from filtered (less than 0.45 �m membrane)groundwater samples. The saturation index (SI) is a measure of the degree of saturation,undersaturation, or oversaturation of a solid phase in water (SI = log10 {activity product/solubility product};at equilibrium SI = 0 ± 0.05) (Langmuir 1997, 56037). The purpose of the calculations was to assess theimportance of precipitation reactions for controlling the transport of barium, calcium, phosphate, and othersolutes at well R-25.


May 2005 46 ER2004-0072

Figure 6.3-1 shows the SI values for several key phases for well R-25 in the upper saturated zone(screen #1, 755.0 ft). Groundwater in this zone at well R-25 was calculated to be undersaturated withrespect to BaSO4, BaCO3, silica gel, silica precipitate, CaCO3 (calcite), CaHPO4, and b-Ca3(PO4)2 andoversaturated with respect to Ca5(PO4)3OH (hydroxylapatite) and Ca5(PO4,CO3)3F (Figure 6.3-1). Thesaturation indices for Ca5(PO4,CO3)3F varied from 8.43 to 19.95 in groundwater samples collected fromscreens #1, #4, #5, and #8. They are not shown in Figures 6.3-1 through 6.3-4 because of their largepositive values. Hydroxylapatite and fluoroapatite are very insoluble and are likely to persist in well R-25.

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

CaHPO4 B-Ca3(PO4)2 Ca5(PO4)3OH CaCO3 BaCO3 BaSO4 SiO2 gel SiO2 ppt PCO2

PHASE

Saturation + or - error (0.05)

Sampled 02/04/02

Sampled 08/13/01

Sampled 05/03/01

Sampled 11/14/00

Figure 6.3-1. Results of saturation index calculations using MINTEQA2 for well R-25 (upper

saturated zone, 755.0 ft), screen #1.

These results are generally consistent with observed mineralogy (i.e., the absence of calcium carbonate)in the Otowi Member of the Bandelier Tuff at well R-25. Calculated log10PCO2 gas varies from –2.83 to–2.10 atmosphere for the upper saturated zone (screen #1) at well R-25 groundwater, which is controlledby pH, temperature, and alkalinity (natural and oxidation of drilling fluids). Variation in the SI values forCaCO3 and partial pressure for CO2 gas, and other carbonate phases, is the result of differingtemperature, carbonate alkalinity, pH, and activities of calcium and other alkaline earth metals dissolvedin the groundwater.

Results of mineral saturation calculations for well R-25 (alternating wet and dry zones, Puye Formation)are shown in Figure 6.3-2, using analytical results for groundwater samples collected at 1192.0 ft. Thegroundwater at well R-25 in screen #4 was calculated to be undersaturated with respect to CaCO3,BaCO3, CaHPO4, silica gel, and silica precipitate (Figure 6.3-3). Groundwater was calculated to be


ER2004-0072 47 May 2005

oversaturated with respect to Ca5(PO4)3OH and Ca5(PO4,CO3)3F. Groundwater showed variablesaturation with respect to b-Ca3(PO4)2 and BaSO4 based on temperature, pH, and barium, calcium,phosphate, and sulfate activities. Calculated log10PCO2 gas in the Puye Formation (1192.0 ft) varied from–2.87 to –2.40 atmosphere for the alternating wet and dry zones at well R-25; this is controlled by pH,carbonate alkalinity (natural and from oxidation of drilling fluids), and temperature of groundwater.Variation in the SI values for CaCO3 and BaCO3 is the result of differing temperatures, carbonatealkalinity, pH, and activities of calcium and barium dissolved in groundwater.

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9


PHASE


Sampled 02/06/02

Sampled 08/15/01

Sampled 05/07/01

Sampled 12/04/00

Figure 6.3-2. Results of saturation index calculations using MINTEQA2 for well R-25 (wet and

dry zones, 1192.0 ft), screen #4.

Results of mineral saturation calculations for well R-25 (regional aquifer, Puye Formation) are shown inFigure 6.3-3 using analytical results for groundwater samples collected at 1303.0 ft (screen #5). Theregional aquifer at well R-25 in screen #5 was calculated to be undersaturated with respect to CaCO3,BaCO3, BaSO4, CaHPO4, silica gel, and silica precipitate (Figure 6.3-3). Groundwater was calculated tobe oversaturated with respect to Ca5(PO4)3OH and Ca5(PO4,CO3)3F. The groundwater showed variablesaturation with respect to b-Ca3(PO4)2 based on temperature and calcium and phosphate activities.Calculated log10PCO2 gas in the Puye Formation (1303.0 ft) varied from –2.81 to –2.57 atmosphere forthe regional aquifer at well R-25; this is controlled by pH, carbonate alkalinity (natural and from oxidationof drilling fluids), and temperature of groundwater. Variation in the SI values for CaCO3 and BaCO3 is theresult of differing temperatures, carbonate alkalinity, pH, and activities of calcium and barium dissolved ingroundwater.


May 2005 48 ER2004-0072

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9


PHASE


Sampled 02/07/02

Sampled 08/15/01

Sampled 05/08/01

Sampled 12/07/00

Figure 6.3-3. Results of saturation index calculations using MINTEQA2 for well R-25 (regional

aquifer, 1303.0 ft), screen #5.

Results of mineral saturation calculations for well R-25 (regional aquifer, Puye Formation) are shown inFigure 6.3-4, using analytical results for groundwater samples collected at 1796.0 ft (screen #8). Theregional aquifer at well R-25 in screen #8 was calculated to be undersaturated with respect to CaCO3,BaCO3, BaSO4, CaHPO4, b-Ca3(PO4)2, silica gel, and silica precipitate (Figure 6.3-4). Groundwater wascalculated to be oversaturated with respect to Ca5(PO4)3OH and Ca5(PO4,CO3)3F. Calculated log10PCO2

gas in the Puye Formation (1796.0 ft) varied from –3.33 to –2.76 atmosphere for the regional aquifer atwell R-25; this is controlled by pH, carbonate alkalinity (natural and from oxidation of drilling fluids), andtemperature of groundwater. Variation in the SI values for CaCO3 and BaCO3 is the result of differingtemperatures, carbonate alkalinity, pH, and activities of calcium and barium dissolved in groundwater.

Because of varying pH, alkalinity, temperature, and concentrations of calcium, phosphate, and alkalinity,SIs for the above minerals vary by several orders of magnitude. Calculations suggest that well R-25 iscontinuously re-equilibrating with groundwater that is entering the well screens. Fewer variations in SIsand partial pressure of carbon dioxide gas are expected when equilibrium conditions are established andresidual fluids used during well drilling and construction are removed from the well. The amount of timerequired for well R-25 to reach pre-drilling conditions, however, is controlled by site-specific reaction ratesor kinetics that influence mineral stability. Continuous monitoring of inorganic analytes will provide thisinformation.


ER2004-0072 49 May 2005

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8


PHASE


Sampled 02/12/02

Sampled 08/20/01

Sampled 05/14/01

Sampled 12/12/00

Figure 6.3-4. Results of saturation index calculations using MINTEQA2 for well R-25 (regional

aquifer, 1796.0 ft), screen #8.

7.0 CONCLUSIONS

Four rounds of groundwater characterization samples were collected at well R-25 at measurement depthsof 755.0, 892.0, 1063.0, 1192.0, 1303.0, 1406.0, 1605.0, and 1796.0 ft. These samples were chemicallycharacterized for HE compounds, HE-degradation products, radionuclides, metals and trace elements,major ions, DOC, TOC, organic compounds, and stable isotopes. Detectable concentrations of RDX andTNT within the upper saturated zone (screens #1 through #3) ranged from 0.00086 to 0.065 mg/L andfrom 0.00036 to 0.0043 mg/L, respectively. Detectable concentrations of RDX within the alternating wetand dry zones (screen #4) ranged from 0.0052 to 0.0094 mg/L. Concentrations of TNT were less thandetection limits (0.0001 to 0.00025 mg/L) in screen #4. Detectable concentrations of RDX and TNT withinthe regional aquifer (screens #5 through #8) ranged from 0.0033 to 0.028 mg/L and from 0.00067 to0.0022 mg/L, respectively. Degradation (reduction) products of TNT, including 2-ADNT and 4-ADNT,were observed at well R-25, which confirms that active natural attenuation of TNT is occurring within theupper saturated zone, alternating wet and dry zones, and the regional aquifer. Degradation (reduction)products of RDX, including MNX, DNX, and TNX, were observed in screen #1 at concentrations less than0.0005 mg/L, suggesting that RDX is very persistent at well R-25. It is hypothesized that DOC is the mostlikely electron donor assisting in the partial to complete reduction TNT at well R-25.


May 2005 50 ER2004-0072

Activities of tritium at well R-25 ranged from 3.03 to 140.1 pCi/L, suggesting that a component of thegroundwater is less than 60 yr old and postdates the beginning of nuclear testing. The detection of tritiumin this elevated amount also indicates that well R-25 most likely has been impacted by Laboratoryactivities. A fraction of tritium, however, is derived from local precipitation because upgradient springswest of the Laboratory contain tritium. Americium-241, cesium-137, plutonium-238, plutonium-239,240,and strontium-90 were not detected in the groundwater samples collected from well R-25. Activities ofuranium-234, uranium-235, and uranium-238 were detected only at concentrations less than 2.5 pCi/L,which are generally similar to activities of isotopic uranium measured in supply wells O-4, PM-1 throughPM-5, and the Guaje well field. Gross alpha/beta and gross beta activities were generally less than7 pCi/L. Measurable gross gamma between 58 to 186 pCi/L was attributed to isotopes within the naturaluranium-238, uranium-235, and thorium-232 decay chains.

Concentrations of natural iron within the upper saturated zone and regional aquifer exceeded both theEPA secondary standard for drinking water (0.3 mg/L) and the NMQWCC standard for a water supply(1.0 mg/L) for one sampling round in screen #2 which was conducted on May 4, 2001, and for another inscreen #8 which was conducted on December 12, 2000. Concentrations of manganese in the regionalaquifer exceeded both the EPA secondary standard of 0.05 mg/L and the NMWQCC standard of 0.2mg/L for domestic water supply for several sampling rounds. Concentrations of natural iron andmanganese generally decreased during characterization sampling, suggesting that residual drilling fluidsare breaking down or dissociating and that the well is in the process of re-equilibrating with groundwaterin the regional aquifer. Concentrations of dissolved nickel increased from 0.010 to 0.460 mg/L in screen#1 during characterization sampling. The EPA and NMWQCC standards for nickel are 0.1 and 0.2 mg/L,respectively. The source of nickel could result from reductive dissolution of ferric oxyhydroxide and/ormanganese oxide because concentrations of manganese increased during characterization sampling inscreen #1.

Groundwater within the upper saturated zone ranged from a calcium-sodium-bicarbonate ioniccomposition within the Bandelier Tuff to a sodium-calcium-bicarbonate ionic composition within the PuyeFormation. Groundwater within the alternating wet and dry zone (screen #4) (1192.0 ft) consisted of acalcium-sulfate ionic composition within the Puye Formation which is influenced by the presence ofchemicals used during well drilling and construction. Groundwater within the regional aquifer ischaracterized by a calcium-sodium-bicarbonate ionic composition.

Stable isotope ratios of dD and d18O imply that the sampled groundwater at well R-25 was derived from alocal meteoric source consisting of precipitation and surface water and that the source of recharge is thesame for both the upper saturated zone and regional aquifer groundwater. The most likely source ofrecharge is the Sierra de los Valles, based on similarities in dD and d18O ratios between well R-25 andseveral springs. Results of d15NAIR-NO3 analyses suggest that fractionation of nitrate plus nitrite hasoccurred (+1.8 to +7.5‰) in groundwater at well R-25.

Several analyte suites at well R-25 are not representative of native groundwater. Major ion chemistry(calcium, sodium, and sulfate), phosphate, and trace elements including iron, manganese, nickel,strontium, and uranium are not representative of pre-drilling conditions at well R-25 because of thepresence of residual chemicals used during well construction, including sodium acid pyrophosphate.Groundwater samples collected from screens #1, #7, and #8 are the least impacted by residualchemicals, based on observed distributions of major ions and trace elements. Distributions of RDX,however, are not affected by residual chemicals based on the compound’s persistent behavior underoxidizing and mostly near-neutral pH conditions characteristic of groundwater at well R-25.


ER2004-0072 51 May 2005

Concentrations of RDX decreased during characterization sampling at well R-25 in response to the wellcleaning up and discontinuing discharge from the 260 outfall, a major source of HE at TA-16. Degradationproducts of RDX including MNX, DNX, and TNX are typically less than detection at well R-25. Other HEcompounds (TNT and HMX) and their degradation products also are not impacted by residual chemicals.Reduction of TNT leading to the formation of 2-ADNT and 4-ADNT may occur in the alluvial sedimentsand groundwater that contain DOC and TOC. Distributions of stable isotopes (dD and d18O) and tritiumare not impacted by the residual chemicals because they are nonreactive with groundwater, organic-pooraquifer material, and drilling fluids. Reductive dechlorination of both PCE and TCE, which are solventsknown to be used at TA-16, appears to be unlikely in the presence of small concentrations of EZ Mud‚(reducing agent). Concentrations of these two solvents generally vary over time within the uppersaturated zone. Long-term monitoring of inorganic and organic chemicals is highly recommended at wellR-25. Other wells recently drilled near R-25 can be used to provide additional monitoring andcharacterization data for the upper saturated zone where the majority of HE contamination occurs.

