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PUBLIC HEALTH ASSESSMENT

TRI-COUNTY LANDFILL WASTE MANAGEMENTOF ILLINOIS
SOUTH ELGIN, KANE COUNTY, ILLINOIS



APPENDIX A. FIGURES




Figure 1. Regional Site Location Map

/
Figure 2. Tri-County and Elgin Landfills


Figure 3. Private Well Locations


Figure 4. Public/Private Well Sampling Locations


Figure 5. Proposed Remedial Alternative


Figure 5b. Proposed Remedial Alternative


Figure 6. Soil Boring and Monitoring Well Location Map


Figure 7. Surface Soil Sampling Locations


Figure 8. Test Pit Locations


Figure 9. Surface Water and Sediment Sampling Locations


Figure 10. Cross Section Location Map


Figure 11a. Stratigraphic Cross Section A-A'


Figure 11b. Stratigraphic Cross Section B-B'


Figure 11c. Stratigraphic Cross Section C-C'


Figure 11d. Stratigraphic Cross Section D-D'


Figure 11e. Stratigraphic Cross Section E-E'


Figure 11f. Stratigraphic Cross Section F-F'


Figure 11g. Stratigraphic Cross Section G-G'


Figure 11h. Stratigraphic Cross Section H-H'


Figure 12. Boring and Well Locations, Elgin,
Tri-County, and Woodland Landfills


Figure 13. Cross Section of the Elgin and
Tri-County Landfills


Figure 14. Topography of the Bedrock Surface


Figure 15. Thickness of the Deep Sand and
Gravel Deposits in the Buried Newark Bedrock Valley


Figure 16. Cities around the Tri-County
and Elgin Landfills


Figure 17. Wells around the Tri-County
and Elgin Landfills


Figure 18. Semi-circular Cross Section
Around the Tri-County and Elgin Landfills


Figure 19. Top of Clay Contour Map


Figure 20. Flow Direction of the
Shallow Groundwater (August 1989)


Figure 21. Flow Direction of the
Shallow Groundwater (February 1991)


Figure 22. Flow Direction of the
Intermediate Groundwater (August 1989)


Figure 23. Flow Direction of the
Intermediate Groundwater (February 1991)


Figure 24. Flow Direction of the
Bedrock Groundwater (August 1989)


Figure 25. Flow Direction of the
Bedrock Groundwater (February 1991)


APPENDIX B. TABLES

Table 1.

Organic chemicals in on-site shallow groundwater, June 1989 to December 1990 (WW Engineering and Science, 1991).
ChemicalBackground Monitoring Wells
(ppb)		Non- Background Monitoring Wells
(ppb)		Comparison Value
(ppb)		Source of Comparison Value
Volatile Compounds
BenzeneN.D.N.D.-271.2CREG
2-ButanoneN.D.N.D.-81,000200LTHA
ChloroethaneN.D.N.D.-74----
1,1-DichloroethaneN.D.N.D.-16----
1,2-DichloroetheneN.D.N.D.-18070LTHA
2-HexanoneN.D.N.D.-70----
TetrachloroetheneN.D.N.D.-130.7CREG
TrichloroetheneN.D.N.D.-243CREG
Vinyl ChlorideN.D.N.D.-330.2EMEG
Semi-volatile Compounds
bis(2-Chloroethyl) etherN.D.N.D.-80.32CREG
bis(2-Ethylhexyl) phthalateN.D.N.D.-982.5CREG
DibenzofuranN.D.N.D.-5----
2-MethylnaphthaleneN.D.N.D.-5----
4-MethylphenolN.D.N.D.-73----
NaphthaleneN.D.N.D.-2320LTHA
PentachlorophenolN.D.N.D.-90.29CREG
Pesticides
AldrinN.D.N.D.-0.50.0021CREG

-- = Data not available.
N.D. = Not detected.

Table 2.

