CH2M HILL INC - THOMAS SOLVENT GROUND WATER … · groundwater extraction - well treatment system monitoring report by ch2m hill june 1988. ... abbreviation ccl4 ccl3 1.1-dca

*0 000 20 5

THOMAS SOLVENT RAYMOND ROADGROUNDWATER EXTRACTION

- WELL TREATMENT SYSTEMMONITORING REPORT

byCH2M HILL

June 1988

CONTENTS

INTRODUCTIONSystem OverviewGroundwater Monitoring ProgramData LimitationsObjectives of this Report

EXTRACTION WELLSSystem DescriptionExtraction Well ContaminantsPerformance of the Extraction Wells

CARBON ADSORPTION SYSTEMDescription of the Carbon SystemPerformance of the Carbon System

AIR STRIPPERDescription of the Air StripperAir Stripper Performance

SUMMARY AND RECOMMENDATIONSSummaryRecommendations

BIBLIOGRAPHY 6-1

Appendix A.Appendix B.Appendix C.Appendix D.Appendix E.Appendix F.

Extraction WellsCarbon Adsorption UnitsAir StripperData LimitationsSampling Point Concentration DataOperating Day Table

111

GLOSSARY OF COMPOUND ABBREVIATIONS

Compound

Carbon Tetrachloride

Chloroform

1.1-Dichloroethane

1.2-Dichloroethane

1,1-Dichloroethylene

Cis-1,2-Dichloroethylene

Trans-1,2-Dichloroethylene

Methylene Chloride

Tetrachloroethylene

1,1,1-Trichloroethane

Trichloroethylene

Vinyl Chloride

Benzene

Ethylbenzene

Toluene

o-Xylene

Abbreviation

CCL4

CCL3

1.1-DCA

1.2-DCA

1,1-DCE

CIS/TRANS

MECL

PCE

1,1,1-TCA

TCE

VINYL

BEN

EBEN

TOL

0-XYL

Note: Above compounds are priority pollutants tested for atthe TSRR facility.

CVR169/013

INTRODUCTION

Section 1INTRODUCTION

The Verona Well Field is an EPA Superfund site on the Na-tional Priority List. The well field supplies potable waterto approximately 35,000 residents and commercial and indus-trial establishments of the City of Battle Creek, Michigan.In August 1981, it was discovered that a number of privateand city wells in the well field were contaminated with vol-atile organic compounds (VOCs). Subsequent testing revealedthat nearly one-half of the city's 30 potable water wellswere contaminated. A bottled water program was institutedfor the area residents by the EPA until an alternative watersupply system could be constructed.

In the fall of 1983, CH2M HILL began a remedial investigationto determine the extent and potential source(s) of the wellfield contamination. The investigation revealed a contami-nant plume with VOC concentration varying from 1 microgram/liter to 100 microgram/liter in the area of the well field.The plume was steadily moving north and northwest towardsless contaminated wells. The investigation also revealedthree major sources of contamination: the Thomas SolventCompany's Raymond Road (TSRR) facility, the Thomas SolventCompany Annex at Emmett Street, and the Grand Trunk WesternRailroad Marshalling Yard. Figure 1 shows the location ofthese sources relative to the well field.

The Thomas Solvent Company operated a solvent distributionbusiness, which also handled a variety of liquid industrialwastes. The facilities were used for the storage, transfer,and packaging of chlorinated and nonchlorinated solvents.Investigation at the sites determined that contaminationresulted from tank leakage and surface spillage.

In May 1984, EPA signed a Record of Decision (ROD) to imple-ment an Initial Remedial Measure (IRM). As part of the IRM,CH2M HILL designed and constructed a series of blocking wellsto prevent further migration of the contaminated plume, andan air stripping system to remove VOCs from the contaminatedgroundwater. In addition, CH2M HILL installed 3 new potablewater wells to supplement the city's water supply system.

In 1985, EPA signed another ROD that addressed the TSRR fa-cility, the most severely contaminated of the three sources.The ROD specified a corrective action that includes a networkof groundwater extraction wells to remove contaminated ground-water, the treatment of groundwater via air stripping, and asoil vapor extraction system to remove VOCs from the unsat-urated zone.

1-1

GRANDTRUNK WESTERNRAILROADMARSHALLINGYARD

THOMASSOLVENTRAYMONDROADFACILITY

/ ' -THOMAS/ ' SOLVENT

FIGURE 1VICINITY MAP

SYSTEM OVERVIEW

The Thomas Solvent Raymond Road groundwater extraction sys-tem removes VOC-contaminated water from the aquifer in thevicinity of the TSRR facility. The system (see Figure 2)consists of nine groundwater extraction wells, associatedinstrumentation and controls, approximately 5,200 feet ofextraction force main (EFM), and a carbon treatment systemthat temporarily serves as pretreatment for the existing airstripper. The carbon pretreatment system will be removedwhen the total VOC concentration is low enough for the airstripper alone to meet National Pollutant Discharge Elimina-tion System (NPDES) permit requirements for discharge toBattle Creek River.

Contaminated groundwater is delivered from the TSRR facilityby the extraction force main, which is routed west alongEmmett Street, as shown in Figure 2, and then north alongBrigden Drive to the air stripping system installed by EPAin 1984. Flow from the extraction force main can dischargedirectly to the stripper pump station (wet well) or can bediverted for pretreatment in the temporary carbon adsorptionsystem.

A flow schematic of the system is shown in Figure 3. Eightof the nine extraction wells discharge between 30 and 70 gpmof contaminated groundwater; the other well (EW-1)discharges 5 to 7 gpm.

The carbon adsorption system consists of three pressure car-bon units (one in parallel with two in series) located adja-cent to the air stripper. Following treatment from the car-bon adsorption units, the water is discharged to the airstripper pump station (wet well).

VOC-contaminated groundwater from the Verona Well Field block-ing wells (approximately 2,000 gpm) also discharges into thewet well along with the TSRR extraction well flow (approxi-mately 400 gpm). From the wet well, the water is pumped toan air stripper, which removes more than 95 percent of theVOCs from the water. VOCs removed from the water by the airstripper are adsorbed from the stripper offgas by a vapor-phase activated-carbon system.

GROUNDWATER MONITORING PROGRAM

TREATMENT SYSTEM SAMPLING

As discussed above, the groundwater treatment system consistsof: a set of three aqueous phase carbon filter canisters,an air stripping tower, and a pair of vapor phase carbonfiltration canisters. The extraction well water is passedin series first through the carbon canisters, then through

1-3

^

EXTRACTION FORCEMAIN PIPE TOTREATMENT SYSTEMAT VERONA WELL FIELD

LEGEND

A EXTRACTION WELL LOCATION

• EWJ —— PIPE ROUTING FROM EXTRACTIONWELL fl (TYPICAL)

EXTRACTION FORCE MAIN

MCCBUILDING

EXTRACTION WELLLOCATION. TYPICALOF 9

. GROUNDWATER\EXTRACTtON WELL

ÎPE. TYPICAL

\r~~-FENCEUNEMONITORING ^\,BUILDING X

\

\

STORAGEBUILDING

OFFICEBUILDING

FIGURE 2TSRR GROUNDWATEREXTRACTION SYSTEM

U \MDUST\WM47I \SCHntOWG

EW1

WS1

SINGLE CARBONADSORPTION UNIT

WS4

WS2TWO CARBON ADSORPTIONUNITS IN SERIES

EXTRACTIONFORCEMAIN

TO VAPOR-PHASECARBON

FROM BLOCKINGHELLS

SAMPLING POINTS ANDIDENTIFICATION NUMBER

TO BATTLECREEKRIVER

MM47I.OF

RQURE3GENERAL FLOW SCHEMATIC

1the air stripping tower. The sampling ports are located at ]various points on the system. To collect a sample, a valve 'was opened at each sample port and a small amount of waterwas discharged to clean the lines. The sample bottles were 1filled directly from the faucet.

The treatment system samples were generally analyzed for EPAMethods 601 and 602 purgeable organic target compounds, eitherby the NUS Mobile Laboratory or the NUS Laboratory ServicesGroup facility in Pittsburgh, Pennsylvania. Periodic anal-yses were performed for Napthalene (EPA Method 610) , Acetone(EPA Method 656) , and methyl ethyl ketone and methyl isobutylketone (Methods 8015/8030) . Samples were also analyzed forNPDES Priority Pollutants semi-annually.

Treatment system sampling was done on a schedule determinedby the MDNR.

Sample bottle requirements for these samples have been asfollows:

Methods 601/602 - Four 40 ml VGA vials for NUSLaboratory Services Group analysisTwo 40 ml VOA vials for NUS MobileLaboratory analysis

Methods 610, 656, Two 40 ml VOA vials8015/8030 - One 1-liter amber jar

NPDES/Priority Four 40 ml VOA vialsPollutants - Two 1/2 gallon jars

Two 1-liter plastic jarsOne 1-liter glass jar

The sample numbers for these samples are in the followingformat:

VWF-PW-WSx-xx

PW - Purge WaterWSx - Sample port number (WS1-WS7)xx - Sample sequence number

EXTRACTION WELL SAMPLING

Before sampling extraction wells, the sample port was flushedby discharging a small amount of water into a bucket. Thesamples were then collected from the sample ports.

Two 40 ml VOA vials were collected for samples analyzed inthe NUS Mobile Laboratory. Four 40 ml VOA vials were

1-6

collected for samples to be analyzed by the NUS LaboratoryServices Group facility in Pittsburgh, Pennsylvania. Thesamples were analyzed using EPA Methods 601 and 602.

Extraction well sampling was done on a schedule determinedby the MDNR.

The sample numbers for these samples are in the followingformat:

VWF-PW-EWx-xx

PW - Purge WaterEWx - Extraction well number (EW1-EW9)xx - Sample sequence number

SAMPLE HANDLING AND PAPERWORK

All sample bottles were marked with labels showing theproject name, time and date of sample, and sample number.

