HEALTH CONSULTATION
Indoor Air Quality Evaluation
PHILIP SERVICES CORPORATION
(a/k/a BURLINGTON ENVIRONMENTAL INCORPORATED GEORGETOWN FACILITY)
SEATTLE, KING COUNTY, WASHINGTON
APPENDIX B: HEALTH COMPARISON VALUES
Media-specific health comparison values are contaminant concentrations in specific media (i.e., soil, water and air) used to select contaminants of concern for further evaluation. If the concentration of a chemical exceeds a health comparison value, it does not mean that a public health threat exists but rather signifies that the chemical be further evaluated.
The health comparison values used in this public health assessment include environmental media evaluation guidelines (EMEGs) and cancer risk evaluation guidelines (CREGs). EPA Region IX and Region III risk based concentrations were also used when no other comparison values were available.
EMEGs are media-specific health comparison values derived from minimal risk levels (MRLs) presented in ATSDR Toxicological Profiles. MRLs are estimates of daily exposure of a human to a chemical that is likely to be without an appreciable noncancer risk over a specified duration of exposure. CREGs are estimated media specific contaminant concentrations that are anticipated to result in one excess cancer risk in one million persons exposed over a lifetime. CREGs are derived from EPA's cancer slope factors (CSFs), also known as cancer potency factors. CSFs are cancer potency estimates derived for chemicals shown to be carcinogenic in animals or humans.
EPA Region IX and Region III conservative risk based screening concentrations are derived for carcinogenic and noncarcinogenic compounds using CSFs and RfDs, respectively. RfDs are estimates of daily exposure of a human to a chemical that is likely to be without an appreciable noncancer risk over a specified duration of exposure.
APPENDIX C: EPA AUGUST 2000 INDOOR SAMPLING RESULTS
| Contaminant | Residence 2 1st Floor | Business 2 Warehouse |
|---|---|---|
| 1,1,1-trichloroethane | NA | NA |
| 1,1,2,2-tetrachloroethane | 0.14 | 0.07 |
| 1,1,2-trichloroethane | 0.49 | 0.05 |
| 1,1-dichloroethane | 59.96 | 45.12 |
| 1,1-dichloroethene | 0.71 | 0.87 |
| 1,2,4-trichlorobenzene | 0.22 | 0.15 |
| 1,2-dichloroethane | 0.81 | 0.69 |
| 1,2-dichlorobenzene | 0.12 | 0.06 |
| 1,2-dichloropropane | 6.47 | 1.34 |
| 1,3-butadiene | 0.42 | 0.11 |
| 1,3-dichlorobenzene | 0.12 | 0.06 |
| 1,4-dichlorobenzene | 16.71 | 35.70 |
| 2-butanone | NA | NA |
| acetone | NA | NA |
| benzene | 29.95 | 6.39 |
| bromomethane | 3.79 | 3.48 |
| cis-1,2-dichloroethene | 10.82 | 16.49 |
| cis-1,3-dichloropropene | 0.54 | 0.27 |
| carbon tetrachloride | 0.69 | 1.70 |
| chlorobenzene | 37.09 | 8.97 |
| chloroform | 3.32 | 0.98 |
| chloromethane | NA | NA |
| ethylbenzene | 2.55 | 7.79 |
| freon-11 | 15.16 | 11.16 |
| freon-113 | 7.58 | 56.28 |
| freon-12 | 13.30 | 3.84 |
| m,p-xylene | 20.97 | 30.73 |
| methylene chloride | 2.99 | 0.28 |
| o-xylene | 3.30 | 9.80 |
| tetrachloroethene | 25.22 | 10.17 |
