EDER ASSOC PC - INTERIM REMEDIAL ACTION ON-SITE GROUND … · 2020. 9. 9. · eder associates environmental scientists and engineers September 20, 1994 File #497-14 Ms. Eugenia Chow,

• .•'• rtL" u :

STATUS REPORTINTERIM REMEDIAL ACTION

ON-SITE GROUNDWATERNATIONAL PRESTO INDUSTRIES, INC. SITE

EAU CLAIRE, WISCONSIN

eder associatesenvironmental scientists and engineers

1 eder associates

NATIONAL PRESTO INDUSTRIES, INC.EAU CLAIRE, WISCONSIN

STATUS REPORTINTERIM REMEDIAL ACTION

ON-SITE GROUNDWATERNATIONAL PRESTO INDUSTRIES, INC. SITE


PROJECT #497-14SEPTEMBER 1994

SEP 2 1 1994

Office Location: Office Contact:EDER ASSOCIATES William M Warren201 South Main StreetAnn Arbor, Michigan 48104 (313)663-2144

Offices in New York, Wisconsin, Michigan, Georgia, Florida, and New Jersey

09/20/M

eder associatesenvironmental scientists and engineers

September 20, 1994File #497-14

Ms. Eugenia Chow, P.E.USEPA, Region VWaste Management Division77 W. Jackson Blvd., HSRW-6JChicago, IL 60604-3590

Re: Status Report, Interim Remedial Action,National Presto Industries, Inc. Site,Eau Claire, Wisconsin

Dear Ms. Chow:

This Status Report provides United States Environmental Protection Agency (USEPA) andWisconsin Department of Natural Resources (WDNR) with our evaluation of the effectivenessof the Interim Remedial Action (IRA) On-Site Groundwater, at the National Presto Industries(NPI) Site, Eau Claire, Wisconsin.

The IRA is effectively preventing the off-site migration of VOCs at the Melby Road DisposalSite and the southwest portion of the NPI site. No modifications to the IRA are recommendedat this time.

As discussed in our letter of March 4, 1994, the sampling program and schedule will be evaluatedin early October when the September sampling results are available.

Please advise if you have any questions or comments.

Very truly yours,

EDER ASSOCIATES

William M. WarrenVice President

WMW/lsc

201 SOUTH MAIN STREET, ANN ARBOR, MICHIGAN 48104 • (313) 663-2144 • FM (313) 747-6530

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CONTENTS

LETTER OF TRANSMITTAL

EXECUTIVE SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-1

1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1 Description of the Interim Remedial Action . . . . . . . . . . . . . . . . . . . 11.2 IRA Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.3 Capture Zone Analysis and VOC Plume Monitoring . . . . . . . . . . . . . 41.4 VOC Concentration Trends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

>

2.0 CONCLUSIONS AND RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . 7

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TABLES

No. Description1 VOC Removal Efficiency2 Monitoring Well VOC (ng/£) Data3 Monitoring Well VOC (îg/£) Data4 VOCs ( / f ) in Extraction Wells

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FIGURES

No. Description1 Water Table Map August 24-25, 19942 Water Table Map August 24, 19943 TCA Gxg/£) Isoconcentration Map January 31-February 2, 1994 (Baseline)4 TCE (ng/f) Isoconcentration Map January 31-February 2, 1994 (Baseline)5 TCA (ug/f) In Groundwater June 6-9, 19946 TCE (ug/f) In Groundwater June 6-9, 19947 TCA (ug/0 Isoconcentration Map February 8-10, 1994 (Baseline)8 TCE (ug/£) Isoconcentration Map February 8-10, 1994 (Baseline)9 TCA (ug/£) In Groundwater June 6-9, 199410 TCE (ug/f) In Groundwater June 6-9, 199411 EW-1 VOC Data12 EW-2 VOC Data13 MW-5A VOC Data14 MW-5B VOC Data

15 MW-6 VOC Data16 MW-9A VOC Data17 MW-9B VOC Data18 MW-62A VOC Data

19 MW-62B VOC Data20 MW-62C VOC Data21 MW-63A VOC Data22 MW-63B VOC Data23 MW-64A VOC Data24 MW-64B VOC Data

25 MW-64C VOC Data26 MW-65A VOC Data

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FIGURES (Continued. . .)