A chain of custody form also accompanied each sample ship-ment, either to the NUS Mobile Laboratory or to the NUS Lab-oratory in Pittsburgh, Pennsylvania.

Following sample collection, the bottles were places intocoolers for holding. If the NUS Field Laboratory was usedfor analysis, the samples were hand delivered to the trailerand placed into a refrigerator, accompanied by the properpaperwork.

If the samples were collected for analysis by the NUS Lab-oratory in Pittsburgh, Pennsylvanis, they were properly pack-aged for shipment and shipped to the laboratory via FederalExpress.

Copies of the Chain-of-Custody Forms were retained for inser-tion into a sample log book. Sample Log Sheets detailingpertinent monitoring well sampling details and Sample TrackingSheets are also maintained in this book. Examples of theseforms are included in this report.

DATA LIMITATIONS

The sampling and analytical techniques used in monitoringthe operation lacked some of the sophisticated quality con-trol measures normally used in EPA contract laboratory pro-gram (CLP) protocols. This potential limitation on the ana-lytical quality, however, should not have a significantimpact on the overall data analysis or the evaluation ofsystem performance. A more detailed description of per-ceived data limitations is in Appendix D.

1-7

OBJECTIVES OF THIS REPORT

This report examines the performance of the TSRR extractionwell treatment system, focusing on:

o Extraction Well Performance

Rate of change of major contaminant concen-trations in each extraction well during treat-ment system operation

Quantity of VOCs extracted from the aquifer

o Granular Activated Carbon Performance

VOCs removal by granular activated carbonpretreatment

VOC loading on the aqueous phase carbonadsorption system

Adsorption and desorption phenomena

o Air Stripper Performance

Removal efficiency of VOCs with and withoutGAC pretreatment

A comparison of the air stripper actual per-formance to its design performance

Conclusions and recommendations drawn from these examinationsare presented at the end of this report,

CVR169/009

1-8

Section 2______

EXTRACTION WELLS

Section 2EXTRACTION WELLS

SYSTEM DESCRIPTION

The groundwater extraction system includes nine extractionwells. (Well locations are shown on Figure 2.) Table 1lists the pertinent characteristics of each well.

Table 1EXTRACTION WELL CHARACTERISTICS

WellNo.

123456

I*9

WellDiameter(inches)

8888888

248

WellDepth(feet)

3340404040.540404340

ScreenInterval(feet)

13-3020.5-3720.5-3720.5-3720.5-37.520-3720-3712-3620.5-37

TypicalPumpingRate(gpm)

55759373438245060

Extraction Well 8 is a product recovery well with a 24-inchsteel casing. An 8-inch groundwater extraction well is alsolocated within the well.

Initially, the wells were run continually. After 7 weeks ofoperation, however, the flow rates began to drop off in al-most all of the wells. In particular, the capacity ofExtraction Wells (EW) 1, 5, and 7 dropped by more than 50 per-cent. Investigation showed substantial fouling by iron-related bacteria (IRB) and sulfur-related bacteria (SRB).

An acidification/chlorination procedure was developed thatincluded treatment with muriatic acid as an oxidizer, citricacid as a chelating agent (to keep particulates in solution),and intermittent agitation with compressed air. The acidifi-cation was followed by chlorination.

The acidification/chlorination procedure was successful inincreasing the flow rate in EW5 and EW7 to their initialcapacity. However, to prevent occurrence of IRB and SRBfouling, a program for chlorination of all extraction wellswas initiated. In this program, a different extraction well

2-1

was shut down each day while being chlorinated. Therefore,each extraction well was chlorinated two or three times amonth.

EXTRACTION WELL CONTAMINANTS

Figure 4 shows the rate of change of the total volatile or-ganic compounds (TVOCs) in each extraction well from Marchthrough December 1987. [The figure uses both dates and op-erating days (0-300) to identify points in time for the ex-traction system. A table that gives calendar day equivalentsfor operating days is in Appendix F.] The average flowshown at the top of each graph is an arithmetic average of 4months of data collected in May, June,'August, and Septemberof 1987. The flows fluctuated slightly, with standarddeviations ranging from 1.5 gpm for EW1 to 12.5 gpm for EW3.

As shown in Figure 4, the major mass of contamination wasfrom Extraction Wells EW3, EW6, and EW8. The next largestcontributors were EW2, EW4, and EW9, followed by EW1, EW5,and EW7. Concentrations in all but one well showed a generaltrend over the first 2 months of operation of high initialconcentrations, followed by a sharp decrease. The exceptionwas EW2, where concentrations were initially low at approxi-mately 750 ppb and increased to 3,500 ppb after about 45 daysof operation. Concentration in EW2 then decreased steadilyexcept for a September 22, 1987, measurement of about3,500 ppb. The predominant compound driving up the TVOCconcentration at EW2 was tetrachloroethylene (PCE).

A series of graphs representing the concentrations of thepredominant components found in the groundwater from each ofthe extraction wells is in Appendix A. Tables of individualconcentrations for each well are also in Appendix A.

PERFORMANCE OF THE EXTRACTION WELLS

As of December 28, 1987, approximately 153 million gallonsof groundwater containing approximately 6,100 pounds ofTVOCs had been extracted through the groundwater extractionsystem. This estimate of TVOCs removed probably is low,since analyses were run only for priority pollutant VOCs(see the "Glossary of Compound Abbreviations" for a list ofcompounds included in TVOCs). No analyses for total organiccarbon (TOC) or total petroleum hydrocarbons were made onany samples. Furthermore, EW8 also contains a product rec-overy pump, which extracts floating product from the wellinto a storage tank. The product pump has removed approxi-mately 150 gallons, which corresponds to approximately1,200 pounds of additional organics that have been removed.Figure 5 shows the change in concentration of TVOCs for the

2-2

FIGURE 4TVOC CONCENTRATIONS IN EXTRACTION

WELLS (MARCH-DECEMBER 1987)COMBINED EXTRACTION WELLS

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FIGURE 5

COMBINED EXTRACTION WELLSAVERAGE FLOW RATE . 352 GPM

March 4.1987100

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Dec. 28,1987

TIME (DAYS RUNNING)

FIGURE 6

TVOCS REMOVED PER DAY DURING GROUNDWATER EXTRACTION OPERATION

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combined flow from the extraction wells (sampling point wsi,from Figure 3).

Figure 6 shows the rate of extraction of TVOCs with thegroundwater. Each of the points on the figure represents aday for which flow and concentration data were recorded.The mass of TVOCs extracted in a given day was determined asthe product of the combined flow concentration and the totalrecorded flow. The curve shown in Figure 6 represents aleast-squares fit of a logarithmic equation. This curve wasused to estimate the amount of TVOCs removed by the extrac-tion well system during the months for which little processdata was available. The "Combined Extraction Wells" tablein Appendix A shows the mass of TVOCs removed per day by theextraction well system.

Figure 7 shows the cumulative amount of TVOCs removed by theextraction well system. The figure was constructed by inte-grating under the curve shown in Figure 6.

CVR169/033

2-5

Section 3

CARBON ADSORPTION SYSTEM

Section 3CARBON ADSORPTION SYSTEM

DESCRIPTION OF THE CARBON SYSTEM

Bidders were allowed considerable flexibility in their designof the temporary aqueous phase carbon adsorption system.The awarded bid used a system designed by Calgon. The systemwas composed of two parallel trains. One train consisted oftwo units in series, and the other train was a single columnadsorption unit. Each of the units were 10 feet in diameterby 12 feet high, and contained 20,000 pounds of granularactivated carbon. Flow was distributed to provide approxi-mately one-third of the total flow to the single-unit train,and the remaining flow to the train with two units in series.

Calgon selected the configuration based on the followingcriteria:

o The units are a standard size (20,000 pounds ofcarbon per unit).

o An estimated 60,000 pounds of carbon would beneeded to perform the required duty, thereforerequiring three units to avoid onsite carbon stor-age and replacement.

o The 1x2 series-parallel arrangement would providemore flexibility than three units in parallel, andless pressure drop than three units in series. Itwas anticipated that the "lead" unit in the trainof two would be exhausted relatively early andwould be taken offline. The carbon in this leadunit would be replaced if necessary and the unitbrought back online as the "lag" unit in thattrain. This design allowed for continuous treat-ment without downtime for carbon replacement.

PERFORMANCE OF THE CARBON SYSTEM

The carbon units were effective in reducing the influentconcentrations to the air stripper sufficiently to allow thestripper to comply with the NPDES permit.

Figures 8 and 9 show the influent and effluent concentra-tions of TVOCs for the first 300 operating days for both thesingle unit and the two units in series. Plots showing in-fluent and effluent concentrations over time for the indivi-dual components are in Appendix B. Figures 10 and 11 areplots of the TVOCs adsorbed by the carbon units per day.Tables of the concentrations of the influent and effluent of

3-1

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FIGURE 10

TVOCS ADSORBED PER DAY IN THE SINGLE-UNIT TRAIN

March 4, 1987100

June 11,1987200

Sept 19, 1987300

Dec. 28, 1987

TIME (DAYS RUNNING)

CO

oUJ

O

o

FIGURE 11

TVOCS ADSORBED PER DAY IN THE TWO-UNITS-IN-SERIES TRAIN

March 4, 1987,100

June 11,1987200

Sept 19,1987300

Dec. 28, 1987

TIME (DAYS RUNNING)

1the carbon adsorption units for each contaminant tested are Tin Appendix E. '

Figures 12 and 13 show the cumulative mass of TVOCs adsorbed ^by the carbon units. The plots were made by integratingunder the respective curves in Figures 10 and 11. An esti-mated 1,830 pounds have been adsorbed in the single-unittrain and 4,340 pounds in the two-units-in-series train.The combined total is approximately 6,170 pounds of TVOCsadsorbed by the carbon adsorption units. This amount isslightly higher than the amount of TVOCs reported to beremoved with the groundwater. The slight discrepancy isreasonable, however, because the the data is scattered.Furthermore, the high loading shows that the carbon effec-tively adsorbed a majority of the VOCs in the groundwater.

