SITE ASSESSMENT BEPOKTyoRPopile^ 2nc,El Dorado, Union County? Arkansas

January 25^ 1991

Prepared forsJ. Chris retersan

Deputy Project officerEmergency nefiponsa Branch

El?a « REQIOK 6

Contract Numberi 68"wo"oo37

tf^invat^tfiiyiTyap'init iiMir»IL/XAVJU& 'LPA.K.AA&^AJiil-* AAA^L/*

1609 MAIN STREET, SUITE 814, DAt.LA3, TEXAS 78201, TEL, 214-742-6001international SpofiinltBii m tno Gnvironniant

roflVdad papar

ecology and environment., inc.1509 MAIN STREET, DALLAS, TEXAS 75201, TEL. 214-742-6601

Internattonal Specialists in the Environment ARD008052508

Date; January 25, 1991TO! Patrick Hammack, Senior OSC

EPA Region 6 , Emergency Response BranchThru; J. Chris Petersen, DPO

EPA Region 6 , Emergency Response BranchThru; Kisho"- Pruitwaia, TATL

Region 6 , Technical Assistance TeamFroa; Thomas Yank

Region 6 , Technical Assistance TeamSubj: Site Assessment Report: Popile, Inc.

El Dorado, Union County, ArkansasTDD# T06-9010-029PAN# EAR0220SAA

I. PURPOSE

On July 6, 1990 the Region 6 Technical Assistance Team (TAT) wastasked by the EPA to continue the site assessment at the Popile,Inc. site in El Dorado, Union County, Arkansas. As part of thisassessment, TAT was tasked to conduct high volume air sampling,expand the land survey of the site, and install temporarypiezometers to obtain information about the groundwater levels inthe area, TAT was also tasked to photodocument the site andconduct a property ownership search.

During this phase of the site assessment, air sampling wasconducted by the EPA Region 6 Emergency Response Branch (ERB) toinvestigate a potential release of air contaminants into theenvironment. Suspected air contaminants include semi-volatileorganics and cogeners of dioxin. Th© potential air contaminationis a result of wood treatment operations in which creosote andpentachlorophenol were used.

The groundwater investigation was conducted to provideinformation needed for assessing removal options and designingon-site containmfinfc structures,

reevelcri paper

TDD#T06-9010-029Page 2

Additional land surveying was conducted to complete the griddingof the site, determine surface elevations and to provide aframework on which to locate piezometer installations, airsaMpler locations and drainage modifications designs.

As tasked in the TDD, a property ownership search was conductedand a plat map of the property was obtained from the Unioncounty/ Arkansas Courthouse.

This report is an addendum to the original site assessment reportcorpiled on the popile, Inc. site and submitted to EPA in draftform under the TDD# T06~8909"19.

II. BACKGROUND

The JPopile, Inc. site is located on southfield Road approximately1/4 mile south of the intersection of Southfield Road and U.S.Highway 82, El Dorado, Union County/ Arkansas ( Attachment A ) ,The property is bordered on the west by Southfield Roa^. theE.C.and H. Railroad on the east and the Bayou de Loutre on thenorth. These boundaries intersect on the north end of the site.A forested area borders the site on the south.

Wood treatment operations began at this 41 acre site in 1947 andcontinued until 1982. In 1984, seven acres of waste impoundmentswere capped with clay under a RCRA closure program. The siteconsists of an abandoned operations area, a large drainage areavoid of any vegetation and an extensive, uncontaminated areasouth and east of the process area. Storage tanks/ pressurevessels and abandoned pipelines are scattered around theoperations araa. A timber and pulpwood operation (independent ofsite ownership) currently stores wood on the uncontaminated areato the south and east.

The site is located approximately 3/4 mile south of the El Doradocity limits. The surrounding area is resid&ntial/commercialalthough no homes are located along the site perimeter. Two ElDorado sewage treatment ponds are located 1/4 mile east of thesite.