27 MW-65B VOC Data28 MW-65C VOC Data29 MW-66A VOC Data30 MW-66B VOC Data31 MW-66C VOC Data32 EW-3 VOC Data33 EW-4 VOC Data34 MW-4A VOC Data35 MW-4B VOC Data36 MW-10A VOC Data37 MW-10B VOC Data38 MW-23A VOC Data39 MW-23B VOC Data40 MW-34A VOC Data41 MW-34B VOC Data42 MW-39A VOC Data43 MW-39B VOC Data44 MW-67A VOC Data45 MW-67B VOC Data

46 MW-68A VOC Data47 MW-68B VOC Data48 MW-69A VOC Data49 MW-69B VOC Data50 MW-70A VOC Data51 MW-70B VOC Data52 MW-71A VOC Data53 MW-71B VOC Data

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EXECUTIVE SUMMARY

The Interim Remedial Action (IRA) has been operating for six months (March throughSeptember 1994) at the National Presto Industries, Inc. (NPI) site in Eau Claire, Wisconsin.Water table maps were prepared to evaluate the effectiveness of the four IRA extraction wellsin preventing the off-site migration of VOCs. The capture zones at the southwest portion ofthe NPI site and Melby Road Disposal Site adequately span the VOC plume at each area.

VOC data for March through June 1994 have been compared to baseline sampling data forJanuary through February 1994 for each IRA area. VOC isoconcentration maps for TCA andTCE show the plumes are spanned by the capture zones of the extraction wells. VOCmaximum contaminant levels (MCLs) are not exceeded off site downgradient of the MelbyRoad Disposal Site or the southwest portion of the NPI site.

ES-1

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1.0 INTRODUCTION

The IRA for on-site groundwater at the NPI site in Eau Claire, Wisconsin, has been inoperation for six months. This report presents data on the effectiveness of the IRA from startup in early March 1994 through June 1994.

The IRA operation and monitoring procedures were slightly modified from the final designreport by mutual agreement with NPI, USEPA, and WDNR before implementation. Thesemodifications consist mainly of changes in monitoring well sampling schedules and analyticalmethods. Extraction well pumping rates have also been adjusted in response to wellperformance. These modifications have been documented in the monthly IRA progressreports to USEPA and WDNR.

1.1 Description of the Interim Remedial Action

The remedy selected by the USEPA and WDNR (Record of Decision, September 30, 1991)consists of plume containment at the Melby Road Disposal Site and the southwest portion ofthe NPI site, which is the area downgradient of Lagoon No. 1 and Ditch No. 3. The on-site

VOC plumes in groundwater at these locations contained volatile organic compounds (VOCs)in excess of the federal MCLs for TCE (southwest portion of the NPI site) and PCE, TCAand 1,1 DCE (Melby Road Disposal Site). The MCLs for these VOCs are the same as theWisconsin MR 140 Enforcement Standards.

The IRA at the Melby Road Disposal Site and the southwest portion of the NPI site includestwo groundwater extraction wells at each location. The locations and pumping rates of theextraction wells were based on groundwater modeling conducted during the remedial design.

The groundwater capture predictions made by the model were confirmed by aquifer pumpingtests and water level measurements. Extracted groundwater from the two locations is piped

497-14001 1 09/20/94

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to their respective cascade aerators located near the existing NPI storm sewer. Cascadeaeration reduces the concentrations in the extracted groundwater prior to discharge.

The treated water is discharged to the city of Eau Claire storm sewer system at theintersection of Hallie Lane and Locust Lane. This part of the city storm sewer systemdischarges to the Chippewa River at an outfall west of the intersection of Riverview Driveand Marquette Street/Welsh Drive. The city outfall was modified to divert the flow from theNPI site to a new outfall extended into the river and equipped with diffusers. This dischargemeets the substantive conditions of a WPDES permit.

The extraction well system at the Melby Road Disposal Site consists of two 5-inch diameter>

wells (EW-1 and EW-2) which were installed in 1987. These wells were equipped withpumps in July 1991. Each extraction well and associated valves and meters are enclosed bya pump house. EW-1 and EW-2 began pumping on March 8, 1994, at 90 gpm each. Therecovered groundwater pumped to a cascade aerator near the NPI storm sewer. The treatedgroundwater discharges to the NPI storm sewer and flows into the city of Eau Claire stormsewer at the intersection of Hallie Lane and Locust Lane.

Two 6-inch diameter extraction wells (EW-3 and EW-4) were installed at the southwestportion of the NPI site and began pumping on March 2, 1994. Each extraction well andassociated valves and meters are enclosed by a pump house. The wells are locateddowngradient of Lagoon No. 1 and Ditch No. 3 and are intended to contain the VOC plumein that area. The recovered groundwater is pumped to a cascade aerator which discharges the

treated groundwater to the same NPI storm sewer receiving treated groundwater from EW-1and EW-2. This flow, combined with the flow from the cascade aerator serving EW-1 andEW-2, discharges to the city of Eau Claire storm sewer system at the intersection of HallieLane and Locust Lane.