Several compounds began to desorb as the carbon beds beganto load with VOCs. Desorption occurs primarily as a resultof competition between compounds. Every compound has a dif-ferent capacity for adsorption. When the carbon is new, thedifferences in adsorption capacity among the different com-pounds is barely detectable because competition for adsorp-tion sites is minimal. However, as the carbon begins toreach capacity, various compounds begin to compete for theavailable adsorption sites. As a result, weakly adsorbedcompounds are desorbed by competition from the more stronglyadsorbed species.

Markers on Figures 12 and 13 label the points at which dif-ferent compounds began to desorb. Although several of thecompounds desorbed at some point in the operation of thesystem, methylene chloride, vinyl chloride, and 1,2-dichloro-ethane were the only compounds that did so at a substantialrate.

Comparisons of observed capacities with those predicted fromisotherms are presented in Table 2. These comparisons areprovided for various compounds on days when significant de-sorption was first documented (the 28th and 45th days), andon the 78th day, at which point data became too scarce forreliable analysis.

Actual carbon adsorption capacity determined for the indi-vidual compounds was compared with capacities predicted fromisotherms reported by Dobbs and Cohen (April 1980) and Loveand Miltner. Most of the isotherms reported are for singlecontaminants in solution. A growing body of literature deal-ing with modeling adsorption in multicomponent systems isavailable; however, analysis using those models is beyondthe scope of this report.

3-4

2000

03

QUJmcco

C/5

1000

FIGURE 12

TVOCS ADSORBED IN THE SINGLE-UNIT TRAIN

March 4, 1987

100 200

June 11,1987 Sept. 19, 1987

TIME (DAYS RUNNING)

300

Dec. 28,1987

CO

QLUmoco

V)

8

5000

4000

3000

2000

1000

FIGURE 13

TVOCS ADSORBED IN THE TWO-UNITS-IN-SERIES TRAIN

VINYL

March 4, 1987

CCL31,2-11,1-DCECIS/TRANS

100 200

June 11,1987 Sept. 19,1987

TIME (DAYS RUNNING)

300

Dec. 28,1987

NOTE: MARKERS INDICATE APPROXIMATE POINT AT WHICH DESORPTIONOF THE PARTICULAR COMPOUND WAS FIRST DOCUMENTED.

Table 2CARBON ADSORPTION ISOTHERM VALUES

FOR SELECTED COMPOUNDS

Two-Units-in-Series TrainActive

Compound

1,1 -DC A1 , 2-DCACIS/TRANSMECLPCE1,1, 1-TCATCEVINYLTOLTVOCs Adsorbed (kg)

carbonDay28

0.251.114.241.044.373.463.120.554.50

440

loadingDay45

0.331.365.470.936.474.444.160.576.07

582

(mg/g C)Day78

0.481.716.870.7511.16.507.420.6110.2900

Single-Unit

Adsorption(mg/g

Ref. 1

1.83.6

NA/3 . 11.3512.528NA26

TrainActive

Compound

1 , 1-DCA1,2 -DC ACIS/TRANSMECLPCE1,1, 1-TCATCEVINYLTOLTVOCs Adsorbed (kg)

carbonDay28

0.200.993.630.963.533.002.700.494.05

188

loadingDay45

0.271.194.630.895.203.783.530.545.30

245

(mg/g C)Day78

0.381.505.910.749.085.526.290.628.71

378

Adsorption(mg/g

Ref. 1

1.83.6

NA/3 . 11.3512.528NA26

IsothermsC)Ref. 2

7.95.1

11.7/17.0NA14313.256NANA

IsothermsC)Ref. 2

7.95.1

11.7/17.0NA14313.256NANA

Full names are in "Glossary of Compound Abbreviations" on p. v.j"Experimental isotherm results reported by Dobbs and Cohen, 1980(Ref. 1), and Love and Miltner (Ref. 2).

CVR169/012

in January 1988, the concentration in the groundwater ap-peared to be low enough to bypass the activated carbon sys-tem and go directly to the air stripper without violatingeffluent standards.

CVR169/034

3-7

: -.;. ' ••&**$• '-*-3CT Section- 4-

AIR STRIPPER

Section 4AIR STRIPPER

DESCRIPTION OF THE AIR STRIPPER

The air stripper is composed of a single 10-foot-diametertower containing 40 feet of 3-1/2-inch pall ring packing intwo 20-foot sections. The tower is made of fiberglass rein-forced plastic with stainless steel internals, and polypro-pylene packing.

Water enters the top of the tower through a 12-inch headerto a Norton wier-trough distributor. Atmospheric air ispulled upward through the tower counter-current to the direc-tion of water flow. A demister at the top of the tower re-moves entrained droplets from the air prior to discharge tothe vapor phase carbon adsorption units.

The stripper was designed for a nominal rate of 2,000 gpmwith a maximum hydraulic loading of 2,500 gpm. The air flowsystem is sized to deliver 5,000 to 6,000 acfm.

The air stripper is also equipped with a recirculation sys-tem to permit periodic addition of acid or disinfectant tocontrol accumulation of inorganic scale or biological growthon the packing material and internal.

AIR STRIPPER PERFORMANCE

Air stripper performance was monitored as part of the data-taking program. Most of the data was taken while the carbonadsorption pretreatment system was operating. This data isdiscussed below. A single set of data was taken on a daywhen the pretreatment system was being bypassed. This setof data is presented under "Performance Without Pretreat-ment," after the discussion of the larger data set.

PERFORMANCE WITH PRETREATMENT

Air stripper performance is generally reported as removalefficiency in percent. The efficiency is determined by tak-ing the difference between the influent and effluent concen-trations and dividing by the influent concentration.

This definition of performance poses some computational pro-blems, particularly when the effluent concentration is belowthe detection limit. If the detection limit is used as anestimate of the effluent concentration, the computed removalefficiency will understate the stripper performance. Con-versely, if the effluent concentration is assumed to be zero,the computed removal efficiency {100 percent) will overstatethe stripper performance.

4-1

Removal efficiencies are reported in Appendix C for eachcompound and for each day data was available. For thosedata points where effluent concentrations were below de-tection limits, removal efficiency is reported as greaterthan the efficiency computed if the effluent were at thedetection limit. For data where the influent was below de-tection limits, removal efficiency is reported as "NA" (notavailable) .

Table 3 summarizes those data points where both influent andeffluent concentrations were above detection limits . Resultsare reported as the average of such data points for eachcompound and are compared against results predicted by CH2MHILL's air stripping computer program. The number of datapoints used in each average is also reported.

Three compounds (1,2-DCA, CIS/TRANS, and MECL) had more than20 data points that could be used to compute an average re-moval efficiency. All of these averages showed reasonableagreement with predicted results. Thirteen data points wereavailable for 1,1,1-TCA, which showed performance much lowerthan predicted (76 percent versus 99.7 percent). Other re-suits were based on only 1 or 2 data points and showed mixedresults.

PERFORMANCE WITHOUT PRETREATMENT

On November 17, 1987, the carbon adsorption system was takenoff-line, allowing contaminated groundwater to be chargeddirectly to the stripper pump station (wet well) . The bypasswas conducted to see how well the stripper could performwithout pretreatment. Results of this single set of dataare reported in Table 4. Where effluent concentrations werebelow detection limits, results are reported as "greaterthan" as described earlier. Where influent concentrationswere below detection limits, results are reported as NA.

The results agreed reasonably well with predicted values formost of the compounds. However, data for 1,2-DCA and MECLshowed performance below predicted values, and 0-XYL showedperformance above predicted values.

OVERALL STRIPPER PERFORMANCE

Figure 14 shows how the influent and effluent TVOCs concen-trations have changed over time. Influent concentrationshave generally been below 200 ppb. The two high readings inNovember are from the bypass of the granular activated carbonpretreatment system.

CVR169/035

4-2

Table 3AIR STRIPPER PERFORMANCE

WITH PRETREATMENT

Compounds

CCL4

CCL3

1, 1-DCA

1,2 -DC A

1,1 -DCE

CIS

TRANS

MECL

PCE

1,1,1-TCA

TCE

VINYL

BEN

EBEN

TOL

O-XYL

PredictedRemoval

(%)

99.43

80.16

91.78

37.42

99.63

62.92

98.44

72.12

99.25

99.74

97.68

99.99

90.94

94.60

93.06

85.35

ActualRemoval

(%)

66,7

NA

NA

33.7

NA

86. 2a

72.6

NA

76.1

98.6

57.5

NA

NA

96.2

NA

Number ofData Points

1

NA

NA

34

NA

28a

38

NA

13

1

1

NA

NA

2

NA

Results for CIS and TRANS combined.NOTES: Air stripper water flow - 2,400 gpm,NA = Not available.

CVR169/014

Table 4AIR STRIPPER PERFORMANCEWITHOUT PRETREATMENT

Compounds

CCL4

CCL3

1,1 -DCA

1,2-DCA

1,1 -DCE

CIS

TRANS

MECL

PCE

1,1, 1-TCA

TCE

VINYL

BEN

EBEN

TOL

0-XYL

PredictedRemoval

(%)

99.43

80.16

91.78

37.42

99.63

62.92

98.44

72.12

99.25

99.74

97.68

99.99

90.94

94.60

93.06

85.35

Actual InfluentRemoval Concentration

(%) (ppb)

NA

>80.0

>75.0

25.0

NA

86.4

66.7

98.4

>99.0

97.4

NA

>75.0

>83.3

92.1

93.3

ND

5

4

4

1

22

3

61

98

154

NA

4

6

88

15

NOTES: Air stripper water flowon November 17, 1987).NA - Not available.ND = Not detectable.

