WO Post Oak BoulevardHouston. Texas 77056-6503M^Ming address: P.O. Box £166HoustW. Texas 77252-2166

^C^. V^u)

^ I

Februarys, 1990BEI/OSDH-018

Ms. Usa LyhaneEnvironmental EngineerSuperfund ProgramOkiahoma State Department of Health1000 N. E. TenthOklahoma City, Okiahoma 73152

Subject: Oklahoma Refit-Trig Co. RI/FS qnd Risj AgsegSTOnt

Dear Usa:

Attached for your information/file is a copy of the ORC Project Site Wells Evaluationreport. The report is prepared encompassing the results to date of the scope of workdetailed in Task V (Location and Evaluation of Existing Wells).

Please note that the report is being transmitted as an interim. The task will becompleted as part of the Phase I field activities and final evaluation will be included aspart of the draft Rl report.

If you have any questions or comments concerning this transmittal, please c^'l me at(713) 235-2954.

Very truly yours,

SherM.Atiqi.P.E

SMA/jj

Attachment

Record Document

IMTER7M STATUS OH EXISTING SITE WELL EVALUATION

INTRODUCTION

Task V of the Remedial Investigation for the ORC Superfund Siteis to locate and evaluate all existing site monitoring,recovery, and production water wells. To accomplish this,several activities were proposed:

^^K'SMs—^-'C.MSJVQ^Site reconnaissance (part of Task II)

Physical evaluation

Geophysical borehole logging

Downhole video ca.nera survey

t E B 9 6 1990waste^^,,^

Obtained from this task will be valuable data regarding sitestratigraphy and lithology, ground water levels andcontamination, and well construction and integrity.

WORK COMPLETED AND PRELIMINARY DATA ANALYSIS

A total of 78 wells were located on site. Seventy-four (74) ofthese were located during the site reconnaissance (10/23 -?5/89) , Task II, and the other four during the site topographicsurveying. Task III/ (10/23/89 - 13/2/89) and geophysicalborehole logging (12 /13 /89 - 1 /12 /90) , Task V. Seventy-one (71)wells are of the monitoring or recovery variety, constructed of2- to 8-inch diameter PVC riser pipe and screen. The otherseven are steel-cased water production wells, each near 1000feet in depth.

Well locations and elevations were surveyed during the sitetopographic survey. Elevations at the top of each well arelisted in Table 1.

Physical assessment of each well, excluding the seven productionwater wells, was performed by a joint OSDH/Bechtel team. Theteam monitored the air around each well and in the headspace ofeach well for hydrocarbons. The maximum level of hydrocarbonsdetected by any of the three instruments used (Knu, OVA, andPhotovac) is listed in Table 1. Hydrocarbons were detected inthe headspace of 43 wells. Volumes detected ranged from 0.4 to325 ppm and averaged 49.6 ppm. The team also sounded some wellsfor total depth, measured depth to water in all wells andthickness of floating nonaqueous phase liquids (NAPL) where

present. The elevation at the bottom of each well, the watertable elevation and elevation at the top of floating NAPL arelisted'in "Table ' 1 - ' Twenty wells, contained measurable amounts./f NAPLo Thickness of NAPL ranged from 0.5 to 16.9 feet,averaging 6.8 feet.

Well depths for 52 monitoring and recovery wells, not includingthe 11 acid recovery wells, ranged from 27.3 to 73.3 feet,averaging 53.1 feet. Depths of the acid recovery wells (AR-)ranged from 18.5 to 51.6 feet, averaging 35.9 feet.

Fifty monitoring and recovery wells were logged using boraholegeophysics (see Table 1) , Several wells were not logged becauseof obstructions within uhose wells. Ten of the 11 acid recoverywells were not logged. This was done because of the highdensity of wells within this small area. The suite of logs runin each well included: natural gamma ray, focused density,neutron, single-point resistance, natural resistivity, andcaliper. These logs and their uses are described in the FieldOperation Plan, (Section 3 .0 ) . Quality logs were obtained foreach well logged. Preliminary interpretations of the logs wereperformed and estimated elevations for the top of sound rock,and top and bottom of screened intervals were made and arepresented in Table 1. Detailed analysis of the logs will beperformed after the construction of additional wells which willbe logged both open hole and after well installation. Thedetailed lithology obtained from the physical logging of samplesand cores from these new wells compared to the geophysical logsrun during Task V will allow us to obtain "type" logs forcomparison with the logs run in the existing wells.