09/20/94

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Recovered and treated groundwater discharged to the city storm sewer flows to the modifiedcity outfall west of the intersection of Riverview Drive and Marquette Street/Welsh Drive.The city engineer, Brian Amundson, was consulted on storm sewer capacities during ameeting with Eder staff on December 6, 1991. The flow from the NPI recovery system islow (less than 1 cfs), but precautions have been taken to prevent any overflow problemcaused by the reduction in pipe capacity resulting from NPI's discharge. A flow controldevice was installed in the city storm sewer pipe downstream of the Eddy Lane/Abby Hillintersection. This device consists of a float level in the pipe which transmits a radio signalto a control switch on the recovery well pumps. Any significant rise in the water level inthe pipe activates the control switch and turns off the recovery wells. The extraction wellsare also automatically turned on when the water level in the pipe recedes. The initialincrement of water level rise in the storm sewer pipe was set at 50 percent of the pipecapacity. This level was established in consultation with Eau Claire Public Works Director,Mr. William Bittner, on June 18, 1992. This setting is conservative and has been monitoredduring the Interim Action.

The operating time logs (chart recorder) and water level measurements in monitoring wellsnear extraction wells are used to determine if the recovery systems are effectively containingthe plumes. These data are submitted to USEPA and WDNR in the Interim Action Progressmonthly reports and will be summarized in annual reports for the first three years of systemoperation. If the effectiveness of the plume containment systems is significantly compromisedby the on-off cycling of the pumps, system modifications will be evaluated and implementedto ensure proper system operation. A significant compromise of the system is preliminarilydefined as any pumping interruption longer than six hours which occurs more than onceduring a three day period. During the first six months of operation, one shutdown period ofone hour occurred on April 24, 1994, and two 15-minute shutdowns occurred on September15, 1994. The system is working according to plan.

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1.2 IRA Operation

The current pumping rates for EW-1 and EW-2 are 100 gpm and 80 gpm, respectively, at theMelby Road Disposal site. These wells are being pumped at their maximum rates for theavailable drawdown and pump size. At the southwest portion, EW-3 and EW-4 are currentlypumped at 70 and 130 gpm, respectively, which are also their maximum rates. There havebeen no extended pumpage shutdowns, and all pumps and meters are working withoutproblems.

The cascade aerators have been exceeding the minimum removal efficiency of 30 percent.Table 1 shows the influent and effluent VOC concentrations for each cascade aerators. Therehave been no operational problems.

1.3 Capture Zone Analysis and VOC Plume Monitoring

Water table maps (Figures 1 and 2) have been prepared showing the changes in groundwaterflow directions induced by the pumping wells. The flow direction changes prevent the off-site migration of the VOC plume. This is accomplished by stagnating groundwater andpumping from this zone, resulting in a capture zone. Two wells at each area were requiredto prevent off-site migration.

Figure 1 shows that the capture zone is about 500 feet wide, spanning the width of the entireMelby Road Disposal Site, as measured perpendicular to groundwater flow. The estimatedextent of the downgradient (off-site) flow reversal is about 200 to 300 feet. The area ofpumping influence is consistent with the high permeability of the sand and aquifer whichresults in a broad, shallow cone of depression.

Figure 2 shows an even wider capture zone in the southwest portion of the NPI site. Thetotal pumpage (205 gpm) from EW-3 and EW-4 is higher than the 170 gpm total for EW-1

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and EW-2, and the capture zone is about 600 feet wide. The difference is caused in part bythe presence of the sand and gravel aquifer boundary about 300 feet upgradient of EW-3, nearmonitoring wells MW-34A,B. The boundary condition causes more flow from the east to bediverted toward the pumping wells. This allows the extraction wells to capture groundwaterflow from Lagoon No. 1 area as well as the Ditch No. 3 area.

TCA and TCE concentrations in groundwater were used to prepare baseline (pre-IRA) andfirst quarter isocontour maps for each area. Baseline VOC data were collected for thesouthwest portion of the NPI site monitoring wells from January 31 to February 2, 1994. TheMelby Road Disposal Site monitoring wells were sampled from February 8 to 10, 1994. TheVOC analyses were done by HES Laboratories using low level GC/MS methods. The resultswere validated by Eder Associates, and the raw data and validation report were submitted toUSEPA and WDNR.

At the southwest portion of the NPI site, baseline TCA and TCE isoconcentration maps areshown on Figures 3 and 4. Figures 5 and 6 show TCA concentrations for June 6 to 9, 1994,after three months of pumping EW-3 and EW-4. The TCA and TCE maps show that theextraction wells are strategically located to pump the VOC-contaminated groundwater andprevent migration around their pumpage influence.