= 2,400 gpm (from final test

CVR169/010

CONCENTRATION (PPB)

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Section 5

SUMMARY ANDRECOMMENDATIONS

Section 5SUMMARY AND RECOMMENDATIONS

SUMMARY

The TSRR groundwater extraction system has demonstrated thefollowing performance results from its startup in March 1987through December 1987.

EXTRACTION WELLS

o The extraction well (EW) system has removed153 million gallons of VOC-contaminated ground-water containing approximately 6,100 pounds ofTVOCs.

o The combined extraction well concentration hasdecreased from an initial concentration of about19,000 ppb to approximately 2,500 ppb.

o The predominant contaminants by total mass arePCE, CIS/TRANS, TCE, 1,1,1-TCA, and TOL (for fullnames, see "Glossary of Compound Abbreviations" atbeginning of report).

o The major contamination has been from EW3, EW6,and EW8.

CARBON ADSORPTION SYSTEM

o Two trains of aqueous phase carbon totaling60,000 pounds of granular activated carbon haveadsorbed approximately 6,170 pounds of TVOCs.

o The system has served as an effective pretreatmentfor the air stripper unit.

o Desorption of MECL, vinyl, and 1,2-DCA (the resultof competition for adsorption sites) was observedas the carbon began to reach capacity. Detailedanalysis in modeling adsorption of multicomponentsystems was beyond the scope of this report, butmay be pursued by others in the future.

AIR STRIPPER

o Air stripper performance was evaluated both withand without operation of the carbon pretreatmentsystem. With the exception of 1,1,1-TCA/perfor-mance with pretreatment, and 1,2-DCA, MECL, and0-XYL/performance without pretreatment, removalefficiencies appeared to be generally consistentwith those predicted by CH2M HILL's computer model,

5-1

1The air stripper has consistently reduced ground-water concentration of VOCs to levels below thoserequired in the NPDES permit.

RECOMMENDATIONS

We recommend the following for further action:

o Monitoring of the groundwater extraction system1sefficiency should be continued to determine theimpact of the soil vapor extraction system ongroundwater contaminants.

CVR169/036

5-2

Section 6

BIBLIOGRAPHY

Section 6BIBLIOGRAPHY

Dobbs, Richard A. and Jesse M. Cohen. April 1980. CarbonAdsorption Isotherms for Toxic Organics. Municipal Environ-mental Research Laboratory, U.S. Environmental ProtectionAgency. Report Number EPA-600/8-80-023.

Love, 0. Thomas and Richard J. Miltner. Date not available.A Comparison of Procedures to Determine Adsorption Capacityof Volatile Organic Compounds on Activated Carbon. WaterEngineering Research Laboratory, U.S. Environmental Pro-tection Agency.

Crittenden, John C., Paul Luft, and David W. Hand. 1985."Prediction of Multicomponent Adsorption Equilibria in Back-ground Mixtures of Unknown Composition." Water Res., Vol. 19,No. 12, pp. 1537-1548. Pergamon Press Ltd.

Weber, Walter J. (Jr.) and Massoud Pirbazari. April 1982."Adsorption of Toxic and Carcinogenic Compounds from Water."AWWA.

CVR169/037

6-1

ApperuflxA ', , • - - - ' - . •

"' '- .'•-.'•' •' - '

EXTRACTION WELLS

Appendix AEXTRACTION WELLS

This appendix presents:

o Graphs showing the concentrations of the predomi-nant components found in the groundwater from eachextraction well

o Tables listing concentrations of individual con-taminants in each well

o A table entitled "Combined Extraction Wells" (thelast table in the appendix) showing the mass ofVOCs removed each day by the extraction well sys-tem

lw/CVR170/026

A-l

PREDOMINANT COMPONENTS OF EW1

OBO.

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20000

10000

k

B

A

a

A

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0 50 100 150 200

March 4, 1 987 June 1 1 , 1 987 Sept 1 8, 1 987

TIME (DAYS RUNNING)

2000

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* TCE

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March 4, 1987 June 11, 1987 Sept. 18, 1987

TIME (DAYS RUNNING)


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4, 1987 June 11, 1987 Sept 18, 1987

TIME (DAYS RUNNING)


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TIME (DAYS RUNNING)


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6000

4000

2000

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ANS

CA

•IE

—————

S50

March 4. 1987

100 150

June 11,1987TIME (DAYS RUNNING)

200

Sept. 18, 1987

CONCENTRATION (PPB)CONCENTRATION (PPB)

2 M *•• o> oo o 2a O O Q O O 3 M * . o > o o a r oo o o o o o o o o o o o o o oJ o. —————————————————————————————————— ^ a — _____ —————————————————————————————

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C

EXTRACTION WELL 1

EXTRACTION WELL CONCENTRATION DATACONCENTRATION EXPRESSED AS PPB

DAY1681321283542SO77100

CCL4M>NDNDNDNDND218NDNDNDND

OCL3NDNDNDNDNDNDNDNDNDND

113LT

1.1 -DCA26202360229021001930190015501310992899734

1.2-DCA5610298020701720148013001110744704412355

1.1-DCE65.97774ND

55 254.635.138.926.3NDND

CIS/TRANS16900126601100083705910605045103350267019601591

MKL315023901830139010501000618453345196

115LT

FCENDND27851.465.21060118217196129

121LT

1.1.1-TCA3750314028001870130014308817467364691460

ICE32.832

42853

56.874444.384.341

25.480LT

VINYL15800157901130092107450844063305540476026402790

BEN1060930893701

606 5523518451389380287

EBEN35836434332.6ND343ND8.1177174ND

TO.123001205012000890021

84003832

487047102663

o-XYL FLOW fqpm)4324604371050600.9224950889243214ND 4

EXTRACTION WELL 2DAY16a13212835425077100202

CCL4NDNDNDNDNDNDNDNDNDNDND

12LT

CCL33.1NDNDNDNDNDNDNDNDNDND54

1.1 -DCA4.59.27.3

10.811.411.511.115.214.410.614LT13LT

1.2-DCANDNDNDNDND3.212.321.911.19.5NDND

1.1-DCE2.8NDNDNDNDNDNDNDNDNDNDND

CIS/TRANS3548538216025848766438330518745

MECLNDNDNDND

15.025.936.135.324.613.5ND

1127

FCE285870982

10201278161013401850931952592

1877

1.1.1-TCA220336323284

304.62972322441341164720

ICE183290344263

281.633525832316313039

310

VINYLNDNDNDNDNDNDNDNDNDNDNDND

BENND1.31.62.810.816.727.233

26.319.4NDND

EBB4ND2

1.61.84.6

16.75.317.18.5

10.8NDND

TCL24S

22891791852691971818047

o-XYLNDND1.92.33.98.122.128.325.619.2NDND

FLOW (turn}

OFF54

EXTRACTION WELL 3DAY16813212835425077100202

CCL4NDND

1120NDNDNDNDNDNDNDNDND

ecu456ND

1470NDNDNDNDNDNDND61ND

1.1-DCA175230

103017517415814713111793.863

65LT

1.2-DCA23501910216014201250111067172754038918280LT

1.1-DCE37.155.830842

27.1NDNDNDNDNDNDND

CIS/TRANS11000990077007340619049403890414024801830928552

MECL363033502600223016101140594514471256ND

2141

PCE35605213292027802650311026003090360043401303401

1.1.1-TCA81705240496037702810252015002090284022301041384

ICE6640418046SO3230233018601410243046204280715440

VINYLNDNDNDNDNDNDNDND176205NDND

BEN8934611540447

312.925221320424719076ND

EBEN532408

1300295

199.1198210210694568109

63LT

TCL12100804583806370437035503360

19721065601161467

o-XYL675519138037213713221025692774419762LT

FLOW (Qpcnt

8045

EXTRACTION WELL 4


MY16a13212835425077100202

ecuNDND231ND

13.5ND132NDNDNDND

19LT

ecuNDNDNDNDNDND192NDNDND

22LT708

1.1-DCA47.860120NDNDNDNDNDNDNDND28

1.2-DCA108055074625694.761

08.440.718.463ND39

1.1-DCENDND80NDNDNDNDNDNDNDNDND

CIS/TRANS542037502040133075851031934920787.818LT118

MECL24720126495.790.446.630.722

12.2NDND

683

PCE537449333143

129.315683.612135.166.2

ND127

1.1.1-TCA304017201300929640639312375281263138687

ICE19001290971515

347.932818424114610737

466

VINYLNDND

322NDNDNDNDNDNDNDNDND

BEN41920226895.547.423.81615

10.56ND

15LT

EBEN14198145NDNDNDND4.3304.8NDND

TCL8950506036001550

NDNDNDND23486.6NDND

o-XYL17713217313744.744.644.150.610.46.6NDND

FLOW loom)