Inorganic chemicals in on-site shallow groundwater, June 1989 to December 1990 (WW Engineering and Science, 1991).
ChemicalBackground Monitoring Wells
(ppb)		Non-Background Monitoring Wells
(ppb)		Comparison Value
(ppb)		Source of Comparison Value
AntimonyN.D.N.D.-423LTHA
ArsenicN.D.-1.4N.D.-53.73RfD
Barium38.6-116N.D.-1660700RfD
BerylliumN.D.-0.5N.D.-0.70.0081CREG
CadmiumN.D.N.D.-4.62EMEG
LeadN.D.N.D.-213----
ManganeseN.D.-228N.D.-12,0001000RfD
MercuryN.D.-0.79N.D.-2.32LTHA
NickelN.D.-6.0N.D.-168100LTHA
ThalliumN.D.N.D.-13.40.4LTHA
VanadiumN.D.N.D.-20.320LTHA

-- = Data not available.
N.D. = Not detected.

Table 3.

Organic chemicals in on-site intermediate groundwater, June 1989 to November 1990 (WW Engineering and Science, 1991).
ChemicalBackground Monitoring Wells
(ppb)		Non-Background Monitoring Wells (ppb)Comparison Value
(ppb)		Source of Comparison Value
Volatile Compounds



BenzeneN.D.N.D.-101.2CREG
ChloroethaneN.D.N.D.-40----
1,1-DichloroethaneN.D.N.D.-16----
1,1,1-TrichloroethaneN.D.-5N.D.-5----
Vinyl chlorideN.D.50.2EMEG
Semi-volatile Organic Compounds



bis (2-Ethylhexyl) phthalate

N.D.N.D.-1102.5CREG

-- = Data not available.
N.D. = Not detected.

Table 4.

Inorganic chemicals in on-site intermediate groundwater, June 1989 to November 1990 (WW Engineering and Science, 1991).
ChemicalBackground Monitoring Wells
(ppb)		Non-Background Monitoring Wells
(ppb)		Comparison Value (ppb)Source of Comparison Value
AntimonyN.D.N.D.-21.03LTHA
ArsenicN.D.-1.1N.D.-31.83RfD
Barium28.2-10338.2-1590700RfD
BerylliumN.D.-0.5N.D.0.0081CREG
CadmiumN.D.N.D.-4.62EMEG
ChromiumN.D.N.D.-24050RfD
Fluoride320-1120140-1890600RfD
LeadN.D.N.D.-18.5----
ManganeseN.D.-91N.D.-24401000RfD
NickelN.D.-7.1N.D.-149100LTHA

-- = Data not available.
N.D. = Not detected.

Table 5.

Organic chemicals in on-site deep groundwater, June 1989 to September 1990 (WW Engineering and Science, 1991).
ChemicalBackground Monitoring Wells
(ppb)		Non-Background Monitoring Wells
(ppb)		Comparison Value
(ppb)		Source of Comparison Value
Volatile Compounds



ChloromethaneN.D.N.D.-243LTHA
Semi-volatile Compounds



bis(2-Ethylhexyl) phthalateN.D.N.D.-34MCL

-- = Data not available.
N.D. = Not detected.

Table 6.

Inorganic chemicals in on-site deep groundwater, June 1989 to November 1990 (WW Engineering and Science, 1991).
ChemicalBackground Monitoring Wells
(ppb)		Non-Background Monitoring Wells
(ppb)		Comparison Value
(ppb)		Source of Comparison Value
ArsenicN.D.-3.3N.D.-11.03RfD
BerylliumN.D.-0.5N.D.0.0081CREG
Fluoride300-520440-1200600RfD
LeadN.D.N.D.-4.6----

-- = Data not available.
N.D. = Not detected.

Table 7.