Baseline TCA and TCE isoconcentration maps are shown on Figures 7 and 8 for the MelbyRoad Disposal Site. After three months of pumping EW-1 and EW-2, downgradient off-site

monitoring wells have shown TCA decreases which are reflected on the isoconcentration mapsby the collapse of the isocontours back toward the pumping wells. The TCE data are shownon Figure 10. Isoconcentrations are not shown because there was only one detection of 2ug/£ at monitoring well MW-65C.

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1.4 VOC Concentration Trends

Figures 11 through 31 show VOC concentrations at EW-1, EW-2, and monitoring wells atthe Melby Road Disposal Site for March through June 1994. Decreases in TCA and 1,1 DCAhave occurred at EW-1, EW-2, and MW-5A, which is located between the two extractionwells. TCA and 1,1 DCA concentrations have also decreased at downgradient MW-6 andMW-9A (off-site). Based on the June 1994 results, there are no exceedances of MCLs forVOCs at the Melby Road Disposal Site for TCA and TCE. PCE concentrations are slightlyabove the MCL (5 ug/f) at MW-5A where it has been 7 to 8 ug/£. The VOC data are inTable 2.

EW-3 in the southwest portion of the NPI site has shown a decrease in TCA through July1994 (Figure 32), while EW-4 TCA levels a decreased from 24 ug/£ to 11 ug/£ by April andthen an increase to 34 ug/£ in June 1994 (Figure 33). TCE decreases occurred at MW-70A,upgradient of EW-3, from a prepumping concentration of 36 ug/f to 14 ug/f in June 1994.VOC plots for all wells in the southwest portion of the NPI site are shown on Figures 32 to53 and the data are summarized in Table 3. Extraction well VOC concentrations are in Table4.

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2.0 CONCLUSIONS AND RECOMMENDATIONS

The IRA extraction well pumpage has created capture zones that prevent off-site migrationof the VOC plumes at the Melby Road Disposal Site and the southwest portion of the NPIsite. VOC isoconcentration maps show some improvement in groundwater quality during thefirst three months of the IRA. No MCLs are being exceeded at the Melby Road DisposalSite, except for PCE at 7 to 8 ug/£ at MW-5A. TCE concentrations in the southwest portionof the NPI site exceed the MCLs upgradient of the extraction wells at MW-70A, MW-34A,and between EW-3 and EW-4 at MW-11. All of these monitoring wells are within thecapture zone of the extraction wells.

No changes in the operation and monitoring of the IRA system are recommended at this time.The complete 6-month set of VOC data will be available in October 1994, when theSeptember sampling results are expected. At that time, the VOC results and anyrecommended changes in the monitoring program and schedule will be submitted to USEPA.

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INTERIM REMEDIAL ACTION


TABLE 2

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MONITORING WELL VOC (us/t) DATA

MELBY ROAD DISPOSAL SITE

Well ID

MW-5A

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-5B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-6

1. 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-9A

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-9B

1, 1 - DCE

1, 1 - DCA

Baseline

2/8-10/94

2

110

290

0.9

8

0.4

3

28

ND

0.6

ND

0.8

23

ND

0.3

1

0.1

60

ND

0.1

ND

ND

Round 1

3/28-31/94

<5.0

89

190

<5.0

7.3

< 1.0

3.1

24

< 1.0

< 1.0

< 1.0

< 1.0

7.4

< 1.0

< 1.0

< 1.0

< 1.0

25

< 1.0

< 1.0

< 1.0

< 1.0

Round 2

6/6-9/94

<5.0

71

150

<5.0

7

< 1.0

1.5

7.1

< 1.0

< 1.0

< 1.0

< 1.0

8.2

< 1.0

< 1.0

< 1.0

< 1.0

34

< 1.0

< 1.0

< 1.0

< 1.0

Table 2 Continued. . .

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Well ID

1, 1, 1 - TCA

TCE

PCE

MW-62A

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-62B

1, 1 - DCE

•1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-62C

1, 1 - DCE

1, 1 - DCA

1, 1, I - TCA

TCE

PCE

MW-63A

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-63B

1, 1 - DCE

1, 1 - DCA

1, I, 1 - TCATCE

PCE

MW-64A

Baseline

0.8

0.1

0.04

ND

22

120

0.3

0.9

0.3

19

34

0.2

1

ND

0.2

1

O.I

0.09

0.6

79100

0.4

3

ND

2

6

0.08

0.2

Round 1

3.8

< 1.0

< 1.0

<2.5

21

99

<2.5

<2.5

< 1.0

17

29

< 1.0

1.3

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

10

17

< 1.0

< 1.0

< 1.0

< 1.0

3

< 1.0

< 1.0

Round 2

4.3

< 1.0

< 1.0

<2.0

19

120

<2.0

<2.0

< 1.0

13

19

< 1.0

< 1.0

< 1.0

< 1.0

3.2

< 1.0

< 1.0

< 1.0

26

49

< 1.0

1.7

< 1.0

3.3

10

< 1.0

< 1.0

497-14001 09/20/94


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Well ID

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-64B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-64C