Geochemical calculations using the computer program MINTEQA2 were performed to evaluate solutespeciation and mineral equilibrium in assessing groundwater chemistry and refining the geochemicalconceptual model for well R-25. Geochemical calculations show that well R-25 is in the process of re-equilibrating with groundwater that is entering the well screens because of the decrease in residualdrilling fluid. Dissolved Ba is calculated to be stable mainly as Ba2+ in groundwater. Groundwater in theupper saturated zone at well R-25 was calculated to be undersaturated with respect to BaSO4, BaCO3,silica gel, silica precipitate, CaCO3 (calcite), CaHPO4, and b-Ca3(PO4)2, and all groundwater wasoversaturated with respect to Ca5(PO4)3OH (hydroxylapatite) and Ca5(PO4,CO3)3F. Groundwater withinthe alternating wet and dry zones was calculated to be undersaturated with respect to CaCO3, BaCO3,CaHPO4, silica gel, and silica precipitate. This groundwater showed variable saturation with respect tob-Ca3(PO4)2 and BaSO4 based on temperature and barium, calcium, phosphate, and sulfate activities.The regional aquifer at well R-25 was calculated to be undersaturated with respect to CaCO3, BaCO3,BaSO4, CaHPO4, silica gel, and silica precipitate. Regional aquifer groundwater showed variablesaturation with respect to b-Ca3(PO4)2 based on temperature, pH, and calcium and phosphate activities.

8.0 ACKNOWLEDGEMENTS

The following individuals contributed to the geochemical investigation conducted during characterizationsampling at well R-25.

A. Groffman provided data management.

A. Banar, J. Kofoed, S. Allen, and D. Steven collected groundwater samples and recorded fieldparameters at well R-25.

The Groundwater Protection Program, led by C. Nylander, participated in the planning of data collectionduring the investigation.

R. Enz provided DOE oversight during the investigation.

D. Broxton, J. Fabryka-Martin, D. Hickmott, E. Louderbough, J. McCann, K. VanDerpoel, and T. Whitacrewere reviewers for the document.

C. Hedquist and L. Levine were the editors for this document.


May 2005 52 ER2004-0072

D. Broxton and J. McCann supported this investigation as leaders of the Groundwater ProtectionProgram.

9.0 REFERENCES

Allison, J. D., D. S. Brown, and K. J. Novo-Gradac, March 1991. “MINTEQA2/PRODEFA2, AGeochemical Assessment Model for Environmental Systems: Version 3.0 User’s Manual,” EPA/600/3-91/021, Office of Research and Development, Athens, Georgia. (Allison et al. 1991, 49930)

Blake, W. D., F. Goff, A. I. Adams, and D. Counce, May 1995. “Environmental Geochemistry for Surfaceand Subsurface Waters in the Pajarito Plateau and Outlying Areas, New Mexico,” Los Alamos NationalLaboratory Report LA-12912-MS, Los Alamos, New Mexico. (Blake et al. 1995, 49931)

Bloss, F. W., 1971. Crystallography and Crystal Chemistry, Holt, Rinehart, and Winston, New York,New York. (Bloss 1971, 86538)

Broxton, D., R. Warren, P. Longmire, R. Gilkeson, S. Johnson, D. Rogers, W. Stone, B. Newman,M. Everett, D. Vaniman, S. McLin, J. Skalski, and D. Larssen, March 2002. “Characterization Well R-25Completion Report,” Los Alamos National Laboratory Report LA-13909-MS, Los Alamos, New Mexico.(Broxton et al. 2002, 72640)

Clark, I. D., and Fritz, P., 1997, Environmental Isotopes in Hydrogeology, Lewis Publishers, New York,New York. (Clark and Fritz 1997, 59168)

EPA (US Environmental Protection Agency) 2000. “Drinking Water Standards and Health Avisories”EPA 822-B-00-001, Office of Water, US Environmental Protection Agency, Washington D.C. (EPA 2000,70122)

ER Project Quarterly Data Reports for wells CdV-R-15-3 and CdV-R-37-2

ESP (Environmental Surveillance Program), December 2000. “Environmental Surveillance at Los Alamosduring 1999,” Los Alamos National Laboratory Report LA-13775-ENV, UC902, Los Alamos, New Mexico.(ESP 2000, 68661)

ESP (Environmental Surveillance Program), January 2002. “Environmental Surveillance at Los Alamosduring 2000,” Los Alamos National Laboratory Report LA-13861-ENV, Los Alamos, New Mexico. (ESP2002, 71301)

Hofstetter, T. B., C. G. Heijman, S. B. Haderlein, C. Holliger, and R. P. Schwarzenbach, 1999. “CompleteReduction of TNT and Other (Poly)nitroaromatic Compounds Under Iron-Reducing SubsurfaceConditions,” Environmental Science and Technology, Vol. 33, No. 9, pp. 1479–1487. (Hofstetter et al.1999, 71307)

Langmuir, D., 1997. Aqueous Environmental Geochemistry, Prentice-Hall, Inc., Upper Saddle River,New Jersey. (Langmuir 1997, 56037)

LANL (Los Alamos National Laboratory), January 31, 1996. “Groundwater Protection ManagementProgram Plan,” Rev. 2.0, Los Alamos, New Mexico. (LANL 1996, 70215)

LANL (Los Alamos National Laboratory), May 22, 1998. “Hydrogeologic Workplan,” Los Alamos,New Mexico. (LANL 1998, 59599)


ER2004-0072 53 May 2005

LANL (Los Alamos National Laboratory), September 2003. “Phase III RFI Report for SWMU 16-021(c)-99,” Los Alamos National Laboratory document LA-UR-03-5248, Los Alamos, New Mexico. (LANL 2003,77965)

Longmire, P., June 2002. ”Characterization Well R-12 Geochemistry Report,” Los Alamos NationalLaboratory Report LA-13952-MS, Los Alamos, New Mexico. (Longmire 2002, 72800)

Longmire, P., June 2002. ”Characterization Well R-19 Geochemistry Report,” Los Alamos NationalLaboratory Report LA-13964-MS, Los Alamos, New Mexico. (Longmire 2002, 73282)

Spain, J. C., J. B. Hughes, and H.-J. Knackmuss, 2000. Biodegradation of Nitroaromatic Compounds andExplosives, Lewis Publishers, Boca Raton, Florida, 434 p. (Spain et al. 2000, 71317)

Stone, W., August 1, 2000. “Laboratory-Derived Hydraulic Properties of Selected Materials fromWells 4-9, R-12, and R-25,” Los Alamos National Laboratory document LA-UR-00-3587, Los Alamos,New Mexico. (Stone 2000, 66781)

Thurman, E. M., 1985. Organic Geochemistry of Natural Waters, Martinus Nijhoff/Dr. W. Junk Publishers,Boston, Massachusetts, p. 14. (Thurman 1985, 71514)

Vilks, P., and D. B. Bachinski, 1996. “Characterization of Organics in Whiteshell Research AreaGroundwater and the Implications for Radionuclide Transport,” Applied Geochemistry, Vol. 11, No. 3,pp. 387–402. (Vilks and Bachinski 1996, 71515)

Appendix A

Groundwater Analytical Results


ER2004-0072 A-1 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

Fie

ld P

aram

eter

175

511

/14/

00N

F1

17.

65—

> 6

& <

90/

1>

6 &

< 9

0/1

m

175

511

/14/

00N

F1

122

4—

—0/

1—

0/1

175

511

/14/

00N

F1

19

——

0/1

—0/

1

175

511

/14/

00N

F1

11.

6—

—0/

1—

0/1

An

alyt

e


May 2005 A-2 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard


ER2004-0072 A-3 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard


May 2005 A-4 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

d d d


ER2004-0072 A-5 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

Fie

ld P

aram

eter

m

An

alyt

e


May 2005 A-6 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


ER2004-0072 A-7 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


May 2005 A-8 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

d d d


ER2004-0072 A-9 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

Fie

ld P

aram

eter

310

6312

/01/

00N

F1

111

.67

—>

6 &

< 9

0/1

> 6

& <

90/

1

m

310

6312

/01/

00N

F1

153

40/

10/

1

310

6312

/01/

00N

F1

19.

10/

10/

1

310

6312

/01/

00N

F1

10.

80/

10/

1

An

alyt

e


May 2005 A-10 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

d d


ER2004-0072 A-11 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

o

Det

ects

>N

M

Gro

un

dw

ate

Sta

nd

ard

(mg

/L)

Fie

ld P

aram

eter

411

9212

/04/

00N

F1

17.

64—

> 6

& <

90/

1>

6 &

< 9

0/1

m

411

9212

/04/

00N

F1

171

6—

—0/

1—

0/1

411

9212

/04/

00N

F1

18.

8—

—0/

1—

0/1

411

9212

/04/

00N

F1

15.

3—

—0/

1—

0/1

An

alyt

e


May 2005 A-12 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n—

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


ER2004-0072 A-13 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n—

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


May 2005 A-14 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n—

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

d d d


ER2004-0072 A-15 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

Fie

ld P

aram

eter

513

0312

/07/

00N

F1

17.

73—

> 6

& <

90/

1>

6 &

< 9

0/1

m

513

0312

/07/

00N

F1

121

0—

—0/

1—

0/1

513

0312

/07/

00N

F1

110

.8—

—0/

1—

0/1

513

0312

/07/

00N

F1

16.

2—

—0/

1—

0/1

An

alyt

e

513

0312

/07/

00N

F1

110

0000

——

——

—

Alu

min

um5

1303

12/0

7/00

F1

0—

[15]

500/

150

000/

1

Alu

min

um5

1303

12/0

7/00

NF

10

—[2

0]—

——

—

Am

mon

ia (a

s N

)5

1303

12/0

7/00

F1

0—

[500

]—

——

—

Am

mon

ia (a

s N

)5

1303

12/0

7/00

NF

10

—[5

00]

——

——

Ant

imon

y5

1303

12/0

7/00

F1

0—

[0.3

51]

60/

1—

—

Ant

imon

y5

1303

12/0

7/00

NF

10

—[1

.13]

——

——

Ars

enic

513

0312

/07/

00F

11

2.6

—50

0/1

100

0/1

Ars

enic

513

0312

/07/

00N

F1

0—

[1.5

]—

——

—

Bar

ium

513

0312

/07/

00F

11

8.4

—20

000/

110

000/

1

Bar

ium

513

0312

/07/

00N

F1

19.

2—

——

——

Ber

ylliu

m5

1303

12/0

7/00

F1

10.

027

—4

0/1

——

Ber

ylliu

m5

1303

12/0

7/00

NF

11

0.04

1—

——

——

Bor

on5

1303

12/0

7/00

F1

113

0—

——

750

0/1

Bor

on5

1303

12/0

7/00

NF

11

140

——

——

—

Bro

mid

e5

1303

12/0

7/00

F1

0—

[200

]—

——

—

Bro

mid

e5

1303

12/0

7/00

NF

10

—[2

00]

——

——


May 2005 A-16 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

Cad

miu

m5

1303

12/0

7/00

F1

0—

[0.0

59]

50/

110

0/1

Cad

miu

m5

1303

12/0

7/00

NF

11

0.07

3—

——

——

Cal

cium

513

0312

/07/

00F

11

2200

0—

——

——

Cal

cium

513

0312

/07/

00N

F1

124

000

——

——

—

Chl

orid

e5

1303

12/0

7/00

F1

156

00—

2500

000/

125

0000

0/1

Chl

orid

e5

1303

12/0

7/00

NF

11

6600

——

——

—

Chr

omiu

m5

1303

12/0

7/00

F1

0—

[0.5

2]10

00/

150

0/1

Chr

omiu

m5

1303

12/0

7/00

NF

11

9.4

——

——

—

Cob

alt

513

0312

/07/

00F

10

—[1

.5]

——

500/

1

Cob

alt

513

0312

/07/

00N

F1

0—

[1.6

]—

——

—

Cop

per

513

0312

/07/

00F

10

—[0

.45]

1300

0/1

1000

0/1

Cop

per

513

0312

/07/

00N

F1

0—

[0.4

5]—

——

—

Cya

nide

,Tot

al5

1303

12/0

7/00

NF

10

—[1

0]—

——

—

Fluo

ride

513

0312

/07/

00F

11

110

—40

000/

116

000/

1

Fluo

ride

513

0312

/07/

00N

F1

110

0—

——

——

Iron

513

0312

/07/

00F

10

—[4

8]30

00/

110

000/

1

Iron

513

0312

/07/

00N

F1

0—

[90]

——

——

Lead

513

0312

/07/

00F

10

—[0

.031

]15

0/1

500/

1

Lead

513

0312

/07/

00N

F1

0—

[0.0

19]

——

——

Mag

nesi

um5

1303

12/0

7/00

F1

147

00—

——

——

Mag

nesi

um5

1303

12/0

7/00

NF

11

5000

——

——

—

Man

gane

se5

1303

12/0

7/00

F1

121

0—

501/

120

01/

1

Man

gane

se5

1303

12/0

7/00

NF

11

220

——

——

—

Mer

cury

513

0312

/07/

00F

10

—[0

.014

]2

0/1

——

Mer

cury

513

0312

/07/

00N

F1

0—

[0.0

14]

——

20/

1

Mol

ybde

num

513

0312

/07/

00F

11

4.9

——

——

—


ER2004-0072 A-17 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

Mol

ybde

num

513

0312

/07/

00N

F1

110

——

——

—

Nic

kel

513

0312

/07/

00F

11

7.5

—10

00/

120

00/

1

Nic

kel

513

0312

/07/

00N

F1

114

——

——

—

Nitr

ate

+ N

itrite

(as

N)

513

0312

/07/

00F

10

—[1

00]

1000

00/

1—

—

Nitr

ate

+ N

itrite

(as

N)

513

0312

/07/

00N

F1

0—

[100

]—

——

—

Per

chlo

rate

513

0312

/07/

00N

F1

0—

[1.0

4]—

——

—

Pho

spho

rus

(as

P)

513

0312

/07/

00F

11

2800

——

——

—

Pho

spho

rus

(as

P)

513

0312

/07/

00N

F1

128

00—

——

——

Pot

assi

um5

1303

12/0

7/00

F1

112

00—

——

——

Pot

assi

um5

1303

12/0

7/00

NF

11

1400

——

——

—

Sel

eniu

m5

1303

12/0

7/00

F1

0—

[1.7

]50

0/1

500/

1

Sel

eniu

m5

1303

12/0

7/00

NF

11

2.6

——

——

—

513

0312

/07/

00F

11

4920

0—

——

——

513

0312

/07/

00N

F1

153

500

——

——

—

Silv

er5

1303

12/0

7/00

F1

0—

[0.7

8]10

00/

150

0/1

Silv

er5

1303

12/0

7/00

NF

10

—[0

.78]

——

——

Sod

ium

513

0312

/07/

00F

11

1400

0—

——

——

Sod

ium

513

0312

/07/

00N

F1

115

000

——

——

—

Stro

ntiu

m5

1303

12/0

7/00

F1

115

0—

——

——

Stro

ntiu

m5

1303

12/0

7/00

NF

11

170

——

——

—

Sul

fate

513

0312

/07/

00F

11

9600

—25

0000

0/1

6000

000/

1

Sul

fate

513

0312

/07/

00N

F1

111

000

——

——

—

Thal

lium

513

0312

/07/

00F

11

0.32

6—

20/

1—

—

Thal

lium

513

0312

/07/

00N

F1

0—

[0.0

19]

——

——

Ura

nium

513

0312

/07/

00F

11

2.17

—20

—50

00—

Ura

nium

513

0312

/07/

00N

F1

11.

