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PUBLIC HEALTH ASSESSMENT

WEST KINGSTON TOWN DUMP
AND
UNIVERSITY OF RHODE ISLAND (PLAINS RD) DISPOSAL AREA (URI)
SOUTH KINGSTON, WASHINGTON COUNTY, RHODE ISLAND


APPENDIX A: SITE AREA MAP


Figure 1. Site Area



APPENDIX B: CONTAMINANT DATA TABLES

The data tables include several abbreviations for clarifyinginformation:

Comparison Values (CV) Abbreviations
      * EMEG Environmental Media Evaluation Guide
      * CREG Cancer Risk Evaluation Guide
      * RfDG Reference Dose-based Guide
      * LTHA Lifetime Health Advisory
      * MCL Maximum Contaminant Level
      * ALG Action Level Guide
      * OSV Other Selection Value

Data Clarifier Abbreviations
      * ppb parts per billion
      * ND not detected
      * NI no information
      * NA no analyses
      * J estimated value



Table 2.

Contaminant Concentrations in On-site Wastes Taken From One Drum
Contaminant Concentration
ppb
(Reference)
Year Comparison Value
ppb Source
Chloroform ND
(2)
1991

TCE ND
(2)
1991

PCE ND
(2)
1991

BAP ND
(2)
1991

BEHP ND
(2)
1991

Gasoline NI


Aldicarb NI


Aluminum NI
(2)
1991

Lead ND
(2)
1991

Manganese NI
(2)
1991

Thallium NI
(2)
1991





Table 3.

Contaminant Concentrations in On-site Groundwater Monitoring Wells
ContaminantConcentration
ppb
(Reference)
YearComparison Value
ppbSource
ChloroformND
(3)
1987
1989


TCEND
(3)
1987
1989


PCEND - 10J
(3)
1987
1989
5MCL
BAPND
(3)
1989

BEHP6J - 76 15*
(3)
19894MCL
GasolineNI


AldicarbNI


Aluminum145* - 11,600
(3)
19891,400 OSV
LeadND* - 22
(3)
198715ALG
Manganese242* - 73,000
(3)(4)
1973
1974
1989
1,000RFDG
ThalliumND* - 3.6
(3)
19890.4LTHA
* Values for on-site upgradient well




Table 4.

Contaminant Concentrations in On-Site Pond Water
Contaminant Concentration
ppb
(Reference)
Year Comparison Value
ppb Source
Chloroform ND
(2)(3)
1987
1991


TCE 10 - 72
(2)(3)
1987
1991
none
PCE 9 - 41
(2)(3)
1987
1991
none
Benzo(a)pyrene NI
(2)(3)
1987
1991


BEHP ND
(3)
1987

Gasoline NI


Aldicarb NI


Aluminum NI
(2)(3)
1987
1991


Lead 1* - 12*
(2)(3)
1987
1991
none
Manganese NI
(2)(3)
1987
1991


Thallium NI
(2)(3)
1987
1991


* Contaminant detected only in water sample taken from pond on URI portion of site.




Table 5.

Contaminant Concentrations in On-Site Pond Sediment
Contaminant Concentration
ppb
(Reference)
Year Comparison Value
ppb Source
Chloroform ND
(2)
1991

TCE ND
(2)
1991

PCE ND
(2)
1991

BAP ND - 35J
(2)
1991 none
BEHP 21* - 252**
(2)(3)
1987
1991
none
Gasoline NI


Aldicarb NI


Aluminum NI
(2)(3)
1987
1991


Lead 2,900 - 8,000
(2)
1991 none
Manganese NI
(2)(3)
1987
1991


Thallium NI
(2)(3)
1987
1991


* Sample from pond on West Kingston Dump property
** Sample from pond on URI property




Table 6.

Contaminant Concentrations in On-Site Surface Soils
Contaminant Concentration
ppb
(Reference)
Year Comparison Value
ppb Source
Chloroform ND
(2)
1991

TCE ND
(2)
1991

PCE ND
(2)
1991

BAP 42J - 240J
(2)
1991 none
BEHP ND - 1,400
(2)
1991 none
Gasoline NI


Aldicarb NI


Aluminum NI
(2)
1991

Lead 42,000
(2)
1991 none none
Manganese NI
(2)
1991

Thallium NI
(2)
1991





Table 7.

Contaminant Concentrations in On-Site Subsurface Soils
Contaminant Concentration
ppb
(Reference)
Year Comparison Value
ppb Source
Chloroform NA
(3)
1987

TCE Tentatively identified, not quantified
(3)
1987

PCE Tentatively identified, not quantified
(3)
1987

BAP NA
(3)
1987

BEHP NA
(3)
1987

Gasoline NI


Aldicarb NI


Aluminum NA
(3)
1987

Lead NA
(3)
1987

Manganese NA
(3)
1987

Thallium NA
(3)
1987





Table 8.