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-65A

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-65B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-65C

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

Baseline

ND

ND

2

0.05

ND

ND

ND

0.6

0.3

0.04

ND

ND

0.2

0.5

0.04

ND

ND

0.1

0.02

ND

ND

ND

0.2

0.4

ND

ND

0.4

0.7

2

ND

Round 1

< 1.0

< 1.0

2.1

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

1.6

< 1.0

Round 2

< 1.0

< 1.0

1.7

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

2

< 1.0


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Well ID

MW-66A

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-66B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-66C

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

Baseline

0.6

9

60

0.4

0.2

3

76

140

0.4

2

ND

0.5

1

0.1

ND

Round 1

< 1.0

5.2

37

< 1.0

< 1.0

< 1.0

19

42

< 1.0

< 1.0

< 1.0

< 1.0

2.2

< 1.0

< 1.0

Round 2

< 1.0

8.9

49

< 1.0

< 1.0

1.2

27

46

< 1.0

1.4

< 1.0

< 1.0

2

< 1.0

< 1.0

NOTES:

ND Not detectedN Result negated during data validation< 1.0 Not detected at 1.0 pg/t detection limit1. I - DCE 1, I - Dichloroethene1, 1 - DCA 1, I - DichloroethaneI, 1, 1 - TCA 1, I, 1 - TrichloroethaneTCE TrichloroethenePCE Tetrachloroethenc

09/20/94


INTERIM REMEDIAL ACTION .EAU CLAIRE, WISCONSIN

TABLE 3

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MONITORING WELL VOC (ue/n DATASOUTHWEST PORTION OF THE NPI SITE

Well ID

MW-4A

1, 1 - DCE

1, 1 - DCA

1, 1, I - TCA

TCE

PCE

MW-4B

1, 1 - DCE

l.l-DCA

I, 1, I - TCA

TCE

PCE

MW-10A

1, 1 - DCE

1, 1 - DCA

I, 1, 1 - TCA

TCE

PCE

MW-10B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-23A

1, 1 - DCE

1, 1 - DCA

Baseline

1/31-2/2/94

0.2

6

26

0.8

0.3

ND

ND

0.09

0.1

ND

ND

4

5

O.I

0.07

ND

0.02

0.04

0.03

ND

0.3

2

Round 1

3/28-31/94

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

2.1

4.1

< 1.0

< 1.0

< 1.0

4.1

7.5

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

2

Round 2

6/6-9/94

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

1.2

7.6

58

5.6

< 1.0

< 1.0

3.7

3.5

< 1.0

< 1.0

< 1.0

2.2

< 1.0

< 1.0

< 1.0

< 1.0

2.5

497-14001


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Well ID

1, 1, 1 - TCA

TCE

PCE

MW-23B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-34A

1, I - DCE

1. 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-34B

1, 1 - DCE

I, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-39A

1. 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-39B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-67A

1, 1 - DCE

Baseline

16

1

ND

0.7

5

16

2

0.4

0.04

4

5

8

0.9

ND

1

1

0.05

0.2

ND

ND

0.2

0.2

N 1

N 1

ND

0.2

0.08

N 1

0.07

Round 1

18

1.5

< 1.0

< 1.0

3.5

28

1.8

< 1.0

< 1.0

3.3

4.9

11

< 1.0

< 1.0

8

1.8

1.2

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

Round 2

37

2.7

< 1.0

< 1.0

1.9

17

1.1

< 1.0

< 1.0

4.5

5.3

12

< 1.0

< 1.0

1.9

2.1

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0


eder associates

Well ID

1, 1 - DCA

1, 1, 1 • TCA

TCE

PCE

MW-67B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-68A

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-68B

1, 1 - DCE

\, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-69A

!, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-69B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-70A

1, 1 - DCE

Baseline

5

18

10

0.9

ND

0.2

0.4

0.7

0.04

ND

ND

0.1

1

0.03

ND

1

3

6

0.2

ND

0.1

0.4

0.4

N 1

ND

0.3

0.6

0.4

N 1

0.05

Round 1

1.6

5

18

< 1.0

< 1.0

< 1.0

< 1.0

5.1

< 1.0

< 1.0

< 1.0

< 1.0

1.5

< 1.0

< 1.0

< 1.0

1.3

2.4

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

Round 2

< 1.0

1.6

11

< 1.0

< 1.0

< 1.0

< 1.0

1.2

< 1.0

< 1.0

< 1.0

< 1.0

1.1

< 1.0

< 1.0

1.3

3.7

2.7

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

2.2

< 1.0

< 1.0

< 1.0


eder associates

Well ID

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-70B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-71A