| styrene | NA | 2.84 |
| trans-1,2-dichloroethene | NA | NA |
| trichloroethene | 3.06 | 12.52 |
| toluene | 349.98 | 23.81 |
| vinyl chloride | 1.05 | NA |
| Contaminant | Maximum Conc (ug/m3) | Inhalation Unit Risk (per ug/m3) | Slope Factor (mg/day/kg)-1 | RfC (mg/m3) | RfD (mg/kg-day) | Cancer Risk Max | Hazard Quotient Max |
|---|---|---|---|---|---|---|---|
| 1,1,2,2-tetrachlorethane | 1.61 | 5.8e-05 | 9.3e-05 | ||||
| 1,1-dichloroethene | 1.2 | 2.0e-01 | 6.0e-03 | ||||
| 1,1,2-trichloroethane | 2.2 | 1.6e-05 | 4.0e-03 | 3.5e-05 | 3.0e-01 | ||
| 1,2-dichloroethane | 5.91 | 2.6e-05 | 1.5e-04 | ||||
| 1,2-dichloropropane | 1.02 | 4.0e-03 | 2.6e-01 | ||||
| benzene | 10.2 | 7.8e-06 | 8.0e-05 | ||||
| carbon tetrachloride | 1.0 | 1.5e-05 | 7.0e-04 | 1.5e-05 | 7.9e-01 | ||
| cis-1,3-dichloropropene | 0.77 | 4.0e-06 | 2.0e-02 | 3.1e-06 | 3.9e-02 | ||
| chloroform | 2.2 | 1.0e-02 | 6.3e-06 | ||||
| ethylbenzene | 5.2 | 3.9e-03 | 2.9e-01 | 5.8e-06 | 9.9e-03 | ||
| methylene chloride | 330 | 4.7e-07 | 6.0e-02 | 1.6e-04 | 3.0e+00 | ||
| tetrachloroethene | 6.44 | 2.0e-03 | 1.0e-02 | 3.7e-06 | 3.6e-01 | ||
| trichloroethene | 17.19 | 4.0e-01 | 4.0e-02 | 2.0e-03 | 4.3e-01 | ||
| vinyl chloride | 0.74 | 8.8e-06 | 1.0e-01 | 6.5e-06 | 7.4e-03 | ||
| Total Risk for Chemicals with Indoor Air Literature Values | Cancer Risk | 2.5e-03 | |||||
| Hazard Index | 5.2e+00 | ||||||
| Contaminant | Maximum Conc (ug/m3) | Inhalation Unit Risk (per ug/m3) | Slope Factor (mg/day-/kg)-1 | RfC (mg/m3) | RfD (mg/kg-day) | Cancer Risk Max | Hazard Quotient Max |
|---|---|---|---|---|---|---|---|
| 1,1,2,2-tetrachlorethane | 0.1 | 5.8e-05 | 5.8e-06 | ||||
| 1,1-dichloroethene | 2.0e-01 | ||||||
| 1,1,2-trichloroethane | 1.8 | 1.6e-05 | 4.0e-03 | 2.9e-05 | 2.5e-01 | ||
| 1,2-dichloroethane | 0.14 | 2.6e-05 | 3.6e-06 | ||||
| 1,2-dichloropropane | 0.01 | 4.0e-03 | 2.5e-03 | ||||
| benzene | 10 | 7.8e-06 | 7.8e-05 | ||||
| carbon tetrachloride | 2.5 | 1.5e-05 | 7.0e-04 | 3.8e-05 | 2.0e+00 | ||
| cis-1,3-dichloropropene | 4.0e-06 | 2.0e-02 | |||||
| chloroform | 0.5 | 1.0e-02 | 1.4e-06 | ||||
| ethylbenzene | 4.8 | 3.9e-03 | 2.9e-01 | 5.3e-06 | 9.2e-03 | ||
| methylene chloride | 6 | 4.7e-07 | 6.0e-02 | 2.8e-06 | 5.5e-02 | ||
| tetrachloroethene | 5 | 2.0e-03 | 1.0e-02 | 2.9e-06 | 2.8e-01 | ||
| trichloroethene | 0.7 | 4.0e-01 | 4.0e-02 | 8.0e-05 | 1.8e-02 | ||
| vinyl chloride | 8.8e-06 | 1.0e-01 | |||||
| Total Risk for Chemicals with Indoor Air Literature Values | Cancer Risk | 2.5e-04 | |||||
| Hazard Index | 2.6e+00 | ||||||
| IUR | Indoor Air | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| (per | Slope Factor | RfC | RfD | Max Conc. | Cancer | Avg Conc | Cancer | |||
| Chemical | ug/m3) | (mg/kg/day)-1 | (mg/m3) | (mg/kg-day) | (ug/m3) | Risk | HQ | (ug/m3) | Risk | HQ |
| 1,1,1-trichloroethane | 120 | 13.6 | ||||||||
| 1,1,2,2-tetrachloroethane | 5.8E-05 | 0.3 | 1.7E-05 | 0.2 | 1.2E-05 | |||||
| 1,1,2-trichloroethane | 1.6E-05 | 4.0E-03 | 2.2 | 3.5E-05 | 3.0E-01 | 0.4 | 6.4E-06 | 5.5E-02 | ||