99—

——

——


May 2005 A-18 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

Van

adiu

m5

1303

12/0

7/00

F1

0—

[1.9

]—

——

—

Van

adiu

m5

1303

12/0

7/00

NF

10

—[2

.1]

——

——

Zinc

513

0312

/07/

00F

10

—[1

1]50

000/

110

000

0/1

Zinc

513

0312

/07/

00N

F1

0—

[9.7

0]—

——

—

d5

1303

12/0

7/00

NF

11

-81

——

——

—

dO

18/O

165

1303

12/0

7/00

NF

11

-12

——

——

—


ER2004-0072 A-19 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

Fie

ld P

aram

eter

614

0612

/08/

00N

F1

17.

91—

> 6

& <

90/

1>

6 &

< 9

0/1

m

614

0612

/08/

00N

F1

123

2—

—0/

1—

0/1

614

0612

/08/

00N

F1

110

.9—

—0/

1—

0/1

614

0612

/08/

00N

F1

11.

8—

—0/

1—

0/1

An

alyt

e


May 2005 A-20 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


ER2004-0072 A-21 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


May 2005 A-22 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

d d d


ER2004-0072 A-23 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

Fie

ld P

aram

eter

716

0512

/11/

00N

F1

17.

90—

> 6

& <

90/

1>

6 &

< 9

0/1

m

716

0512

/11/

00N

F1

118

6—

—0/

1—

0/1

716

0512

/11/

00N

F1

111

.2—

—0/

1—

0/1

716

0512

/11/

00N

F1

13.

5—

—0/

1—

0/1

An

alyt

e


May 2005 A-24 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


ER2004-0072 A-25 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


May 2005 A-26 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

d d d


ER2004-0072 A-27 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

Fie

ld P

aram

eter

817

9612

/12/

00N

F1

18.

07—

> 6

& <

90/

1>

6 &

< 9

0/1

m

817

9612

/12/

00N

F1

120

4—

—0/

1—

0/1

817

9612

/12/

00N

F1

110

.9—

—0/

1—

0/1

817

9612

/12/

00N

F1

114

.3—

—0/

1—

0/1

An

alyt

e


May 2005 A-28 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


ER2004-0072 A-29 May 2005

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


May 2005 A-30 ER2004-0072

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)

d d d


ER2004-0072 A-31 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


May 2005 A-32 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


ER2004-0072 A-33 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


May 2005 A-34 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


ER2004-0072 A-35 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


May 2005 A-36 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


ER2004-0072 A-37 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


May 2005 A-38 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>N

ME

D

Gro

un

dw

ater

Sta

nd

ard

(mg

/L)


ER2004-0072 A-39 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

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n

Nu

mb

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f

An

alys

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Nu

mb

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f

Det

ects

Det

ecte

d

Val

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(pC

i/L)

No

nd

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t

ed V

alu

e

(pC

i/L)

Dri

nki

ng

Wat

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CL

b

(pC

i/L)

Fre

qu

ency

of

Det

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>D

rin

kin

g W

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MC

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May 2005 A-40 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

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f

An

alys

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Nu

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f

Det

ects

Det

ecte

d

Val

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(pC

i/L)

No

nd

etec

t

ed V

alu

e

(pC

i/L)

Dri

nki

ng

Wat

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CL

b

(pC

i/L)

Fre

qu

ency

of

Det

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>D

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kin

g

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ER2004-0072 A-41 May 2005

An

alyt

eS

cree

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(ft)

aC

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n

Dat

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Fie

ld

Pre

par

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n

Nu

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An

alys

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Nu

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f

Det

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Det

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d

Val

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(pC

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No

nd

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ted

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(pC

i/L)

Dri

nki

ng

Wat

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CL

b

(pC

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Fre

qu

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of

Det

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>D

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kin

g

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May 2005 A-42 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

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n

Nu

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f

An

alys

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Nu

mb

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f

Det

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Det

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d

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No

n-

det

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d

Val

ue

(pC

i/L)

Dri

nki

ng

Wat

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CL

b

(pC

i/L)

Fre

qu

ency

of

Det

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>D

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kin

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An

alyt

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Dep

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(ft)

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Dat

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Nu

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An

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Det

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(pC

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No

nd

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(pC

i/L)

Dri

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ng

Wat

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CL

b

(pC

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Fre

qu

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of

Det

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ER2004-0072 A-43 May 2005

An

alyt

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cree

n

Dep

th

(ft)

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Dat

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Fie

ld

Pre

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Nu

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f

Det

ects

Det

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No

nd

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(pC

i/L)

Dri

nki

ng

Wat

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CL

b

(pC

i/L)

Fre

qu

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of

Det

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>D

rin

kin

g

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CL


May 2005 A-44 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

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n

Nu

mb

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f

An

alys

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Nu

mb

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f

Det

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Det

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)

No

nd

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ted

Val

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(pC

i/L)

Dri

nki

ng

Wat

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CL

b

(pC

i/L)

Fre

qu

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of

Det

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>D

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kin

g

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CL


ER2004-0072 A-45 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

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Dat

e

Fie

ld

Pre

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n

Nu

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f

An

alys

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Nu

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f

Det

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Det

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d

Val

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(pC

i/L)

No

nd

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ted

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(pC

i/L)

Dri

nki

ng

Wat

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CL

b

(pC

i/L)

Fre

qu

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of

Det

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>D

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kin

g

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CL


May 2005 A-46 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

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n

Nu

mb

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f

An

alys

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Nu

mb

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f

Det

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Det

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d

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(pC

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No

n-

det

ecte

d

Val

ue

(pC

i/L)

Dri

nki

ng

Wat

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CL

b

(pC

i/L)

Fre

qu

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of

Det

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>D

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kin

g W

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An

alyt

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Dep

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Dat

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Nu

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Det

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No

net

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d

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Dri

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Wat

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CL

b

(pC

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Fre

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of

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>D

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kin

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ER2004-0072 A-47 May 2005

An

alyt

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cree

n

Dep

th

(ft)

aC

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Dat

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ld

Pre

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Nu

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Det

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No

nd

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(pC

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Dri

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Wat

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CL

b

(pC

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Fre

qu

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of

Det

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>D

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kin

g

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May 2005 A-48 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

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n

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alys

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Nu

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f

Det

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Det

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d

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(pC

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No

nd

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ted

Val

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(pC

i/L)

Dri

nki

ng

Wat

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CL

b

(pC

i/L)

Fre

qu

ency

of

Det

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>D

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kin

g

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CL


ER2004-0072 A-49 May 2005

An

alyt

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cree

n

Dep

th

(ft)

aC

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Dat

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ld

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Det

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(pC

i/L)

Dri

nki

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Wat

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CL

b

(pC

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Fre

qu

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of

Det

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>D

rin

kin

g

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May 2005 A-50 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

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n

Nu

mb

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An

alys

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Det

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No

nd

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(pC

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Dri

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ng

Wat

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CL

b

(pC

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Fre

qu

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of

Det

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>D

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ER2004-0072 A-51 May 2005

Ta

ble

A-2

5R

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ion

al

We

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-25

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n 1

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Re

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Su

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fo

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org

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Par

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Dat

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of

Det

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No

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d

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/L)

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nd

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ara

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d A

lkal

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CaC

O3)

175

505

/03/

01N

Fe1

178

000

—f

——

——

pH1

755

05/0

3/01

NF

11

6.98

—>6

& <

90/

1>6

& <

90/

1

Spe

cific

Con

duct

ance

(mS

/cm

)1

755

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3/01

NF

11

233

——

0/1

—0/

1

Tem

pera

ture

(°C

)1

755

05/0

3/01

NF

11

11.9

——

0/1

—0/

1

Turb

idity

(NTU

)g1

755

05/0

3/01

NF

11

4.1

——

0/1

—0/

1

An

aly

te

Lab

Alk

alin

ity(to

tal a

s C

aCO

3)1

755

05/0

3/01

Fg1

187

000

——

——

—

Alu

min

um1

755

05/0

3/01

F1

0—

[7.6

]50

0/1

5000

0/1

Alu

min

um1

755

05/0

3/01

NF

10

—[7

.6]

——

——

Am

mon

ia (a

s N

)1

755

05/0

3/01

F1

0—

[500

]—

——

—

Ant

imon

y1

755

05/0

3/01

F1

10.

363

—6

0/1

——

Ant

imon

y1

755

05/0

3/01

NF

11

0.49

1—

——

——

Ars

enic

175

505

/03/

01F

10

—[1

.5]

500/

110

00/

1

Ars

enic

175

505

/03/

01N

F1

11.

6—

——

——

Bar

ium

175

505

/03/

01F

11

7.2

—20

000/

110

000/

1

Bar

ium

175

505

/03/

01N

F1

18.

7—

——

——

Ber

ylliu

m1

755

05/0

3/01

F1

10.

025

—4

0/1

——

Ber

ylliu

m1

755

05/0

3/01

NF

11

0.05

7—

——

——

Bor

on1

755

05/0

3/01

F1

127

0—

——

750

0/1

Bor

on1

755

05/0

3/01

NF

11

290

——

——

—

Bro

mid

e1

755

05/0

3/01

F1

0—

[200

]—

——

—

Cad

miu

m1

755

05/0

3/01

F1

0—

[0.0

66]

50/

110

0/1

Cad

miu

m1

755

05/0

3/01

NF

10

—[0

.066

]—

——

—

Cal

cium

175

505

/03/

01F

11

2600

0—

——

——

Cal

cium

175

505

/03/

01N

F1

128

000

——

——

—


May 2005 A-52 ER2004-0072

Ta

ble

A-2

5 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

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mb

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of

Det

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Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

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nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

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nd

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d

(mg

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qu

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Chl

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755

05/0

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112

000

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0000

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2500

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1

Chr

omiu

m (t

otal

)1

755

05/0

3/01

F1

10.

82—

100

0/1

500/

1

Chr

omiu

m (t

otal

)1

755

05/0

3/01

NF

11

19—

——

——

Cob

alt

175

505

/03/

01F

11

1.7

——

—50

0/1

Cob

alt

175

505

/03/

01N

F1

12.

6—

——

——

Cop

per

175

505

/03/

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10

—[0

.27]

1300

0/1

1000

0/1

Cop

per

175

505

/03/

01N

F1

10.

41—

——

——

Cya

nide

(tot

al)

175

505

/03/

01N

F1

0—

[10]

——

——

Fluo

ride

175

505

/03/

01F

11

220

—40

000/

116

000/

1

Iron

175

505

/03/

01F

10

—[4

7]30

00/

110

000/

1

Iron

175

505

/03/

01N

F1

189

0—

——

——

Lead

175

505

/03/

01F

10

—[0

.037

]15

0/1

500/

1

Lead

175

505

/03/

01N

F1

0—

[0.0

37]

——

——

Mag

nesi

um1

755

05/0

3/01

F1

156

00—

——

——

Mag

nesi

um1

755

05/0

3/01

NF

11

5400

——

——

—

Man

gane

se1

755

05/0

3/01

F1

143

—50

0/1

200

0/1

Man

gane

se1

755

05/0

3/01

NF

11

54—

——

——

Mer

cury

175

505

/03/

01F

10

—[0

.033

]2

0/1

——

Mer

cury

175

505

/03/

01N

F1

0—

[0.0

33]

——

20/

1

Mol

ybde

num

175

505

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01F

10

—[3

.8]

——

——

Mol

ybde

num

175

505

/03/

01N

F1

0—

[3.8

]—

——

—

Nic

kel

175

505

/03/

01F

11

170

—10

01/

120

00/

1

Nic

kel

175

505

/03/

01N

F1

122

0—

——

——

Nitr

ate

+ N

itrite

(as

N)

175

505

/03/

01F

11

990

—10

000

0/1

——

Per

chlo

rate

175

505

/03/

01F

10

—[2

.37]

——

——

Pho

spho

rus

(tota

l)1

755

05/0

3/01

F1

113

0—

——

——

Pot

assi

um1

755

05/0

3/01

F1

114

00—

——

——

Pot

assi

um1

755

05/0

3/01

NF

11

1400

——

——

—

Sel

eniu

m1

755

05/0

3/01

F1

0—

[1.9

]50

0/1

500/

1

Sel

eniu

m1

755

05/0

3/01

NF

10

—[1

.9]

——

——


ER2004-0072 A-53 May 2005

Ta

ble

A-2

5 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

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llect

ion

Dat

e

Fie

ld

Pre

par

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n

Nu

mb

er

of

An

alys

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mb

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of

Det

ects

Det

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d

Val

ue

(mg

/L)

No

n-

det

ecte

d

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ue

(mg

/L)

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nki

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er

MC

Lb

(mg

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Fre

qu

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of

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kin

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c

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(mg

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qu

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SiO

21

755

05/0

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151

360

——

——

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SiO

21

755

05/0

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NF

11

4922

0—

——

——

Silv

er1

755

05/0

3/01

F1

0—

[0.5

7]10

00/

150

0/1

Silv

er1

755

05/0

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NF

10

—[0

.57]

——

——

Sod

ium

175

505

/03/

01F

11

9400

——

——

—

Sod

ium

175

505

/03/

01N

F1

195

00—

——

——

Stro

ntiu

m1

755

05/0

3/01

F1

113

0—

——

——

Stro

ntiu

m1

755

05/0

3/01

NF

11

130

——

——

—

Sul

fate

175

505

/03/

01F

11

1200

0—

2500

000/

160

0000

0/1

Thal

lium

175

505

/03/

01F

11

0.22

—2

0/1

——

Thal

lium

175

505

/03/

01N

F1

10.