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCA

TCE

PCE

MW-71B

1, 1 - DCE

1, 1 - DCA

1, 1, 1 - TCATCE

PCE

Baseline

2

5

36

0.4

ND

0.07

0.1

1

0.02

ND

0.5

1

0.2

0.2

N 1

0.2

1

0.4

0.2

Round 1

3.9

8.2

49

1.3

< 1.0

< 1.0

< 1.0

2.8

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

Round 2

2.5

3.4

14

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

< 1.0

NOTES:

Not detectedResult negated during data validationNot detected at 1.0 ng/f detection limitI, I - DichloroetheneI, 1 - Dichloroethane1, 1, 1 - TrichloroethaneTrichloroetheneTetrachloroethene

497-14001

eder associates


INTERIM REMEDIAL ACTION ON-SITE GROUNDWATER


TABLE 4

VOCS (ue/f) IN EXTRACTION WELLS

Date

03/03/94

03/09/94

03/17/94

03/23/94

03/31/94

04/06/94

VOCs

TCA

TCE

DCA

PCE

TCA

TCE

DCA

PCE

TCA

TCE

DCA

PCE

TCA

TCE

DCA

PCE

TCA

TCE

DCA

PCE

TCA

TCE

DCA

PCE

Metby Road

EW-1 EW-2

(Not On)

95

.

42

-

75

-

31

2.3

68

-

35

2.2

64

-

30

2.0

58

-

27

-

65

-

34

2.5

48

-

24

2.2

45

-

25

-

47

-

28

1.9

37

-

23

1.7

Southwest Portion

EW-3

18

3.7

7.1

-

12

7.2

4.2

-

12

9.7

3.6

-

10

9.7

3.7

-

9.4

9.3

3.4

-

8.9

9.7

3.3

-

EW-4

24

-

7.4

-

19

-

5.0

-

16

-

4.4

-

12

-

4.6

-

11

-

4.1

-

11

1.1

4.1

-


eder associates

Date

05/04/94

06/09/94

VOCs

TCA

TCE

DCA

PCE

TCA

TCE

DCA

PCE

Melby Road

EW-1

50

-

22

-

32

-

15

1.3

EW-2

37

- •

18

1.4

27

.

12

1.1

Southwest Portion

EW-3

7.3

7.7

2.7

-

5.4

5.9

2.0

-

EW-4

21

2.3

5.6

-

34

2.3

4.4

•

IIIIIIIIIIIIIIIIIII

eder associatesFIGURE i

&UW-63824.71'

IBr ROAD'SAL A

824:57

EW-1

LEQBO—— NPI Property Line

Monitoring Well W/Numberand Water Level Elevation

Extraction Well W/Number

-825'- Water Table Contour W/Elcmtion

Groundwater Flow Direction

Capture Zone Width

SK497BCT091994

' ApproxtmoteScale In Fxt

WATER TABLE MAPAUGUST 24-25. 1994

MELBY ROAD DISPOSAL SITENATIONAL PRESTO INDUSTRIES, INC. SITE

EAU CLAIRE. WISCONSIN

IIIIIIIIIIIIIIIIIII

eder associatesFIGURE 2

LEGEND•—— ——— ——— NPI Property Line

UW-34 @B 9 Monitoring We/IW/Woter Level Elev

PW-I& UST Monitoring WellW/Woter Level Elev.

EW-3$) Extraction WellW/Woter Level E/ev.

B26.0'—————— Water Table ContourW/Elevation

Groundwoter flowDirection

-| Capture Zone Width

WATER TABLE MAPTUGUST 24. 1994

SOUTHWESTERN PORTION OF NPI SITENATIONAL PRESTO INDUSTRIES, INC. SITEINMI1U EAU CLAIRE. WISCONSIN

eder associateFIGURE :

tLEOBC

—— ——————— NPI Property Lint

UW-34 A.B 9 Monitoring mil With5;1 TCA Concentration

(Shallow And Deep)

RW-2 A.B.CV

-20

5) USEPA Monitoring Well(Not Monitored)

9 UST Monitoring Well(Not Monitored)

$> Extraction Well

— TCA IsoconcentrationContour Line

-\ Capture Zone Width

NOTE-Extraction Wells HadNot Started PumpingAt Time Of Sampling.

