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CL Properties, VI E37801.02B
<br /> December 30, 1999 Page 5
<br /> Summary of Soil Vapor Sample Analytical Results,
<br /> Sampling Date: December 13t , 1999
<br /> (All sam les collected at 5 feet below site rade)
<br /> Sam le Location1 TPH-G I Chlorinated Solvents
<br /> ' Soil Vapor Sample Analytical Results Results in /L
<br /> SVl ND ND
<br /> SV2 ND ND
<br /> SV3 ND ND
<br /> SV4 ND ND
<br /> SV5 ND ND
<br /> SV6 ND ND
<br /> ' SV7 ND IND
<br /> TPH-G= total petroleum hydrocarbons-gasoline range constituents;
<br /> ' Chlorinated Solvents= Chloromethane, Vinyl Chloride, Bromomethane,Chloroethane, 1.1-Dichloroethene,
<br /> Methylene chloride, trans- 1, 2-Dichloroethane, 1,1-Dichloroethane, cis- 1, 2-
<br /> Dichloroethane,Chloroform,1,1,1 Trichloroethane,1,2-Dichloroethane,Benzene,Carbon
<br /> Tetrachloride,Trichloroethene(TCE), 1,2-Dichloropropane,Bromodichloromethane,cis-
<br /> 1,3- Dichloropropene, Toluene, trans- 1,3- Dichloropropene, 1,1,2 - Trichloroethane,
<br /> Dibromochloroethane, Tetrachloroethene (PCE), Chlorobenzene, Ethylbenzene, m&p-
<br /> Xylene,o-Xylene,Styrene,Bromoforml,1,2,2-Tetrachloroethane,l,3-DCB,1,4-DCB,and
<br /> 1,2-DCB;
<br /> µg/L= micrograms per liter;
<br /> ND= not detected above laboratory detection limit.
<br /> Note: Detection limits for reporting purposes are documented in the attached laboratory reports.
<br /> 6.0 EVALUATION
<br /> The following evaluations are based on the observations made in the field and the analytical results
<br /> 1 from selected soil and groundwater samples.
<br /> 6.1 Soil Vapor Assessment:Twining analyzed all seven soil vapor samples for the constituents
<br /> of concern (COCs) including TCE, PCE and TPH-G. No reportable concentrations of the COCs
<br /> were detected in any soil vapor sampling points.
<br /> ' 7.0 CONCLUSIONS AND RECOMMENDATIONS
<br /> Based on the work scope and findings described in this report the following conclusion is offered:
<br /> • No evidence of a release of dry cleaner solvents(including TCE, and PCE)were detected in
<br /> any of the soil vapor samples.
<br /> Based on the findings, Twining does not recommend additional assessment regarding the adjacent
<br /> and former dry cleaning facilities.
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