ERROL L. MONTGOMERY & ASSOCIATES, INC, · rience with similar sediments in the Salt River Valley, we ... Analyze several reports and documents to obtain ... with field personnel responsible

I i I I I I I I I I I

SFUND RECORDS CTR

88014825

SFUND RECORDS CTR

0222-00256

AROAS*^

Memorandum Report April 22, 1987

RESULTS OF PRELIMINARY HYDROGEOLOGIC INVESTIGATIONS HASSAYAMPA LANDFILL

MARICOPA COUNTY, ARIZONA

ERROL L. MONTGOMERY & ASSOCIATES, INC, CONSULTANTS IN HYDROGEOLOGY

I

I I

1075 EAST FORT LOWELL ROAD, SUITE B

TELEX: 165597 MONTE TUC

TUCSON, ARIZONA 85719 (602) 881-4912

HflSSflYftMPA LftNDFILL 3100084




I

I CONTENTS

Page

CONCLUSIONS 1

INTRODUCTION 5

PREVIOUS INVESTIGATIONS 7

ANALYSIS OF EXISTING MONITOR WELLS 9 MONITOR WELLS (C-l-5)3daa[HS-l], C-l-5)3dac[HS-2],

AND (C-l-5)3ddal[HS-3] 9 Well Construction Details 10 TV Video Surveys 11 Hydrogeologic Conditions and Potential Impact

of Monitor Well Design on Groundwater 13 Survey for Water Level Measuring Points 15 Water Level Measurements 15

SOIL BORING (C-l-5)3dad[HW-B-l] AND VADOSE ZONE MONITOR WELLS (C-l-5)3dda2[HW-B-2] AND (C-l-5)3dbd[HW-B-3] 16

GROUNDWATER MOVEMENT 18

HASSAYAMPA LANDFILL PROPERTY BOUNDARIES 20

REFERENCES CITED 21

TABLES

Table

SUMMARY OF WATER LEVEL MEASUREMENTS FOR MONITOR WELLS {C-l-5)3daa [HS-1], (C-l-5)3dac[HS-23, and (C-l-5)3ddal[HS-3], HASSAYAMPA LANDFILL, MARICOPA COUNTY, ARIZONA

SUMMARY OF WELL CONSTRUCTION DETAILS FOR EXISTING VADOSE ZONE MONITOR WELLS (FROM ERTEC WESTERN, INC., 1982)

I

ILLUSTRATIONS

Figure

1 LOCATION MAP FOR HASSAYAMPA LANDFILL

2 SCHEMATIC DIAGRAM OF WELL CONSTRUCTION FOR MONITOR WELL (C-1-5)3daa[HS-l]

3 SCHEMATIC DIAGRAM OF WELL CONSTRUCTION FOR MONITOR WELL (C-1-5)3dac[HS-2]

4 SCHEMATIC DIAGRAM OF WELL CONSTRUCTION FOR MONITOR WELL (C-1-5)3ddal[HS-3]

5 RESULTS OF TOPOGRAPHIC SURVEY

6 PLOT PLAN MAP FOR HASSAYAMPA LANDFILL AREA (FROM MARICOPA COUNTY LANDFILL DEPARTMENT)

7 PLOT PLAN MAP FOR HASSAYAMPA LANDFILL (FROM MARICOPA COUNTY LANDFILL DEPARTMENT)

8 SITE PLAN MAP (FROM ERTEC WESTERN, INC., 1982)

APPENDICES

APPENDIX

A WELL NUMBERING SYSTEM

B RESULTS OF TV VIDEO SURVEYS

C LITHOLOGIC DESCRIPTIONS FOR DRILL CUTTINGS




I CONCLUSIONS

The following conclusions are based on results of preliminary hydro-

geologic investigations for the Hassayampa Landfill:

I

1. On-site monitor wells (C-l-5)3daa[HS-l], (C-l-5)3dac[HS-2],

and (C-l-5)3ddal[HS-3] were constructed by Arizona Department

of Health Services. Lithologic descriptions for drill cut

tings obtained during drilling of these monitor wells indi

cate that basin-fill deposits were penetrated by the monitor

wells. These basin-fill deposits may be classified, in order

of increasing depth, as follows:

a. Upper alluvial deposits unit, which consists chiefly of

clayey, silty, or gravelly sand, with some interbedded

silty clay and clayey sand; thickness ranges from 39 to

55 feet.

b. Basalt/fanglomerate unit, which is reported to consist

chiefly of interbedded black basaltic lava-flow rocks and

coarse alluvial deposits; top of the unit was penetrated

at depths ranging from 39 to 55 feet; thickness ranges

from 13 to 29 feet.

I

ERROL L. MONTGOMERY & ASSOCIATES, INC.

c. Sandy si It/siIty clay unit; top of the unit was penetra

ted at depths of 67 and 68 feet; thickness ranges from 33

to 44 feet.

d. Gravelly sand unit; top of the unit was penetrated at

depths ranging from 101 to 111 feet.

2. Review and analysis of data for monitor wells (C-l-5)3daa

[HS-1], (C-l-5)3dac[HS-2], and (C-l-5)3ddal[HS-3] indicate

that construction operations and design for the wells could

adversely affect chemical quality of groundwater samples

obtained from the wells, particularly for well (C-l-5)3daa

[HS-1]. The monitor wells provide a potential conduit for

movement of contaminants from the upper alluvial deposits

unit to the gravelly sand unit. Therefore, although labora

tory chemical analyses have detected volatile organic com

pounds in groundwater samples obtained from well (C-l-5)3daa

[HS-1], these results should not be used to conclude that the

contaminants have reached the uppermost aquifer zone by per

colation through the natural basin-fill sediments.

3. Results of TV video surveys conducted for monitor wells (C-

l-5)3daa[HS-l], (C-l-5)3dac[HS-2], and (C-l-5)3ddal[HS-3]

were analyzed to determine perforated intervals and condition

of casing. The perforated interval reported for well (C-1-

5)3daa[HS-l] was 58 to 88 feet, and is different from the

observed perforated interval, which is 83 to 88 feet. No

casing damage was observed in the wells.

4. On-site soil boring (C-l-5)3dad[HW-B-l] and vadose zone mon

itor wells (C-l-5)3dda2[HW-B-2] and (C-l-5)3dbd[HW-B-3] were

drilled and constructed by Ertec Western, Inc. Because the

annular seal in the wells does not extend below a depth of

three feet, the annulus provides a potential conduit for


downward movement of liquids. Abandonment procedures for

soil boring (C-l-5)3dad[HW-B-l] are not reported. If impro

perly abandoned, soil boring (C-l-5)3dad[HW-B-l] could pro

vide a conduit for downward movement of liquids. It is not

known if these wells have been monitored after construction.

The monitor wells were not noted during our site inspection

on April 1, 1987.

5. On April 1, 1987, water levels were measured, and altitude

and location of measuring points were surveyed for monitor

wells (C-l-5)3daa[HS-l], (C-l-5)3dac[HS-2], and (C-l-5)3ddal

[HS-3]. Analyses of results indicate that direction of

groundwater flow in the uppermost aquifer zone is to the

south-southwest; average hydraulic gradient is about 0.005,

or about 26 feet per mile.

6. Average hydraulic conductivity of the uppermost aquifer zone

penetrated by monitor wells (C-l-5)3daa[HS-l], (C-l-5)3dac

[HS-2], and (C-l-5)3ddal[HS-3] was estimated by Arizona

Department of Health Services (1982), from analysis of water 2

level recovery data, to be about 22 gpd/ft (gallons per day

per square foot of aquifer at 1:1 hydraulic gradient). Based

on our review of lithologic descriptions for sediments pene

trated by the monitor wells (Appendix C) and on our expe

rience with similar sediments in the Salt River Valley, we

believe that the magnitude of hydraulic conductivity esti

mated by Arizona Department of Health Services lies within

the range of values that would be appropriate for sediments

which occur in the perforated interval of the monitor wells.

Average hydraulic gradient is about 0.005, and average

effective porosity was estimated by Arizona Department of

Health Services (1982) to be about 0.25. These relations

indicate that average groundwater velocity in the uppermost

aquifer zone at the Landfill may be in the magnitude of 0.06


foot per day, or about 21 feet per year.