TCA (ug/1) ISOCONCENTRATIONMAP JANUARY 31-FEBRUARY 2

1994 (BASELINE)SOUTHWESTERN PORTION OF NPI SITE

NATIONAL PRESTO INDUSTRIES. INC. SITEEAU CLAIRE. WISCONSIN

IIIIIIIIIIIIIIIIIII


LEQBC——— ——————— NPI Property Line

HW-34 A,B 9 Monitoring Well With5;1 TCE Concentration

(Shallow And Deep)

RW-2 A.B,C(S) USEPA Monitoring Well^ (Not Monitored)

PW-19 UST Monitoring Well(Not Monitored)

EW- J C> Extraction Well

•10 ——— TCE IsoconcentrationContour Line

—————| Capture Zone Width

NOTE'

Extraction Wells HadNot Started PumpingAt Time Of Sampling.

TCE_Jug/l) ISOCONCENTRATIONJANUARY 31-FEBRUARY 2.

1994 (BASELINE)SOUTHWESTERN PORTION OF NPI SITE

NATIONAL PRESTO INDUSTRIES, INC. SITEEAU CLAIRE, WISCONSIN

IIIIIIIIIIIIIIIIIII


tLEOBP

——————— NPI Property Line

W-J4 A.B 9 Monitoring Well With5.3;21 TCA Concentration

(Shallo* And Deep)

RW-2 A,B.C<( USEPA Monitoring Well(Not Monitored)

PW-tO UST Monitoring Well(Not Monitored)

EW-J ® Extraction Well With5.4 TCA Concentration

-25- TCA IsoconcentrotionContour Line

Capture Zone Width

TCA (ug/1) IN GROUNDWATERJUNE 6-9. 1994

SOUTHWESTERN PORTION OF NPI SITENATIONAL PRESTO INDUSTRIES, INC. SITE

EAU CLAIRE, WISCONSIN-


LEQBC—— NPI Property Line

UW-34 A.B 9 Monitoring Well With^2:<^ TCE Concentration

(Shallow And Deep)

RW-2 A.B.C®) USEPA Monitoring Well(Hot Monitored)

PW-1& UST Monitoring Well(Not Monitored)

EW-3 © Extraction Well With5.9 TCE Concentration

-10- TCE IsoconcentrationContour Line

Capture Zone Width

Approximot*Sc<H« In F««t

TCE fug /I) IN GROUNDWATERJUNE 6-9. 1994

SOUTHWESTERN PORTION OF NPI SITENATIONAL PRESTO INDUSTRIES, INC. SITE



MW-5 A,B290; 28

EW-1

— 100 -

S497UAZ091B9«

LEGEND—— NPI Property Line

Monitoring Well WithTCA Concentration(Shallow And Deep)

Extraction Well

TCA Isoconcentrotion Contour Line

Capture Zone Width

Extraction Wells Had Not StartedPumping At Time Of Samp/ing.

TCA (ug/n ISOCONCENTRATION MAPFEBRUARY 8-10. 1994 (BASELINE)



IIIIIIIIIIIIIIIIIII


-6J A,B.4;.08

MELBY ROADDISPOSAL AREA


MW-5 A.BQ.9;<2

EW-1 €>

Monitoring Well WithTCE Concentration(Shallow And Deep)

Extraction Well

Capture Zone Width

NOTE:

Extraction Wells Had Not StartedPumping At Time Of Sampling.

S*97UB*091694

TCE (ug/1) CONCENTRATION MAPFEBRUARY_8-10. 1994 (BASELINE)



!l


MW-5150; 7.1

32

-100 -

S49714AV091694


Monitoring Well WithTCA Concentration(Shallow And Deep)

Extraction Well WithTCA Concentration

TCA Isoconcentration Contour Line

Capture Zone Width

TCA (ug/1) IN GROUNDWATERJUNE 6-9. 1994



IIIIIIIIIIIIIIIIIII


MW-8&

64 A.B.C 9<1;<1;<1

9MW-9 A,B

<1;<t

\

LEQBO—— NPI Property Line

MW-5 A,BQ Monitoring Well WithTCE Concentration(Shallow And Deep)

Extraction Well WithTCE Concentration

Capture Zone Width

NOTBTCE Was Detected Only InMonitoring We/I MW-65 C (2 ug/l).