15—

——

——

Ura

nium

175

505

/03/

01F

11

1.43

—20

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5000

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Ura

nium

175

505

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F1

11.

59—

——

——

Van

adiu

m1

755

05/0

3/01

F1

15.

2—

——

——

Van

adiu

m1

755

05/0

3/01

NF

11

7.4

——

——

—

Zinc

175

505

/03/

01F

11

4.9

—50

000/

110

000

0/1

Zinc

175

505

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F1

13.

3—

——

——

Stab

le Is

otop

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)

d D

/H1

755

05/0

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NF

11

-82

d O

18/O

161

755

05/0

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NF

11

-11.

8


May 2005 A-54 ER2004-0072

Ta

ble

A-2

6R

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We

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nd

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ata

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org

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mic

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Par

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alas

CaC

O3)

289

205

/04/

01N

Fe1

113

0000

—f

——

——

pH2

892

05/0

4/01

NF

11

9.09

—>6

& <

90/

1>6

& <

90/

1

Spe

cific

Con

duct

ance

(mS

/cm

)2

892

05/0

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NF

11

458

——

0/1

—0/

1

Tem

pera

ture

(°C

)2

892

05/0

4/01

NF

11

9.4

——

0/1

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1

Turb

idity

(NTU

)g2

892

05/0

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NF

11

13.0

——

0/1

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1

An

aly

te

Lab

Alk

alin

ity (t

otal

as C

aCO

3)2

892

05/0

4/01

Fg1

119

0000

——

——

—

Alu

min

um2

892

05/0

4/01

F1

163

0—

501/

150

000/

1

Alu

min

um2

892

05/0

4/01

NF

11

1400

——

——

—

Am

mon

ia (a

s N

)2

892

05/0

4/01

F1

0—

[500

]—

——

—

Ant

imon

y2

892

05/0

4/01

F1

10.

632

—6

0/1

——

Ant

imon

y2

892

05/0

4/01

NF

11

0.4

——

——

—

Ars

enic

289

205

/04/

01F

11

2.5

—50

0/1

100

0/1

Ars

enic

289

205

/04/

01N

F1

12.

2—

——

——

Bar

ium

289

205

/04/

01F

10

—[3

]20

000/

110

000/

1

Bar

ium

289

205

/04/

01N

F1

14.

6—

——

——

Ber

ylliu

m2

892

05/0

4/01

F1

10.

068

—4

0/1

——

Ber

ylliu

m2

892

05/0

4/01

NF

11

0.22

7—

——

——

Bor

on2

892

05/0

4/01

F1

164

0—

——

750

0/1

Bor

on2

892

05/0

4/01

NF

11

590

——

——

—

Bro

mid

e2

892

05/0

4/01

F1

0—

[200

]—

——

—

Cad

miu

m2

892

05/0

4/01

F1

10.

078

—5

0/1

100/

1

Cad

miu

m2

892

05/0

4/01

NF

11

0.07

5—

——

——

Cal

cium

289

205

/04/

01F

11

6600

——

——

—

Cal

cium

289

205

/04/

01N

F1

171

00—

——

——


ER2004-0072 A-55 May 2005

Ta

ble

A-2

6 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

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n

Nu

mb

er

of

An

alys

es

Nu

mb

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of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

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nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

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>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

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nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>�N

ME

D

Gro

un

dw

ater

Sta

nd

ard

Chl

orid

e2

892

05/0

4/01

F1

111

000

—25

0000

0/1

2500

000/

1

Chr

omiu

m (t

otal

)2

892

05/0

4/01

F1

11.

5—

100

0/1

500/

1

Chr

omiu

m (t

otal

)2

892

05/0

4/01

NF

11

6.7

——

——

—

Cob

alt

289

205

/04/

01F

10

—[0

.37]

——

500/

1

Cob

alt

289

205

/04/

01N

F1

10.

79—

——

——

Cop

per

289

205

/04/

01F

11

11—

1300

0/1

1000

0/1

Cop

per

289

205

/04/

01N

F1

116

——

——

—

Cya

nide

(tot

al)

289

205

/04/

01N

F1

0—

[10]

——

——

Fluo

ride

289

205

/04/

01F

11

190

—40

000/

116

000/

1

Iron

289

205

/04/

01F

11

310

—30

01/

110

000/

1

Iron

289

205

/04/

01N

F1

173

0—

——

——

Lead

289

205

/04/

01F

11

1.82

—15

0/1

500/

1

Lead

289

205

/04/

01N

F1

13.

41—

——

——

Mag

nesi

um2

892

05/0

4/01

F1

112

00—

——

——

Mag

nesi

um2

892

05/0

4/01

NF

11

1600

——

——

—

Man

gane

se2

892

05/0

4/01

F1

19.

1—

500/

120

00/

1

Man

gane

se2

892

05/0

4/01

NF

11

28—

——

——

Mer

cury

289

205

/04/

01F

10

—[0

.033

]2

0/1

——

Mer

cury

289

205

/04/

01N

F1

0—

[0.0

33]

——

20/

1

Mol

ybde

num

289

205

/04/

01F

11

13—

——

——

Mol

ybde

num

289

205

/04/

01N

F1

119

——

——

—

Nic

kel

289

205

/04/

01F

11

4.5

—10

00/

120

00/

1

Nic

kel

289

205

/04/

01N

F1

15.

9—

——

——

Nitr

ate

+ N

itrite

(as

N)

289

205

/04/

01F

10

—[1

00]

1000

00/

1—

—

Oxa

late

289

205

/04/

01F

10

—[1

90]

——

——

Per

chlo

rate

289

205

/04/

01F

10

—[1

.85]

——

——

Pho

spho

rus

(tota

l)2

892

05/0

4/01

F1

119

000

——

——

—

Pot

assi

um2

892

05/0

4/01

F1

135

00—

——

——

Pot

assi

um2

892

05/0

4/01

NF

11

3600

——

——

—

Sel

eniu

m2

892

05/0

4/01

F1

0—

[1.9

]50

0/1

500/

1

Sel

eniu

m2

892

05/0

4/01

NF

10

—[1

.9]

——

——

SiO

22

892

05/0

4/01

F1

136

380

——

——

—


May 2005 A-56 ER2004-0072

Ta

ble

A-2

6 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>�N

ME

D

Gro

un

dw

ater

Sta

nd

ard

SiO

22

892

05/0

4/01

NF

11

4066

0—

——

——

Silv

er2

892

05/0

4/01

F1

0—

[0.5

7]10

00/

150

0/1

Silv

er2

892

05/0

4/01

NF

10

—[0

.57]

——

——

Sod

ium

289

205

/04/

01F

11

7700

0—

——

——

Sod

ium

289

205

/04/

01N

F1

179

000

——

——

—

Stro

ntiu

m2

892

05/0

4/01

F1

129

——

——

—

Stro

ntiu

m2

892

05/0

4/01

NF

11

36—

——

——

Sul

fate

289

205

/04/

01F

11

1500

0—

2500

000/

160

0000

0/1

Thal

lium

289

205

/04/

01F

10

—[0

.077

]2

0/1

——

Thal

lium

289

205

/04/

01N

F1

0—

[0.0

77]

——

——

Ura

nium

289

205

/04/

01F

11

1.05

—20

0/1

5000

0/1

Ura

nium

289

205

/04/

01N

F1

11.

54—

——

——

Van

adiu

m2

892

05/0

4/01

F1

12.

4—

——

——

Van

adiu

m2

892

05/0

4/01

NF

11

5—

——

——

Zinc

289

205

/04/

01F

11

8.9

—50

000/

110

000

0/1

Zinc

289

205

/04/

01N

F1

18.

8—

——

——

Stab

le Is

otop

e (‰

)

d D

/H2

892

05/0

4/01

NF

11

-83

d O

18/O

162

892

05/0

4/01

NF

11

-11.

8

m


ER2004-0072 A-57 May 2005

Ta

ble

A-2

7R

eg

ion

al

We

ll R

-25

Sc

ree

n 4

Se

co

nd

Ro

un

d S

am

ple

Re

su

lts

: D

ata

Su

mm

ary

fo

r In

org

an

ic C

he

mic

als

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>�N

ME

D

Gro

un

dw

ater

Sta

nd

ard

Fie

ld P

ara

mete

r

Fiel

d A

lkal

inity

(tota

l as

CaC

O3)

411

9205

/07/

01N

Fe1

178

000

—f

——

——

pH4

1192

05/0

7/01

NF

11

7.31

—>6

& <

90/

1>6

&<9

0/1

Spe

cific

Con

duct

ance

(mS

/cm

)4

1192

05/0

7/01

NF

11

457

——

0/1

—0/

1

Tem

pera

ture

(°C

)4

1192

05/0

7/01

NF

11

17.3

——

0/1

—0/

1

Turb

idity

(NTU

)g4

1192

05/0

7/01

NF

11

31.7

——

0/1

—0/

1

An

aly

te

Lab

Alk

alin

ity(to

tal a

s C

aCO

3)4

1192

05/0

7/01

F g1

167

000

——

——

—

Alu

min

um4

1192

05/0

7/01

F1

0—

[7.6

]50

0/1

5000

0/1

Alu

min

um4

1192

05/0

7/01

NF

11

32—

——

——

Am

mon

ia (a

s N

)4

1192

05/0

7/01

F1

0—

[500

]—

——

—

Ant

imon

y4

1192

05/0

7/01

F1

10.

182

—6

0/1

——

Ant

imon

y4

1192

05/0

7/01

NF

10

—[0

.153

]—

——

—

Ars

enic

411

9205

/07/

01F

10

—[1

.5]

500/

110

00/

1

Ars

enic

411

9205

/07/

01N

F1

0—

[1.5

]—

——

—

Bar

ium

411

9205

/07/

01F

11

18—

2000

0/1

1000

0/1

Bar

ium

411

9205

/07/

01N

F1

129

——

——

—

Ber

ylliu

m4

1192

05/0

7/01

F1

10.

074

—4

1/1

——

Ber

ylliu

m4

1192

05/0

7/01

NF

11

10.1

——

——

—

Bor

on4

1192

05/0

7/01

F1

125

——

—75

00/

1

Bor

on4

1192

05/0

7/01

NF

11

25—

——

——

Bro

mid

e4

1192

05/0

7/01

F1

0—

[200

]—

——

—

Cad

miu

m4

1192

05/0

7/01

F1

11.

28—

50/

110

0/1

Cad

miu

m4

1192

05/0

7/01

NF

10

—[0

.066

]—

——

—

Cal

cium

411

9205

/07/

01F

11

7300

0—

——

——

Cal

cium

411

9205

/07/

01N

F1

114

0000

——

——

—

Chl

orid

e4

1192

05/0

7/01

F1

154

00—

2500

000/

125

0000

0/1


May 2005 A-58 ER2004-0072

Ta

ble

A-2

7 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>�N

ME

D

Gro

un

dw

ater

Sta

nd

ard

Chr

omiu

m (t

otal

)4

1192

05/0

7/01

F1

10.

24—

100

0/1

500/

1

Chr

omiu

m (t

otal

)4

1192

05/0

7/01

NF

11

5.2

——

——

—

Cob

alt

411

9205

/07/

01F

10

—[0

.37]

——

500/

1

Cob

alt

411

9205

/07/

01N

F1

10.

52—

——

——

Cop

per

411

9205

/07/

01F

10

—[0

.27]

1300

0/1

1000

0/1

Cop

per

411

9205

/07/

01N

F1

11.

3—

——

——

Cya

nide

(tot

al)

411

9205

/07/

01N

F1

0—

[10]

——

——

Fluo

ride

411

9205

/07/

01F

11

120

—40

000/

116

000/

1

Iron

411

9205

/07/

01F

10

—[3

4]30

00/

110

000/

1

Iron

411

9205

/07/

01N

F1

0—

[180

]—

——

—

Lead

411

9205

/07/

01F

11

0.50

4—

150/

150

0/1

Lead

411

9205

/07/

01N

F1

11.

25—

——

——

Mag

nesi

um4

1192

05/0

7/01

F1

143

00—

——

——

Mag

nesi

um4

1192

05/0

7/01

NF

11

5000

——

——

—

Man

gane

se4

1192

05/0

7/01

F1

125

—50

0/1

200

0/1

Man

gane

se4

1192

05/0

7/01

NF

11

73—

——

——

Mer

cury

411

9205

/07/

01F

10

—[0

.033

]2

0/1

——

Mer

cury

411

9205

/07/

01N

F1

0—

[0.0

33]

——

20/

1

Mol

ybde

num

411

9205

/07/

01F

10

—[3

.8]

——

——

Mol

ybde

num

411

9205

/07/

01N

F1

0—

[3.8

]—

——

—

Nic

kel

411

9205

/07/

01F

10

—[0

.3]

100

0/1

200

0/1

Nic

kel

411

9205

/07/

01N

F1

0—

[0.3

]—

——

—

Nitr

ate

+ N

itrite

(as

N)

411

9205

/07/

01F

11

730

—10

000

0/1

——

Per

chlo

rate

411

9205

/07/

01F

10

—[3

.4]

——

——

Pho

spho

rus

(tota

l)4

1192

05/0

7/01

F1

114

0—

——

——

Pot

assi

um4

1192

05/0

7/01

F1

179

0—

——

——

Pot

assi

um4

1192

05/0

7/01

NF

11

960

——

——

—

Sel

eniu

m4

1192

05/0

7/01

F1

0—

[1.9

]50

0/1

500/

1

Sel

eniu

m4

1192

05/0

7/01

NF

10

—[1

.9]

——

——

SiO

24

1192

05/0

7/01

F1

155

640

——

——

—

SiO

24

1192

05/0

7/01

NF

11

5564

0—

——

——

Silv

er4

1192

05/0

7/01

F1

0—

[0.5

7]10

00/

150

0/1


ER2004-0072 A-59 May 2005

Ta

ble

A-2

7 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>�N

ME

D

Gro

un

dw

ater

Sta

nd

ard

Silv

er4

1192

05/0

7/01

NF

10

—[0

.57]

——

——

Sod

ium

411

9205

/07/

01F

11

8300

——

——

—

Sod

ium

411

9205

/07/

01N

F1

191

00—

——

——

Stro

ntiu

m4

1192

05/0

7/01

F1

132

0—

——

——

Stro

ntiu

m4

1192

05/0

7/01

NF

11

590

——

——

—

Sul

fate

411

9205

/07/

01F

11

1300

00—

2500

000/

160

0000

0/1

Thal

lium

411

9205

/07/

01F

10

—[0

.077

]2

0/1

——

Thal

lium

411

9205

/07/

01N

F1

0—

[0.0

77]

——

——

Ura

nium

411

9205

/07/

01F

11

0.89

4—

200/

150

000/

1

Ura

nium

411

9205

/07/

01N

F1

114

.5—

——

——

Van

adiu

m4

1192

05/0

7/01

F1

10.