The types of materjalpotential responsiblePentachlorophenol (PCP).

suspected to beparty (PRP) are handled by theCreosote and

The scope of contaminated materials to be addressed at this timais approximately 30,000 cubic yards of soil and sludge. Anunknown volume of water, both surface run-oft and groundwater, ispotentially contaminated. Previous site assessments haveattempted to characterise the soil, sludge and watercontamination.

TDD#T06-9010-029Page 3

1X1. OBSERVATIONS

On August 8, 1990, six Region 6 Technical Assistance Teammesftbers began site assessment activities at the Popile, Xnc.site. During the two weeks following August 8,1990, three taskswere accomplished.

(1) Air Sampling

Seven Andersen Model PS-1 High Volume Air Samplers were used tocollect representative ambient air samples from the site. Fivesaaplers were positioned at predetermined locations around theperimeter of the site. Two samplers were located near areas ofthe site that previous sampling data indicated were highlycontaminated ( Attachment D ). Sampler locations were designedto detect a release of contaminants into the breathing aone fromth© site. Based on the predominant wind direction, upwind anddownwind samples were collected. The wind directions and othernecessary weather information were provided by an on-site weatherstation.

The air samplers were first operated for approximately 24 hoursto draw the required air volume for Dioxin Cogener analysis.Seven samples were collected for this analysis. Seven additionalsamples were also collected to be analyzed for Semi-volatileOrganics and Pentachlorophenol (PCP). For the semi-volatile andPCp analysis, a rain shortened period of eight hours operatingtime was used. These fourteen samples, along with theappropriate matrix spike, duplicate and blank samples, were sentto laboratories arranged by TAT under a separate TDD.

After receiving the analytical results from the laboratories, TATvalidated the data, computed the air flow volume for each samplerand calculated the contaminant concentration in air for eachsample ( Attachment E ).

(2) Groundwater study

A Minute-Man portable drilling rig was used to drill six shallowboreholes into which temporary groundwater observation wells(piezometers) were installed. Two additional piezometers wereinstalled in the western, forested portion of the site using aposthole digger to advance the borehole.

Three inch diameter solid flight augers were used to advance theboring. While drilling the borehole, auger cuttings weremonitored to log the texture and moisture content of thematerial. After drilling one foot to two feet into theuppermost water bearing strata, the auger was removed from thehole. A two inch (X.D.) PVC pipe, with a slotted, 24 inch long{screen section, was installed in the borehole and backfilled withsandy material from the borehole. Clay rich native soil was used

TDD#T06"9010-29Page 4

to seal the temporary piezoaetar from surface run-in and a shortstickup section was installed.

These temporary installations were designed to give preliminarywater level information for a short time period and would bedestroyed during the early phases of the anticipated removalaction.

The piezometer location map, along with the table of depths togroundwater, summarize the groundwater data ( Attachment C ).Several existing monitoring wells (installed by others) were alsoused to obtain groundwater information.

(3) Surveying

An Electronic Distance Measurement (EDM) instrument was used tocomplete the surveying of the site. The site was gridded into 50foot by 50 foot squares and an elevation was obtained for eachgrid point. Heavily vegetated portions of the site were notgridded although survey lines and elevations were traversed alongobvious surface drainage pathways.

The additional survey data was used to design waste containmentstructures and surface drainage modifications that would beconstructed during the removal activity at the site. Although nocontour map of the site was produced, the survey informationallowed TAT to accurately place site features as well asinstrument locations on the site map.

ATTACHMENTS^

ABC

H

Site Location MapPiezometer Location MapTable of Groundwafcer InformationAir Sampler Location MapAir Sampling Laboratory Data SummaryRecords of Communication (5 pages)Copies of Logbook (Pages 2-27)Copies of TDD^TOS-^OlO-as and Amendment A

Ecology And fanromaentt lac,TeAaieal AssistAflee TeAfflonY!