Contaminant Concentrations in Off-Site Ground-water Monitoring Wells
ContaminantConcentration
ppb
(Reference)
YearComparison Value
ppbSource
ChloroformND
(3)
1987
1989


TCEND
(3)
1987
1989


PCEND
(3)
1987
1989


BAPND
(3)
1987

BEHPND - 544
(3)
19874 MCL
GasolineNI


AldicarbNI


AluminumND
(3)
1989

LeadND
(3)
1987

Manganese20 - 69
(4)
19731,000RfDG
ThalliumND
(3)
1989



Table 9.

Contaminant Concentrations in Private DrinkingWater Wells at Three Nearby Residences That are Now Connected to Public Water
ContaminantConcentration
ppb
(Reference)
YearComparison Value
ppbSource
ChloroformND
(3)
1987

TCEND - 90
(3)
19875MCL
PCEND - 52
(3)
19875 MCL
BAPNA
(3)
1987

BEHPNA
(3)
1987

GasolineND - 11
(3)
1987none
AldicarbNI


AluminumNA
(3)
1987

LeadNA
(3)
1987

ManganeseNA
(3)
1987

ThalliumNA
(3)
1987





Table 10.

Contaminant Concentrations in Off-Site Private Drinking Water Wells Other Than the Three Nearby Residences that are now Connected to Public Water
ContaminantConcentration
ppb
(Reference)
YearComparison Value
ppbSource
ChloroformND - 9 *
(3)(5)
1987
thru
1991
5.7CREG
TCEND - 1 **
(3)(5)
1987
thru
1991
5MCL
PCEND - 2 **
(3)(5)
1987
thru
1991
5MCL
BAPNA
(3)(5)
1987
thru
1991


BEHPNA
(3)(5)
1987
thru
1991


GasolineNI


AldicarbND - 12**
(5)
1990
1991
2RfDG
AluminumNA
(3)(5)
1987
thru
1991


LeadNA
(3)(5)
1987
thru
1991


ManganeseND - 0.09 **
(3)(5)
1987
thru
1991
1,000RfDG
ThalliumNA
(3)(5)
1987

* East of Chipuxet River
** West of Chipuxet River



Table 11.

Contaminant Concentrations in Public Wells and Water Systems (Kingston Water District and University of Rhode Island Water Systems)
ContaminantConcentration
ppb
(Reference)
YearComparison Value
ppbSource
ChloroformND (6)1984
1988
thru
1991


TCEND (6)1979
1984
1988
thru
1991


PCEND (6)1979
1984
1988
thru1991


BAPNI


BEHPNI


Gasoline (and"hydrocarbons")ND (6)1990
1991
none
AldicarbND - 2*
(6)
19842RfDG
AluminumNI


LeadND - 0.007
(6)
1979
1984
1988
thru
1991
15ALG
ManganeseND - 0.23
(6)
1979
1984
1988
thru
1991
1,000RfDG
ThalliumNI


* Data for Kingston Water District only



Table 12.

Contaminant Concentrations in Surface Water at Hundred Acre Pond
ContaminantConcentration
ppb
(Reference)
YearComparison Value
ppbSource
ChloroformND
(3)
1987

TCEND
(3)
1987

PCEND
(3)
1987

BAPNI
(3)
1987

BEHPND
(3)
1987

GasolineNI


AldicarbNI


AluminumNI
(3)
1987

LeadND
(3)
1987

ManganeseNI
(3)
1987

ThalliumNI
(3)
1987


APPENDIX C: PUBLIC COMMENTS

The West Kingston Town Dump and University of Rhode IslandDisposal Area public health assessment was available for publicreview and comment in local libraries for a 30-day period endingNovember 12, 1992. The public comment period was announced inlocal newspapers. In addition, the public health assessment wassent to several individuals or organizations. One set ofcommments was received. Specific comments and responses aresummarized below.

Comment 1:

EPA reported the site was finalized on their National PrioritiesList (Final Rule) in October 1992.

    Response:

The public health assessment has been revised.

Comment 2:

USEPA reported that Figure 1 does not seem to accurately depictthe relative areal extent of the two disposal areas; the commentwas later rescinded.

    Response:

No revision required.

Comment 3:

USEPA reported they plan to gather data to characterizecontamination at the site and contiguous areas.

    Response:

The public health actions section of the public health assessmenthas been augmented to reflect the proposed data gathering.



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