56—

——

——

Van

adiu

m4

1192

05/0

7/01

NF

11

0.56

——

——

—

Zinc

411

9205

/07/

01F

11

3.7

—50

000/

110

000

0/1

Zinc

411

9205

/07/

01N

F1

114

——

——

—

Stab

le Is

otop

e (‰

)

d D

/H4

1192

05/0

7/01

NF

11

-84

d O

18/O

164

1192

05/0

7/01

NF

11

-12

m


May 2005 A-60 ER2004-0072

Ta

ble

A-2

8R

eg

ion

al

We

ll R

-25

Sc

ree

n 5

Se

co

nd

Ro

un

d S

am

ple

Re

su

lts

: D

ata

Su

mm

ary

fo

r In

org

an

ic C

he

mic

als

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>�N

ME

D

Gro

un

dw

ater

Sta

nd

ard

Fie

ld P

ara

mete

r

Fiel

d A

lkal

inity

(tota

l as

CaC

O3)

513

0305

/08/

01N

Fe1

190

000

—f

——

——

pH5

1303

05/0

8/01

NF

11

7.54

—>6

& <

90/

1>6

& <

90/

1

Spe

cific

Con

duct

ance

(mS

/cm

)5

1303

05/0

8/01

NF

11

213

——

0/1

—0/

1

Tem

pera

ture

(°C

)5

1303

05/0

8/01

NF

11

15.4

——

0/1

—0/

1

Turb

idity

(NTU

)g5

1303

05/0

8/01

NF

11

3.2

——

0/1

—0/

1

An

aly

te

Lab

Alk

alin

ity(to

tal a

s C

aCO

3)5

1303

05/0

8/01

Fg1

198

000

——

——

—

Alu

min

um5

1303

05/0

8/01

F1

0—

[7.6

]50

0/1

5000

0/1

Alu

min

um5

1303

05/0

8/01

NF

10

—[7

.6]

——

——

Am

mon

ia (a

s N

)5

1303

05/0

8/01

F1

0—

[500

]—

——

—

Ant

imon

y5

1303

05/0

8/01

F1

0—

[0.1

53]

60/

1—

—

Ant

imon

y5

1303

05/0

8/01

NF

10

—[0

.153

]—

——

—

Ars

enic

513

0305

/08/

01F

11

2—

500/

110

00/

1

Ars

enic

513

0305

/08/

01N

F1

11.

9—

——

——

Bar

ium

513

0305

/08/

01F

11

15—

2000

0/1

1000

0/1

Bar

ium

513

0305

/08/

01N

F1

112

——

——

—

Ber

ylliu

m5

1303

05/0

8/01

F1

10.

02—

40/

1—

—

Ber

ylliu

m5

1303

05/0

8/01

NF

11

0.01

6—

——

——

Bor

on5

1303

05/0

8/01

F1

111

0—

——

750

0/1

Bor

on5

1303

05/0

8/01

NF

11

120

——

——

—

Bro

mid

e5

1303

05/0

8/01

F1

0—

[200

]—

——

—

Cad

miu

m5

1303

05/0

8/01

F1

0—

[0.0

66]

50/

110

0/1

Cad

miu

m5

1303

05/0

8/01

NF

10

—[0

.066

]—

——

—

Cal

cium

513

0305

/08/

01F

11

2000

0—

——

——

Cal

cium

513

0305

/08/

01N

F1

120

000

——

——

—


ER2004-0072 A-61 May 2005

Ta

ble

A-2

8 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(mg

/L)

Fre

qu

ency

of

Det

ects

>�N

ME

D

Gro

un

dw

ater

Sta

nd

ard

Chl

orid

e5

1303

05/0

8/01

F1

132

00—

2500

000/

125

0000

0/1

Chr

omiu

m (t

otal

)5

1303

05/0

8/01

F1

10.

77—

100

0/1

500/

1

Chr

omiu

m (t

otal

)5

1303

05/0

8/01

NF

11

6.6

——

——

—

Cob

alt

513

0305

/08/

01F

11

0.67

——

—50

0/1

Cob

alt

513

0305

/08/

01N

F1

0—

[0.3

7]—

——

—

Cop

per

513

0305

/08/

01F

11

0.43

—13

000/

110

000/

1

Cop

per

513

0305

/08/

01N

F1

10.

77—

——

——

Cya

nide

(tot

al)

513

0305

/08/

01N

F1

0—

[10]

——

——

Fluo

ride

513

0305

/08/

01F

11

130

—40

000/

116

000/

1

Iron

513

0305

/08/

01F

10

—[4

7]30

00/

110

000/

1

Iron

513

0305

/08/

01N

F1

0—

[110

]—

——

—

Lead

513

0305

/08/

01F

10

—[0

.037

]15

0/1

500/

1

Lead

513

0305

/08/

01N

F1

0—

[0.0

37]

——

——

Mag

nesi

um5

1303

05/0

8/01

F1

145

00—

——

——

Mag

nesi

um5

1303

05/0

8/01

NF

11

4500

——

——

—

Man

gane

se5

1303

05/0

8/01

F1

127

0—

501/

120

01/

1

Man

gane

se5

1303

05/0

8/01

NF

11

290

——

——

—

Mer

cury

513

0305

/08/

01F

10

—[0

.033

]2

0/1

——

Mer

cury

513

0305

/08/

01N

F1

0—

[0.0

33]

——

20/

1

Mol

ybde

num

513

0305

/08/

01F

11

7.8

——

——

—

Mol

ybde

num

513

0305

/08/

01N

F1

110

——

——

—

Nic

kel

513

0305

/08/

01F

10

—[0

.3]

100

0/1

200

0/1

Nic

kel

513

0305

/08/

01N

F1

0—

[0.3

]—

——

—

Nitr

ate

+ N

itrite

(as

N)

513

0305

/08/

01F

11

140

—10

000

0/1

——

Per

chlo

rate

513

0305

/08/

01F

10

—[1

.93]

——

——

Pho

spho

rus

(tota

l)5

1303

05/0

8/01

F1

132

00—

——

——

Pot

assi

um5

1303

05/0

8/01

F1

113

00—

——

——

Pot

assi

um5

1303

05/0

8/01

NF

11

1200

——

——

—

Sel

eniu

m5

1303

05/0

8/01

F1

0—

[1.9

]50

0/1

500/

1

Sel

eniu

m5

1303

05/0

8/01

NF

10

—[1

.9]

——

——

SiO

25

1303

05/0

8/01

F1

155

640

——

——

—


May 2005 A-62 ER2004-0072

Ta

ble

A-2

8 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

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er M

CL

NM

ED

c

Gro

un

dw

ater

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nd

ard

d

(mg

/L)

Fre

qu

ency

of

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ects

>�N

ME

D

Gro

un

dw

ater

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nd

ard

SiO

25

1303

05/0

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NF

11

5564

0—

——

——

Silv

er5

1303

05/0

8/01

F1

0—

[0.5

7]10

00/

150

0/1

Silv

er5

1303

05/0

8/01

NF

10

—[0

.57]

——

——

Sod

ium

513

0305

/08/

01F

11

1600

0—

——

——

Sod

ium

513

0305

/08/

01N

F1

116

000

——

——

—

Stro

ntiu

m5

1303

05/0

8/01

F1

115

0—

——

——

Stro

ntiu

m5

1303

05/0

8/01

NF

11

150

——

——

—

Sul

fate

513

0305

/08/

01F

11

8900

—25

0000

0/1

6000

000/

1

Thal

lium

513

0305

/08/

01F

10

—[0

.077

]2

0/1

——

Thal

lium

513

0305

/08/

01N

F1

10.

171

——

——

—

Ura

nium

513

0305

/08/

01F

11

1.24

—20

0/1

5000

0/1

Ura

nium

513

0305

/08/

01N

F1

11.

25—

——

——

Van

adiu

m5

1303

05/0

8/01

F1

11.

5—

——

——

Van

adiu

m5

1303

05/0

8/01

NF

11

0.47

——

——

—

Zinc

513

0305

/08/

01F

11

5.8

—50

000/

110

000

0/1

Zinc

513

0305

/08/

01N

F1

19.

4—

——

——

Stab

le Is

otop

e (‰

)

d D

/H5

1303

05/0

8/01

NF

11

-80

d O

18/O

165

1303

05/0

8/01

NF

11

-12

m


ER2004-0072 A-63 May 2005

Ta

ble

A-2

9R

eg

ion

al

We

ll R

-25

Sc

ree

n 6

Se

co

nd

Ro

un

d S

am

ple

Re

su

lts

: D

ata

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mm

ary

fo

r In

org

an

ic C

he

mic

als

Par

amet

er

and

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alyt

eS

cree

n

Dep

th

(ft)

a

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llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

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nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

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of

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rin

kin

g

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CL

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c

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(mg

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qu

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of

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D

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dw

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Fie

ld P

ara

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d A

lkal

inity

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l as

CaC

O3)

614

0605

/09/

01N

Fe1

179

000

—f

——

——

pH6

1406

05/0

9/01

NF

11

7.20

—>6

& <

90/

1>6

& <

90/

1

Spe

cific

Con

duct

ance

(mS

/cm

)6

1406

05/0

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NF

11

204

——

0/1

—0/

1

Tem

pera

ture

(°C

)6

1406

05/0

9/01

NF

11

16.2

——

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1

Turb

idity

(NTU

)g6

1406

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9/01

NF

11

0.3

——

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1

An

aly

te

Lab

Alk

alin

ity(to

tal a

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aCO

3)6

1406

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Fg1

188

000

——

——

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Alu

min

um6

1406

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9/01

F1

0—

[7.6

]50

0/1

5000

0/1

Alu

min

um6

1406

05/0

9/01

NF

10

—[7

.6]

——

——

Am

mon

ia (a

s N

)6

1406

05/0

9/01

F1

0—

[500

]—

——

—

Ant

imon

y6

1406

05/0

9/01

F1

10.

212

—6

0/1

——

Ant

imon

y6

1406

05/0

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NF

11

0.21

6—

——

——

Ars

enic

614

0605

/09/

01F

11

1.6

—50

0/1

100

0/1

Ars

enic

614

0605

/09/

01N

F1

0—

[1.5

]—

——

—

Bar

ium

614

0605

/09/

01F

11

14—

2000

0/1

1000

0/1

Bar

ium

614

0605

/09/

01N

F1

114

——

——

—

Ber

ylliu

m6

1406

05/0

9/01

F1

0—

[0.0

12]

40/

1—

—

Ber

ylliu

m6

1406

05/0

9/01

NF

10

—[0

.012

]—

——

—

Bor

on6

1406

05/0

9/01

F1

187

——

—75

00/

1

Bor

on6

1406

05/0

9/01

NF

11

80—

——

——

Bro

mid

e6

1406

05/0

9/01

F1

0—

[200

]—

——

—

Cad

miu

m6

1406

05/0

9/01

F1

0—

[0.0

66]

50/

110

0/1

Cad

miu

m6

1406

05/0

9/01

NF

10

—[0

.066

]—

——

—

Cal

cium

614

0605

/09/

01F

11

2100

0—

——

——

Cal

cium

614

0605

/09/

01N

F1

121

000

——

——

—


May 2005 A-64 ER2004-0072

Ta

ble

A-2

9 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

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ue

(mg

/L)

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nki

ng

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er

MC

Lb

(mg

/L)

Fre

qu

ency

of

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>�D

rin

kin

g

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er M

CL

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ED

c

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un

dw

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nd

ard

d

(mg

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qu

ency

of

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ME

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un

dw

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nd

ard

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orid

e6

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128

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2500

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125

0000

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Chr

omiu

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otal

)6

1406

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F1

10.

45—

100

0/1

500/

1

Chr

omiu

m (t

otal

)6

1406

05/0

9/01

NF

11

3.6

——

——

—

Cob

alt

614

0605

/09/

01F

10

—[0

.37]

——

500/

1

Cob

alt

614

0605

/09/

01N

F1

0—

[0.3

7]—

——

—

Cop

per

614

0605

/09/

01F

10

—[0

.27]

1300

0/1

1000

0/1

Cop

per

614

0605

/09/

01N

F1

10.