Ground water elevations were contoured as shown on Sketch 1.Direction of flow is generally east to southeast with anapproximate gradient of 0 .01 ft/ft. (This interpretation ispreliminary.)

Also shown on Sketch 1 are three general area^ where NAPL wasdetected on top of the water table.

WORK TO 3E COMPLETED

The following work required to complete this task will be doneduring the RI Phase I field investigation:

Borehole geophysical logging of the production waterwells.

c Video camera survey of selected existing wells. (Thiswork was delayed due to technical problems with the videocamera.)

c^^0inT—

00

SuperfiJnd AdministrativeR&cord Document

0 0 1 5 6 9

CONCLUSIONS

Valuable data has been obtained by this task. Full value ofthis data can only be realized when the "type" logs, asdiscussed above, are developed during the RI Phase I fieldinvestigation. Data obtained to date was used to help locatethe monitoring wells to be constructed during the fieldinvestigation (FOP Drawing FOP-9, attached). The number ofshallow wells originally scheduled for construction along theeast site boundary was reduced due to the high density ofshallow and intermediate depth wells located in th acidrecovery area. Further investigation of these existing wellsduring the Phase I field investigation may require reinstatementof the originally proposed wells. Additional well locationswere added along the north site border to better definepotential contaminants migrating northward from the storage tankarea toward Gladys Creek. Also, the proposed cluster of threeupgradient wells was moved as far northward as possible on thesite property to reduce the risk of contamination.Final interpretation of the borehole geophysical logs will beused to help define site stratigraphy/lithology and helpdetermine which of the existing site wells may be included inthe groundwater sampling program.

Superfund AdministrativeRecord Document

ssavitch

001571

£ L S 1 0 0TABLE 1

EXISTING MONITORING AND RECOVERY WELL EVALUATION

Well No.NE-1NE-2NE.3NE-4ME-5NE-6SE-1SE-2SE-3SE-4SE-£SE-6SE.7SE-8SE-9SE-10SE-nSE-12SE-13SW-3SW-4SFUQ-4SFDG-1SFDG-2SFDG-3NVMNW-3NW-4NW.5NW-6AR'CAR.lAR-2AR.3AR-4AR-6AR-6 iAR-7AR-8AR.9

GeophysicalLog Run

YesYesYesYesYesYesNo

YesYesYesYesYesYesYesYesYesY99YesYesYosYesYesYesYesYesYesYesYssYesYesYasNoNoNoNoNoNoNoNoNo

DescriptionLog Avellabie

YesYesYesYesYesYesYesYesYaaYesYesYesYesYesYssYesYesYesYesYesYesNoNoNo

Yes?

YesYesYes???????????

Topo(Casingi960.61350.61355.01363.2135601349.51324 11340,!1348.31328.21337.61321.41343.61345,41352.91313.5

1 3 4 1 . 71337.31352.41349.31354.41345.81352.81S53.81364.81364.81364.71371.4

1370.31324.31327.51387-01325.41324.61324.11324.91323,01323.41323.9

Qotlom(l)ot WsU

1296.11292.01 3 0 3 . 21293.41295 21289.01294 11265.S1290.41265.91288.41283.01286.61251 .21287.81289.2

51 <Dep!h)1285-61288.71291.01309,01293,71288.61 3 0 1 , 71303.61297.9126/ .81296,71298.11300.21272.71286,81285.01305.81287.13305.11289.45304 51284.93275.9

Groundwoior1337.11333.81340.01337,21332.51328.41319 .01328.71328.81323.21328.01306.81326.11328.21330.21298.0

21 (Depth)1 3 1 6 . 81320.21332.11330.21337.91332.01336.3^332.31345.41349.81347.91346,71353.71323,11323.01317 .81 3 1 6 . 91320.11 3 1 4 . 21323,11 3 1 0 . 61320.41322.4

Top FJoalIngNAPL

NONiJNDNONONDNDNMNONMNMNONDNDNONDNONONDNMNONMNONM

1936.6NMNDNDNDNMNMNMNMNMNMNMNONONMNM

Estimated (2)'Top ofScreen1 3 1 4 81 3 1 0 . 6U55.81^32 213.: 1 01304.5

1306.11309 31295 21305.61 3 0 1 , 41305.61307.41305.9

731.0 (Depths

1 3 0 1 . 71304.31 3 1 0 . 41 3 1 9 . 31327,41306.81319 .91323.81 3 2 1 . 81 3 1 7 . 81310.71 3 2 1 41313 .31294.3

