ML20154K244

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Revised Preliminary Assessment of United Nuclear Corp Wood River Junction,Ri
ML20154K244
Person / Time
Site: Wood River Junction
Issue date: 03/26/1987
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THIBAULT & ASSOCIATES
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References
24338, NUDOCS 8805270307
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PRELIMINARY ASSESSMENT OF UNITED NUCLEAR COPPOP.ATION I

WOOD RIVER JUNCTION, RIIODE ISLAND j

EPA ID # RID 000885863 I

8 PREPARED FOR:

I RHODE ISLAND DEPARThENT OF ENVIRONMENTAL MANAGEhENT 2CM CANNON BUILDING,75 DAYlS STREET PROV;i)ENCE,RiiODEISLAND 02908 l

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PREPARED BY:

t ENVIRONhENTAL SCIENCE SERVICES A Divisica of Thibault & Associates 235 PROSENADE STREET. PROVIDENCE, RHODE ISLAND 02908 1

.I FEBRUARY 9,1987 i

i REVISED MARCH 26,1987.

l 8805270307 h 820 l

PDR ADOCK DR

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Preliminary Assessment of

_ J, United Nuclear Corporation, Wood River Junction, Rhode Island t

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INTRODUCTION 4

A Preliminary Assessment (PA) of the United Nuclear Corporation (UNC) site in Wood River en Junction, Rhode Island (CERCLIS No. RID 000885863), was performed by Environmental m ~i Science Services, a Division of Thibault and Associates, Inc., under contract to the Rhode i

Island Department of Environmental Management (RIDEM), Division of Air and Hazardous Materials y

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T he documents prepared within comply with the requirements set forth under EPA Superfund legislation (CERCLA). They do not necessarily fulfill the requirements of other EPA

"'l regulations such as RCRA. This PA is not intended to be a definitive study, suitable for 4

planning site remediation, or undertaking enforcement against potentbl responsible parties.

The PA represents the initial phase. of a site screening process set forth by the National c4 Contingency Plan, d

m-R SITE HISTORY w

The United Nuclear Corporation (UNC) site is located at One Narragansett Trail in the Wood R

rdver Junction section of Charlestown, Rhode Island (Figure 1). The UNC property covers Q

approximately 1100 arres southeast of the Pawcatuck River and north of Cedar Swamp Brook and Indian Cedar Swamp. From 1964 to 1980, UNC operated a cold scrap uranium recovery plant. Plant facilities and operations were confined to an active site area covering

l approximately 16 acres. This area contained the process building, offices, warehouse, waste m

water lagoon area, trailers for employee use, and a drinking water well which supplies water

'~ u solely for on-site use (Figure 2).

From 1964 to 1966, waste water from facility operations was discharged via pipeline directly to the Pawcatuck River. From 1966 to 1980, waste water was discharged to on-site lined q

holding / evaporation ponds and trenches (1,6). Leakage from these ponds eventually resulted uj in the formation of a contaminant plume stretching northwestward to the Pawcatuck River and contiguous wetlands west of the river (5,6).

l Chemicals used in the cold scrap recovery process at the plant included nitric and hydrofluoric H

acids, tributyl phosphate, and kerosene, along with smaller amounts of aluminum nitrate, l

calcium hydroxide, mercury, sodium carbonate, sodium hydroxide, and potassium hydroxide.

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Acids were neutralized with lime prior to discharge into holding lagoons and trenches (1).

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'l Plant operations ceased in August,1980, and the facility is currently in the final stages of decontamination and decommissioning. Sediment and soil from holding ponds and trenches y

have been excavated and shipped off site for disposal (6). Cleanup operations are "virtually 3

complete" and some 55 gallon drums containing soil are stored inside one of the buildings awaiting shipment off-site as of March 12,1987 (10). During the site visit conducted as part of this PA,60 to 80 55 gallon drums, apparently empty, were seen outside the nonheast corner l

of the process building (Figure 2). Data on the exact amounts of soil and sediment excavated and removed from the site were not readily available, but information pertaining to the decommissioning of the plant can be obtained from the Charlestown Pubhc Library Public Documents section.

Previous studies of groundwater contamination at the site have been conducted by Oak Ridge Associated Universities, Rhode Island Water Resources Board, and the U.S. Geological i

Survey. Nuclear Regulatory Commission review of the studies and ground water analyses continues as a part of the facility decommissioning process.