62—

——

——

Cya

nide

(tot

al)

614

0605

/09/

01N

F1

0—

[10]

——

——

Fluo

ride

614

0605

/09/

01F

11

110

—40

000/

116

000/

1

Iron

614

0605

/09/

01F

10

—[6

1]30

00/

110

000/

1

Iron

614

0605

/09/

01N

F1

0—

[99]

——

——

Lead

614

0605

/09/

01F

10

—[0

.037

]15

0/1

500/

1

Lead

614

0605

/09/

01N

F1

0—

[0.0

37]

——

——

Mag

nesi

um6

1406

05/0

9/01

F1

139

00—

——

——

Mag

nesi

um6

1406

05/0

9/01

NF

11

3900

——

——

—

Man

gane

se6

1406

05/0

9/01

F1

114

—50

0/1

200

0/1

Man

gane

se6

1406

05/0

9/01

NF

11

15—

——

——

Mer

cury

614

0605

/09/

01F

10

—[0

.033

]2

0/1

——

Mer

cury

614

0605

/09/

01N

F1

0—

[0.0

33]

——

20/

1

Mol

ybde

num

614

0605

/09/

01F

10

—[3

.8]

——

——

Mol

ybde

num

614

0605

/09/

01N

F1

0—

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]—

——

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Nic

kel

614

0605

/09/

01F

11

1.3

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00/

120

00/

1

Nic

kel

614

0605

/09/

01N

F1

13

——

——

—

Nitr

ate

+ N

itrite

(as

N)

614

0605

/09/

01F

11

360

—10

000

0/1

——

Per

chlo

rate

614

0605

/09/

01F

10

—[2

.62]

——

——

Pho

spho

rus

(tota

l)6

1406

05/0

9/01

F1

169

00—

——

——

Pot

assi

um6

1406

05/0

9/01

F1

113

00—

——

——

Pot

assi

um6

1406

05/0

9/01

NF

11

1300

——

——

—

Sel

eniu

m6

1406

05/0

9/01

F1

0—

[1.9

]50

0/1

500/

1

Sel

eniu

m6

1406

05/0

9/01

NF

10

—[1

.9]

——

——

SiO

26

1406

05/0

9/01

F1

155

640

——

——

—


ER2004-0072 A-65 May 2005

Ta

ble

A-2

9 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

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ue

(mg

/L)

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nki

ng

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er

MC

Lb

(mg

/L)

Fre

qu

ency

of

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>�D

rin

kin

g

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er M

CL

NM

ED

c

Gro

un

dw

ater

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nd

ard

d

(mg

/L)

Fre

qu

ency

of

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ects

>�N

ME

D

Gro

un

dw

ater

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nd

ard

SiO

26

1406

05/0

9/01

NF

11

5564

0—

——

——

Silv

er6

1406

05/0

9/01

F1

0—

[0.5

7]10

00/

150

0/1

Silv

er6

1406

05/0

9/01

NF

10

—[0

.57]

——

——

Sod

ium

614

0605

/09/

01F

11

1400

0—

——

——

Sod

ium

614

0605

/09/

01N

F1

113

000

——

——

—

Stro

ntiu

m6

1406

05/0

9/01

F1

116

0—

——

——

Stro

ntiu

m6

1406

05/0

9/01

NF

11

150

——

——

—

Sul

fate

614

0605

/09/

01F

11

6500

—25

0000

0/1

6000

000/

1

Thal

lium

614

0605

/09/

01F

11

0.21

1—

20/

1—

—

Thal

lium

614

0605

/09/

01N

F1

10.

273

——

——

—

Ura

nium

614

0605

/09/

01F

11

0.76

9—

200/

150

000/

1

Ura

nium

614

0605

/09/

01N

F1

10.

779

——

——

—

Van

adiu

m6

1406

05/0

9/01

F1

13.

6—

——

——

Van

adiu

m6

1406

05/0

9/01

NF

11

3.4

——

——

—

Zinc

614

0605

/09/

01F

10

—[5

.2]

5000

0/1

1000

00/

1

Zinc

614

0605

/09/

01N

F1

0—

[5.2

]—

——

—

Stab

le Is

otop

e (‰

)

d D

/H6

1406

05/0

9/01

NF

11

-83

——

——

—

d O

18/O

166

1406

05/0

9/01

NF

11

-12

——

——

—

m


May 2005 A-66 ER2004-0072

Ta

ble

A-3

0R

eg

ion

al

We

ll R

-25

Sc

ree

n 7

Se

co

nd

Ro

un

d S

am

ple

Re

su

lts

: D

ata

Su

mm

ary

fo

r In

org

an

ic C

he

mic

als

Par

amet

eran

dA

nal

yte

Scr

een

Dep

th(f

t)a

Co

llect

ion

Dat

eF

ield

Pre

par

atio

n

Nu

mb

ero

fA

nal

yses

Nu

mb

ero

fD

etec

ts

Det

ecte

dV

alu

e

(mg

/L)

No

n-

det

ecte

dV

alu

e

(mg

/L)

Dri

nki

ng

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erM

CL

b

(mg

/L)

Fre

qu

ency

of

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ects

>�D

rin

kin

gW

ater

MC

L

NM

ED

c

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un

dw

ater

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nd

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d

(mg

/L)

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qu

ency

of

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ects

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DG

rou

nd

wat

erS

tan

dar

d

Fie

ld P

ara

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r

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d A

lkal

inity

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l as

CaC

O3)

716

0505

/14/

01N

Fe1

148

000

—f

——

——

pH7

1605

05/1

4/01

NF

11

7.20

—>6

& <

90/

1>6

& <

90/

1

Spe

cific

Con

duct

ance

(mS

/cm

)7

1605

05/1

4/01

NF

11

135

——

0/1

—0/

1

Tem

pera

ture

(°C

)7

1605

05/1

4/01

NF

11

15.8

——

0/1

—0/

1

Turb

idity

(NTU

)g7

1605

05/1

4/01

NF

11

3.4

——

0/1

—0/

1

An

aly

te

Lab

Alk

alin

ity(to

tal a

s C

aCO

3)7

1605

05/1

4/01

Fg1

166

000

——

——

—

Alu

min

um7

1605

05/1

4/01

F1

0—

[7.6

]50

0/1

5000

0/1

Alu

min

um7

1605

05/1

4/01

NF

11

31—

——

——

Am

mon

ia (a

s N

)7

1605

05/1

4/01

F1

0—

[500

]—

——

—

Ant

imon

y7

1605

05/1

4/01

F1

10.

315

—6

0/1

——

Ant

imon

y7

1605

05/1

4/01

NF

11

0.22

8—

——

——

Ars

enic

716

0505

/14/

01F

10

—[1

.5]

500/

110

00/

1

Ars

enic

716

0505

/14/

01N

F1

13.

8—

——

——

Bar

ium

716

0505

/14/

01F

11

19—

2000

0/1

1000

0/1

Bar

ium

716

0505

/14/

01N

F1

120

——

——

—

Ber

ylliu

m7

1605

05/1

4/01

F1

0—

[0.0

12]

40/

1—

—

Ber

ylliu

m7

1605

05/1

4/01

NF

11

0.02

9—

——

——

Bor

on7

1605

05/1

4/01

F1

184

——

—75

00/

1

Bor

on7

1605

05/1

4/01

NF

11

90—

——

——

Bro

mid

e7

1605

05/1

4/01

F1

0—

[200

]—

——

—

Cad

miu

m7

1605

05/1

4/01

F1

0—

[0.0

66]

50/

110

0/1

Cad

miu

m7

1605

05/1

4/01

NF

11

0.19

1—

——

——

Cal

cium

716

0505

/14/

01F

11

1200

0—

——

——

Cal

cium

716

0505

/14/

01N

F1

112

000

——

——

—


ER2004-0072 A-67 May 2005

Ta

ble

A-3

0 (

co

nti

nu

ed

)

Par

amet

eran

dA

nal

yte

Scr

een

Dep

th(f

t)a

Co

llect

ion

Dat

eF

ield

Pre

par

atio

n

Nu

mb

ero

fA

nal

yses

Nu

mb

ero

fD

etec

ts

Det

ecte

dV

alu

e

(mg

/L)

No

n-

det

ecte

dV

alu

e

(mg

/L)

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nki

ng

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erM

CL

b

(mg

/L)

Fre

qu

ency

of

Det

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>�D

rin

kin

gW

ater

MC

L

NM

ED

c

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un

dw

ater

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nd

ard

d

(mg

/L)

Fre

qu

ency

of

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ects

>�N

ME

DG

rou

nd

wat

erS

tan

dar

d

Chl

orid

e7

1605

05/1

4/01

F1

130

00—

2500

000/

125

0000

0/1

Chr

omiu

m (t

otal

)7

1605

05/1

4/01

F1

11.

7—

100

0/1

500/

1

Chr

omiu

m (t

otal

)7

1605

05/1

4/01

NF

11

41—

——

——

Cob

alt

716

0505

/14/

01F

10

—[0

.37]

——

500/

1

Cob

alt

716

0505

/14/

01N

F1

10.

45—

——

——

Cop

per

716

0505

/14/

01F

10

—[0

.27]

1300

0/1

1000

0/1

Cop

per

716

0505

/14/

01N

F1

10.

95—

——

——

Cya

nide

(tot

al)

716

0505

/14/

01N

F1

0—

[10]

——

——

Fluo

ride

716

0505

/14/

01F

11

160

—40

000/

116

000/

1

Iron

716

0505

/14/

01F

10

—[1

00]

300

0/1

1000

0/1

Iron

716

0505

/14/

01N

F1

141

0—

——

——

Lead

716

0505

/14/

01F

10

—[0

.037

]15

0/1

500/

1

Lead

716

0505

/14/

01N

F1

0—

[0.0

37]

——

——

Mag

nesi

um7

1605

05/1

4/01

F1

129

00—

——

——

Mag

nesi

um7

1605

05/1

4/01

NF

11

3000

——

——

—

Man

gane

se7

1605

05/1

4/01

F1

13.

6—

500/

120

00/

1

Man

gane

se7

1605

05/1

4/01

NF

11

7.9

——

——

—

Mer

cury

716

0505

/14/

01F

10

—[0

.033

]2

0/1

——

Mer

cury

716

0505

/14/

01N

F1

0—

[0.0

33]

——

20/

1

Mol

ybde

num

716

0505

/14/

01F

10

—[3

.8]

——

——

Mol

ybde

num

716

0505

/14/

01N

F1

14.

9—

——

——

Nic

kel

716

0505

/14/

01F

11

1.4

—10

00/

120

00/

1

Nic

kel

716

0505

/14/

01N

F1

126

——

——

—

Nitr

ate

+ N

itrite

(as

N)

716

0505

/14/

01F

11

380

—10

000

0/1

——

Per

chlo

rate

716

0505

/14/

01F

10

—[2

.49]

——

——

Pho

spho

rus

(tota

l)7

1605

05/1

4/01

F1

182

0—

——

——

Pot

assi

um7

1605

05/1

4/01

F1

114

00—

——

——

Pot

assi

um7

1605

05/1

4/01

NF

11

1500

——

——

—

Sel

eniu

m7

1605

05/1

4/01

F1

0—

[1.9

]50

0/1

500/

1

Sel

eniu

m7

1605

05/1

4/01

NF

10

—[1

.9]

——

——

SiO

27

1605

05/1

4/01

F1

155

640

——

——

—


May 2005 A-68 ER2004-0072

Ta

ble

A-3

0 (

co

nti

nu

ed

)

Par

amet

eran

dA

nal

yte

Scr

een

Dep

th(f

t)a

Co

llect

ion

Dat

eF

ield

Pre

par

atio

n

Nu

mb

ero

fA

nal

yses

Nu

mb

ero

fD

etec

ts

Det

ecte

dV

alu

e

(mg

/L)

No

n-

det

ecte

dV

alu

e

(mg

/L)

Dri

nki

ng

Wat

erM

CL

b

(mg

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

gW

ater

MC

L

NM

ED

c

Gro

un

dw

ater

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nd

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d

(mg

/L)

Fre

qu

ency

of

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ects

>�N

ME

DG

rou

nd

wat

erS

tan

dar

d

SiO

27

1605

05/1

4/01

NF

11

5564

0—

——

——

Silv

er7

1605

05/1

4/01

F1

0—

[0.5

7]10

00/

150

0/1

Silv

er7

1605

05/1

4/01

NF

11

0.65

——

——

—

Sod

ium

716

0505

/14/

01F

11

1000

0—

——

——

Sod

ium

716

0505

/14/

01N

F1

110

000

——

——

—

Stro

ntiu

m7

1605

05/1

4/01

F1

176

——

——

—

Stro

ntiu

m7

1605

05/1

4/01

NF

11

76—

——

——

Sul

fate

716

0505

/14/

01F

11

3700

—25

0000

0/1

6000

000/

1

Thal

lium

716

0505

/14/

01F

10

—[0

.077

]2

0/1

——

Thal

lium

716

0505

/14/

01N

F1

10.

278

——

——

—

Ura

nium

716

0505

/14/

01F

11

0.49

5—

200/

150

000/

1

Ura

nium

716

0505

/14/

01N

F1

10.

539

——

——

—

Van

adiu

m7

1605

05/1

4/01

F1

13.

3—

——

——

Van

adiu

m7

1605

05/1

4/01

NF

11

3.7

——

——

—

Zinc

716

0505

/14/

01F

10

—[5

.2]

5000

0/1

1000

00/

1

Zinc

716

0505

/14/

01N

F1

129

——

——

—

m


ER2004-0072 A-69 May 2005

Ta

ble

A-3

1R

eg

ion

al

We

ll R

-25

Sc

ree

n 8

Se

co

nd

Ro

un

d S

am

ple

Re

su

lts

: D

ata

Su

mm

ary

fo

r In

org

an

ic C

he

mic

als

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

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llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

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>�D

rin

kin

g

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CL

NM

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c

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(mg

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qu

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of

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>�N

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un

dw

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lkal

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(tota

l as

CaC

O3)

817

9605

/14/

01N

F1

158

000

——

——

—

pH8

1796

05/1

4/01

NF

11

7.57

—>6

& <

90/

1>6

& <

90/

1

Spe

cific

Con

duct

ance

(mS

/cm

)8

1796

05/1

4/01

NF

11

157

——

0/1

—0/

1

Tem

pera

ture

(°C

)8

1796

05/1

4/01

NF

11

18.9

——

0/1

—0/

1

Turb

idity

(NTU

)g8

1796

05/1

4/01

NF

11

6.5

——

0/1

—0/

1

An

aly

te

Lab

Alk

alin

ity(to

tal a

s C

aCO

3)8

1796

05/1

4/01

F1

170

000

——

——

—

Alu

min

um8

1796

05/1

4/01

F1

124

0—

501/

150

000/

1

Alu

min

um8

1796

05/1

4/01

NF

11

300

——

——

—

Am

mon

ia (a

s N

)8

1796

05/1

4/01

F1

0—

[500

]—

——

—

Ant

imon

y8

1796

05/1

4/01

F1

10.

468

—6

0/1

——

Ant

imon

y8

1796

05/1

4/01

NF

10

—[2

.1]

——

——

Ars

enic

817

9605

/14/

01F

10

—[1

.5]

500/

110

00/

1

Ars

enic

817

9605

/14/

01N

F1

12.