Organic chemicals in on- and off-site private wells, September to October 1990 (WW Engineering and Science, 1991).
ChemicalSand and Gravel Wells (ppb)Bedrocka Wells (ppb)Unknown Aquifer Wells (ppb)Comparison Value (ppb)Source of Comparison Value
Volatile Compounds




BenzeneN.D.N.D.-3N.D.1.2CREG
BromodichloromethaneN.D.-2N.D.N.D.0.27CREG
ChloroethaneN.D.0.6-4N.D.----
ChloroformN.D.-12N.D.N.D.5.7CREG
DibromochloromethaneN.D.-2N.D.N.D.0.42CREG
1,1-DichloroethaneN.D.N.D.-2N.D.----
1,2-DichloroethaneN.D.0.8-2N.D.0.38CREG
Semi-volatile Organic Compounds




bis(2-Ethylhexyl) phthalateN.D.-7N.D.N.D.-2a4MCL

a On-site.
-- = Data not available.
N.D. = Not detected

Table 8.

Inorganic chemicals in on-site private wells, September to October 1990 (WW Engineering and Science, 1991).
ChemicalBackground Bedrock Wells
(ppb)		Non-Background Bedrock Wells
(ppb)		Unknown Aquifer Wells (ppb)Comparison Value (ppb)Source of Comparison Value
Antimony--N.D.N.D.-3.23LTHA
Beryllium--N.D.N.D.0.0081CREG
ChromiumN.D.N.D.-409N.D.50RfD
LeadN.D.N.D.-1.0N.D.-1.115 AMCL
NickelN.D.N.D.-146N.D.100LTHA
Thallium--N.D.-1.01.2-20.4LTHA

-- = Data not available.
N.D. = Not detected.
A = Action level for drinking water (USEPA)

Table 9.

Organic chemicals in on-site surface soils, May 1989 to October 1990 (WW Engineering and Science, 1991).
ChemicalBackground
(ppb)		On-site
(ppb)		Comparison Value
(ppb)		Source of Comparison Value
Semi-volatile compounds




AcenaphthaleneN.D.N.D.-78----
Benz(a)anthraceneN.D.N.D.-1500160CREG
Benzo(b)fluorantheneN.D.N.D.-2300----
Benzo(k)fluorantheneN.D.N.D.-2300----
Benzo(g,h,i)peryleneN.D.N.D.-680----
Benzo(a)pyreneN.D.N.D.-1300----
Benzyl alcoholN.D.N.D-170----
bis(2-Ethylhexyl) phthalateN.D.-110N.D.-440050CREG
ChryseneN.D.N.D.-1600----
Dibenz(a,h)anthraceneN.D.N.D.-250----
DibenzofuranN.D.N.D.-150----
1,4-DichlorobenzeneN.D.N.D.-650----
Ideno(1,2,3-c,d)pyreneN.D.N.D.-600----
2-MethylnaphthaleneN.D.N.D.-420----
4-MethylphenolN.D.N.D.-780----
NaphthaleneN.D.N.D.-300----
N-Nitroso-di-propylamineN.D.N.D.-120100CREG
PhenanthreneN.D.N.D.-2900----
1,2,4-TrichlorobenzeneN.D.N.D.-58----
2,4,5-TrichlorophenolN.D.N.D.-49----

-- = Data not available.
N.D. = Not detected.

Table 10.

Inorganic chemicals in on-site surface soil, May 1989 to September 1990 (WW Engineering and Science, 1991).
ChemicalBackground
(ppm)		On-site
(ppm)		Comparison Value
(ppm)		Source of Comparison Value
AntimonyN.D.N.D.-10.50.8RfD
Arsenic4-5.42.4-30.30.6RfD
Barium140-17418.2-275140RfD
BerylliumN.D.-0.43N.D.-1.30.16CREG
CadmiumN.D.N.D.-2.00.4EMEG
Chromium13.2-20.41.4-31.510RfD
Lead14.5-32.96.4-179----
Manganese636-1100197-2040200RfD
MercuryN.D.N.D.-0.28----
Nickel11.6-18.95.3-45.940RfD
ThalliumN.D.-0.44N.D.-0.40----
Vanadium26.6-37.312.2-41.820LTHA

-- = Data not available.
N.D. = Not detected.

