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PUBLIC HEALTH ASSESSMENT

ACE SERVICES INCORPORATED
COLBY, THOMAS COUNTY, KANSAS



APPENDIX A – SITE MAPS

LIST OF FIGURES


Figure 1. Location Map



Figure 2. Site Vicinity Map

APPENDIX B – CONTAMINANT AND PATHWAY TABLES

LIST OF TABLES

Table 1. On-Site Contamination – Pre-Removal Characteristics of Media
Table 2. Off-Site Contamination
Table 3. Summary – Completed Exposure Pathways and Associated Health-Related Information
Table 4. Summary – Potential Exposure Pathways



List of Acronyms, Symbols, and Abbreviations

ppm
ppb
<
RMEG
AL
MCL
parts per million
parts per billion
less than
Reference Dose Media Evaluation Guide
Action Level
Maximum Contaminant Level

Table 1.

On-Site Contamination – Pre-Removal Characteristics of Media
Material/MediaContaminantMaximum ConcentrationSample Year & ReferenceComparison Value
ValueSource
Wastewater Treatment Building – Miscellaneous Solids/SludgeChromium VI23,900 ppm1993 (13)4,000e ppmRMEG
Total Chromium 154,000 ppm1990 (2)4,000e ppm
700,000f ppm
Lead38,500 ppm1990 (2)none
Wastewater Treatment Building – LiquidsTotal Chromium 411,000 ppb1993 (13)200g ppb
40,000h ppb
RMEG
Plating Building – Concrete in FloorsChromium VITrough floor –
21,100 ppm
1993 (13)
1994 (7)
4,000e ppm
700,000f ppm
RMEG
Total Chromium Trough floor –
21,000 ppm

Building floor –
16\,000 ppm

LeadTrough floor –
6,020 ppm

Building floor –
770 ppm

Plating Building – Dust on FloorTotal Chromium 62,100 ppm1993 (13)4,000e ppm
700,000f ppm
RMEG
Lead24,300 ppmnone
WastewaterTotal Chromium 21,000 ppb1971 (14)50c ppb
10,000d ppb
RMEG
Surface Soil/Sludge, in formerlagoonTotal Chromium 5,945 ppm1989 (2)10 & 300a ppm
2,000 & 50,000bppm
RMEG
19,100 ppm1993 (13)
Lead6,847 ppm1989 (2)none
29,100 ppm 1993, (13)
Surface Soils near lagoon andbuildingsTotal Chromium 79,200 *ppm
1,990 **ppm.
1993 (13)
1993 (15)
10 & 300a ppm
2,000 & 50,000bppm
RMEG
Lead81,800 *ppm
272 **ppm
1993 (13)
1993 (15)
none
Subsurface SoilNear , or down gradient, of lagoonTotal Chromium 3,056 ppm1980, 1990 (2)10 & 300a ppm
2,000 & 50,000bppm
RMEG
Lead2,035 ppmnone
Not near or down gradient of lagoonTotal Chromium 77 ppm10 & 300a ppm
2,000 & 50,000bppm
RMEG
LeadNDnone
Groundwater,
Recovery Well
Chromium VI985 ppb1980-1988 (3)50cRMEG
Lead<5 ppb1991 (2)15 ppbAL
Comparison value notes:
a For Chromium VI; 10 ppm for pica child; 300 ppm for child
b For Chromium III; 2,000 ppm for pica child; 50,000 ppm for child
c For Chromium VI; 50 ppb for child
d For Chromium III; 10,000 ppb for child
* sample taken between chemical storage building and wastewater treatment building
e For Chromium VI; 4,000 ppm for workers
f For Chromium III; 700,000 ppm for workers
g For Chromium VI; 200 ppb for workers
h For Chromium III; 40,000 ppb for workers
**samples taken elsewhere

Table 2.