8—

——

——

Bar

ium

817

9605

/14/

01F

11

17—

2000

0/1

1000

0/1

Bar

ium

817

9605

/14/

01N

F1

118

——

——

—

Ber

ylliu

m8

1796

05/1

4/01

F1

0—

[0.0

12]

40/

1—

—

Ber

ylliu

m8

1796

05/1

4/01

NF

11

0.10

2—

——

——

Bor

on8

1796

05/1

4/01

F1

182

——

—75

00/

1

Bor

on8

1796

05/1

4/01

NF

11

86—

——

——

Bro

mid

e8

1796

05/1

4/01

F1

0—

[200

]—

——

—

Cad

miu

m8

1796

05/1

4/01

F1

0—

[0.0

66]

50/

110

0/1

Cad

miu

m8

1796

05/1

4/01

NF

10

—[0

.066

]—

——

—

Cal

cium

817

9605

/14/

01F

11

1100

0—

——

——

Cal

cium

817

9605

/14/

01N

F1

111

000

——

——

—


May 2005 A-70 ER2004-0072

Ta

ble

A-3

1 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

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ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

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nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

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er M

CL

NM

ED

c

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un

dw

ater

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nd

ard

d

(mg

/L)

Fre

qu

ency

of

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>�N

ME

D

Gro

un

dw

ater

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nd

ard

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orid

e8

1796

05/1

4/01

F1

128

00—

2500

000/

125

0000

0/1

Chr

omiu

m (t

otal

)8

1796

05/1

4/01

F1

10.

26—

100

0/1

500/

1

Chr

omiu

m (t

otal

)8

1796

05/1

4/01

NF

11

4.2

——

——

—

Cob

alt

817

9605

/14/

01F

10

—[0

.37]

——

500/

1

Cob

alt

817

9605

/14/

01N

F1

0—

[0.3

7]—

——

—

Cop

per

817

9605

/14/

01F

10

—[0

.27]

1300

0/1

1000

0/1

Cop

per

817

9605

/14/

01N

F1

0—

[0.2

7]—

——

—

Cya

nide

(tot

al)

817

9605

/14/

01N

F1

0—

[10]

——

——

Fluo

ride

817

9605

/14/

01F

11

180

—40

000/

116

000/

1

Iron

817

9605

/14/

01F

10

—[1

20]

300

0/1

1000

0/1

Iron

817

9605

/14/

01N

F1

164

0—

——

——

Lead

817

9605

/14/

01F

10

—[0

.037

]15

0/1

500/

1

Lead

817

9605

/14/

01N

F1

10.

041

——

——

—

Mag

nesi

um8

1796

05/1

4/01

F1

125

00—

——

——

Mag

nesi

um8

1796

05/1

4/01

NF

11

2600

——

——

—

Man

gane

se8

1796

05/1

4/01

F1

11.

5—

500/

120

00/

1

Man

gane

se8

1796

05/1

4/01

NF

11

3.8

——

——

—

Mer

cury

817

9605

/14/

01F

10

—[0

.033

]2

0/1

——

Mer

cury

817

9605

/14/

01N

F1

0—

[0.0

33]

——

20/

1

Mol

ybde

num

817

9605

/14/

01F

10

—[3

.8]

——

——

Mol

ybde

num

817

9605

/14/

01N

F1

0—

[3.8

]—

——

—

Nic

kel

817

9605

/14/

01F

11

5—

100

0/1

200

0/1

Nic

kel

817

9605

/14/

01N

F1

13.

2—

——

——

Nitr

ate

+ N

itrite

(as

N)

817

9605

/14/

01F

11

430

—10

000

0/1

——

Per

chlo

rate

817

9605

/14/

01F

10

—[1

.86]

——

——

Pho

spho

rus

(tota

l)8

1796

05/1

4/01

F1

111

00—

——

——

Pot

assi

um8

1796

05/1

4/01

F1

125

00—

——

——

Pot

assi

um8

1796

05/1

4/01

NF

11

2500

——

——

—

Sel

eniu

m8

1796

05/1

4/01

F1

0—

[1.9

]50

0/1

500/

1


ER2004-0072 A-71 May 2005

Ta

ble

A-3

1 (

co

nti

nu

ed

)

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

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ects

>�D

rin

kin

g

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er M

CL

NM

ED

c

Gro

un

dw

ater

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nd

ard

d

(mg

/L)

Fre

qu

ency

of

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>�N

ME

D

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un

dw

ater

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nd

ard

Sel

eniu

m8

1796

05/1

4/01

NF

10

—[1

.9]

——

——

SiO

28

1796

05/1

4/01

F1

153

500

——

——

—

SiO

28

1796

05/1

4/01

NF

11

5350

0—

——

——

Silv

er8

1796

05/1

4/01

F1

0—

[0.5

7]10

00/

150

0/1

Silv

er8

1796

05/1

4/01

NF

10

—[0

.57]

——

——

Sod

ium

817

9605

/14/

01F

11

1300

0—

——

——

Sod

ium

817

9605

/14/

01N

F1

113

000

——

——

—

Stro

ntiu

m8

1796

05/1

4/01

F1

199

——

——

—

Stro

ntiu

m8

1796

05/1

4/01

NF

11

100

——

——

—

Sul

fate

817

9605

/14/

01F

11

4200

—25

0000

0/1

6000

000/

1

Thal

lium

817

9605

/14/

01F

10

—[0

.077

]2

0/1

——

Thal

lium

817

9605

/14/

01N

F1

0—

[0.0

77]

——

——

Ura

nium

817

9605

/14/

01F

11

0.64

4—

200/

150

000/

1

Ura

nium

817

9605

/14/

01N

F1

10.

779

——

——

—

Van

adiu

m8

1796

05/1

4/01

F1

12.

8—

——

——

Van

adiu

m8

1796

05/1

4/01

NF

11

2.9

——

——

—

Zinc

817

9605

/14/

01F

11

9—

5000

0/1

1000

00/

1

Zinc

817

9605

/14/

01N

F1

17.

3—

——

——

m


May 2005 A-72 ER2004-0072

Ta

ble

A-3

2R

eg

ion

al

We

ll R

-25

Sc

ree

n 1

Se

co

nd

Ro

un

d S

am

ple

Re

su

lts

: D

ata

Su

mm

ary

fo

r D

ete

cte

d O

rga

nic

Ch

em

ica

ls

Par

amet

er

and

An

alyt

eS

cree

n

Dep

th

(ft)

a

Co

llect

ion

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(mg

/L)

No

n-

det

ecte

d

Val

ue

(mg

/L)

Dri

nki

ng

Wat

er

MC

Lb

(mg

/L)

Fre

qu

ency

of

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>�D

rin

kin

g

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er M

CL

NM

ED

c

Gro

un

dw

ater

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nd

ard

d

(mg

/L)

Fre

qu

ency

of

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ects

>�N

ME

D

Gro

un

dw

ater

Sta

nd

ard

Tric

hlor

oeth

ene

175

505

/03/

01N

Fe1

11.

4—

f5

0/1

100

0/1

4-A

min

o-2,

6,di

nitro

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ene

175

505

/03/

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40—

——

——

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o-2,

6,di

nitro

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175

505

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175

505

/03/

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——

——

RD

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755

05/0

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NF

11

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0—

——

——

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zene

175

505

/03/

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——

——

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uene

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11

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ER2004-0072 A-73 May 2005

Ta

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Ta

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9205

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May 2005 A-74 ER2004-0072

Ta

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5R

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We

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-25

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513

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——

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ER2004-0072 A-75 May 2005

Ta

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——

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614

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——

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May 2005 A-76 ER2004-0072

Ta

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ER2004-0072 A-77 May 2005

Ta

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May 2005 A-78 ER2004-0072

Ta

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ER2004-0072 A-79 May 2005

Ta

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289

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May 2005 A-80 ER2004-0072

Ta

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1R

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We

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411

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411

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01F

11

0.37

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411

9205

/07/

01N

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47—

——


ER2004-0072 A-81 May 2005

Ta

ble

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2R

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al

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-25

Sc

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co

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ER2004-0072 A-83 May 2005

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ER2004-0072 A-85 May 2005

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May 2005 A-88 ER2004-0072

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ER2004-0072 A-91 May 2005

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May 2005 A-92 ER2004-0072

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ER2004-0072 A-93 May 2005

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May 2005 A-94 ER2004-0072

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ER2004-0072 A-95 May 2005

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May 2005 A-96 ER2004-0072

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May 2005 A-98 ER2004-0072

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ER2004-0072 A-99 May 2005

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May 2005 A-100 ER2004-0072

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ER2004-0072 A-101 May 2005

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May 2005 A-102 ER2004-0072

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ER2004-0072 A-103 May 2005

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May 2005 A-104 ER2004-0072

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ER2004-0072 A-105 May 2005

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May 2005 A-106 ER2004-0072

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ER2004-0072 A-107 May 2005

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May 2005 A-108 ER2004-0072

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ER2004-0072 A-109 May 2005

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May 2005 A-110 ER2004-0072

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ER2004-0072 A-111 May 2005

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May 2005 A-112 ER2004-0072

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ER2004-0072 A-113 May 2005

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May 2005 A-114 ER2004-0072

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ER2004-0072 A-115 May 2005

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May 2005 A-116 ER2004-0072

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ER2004-0072 A-117 May 2005

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May 2005 A-118 ER2004-0072

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ER2004-0072 A-119 May 2005

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May 2005 A-120 ER2004-0072

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ER2004-0072 A-121 May 2005

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aTh

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May 2005 A-122 ER2004-0072

An

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th

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ER2004-0072 A-123 May 2005

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May 2005 A-124 ER2004-0072

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ER2004-0072 A-125 May 2005

Par

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May 2005 A-126 ER2004-0072

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ER2004-0072 A-127 May 2005

Par

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May 2005 A-128 ER2004-0072

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ER2004-0072 A-129 May 2005

Par

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May 2005 A-130 ER2004-0072

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ER2004-0072 A-131 May 2005

Par

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May 2005 A-132 ER2004-0072

Par

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and

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cree

n

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ER2004-0072 A-133 May 2005

Par

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May 2005 A-134 ER2004-0072

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ER2004-0072 A-135 May 2005

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May 2005 A-136 ER2004-0072

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ER2004-0072 A-137 May 2005

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May 2005 A-142 ER2004-0072

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ER2004-0072 A-143 May 2005

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May 2005 A-144 ER2004-0072

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May 2005 A-146 ER2004-0072

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ER2004-0072 A-147 May 2005

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May 2005 A-148 ER2004-0072

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ER2004-0072 A-149 May 2005

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May 2005 A-150 ER2004-0072

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May 2005 A-152 ER2004-0072

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r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.


ER2004-0072 A-159 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(�g

/L)

No

n-

det

ecte

d

Val

ue

(�g

/L)

Dri

nki

ng

Wat

er

MC

Lb

(�g

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(�g

/L)

Fre

qu

ency

of

Det

ects

> N

ME

D

Gro

un

dw

ater

Sta

nd

ard

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.


May 2005 A-160 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(�g

/L)

No

n-

det

ecte

d

Val

ue

(�g

/L)

Dri

nki

ng

Wat

er

MC

Lb

(�g

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(�g

/L)

Fre

qu

ency

of

Det

ects

> N

ME

D

Gro

un

dw

ater

Sta

nd

ard

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(�g

/L)

No

n-

det

ecte

d

Val

ue

(�g

/L)

Dri

nki

ng

Wat

er

MC

Lb

(�g

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(�g

/L)

Fre

qu

ency

of

Det

ects

> N

ME

D

Gro

un

dw

ater

Sta

nd

ard

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.


ER2004-0072 A-161 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er

of

An

alys

es

Nu

mb

er

of

Det

ects

Det

ecte

d

Val

ue

(�g

/L)

No

n-

det

ecte

d

Val

ue

(�g

/L)

Dri

nki

ng

Wat

er

MC

Lb

(�g

/L)

Fre

qu

ency

of

Det

ects

>�D

rin

kin

g

Wat

er M

CL

NM

ED

c

Gro

un

dw

ater

Sta

nd

ard

d

(�g

/L)

Fre

qu

ency

of

Det

ects

> N

ME

D

Gro

un

dw

ater

Sta

nd

ard

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.


May 2005 A-162 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er o

f

An

alys

es

Nu

mb

er o

f

Det

ects

Det

ecte

d

Val

ue

(pC

i/L)

No

nd

etec

ted

Val

ue

(pC

i/L)

Dri

nki

ng

Wat

er M

CL

b

(pC

i/L)

Fre

qu

ency

of

Det

ects

> D

rin

kin

g

Wat

er M

CL

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.


ER2004-0072 A-163 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er o

f

An

alys

es

Nu

mb

er o

f

Det

ects

Det

ecte

d

Val

ue

(pC

i/L)

No

nd

etec

ted

Val

ue

(pC

i/L)

Dri

nki

ng

Wat

er M

CL

b

(pC

i/L)

Fre

qu

ency

of

Det

ects

> D

rin

kin

g

Wat

er M

CL

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.


May 2005 A-164 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er o

f

An

alys

es

Nu

mb

er o

f

Det

ects

Det

ecte

d

Val

ue

(pC

i/L)

No

nd

etec

ted

Val

ue

(pC

i/L)

Dri

nki

ng

Wat

er M

CL

b

(pC

i/L)

Fre

qu

ency

of

Det

ects

> D

rin

kin

g

Wat

er M

CL

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er o

f

An

alys

es

Nu

mb

er o

f

Det

ects

Det

ecte

d

Val

ue

(pC

i/L)

No

nd

etec

ted

Val

ue

(pC

i/L)

Dri

nki

ng

Wat

er M

CL

b

(pC

i/L)

Fre

qu

ency

of

Det

ects

> D

rin

kin

g

Wat

er M

CL

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.


ER2004-0072 A-165 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er o

f

An

alys

es

Nu

mb

er o

f

Det

ects

Det

ecte

d

Val

ue

(pC

i/L)

No

nd

etec

ted

Val

ue

(pC

i/L)

Dri

nki

ng

Wat

er M

CL

b

(pC

i/L)

Fre

qu

ency

of

Det

ects

> D

rin

kin

g

Wat

er M

CL

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.


