HEALTH CONSULTATION
RAY HOLTMAN FARM
QUINCY, ADAMS COUNTY, ILLINOIS
Table 1. Completed Exposure Pathways
Ray Holtman Farm, Adams County, Quincy, Illinois
| Pathway Name: | Source | Medium | Exposure Point | Exposure Route | Receptor Population | Time of Exposure | Exposure Activities | Estimated Number Exposed | Chemicals |
| Surface Soil | Site & Background | Soil | On the site | Ingestion Inhalation Dermal |
Farmers Trespassers |
Past Present Future |
Contacting Soil | 5 | manganese |
| Groundwater | Site & Background | Groundwater | Area Wells (tap) | Ingestion Inhalation Dermal |
Residents Down-gradient |
Past Present Future |
Using well water | 10 | manganese |
Table 2. Potential Exposure Pathways
Ray Holtman Farm, Adams County, Quincy, Illinois
Pathway Name: |
Source | Medium | Exposure Point | Exposure Route | Receptor Population | Time of Exposure | Exposure Activities | Estimated Number Exposed | Chemicals |
Ground-water |
Site & Background | Groundwater | Area Wells (tap) | Ingestion Inhalation Dermal |
Residents Down-gradient |
Future? | Using well water | 50 | arsenic vanadium |
Surface Water & Sediments |
Site & Background | Surface Water & Sediments | Ghost Hollow Creek | Ingestion Inhalation Dermal |
Trespassers | Past? Present? Future? |
Wading in the water | 5 | manganese arsenic |
Table 3. Samples Exceeding Health Comparison Values for Manganese in Water.
Ray
Holtman Farm, Adams County, Quincy, Illinois
| SAMPLE LOCATION |
RESULTS (in ppb) |
HEALTH COMPARISON VALUES EXCEEDED | |
| Groundwater |
Child RMEG (50ppb) |
Adult RMEG (200ppb) | |
| GW-7 |
1,120 |
X | X |
| GW-8 | 104 | X | no |
| GW-8 duplicate | 375 | X | X |
| Surface Water | |||
| SW-1 background | 5,890 | X | X |
| SW-3 | 302 | X | X |
| SW-3 duplicate | 291 | X | X |
| SW-4 | 68.2 | X | no |
| SW-5 | 2,020 | X | X |
| Residential Wells | |||
| RW-4 | 74 | X |
no |
| RW-4 duplicate | 75 | X |
no |
RMEG- Reference Dose Media Evaluation Guide
ppb - parts per billion
Table 4. Samples Exceeding Health Comparison Values for Manganese in Soil and
Sediment. Ray Holtman Farm, Adams County, Quincy, Illinois
| SAMPLE LOCATION | RESULTS (in ppb) |
HEALTH COMPARISON VALUES EXCEEDED | |
| Surface Soil | Child RMEG (300ppm) | Adult RMEG (4,000ppm) | |
| SS-1 | 653 | X |
no |
| SS-2 | 881 | X |
no |
| SS-3 background | 542 | X |
no |
| Sediment 1992 | |||
| ST-2 | 696 | X |
no |
| ST-3 background | 407 | X |
no |
| Sediment 1995 | |||
| SS-1 background | 2,710 | X |
no |
| SS-3 | 641 | X |
no |
| SS-3 duplicate | 576 | X |
no |
| SS-5 | 936 | X |
no |
RMEG- Reference Dose Media Evaluation Guide
ppb - parts per billion
Table 5. Samples Exceeding Health Comparison Values for Arsenic.
Ray Holtman Farm, Adams County, Quincy, Illinois
| SAMPLE LOCATION |
RESULTS | HEALTH COMPARISON VALUES EXCEEDED | |
| Groundwater | (in ppb) | Child EMEG 3ppb | Adult EMEG 10ppb |
| GW-7 | 31.4 | X | X |
| Sediment 1995 | (in ppm) | Child EMEG 20ppm | Adult EMEG 200ppm |
| SS-1 | 21.2 | X | no |
EMEG- Environmental Media Evaluation Guide (ATSDR)
ppb - parts per billion
ppm - parts per million
Table 6. Samples Exceeding Health Comparison Values for Vanadium.
Ray Holtman Farm, Adams County, Quincy, Illinois
| SAMPLE LOCATION |
RESULTS (in ppb) |
HEALTH COMPARISON VALUES EXCEEDED | |
| Groundwater | Child EMEG 30ppb | Adult EMEG 100ppb | |
| GW-7 | 43 | X |
no |
| Surface Water | |||
| SW-5 | 33.2 | X |
no |
EMEG- Environmental Media Evaluation Guide (ATSDR)
ppb - parts per billion
Comparison Values Used In Screening Contaminants For Further Evaluation
Environmental Media Evaluation Guides (EMEGs) are developed for chemicals based on their toxicity, frequency of occurrence at National Priority List (NPL) sites, and potential for human exposure. They are derived to protect the most sensitive populations and are not cut-off levels, but rather comparison values. They do not consider carcinogenic effects, chemical interactions, multiple route exposure, or other media-specific routes of exposure, and are very conservative concentration values designed to protect sensitive members of the population.
Reference Dose Media Evaluation Guides (RMEGs) are another type of comparison value derived to protect the most sensitive populations. They do not consider carcinogenic effects, chemical interactions, multiple route exposure, or other media-specific routes of exposure, and are very conservative concentration values designed to protect sensitive members of the population.
Cancer Risk Evaluation Guides (CREGs) are estimated contaminant concentrations based on a one excess cancer in a million persons exposed to a chemical over a lifetime. These are also very conservative values designed to protect sensitive members of the population.