I ENVIRONMENTAL SETTING The site is located on Narragansett Trail in Wood River Junction, approxima'ely 1200 feet southeast of the Pawcatuck River (Figure 1)in the Hope Valley. Surrounding land uses are primarily rural residential, with the exception of Carroll Products, Inc. across the river.

l Northwest of the UNC plant and lagoon area lies an open field covering a few acres. A naturally occurring pine and oak forest extends over the remainder of the UNC property and is prevalent in the surrounding Hope Valley.

The Pawcatuck River, Cedar Swamp Brook, and Meadow Brook Pond all lie within one mile of the site. The Paweatuck River flows southwest from the site for approximately 21 miles before discharging to Little Narragansett Bay and Block Island Sound. Cedar Swamp Brook I

flows westward to the northern area ofIndian Cedar Swamp, approximately 2800 feet south of the site, discharging to the Pawcatuck River west of the site. Meadow Brook Pond lies approximately 3300 feet nonhwest of the site, across the Pawcatuck River (7).

Surface water of the Pawcatuck River northeast of the site is Class C (suitable for fish and mildlife habitat, recreational boating, and industrial rocesses and cooling). The remainder of

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I the Pawcatuck River downstream is Class B (suitable for bathing and acceptable for public water supply with appropriate treatment,in addition to Class C uses), with the exception of a small segment in Class C located in Westerly, RI (2).

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N The geology of the Hope Valley consists of various glacial deposits filling a pre-glacial bedrock valley. Glacial till deposits (poorly soned, clays, silts, sands, gravels, and boulders) fann a relatively thin (less than 20 foot) mantle over the bedrock and outcrops on the uplands east of N

the UNC site Glacial outwash deposits (well soned, silts, sands, and gravels) overlying the tillin the Hope Valley area range in thickness from 0 to 300 feet. The outwash deposits form an unconfined sand and gravel aquifer consisting of predominantly medium to coarse sands l

and gravels to about 80 feet below land surface. Mostly nne sands and silts are deposited from 80 feet to bedrock (6). Groundwater in this aquifer flows from upland areas nonhwestward to the Pawcatuck River. The UNC site lies directly over this aquifer, and studies have confimaed I

that the contaminant plume is flowing nonhwestward and discharging to the river and contiguous wetlands (5,6).

It is known that at least two wells are served by the affected aquifer in the immediate area. The N

first well provides water to the employees of UNC in trailer #1 (3). The second well is located east of the river, serving employees of Carroll Products (8). In addition, since there is no public water su ly, all homes in the area are supplied by individual private wells. (There are approximately homes within a one mile radius).

Chemicals exceeding background concentrations in the plume of ground water contamination N

include strontium 90 (250 pC/l), technetium-99 (1350 pC/L), radium-226 (12 pCi/L), radium.

228 (14 pCi/L), aluminum (100 ug/L), boron (400 ug/L), sodium (dissolved,21 mg/L), nitrate (600 mg/L), potassium (25 mg/L), zine (70 ug/L), chloride (180 mg/L), fluoride (2.7 mg/L),

and sulfate (38 mg/L). Electrical conductivity of groundwater has been detected as high as l

4500 umhos/cm. Analyses of Pawcatuck River water samples showed no contamination by radioactivity, zine, nitrate, chloride, or sulfate. However, analyses of Pawcatuck River sediment showed elevated levels of uranium (gross-alpha,2634 mg/L), strontium-90 (gross-N beta, 3462 pCi/L), and cesium-137 (gross beta, 3584 pCi/L).

Nitrate and strontium 90 contamination extends from the source area approximately 600 meters west towards the River, but is confined to the coarser sands and gravels 80 feet below land surface (Figures 3-6)(5,6).

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Nitrate Concentration in Groundwater at United Nuclear Site, May 1983

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Figure '4 Nitrate Concentration in Groundwater at United Nuclear Site, October, 1982

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Figute E Strontiu -90 concentration in Groundwater -

at United Nuclea'r Site, October, 1982 E

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gi1 CONCLUSIONS AND RECOMMENDATIONS p

Several studies have shown contamination of ground water between the site and the river by alpha and beta emitters, as well as nitrate,2.ine, aluminum, chloride, fluoride, and sulfate. The i

plume has been extensively mapped by the USGS using electrical conductivity measurements e

and laboratory analyses of ground water. An observed release of strontium 90, technetium 99, radium 226, boron, sodium, nitrate, potassium, zinc, chloride, fluoride, and sulfate into the environment has been documented. However, removal of contaminated material from the site

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is virtually complete as of March, 1987 (10). All but one unspecified on site well contain

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below Nuclear Regulatory Commission standards for beta emitters. However,in an unknown W

number of wells, nitrate remains above the EPA drinking water standard of 10 mg/L (9).