Table 11.

Organic compounds in on-site soil at various depths, May 1989 to October 1990 (WW Engineering and Science, 1991).
ChemicalBackground
(ppb)		0.5-2.5 Feet
(ppb)		2.5-5 Feet
(ppb)		5-10 Feet
(ppb)		13-25 Feet
(ppb)		27.5-40 Feet
(ppb)		Comparison Value
(ppb)		Comparison Value Source
Volatile compounds







2-ButanoneN.D.N.D.N.D.N.D.N.D.N.D.- 130----
4-Methyl-2-pentanoneN.D.N.D.N.D.N.D.N.D.N.D.-64----
TrichloroetheneN.D.N.D.-1N.D.N.D.N.D.-2N.D.-10----
Semi-volatile compounds







Benz(a)anthraceneN.D.N.D.N.D.- 440N.D.N.D.N.D.160CREG
Benzo(b)fluorantheneN.D.N.D.N.D.-440N.D.N.D.N.D.----
Benzo(k)fluorantheneN.D.N.D.N.D.-440N.D.N.D.N.D.----
Benzo(g,h,i)peryleneN.D.N.D.N.D.-87N.D.N.D.N.D.----
Benzo(a)pyreneN.D.N.D.N.D.-110N.D.N.D.N.D.----
Benzoic acidN.D.N.D.-110N.D.N.D.N.D.N.D.----
bis(2-Ethyl-hexyl)phthalateN.D.N.D.N.D.-100N.D.-120N.D.-110N.D.-5900.05CREG
ChryseneN.D.N.D.-73N.D.-350N.D.N.D.N.D.----
N-Nitroso-diphenylamineN.D.-110N.D.N.D.N.D.N.D.N.D.100EMEG
PhenanthreneN.D.-52N.D.-120N.D.-160N.D.N.D.N.D.----
Pesticides







beta-Benzene hexachlorideN.D.N.D.N.D.N.D.-56N.D.N.D.0.39CREG

-- = Data not available.
N.D. = Not detected.

Table 12.

Inorganic compounds in on-site soil at various depths, May 1989 to October 1990 (WW Engineering and Science, 1991).
ChemicalBackground
(ppm)		0.5-2.5 Feet
(ppm)		2.5 - 5 Feet
(ppm)		5 - 10 Feet
(ppm)		13-25 Feet
(ppm)		27.5-40 Feet
(ppm)		Comparison Value (ppm)Source of Comparison Value
AntimonyN.D.N.D.N.D.N.D.- 18.9N.D.- 19.3N.D.- 21.40.8RfD
Arsenic2.7-9.62.3-8.71.8-17.41.9-8.01.7-7.91.3-7.90.6RfD
Barium4.8-17444.8-11832.6-133N.D.-1045.3- 49.8N.D.- 53.9140RfD
BerylliumN.D.-0.75N.D.-0.38N.D.-0.46N.D.-1.1N.D.-0.11N.D.-0.440.16CREG
CadmiumN.D.N.D.-2.3N.D.N.D.-1.8N.D.-0.73N.D.0.4EMEG
Chromium3.8-27.67.9-19.8N.D.-22.33.3-14.7N.D.-17.92.2-24.210RfD
Lead3.3-32.94.9-29.93.4-46.52.4-10.52.6-5.82.3-11.1----
Manganese244-1100292-656101-787142-1150195-1030180-424200RfD
MercuryN.D.N.D.N.D.N.D.N.D.-0.108N.D.----
ThalliumN.D.-0.44N.D.-1.8N.D.-0.23N.D.N.D.N.D.-0.26----
Vanadium4.1-4.5417.1-31.811.3-41.15.5-24.96.0-12.9N.D.-34.8----

-- = Data not available.
N.D. = Not detected.

