HEALTH CONSULTATION

FORMER RALLY'S RESTAURANT AND BRIARCLIFF STATION
ATLANTA, DEKALB COUNTY, GEORGIA

TABLE 1: SOIL VOLATILE ORGANIC SURVEY ANALYTICAL SUMMARY*
BRIARCLIFF STATION SITE

ppb: parts per billion
HA: Sample taken with hand auger
J: Estimated concentration due to multiple dilution
SB: Sample taken from hollow stream auger boring
* Source: Professional Service Industries, Inc., Contamination Assessment, 11/94.
** Detection limit increased due to multiple dilution

TABLE 2: SOIL ANALYTICAL SUMMARY*
BRIARCLIFF STATION SITE

ug/L: micrograms per liter
* Source: Professional Service Industries, Inc., Contamination Assessment, 11/94.

TABLE 3. GROUNDWATER ANALYTICAL SUMMARY*

ppm: parts per million
MW: Monitoring Well
BTEX: volatile petroleum constituents: Benzene, Toluene, Ethylbenzene, and Xylene
nd: not detected
* Source: Professional Service Industries, Inc., Contamination assessment, 11/94.
** Duplicate sample collected

TABLE 4. MAXIMUM SOIL CONCENTRATIONS AND SOIL COMPARISON VALUES

ppm: parts per million
mg/kg: milligrams per kilogram
EMEG: Environmental Media Evaluation Guide
RMEG: Reference Dose Media Evaluation Guide
CREG: Cancer Risk Evaluation Guide (1x10^-6 excess cancer risk)
MRL: Minimal Risk Level
NA: Not Analyzed
* Source: ATSDR, Soil Comparison Values
** Source: ATSDR, Health Guidelines Comparison Values

APPENDIX A

Comparison Values

Comparison values are contaminant concentrations that are found in specific media and that are used to select contaminants for further evaluation. The values are derived from dose estimates at which health effects are not expected to be observed. Comparison values are listed and described below.

Cancer Risk Evaluation Guides (CREGs) are estimated contaminant concentrations that would be expected to cause no more than one excess cancer in one million (1 x 10') persons exposed over a lifetime. CREGs are calculated from EPAs cancer slope factors, which indicate the relative potency of a carcinogenic chemical.

Environmental Media Evaluation Guides (EMEGs) are based on ATSDR minimal risk levels and factor in body weight and ingestion rates. Reference Dose Media Evaluation Guides are the same as EMEGs only they are based on EPA reference doses (RfDs).

A Minimal Risk Level (MRL) is an estimate of daily human exposure to a chemical (in mg/kg/day) that is likely to be without an appreciable risk of deleterious effects (noncarcinogenic) over a specified duration of exposure. MRLs are based on human and animal studies and are reported for acute (14 days), intermediate (15-364 days), and chronic (365 days) exposures. MRLs are published in ATSDR Toxicological Profiles for specific chemicals.

Figure 1. Site Location

Figure 2. Map of Sites and Assessment Area

Figure 3. Site Map

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