4330


ecuNDNDNDNDNDND1.6ND

NDND1

ecuNDNDNDNDNDNDNDND

ND2

219

1.1-DCA1.61.3NDNDNDNDNDND

NDNDND

1,2-DCAND1.6NDNDNDND2

ND

NDNDND

1.1-DCENDNDNDNDNDNDNDND

NDNDND

CIS/TRANS116521111

0.6LTNDND

MECLNDNDNDNDNDNDND1.1

NDNDND

PCE12795.283.728.728.237

23.229.1

8.654

1.1.1-TCA86.154.640.617

12.715.7

a10.9

2.426

ICE66.147.844.616.213.316.69

11.2

3.425

VINYLNDNDNDNDNDNDNDND

NDNDND

BENNDNDNDNDNDNDNDND

NDNDND

EBENNDNDNDNDNDNDNDND

NDNDND

TO.2

NDNDNDNDNDNDND

NDNDND

o-XYLNDNDNDNDNDNDNDND

NDNDND

FLOW (qpml

Off37


ecuNDNDNDNDNDNDNDNDNDNOND

69LT

CCL3NDNDNDNDNDNDNDNDNDND

16LT697

1.1-DCA87.566.540.2NDNDNDNDNDNDNDND

54LT

1.2-DCA24915311621414880.210272.941

23.5NDND

1.1-DCENDND

37.7NDNDNDNDNDNDNDNDND

CIS/TRANS37402520144082277254268650651832945121

MECL456372278456

488.721012323179.446.9ND

2200

PCE10600975069705410432035002990359041303470504215

1.1.1-TCA35302360191015301100636740683761670262233

ICE235024002250178012907646798311080768125408

VINYLNDNDNDNDNDNDNDNDNDNDNDND

BEN41422622914071.847

52.338.263.535.8NDND

EBEN2212061981266850

59.44612032 2ND

59LT

TO.37803170296020001100713715679

1550702194ND

o-XYL29928426316347.727.171.660.119516.3ND

51LT

FLOWtoDml

4046

EXTRACTION WELL 7


DAY16813212835425077100202

CCL4ND3.8M>NDNDNDNDNDNDNDND1

CCL31.6NDNDNDNDNDNDNDNDND46

1.1-DCA3.23.12.42.21.51.2NDNDND

0.7LT1

ND

1.2-DCAND5.4NDNDNDNDNDNDNDNDNDND

1.1-DCENDNDNDNDNDNDNDNDNDNDNDND

CISTTRANS211810a54433

1.611

MECLNDNDNDNDNDNDNDND

32.8NDNDND

PCE111

83.777.772.556.154

39.356

32.848.53422

1.1.1-TCA11176.458.942.333.631.226.325.724.617.82925

TCE51.435.531.523

17.720.215.617.81511915

VINYLNDNDNDNO4.5NDNDNDNDNDNDND

BENNDNDNDNDNDNDNDNDNDNDNDND

EBENNDNDNDNDNDNDNDNDNDNDNDND

TCLNDNDNDNDNDNDNDNDNDNDNDND

o-XYL FLOW loom)NDNDNDNDNDNDNDNDNDNDND 20 "ND 31

EXTRACTION WELL 8MY16813212835425077100202

0X4NDNDNONDNDNDNDNDNDNDNDND

CCL347.8306NDNDNDNDNDNDNDNOND

175LT

1,1 -OCA98.613601 .a56.27S.2ND

55.459.6NDNDNDND

1.2-DCA12601950061604

852.4418978548362193NDND

1.1-OCENDNDNDNDNDNDNDNDNDNDNDND

CISTRANS5830395026302200205013101350749410390

166LT135LT

MECL3110253014301050982.6557

1190605355200ND

1520

pee36203920235020005490424062804580I86028102061690

1.1.1-TCA78305780373029003160199033002440170017402409980

TCE91206410408031105230211057703 BOO2380259014981600

VINYLNDNDNDNDNDNDNDNDNDND

MOLTND

BEN715672481

146.6340.4234.6419169124107NDND

EBEN33529417916923512738018510492 2ND

MOLT

TCL80907100511043204480233062403130224021801071

ND

o-XYL38436622022014789

450212143113ND

122LT

FLOW looni}

5051


2002

ecuND

22.2NDNDNDNDNDNDNDNDND

11LT

ecu29.517.5NDNDNDND

13.5NDNDNDND

16LT

1.1 -OCA19.721.111.19.88NOND5.7NDNDNDND

1.2-DCA17910650.371.538.719.912.920.518.613.9ND

12LT

1.1-DCE8.17.9NDNDNDNDNDNDNDNDNDND

CIS/TRAMS337255195214143119811381231193552

MECL40

56.629.355.135.525.69.4

35.614.115.313LT384

PCE265236294322

257.419213620207.31326984

1.1.1-TCA413236553502

324.8256101262210201264168

TCE489325612570319207139226166137153216

VNYLNDNDNDNDNDNDNDNDNDNDNDND

BEN17311982.873.628.316.712.417.218

15.6ND

10LT

EBEN49.839.123.223.110.18.47.69.27.76.6ND

13LT

TO.1590137014601180560322261353323261210138

o-XYL69.556.632.833.810.37.6

13.714

13.510.7ND

14LT

FLOW latxn

6756

COMBINED EXTRACTION WELLSOPERATING

DAY• 1

267891013141516172021222728293134353637384142434445484950515255575962646669717376789294100102103106108112114147176203219238259260

CONCENTRATIONTVOC (ug/l)

18,81218,81117,04312,63014,78612,8509,805

11,78211,21016,2759,2909,7637,4607,9489.3826,3613,5416,6257,3676,9617,85011,2023,2063,2235,3977,6437,0186.7478,3926,2967,5778,7939,8028.4974,8535,59110.8315.690

12,5234,951

10.0658,9749.2087.0916.4376,0003,5255,6313,6203,5543.6892,3221,0172,6842.0553,3257.1982,0124,6711.0132.675

TOTAL FLOW(aa l /dav)505,200554,700471,600452,100478L800449,200425,400596,400575.200556.800535,800510,900568,700545,200537,300570,100589,600566,400524,500447,100495,600572,000528,000509^700473,000504,800483,800464,500466,300497,200459,800456,000442,800427,800499,400483,300469,300432.000513,700496,200468,200501,000479,200550,600541,600198,100555,900517,200611,000566,300554,500563,600566,200530,100561,600

613,000472,400512,600527,900543.800

FLOW TO SINGLEUNIT (gat/day)

196.300214,000152,000148,600146^500128,500126,500168,400160,500149,800140,100133,600109,90083,200135,400155,900165,700150,500152,700134,500132,100155.600142.300138.600130,500141,300143,100139,300142,700160,300141,900153,900165,300163,300160,000160.600159.500154.700104,300105.000108,600108,000118.000182,600182,40066,200183.000173,700205,400190.900190,400191,200193,900177.500185.900

193,200161,400174.400167,200181.500

FLOW TO 2 UNITSIN SERIES(qal/dav)

308.900340,700319,600303,500332.300320,700298,900428,000414.700407.000395,700377,300458,800462.000401.900414,200423.900415,900371,800312,600363.500416.400385,700371.100342,500363,500340,700325.200323.600336,900317,900302,100277,500264,500339,400322,700309.800277.300409,400391,200359.600393,000361.200368.000359,200131,900372.900343,500405,600375,400364,100372,400372,300352,600375.700

419.800311,000338.200360,700362,300

TVOC'S REMOVED( Ibs/day)

79.487.267.247.759.248.234.958.753.975.741.641.735.436.242.130.317.431.432.326.032.553.514.113.721.332.228.426.232.726.229.133.536.330.420.222.642.520.553.820.539.437.636.932.629.19.9

16.424.318.516.817.110.94.8

11.99.6

36.97.9

20.04.5

12.2

I AVERAGEFLOW. 509.517 153.038 356.478

Appendix B

CARBON ADSORPTION UNITS

Appendix BCARBON ADSORPTION UNITS

This appendix presents graphs plotting influent and effluentconcentrations of the individual contaminants and of TVOCsover the groundwater extraction system's first 300 days ofoperation.

1W/CVR170/027

B-l

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Appendix C

AIR STRIPPER

Appendix CAIR STRIPPER

This appendix presents:

A table listing the air stripper's removal effi-ciencies for each compound on each day that datawas available

If effluent concentrations were below detec-tion limits, the removal efficiency is re-ported as greater than the efficiency computedif the effluent was set equal to the detectionlimit

If the influent concentration was below de-tection limits, removal efficiency is reportedas not available (NA)

Graphs plotting influent and effluent concentra-tions for each compound over the system's 300-dayoperating period

lw/CVR170/037

C-l

AIR STRIPPER PERFORMANCE

EFFICIENCIES1678910141720212227282931343536373841424344454849505152555759626466697173106108112114147203219238259260

CCL4MANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

> 47.37%NANANANANANANA

>50.00%NA

66.67%NANANA

CCL3>90.38%'

NANANANANANANANANANANA

•> 76.19%'NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

> 50.00%NA

> 50.00%NA

> 66.67%>75.00%

1.1-DCANA

> 77.78%> 80.77%> 80.39%> 80.39%> 87.50%7 81.48%> 77.78%* 62.46%78148%>84.13%> 83 33%7 93.10%> 83.33%7 84.85%> 82.76%> 85.71%7 82.46%> 80.00%782.46%>83.05%763.61%> 65.92%784.13%>83.33%*• 83.61%> 83.87%^81.48%^•81.82%*• 81.82%^82.46%> 84.85%> 82.76%>82.14%> 85.92%>83.87%>64.85%>86.30%>85.92%* 87.50%786.89%7 85.71%775.00%> 80.00%>75.00%> 85.71%

NA7 88.89%> 75.00%

1 ,2-DCANANANANANANANANA

> 47.37%> 37.50%

33.33%44.83%52.73%17.39%28.57%

>44.44%816%

32.43%51.61%20.69%

NA21.43%34.88%34.62%16.22%23.08%36.36%12.50%29.17%18.75%15.63%29.27%20.83%

>68.75%44.12%43.94%41.82%42.65%72.41%55.56%40.00%

>87.SO%16.67%30.00%

>85.71%33.33%42.86%50.00%50.00%

1.1 -DCENANANANANA

>9.09%NANANANANANA

> 44.44%NANANA

>9.09%NANANANANA

>58.33%NANA

>9.09%>9.09%

NANANANANANANA

>9.09%NANANANANANANANA

>50.00%NANANA

> 50.00%NA

CISNA

> 87.18%7 88.76%787.65%>86.49%> 86.10%> 87.65%7 85.92%>91.53%790.29%79123%

88.10%86.74%80.19%

791.60%>91.60%

76.97%81.69%

>91.80%82.96%

>90.38%>93.01%

80.00%91.33%81.99%87.76%87.50%81.37%90.09%79.55%81.54%83.01%89.60%

>91.74%91.24%83.52%89.25%88.84%

795.87%96.00%91.67%

> 95.65%90.48%82.50%

796.1 5%86.96%87.50%92.31%90.91%

MECLNANANANANA

> 28.57%•>60.00%83.61%84.94%80.14%80.13%71.40%73.28%60.08%77.73%78.98%57.02%60.36%72.32%64.68%74.18%78.00%58.35%74.37%60.43%68.28%67.66%63.09%79.47%59.26%63.06%66.26%69.75%82.43%75.45%62.33%67.46%71.36%94.87%83.33%83.33%80.00%75.00%83.33%

