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r rr <br /> Addendum to Quarterly Groundwater Monitoring Report <br /> and Remediation Status Report dated August 21,1995 <br /> Moore Petroleum, 1399 E Yosemrte Ave,Manteca,CA <br /> September 15,1995 <br /> Page 3 <br /> The carbon adsorption system was morally configured to extract vapors from MW-1B Vapor <br /> samples were collected from the system influent and effluent on July 5, 1995 to demonstrate <br /> compliance with SJVUAPCD Permit The vapor samples were submitted, under chain-of- <br /> custody, to Sparger Technology, Inc , of Sacramento, Cahforma, a state-certified analytical <br /> laboratory The samples were analyzed for total petroleum hydrocarbons, as gasoline(TPHg), <br /> and benzene, toluene, ethylbenzene and xylenes(BTEX) Both the influent and effluent vapor <br /> samples reported below detection limits for TPHg and BTEX <br /> On July 18, 1995 the horizontal piping was configured into the vapor extraction system such that <br /> vapors were bemg extracted from both the horizontal piping and MW-1B On July 25, 1995 <br /> vapor samples were collected for analysis from MW-1B and also from the horizontal piping <br /> Both samples indicated below laboratory detection limits for TPHg and BTEX Upon receiving <br /> the analytical results from the sampling event which occurred on Jul , 1995, the carbon <br /> adsorption system was turned off on�1 1995 At this time, the vapor extraction system was <br /> pulsed on periodically and monitored with a flame ionization detector(FID)in an attempt to <br /> remove any remammg hydrocarbons in the sods <br /> . Analytical results and chain-of-custody forms from both of these sampling events are included as <br /> Attachment 3 To date, the combination of both vapor extraction systems have extracted a total <br /> of 11 pounds of TPHg and 0 098 pounds of benzene since December 6, 1994 A summary of <br /> mass extraction rates based on laboratory analytical results are included m Table 3 <br /> TAffiEI SChEM 4W(WMAM E13RACIIa RAM BAM Cf4 iABaRATC tYANA=CALRE= <br /> DAM F7Dw .aNALYUCALRESMTS EKMAMONRAM CUMUL4MVE <br /> RAM U > Tft B== Uft Bye NOUS <br /> (tel (U) (UA (b!day) (b/w? (b) (b) <br /> 12W0 A (SCF" (qA 10. 22 427 0.0043 0.21 0.0032 SempboAxtedfiwjM;6L1B <br /> 022495 16 160 ND 423 0 11 4095 SmTboo&dedfianM%LIB <br /> 07/05195 51 Nn ND 0 0 11 4098 SmWlea&cIedfiaml AAIB <br /> 4725195 92 ND ND 0 0 11 4098 Smpboofixieditamhomodalppm <br /> MOM 92 ND ND a 0 11 4098 Sa *o*aadfmmNWIB <br />