Off-Site Contamination
Material/MediaContaminant Maximum ConcentrationSample Year & ReferenceComparison Value
ValueSource
Soil/Sediment, in TributaryUpstreamTotal Chromium 5.1 ppm1989 (2)10 & 300a ppm
2,000 & 50,000bppm
RMEG
Lead61 ppmnone
DownstreamTotal Chromium 14.4 ppm10 & 300a ppm
2,000 & 50,000bppm
RMEG
Lead51 ppmnone
Groundwater, Monitoring Well to East (DownGradient) of ACETotal Chromium 1,910 ppb1990-91 (2)50c ppb
10,000d ppb
RMEG
345 ppb1995 (17)
Lead3 ppb1990-91 (2)15 ppbAL
Groundwater, Monitoring Wells at County LandfillTotal Chromium20 ppb1995 (18)50c ppb
10,000d ppb
RMEG
Lead5 ppb15 ppbAL
Groundwater, PWS #8, Former Public WellChromium VIZero1973 (3)50c ppbRMEG
Total Chromium 1,800 ppb
1,100 ppb
980 ppb
64 ppb
1980 (3)
1981
1982
1995 (17)
50c ppb
10,000d ppb
RMEG
Groundwater
Other Public Wells
Chromium VI13 ppb1985-1988 (3)50c ppbRMEG
Total Chromium 40 ppb
10 ppb
1984 (3)
1994 (19)
50c ppb
10,000d ppb
RMEG
Lead6 ppb
<1 ppb
1990 (2)
1995 (19)
15 ppbAL
Nitrate (as N)4,400 ppb1990 (2)10,000 ppbMCL
4,980 ppb1995 (19)
Private WellsChromium VIFor Worst of 2-Wells:Over several months,maximum was 14 ppb.Then, abruptly increasedto 4,100 ppb anddecreased to 610 ppb intwo months; & fivemonths later was notdetected.
For Second Well: Levelincreased over 16 monthsto 12 ppb, then was notdetected.
1987 (3)503 ppbRMEG
Total Chromium Three Wells: Sampledonce; maximum value forone well was 17 ppb. For others, nondetect 1990 (2)50c ppb
10,000d ppb
RMEG
Eight wells: Maximumvalue for three wells was24 ppb. For others,nondetect 1995, 1996 (17)
Lead6 ppb
Eight wells: nondetect
1990 (2)
1995, 1996 (17)
15 ppbAL
Nitrate (as N)Two wells: 28,190 ppb e
167 wells: 21,000 ppb
1989 (3)
1991-1996 (20)
10,000 ppbMCL
Comparison value notes:
a For Chromium VI; 10 ppm for pica child; 300 ppm for child
b For Chromium III; 2,000 ppm for pica child; 50,000 ppm for child
c For Chromium VI; 50 ppb for child
d For Chromium III; 10,000 ppb for child
e Two well owners now connected to public water.

Table 3.

Summary – Completed Pathways
PATHWAY NAME:Former
Process Workers
Public Water UsersPrivate Well UsersPrivate
Well Users
Source:Process materials, wastesProcess materials, wastesACE process materials, wastes, plus possibly undefined sourcesNot site related
Medium:Process materials, wastes, building components, soils, public water supplyGroundwaterGroundwaterGroundwater
Exposure Point:On-site process buildings and surrounding areasOff-site Residences/businessesOff-site Residences, businessesSome well locations in county
Exposure Route:Incidental ingestion
Inhalation
Skin contact
IngestionIngestionIngestion
Receptor Population:Process area workersPublic Water UsersResidents, transients Residents
Exposure Period:PastPrincipally in Past, also Current and Future Past, present, future Past, present, future
Estimated Number Exposed*:1006,0001001,000
Principal ContaminantsChromium, some leadChromiumChromiumNitrates
Not site related
* Estimated number of exposed persons is believed to be within an order ofmagnitude

Table 4.

Summary – Potential Pathways
PATHWAY NAME:Process Building ReuseAce Employees at Home
Source:Residual process materials, wastesProcess materials, wastes, soils
Medium:Dust, building componentsWorker clothing
Exposure Point:On-site, In buildingOff-site, Residences
Exposure Route:Ingestion
Inhalation
Ingestion
Inhalation
Receptor Population:UsersEmployee, family
Exposure Period:FuturePast
Estimated Number Exposed:50400
Principal Plausible ContaminantsChromium, leadChromium, lead
* Estimated number of exposed persons is believed to bewithin an order of magnitude


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