CfflCLlS/CAS^: ARD008052508SOPBCK: USGS TOPOGRAPMBC QUADRANGLE:

7.5 MINUTE SERIES

&OPILE, IHC* GROUNHffATER IKFORMATIOM

Eias.gffl er iP2-1

P2"2

P2-3

P2-4

P2-5

P2-6

P2-7

P2"8

MW-A

MW-B

MW-C

Miff-3

MW-5

MW-7

Depth/Elevation to water Surface££2a SECUM fiU££&se Elevatio^

11.00 ft./El.191.5 202.515.05 ft./El.193.3 208.39.10 ft./El.193.9 203.07.90 ft./El.193.2 201.11.05 ft. /El. 185.0 186^.0 *1.90 ft./El.185.1 187.0 *9.25 ft./El.188.8 198.05.40 ft./El.186.4 191.8.50 ft./El.183.5 184.0 *.25 ft./El.183.8 184.0 *

1.25 ft./El.183.3 104.5 *5.45 ft./E1.19l.3 1 9 6 . 7

20.90 ft./ N/A N/A18.25 ft./ M/A N/A

* Approximate elevations

ATTACHMBff C

TOTAL 2 , 3 / 8 , 7 TCDD DIOXIM EQU1VILANTS COMPUTED FROM COGENERANALYSIS OF AIR SAMPLES AT THE POPILE, INC. SITE

SAMPLER i

PS-1PS-2PS-3PS-5PS-6PS-32PS-54

QIOXIM EQUrVILAMT. 1 p'g/M3 1

0.064.760.180.200.020.00 - 3 5

SELECTED HAZARDOUS SEMI-VOLATILE ORGANIC COMPOUNDSDETECTED DURING HIGH VOLUME AIR SAMPLING AT POPILE, INC.

Selected semi-volOrganic Compound

total ug

Anthracene

Phenanthrene

rlucranthene

Pentachlcropeno-1

Sampler Sampler SamplerPS-1 PS-2 PS-3 I

4 : 6 : 4

72 : 110 : 92

3b : 67 : 71

31 : 83 : 150

Sampler^S-5

4

92

58

52

Selected semi-vol SOrganic Compound i

total ug

Anthracene

Phenanthrene• • • f » « » * * « i f l « f t « « « «

rluoranthene

Pentachloropenol

Sampler 5PS-6 I

5

J&

D/

25

Sampler £PS-32 I

5

6""* « « • « * • *

1 3 *

25« > * * • « • *

SamplerPS-54

6

110

61

51

* Sampler operating times approx. 8 hours* Ail: volufftoa drawn varied ^fom 108 to 146 cubic

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——————-———————l TECHNICAL DIRECTION DOCUMENT {TDD)18. Account No.;ECOLOGY AND ENVIRONMENT. INC.

£.AA^<;2u5AA

3A. Priority ^ Sstimate of 5A. fc'PA Site Name:S^uirtft Total Hours:^8ft ^ P^llsMedti-."n <r i /,,.. —————————i————s———————————- Low - ? 56- S^'D No.: j 5C. City / County / Stale:

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Name; ns;u;..&c.\ r~ RCRAPhone: ^ ^RCLA ——

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g. Type of Acsvity: ^ ^^ ^ CgRCLA AS SPECIFtED ABOVE (

C SPCC .j iie Assesaffient C Special Project^ On-Scane Monitoring C Removal Funded C Analytical Pro;ectC Soil) Cleanup Funded C ^Sfrovai PRP (AO/CO) G Corp. Special Project

C On-Site Monitoring C Preparedness .a USTC FEMA

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12, Specific Elements:I/ ueter^^ne grouriUxa^er use in acsa or sits

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7. CERCL1S 10:

AROOC'y052506SA.Comptenon Date:

/^/-3//?0SB.Referenca Info:

C Yes C Anacned^o ^ Pick-up r

1 1 . Desired Reponform:

JS^Qmal ReportC Letter ReportC; Formal BriefingU Other (Specify)

13. Interim Deadlines:

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