Table 13.

Organic chemicals in soil of on-site test pits (WW Engineering and Science, 1991).
ChemicalOn-site (ppb)Comparison Value
(ppb)		Source of Comparison Value
Volatile Compounds


ChloroethaneN.D.-14----
1,1-DichloroethaneN.D.-280----
1,1,1-TrichloroethaneN.D.-14----
TrichloroetheneN.D.-44----
Semi-Volatile Compounds


AcenaphthaleneN.D.-120----
Benzo(k)fluorantheneN.D.-170----
bis(2-Ethylhexyl) phthalateN.D.-140050CREG
ChryseneN.D.-89----
Diethyl phthalateN.D.-100----
2-MethylnaphthaleneN.D.-230----
4-MethylphenolN.D.-730----
NaphthaleneN.D.-220----
PhenanthreneN.D.-340----
PCBs
----
Arochlor-1242N.D.-300091CREG
Arochlor-1254N.D.-61091CREG

-- = Data not available.
N.D. = Not detected.

Table 14.

Inorganic chemicals in soil of on-site test pits, October 1990 (WW Engineering and Science, 1991).
ChemicalOn-site (ppm)Comparison Value
(ppm)		Source of Comparison Value
AntimonyN.D.-58.50.8RfD
Arsenic1.9-15.60.6RfD
Barium49-420140RfD
Beryllium0.51-1.000.16CREG
CadmiumN.D.-12.60.4EMEG
Chromium8.9-57.810RfD
Lead8.1-2190----
Manganese103-1480200RfD
MercuryN.D.-0.38----
Nickel7.5-26340RfD
Vanadium11.5-24.9----

-- = Data not available.
N.D. = Not detected.

Table 15.

Organic chemicals in on- and off-site surface water, May 1989 to September 1990 (WW Engineering and Science, 1991).
ChemicalUpstream Unnamed Tributary (ppb)Downstream Unnamed Tributary (ppb)On-site Drainage Ditch (ppb)On-site Depressions (ppb)Woodland Landfill Pond (ppb)Comparison Value (ppb)Source of Comparison Value
Semi-volatile Compounds






bis(2-ethyl-hexyl) phthalateN.D.N.D.N.D.N.D.-24N.D.4MCL
HexachloroethaneN.D.N.D.N.D.N.D.N.D.-102.5CREG
4-MethylphenolN.D.4N.D.N.D.-3N.D.----

-- = Data not available.
N.D. = Not detected.

Table 16.

Inorganic chemicals in on- and off-site surface water, May 1989 to September 1990 (WW Engineering and Science, 1991).
ChemicalUpstream Unnamed Tributary
(ppm)		Downstream Unnamed Tributary
(ppm)		On-site Drainage Ditch
(ppm)		On-site Depressions
(ppm)		Woodland Landfill Pond
(ppm)		Comparison Value
(ppm)		Source of Comparison Value
ArsenicN.D.N.D.N.D.-9.1N.D.-66.71.8-2.03RfD
Barium48.4-61.448-57.6900-18,10019.6-12067.2-73.8700RfD
BerylliumN.D.N.D.N.D.-5.0N.D.-0.7N.D.0.0081CREG
LeadN.D.N.D.N.D.-18.6N.D.-11.2N.D.15 AMCL
Manganese17.1-62.916.3-82.8606-343026.1-91088.8-1331000RfD
NickelN.D.N.D.64.5-297N.D.-24.1N.D.-17.1100LTHA
VanadiumN.D.N.D.N.D.-191N.D.-20.1N.D.-13.520LTHA

-- = Data not available.
N.D. = Not detected.
A = Action level for drinking water (USEPA)

Table 17.