NA>50.00%

NA60.00%

>75.00%

FCE>90.20%>92.2S%792.19%790.48%789.90%792.19%>91.74%789.80%>91.BO%7*0.83%>92.19%7 92.59%

99.29%793.29%>93.63%793.01%>94.44%792.48%>91.94%•79265%>92.25%792.25%793.71%>93.20%792.96%>93.06%793.75%>90.20%786.67%786.11%>87.01%793.90%791.45%790.74%> 92.54%>92.42%•792.70%>93.06%

67.52%>92.66%794.12%•795.24%> 90.91%>60.00%775.00%>83.33%

NA787.50%798.00%

1,1.1-TCA> 85.07%

44.16%> 88.89%>87.80%>89.01%>88.10%>88.24%786.67%789.13%>87.50%> 88.89%789.80%

97.69%789.47%>89.69%>91.15%71.31%

>90.10%>88.64%

80.77%70.00%80.41%82.86%

790.00%74.04%

7 90.00%>«0.99%>66.10%>88.24%

73.63%73.17%76.70%75.61%

> 87.34%>90.10%> 90.10%>8936%792.31%> 90.65%>00.91%>92.31%

60.00%780.00%> 83.33%780.00%•> 88.89%

NA794.74%>98.84%

TCE VINYL>9.09% >11.50%

NA >1736%79.09% > 28.06%>16.67% NA

NA > 54.55%737.50% 714.53%

NA NANA NA

728.57% NA716.67% 736.31%733.33% 57.54%744.44% 740.12%

97.63% >74.49%758.33% >40.12%737.50% 749.24%>3333% > 47.37%754.55% 765.16%733.33% >59.51%716.67% 736-71%>33.33% >57.81%>33.33% 765.75%733.33% 751.22%761.54% > 72.68%737.50% >64.03%744.44% 761.83%>37.50% 762.83%>44.44% 750.50%723.08% 763.37%>16.67% >48.98%>16.67% > 55.36%>26.47% 754.55%752.36% 770.59%>28.57% NA>28.57% 767.11%750.00% >71.51%77757% 749.75%> 44.44% 744.75%> 56.52% 733.33%>50.00% >58.85%

NA 791.38%NA >86.67%NA NANA NA

> 50.00% NANA NA

75000% 747.37%NA NA

>66.67% NA98.57% NA

BENNANANANANANANANANANANANA

790.65%NANANANANANANANANA

79.09%NANANANANANANANANANANANANANANANANANANANANANANANANA

75.00%

BENNANANANANANANANANANANANA

786.84%NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

80.00%

TOLNANANANANANANANANANA

o-XYLNANANANANANANANANANA

NA NANA NA

95.03% > 81 .82%NA NANA NANANANANANANANANANAMANANANANANANANANANANANANANANANA

750.00%NANANANANANANA

97.40%

NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

92.86%NA -- NOT AVAILABLE

AH STRIPPER-CCU AIR STRIPPER-CCU

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Appendix D____

DATA LIMITATIONS

Appendix DDATA LIMITATIONS

The sampling and analytical techniques used during operationimposed certain limitations in the data. These limitationsare presented below as qualifications to the observationsmade in this report.

o Most of the data was generated in NUS Corporation'smobile laboratory. Mobile labs usually are in-tended for screening analyses, not for the levelsof precision generally achieved in the contractlab program (CLP). Because of this, the mobilelab data has not been subjected to a formal datavalidation review as is generally required for CLPdata. The portion of the data that was obtainedfrom analyses in NUS's Pittsburgh lab has beenthrough a validation review.

o Concentration measurements for the isomers of1,2-Dichloroethylene (cis- and trans-) were notseparated in the laboratories' analytical reportsheets. This is true for results from both mobileand Pittsburgh labs. Therefore, throughout thisreport CIS/TRANS refers to the combined concentra-tions of the two isomers.

o Only one, two, or sometimes three sampling eventstook place in July, August, September, October,and November 1987.

o Many volatile compounds were present in the ground-water and contributed to the carbon loading; how-ever, routine tests were not run for many of theVOCs, and thus quantitative accounts cannot bemade for some of the VOCs. References in thisreport to total volatile organic compounds (TVOCs)will mean a summation of the VOCs for which analy-ses were run. A list of these compounds is shownin the "Glossary of Compound Abbreviations," whichprecedes this report.

o During a sampling event, grab samples were takenonce per day. These samples were assumed to rep-resent the concentrations for a 24-hour period.There were daily fluctuations, but it was assumedthat most of the error arising from an occasionalspike or dip in concentration would probably aver-age out in the long run.

o Each of the carbon units had a flow totalizer onthe inlet line so that an accurate flow total could

D-l

Ibe recorded daily. Flows from the totalizer wereassumed to be taken at approximately the same timeevery day and thus to represent the total flow forthe previous 24 hours .

CVR169/031

D-2

Appendix E

SAMPLING POINTCONCENTRATION DATA

Appendix ESAMPLING POINT CONCENTRATION DATA

This appendix presents concentrations of each compound atextraction well sampling points WSl, WS3, WS4, WS5, and WS6for each operating day for which that data was available.Figure E-l shows the sampling point locations.

1W/CVR170/038

E-l

J: \INDUST\W68471\SCHeu.DWG

SINGLE CARBONADSORPTION UNIT

WS4

TWO CARBON ADSORPTION[WS2 UNITS IN SERIES

EXTRACTIONFORCEMAIN

FROM BLOCKING,WELLS

- SAMPLING POINTS ANDIDENTIFICATION NUMBER

WS5—»S

WET WELL

TO VAPOR-PHASECARBON

BLOWER

\WS6

TO BATTLECREEKRIVER

W6B471.DE

RGURE E-1SAMPLING POINT LOCATIONS

WS1 CONCENTRATIONS (PPB)Op«r. Oat

1267a91013141516172021222726293134353637384142434445464950515255575962646669717376769294100102103106106112114147176203219238259260

ecuNDNDNDNDNDNDNDNDNDNDtototototototototototo

1230NDNDNDND126NDNDNDND116165NDNDNDNDND

685NDNDNDNDNDNDNANANANANANDNDNDND

25LT25LT

ND85200NDND

CCL3NDNDNDNDNDND

12.4NDNDNDNDNDNDNDNDNDNDNDNDNDND

903NDNDNDNDNDNDNDNDNDND139NDNDNDNDND

483NDND159NDNDND60185104NANA25

69LTND28525LT170ND75NANDND

1.1-DCA91.7149124116161140140120110240100110701059290

45.362

64.470.475.473.927.731.4M.SW.S73.67S.670.678.872.477.211657.826.429

26.825.237626.449.771.856.752.239.4NANA106NANANDNDNDND

25LT25LT

ND32LTNAND

30LT

1.2-DCA100010809OO719643464324570570920340360270338350210

136.122023822730347310697.*1501*337*19*1*917617722024020712715115411357799.593.8257139111128NANA124NA62NDNDND10925LT35ND56ND

33LT27LT

1,1-DCEtoNDNDNDNDNDNDNDNDNDNDNDNDNDND25NDNDNDND

46.8NDNDNDNDMlNDNDNDNDND

24.160.2NDNDNDNDND

287NDND277ND

29.1toNANANANANANDNDNDND

25LT25LT

NDNDNANDND

CIS/TRANS3470323030602150263021901660200020802640161017701350152014201100743

11001300114014001160550572721

1190102093610909979956575068969467069055595952249168465854358830639944413038730521316529123023008LT2808592113

bECL11001120817675694566295700700980370470290300410290

177.323628323428023796.*B2.61561*614*1S714917112713617183.610310510996.638511093.813811913881.2NANANANANA

62LTND

46LTND

34060NANDND

26tTND

PC£20002240264021102540202015802170225030301770189016001520215015201020187021601870200016006128211350192014701680224016302040179019701660142011403010229022501290270022902400176016601491920

1237108011971231813ND

4904709605626609

2786250407

1.1.1-TCA290029702680168017401840120015501620247011001330940937

15106044788708568360998904074165936771220726103071181484410001030608780

115090010606861040983997779832893997772

1324719538452273483300480276375680204562

TCE260026302300160019601660114013701470224011501310820826

12306603327568079911150845415410735

101084*

1030140091*1280121014201520746

1060214017101430874

190014601860134012501455395843541510526404261401290530

1063530720248922

VWYL44035839048046336654642220640270230260288ND276NDND118153115125NDND18633614915212*199141

1220667139NDNDNDNDNDto

61.564.165.267.2NDNANANAISONA175NDNDND2532NDNDNANANA

BB4350352293214231218167200200190

24302250175011413084

37.587.880.776.681.695.843.144.472.291

78.679.676.*66.874.110814077.451.857.975.5NA

45951.573.210378.273

62.4NANA

457NANANDNDNDND

50LT2SLT

NANANAND

26LT

EBEN16014714711112912488.7100100asNDNDND728060

23.159.572.363.864.6208034.638.260.187.494.294.4133S6.411638223826233.6106270NA86469.7269211205147105NANA100NANANDNDND

39LT50LT58NDNANA

23LT39LT

TO.4500435035002630323031002530280017502710602390

174019401310531

13201310125012661400671663

122015701320150017201200160021002390242097013502840

NA17401130287020002360186015501620829

1237395659860440318625400770231NANA219568

o-XVL200185192145165162120160140130NDNDND

08.27042

18.143.557.547.466.369.440.646.282.710392-211516489.814050131635172.8142366NA96891.4382.8276270191141175NA117NANANDNDND

3BLTNANANDNANA

22LT103

TVOC18.81218.8111 7.04312.63014.78612.8509.80511.76211.21016.2759.2909.7637.4607.9489.3826.3613.5416.62S7.3676.9617.8501 1 ,2023.2063.2235.3977.6437.0186.7478.3926.2967.5778.7939.8026.4974.8535.59110.8315.69012.5234.95110.0656.9749.2067.0916.4376.0003.5255.6313.6203.5543.6892.3221.0172.6842.0553.3257.1982.0124.6711.0132,675 _