May 2005 A-166 ER2004-0072

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er o

f

An

alys

es

Nu

mb

er o

f

Det

ects

Det

ecte

d

Val

ue

(pC

i/L)

No

nd

etec

ted

Val

ue

(pC

i/L)

Dri

nki

ng

Wat

er M

CL

b

(pC

i/L)

Fre

qu

ency

of

Det

ects

> D

rin

kin

g

Wat

er M

CL

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.


ER2004-0072 A-167 May 2005

An

alyt

eS

cree

n

Dep

th

(ft)

aC

olle

ctio

n

Dat

e

Fie

ld

Pre

par

atio

n

Nu

mb

er o

f

An

alys

es

Nu

mb

er o

f

Det

ects

Det

ecte

d

Val

ue

(pC

i/L)

No

nd

etec

ted

Val

ue

(pC

i/L)

Dri

nki

ng

Wat

er M

CL

b

(pC

i/L)

Fre

qu

ency

of

Det

ects

> D

rin

kin

g

Wat

er M

CL

aTh

e st

atic

wat

er le

vel f

or th

e re

gion

al a

quife

r at R

-25

was

128

6 ft

whe

n th

e w

ell w

as d

rille

d.

Appendix B

Geochemical Calculations

GEOCHEMICAL CALCULATIONS FOR R-25, SCREEN #1.

SAMPLED ON 11/14/00.

9.00 MG/L 0.000 0.00000E+00

1 0 1 0 2 1 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.65 y /H+1

140 4.376E+01 -5.84 y /Total CO3-2 alkali

150 2.200E+01 -3.26 y /Ca+2

460 5.900E+00 -3.61 y /Mg+2

500 9.900E+00 -3.37 y /Na+1

180 1.100E+01 -3.51 y /Cl-1

770 8.220E+01 -3.07 y /H4SiO4

732 1.000E+01 -3.98 y /SO4-2

270 1.200E-01 -5.20 y /F-1

492 4.840E+00 -4.11 y /NO3-1

800 1.200E-01 -5.86 /Sr+2

580 7.700E-01 -5.09 y /PO4-3

100 7.000E-03 -7.29 /Ba+2

3 1

330 7.6500 0.0000 /H+1


May 2005 B-2 ER2004-0072



11.90 MG/L 0.000 0.00000E+00

1 0 1 0 2 1 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -6.98 y /H+1


150 2.600E+01 -3.19 y /Ca+2

460 5.600E+00 -3.64 y /Mg+2

500 9.400E+00 -3.39 y /Na+1

410 1.400E+00 -4.45 y /K+1

180 1.200E+01 -3.47 y /Cl-1

770 8.220E+01 -3.07 y /H4SiO4

732 1.200E+01 -3.90 y /SO4-2

270 2.200E-01 -4.94 y /F-1

492 4.360E+00 -4.15 y /NO3-1

580 4.000E-01 -5.38 /PO4-3

800 1.300E-01 -5.83 y /Sr+2

100 7.000E-03 -7.29 /Ba+2

3 1

330 6.9800 0.0000 /H+1


ER2004-0072 B-3 May 2005

GEOCHEMICAL CALCULATION D FOR R-25, SCREEN #1.


19.80 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.39 y /H+1

150 2.600E+01 -3.19 y /Ca+2

460 6.200E+00 -3.59 y /Mg+2

500 9.700E+00 -3.37 y /Na+1

410 7.000E-01 -4.75 y /K+1

180 1.300E+01 -3.44 y /Cl-1

770 7.870E+01 -3.09 y /H4SiO4

732 1.100E+01 -3.94 y /SO4-2

270 1.300E-01 -5.16 y /F-1

492 4.840E+00 -4.11 y /NO3-1


100 9.000E-03 -7.18 /Ba+2

580 2.500E-01 -5.58 /PO4-3

3 1

330 7.3900 0.0000 /H+1


May 2005 B-4 ER2004-0072



10.30 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.53 y /H+1

150 2.610E+01 -3.19 y /Ca+2

460 6.200E+00 -3.59 y /Mg+2

500 1.050E+01 -3.34 y /Na+1

410 1.300E+00 -4.48 y /K+1

180 1.050E+01 -3.53 y /Cl-1

770 8.260E+01 -3.07 y /H4SiO4

732 9.400E+00 -4.01 y /SO4-2

270 1.600E-01 -5.07 y /F-1

492 4.360E+00 -4.15 y /NO3-1


100 8.000E-03 -7.23 /Ba+2

3 1

330 7.5300 0.0000 /H+1


ER2004-0072 B-5 May 2005



8.80 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.64 y /H+1


150 1.400E+02 -2.46 y /Ca+2

460 4.800E+00 -3.70 y /Mg+2

500 1.100E+01 -3.32 y /Na+1

410 1.200E+00 -4.51 y /K+1

180 5.700E+00 -3.79 y /Cl-1

770 8.560E+01 -3.05 y /H4SiO4

732 2.800E+02 -2.54 y /SO4-2

470 1.300E-01 -5.63 y /Mn+2

492 2.680E+00 -4.36 y /NO3-1

800 4.400E-01 -5.30 y /Sr+2

580 2.460E+00 -4.59 y /PO4-3

100 3.000E-02 -6.66 /Ba+2

3 1

330 7.6400 0.0000 /H+1


May 2005 B-6 ER2004-0072



17.30 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.31 y /H+1


150 7.300E+01 -2.74 y /Ca+2

460 4.300E+00 -3.75 y /Mg+2

500 8.300E+00 -3.44 y /Na+1

410 8.000E-01 -4.69 y /K+1

180 5.400E+00 -3.82 y /Cl-1

770 8.900E+01 -3.03 y /H4SiO4

732 1.300E+02 -2.87 y /SO4-2

270 1.200E-01 -5.20 y /F-1

492 3.210E+00 -4.29 y /NO3-1

800 3.200E-01 -5.44 y /Sr+2

580 4.300E-01 -5.34 y /PO4-3

100 2.000E-02 -6.84 /Ba+2

3 1

330 7.3100 0.0000 /H+1


ER2004-0072 B-7 May 2005



19.70 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.48 y /H+1

150 8.200E+01 -2.69 y /Ca+2

460 4.800E+00 -3.70 y /Mg+2

500 8.900E+00 -3.41 y /Na+1

410 6.000E-01 -4.81 y /K+1

180 6.200E+00 -3.76 y /Cl-1

770 8.560E+01 -3.05 y /H4SiO4

732 1.500E+02 -2.81 y /SO4-2

470 1.400E-01 -5.59 y /Mn+2

280 2.200E-01 -5.40 y /Fe+2

800 3.500E-01 -5.40 y /Sr+2

580 1.380E+00 -4.84 y /PO4-3


100 3.000E-02 -6.66 /Ba+2

3 1

330 7.4800 0.0000 /H+1


May 2005 B-8 ER2004-0072



11.20 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.53 y /H+1


150 4.980E+01 -2.91 y /Ca+2

460 4.700E+00 -3.71 y /Mg+2

500 8.800E+00 -3.42 y /Na+1

410 6.000E-01 -4.81 y /K+1

180 4.800E+00 -3.87 y /Cl-1

770 8.500E+01 -3.05 y /H4SiO4

732 8.150E+01 -3.07 y /SO4-2

270 8.000E-02 -5.38 y /F-1

492 2.730E+00 -4.36 y /NO3-1

800 2.200E-01 -5.60 y /Sr+2

580 3.100E-01 -5.49 y /PO4-3

100 1.900E-02 -6.86 /Ba+2

3 1

330 7.5300 0.0000 /H+1


ER2004-0072 B-9 May 2005



10.80 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.73 y /H+1


150 2.200E+01 -3.26 y /Ca+2

460 4.700E+00 -3.71 y /Mg+2

500 1.400E+01 -3.22 y /Na+1

410 1.200E+00 -4.51 y /K+1

180 5.600E+00 -3.80 y /Cl-1

770 7.870E+01 -3.09 y /H4SiO4

732 9.600E+00 -4.00 y /SO4-2

270 1.100E-01 -5.24 y /F-1

470 2.100E-01 -5.42 y /Mn+2

800 1.500E-01 -5.77 y /Sr+2

580 8.600E+00 -4.04 y /PO4-3

100 8.000E-03 -7.23 /Ba+2

3 1

330 7.7300 0.0000 /H+1


May 2005 B-10 ER2004-0072



15.40 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.54 y /H+1


150 2.000E+01 -3.30 y /Ca+2

460 4.500E+00 -3.73 y /Mg+2

500 1.600E+01 -3.16 y /Na+1

410 1.300E+00 -4.48 y /K+1

180 3.200E+00 -4.04 y /Cl-1

770 8.900E+01 -3.03 y /H4SiO4

732 8.900E+00 -4.03 y /SO4-2

100 2.000E-02 -6.84 y /Ba+2

270 1.300E-01 -5.16 y /F-1

470 2.700E-01 -5.31 y /Mn+2

492 6.200E-01 -5.00 y /NO3-1

800 1.500E-01 -5.77 y /Sr+2

580 9.820E+00 -3.99 y /PO4-3

3 1

330 7.5400 0.0000 /H+1


ER2004-0072 B-11 May 2005



19.50 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.32 y /H+1

150 2.100E+01 -3.28 y /Ca+2

460 4.800E+00 -3.70 y /Mg+2

500 1.600E+01 -3.16 y /Na+1

410 1.200E+00 -4.51 y /K+1

180 4.000E+00 -3.95 y /Cl-1

770 8.560E+01 -3.05 y /H4SiO4

732 8.200E+00 -4.07 y /SO4-2

100 1.000E-02 -7.14 y /Ba+2

270 1.400E-01 -5.13 y /F-1

470 2.600E-01 -5.32 y /Mn+2

800 1.400E-01 -5.80 y /Sr+2

580 9.200E+00 -4.01 y /PO4-3


3 1

330 7.3200 0.0000 /H+1


May 2005 B-12 ER2004-0072



11.60 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.75 y /H+1


150 2.180E+01 -3.26 y /Ca+2

460 4.500E+00 -3.73 y /Mg+2

500 2.390E+01 -2.98 y /Na+1

410 1.300E+00 -4.48 y /K+1

180 3.000E+00 -4.07 y /Cl-1

770 8.140E+01 -3.07 y /H4SiO4

732 8.800E+00 -4.04 y /SO4-2

100 1.300E-02 -7.02 y /Ba+2

270 1.200E-01 -5.20 y /F-1

470 3.960E-01 -5.14 y /Mn+2

492 7.900E-01 -4.89 y /NO3-1

800 1.600E-01 -5.74 y /Sr+2

580 1.060E+01 -3.95 y /PO4-3

3 1

330 7.7500 0.0000 /H+1


ER2004-0072 B-13 May 2005



10.90 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -8.07 y /H+1


150 1.700E+01 -3.37 y /Ca+2

460 4.300E+00 -3.75 y /Mg+2

500 1.800E+01 -3.11 y /Na+1

410 3.000E+00 -4.12 y /K+1

180 7.900E+00 -3.65 y /Cl-1

770 8.560E+01 -3.05 y /H4SiO4

732 1.300E+01 -3.87 y /SO4-2

100 2.500E-02 -6.74 y /Ba+2

280 1.900E+00 -4.47 y /Fe+2

492 1.230E+00 -4.70 y /NO3-1

800 1.300E-01 -5.83 y /Sr+2

580 2.920E+00 -4.51 y /PO4-3

3 1

330 8.0700 0.0000 /H+1


May 2005 B-14 ER2004-0072



18.90 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -7.57 y /H+1

150 1.100E+01 -3.56 y /Ca+2

460 2.500E+00 -3.99 y /Mg+2

500 1.300E+01 -3.25 y /Na+1

410 2.500E+00 -4.19 y /K+1

180 2.800E+00 -4.10 y /Cl-1

770 8.560E+01 -3.05 y /H4SiO4

732 4.200E+00 -4.36 y /SO4-2

100 1.700E-02 -6.91 y /Ba+2

270 1.800E-01 -5.02 y /F-1

492 1.890E+00 -4.52 y /NO3-1

800 1.000E-01 -5.94 y /Sr+2

580 3.380E+00 -4.45 y /PO4-3


3 1

330 7.5700 0.0000 /H+1


ER2004-0072 B-15 May 2005



23.50 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -8.21 y /H+1

150 1.100E+01 -3.56 y /Ca+2

460 2.700E+00 -3.95 y /Mg+2

500 1.200E+01 -3.28 y /Na+1

410 2.200E+00 -4.25 y /K+1

180 2.600E+00 -4.13 y /Cl-1

770 8.560E+01 -3.05 y /H4SiO4

732 3.100E+00 -4.49 y /SO4-2

100 1.600E-02 -6.93 y /Ba+2

492 1.630E+00 -4.58 y /NO3-1

580 2.700E+00 -4.55 y /PO4-3


800 9.400E-02 -5.97 y /Sr+2

3 1

330 8.2100 0.0000 /H+1


May 2005 B-16 ER2004-0072



13.20 MG/L 0.000 0.00000E+00

1 0 1 0 1 0 0 0 1 1 0 0 0

0 0 0

330 0.000E+00 -8.06 y /H+1


150 1.100E+01 -3.56 y /Ca+2

460 2.600E+00 -3.97 y /Mg+2

500 1.340E+01 -3.23 y /Na+1

410 1.700E+00 -4.36 y /K+1

770 8.830E+01 -3.04 y /H4SiO4

732 2.400E+00 -4.60 y /SO4-2

100 1.800E-02 -6.88 y /Ba+2

270 2.200E-01 -4.94 y /F-1

492 1.720E+00 -4.56 y /NO3-1

800 9.600E-02 -5.96 y /Sr+2

580 1.630E+00 -4.77 y /PO4-3

3 1

330 8.0600 0.0000 /H+1

Documents

Characterization Well R-25 Geochemistry Report Alamos National Labs/Genera… · Characterization Well R-25 Geochemistry Report ER2004-0072 v May 2005 List of Acronyms and Abbreviations