PUBLIC HEALTH ASSESSMENT ADDENDUM
CHEM-DYNE CORPORATION
HAMILTON, BUTLER COUNTY, OHIO
Figure 1. Location of Chem-Dyne Site
Figure 3. Census Tracts in the Hamilton-Middletown, Ohio SMSA
Figure 4. Approximate Surface Soil Sample Locations
Test Pit and "Grab" Sample Locations
Figure 6. Chem-Dyne Site Well Locations
Figure 7. Concentrations of Priority Pollutant VOCs
Figure 8. Location of Active Production Wells In Vicinity of the Chem-Dyne Site
The following section was not available in electronic format for conversion to HTML at the time of preparation of this document. To obtain a hard copy of the document, please contact:
Agency for Toxic Substances and Disease Registry
Division of Health Assessment and Consultation
Attn: Chief, Program Evaluation, Records, and Information Services Branch
E-56
1600 Clifton Road NE, Atlanta, Georgia 30333
Calculations for Chemicals that do not cause cancer:
| Comparison Value = | U.S. EPA RfD x Body Weight ------------------------ Ingestion Rate |
| Exposure Dose = | Medium Concentration x intake rate x exposure factor ------------------------------------------------ Body Weight |
Medium Concentration = the concentration of the chemical in water or soil.
Intake Rate = The amount of water or soil a person would drink or eat.
Exposure Factor = The amount of time in years that a person would be exposed to the specific chemical. No exposure factor is used if the exposure occurs daily over a person's lifetime.
Body Weight = The amount a person weights. Generally 70 kilograms is used for an adult and 10-15 kilograms for a child.
Calculation of risk for those chemicals that may cause cancer:
| Comparison Value = | Risk       Body Weight ------------ x ----------- Slope Factor         Ingestion Rate |
Lifetime Excess Cancer Risk =
Annual exposure dose x slope factor x exposure factor in years
Dose is in mg/kg/day
Slope factor = The U.S.EPA cancer slope factor, mg/kg/day
Exposure factor = A ratio of the amount of time in years that a person would be exposed to the
specific chemical.
TABLE 1-D
ON-SITE GROUNDWATER CONTAMINATION (1983)
| CHEMICAL | CONCENTRATION (µg/L) |
COMPARISON VALUE (µg/L) |
| Benzene | ND-160 | 51 |
| Carbon tetrachloride | ND-3,000 | 32 |
| 1,2-dichloroethane | ND-3,900 | 51 |
| 1,1,1-trichloroethane | ND-3,100 | 2001 |
| 1,1,2-trichloroethane | ND-2,800 | 10003 |
| 1,1,1,2-tetrachloroethane | ND-130 | 22 |
| Chloroform | ND-22,000 | 1001 |
| 1,2-dichloroethene | ND-40,000 | 1001 |
| Ethylbenzene | ND-1,100 | 7001 |
| Methylene Chloride | 6-3,100 | 2,0004 |
| Tetrachloroethene | ND-3,900 | 51 |
| Toluene | ND-7,800 | 1,0001 |
| Trichloroethene | ND-58,000 | 51 |
| Vinyl chloride | ND-47 | 0.22 |
| Acetone | 48-29,000 | 3,5003 |
| 2-Butanone | ND-7,500 | 1,7003 |
| 4-methyl-2-pentanone | ND-3,100 | NA |
| Barium | ND-1,330 | 2,0001 |
| Mercury | ND-1.9 | 21 |
- ND=Chemical not detected
µg/L=micrograms per liter=parts per billion
1=U.S. EPA Maximum Contaminant Limit
2=Cancer Risk Guide calculated by ODH
3=Noncancer comparison value calculated by ODH
4=ATSDR EMEG
TABLE 2-D
HISTORICAL CONTAMINANT LEVELS
IN ON-SITE MONITORING WELL MW-10
| CHEMICAL | 1982 (µg/L) | 1983 (µg/L) | 1992 (µg/L) | MCL (µg/L) |