7. Nearly all of the Maricopa County property at the Hassayampa

Landfill is used for landfilling operations except for two

small parcels located west of Wickenburg Road and east of

monitor well (C-l-5)3daa[HS-l] (Figure 1).

a

i


Memorandum Report

April 22, 1987

RESULTS OF PRELIMINARY HYDROGEOLOGIC INVESTIGATIONS

HASSAYAMPA LANDFILL


INTRODUCTION

In accordance with arrangements made by Mr. James G. Derouin, of

Jennings, Strouss & Salmon, on behalf of the Hassayampa Steering Committee,

this report was prepared to give results of preliminary hydrogeologic in

vestigations at the Hassayampa Landfill, Maricopa County, Arizona. The

preliminary investigations included the following TASKS, as outlined in our

March 31, 1987 proposal:

TASK 1: Conduct topographic survey to determine altitude and

location of measuring points for the three existing

monitor wells at the Hassayampa Landfill.

TASK 2: Measure water level in each existing monitor well using

calibrated water level sounders.


TASK 3: Conduct TV video surveys to verify perforated intervals

and conditions in each monitor well.

TASK 4: Analyze water level data for the monitor wells to assess

direction and rate of groundwater movement.

TASK 5: Analyze several reports and documents to obtain data on

monitor well construction; conduct telephone interviews

with field personnel responsible for construction of the

monitor wells; evaluate the monitor well construction

details for appropriateness; and assess potential water

quality problems associated with the monitor well de

sign.

TASK 6: Prepare memorandum report containing results for TASKS 1

through 5.


PREVIOUS INVESTIGATIONS

Results of previous investigations for the Hassayampa Landfill are

sources of information for hydrogeologic conditions, historic disposal

practices, disposal pit locations, types of substances disposed, and for

locations of off-site and on-site wells. Several documents were received

from the Hassayampa Steering Committee regarding the previous investiga

tions. These documents were reviewed and analyzed for preparation of the

present report. The documents include:

Hydrogeologic Conditions and Waste Disposal at the Hassayampa,

Casa Grande and Somerton Landfills, Arizona. Prepared by

Kenneth D. Schmidt and Robert C. Scott for Arizona Department

of Health Services, dated January 1977.

Site Inspection Report on Hassayampa Landfill, Hassayampa,

Arizona. Prepared by Ecology and Environment, Inc. for U. S.

Environmental Protection Agency, dated February 10, 1981.

Arizona Department of Health Services inter-office memorandum,

dated October 27, 1981, from Bob Hollander to Tibaldo Canez.

RE: Alternatives and cost estimates for completion of moni

toring wells at the Hassayampa Landfill.

Letter, dated November 19, 1981, from James Angel 1, Arizona

Department of Health Services, to William Wood, City of

Phoenix Engineering Department. RE: Monitoring well speci

fications.

Geotechnical Evaluation of the Influence of Hassayampa Land

fill Hazardous Wastes on the PVNGS Conveyance Pipeline.

Prepared by Ertec Western, Inc. for Arizona Nuclear Power


Project and NUS Corporation, dated March 17, 1982.

Open Dump Inventory of Hassayampa Landfill, Ground Water

Criterion. Prepared by Arizona Department of Health Services,

dated September 1982.

Site Inspection and Sampling Documentation Report, Hassayampa

Landfill. Prepared by Ecology and Environment, Inc. for U. S.

Environmental Protection Agency, dated August 5, 1983.

Hassayampa Landfill Site Inspection Report. Prepared by

Arizona Department of Health Services, dated May 1, 1985.

In addition, data and reports for the Landfill area in our files were

reviewed and analyzed. These reports include:

Study of Waterlogging Problems in the West Salt River and

Hassayampa Sub-Basins of the Phoenix Active Management Area:

Task IA - Evaluation of Past Hydrogeologic Conditions. Pre

pared by Montgomery & Associates for Arizona Department of

Water Resources, dated August 25, 1986.


ANALYSIS OF EXISTING MONITOR WELLS

Three monitor wells were constructed at the Hassayampa Landfill in

fall 1981 by Arizona Department of Health Services. These wells are iden

tified as (C-l-5)3daa[HS-l], (C-l-5)3dac[HS-2], and (C-l-5)3ddal[HS-3].

Construction details for these wells were given by Arizona Department of

Health Services (1981a, 1981b, 1982, and 1985). In addition, soil boring

(C-l-5)3dad[HW-B-l] and monitor wells (C-l-5)3dda2[HW-B-2] and (C-l-5)3dbd

[HW-B-3] were drilled and constructed at the Landfill by Ertec Western,

Inc. in December 1981; construction details were given by Ertec Western,

Inc. (1982). The well numbering system used in this report is given in

Appendix A. Locations for the five monitor wells and the soil boring are

shown on Figure 1. None of the monitor wells are equipped with pumps.

MONITOR WELLS (C-l-5)3daa[HS-l],

(C-l-5)3dac[HS-2], AND (C-l-5)3ddal[HS-3]

On April 1, 1987, Montgomery & Associates personnel conducted or

supervised field operations at the Landfill, including:

1. TV video surveys in monitor wells (C-l-5)3daa[HS-l], (C-1-

5)3dac[HS-2], and (C-l-5)3ddal[HS-3].

2. Survey for location and altitude of water level measuring

points for monitor wells (C-l-5)3daa[HS-l], (C-l-5)3dac[HS-

2], and (C-l-5)3ddal[HS-3].

3. Measurement of water levels in monitor wells (C-l-5)3daa[HS-

1], (C-l-5)3dac[HS-2], and (C-l-5)3ddal[HS-3].

4. Inspection of the Landfill property and surroundings.

10. ERROL L. MONTGOMERY & ASSOCIATES, INC.

5. On-site interview with Manuel Garcia and James Emmons of the

Maricopa County Landfill Department.

In addition, Arizona Department of Health Services personnel assigned to

construction of monitor wells (C-l-5)3daa[HS-l], (C-l-5)3dac[HS-2], and

(C-l-5)3ddal[HS-3] were interviewed via telephone. These personnel include

Allen L. Roesler, James Angel 1, and Robert Hollander.

Well Construction Details

Figures 2, 3, and 4 are schematic diagrams of well construction for

monitor wells (C-l-5)3daa[HS-l], (C-l-5)3dac[HS-2], and (C-l-5)3ddal[HS-3].

These figures were constructed from analysis of reports prepared by Arizona

Department of Health Services (1981a, 1982, and 1985), from results of

telephone interviews with Arizona Department of Health Services personnel,

and from analysis of results from the TV video surveys.

The monitor wells were drilled by Western Technologies, Inc., Phoenix,

Arizona, using mud-rotary drilling methods with organic-base drilling mud.

Initial construction for each of the monitor wells began in September 1981

by drilling an 8-3/4-inch diameter borehole to a depth of 120 feet below

land surface. Lithologic descriptions of drill cuttings from this borehole

were prepared by Allen L. Roesler (Arizona Department of Health Services,

1982 and 1985). Six-inch diameter blank and perforated PVC casing was

installed to total depth of the borehole, and an attempt was made to in

stall gravel pack material and bentonite pellets in the 3/4-inch annular

space between the casing and the borehole wall. Subsequent modification of

these wells was necessary for the following reasons (Arizona Department of

Health Services, 1981a):

. Annular space was insufficient for proper installation of

bentonite pellets.


. Position of the gravel pack and bentonite pellets in the

borehole was not known, and could not be determined.

. Proper grouting or sealing of the annular space in the vadose

zone could not be assured.

. Perforated interval in the wells was too deep to obtain water

samples from the uppermost aquifer zone.

. Because development operations after completion of drilling

were delayed, collapse of the annular space may have occurred

prior to installation of cement grout, which was intended to

provide an annular seal.