M It should be noted that radium, which has been detected in the plume, and kerosene, which was L.

used in the cold-scrap recovery process, are known carcinogens. In.ormation to indicate the possibility of kerosene contanunation in groundwater was not readily available. The presence of carcinogens may affect the suitability of groundwater as a drinking water supply, as v, ell as the classification of downstream surface waters. It is therefore recommended that a Site Investigation be carried out to determine the amounts of contaminants present, and their impact on the suitability of ground and surface waters for various uses. The site is given a medium priority for the following reasons:.

1. Contaminants seem to be diluted in the Pawcatuck River to below detection,
2. No significant receptors appear to be within the plume of contamination, and l

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3. Most of the contamination source has been removed and the remainder will soon be removed.

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N REFERENCES

1. Correspondence form C.E. Bowers, General h!anager, Fuel Recovery Ope ation, United Nuclear Corporation, to John Quinn, RI State De anment of Environmental hianageme Solid Waste hianagement Program, January 12, 978.

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2. Department of Environmental hianagement, Division of Water Resources, Water Standards hiap,1984.
3. Field Inspection Repen, Thibault & Associates, January 21,19S7.(Attached)
4. Nuclear Regulatory Commission Region I Inspection Report No. 70 820/S6.

5 Ryan, Barbara J., Robert bl. Desaulniers, et al, Geohydrologic Data for a Low Level Radioactive Contamination Site, Wood River Junction, Rhode Island. Open File Rep 84-785, US Geological Suney,1985.

6. Ryan, Barbara J. and Kenneth L. Kipp, Radioactive Ground Water Contamination from

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Cold Scrap Recovery Operation, Wood River Junction, Rhode Island, Open File Rep

-d 84-066, US Geological Survey, July 1934,

7. US Geological Survey, RI Carolina Quadrangle,7.5 h!inute Topographic Series,1975.
8. Documentation Records for Hazard Ranking Score, Draft, for Carroll Products, Wood River Junction, RI, prepared by hiichele Travers, June 28,1982.
9. Telephone cor.versation with Bill Crow, Nuclear Regulatory Commission. February 5, 1987, initiated by Diane J. Lazams,'Ihibault & Associates, Providence, RI.
10. Telephone conversation with Robert Gregg, Plant h!anager, United Nuclear Corporation Uncasville, CT., biarch 12,1987, Providence, RI.

initiated by Diane J. Lazarus, Thibault & Associates, E

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'N POTENTIAL HAZ ARDOUS WASTE SITE L IDE N UF4C AtioN

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' 'k'i' " IYb' M '5863 PART 1. SITE INFORM ATION AND ASSESSMENT

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PRELIMINARY ASSESSMENT POTENTIAL HAZ ARDOUS WASTE SITE

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P ART 3

  • DESCRIPTION OF H AZARDOUS CONDITIONS AND INCIDENTS N

N HAZ ARDou$ CONDITIONS AND INCIDENTS 013 A GADvNDW AT[M CQNT AMW. AtcN gngn c2 C C4sl A%TD(DAT( lW l

C PoTENM C Anl G{ D C3 Pops. AtcNeoteNiiAuv AFFicitD c4 Naaan.t Discuf cq ContaTaination detected by conductivity and chemical analyses.

Plume is 2000 ft. long, 300 ft, wide, within upper 80 f eet of saturated thickness, according to USGS studies, i

on t%s ss=F Act w Ana coNTAM* ATcq UnknoVn Ot = o8IIn*IOIO*II M ~" I

,C QTINM C w G(o c3 PcevutoN PottNnauY AFFacT D c4Namafugogg uioN Ground water surfaces into the Pawcatuck River and swa=py area west of the river.

Pawcatuck River sediment analyses indicates contamination, However, contamination of M

Pawcatuck River surface water has not been detected.