| 1,1-dichloroethane | 1.6E-06 | 1.0E-01 | 23.1 | 3.7E-05 | 2.3E-01 | 2.5 | 4.0E-06 | 2.5E-02 | ||
| 1,1-dichloroethene | 2.0E-01 | 1.2 | 6.0E-03 | 0.2 | 1.0E-03 | |||||
| 1,2,4-trichlorobenzene | 1.0E-02 | 0.4 | 2.2E-02 | 0.2 | 1.1E-02 | |||||
| 1,2-dichloroethane | 2.6E-05 | 0.8 | 2.1E-05 | 0.2 | 5.2E-06 | |||||
| 1,2-dichlorobenzene | 9.0E-02 | 1.6 | 9.8E-03 | 0.3 | 1.8E-03 | |||||
| 1,2-dichloropropane | 4.0E-03 | 0.2 | 5.0E-02 | 0.1 | 2.5E-02 | |||||
| 1,3-butadiene | 2.0E-03 | NA | NA | |||||||
| 1,3-dichlorobenzene | 0.3 | 0.2 | ||||||||
| 1,4-dichlorobenzene | 1.10E-05 | 8.0E-01 | 144.2 | 1.6E-03 | 1.8E-01 | 15.9 | 1.7E-04 | 2.0E-02 | ||
| 2-butanone | 1.0E+00 | 13 | 1.3E-02 | 5.7 | 5.7E-03 | |||||
| acetone | 1.0E-01 | 498.6 | 2.8E+00 | 88.7 | 4.9E-01 | |||||
| benzene | 7.8E-06 | 9.6 | 7.5E-05 | 3.2 | 2.5E-05 | |||||
| bromomethane | 5.0E-03 | 0.2 | 4.0E-02 | 0.1 | 2.0E-02 | |||||
| cis-1,2-dichloroethene | 16.6 | 1.8 | ||||||||
| cis-1,3-dichloropropene | 4.0E-06 | 2.0E-02 | 0.2 | 8.0E-07 | 1.0E-02 | 0.1 | 4.0E-07 | 5.0E-03 | ||
| carbon tetrachloride | 1.5E-05 | 7.0E-04 | 0.8 | 1.2E-05 | 6.3E-01 | 0.6 | 9.0E-06 | 4.7E-01 | ||
| chlorobenzene | 2.0E-02 | 0.2 | 5.5E-03 | 0.1 | 2.8E-03 | |||||
| chloroform | 1.0E-02 | 1.7 | 4.9E-06 | 0.5 | 1.4E-06 | |||||
| chloromethane | 11.6 | 2.3 | ||||||||
| ethylbenzene | 3.9E-03 | 2.9E-01 | 6.1 | 6.8E-06 | 1.2E-02 | 2.2 | 2.5E-06 | 4.2E-03 | ||
| freon-11 | 3.0E-01 | 46.1 | 8.5E-02 | 11.5 | 2.1E-02 | |||||
| freon-113 | 71.2 | 7.9 | ||||||||
| freon-12 | 2.0E-01 | 33.6 | 9.3E-02 | 9.8 | 2.7E-02 | |||||
| m,p-xylene | 2.0E+00 | 17.4 | 4.8E-03 | 6.9 | 1.9E-03 | |||||
| methylene chloride | 4.7E-07 | 6.0E-02 | 38.2 | 1.8E-05 | 3.5E-01 | 10.5 | 4.9E-06 | 9.7E-02 | ||
| o-xylene | 2.0E+00 | 5.6 | 1.5E-03 | 2.6 | 7.2E-04 | |||||
| tetrachloroethene | 2.0E-03 | 1.0E-02 | 2 | 1.1E-06 | 1.1E-01 | 0.7 | 4.0E-07 | 3.9E-02 | ||
| styrene | 1.0E+00 | 4.7 | 4.7E-03 | 1.4 | 1.4E-03 | |||||
| trans-1,2 dichloroethene | 2.0E-02 | 0.5 | 1.4E-02 | 0.1 | 2.8E-03 | |||||
| trichloroethene | 4.0E-01 | 4.0E-02 | 11.3 | 1.3E-03 | 2.8E-01 | 3.3 | 3.8E-04 | 8.3E-02 | ||
| toluene | 4.0E-01 | 33.9 | 8.5E-02 | 13.8 | 3.5E-02 | |||||
| vinyl chloride | 8.8E-06 | 1.0E-01 | 0.1 | 8.8E-07 | 1.0E-03 | 0.1 | 8.8E-07 | 1.0E-03 | ||
| Total Risk-Max Conc | Total Risk-Avg Conc | |||||||||
| Cancer | 3.1E-03 | Cancer | 6.2E-04 | |||||||
| HQ | 5.3E+00 | HQ | 1.5E+00 | |||||||
This Health Consultation was prepared by the Washington State Department of Health under a cooperative agreement with the Agency for Toxic Substances and Disease Registry (ATSDR). It is in accordance with approved methodology and procedures existing at the time the health consultation was begun.
Debra Gable
Technical Project Officer,
SPS, SSAB, DHAC, ATSDR
The Division of Health Assessment and Consultation, ATSDR, has reviewed this public health consultation and concurs with the findings.
Roberta Erlwein
Section Chief,
SPS, SSAB, DHAC, ATSDR