| Benzene | 700 | 550K | 1.9 | 5 |
| Carbon tetrachloride | 760 | ND | 1.8 | 3 |
| 1,2-dichloroethane | 16,000 | 3,900 | 4.7 | 5 |
| 1,1,1-trichloroethane | 2,700 | 3,100 | 4.2 | 200 |
| Chloroform | 3,300 | 8,800 | 18 | 100 |
| 1,2-trans dichloroethene | 31,000 | 40,000 | 3.3 | 100 |
| Tetrachloroethene | 980 | 3,900 | 69 | 5 |
| Toluene | 6,100 | 7,800 | 1.0 | 1,000 |
| Trichloroethene | 8,400 | 58,000 | 62 | 5 |
| Vinyl chloride | ND | 2,000K | 14 | 0.21 |
- ND = Chemical not detected
µg/L = micrograms per liter=parts per billion
1= Cancer Risk Guide Calculated by ODH
TABLE 3-D
WASTE MATERIALS
ON-SITE BUILDING
| CHEMICAL | CONCENTRATION (mg/kg) |
| Hexachlorobenzene | 9.3 |
| Bis(2-ethylhexyl) phthalate | 150 |
| 1,3-dichlorobenzene | 90 |
| Tetrachloroethene | 60 |
| Endrin | 0.25 |
| Dieldrin | 0.06 |
| Lead | 924 |
| Chromium | 205 |
| Zinc | 8,561 |
- mg/kg=milligrams per kilogram=parts per million
TABLE 4-D
GROUNDWATER CONTAMINATION IN OFF-SITE MONITORING WELLS (1983)
| CHEMICAL | CONCENTRATION (µg/L) |
COMPARISON VALUE (µg/L) |
| Benzene | ND-240 | 51 |
| Chlorobenzene | ND-2,000 | 7002 |
| 1,2-dichloroethane | ND-13,000 | 51 |
| 1,1,1-trichloroethane | ND-300 | 2001 |
| 1,1-dichloroethane | ND-2,200 | 3,5002 |
| 1,1,2-trichloroethane | ND-29,000 | 51 |
| 1,1,2,2-tetrachloroethane | ND-9,400 | 23 |
| Chloroethane | ND-1,400 | NA |
| Chloroform | ND-3,300 | 1001 |
| 1,1-dichloroethene | ND-3,900 | 71 |
| 1,2-dichloroethene | ND-16,000 | 1001 |
| Trichloroethene | ND-9,100 | 51 |
| Vinyl chloride | ND-11,000 | 0.23 |
| Acetone | ND-77,000 | 3,5002 |
| Barium | 101-1,940 | 2,0001 |
| Mercury | ND-60 | 21 |
- ND=Chemical not detected
NA=Comparison value not available
µg/L=micrograms per liter=Parts per billion
1=U.S. EPA Maximum Contaminant Level
2=Noncancer comparison value calculated by ODH
3=Cancer Risk Guide calculated by ODH
TABLE 5-D
HISTORICAL CONTAMINANT LEVELS
IN OFF-SITE MONITORING WELL MW-15
| CHEMICAL | 1982 (µg/L) | 1983 (µg/L) | 1992 (µg/L) | MCL µg/L |
| Benzene | ND | ND | 92 | 5 |
| Carbon Tetrachloride | ND | ND | 1 | 3 |
| 1,2-dichloroethane | 21,000 | 13,000 | 314 | 5 |
| 1,1,1-trichloroethane | ND | ND | 79 | 200 |
| Chloroform | 5,800 | 3,300 | 162 | 100 |
| 1,2-trans dichloroethene | 15,000 | 12,000 | 79 | 100 |
| Tetrachloroethene | 750 | 1,500K | 215 | 5 |
| Toluene | 1,400 | 1,900K | 36 | 1,000 |
| Trichloroethene | 8,100 | 9,100 | 128 | 5 |
| Vinyl chloride | 5,100 | 6,500 | 260 | 0.21 |
- ND = Chemical not detected
µg/L = micrograms per liter=parts per billion
1=ODH Cancer Risk Guide
TABLE 6-D
CONTAMINANT LEVELS IN OFF-SITE PRODUCTION WELLS (1983)
| CHEMICAL | BECKETT PAPER |
CHAMPION PAPER |
HAMILTON ELECTRIC |
VAUGHN BUILDING |
COMPARISON VALUE (µg/L) |
| 1,1,1- trichloroethane |
ND |
2.0 |
ND |
11.0 |
2001 |
| 1,2-dichloroethane | ND | 3.0 | ND | ND | 1001 |
| Methylene Chloride | 4.0 | 5.0 | ND | 3.0 | 2,0002 |
| Trichloroethene | ND | 4.0 | ND | ND | 51 |
| Vinyl Chloride | ND | ND | ND | 14.0 | 0.23 |
ND = Chemical not detected
µg/L = micrograms per liter=Parts per billion
1 = U.S. EPA Maximum Contaminant Level
2 = ATSDR EMEG
3 = Cancer Risk value calculated by ODH