01 C c cosTAusarcN cr As c2 O c e rm.tD DAT{

}

O pQqqg g Agg gg g c3 PCPJ.ATcN POTENTIALLY AFF(cTLD E

04 h AMATr.1 D(Matence E

c13 D F AI. tap ose T CoNMce.s i

03 eaavufcN ecT(NTIALLY AFFiCTED UnknoVn c2 C o854410 'CATE i

I PottN h C Aaf GE D g4 ggy,g gggg

?ossibility of kerosene having been discharged to lagoons and trenches c.ay pose a fire hazard.

_c' Et CW:t co"T Act C2 O castm<toicAf t t eo n w C u ct:

c) PvPusicN PoTINTiALLY AFFECTED l,U k n Sb'U C4 NAMAtht C(sCUTcN Only part of the property is fenced. Some conta=1nated soil cay still be present.

( 3 4g( A pot (NTALT AFF(CTED ci r cos7wsATcN of so.

C E obsta gDicAT

!ou C Poit%rA C Aaroro

!6 C4 N AAAAn.[ D(MUToN

.E ofthecontaminatIdsoilinthelagoonareahasbeenremoved, Most 14 blocks (3 0 ft remain to be re=oved as of 8/85. Cleanup as'of March, 193 7 is "virtually cc plet e."

t ci a o ta so.s w Atta cost AusATc" Unknom c2ccesta to cair --

'I d eon %w C Aussco C3 POPuuicN Pof ENisALLY AF FICT[0 C4biAAAAfr 1 t< Z mPf og Trailer #1, where 3 people work, is served by a ground water well approximately 20 t

feet west of the trailer. A well serving an unknown nu=ber of Carroll Products, I r. c employees lies west of the Paveatuck River.

ctD M woAximEAPoSURLw.FAv C3 wonatR3 PCTENnA11Y AFFECTED 3

C2 C CasER.EDIDATE

)

3 PoTIA %

C AalatD 04 6. AAAAft.T t4 EUroN Usually on site are the plant manager, caretaker, and security guard, et C t PoPVLAfoN (IPosgRE/INJURV C ? [ oEs(R.10 (OATE

)

C PoMNM C Auj Gt Q C3 PoPvatcN POTENT 6Adv A8FECTED C4 NAAA4fl.1 CtMUTON t

t 1

R n

POTENTIAL H AZ ARDOUS WASTE SITE 1.'3 E N T *'C 'D O N o

A rac'iu'"^av ^$stssac"'

'vi ' 't a = 5se3 4_q PART 3 DESCRIPTION OF HAZA ADOUS CONDITIONS ANDINCIDENTS

11. H A1ARDov5 CONDITIONS AND INCIDENTS,c-01 C J D AMAGE TO F ORA L

C2 O DELER.to (D ATI' C POTINTts c 4211otD C4 NAmuti.1 Cf 5CR.PTCN g

I s__m f' 'l Cl D R CAu AGE TO F AV4A 02 O OSMR4D (DAlt-

)

O PCTINTM C wGt0 04 N AAR AThi C(SCR.PicN

.u i

M R

i I

L--J 01 O L CONT AMMATCN OF FOOD CHAIN 02 O CEtm.10 (DATE

-)

O POTENThat C WGcD 04 N ARRativt D(SCR.PTced r-,

h L__ -j 01 C W VNSTAaJ CONT A%utNT OF v ASTES C2 C OES(Retd (D ATE _

l C PCTIN'nu C wacD M

%.e %

g e,

C3 POPuuTCN POTEN'nAuv AHLCTED C4 NAAAAfrit DCMNFTCN E

Cl C h DAu AGE TO OFFSff t PMOPERrf C2 O C60Em tD (DAtt

)

O PCTENTA O WC.co C,4 haAAAfrit C($CR,PTON 01 D 0 CON'T AphatcN OF SE *t RS STCRu DRANS. wwTPs C2 C C45tRet0 (DAfg

)

O PCTENM O AWGED 04 h4ARAthT C(SCR.PTON E

E 01 O P LL f 0%rVNavTmDR.2ED DVWPwv3 C2 C Cesta.tD (OATE

)

C FCTINTW O A d GED C 4 N ARAAfi.T C(Mst,PTCN E

Ca Cm9 PicN C# A.NY CTmIR RNOWN POTEN7 4, OR w GED MALAAos E

E lit. TOT AL POPULATX>N POTENTIALLY AFFECTED: Unknam IV. L O M uCNTS Most of the contamination source has been removed as of March 1987.

t V. s o u R C t s o r iN F C>a w A T:o N,c..