Arizona Department of Health Services subsequently modified the moni

tor wells. These modifications were completed in December 1981, nearly

three months after the initial drilling operations began. Telephone

interviews with Allen L. Roesler (March 25, 1987) and James Angell (March

30, 1987) indicate that the 6-inch diameter PVC casing was drilled and/or

pulled out of the 8-3/4-inch diameter boreholes. Using mud-rotary drilling

methods and organic-base mud, the boreholes were reamed to 11-3/4-inch

diameter to depths ranging from 88 feet at well (C-l-5)3daa[HS-l] to 107

feet at well (C-l-5)3dac[HS-2] (Figures 2, 3, and 4 ) . Four-inch diameter

blank and perforated PVC casing was installed to the reamed depths. Gravel

pack, sand pack, and cement were then placed in the annulus in the inter

vals shown on Figures 2, 3, and 4 (Arizona Department of Health Services,

1985). Perforations were reported to be 0.01-inch horizontal machine-cut

slots, 168 slots per linear foot (Arizona Department of Health Services,

1985).

TV Video Surveys

Results of TV video surveys conducted in the monitor wells on April 1,

ERROL L. MONTGOMERY & ASSOCIATES, INC. 12.

1987 by Buck Weber & Associates, Inc., Tempe, Arizona, were analyzed to

determine perforated interval. Perforated intervals reported by Arizona

Department of Health Services (1985) and perforated intervals observed dur

ing the TV video survey are given as follows:

MONITOR WELL

PERFORATED INTERVAL

(in feet below land surface)

REPORTED OBSERVED

(C-l-5)3daa[HS-l]

(C-l-5)3dac[HS-2]

(C-l-5)3ddal[HS-3]

58 - 88

77 - 107

83 - 88

77 - 107

68 - 98 70 - 98

(or 61 - 98 ?)

Results of the TV video survey for well (C-l-5)3ddal[HS-3] indicate that

perforations were clearly visible below 70 feet, and may also occur in the

interval from 61 to 70 feet. Observed perforated intervals are shown on

Figures 2, 3, and 4. Reports of the TV video surveys are given in Appendix

B.

Lateral movement of the TV camera during a TV video survey indicates

that the well casing is not vertically plumb. Such movement occurred dur

ing the TV video surveys for all three wells, and was most noticeable for

well (C-l-5)3dac[HS-2] (Appendix B). At wells (C-l-5)3dac[HS-2] and (C-1-

5)3ddal[HS-3], the PVC casing exits the ground at a noticeable angle from

vertical. No damage or failure of the casing was observed during the TV

video survey. Gas bubbles were occasionally observed rising in the water

in the wells.

ERROL L. MONTGOMERY & ASSOCIATES, INC. 13.

Hydrogeologic Conditions and Potential

Impact of Monitor Well Design on Groundwater

Lithologic descriptions for drill cuttings samples obtained during

drilling of monitor wells (C-l-5)3daa[HS-l], (C-l-5)3dac[HS-2], and (C-1-

5)3ddal[HS-3] are given in Appendix C and are summarized on Figures 2, 3,

and 4. The lithologic descriptions indicate that basin-fill deposits were

penetrated by the monitor wells. The basin-fill deposits may be classi

fied, in order of increasing depth, as follows:

1. Upper alluvial deposits unit, consisting chiefly of

clayey, silty, or gravelly sand, with some interbedded

silty clay and clayey sand; thickness ranges from 39 to

55 feet.

2. Basalt/fanglomerate unit, reported to consist chiefly of

interbedded black basaltic lava-flow rocks and coarse

alluvial deposits; top of the unit was penetrated at

depths ranging from 39 to 55 feet; thickness ranges from

13 to 29 feet.

3. Sandy silt/silty clay unit; top of the unit was pene

trated at depths of 67 and 68 feet; thickness ranges

from 33 to 44 feet.

4. Gravelly sand unit; top of the unit was penetrated at

depths ranging from 101 to 111 feet.

During construction of monitor wells (C-l-5)3daa[HS-l], (C-l-5)3dac

[HS-2], and (C-l-5)3ddal[HS-3], the basalt/fanglomerate unit and the sandy

silt/silty clay unit was believed by Arizona Department of Health Services

to comprise a zone of low permeability. The base of the annular seal in

ERROL L. MONTGOMERY & ASSOCIATES, INC. ^^'

these wells is reported to occur from three to nine feet below the top of

the basalt/fanglomerate unit. However, descriptions of correlative basalt

flows on Arlington Mesa (Ertec Western, Inc., 1982) and lithologic descrip

tions for drill cuttings of the basalt penetrated by the monitor wells

(Appendix C) indicate that the basalt zones penetrated by the monitor wells

are likely to have relatively high permeability. This relatively high

permeability is attributed to the occurrence of fractures, brecciation, and

blocky texture in the basalt. Permeability of the sandy silt/silty clay

unit is likely to be low and, where present, this unit may retard the ver

tical movement of liquids between the more permeable overlying and under

lying units. Permeability of coarse-grained sediments in the upper allu

vial deposits unit and the gravelly sand unit is likely to be moderate to

high (Ertec Western, Inc., 1982), and vertical and lateral groundwater

movement may occur readily in these units. To prevent vertical movement of

liquids across the low permeable sandy silt/silty clay unit via the annulus

in the wells, a continuous cement annular seal should have been installed

from land surface to a point below the base of the basalt/fanglomerate

unit.

Water levels measured in the monitor wells on April 1, 1987 were two

to 10 feet below the reported depth of the top of the low permeable sandy

silt/silty clay unit (Figures 2, 3, and 4). Therefore, the annulus in the

wells provides a potential conduit for movement of liquids from above the

low permeable sandy silt/silty clay unit to the more permeable sediments in

the underlying gravelly sand unit.

The nonreamed part of the 8-3/4-inch diameter borehole in each well

(Figures 2, 3, and 4) is most likely to be substantially or completely

filled with sloughed material from the borehole wall or with drill cuttings

from reaming operations. Because the sandy silt/silty clay unit would

provide a relatively stable borehole, sloughing would be most likely to

occur from the sand and gravel strata or from fractured or brecciated

portions of the basalt/fanglomerate unit. If drill cuttings from the ream

ing operations have filled the 8-3/4-inch borehole, these drill cuttings

15. ERROL L. MONTGOMERY & ASSOCIATES, INC.

would have first been derived from reaming of the upper alluvial deposits

unit, which consists chiefly of permeable coarse-grained sediments. In

either case, the fill material would be considerably more permeable than

the sandy silt/silty clay unit and would provide a potential conduit for

vertical movement of liquids.

At well (C-l-5)3daa[HS-l], located in the hazardous waste disposal

area, drill cuttings from reaming operations or sloughed material from the

upper alluvial deposits unit could have been contaminated with hazardous

waste. Material from the borehole wall could have sloughed to the lower

portions of the 11-3/4-inch borehole during installation of the four-inch

PVC casing and during the period between installation of the casing and

installation of the gravel pack. In addition, because the gravel pack and

sand pack materials were installed by pouring down the annulus, sediments

in the upper alluvial deposits unit could have been eroded from the bore

hole wall and could have mixed with the gravel and sand pack. Because the

wells were drilled using the mud-rotary drilling method, detection of

saturated or wetted sediments above the regional water table would have

been difficult.

The use of organic-base drilling mud is inappropriate for construction

of monitor wells to be used for analyses of organic compounds in ground

water.

These relations indicate that construction operations and design for

the monitor wells could adversely affect chemical quality of groundwater

samples obtained from the wells, particularly for well (C-l-5)3daa[HS-l].

The wells provide a potential conduit for movement of contaminants from the

upper alluvial deposits unit to the gravelly sand unit.

Survey for Water Level Measuring Points

On April 1, 1987, altitude and location of water level measuring

I I I I I I I I I I I I I I I I B


points for monitor wells (C-l-5)3daa[HS-l], (C-l-5)3dac[HS-2], and (C-1-

5)3ddal[HS-3] were surveyed by Morea-Hall Engineering, Inc., Phoenix,

Arizona. Results of the survey are shown on Figure 5. Water level meas

uring point for each well is a notch in the top of the uncapped four-inch

diameter PVC casing. Locations shown for these wells on Figure 1 are in

accordance with results of the survey.

Water Level Measurements

Static water levels were measured in monitor wells (C-l-5)3daa[HS-l],

(C-l-5)3dac[HS-2], and (C-l-5)3ddal[HS-3] on April 1, 1987 using a calibra

ted electrical water level sounder. Results are given in Table 1.