Organic chemicals in on- and off-site sediments, May 1989 to September 1990 (WW Engineering and Science, 1991).
ChemicalUpstream Unnamed Tributary
(ppb)		Background Marsh
(ppb)		Downstream Unnamed Tributary
(ppb)		On-site Drainage Ditch
(ppb)		On-site Depressions
(ppb)		Woodland landfill Pond
(ppm)		Comparison Value
(ppb)		Source of Comparison Value
Volatile Compounds







2-ButanoneN.D.-59N.D.N.D.-19N.D.N.D.------
TrichloroetheneN.D.N.D.-5N.D.N.D.N.D.------
Semi-volatile Compounds







Benz(a)anthraceneN.D.-33,000N.D.-160N.D.-13,000N.D.N.D.-650N.D.160CREG
Benzo(b)fluorantheneN.D.-30,000N.D.-160N.D.-10,000N.D.N.D.-4800N.D.----
Benzo(k)fluorantheneN.D.-21,000N.D.N.D.-9700N.D.N.D.-620N.D.----
Benzo(g,h,i)peryleneN.D.-15,000N.D.N.D.-10,000N.D.N.D.-530N.D.----
bis(2-Ethylhexyl) phthalateN.D.N.D.N.D.-120N.D.N.D.-1900N.D.----
4-Chloro-3-methyl phenolN.D.N.D.-660N.D.N.D.N.D.N.D.----
ChryseneN.D.-29,000N.D.-230N.D.-11,000N.D.N.D.-690N.D.----
Dibenz(a,h)anthraceneN.D.-11,000N.D.N.D.-2900N.D.N.D.N.D.----
DibenzofuranN.D.-400N.D.N.D.N.D.N.D.-180N.D.----
Semi-volatile Compounds







Ideno(1,2,3-c,d)-pyreneN.D.-15,000N.D.N.D.-4200N.D.N.D.N.D.----
4-Methyl-phenolN.D.N.D.N.D.N.D.N.D.-360N.D.----
2-Methyl-naphthaleneN.D.-520N.D.N.D.N.D.N.D.-140N.D.----
NaphthaleneN.D.-1100N.D.N.D.N.D.N.D.-100N.D.----
PhenanthreneN.D.-14,000N.D.-170N.D.-4600N.D.N.D.-130044----
PCBs







Arochlor-1248N.D.N.D.N.D.N.D.N.D.-210N.D.91CREG
Arochlor-1254N.D.N.D.N.D.N .D.N.D.-180N.D.91CREG

-- = Data not available.
N.D. = Not detected.

Table 18.

Inorganic chemicals in on- and off-site sediments, May 1989 to September 1990 (WW Engineering and Science, 1991)
ChemicalUpstream Unnamed Tributary
(ppm)		Background Marsh
(ppm)		Downstream Unnamed Tributary
(ppm)		On-Site Drainage Ditch
(ppm)		On-site Depressions
(ppm)		Woodland Landfill Pond
(ppm)		Comparison Value
(ppm)		Source of Comparison Value
AntimonyN.D.N.D.N.D.N.D.N.D.-4.73.9-33.80.8RfD
Arsenic4.1-6.84.4-8.02.9-13.3N.D.-3813.2-10.33.4-12.90.6RfD
Barium48.3-124116-15023.7-10466.5-258025.2-12032.4-92.9140RfD
BerylliumN.D.-0.650.60-0.83N.D.-0.49N.D.-0.29N.D.-1.1N.D.-0.360.16RfD
CadmiumN.D.N.D.-6.6N.D.N.D.N.D.-5.2N.D.0.4EMEG
Chromium7.0-22.312.3-23.15.7-16.7N.D.-16.110.9-33.44.7-8.810RfD
Lead11.1-37.534.3-65.87.2-45.711.4-32.78.0-1006.3-60.7----
Manganese280-72297.1-764192-477250-1210325-603287-338200RfD
Nickel9.9-19.4N.D.-24.85.7-19.922.6-82.612.4-49.78.0-22.1----
SeleniumN.D.-0.52N.D.-1.5N.D.N.D.N.D.N.D.-2.240RfD
Vanadium16.9-28.121.2-35.310.6-24.39.1-69.914.7-41.716.4-29.6----

-- = Data not available.
N.D. = Not detected.