NO-NOT DETECTABLE NA •• NOT AVAILABLE LT - LESS THAN

WS3 CONCENTRATIONS (PPB)Op*r. O*y

1267B91013141516172021222728293134353637384142434445484950515255575962646669717376789299100101106108112114147203219238259

CCL4tototototo1.6tototototototototototototototototo1.7to1.7toto2.2toNDtotototototototototototototototototototototo

SOLTND10H>ND

CCL3totoNDNDNDtoNDNDtoND1.3NDNDNONDtoNDNDND4.45

3.1ND4.82.14.5NDNO5.25

ND2.93.3ND4

4.24.43.85.95.54.96.26.25.9NA446557

ND127SOLT

616513

1.1 -DCA3.81.6NDNDNDNDNDNDNDNDNDND1.2ND2

2.73.41.72.72.76

4.646

3.24.43.93.25.26.53.73.24.84.65.S6.86.36.710.79.79.110.211.310.210.91020111114181620

SOLT14271217

1.2 DCA1.1NDNDNDND2.2tototo1

NDND9.610.412.215.822.715.617.430.433

24.922.724.617.422.521.622.426.438.726.219.218.221.726.531.231.227.5240.638.333.845.842.942.647.92956S

5263797586

SOLT42623751

1.1 DCEtototoNDNDNDtototoNDNDNDtototoNDNDNDNDtotototoroND2

NDNDNDNDNDNDNDtotototoNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND

SOLT1214

CIS/TRAMSNDtototototototototototo

21.122.723

39.545.431.737

60.472.355.356.355.835.5S3.652.350.456.884.3656.938.337

46.553.560

60.2S5.894.382.676.198.497.997.611355988881818812112735016131212860

hECLNDNDNDNDtototo1.55

15.516

33.6152.2196.9242.52492602563053683102552372522422S92S92592743182652302242272552542522182341951621911671251357611364714149313656919916

PCENDNDNDNDNDNDNDtotototototototototototototototototo1.6ND1.71.31.2NDNDNDND2.8NDNDNDNDNDND2.61.11.4NDNDNDNDNDNDM>NDND

SOLT13

NDND

1,1.1-TCA2

NDNDNDND2.83

NDNDNDNDND5

5.76.18.512.5

8»14

16.211.911

12.86.112.110.810.214

15.711.48.97.99.611.111.512.810.416.514.712.516.115.S15.318126

23181115146

SOLT29462668

TCENDNDNDNDNDND1.6NDNDNDNDND1.51.51.44.35.83.63.45.67.24.74.14.93.35.14.14.267.74.53

3.13.44.44.24.53.77.35.94.66.15.97.37.3554333543

SOLT69610

VINYL2.5NDNDNDNDNDND4.2NDNDNDND

47.670

86.210611297.91191771251251091331211831471341332251551821681221501852112102281801701231371131163163322742004844588174

SOLTND5839NA

BEN2.11.3NDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND1.6ND1.6NDND1.7NDNDNDNDNDNDNDNDNDNDNDNDNDND1.11

NDNDNDNDNDNDNDND1LTNDNANA1LT

EBENNDNDNONDNDM>NDNDNDNDNDNDNDNDNDNDNDNDNDNDtototototototoNDNDNDNDNDtotototoNDNDNDNDNDNDNDNDNDNDNDNDNDNDND4ND1LTNDNANAND

TOL13.55.9NDNDNDND1.2NDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND1.11

1.3ND1.61.21.31.32

1.91.S1.71.72.22.12

NDNDNDND34ND1LTtoNANA1LT

o-XVLNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDtototoNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNANDNANAND

TVOC259NDNDND7665171734238307373426482415494663575485444497433551499485526702524489468435516558584537639534475501487422451509638475471702723350481406269584263239

NO - NOT DETECTABLE NA -- NOT AVAILABLE LT -• LESS THAN

WS5 CONCENTRATIONS (PPB)Op*r. Day

1676910141720212227282931343536373841424344454849SO5152555759626466697173106108112114147203219238259260

ecuNDN>NDtototoNDNDNDMDNDNDMDNDNDNDNDNDNDNDNDND2.1NDMDK)NDNDNDNDNDNDNDNDND1.9NDNDNDNDNDNDND2LTND31

NDND

ecu10.4NDNDNDNDNDNDtotoNDNDMD4.2NDMDNDNDNDNDNDNDNDNDNDNDNDNDMDNDNDNDNDNDNDNDNDNDNDND1

NDNDND2LT

12

ND34

1.1-DCAND4.55.25.15.18

5.44.55.75.46.36

14.56

6-65.67

5.75

5.75.96.17.16.36

6.16.25.45.55.55.76.65.85.67.16.26.67.37.16974547494

1.2-DCANDNDMDNDNDNDNDND1.91.61.52.9

31.12.32.11.64.93.73.12.92.52.84.32.63.72.63.32.42.43.23.24.12.43.26.86.65.S6.88.791086to7127144

1.1 -DCEMDNDMDNDND1.1NDMDNDMD1to1.8NDNDND1.1MDMDto1

ND2.4K>N>1.11.1NDNDNDNDNDNDND1.1ND1

NDND1

NDNDND2LTMDNDND21

CIS/TRANSto7.88.98.17.48.48.17.111.810.311.412.614410.611.911.915.214.212.213510.414.312.5is

16.114.716

10.211.113.213

15.312.512.121.717.618.622.424.225242321402646246522

hECLNDNDNDNDND1.42.56.131.227.730.245.152.447.149.437.16O.544 .835.440.242.640

43.739.64C.S43.543.636.338

37.637.941.231.429.639.129.228.629396654612154

KE10.212.912.810.59.912.812.19.812.210912.813.519814.915.714.318

13.312.413.612.912.915.914.714.214.416

10.27.57.27.716.411.710.813.413.213.714.411.71417211 15465850

1.1.1-TCA6.77.79

8.29.1848.57.59.289

9.882.39.59.711.312.210.18.810.49

9.710.510

10.410

11.18.48.59.18.210.38.27.910.110.19.413

10.711135565961966

TCE1.11

1.11.2ND1.61

MD1.41.21.51.8

71.82.41.61.52.21.51-21.51.51.52.61.61.81.61.81.31.21.21.362.11.41.42

4.41.82.3211

ND1

2LT1213

140

VINYL11.312.113,9MD22

11.7NDtotO15.717.916.739.216.719.719

26.724.715.823.729220.536.627.826.226.920.227.319.622.42234ND

30.435.119.918.1IS

24.3116751092

MD19NDNAHA

BENNDMDNDNDMDNDMDNDNDMDNDMD10.7NDNDNDNDM>NDNDNDND1.1NDNDNDNDNDNDNDNDMDNDNDNDNDNDNDNDNDNDNDND1LTNDNANAND4

HENMDMDMDMDNDMDMDMDMDMDMDND7.6MDMDMDNDNDMDMDNDNDNDNDNDNDNDND1.2NDMDNDHDNDNDMDNDNDMDNDNDMDND1LTNDNANAND5

TO.MDtoMDNDtoMDM>HDMDMDMDMD157NDNDMDMDMDNDHDMDHDHDMDNDNDNDNDNDHDMDNDMDNDNDMDNDtoMDI2

MDMD1LTMDNANAND77

O-XYLMDNDHDtoMDMDMDMDHDMDMDND5.5MDHDHDMDNDMDNDMDNDHDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDMDNDMDNANDHANAND14

TVOC39.746

50.933.153.553.437.635

73.480,891.6108.4820.1109.5116.7102.7149.8118.193.9111.5115

107.8138.8117.8124.9120.9119.3101.595

99.699.0613073.4101

136.4109.1103.3110.2127.71931577961744910849128415

ND-NOT DETECTABLE NA - NOT AVALABLE LT -- LESS THAN

WS4 CONCENTRATIONS (PPB)Op*r. Day

126789101314151617202122272829313435363738414243444548405051525557596264666971737679809299101106203219238

CCL4NDNANDNDNDNDtoNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND21

ecutoNANDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND2.9NDNDNDND4NDND1.8ND3.2NDND333

NDND94

1.1 -DCANDNANDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND1.2NDND1.2NDNDNDND3.2NDNDNDND3.7ND2.32.3ND6.83.52.13.73.44.73.7457

128

ND1302811

1.2- DC ANDNANDNDNDNDND1

NDNDNDNDNDND3.73.75.73.32.73

13.78.16.6ND5.56.15.45.617.8

97.45.55.919.410.812.311.39.928.615.59.1lfl.517.719.219.216.9194536ND419138

1,1 -DCENDNAtotototototototototoNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDtototoNDND1321