SOIL BORING (C-l-5)3dad[HW-B-l] AND VADOSE ZONE MONITOR

WELLS (C-l-5)3dda2[HW-B-2] AND (C-l-5)3dbd[HW-B-3]

Purpose and construction details of soil boring (C-l-5)3dad[HW-B-l]

and vadose zone monitor wells (C-1-5)3dda2[HW-B-2] and (C-l-5)3dbd[HW-B-3]

were given by Ertec Western, Inc. (1982). Drilling operations were con

ducted in December 1981 using a 7-inch diameter hollow-stem auger. Total

depth of the boreholes ranged from 20 to 30 feet. Approximate locations

for the soil boring and monitor wells are shown on Figure 1.

Lithologic logs for the 7-inch boreholes are given in Appendix C.

Ertec Western, Inc. (1982) reported that soil moisture content of the

strata penetrated was low. None of the borings are located near the

hazardous waste disposal site at the Landfill.

Soil borings at the (C-l-5)3dda2[HW-B-2] and (C-l-5)3dbd[HW-B-3] sites

were completed as vadose zone monitor wells. Construction details for

these wells are given in Table 2. Because the annular seal in these wells

I

I I I I I I I I I I I I I I I I I I I

17, ERROL L. MONTGOMERY & ASSOCIATES, INC.

does not extend below a depth of three feet, the annulus provides a poten

tial conduit for downward movement of liquids. Abandonment procedures for

soil boring (C-l-5)3dad[HW-B-l] are not reported. If improperly abandoned,

soil boring (C-l-5)3dad[HW-B-l] could provide a conduit for downward move

ment of liquids.

It is not known if these wells have been monitored after construction.

The monitor wells were not noted during our site inspection on April 1,

1987.

1 o ERROL L. MONTGOMERY & ASSOCIATES, INC.

GROUNDWATER MOVEMENT

Water level altitudes in the monitor wells were analyzed to determine

direction and rate of groundwater movement at the Landfill. These analyses

indicate that groundwater in the uppermost aquifer zone flows to the

south-southwest in response to a hydraulic gradient of about 0.005, or

about 26 feet per mile. This direction of groundwater movement is similar

to directions cited in previous investigations for the Landfill, and to the

direction given by Montgomery & Associates (1986) for the Hassayampa area.

Comparison of water level contour maps and water level change maps prepared

by Stulik and Laney (1976) with recent water level contour maps and water

level change maps prepared by Montgomery & Associates for the Hassayampa

area indicates that groundwater levels and direction of groundwater move

ment in the Landfill area have been relatively constant for more than 20

years.

The velocity of groundwater movement in an aquifer is directly propor

tional to the aquifer hydraulic conductivity and to hydraulic gradient; and

is inversely proportional to effective porosity of the aquifer media.

Effective porosity of aquifer media is less than porosity and is approxima

ted by specific yield. These relations are expressed as follows:

KI Where: V = Groundwater velocity in feet per day V = 7.48 ng

K = Aquifer hydraulic conductivity in gallons per day per square foot at 1:1 hydraulic gradient

I = Hydraulic gradient (dimensionless)

n = Effective porosity (dimensionless)

Average hydraulic conductivity of the uppermost aquifer zone penetra

ted by monitor wells (C-l-5)3daa[HS-l], (C-l-5)3dac[HS-2], and (C-l-5)3ddal

[HS-3] was estimated by Arizona Department of Health Services (1982), from

I I I I I I I I I I I I 1 I I I I I I

ERROL L. MONTGOMERY & ASSOCIATES, INC. ^^'

2

analysis of water level recovery data, to be about 22 gpd/ft (gallons per

day per square foot of aquifer at 1:1 hydraulic gradient). Based on our

review of lithologic descriptions for sediments penetrated by the monitor

wells (Appendix C) and on our experience with similar sediments in the Salt

River Valley, we believe that the magnitude of hydraulic conductivity

estimated by Arizona Department of Health Services lies within the range of

values that would be appropriate for sediments which occur in the

perforated interval of the monitor wells. Average hydraulic gradient is

about 0.005, or about 26 feet per mile. Average specific yield was

estimated by Arizona Department of Health Services (1982) to be about 0.25.

These relations indicate that average groundwater velocity in the uppermost

aquifer zone at the Landfill may be in the magnitude of 0.06 foot per day,

or about 21 feet per year.

I I I I I I I I I I I I I I I I I I I

20 ERROL L. MONTGOMERY & ASSOCIATES, INC.

HASSAYAMPA LANDFILL PROPERTY BOUNDARIES

In addition to TASKS described in our proposal dated March 31, 1987,

we were requested to prepare a plot plan delineating the boundary line of

the Maricopa County property in relation to the border of the Landfill area

and waste disposal pits. Montgomery & Associates requested this informa

tion from the Maricopa County Landfill Department and received the plot

plans shown on Figures 6 and 7. These illustrations and information

obtained from interviews with on-site personnel were used to construct

Figure 1, which shows the approximate County property boundary. The area

shown as fenced on Figure 1 is the approximate boundary of the Landfill

area. Location and boundaries of disposal sites within the Landfill area

were not received from the County; however, schematic diagrams for these

sites were given by Ecology & Environment, Inc. (1981 and 1983), Arizona

Department of Health Services (1982), and Ertec Western, Inc. (1982). The

general location of the boundary for the hazardous waste disposal site is

shown on Figure 8.

The County does not own land outside the property boundary shown on

Figure 1. However, the County has applied for a lease for a tract of

Federal land adjacent to the north boundary of the Landfill property. At

present (April 1987), this application is dormant. As shown on Figure 1,

small parcels of County property outside of the Landfill area lie west of

Wickenburg Road and east from monitor well (C-l-5)3daa[HS-l].

ERROL L. MONTGOMERY & ASSOCIATES, INC. 21,

REFERENCES CITED

Arizona Department of Health Services, 1981a. Subject: alternatives and cost estimates for completion of monitoring wells at the Hassayampa Landfill. Inter-office memorandum from Bob Hollander to Tibaldo Canez, October 27, 1981.

, 1981b. Subject: monitoring well specifications. Letter from James Ângell, Arizona Department of Health Services, to William Wood, City of Phoenix Engineering Department, November 19, 1981.

, 1982. Open dump inventory of Hassayampa Landfill, ground water criterion. Prepared by James Angell, September 1982.

, 1985. Hassayampa Landfill site inspection report. "Charles 6. Graf, May 1, 1985.

Prepared by

Ecology and Environment, Inc., 1981. Site inspection report on Hassayampa Landfill, Hassayampa, Arizona. Prepared for U. S. Environmental Protection Agency, February 10, 1981.

, 1983. Site inspection and sampling documentation report, Hassayampa Landfill. Prepared for U. S. Environmental Protection Agency, August 5, 1983.

Errol L. Montgomery & Associates, Inc., 1986. Study of waterlogging problems in the West Salt River and Hassayampa Sub-Basins of the Phoenix Active Management Area: Task IA - evaluation of past hydrogeologic conditions. Prepared for Arizona Department of Water Resources, August 25, 1986.

Ertec Western, Inc., 1982. Geotechnical evaluation of the influence of Hassayampa Landfill hazardous wastes on the PVNGS conveyance pipeline. Prepared for Arizona Nuclear Power Project and NUS Corporation, March 17, 1982.

Schmidt, K. E., and Scott, R. C , 1977. Hydrogeologic conditions and waste disposal at the Hassayampa, Casa Grande and Somerton Landfills, Arizona. Prepared for Arizona Department of Health Services, January 1977.