Table 19.

Inorganic chemicals in off-site private wells, September to October 1990 (pha.asp?docid=615&pg=3#WW Engineering and Science. 1991a.">WW Engineering and Science, 1991).
ChemicalBackground Sand and Gravel Wells
(ppb)		Non-Background Sand and Gravel Wells
(ppb)		Background Bedrock Wells
(ppb)		Non-Background Bedrock Wells
(ppb)		Unknown Aquifer Wells
(ppb)		Comparison Value
(ppb)		Source of Comparison Value
ArsenicN.D.N.D.N.D.N.D.-28.4N.D.-1.23RfD
Beryllium--N.D.-2--N.D.N.D.0.0081CREG
LeadN.D.N.D.-15.3N.D.N.D.-37.1N.D.-4.215 AMCL
Nitrate/ Nitrite400-11,900N.D.-3970N.D.-400N.D.N.D.10,000MCL
Thallium--N.D.-2.9--N.D.-1.6N.D.0.4LTHA

-- = Data not available.
N.D. = Not detected.
A = Action level for drinking water (USEPA)

A. Complete Pathways

Table 20.

Complete and potential exposure pathways at the Tri-County and Elgin Landfills.
Source of ContaminationEnvironmental Transport MediumPoint of ExposureRoute of ExposureExposed PopulationTime
Landfill wastesGroundwaterBuildings with on-site private wellsInhalation
Ingestion
Dermal contact		On-site workersPast
Present
Future
Landfill wastesGroundwaterOff-site private wellsIngestion
Inhalation
Dermal Contact		Off-site workers
Off-site residents		Past
Present
Future
Landfill wastesSoilOn-siteIngestion
Dermal contact		On-site workersPast Present Future
Non Site-related Contamination (source unknown)GroundwaterOff-site private wells
Users of Valley View municipal water supply		Ingestion
Inhalation
Dermal contact		Off-site workers
Off-site residents		Past
Present
Future

B. Potential Pathways
Source of ContaminationEnvironmental Transport MediumPoint of ExposureRoute of ExposureExposed PopulationTime
Landfill wastesAir following transport on-site in:
Leachate
Sediments
Soil gas
Surface soil
Surface water		 On-site (including Prairie Path) Inhalation
Dermal contact
Ingestion		On-site workers
Trespassers
Prairie Path users		Past
Present
Future
Landfill wastesAir following transport in:
On-site: Leachate,
Sediments,
Soil gas
On- or Off-site: Surface water
Surface soil		 Off-site:
Residences
Businesses
Prairie Path		Inhalation
Dermal contact
Ingestion		Off-site workers
Off-site residents
Prairie Path users		Past
Present
Future
Landfill wastesGroundwater Off-site:
Private wells
Municipal wells		Ingestion
Inhalation
Dermal contact		Off-site residents
Off-site Workers		Future
Landfill wastesSurface soilOff-siteIngestion
Dermal contact		Off-site residents
Off-site Workers		Past
Present
Future
Landfill wastesOn-site: Sediments
Surface water		On-site:
Depressions
Drainage ditch		Ingestion
Dermal contact		Trespassers
On-site workers		Past
Present
Future
Landfill wastesOff-site:
Sediments
Surface water		Unnamed tributary
Marsh		Ingestion
Dermal contact		Children
Off-site workers		Past
Present
Future

APPENDIX C. PUBLIC COMMENTS

PUBLIC COMMENTS

A copy of the Draft Public Health Assessment for the Tri-County and ElginLandfills was available for public review and comment at the Gail BordenPublic Library at 200 North Grove in Elgin, Illinois for the period startingSeptember 5, 1994, and ending October 4, 1994. No public comments were received.


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