CIS/WANSNDNANDNDNDNDNDNDNDNDNDNDNDND5.46.48.94.23.64.121213.913.313.58.612.19.79.731.918.313.58.79.335.916

18.918.516.553.430.320.335.731.338

36.634.4384846ND7

333126

LEO.NDNA1.11.22.89.324.643.660

79.441.353.666.298166203

305.7231271298145247249249250268269268292252274236222242265256242203201182159185152123119110597637ND7168

PCENDNANDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND1

NDNDNDNDNDNDND3.2NDNDNDND2.2NDND3

1.1.1-TCANDNA3.2NDND1.81.92.3NDNDNDNDNDND2.62.33

2.32.22.76.54.54

4.83.53.83.33.38

4.33.63

2.86.73.94.44.64.59.86.74.38.56.67.47.66.7636

NA112815

TCENDNANDNDNDNDNDNDNDNDNDNDNDNDNDNDN>NDNDND1.6NDND1.3ND1.1NDND1.91.2NDNDND1.3NDND1

ND2.21.51

1.91.62.51.61.812

NA

131

VINYLNDNANDNDNDNDNDNDNDNDNDNDNDND

29.844.742.441.746.148.910467.36271.566.412195.491.4156128106131141171144156196196308182181128164120113111311221191NDND8038

BENNDNANDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNANA

EEENNDNANDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND7

NDNDNDND1.6NDNDNDNDtotoNDNDNDNDND3toNANA

TOLNDNANDNDNDNDNDNDNDNDNDNDNDNDNDtotoNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND2

ND2

NDNANA

o-XVLNDNANDNDtotototototototototototoNDNDNDNDNDtoNDNDNDNDNDNDNDNDNDNDNDND

NDNDNDNDNDNDNDNDNDNDNDNDNDto6NDNANA

TVOCNANA4131127476079415486982082603662B332635746434133534135441238337851141340538438848344045247743461442237738437731830432644441432713

210592246

ND- NOT DETECTABLE NA - NOT AVAILABLE LT - LESS THAN

WS6 CONCENTRATIONS (PPB)Op«r. Day

167a910141720212227282931343536373841424344454849SO5152555759626466697173106108112114147203219238259260261

CCL4NDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDMDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND1LTND1NANDNDND

CCL3NDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDMDMDMDMDNDNDNDND21

1LTNDMDNANDNDND

1.1 DCANDMDNDNDMDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDMDNDMDNDNDMDMDMDNDNDNDNDNDNDNDNDMDNDNDNDND1LTNDNDNANDNDND

1.2 DCANDNDNDNDNDNDNDNDNDND11.614.71.91.5ND4.52.51.52.32.52.22.81.73.122.1211.72.62.72.91.9ND3.83.73.23.92.446ND57ND8472ND

1,1-DCENDNDNDNDNDNDNDNDNDNDNDNDNDtototototototototototototoNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND1LT4NDNANDNDND

CIS/TRANSNDNDNDNDNDNDNDMDMDNDND1.519-12.1NDND352.6ND2.3NDND2.51.32.91.821.91.12.72.42.61.3ND1.92.922-5NDl2ND27ND6352ND

LEO.NDNDNDNDNDNDND14.75.56

12.91418.81 17.82617.89.814.2118.818.210.218.413.814.113.47.8IS. 414

13.99.55.29.61 19.38.32111113NDNA1NDND

PCENDNDNDNDNDNDNDNDNDNDNDND1.4NDNDNDNDNDNDNDNDNDNDNDNDNDMDNDNDNDNDNDNDNDMDNDNDND3.8NDNDNDND1LTNDNDNAMDND12

1.1.1-TCAND4.3NDNDNDNDNDNDNDNDNDND1.9NDNDND35NDND22.71.91.8ND2.7NDNDNDND2.42.22.42NDNDNDNDNDNDNDND2ND1LTNDNDNAMDNDND

TCEND1.4NDNDNDNDNDNDNDNDNDND1.7NDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND1LTNDNDNAND21 1

VINYLNDNDNDNDNDNDNDNDNDND7.6NDNDNDNDNDNDNDNDNDNDNDNDNDMDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND1LTNDNDNANANANA

8ENNDNDNDNDNDNDNDMDNDNDMDNDNDNDMDNDNDNDNDNDNDNDNDNDMDMDNDNDNDNDNDNDNDNDNDNDNDMDNDNDNDMDND1LTNDNANANDNDND

EGENNDNDNDNDNDNDNDNDNDNDNDNDNDNDMDNDNDNDNDNDNDMDNDMDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDND1LTNDNANANDNDND

TOLND1.6NDNDNDNDNDNDNDNDNDND7.8NDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDMDNDNDNDND1ND1LTNDNANAND2ND

OXYLNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDNDMDNDNDNDNDMDNDNDNDNDNDNDNDNDNDNDMDNDNDNDNDNDNDNDND

NDNANANDNDND

TVOCND7.3NANANANANA14.75.514.61660.622.812.57.837.522.911.320.816.212.925.313.227.117.618.217.410.623.121.321.814.75.215317.614.514.78.2696915715713a23

NO--NOT DETECT ABIE NA -- NOT AVAILABLE LT -- LESS THAN

Appendix F_______

OPERATING DAY TABLE

Appendix FOPERATING DAY TABLE

The following table converts operating days into calendardays (e.g.. Operating Day 1 « March 4, 1987, Operating Day 2= March 5, 1987, and so forth).

1W/CVR170/039

F-l

OPERATING DAY TABLEOperating

Day123456789

101 1121314151617181920212223242526272829303132333435363738394041424344454647484950

CorrespondingDale

3 / 4 / 8 73 / 5 / 8 73/6/873 / 7 / 8 73 / 8 / 8 73 /9 /87

3/10/873/11/873/12/873/13/873/14/873/15/873/16/873/17/873/18/873/19/873/20/873/21/873/22/873/23/873/24/873/25/673/26/873/27/873/28/873/29/873/30/873/31/874/1/874/2/874/3/874/4/874/5/874 /6 /874/7/874/8/874/9/87

4/10/674/11/874/12/874/13/874/14/874/15/674/16/874/17/874/18/874/19/874/20/874/21/874/22/87

OperatingDay51525354555657585960616263646566676869707172737475767778798081628384858667888990919293949596979899100

CorrespondingDate

4 /23 /874 / 2 4 / 8 74/25/874 / 2 6 / 8 74 /27 /874/28/874/29/874/30/875/1/875/2/675 /3 /875/4/875/5/875/6/875/7/875/8/875/9/87

5/10/875/11/875/12/875/13/875/14/875/15/875/16/875/17/875/18/875/19/875/20/875/21/875/22/875/23/675/24/875/25/875/26/875/27/875/28/875/29/875/30/875/31/876/1/876/2/876/3 /876 /4 /676/5/876/6/876/7/876/8 /876/9 /87

6/10/876/11/B7

OperatingDay101102103104105106107108109110111

1213141516171819

120121122123124125126127128129130131132133134135136137138139140141142143144145146147146149150

CorrespondingDate

6 /12 /876 / 1 3 / 8 76/14/876/15/876/16/876/17 /876/18/876/19/876/20/876/21/876/22/676/23/876/24/876/25/876/26/876/27/876/28/876/29/876/30/877/1/877/2/877/3/877/4/877/5/877/6/877/7/877/8/877/9/87

7/10/877/11/877/12/877/13/877/14/877/15/877/16/8771 17 7877/18/877/19/877/20/877/21/877/22/877/23/877/24/877/25/877/26/877/27/877/28/877/29/877/30/877/31/87

OperatingDay151152153154155156157158159160161162163164165166167168169170171172173174175176177178179160181182183184185186187188189190191192193194195196197198199200

CorrespondingDate

8 / 1 / 6 78 / 2 / 8 78/3/878 / 4 / 8 78 / 5 / 8 78 / 6 / 8 78 /7 /878 /8 /878/9 /87

8/10/878/11/878/12/678/13/878/14/878/15/878/16/878/17/878/18/878/19/878/20/876/21/878/22/878/23/878/24/878/25/878/26/878/27/878/28/878/29/878/30/878/31/879/1 /879/2/879/3 /879 / 4 / 8 79 /5 /879/6/879/7 /879/8/879 /9 /87

9/10/879/11 /879 / 1 2 / 8 79/13/879/14/879/15/679/16/679/17/879/18/879/19/87

OperatingDay201202203204205206207208209210211212213214215216217218219220221222223224225226227226229230231232233234235236237238239240241242243244245246247248249250

CorrespondingDate

9 / 2 0 / 8 79 / 2 1 / 8 79/22/879 /23 /879 / 2 4 / 8 79/25/879/26/879 /27 /879/28/879/29/879/30/8710/1/8710/2/8710/3/8710/4/8710/5/8710/6/8710/7/8710/8/8710/9/87

10/10/8710/11/8710/12/6710/13/8710/14/8710/15/8710/16/8710/17/8710/18/8710/19/8710/20/8710/21/8710/22/8710/23/8710/24/8710/25/8710/26/8710/27/8710/28/8710/29/8710/30/8710/31/8711/1/871 1/2/871 1/3/8711/4/871 1/5/671 1/6/8711/7/8711/6/87

OperatingDay251252253254255256257258259260261262263264265266267268269270271272273274275276277276279280281282283284285286287288289290291292293294295296297290299300

CorrespondingDate

1 1 /9 /871 1 /10/871 1/1 1/871 1 / 1 2 / 8 711 /13 /8711/14/8711/15/8711/16/8711/17/8711/10/8711/19/8711/20/8711/21/8711/22/8711/23/8711/24/8711/25/6711/26/8711/27/8711/26/8711/29/8711/30/8712/1/8712/2/6712/3/8712/4/8712 /5 /8712/6/8712/7/8712/8/8712 /9 /8712 /10 /8712 /11 /8712/12 /8712/13 /8712 /14 /8712/15/8712 /16 /871 2 / 1 7 / 8 71 2 / 1 8 / 8 712/19/8712/20/8712 /21 /6712/22/8712/23/8712/24 /8712/25/6712/26/8712/27/8712/28/87

II

1

CKMHIU.Mock * V«otehCFPRCEcology and Environment

Documents

CH2M HILL INC - THOMAS SOLVENT GROUND WATER … · groundwater extraction - well treatment system monitoring report by ch2m hill june 1988. ... abbreviation ccl4 ccl3 1.1-dca