Stulik, R. S., and Laney, R. L., 1976. Maps showing ground-water conditions in the Lower Hassayampa area, Maricopa County, Arizona -1975. U. S. Geological Survey Water Resources Investigations 76-35, Open-File Report.

v^

3= OO

\r-

TABLE 1. SUMMARY OF WATER LEVEL MEASUREMENTS FOR MONITOR WELLS (C-l-5)3daa[HS-l], (C-l-5)3dac[HS-2], and (C-l-5)3ddal[HS-3]

HASSAYAMPA LANDFILL, MARICOPA COUNTY, ARIZONA

MONITOR WELL

(C-l-6)3daa[HS-l]

(C-l-5)3dac[HS-2]

(C-l-5)3ddal[HS-3]

DATE MEASURED

04-01-87

04-01-87

04-01-87

ALTITUDE OF MEASURING POINT^ ,

(feet msl)"

917.81

917.48

912.06

ALTITUDE OF LAND SURFACE , (feet msl)'

915.6

917.5

910.4

DEPTH TO WATER BELOW MEASURING POINT^ (feet)

71.87

77.00

73.33

WATER LEVEL ALTITUDE . (feet msl)°

845.94

840.48

838.73

, Measuring point is notch in top of uncapped four-inch diameter PVC casing Feet above mean sea level

ERROL L. MONTGOMERY & ASSOCIATES, INC. TUCSON, ARIZONA

TABLE 2. SUMMARY OF WELL CONSTRUCTION DETAILS FOR EXISTING VADOSE ZONE MONITOR WELLS

(FROM ERTEC WESTERN, INC., 1982)

Well No.

HV7-B-2

Casing and Uell Screen Type

4" Sch 40 PVC

Slot Size (Inches)

0.04

Depth of Slotted Interval (Ft.)

14,0 - 20.0

Sand Pack

No. 3 -Monterrey Sand

HV7-B-3 4- Sch 40 PVC 0.04 18.5 - 23.7 No. 3 -Monterrey Sand

NOTE: Grout seal placed around upper 3 feet of casing to reduce the possibility of surface in-flow.

s Ertec

73 3>

O

E X P L A N A T I 0 N

0

O

A

' • • ' • : $ : : ; : ; :

EXISTING MONITOR WELL FOR UPPERMOST AQUIFER ZONE

EXISTING VADOSE ZONE MONITOR WELL

SOIL BORING

MARICOPA COUNTY PROPERTY 0 I

IOOO

F E E T

FIGURE 1. LOCATION MAP FOR HASSAYAMPA LANDFILL

ERROL L. MONTCOMERy A ASSOCIATES, INC. C O N S U L T A N T S I N HYOKOOEOLOOV

TUCSON. ARIZONA

PVC SLIP CAP-

INCH BLANK STEEL CASING WITH LOCKING LID

CEMENT-

IIV4-INCH REAMED BOREHOLE-

SAND PACK—'•

4-INCH BLANK SCHEDULE 40 PVC CASING, GLUED JOINTS-

CEMENT-

SAND PACK PEA GRAVEL PACK-

< - i - 8 7 -STATIC VATER LEVEL

4-INCH PERFORATED SCHEDULE 40 PVC CASING, THREADED JOINTS (O.Oi-INCH, HORIZONTAL MACHINE-CUT SLOTS)

7

1

PVC CAP'

8%-INCH BOREHOLE

DEPTH, N FEET, BELOW

LAND SURFACE

LITHOLOGIC LOG (BASED ON ARIZONA

DEPARTMENT OF HEALTH SERVICES, 1985)

•49

55-•58

63 6 8 .

•70

•83

88

UPPER ALLUVIAL DEPOSITS UNIT

BASALT/FANGLOMERATE UNIT

SANDY SILT/SILTY CLAY UNIT

GRAVELLY SAND UNIT

120

PERFORATED INTERVAL IS BASED ON TV VIDEO SURVEY CONDUCTED 4 - 1 - 8 7

FIGURE 2. SCHEMATIC DIAGRAM OF WELL CONSTRUCTION FOR MONITOR WELL (C - l - 5)3daa [ HS - l ]

ERROL L. MONTGOMERY & ASSOCIATES, INC. CONSULTANTS IN HVOMOOEOLOOV TUCSON, ARIZONA

12-INCH BLANK STEEL CASING WITH LOCKING LID

PVC SLIP CAP

11%-INCH REAMED BOREHOLE

CEMENT

4-INCH BLANK SCHEDULE 40 PVC CASING, GLUED JOINTS

DEPTH, IN FEET, BELOW

LAND SURFACE

PVC CAP

SAND PACK

STATIC WATER LEVEL 4 - 1 - 8 7

PEA GRAVEL PACK

4-INCH PERFORATED SCHEDULE 40 PVC CASING, THREADED JOINTS (O.OI-INCH, HORIZONTAL MACHINE-CUT SLOTS)

8 % -INCH BOREHOLE




BASALT/ FANGLOMERATE UNIT


GRAVELLY SAND UNhT

PERFORATED INTERVAL IS BASED ON TV VIDEO SURVEY CONDUCTED 4 - 1 - 8 7

FIGURE 3. SCHEMATIC DIAGRAM OF WELL CONSTRUCTION FOR MONITOR WELL ( C - l - 5 ) 3 d a c [ H S - 2 ]

ERROL L. MONTGOMERY A ASSOCIATES, INC. CONSULTANTS IN HVDROOKOLOOV

TUCSON, ARIZONA

PVC SLIP CAP

12-INCH BLANK STEEL CASING WITH LOCKING LID

CEMENT

11%-INCH REAMED BOREHOLE

4- INCH BLANK SCHEDULE 40 PVC CASING, GLUED JOINTS

SAND PACK-

PEA GRAVEL PACK STATIC WATER LEVEL 4 - l - B ?

DEPTH, N FEET, BELOW

LAND SURFACE

4-INCH PERFORATED SCHEDULE 40 PVC CASING, THREADED JOINTS (O.OI-INCH HORIZONTAL MACHINE-CUT SLOTS)

PVC CAP

8V4- INCH BOREHOLE




BASALT/FANGLOMERATE UNIT'


GRAVELLY SAND UNIT

RESULTS OF TV VIDEO SURVEY CONDUCTED 4 - 1 - 8 7 INDICATE THAT PERFORATIONS ARE CLEARLY VISIBLE BELOW 70 FEET AND MAY ALSO

OCCUR FROM 61 TO 70 FEET.

FIGURE 4. SCHEMATIC DIAGRAM OF WELL CONSTRUCTION FOR MONITOR WELL ( C - l - 5 ) 3 d d a l [ H S - 3 ]

ERROL L. MONTGOMERY A ASSOCIATES, INC. CONSULTANTS IN HYDROOBOLOOV

TUCSON, ARIZONA

MOREA - HALL ENGINEERING, INC.

5225 N. 19th Avenue Suite 214 PHOENIX. ARIZONA 85015

(602) 246-8969

///fl^S/fy^M/^'y^ H/^^JJS J^2293.05

SHEET NO .

CALCULATED BY-

CHECKED BY

SCALE

OF.

DATE--

DATE

9/7.43

H ^ d . ^ l / = 9/2. <Pd ^r^p/^â^/î/^. e A^/J/^KJ / / s . 3 \

^ / 7 i 0 / ^ ^ / ^J0^^ /^ / / y^ :7^ • / ^ ^ / ^ T / / /"^^<0£//(yf^/Pj /7^./PA/dy £r^ i /A/^- /z /^y^/^n: : .^

^ / . ^ u < = 90 / . 2 2 ^ /!7J^/^^<^X. 7^/?' ^ • f ^ ^ (^ /p ' ^ . ^ ^ 7 7 / < ^ ^ . ^ . z:^^.

^

\

^.^^r^^/A/^ ^£t::. 3

I \

I t

I

> '

/'^âo'/p'

/ 'St:7/y7?/^^sr ^ / ?^ . / ^ ^ c : . ^y r/^.^ / ? . , s ^

FIGURE 5. RESULTS OF TOPOGRAPHIC SURVEY

/JtfOt

15 14

i : - r r V JT ' /.

"Tosr ELLir^T Z"^.

& a a* * t

FIGURE 6. PLOT PLAN MAP FOR HASSAYAMPA LANDFILL AREA (FROM MARICOPA COUNTY LANDFILL DEPARTMENT)

I 9 A^y , ' * ^ ^ i : / /^b

/ .