£ slim a led (2)*Bo Horn

of Screen1302.61292 61306,81256.21303,01290.5

1 2 B 9 . 11292.31288.21209.61283 41208.61293.41299.91289.2

44.0 (Depth)1^87.71 2 9 1 . 31292.41316.31299,41293.81303.91307.81 3 0 1 , 81300,81297,71300.41301 .31274.3

Estimated (2)'TopoiRock

1345.81345.61345 61339 21336 01332.5

(3) 1319 .11332.1533531326 21332.61 3 1 6 41333.61333.41340.91 3 1 4 . 5

200(Deplh)1 3 2 1 . 7132-* 31335.4; 337.41334 4133-i.81335.91345.61355,8'353 81350.713-J8.41350.31310 .3

1282.5(3)

12S0.4 (3)

:313.9 {3)

———————————————^Maximum Hyrirocartions';

Detected in WeH <Head Space (FPM) -t

00 ^

——————0———————^0 <0 )

0 <•0

1.20

301 700000000

1000

0.50556

0.500081

702773300

0.51.2

3 E=! ^.: b: =3: ^5 o:^'•5^ 0

? orL39

17 L S I. 0 0(0

Well His.AR.10RW-1RW-2RW-3RW.4RW-5RW.6RW-7RW-8RW-9RW-10RW-11RW-12RW-13RW-14RW-15RW.16RW.17RW-18RW.19RW-20RW-21RW'22li.i£-2F.I

E-4E-5MW.1MW-2MW-3

Ooophyfcaltos Run

NoYesYesNa

YesYesYesNo

YesYesYesYssYesYesYesYesYesYesNoNo

YesYesYesNoNoNoNo

YssYesYesNo

DescriptionLog Available

NoNoYesNoNoNoNoYesNo

Yss 7Yes?YesYesYesYesYesYeaYesNoYesNoNoNoNoNol\hNoNoYesYes

7

Topo*Casing1324.31366.41364.41365.01363.61361.21363.81363.31363,31358.71360.41352.81348.81350.81349.81353.21353.91362.41356.41352.01351.81353-21363.31350,71347.21349.01359.71352.2

1340.0

Bottom (1)of Wett

1290.11 3 1 2 21308 .1

1303,51 3 ) 1 . 31298.2

1318 .01 3 0 1 , 11306.61309.81288,81319.61302,61249.91294.31304.11307.21313.51295,31294.21313 .01317 .6

niQ o1330.')

1 1 9 Oeplh1208.1

Groundwater1 3 2 1 . 81347.61345.81339.11339.81333,61 3 4 1 . 01 3 5 1 . 51347.51333.91340.71332,21323.31 3 3 1 , 71329.71339.91 3 4 1 . 51337.61338.11332.91 3 3 1 . 51341 .81352.91 3 3 1 . 8

mn 11338.81334 0

^1 !op of casinc1 3 1 6 , 0

Top FloatingNAPLNM

1348,713S4.21350.21349.61350.51 3 4 1 , 51352 41349.71346 51348,01339 31339.41335-91337.7

NMNM

1352,7NM

1334.41340.1

NM1353.4

N0

1334 SN0NMN0ND

Eslimaled (2)*Top o)Screen

1329.41324.4

1322.61326,21 3 1 3 8

1336.31 3 1 3 . 71 3 1 3 . 41 3 1 3 . 81 3 1 3 . 81329.81309.81 3 1 4 , 21 3 1 1 . 81 3 1 9 . 4

1 3 1 5 . 81 3 1 2 . 21333,3

107 (Depth)1220,0

Esllmaled (2)'Botlom

of Screen

1 3 1 5 . 41 3 1 0 4

1308.61 3 1 3 . 21300,6

1321 .31302,713U8.41310 .81289.81320.81303,81296 21302 S1306.4

1298.81295.21 3 1 4 . 3

n7(0eplh)1 2 1 0

EsUwialad 12)'TopotRock

?1354.41350.4

1350.61350.21343,81356.31348.31335.71340,41336.81328.81330.01329.81328.21333.81332.4

1332.01339.81 3 3 1 21350.3

ISfDeplh)1517 .0

Maximum Hydrocarbon»Detected In Well

Head Space 1PPM)0-41 0 54255224090

2 1 0301 2751 5 070251 23.43.31 1 00.7B52160900

95700

32500

TO<-'V)cfc•a- >•:3

3

iU•c^

Notes 1, All ^Veils comained some sediment. Elevations indicate deepest point to where well is open.2. As determined ifom borehole logging-3. From descriptive tog.NO • Not detected-NM- Not measureabie• Eievalion (Feet MSL)