....., m.

_. u NRC Inspection Report 70-820/86-01 Dr ft HRS for Carroll Products, Wood River Junction, RI E/5/82 Fi 1d Investigation Report, Thibault 6 Associates, 1/21/87 n7,rt M - 0 4,. US Cenlorical Survey n,m - efic e pa n*= m t, i M "

Open File Report 84-725, US Geological Survey Robert Gregg, USC Plant Manager, 3/12/87 m

i.

I FIELD REPORTS

!Q Site Name: UNITED NUCLEAR CORPORATION 7. -.,

t_g i

Site Location: One Narragansett Trail

' Wood River Junction, R1 02954 EPA Site Number: RID 000885863 Site Suc: mary: From 1960 to 1980, UNC operated a cold scrap recovery plant. Low-leve r-radioactive liquid wastes were discharged to lined evaporation ponds.

Leakage from the ponds resulted in a plune of contaminated groundwater extending f rom the lagoon area to the Fawcatuck River.

. /q Date: January 21, 1987 L_j l-Veather Conditions: Clear, f ew clouds, 30 - 40*F, 1 - 4" of snow cover.

t_d Directions to Site: Rte. 2 south (South County Trail), right onto Rte. 112 notth

[

3r,rn14e, n.4 en,n

. b--

' 1,re nn*n ven_ oi Aren.

,ee4,n r, to):

PrnAn-te en_cr enkn inde nnen

  • !, r r s p a n e_ e r e Tr3 4 '1 Tdo init after crossing the Pawcatuck River, to continue on Narragansett

'r"]

Trail.

UNC is on the left.

I Personnel:

g Richard Hit tincer and Diane tuaruc of Thibault 6 Associater Local Contacts:

Safety Considerations: None M

l l.

Sampling Program: None Chain of Custody:

Yes (At tach Iorus) 1 Obeervations:

(Attach extra sheets if required)

See attached sheet.

l l

i El

-r

II 4

DUITOM2ir4L SCIECE SER/ ICES FIELD REPORT UNITED ??JCLEAR CORICPATIQi

'IllIBAlH$' & ASSOCIATES FOOD RIVER JU?CTIQi, RI Page 2 of 3 OBSER/ATIais:

M tb spoke with John Mnphy, one of the caretakers of the site who had becn 4

workiro tNre almost 20 years.

11e gave us tM follcuirg na.~es ard telephcne nmbers to cbtain r:cre informtion:

lbbert Grogg, plant mnager 1-203-848-2869 E

Farl Iblgerson, site mnager 346-7701 (Trailer i1)

John Maphy also offered tM follcuing informtion:

1.

Oakridge thiversity, in charge of deocrmissioning the plet, Ms been performing renthly analyses for several years.

Copies of results are sent E

to NRC and to tM "State".

Ground water is analyzed for alpha and beta 4

radiation, iron and nitrate. Once a year h"aC sanples with Oakridge.

2.

trC owns an estimated 1100 acres that extends frcm the eastern fence to the Pascatuck Rim r.

3.

Drinkirg water for Trailer il is prctvided b/ a well just west of the trailer, upgradient of the pime of contamination.

4.

Only the front part of the prcpy is fenced in leaving the northwestern border open to the surroundire forest.

'Ibe security guard, also present, rentioned that he had seen on site deer, skunks, ard culs, t

t t

t I

EhvIFQd'DTTAL SCIDCE SEWICES FIELD REPORT UhTD:D NUCLE 7% CORPOPATION

[9 THIBAULT & ASSCCIATES FOOD RIVER JtRCTICti, RI I

Page 3 of 3 C

uJ fl LJ By penission of John Furphy ad Farl Iblgerson (via telephone conversation with Jchn Marphy), we were allcued to enter the site to cbserve current physical corditions. A sketch of the site is attached.

1.

An open field to the north and northwest is surrcunded by a naturally occurring forest. A pair of osprey were observed in that area.

E 2.

Sixty to 80 barrels were stored outside at the torthwest corner of the prcduction building.

3.

Just cast of the barrels a small area had been excavated thrcugh pave ent dckn alrest four feet leaving approxirately three pipelires g

4.

Detseen the barrels and the prcdaction huilding another mall area Md been excavated dckn alrcst four feet.

5.

Iarge cbuble doors at the back of the prcdaction building were open ard a;pearcd to have been in that position for a period of tire.

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