FIGURE 7. PLOT PLAN MAP FOR HASSAYAMPA LANDFILL (FROM MARICOPA COUNTY LANDFILL DEPARTMENT)

APPROXIMATE LIMITS OF HAZARDOUS WASTE OISTOSAL AREA

HASSAYAMPA LANDFILL

EXPLANATIOH

HWB-I • ERTEC BORING LOCATION

H S I A APPROXIMATE LOCATION OF

WELLS INSTALLED BY

ARIZONA OEPARTMENT OF

HEALTH SERVICES (ADHS)

SCALE 1 - . 12J8 -

0 i t n 1000

250 750

2000 3000 l c «

SErtac I HASSAV ADM WASTE/ | Ptff LINE STUOY

SITE PLAM l l

FIGURE 8. SITE PLAN MAP (FROM ERTEC WESTERN, INC. , 1982)

3=

o X

33

APPENDIX A

WELL NUMBERING SYSTEM

The well numbers used in this report are in accordance with the Bureau of Land Management's system of land subdivision. The land survey in Arizona is based on the Gila and Salt River meridian and base line, which divide the state into four quadrants. These quadrants are designated, counter-clockwise, by the capital letters A, B, C, and D. All land north and east of the point of origin is in quadrant A; all land north and west of the origin is in quadrant B; all land south and west is in quadrant C; and all land south and east is in quadrant D. The first digit of a well number indicates the township, the second digit the range, and the third digit the section in which the well is located. The lowercase letters a, b, c, and d after the section number indicate the well location within the section. The first letter denotes a particular 160-acre tract or quarter section; the second letter denotes the 40-acre tract or quarter-quarter section; and the third letter denotes the 10-acre tract or quarter-quarter-quarter section. These letters are also assigned in a counter-clockwise direction, beginning in the northeast quarter. As Figure A-1 shows, well number (A-1-1)8baa designates the well as being located in the Northeast 1/4, Northeast 1/4, Northwest 1/4, Section 8, Township 1 North, Range 1 East. Where more than one well is located within a 10-acre tract, consecutive numbers beginning with "1" are added as suffixes.

For this investigation, additional well identifiers enclosed in brackets are added as suffixes, as is shown on Figure 1. The additional well identifiers HS-1, HS-2, and HS-3 are used to identify monitor wells located at the Hassayampa Landfill.

GILA AND SALT RIVER

B

BASE LINE \

c

z «t o E Ul

z a: Ul > CE

l -- 1 < OT

a z <

< - I

R.IW./

\ (

\ \

V

6

S

4

3

2

^ t 3i ' 1

N R . I E .

•\

z 3 -» 5 6

;• \

^

\ \

WELL ( A - I - I ) 8 b a a

6

7

18

19

3 0

31

S

V 17

2 0

29

32

,y 9

16

21

2B

33

y 3

10

IS

22

27

34

2

II

14

23

26

39

1

12

13

24

29

36

1 1

1

1

-H 1

1

— (

1

1 1

1 ) — 1 —

1

1 — L _ e

1

1 —

1 1

1 c

1

1

1

— 1 — c

1

1 1 1

1

1

1

FIGURE A - 1 . WELL NUMBERING DIAGRAM

ERROL L. MONTGOMERY A ASSOCIATES, INC. CONSULTANTS IN HVDROOSOLOOV

TUCSON, ARIZONA

-a

I—I

X

CO

APPENDIX B

RESULTS OF TV VIDEO SURVEYS

Figure

B-1

B-2

B-3

RESULTS OF TV VIDEO SURVEY FOR MONITOR WELL (C-l-5)3daa[HS-l]

RESULTS OF TV VIDEO SURVEY FOR MONITOR WELL (C-l-5)3dac[HS-2]

RESULTS OF TV VIDEO SURVEY FOR MONITOR WELL (C-l-5)3ddal[HS-3]

BUCK WEBER & ASSOCIATES, INC.

T.V. VIDEO SCAN REPORT

rn.tnmpr WiARICOPA COUNTY

Location MARICOPA-HASSAYAMPA LANDFILL

n.tp APRIL 1 , 1 9 8 7

,„H^ 0 2 - 8 7 2 1

Well # HS-1

Citv HASSAYAMPA

r..P?;i.P 3 - 7 / 8 " I . D .

County MARICOPA State ARIZONA

Liner Size N /^

ROTARY _Orig. Depth 8 8 ' Cur. Deoth 8 8 ' S.W.L. 7 1 . 9 ' Type Hole

Reference RyiFRRni, MONTnOMFPY FNOTNFFRTNO PO # RTT.L VTCTOR

From TOP OF PIPETo BOTTOM TOP OF PIPE BOTTOM

.At CONT Intervals Tvoe Drive MONITOR

CONT.

Results NO STRUCTURAL DAMAGE,SOME DRIFT IN

WELL FROM 3 0 ' TO BOTTOM.

Recommendations

Signed. d ^ r - r . ^ . - ^ .

Type Perf. H O R Z . S L O T S

Frnm 8 3 - Tn 8 8 '

X

71 . 0 -S.W.L.

Breaks or

Collapse

NONE FIII

Bottom .asj

FIGURE B-1. RESULTS OF TV VIDEO SURVEY FOR MONITOR WELL (C-l-5)3daa[HS-l]



Cuunmer MARICOPA COUNTY

Location MARICOPA-HASSAYAMPA LANDFILL.

n.te A P R I L 1 . 1 9 8 7

. inh# 0 2 - 8 7 2 2

Well # H S - 2

Citv. HASSAYAMPA

Case Size 3 - 7 / 8 "

County MARICOPA state A R I Z O N A

Liner Size n / h

Type Hole. ROTARY _Orig. Depth 1 0 7 ' Cur. Depth 1 0 8 . 7 ' S W l 7 7 - 1 '

Reference Bv: ERROL MONTGOMERY ENGINEERING P.O. # BILL VICTOR

From TOP OF P I P E T O BOTTOM At CONT. intervals Type Drive MONITOR

Results NO STRUCTURAL DAMAGE.SEVERE DRIFT

IN UPPER PORTION OF P I P E . AIR BUBBLES Type Perf.

HORZ.SLOTS

ENTERING WATER THROUGH PERFORATIONS. FromlZJ_ T o l ^ Z l /V^^-v*^^v^^*"

Recommendations

Signed y ^ K ^ z : ^ ^ ^ ^.^g_

t^î»%A/SV'./\/\A., V > ^ - |

Botf&m

77.1 ' S.W.L.

Breaks or

Collapse

NONE Fill

107'

FIGURE B-2. RESULTS OF TV VIDEO SURVEY FOR MONITOR WELL (C-l-5)3dac[HS-2]



Customer.

Location

MARICOPA COUNTY

MARICOPA-HASSAYAMPA LANDFILL.

n..te APRIL 1 .1987

, „ , ^ 02-8723

Well # HS-3

City. HASSAYAMPA County MARICOPA state ARIZONA

Case Si7e 3 - 7 / 8 " I . D . . Liner Size N/A

Type Hole. ROTARY _Orig. Depth. 9 8 ' Cur. Depth 9 8 . 9 ' S W l . 7 3 . V

Reference Rv: ERROL MONTGOMERY ENGINEERING p.p. # BILL VICTOR

From TOP OF PI PETO BOTTOM At CONT. intervals Tvoe Drive MONITOR

Results NO STRUCTURAL DAMAGE,SLIGHT DRIFT

IN UPPER PORTION OF PIPE,SLIGHT AMOUNT

OF AIR BUBBLES ENTERING WATER THROUGH

PERFORATIONS.

Type Perf. HORZ.SLOTS

Frnm 6 1 ' J , j Q ^

Recommendations

H.^*V».'^V*^*/W.v.«^-A*'

Bottom

7 3 - 5 ' S.W.L.