ICE (ug/l) IN GROUND WATERJUNE 6-9. 1994



Concentration (ug/l)

8W

Hn

HOW

W

W£o

Cfl

1

B.IJIInV)

Q.0)~iCU

28W


O)

c0

0)OcOO

200 -r

190 -180 --170 --160 --150 --140 --130 --120 --110 --100 --90 --80 --70 --60 --50 -40 --30 --20 :-10 --0 :-

EW-2 VOC DataInterim Remedial Action

National Presto Industries, Inc. Site

Eau Claire, Wisconsin

3/3/94 3/9/94 3/17/94 3/23/94 3/31/94 4/6/94 5/4/94 6/9/94 7/6/94

1,1 - DCE -ffl-1,1 - DCA 1,1,1 - TCA TCE PCE


300

250 --

O) 200 -

.g"(U 150

0)OcOO 100 -

50 -

0

MW-5A VOC DataInterim Remedial Action



2/8-10/94 3/28-31/94 6/6-9/94

1,1 - DCE -EH, 1 - DCA 1,1,1 - TCA -H- TCE PCE

200

O)13

.9.Vi-jE*t—>c0)OOO

190 -180 --•170 -160 --150 --140 --•130 -120 -110 -100 --•90 -80 -70 -

eder associatesFIGURE H

MW-5B VOC DataInterim Remedial Action



2/8-10/94 3/28-31/94 6/6-9/94

*1, 1 - DCE -ffl- 1, 1 - DCA -4-1,1,1 -TCA-I1- TCE -I-PCE


MW-6 VOC DataInterim Response Action


Eau Claire, Wisconsinzuu -1 f\t\lyO -1 Of\18U -1 »7/\17U -

160 -150 -

.140 -"3)130 -^ _ i <%/\"— ' 12U -

g 110 -•*-• - ~«CO 100 -^^^J***^ f\f\c 90 -0 80O T A70 -0 ,n 160 -

50 -40 -30 -*^(\20 -

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-••--•-•-;--••-•••••"-•-•--••---•-•————————— [fl [g — — M

2/8-10/94 3/28-31/94 6/6-9/94

*1, 1-DCE -ffl-1, 1-DCA -A- 1.1,1 -TCA fl- TCE -X-PCE

Do

Hn

Hnm

sm

Concentration (ug/l)o o o o o o o o o o o o o o o o o o o o o

-+-H—I—I——!—I——!—| ' | ' ! ' I—I—! ' I ' !—H^—^

00

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MW-9B VOC DataInterim Response Action


Eau Claire, Wisconsinzuu -1901 Of\180 -170 -160 -150 -

140 -*0)130 --— - 1 in• IzU -g 110 -"co 100 -^ j^ * s\f\c 90 -0 80 -0 70 -0 ,ftoU .-

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2/8-10/94 3/28-31/94 6/6-9/94

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190180170160150

£-sl40"B)130120g 110TO 100^ 90O 80O 70O

504030

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MW-62A VOC DataInterim Response Action



2/8-10/94 3/28-31/94 6/6-9/94

*1, -DCE *1, 1 - DCA -A- 1, U -TCA-I1- TCE *PCE





oo

190 -180 --170 --160 --150 --

^140 -0)130 --^120 -fg HO -"(0 100 --il 90 --O 80 4-

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50 --40 --30 :-20 --10 --0

2/8-10/94 3/28-31/94 6/6-9/94

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£\JV -i nr\lyO -1 or\ISO -1 1(\170 -160 -150 :

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2/8-10/94 3/28-31/94 6/6-9/94

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2/8-10/94 3/28-31/94 6/6-9/94

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130 --120 -110 -100 --90 --80 -70 --60.--50403020100





2/8-10/94 3/28-31/94 6/6-9/94

*1, 1 - DCE -ffl-U -DCA -A- l, 1, l -TCA-f1- TCE -X- PCE





2/8-10/94 3/28-31/94 6/6-9/94

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MW-66C VOC DataInterim Response Action



zuu -190 -1 Of\loO -1 "7H1 /U -160 -150 -

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50 -40 -30 -"tr\2.\J -

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n .2/8-10/94 3/28-31/94 6/6-9/94

+,, 1-DCE -ffl- 1, 1 - DCA -A- i, i, 1 -TCA-1-- TCE -*- PCE

Concentration (ug/l)K)

z:&.i!IB1oGO

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EW-4 VOC DataInterim Remedial Action



3/3/94 3/9/94 3/17/94 3/23/94 3/31/94 4/6/94 5/4/94 6/9/94 7/6/94

*1, 1 - DCE -EB-U-DCA -A- 1.1, 1 - TCA -I3- TCE -X- PCE

190 -180 -

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1/31-2/2/94 3/28-31/94 6/6-9/94

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2001901801701601501401301201101009080706050403020100




1/31-2/2/94 3/28-31/94 6/6-9/94

*1, 1 - DCE -ffl- 1, 1 - DCA -A- 1,1,1 -TCA- •H- TCE -1- PCE


MW-IOA VOC DataInterim Response Action


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Documents

EDER ASSOC PC - INTERIM REMEDIAL ACTION ON-SITE GROUND … · 2020. 9. 9. · eder associates environmental scientists and engineers September 20, 1994 File #497-14 Ms. Eugenia Chow,