Laserfiche WebLink
CHRONOLOGY <br /> See prior reports for priod from 03/31/92 to 02/23/93 <br /> 03/15/93 <br /> Collect influent and effluent samples of the system, and <br /> vapor samples f-.om VSB3 , VSB5, VSB9, and MW5 for analysis at <br /> WEGE laboratory Flow rate 89 73 cfm Add carbon canister <br /> 04/15/93 <br /> Note vapor brea'.trough on arival at site . Collect influent <br /> and effluent sa-,ples of the system, and vapor samples from <br /> VSB3 , VSB5 , V7B9, and MW5 for analysis at WEGE laboratory. <br /> Flow rate 85 85 cfm. Shut down system <br /> During the samp' ing, Mary Meays, San Joaquin County Health, <br /> visited the sw�ie to discuss with George Converse, Western <br /> Geo-Engineers, the need for and location of a conformation <br /> soil boring <br /> 04/16/93 <br /> Exchange carbon one canister Restart system Collect <br /> influent and effluent samples of the system, for analysis at <br /> WEGE laboratory Flow rate 85 85 cfm <br /> 04/23/93 <br /> Exchange carbon all canisters . Collect influent and <br /> effluent samplos of the system, for analysis at WEGE <br /> laboratory. Floa rate 85 85 cfm. <br /> 04/23/93 <br /> Add carbon canister Collect influent and effluent samples <br /> of the system, and vapor samples from VSB3 , VSB5, VSB9, <br /> VSB11, and MW5 for analysis at WEGE laboratory. Flow rate <br /> 85 . 94 cfm <br /> VAPOR SAMPLING <br /> On site sample analysis is performed using a Photovac 10550 PID <br /> chromatograph The chemical make up of the vapor produced at the <br /> site has changed with vapor extraction. The light hydrocarbons <br /> have been depleted and the heavier hydrocarbons are now the <br /> dominate hydrocarbons being produce Because of this it is no <br /> longer practical to perform on site analysis with the 1OS50 <br /> page 2 of R604, 05/20/93 <br /> J , <br />