Breaks or

Collapse

NONE Fill

98'

FIGURE B-3. RESULTS OF TV VIDEO SURVEY FOR MONITOR WELL (C-l-5)3ddal[HS-3]

• a -a n 2 :

I—I X

o

I I I I I I I I I

APPENDIX C

LITHOLOGIC DESCRIPTION FOR DRILL CUTTINGS

Figure

C-l LITHOLOGIC DESCRIPTION FOR DRILL CUTTINGS FROM MONITOR WELL (C-1-5)3daa[HS-l] (FROM ARIZONA DEPARTMENT OF HEALTH SERVICES, 1985)

B C-2 LITHOLOGIC DESCRIPTION FOR DRILL CUTTINGS FROM MONITOR WELL (C-1-5)3dac[HS-2] (FROM ARIZONA DEPARTMENT OF HEALTH SERVICES, 1985)

I C-3 LITHOLOGIC DESCRIPTION FOR DRILL CUTTINGS FROM MONITOR WELL (C-1-

5)3ddal[HS-3] (FROM ARIZONA DEPARTMENT OF HEALTH SERVICES, 1985) C-4 LITHOLOGIC LOG FOR SOIL BORING (C-l-5)3dad[HW-B-l] (FROM ERTEC

WESTERN, INC., 1982]

C-5 LITHOLOGIC LOG FOR VADOSE ZONE MONITOR WELL (-l-5)3dda2[HW-B-2] (FROM ERTEC WESTERN, INC., 1982)

C-6 LITHOLOGIC LOG FOR VADOSE ZONE MONITOR WELL (C-l-5)3dbd[HW-B-3] (FROM ERTEC WESTERN, INC., 1982)

A n . sons bepsrtaenc oi neaxi;n o e m c e a Bureau of Waste Control LOO or TEST HOLtS

Siting Area ^ ^ ^ ^ ^ „ ^ ^ Tn.'S»nif nry ( a n d f i U

Ha$$avampa-Hazardou$ Waste Section

A.L. Roesler OATt

g/?i/ni OHaDNO CQUirutNT

Hayhew 1000-Rotory Drill Rlq

HOLC

UG-1

•TAl*

•uitrAcc ILCVATION

915.7

1

Hole Depth

Prom Pt.

0

5.0

7.0

13.0

14.0

15.0

18.5

19.5

25.0

To Pt.

5.0 •

7.0

13.0

14.0

15.0

18.5

19.5

25.0

47.0

t •

' •'Maricopa I 1

^.ponsor „,,^„p, Co. Hiqhway Deot. *'*" AZ

'"'"'•**"'Hassayampa Monitoring Well Installation

lOCAIION or MOUS f ^ Corner, Cast of Pit 3, 10' from fence

OtSCmPTTON or MATCRULt

Brown slltv gravelly ?and w/cobbles, drv, vp.ry

dense, little to moderate cementation

Brown silty clay, dry, brittle and friable.

w/callche nodules and moderate caliche cementation

Reddish brown clayey sand, dry, moderate caliche

cementation, root voids common

Grayish brown silty sand. dry. firm

Brownish gray silty sand w/flne gravel, dry, loose

Gray gravelly sand w/gravel stringers and lenses.

dry, loose

Gray sand, dry, loose

Brown clayey sand w/hard caliche lenses, dry.

very dense and difficult to excavate

Jrown gravelly silty sand, w/scattered cobbles.

Iry. moderate cementation

U S C

s *;«

CL

SC

SM

SP-

SP

SP

5C

SM

Standard Penetration Test Oata "N" Rlftw?

SH

tAMPlt* j

1 TYTC

rnOM' TO Inc.

rr. ' rr. % COMMEHT

1

I . DISTURBCIMINOItTURBIO-IIOClt COKC

FIGURE C-la.

t . COARSC MATCRIAI. KCMOYCD 1. rCRCCNT SAMPLE RCCOVtRY

LITHOLOGIC DESCRIPTION FOR DRILL CUTTINGS FROM MONITOR WELL (C-l-5)3daa[HS-l] (FROM ARIZONA DEPARTMENT OF HEALTH SERVICES, 1985)

•Hter 1 or y »Hiri

AriBona Department of Health Sendees Dureau of Waste Control t o o or I tST HOLtS

S i t i n g Area

iccAnoN

ICCCtO BY OATE

CmilllNQ IQUIPMENT

MOtt

\r,.\

• •

S T A : *

•UHfACt

mVATIOM

•

1

.

Hole ^ Depth Prom

P t .

47.0

55.0

68.0

76.0

101.0

111.0

To —Et*.

65.0

68.0

•

76.0

101.0

U l . O

120.0

i ; i t y / C o u n t y

i ip ona o r

|«JTt»«».

t l A T l

rnoitcT:

tOCATION o r MOLES

MscHtpnoN or MATCMIAIS

Brown ^ i l t v l c l a v . w/abundant cal iche cementation.

l i t t l e to no qravel

Black basal t , hard; may be a combination of

cemented cobbles and boulders as in a fanglomerate

along wi th seams of f low mater ia l .

Red sandy s i l t , w/scattered s i l t s tone seams •

Reddish brown c lay , w/scattered zones of gravel

as str ingers or lenses, wet

Reddish brown clayey gravel ly sand, saturated.

w/abundant f i ne gravel

Reddish brown s i l t y gravel ly sand, w/abundant -

angular to subrounded gravel , saturated.

Water Table 9 68.65' 9/24/81 •

\

•

u s c

CL

.

ML

CL

SP-

SP-

Standard 'enetrat ion Test Oata - t t " p l nw«

SC.

SM

u u n t t 1

nrf f r»ovl TO es t

rr. 1 rr.

1 1

% COMMENT

1

•

I . OtSTUMBnMJNOttTUBBRMtOCIt COBC

FIGURE C-lb.

I . COAItSC MATtDMl MtMOVtO J. f cRcerrr t A u n c Ricovtirr

LITHOLOGIC DESCRIPTION FOR DRILL CUTTINGS FROM MONITOR WELL (C-l-5)3daa[HS-l] (FROM ARIZONA DEPARTMENT OF HEALTH SERVICES, 1985)

•MttT or j M t r s

Arizona Dspartment of Heallh Services ftireau of Waste Control LOC or TEST HOLtS

Siting Area Maricopa County Sanitary Landfill ICCATION

Hassawamoa-Hazardous Waste Section

A.L. Roesler ""'9/23/81

Mayhew 1000-Rotary Drill Rig

NOtt

IM

oe-2

.

BTALA

BUHrACt

tlCVATION

915.5

,

t

»

Hole Depth

Prom Pt.

0

2.0

52.0

67.0

To Pt.

2.0

52.0

67.0

111.0

tity/County ISITIHO. Marlcooa 1 2

oponaor ^^^^ôp, county Hiqhway Dept. *'*" Arizona"

Hassayampa Monitoring Well Installation LOCATION or MOLf s

Southern boundrv. across frran Ward Rd

DfSCBirnoN or MATCMUIB

Fill - silt, sand and 9ravel. drv, loose

Brown gravelly silty sand, w/thin seams of slltv

clay and clayey sand and stringers of sandy silt to

gravelly sand, dry, firm to dense

Black basalt; probable intercalated layers or

ieds of basaltic flow material, breccia,

agglomerate, cemented volcanic ash, and fanglomerate

:onsist1ng of caliche cemented basalt gravel.

:obbles and boulders; formation is very dense and

frilled slow but fairly smooth

led sandy silt, low plasticity, w/very fine to

Lo fine sand seams and scattered silty clay

stringers; scattered cemented fragments appear as

;1milar to siltstone; scattered cobbles throughout.

•

U S C

SM

.

L

Standard fenetration Test Oata "M- Rlnw«

SAMPltS 1

1

r rn rirou' TO

n. ' rr.

1

C.C

« COMMEHT

•

t . OlSTUBBtlMmtNtTUBBCtMIOeitCORC

FIGURE C-2a.

I . COAirSt WATtmAl BtMOVtO I . rCBCENT SAMPlC BECOVERV fMin or SHtri

LITHOLOGIC DESCRIPTION FOR DRILL CUTTINGS FROr-i MONITOR WELL (C-l-5)3dac[HS-2] (FROM ARIZONA DEPARTMENT OF HEALTH SERVICES, 1985)

Bureau of Wast e Control LOC o r TEST HOLES .

Si t ing Area ICCATtON

t e e s t o BY V

OATE

O m i U N O EOUll>MENT

NOlC M A

nfi.?

•

.

BT«:&

BunrACC

ClCVAnON

1

Hole Depth

From P t .

i i i . n

.

•

To _ P t .

120.0

•

t l l y / C o u n t y

Sponsor

I t i : : NO.

• » A I E

PROJECT:

lOCATIOM o r HOLES

eESCRimoN or MATCRUIB

Brown s i l t y gravel ly sand, w/abundant angular to

subrounded f i ne qravel. Water table 9 66.11'

9/24/81 24 hours af ter d r i l l i n g

•

•

•

•

U [standard S Penetration C

SP

Test Data "N» Rlnwc

SM

.

SAMPl tS

TYPE 'ROM* TO

rT. 1 rr.

L —

1

1

est.

H

COHHENT

I . 0(STURBEDmNDf<TURBCO4IOCK CORE 1 COARSC MATCRIAI REMOVCD I . PERCENT SAMPLE RECOVERY SHEET o r SMirrs

FIGURE C-2b, LITHOLOGIC DESCRIPTION FOR DRILL CUTTINGS FROM MONITOR WELL (C-l-5)3dac[HS-2] (FROM ARIZONA DEPARTMENT OF HEALTH SERVICES, 1985)

jureo

Sitim

u ur Hasce ConT;r01 LOC OF TEST HOLES

* *"• Maricooa Co. Sanitary landfill

Hajsavamoa-Hazardous Waste Section

"*""•' A.L. Roesler I"" 9/24/81 ORiiiiNBcouiPMENT^^^^ lOOO-Rotary Drill Rig

NOtC

NO.

W-3

.

•unrACC

tVCVATTON

010 4

1

Hole ^ Depth Proa Pt.

9

Z,0

39.0

68.0

89.0

104.0

112.0

TO Pt.

?.o

39.0

68.0

89.0

104.0

112.0

120.0

^"y^^°""'^y Maricopa ^ " ^ 3 kiponsor siATE

Marlcooa Co. Hiohwav Oeot. AZ PROJECT: ( jjjjyj j Monitoring Well Installation LOCATION or MOLES 5^ ^ ^ ^ ^ ^ ^

DCSCRtPTION or MATCRIAU

Fill, consisting of silt, sand and gravel

Brown silty sand, dense, well cemented w/caliche,

cobbles and hard caliche cementation * 25.0'

Black basalt, hard; fanglomerate w/c411che .

cementation appears to be dominant in the upper

Interval; small percentage of quartz and rhyolite

grains noted in cuttings

led sandy silt, low plasticity, w/very fine to

fine sand; scattered cemented fragments have the

sppearance of siltstone; w/scattered cobbles

Brown to red silty clay w/scattei-ed cobbles;

water bearing formation •

Brown clavev fine sand, soft

Brown silty qravelly sand, w/anqular to subrounded

fine gravel abundant. Water table 9 71.2' 9/25/81

U S C

SM

.

ffl.

:L

SP-

SP-

Standard Penetration Test Oata "N" Rlnw«

.

SC

SM

-

SAMPLES

1 TYPE

FROM' TO

rr. I rr.

'

1 1

CSC.

« COMMENT

18 hours after drilling 1. OltTURBCO-UWrnTURBCfMIOCK CORC i . COARSC MATCRtAL REMOVCO I . PERCENT SAMPLE RECOVERY SHEET 2 or 2 SMErS

FIGURE C-3. LITHOLOGIC DESCRIPTION FOR DRILL CUTTINGS FROM MONITOR WELL (C-l-5)3ddal[HS-3] (FROM ARIZONA DEPARTMENT OF HEALTH SERVICES, 1985)

A - 1

H i t

0 -

, SAUPLC r v p c

p f N C I R A l l O H O E N S l l V RfSlSTAHCC UOlStURC C O N S l S U N C v

I

.^, c

I

^

10-

15-

20-

25-

30-

35-

18

22

52

70

81

Slightly Moist

Medium OenM

Yellow Brown

SANO AND GRAVELLY SANO (SP-SM). tubangular to subrounded, fine to couns; variable gravel content up to 20%; gravel to ) t " recovered; weakly cemented below about 20 feet.

Very Dense

TQTAL DEPTH 30 FEET

ELEVATION: 908FEET OATE ORILLEO: 12/8/81

EQUIPMENT USED; 7" HOLLOW STEM AUGER WATER LEVEL; N O T ENCOUNTERED

a STAHOinO S P l l l SPOON S A M P l t A D m OENSIIY ILO/Cu F I I

lASTM D I S a « l

[ o ] CRTCC I I ' I " ORIVI SAMPtC

[ a ] SULK S A u p i c

m THIN w i l l TuaC SAMPIE l A s i u o i s t r i

riELO MOiSTunc i%on> M I I IAS1U D77I6I

NH HO nccovEov

ÊrtBC m . g . » f c i ^ M i . t , c . t . M.I

HASSAYAMPA WfASTE/ PIPELINE STUDY

LOG OF BORING HW-B-I

Pro|.ct numbw 78-056-05 202. s Ertec

FIGURE C-4. LITHOLOGIC LOG FOR SOIL BORING (C-l-5)3dad[HW-B-l] (FROM ERTEC WESTERN,.INC., 1982)

A-2

F i l l

0 -

SAMPLE I YPE

P E N C i n A r i o N o E N S i i v f nESISIANCE UQISIURE CONSlSIEMCt

o Ca

,^

10-

15-

20-

Slightly Moist

52

23

59

84

Very Dense

Light Brown

CUYEY SANO (SC), fine to medium, medium plasticity; weakly cemented; trace of fine gravel.

Medium Dense

Red Brown

SANO AND GRAVELLY SANO (SW-SM), fine to course; weakly cemented below about 12 feet; some gravel to 3/8" recovered.

Very Dense

)

25—

30-

35—

TOTAL DEPTH 20.0 FEET

ELEVATION: 912FEET OATE DRILLED: 12/8/81 EQUIPMENT USED 7" HOLLOW STEM AUGER WATER LEVEL NOT ENCOUNTERED

S S T A N O A N O S P l l l SPOON SAMPLE A ODV DENSIIV ILO/CII F I I

lASIV l O t S t t I

[ o ] tRTCC J I O " DRi» t SAMPLE

[ a ] BULK SAMPLE

m l M N O A l l l ueE SAMPLE l A S H t O I M M

FIELO MOISTURE t « ORT W i t l A S I M o i r i s i

NR NO RECOVEHV

Ê r tEC HASSAYAMPA WASTE/ PIPELINE STUOY

LOG OF BORING HW-B-2

Pfoi .et f iumb.# 76-OM-OS 1/B?

s ErtEC

FIGURE C-5. LITHOLOGIC LOG FOR VADOSE ZONE MONITOR WELL (C-i-5)3dda2[HW-B-2] (FROM ERTEC WESTERN, INC., 1982)

A - J

FCEI

0-

-SAMPLE ITPE

P C N E I R A I I O N nEHSiivi KESlSIAHCE HOISIURE CONSISIEHCf

10

- • -70

— I — .0

- t -

a.

' V ,

>

M

Vl

I

\

-I

10-

15 —

20—

25 — • ^ F

30-

35-

21

70

Slightly Moist

Stiff To Hard

Light Brown

SANDY CLAY-CLAYEY SANO (CL-SC). medium plasticity, predominantly fine sand size.

Medium Dense

Brown SILTY SANO (SM). fine weakly cemented.

Hard Red Brown

SANDY CLAY-CUYEY SAND (CL-SC), medium plasticity, fine to coana sand s i l l . tracB of gravel to 3/8" recovered; moderately to strongly cemented; layer of silty sand (SM) at 22' to 24*.

Very Dense

TOTAL DEPTH 23.7 FEET

(-o ELEVATION: 916FEET DATE DRILLED: 12/8/81 EOUIPMENT USED: 7" HOLLOW STEM AUGER WATER LEVEL: NOT ENCOUNTERED

a STANOARO SPLIT SPOON SAMPLE A DRT OEHSITV ILO'CU F Tl

lASTM D i s a a i

f p ] E K T t C I I ' J " DRIVE SAMPLE

( T ) »UIK SAMPLE

Q IHIN HALL lUaE SAMPLE lASTM O I M T I

A FIELD MOISTURE 1% D R f W I I ^ lASTM D l l l t l

NR HO RECOVERf

SsErtBC HASSAYAMPA WASTE/ PIPELINE STUOY

LOG OF BORING HW-B-3

P f o | « c t n u m b w 76 0 S « - O 5 >/»?

a Ertec

FIGURE C-6. LITHOLOGIC LOG FOR VADOSE ZONE MONITOR WELL (-l-5)3dbd[HW-B-3] (FROM ERTEC WESTERN, INC., 1982)

Documents

ERROL L. MONTGOMERY & ASSOCIATES, INC, · rience with similar sediments in the Salt River Valley, we ... Analyze several reports and documents to obtain ... with field personnel responsible