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i <br /> 6ETTLER - RYAN INC. <br /> • <br /> July 20, 2000 c� <br /> Mr Ed Ralston <br /> Tosco Marketing Company - <br /> Environmental Compliance Department <br /> 1380 Lead Hill Road, Suite 120 <br /> Roseville, CA 95661 <br /> w <br /> Subject Second Quarter 2000 VES Report, Former Tosco 76 Branded Station No 6981, 4707 Pacl is Avemrc, <br /> Stockton, Calirornia <br /> Mr Ralston <br /> This report summarizes the sampling and operational data for the vapor extraction system(VES)at the subject site from April <br /> through June, 2000 The VES operates under San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) <br /> Permit N-3335-2-0 Location of the subject site is shown on Figure 1 The current station configuration is shown on <br /> Figure 2 GR sampling procedures are attached <br /> Continuous VES operation was stopped on November 3, 1998, due to low influent concentrations but has operated in "pulse <br /> mode since The VES was last pulsed from March 14 to March 21, 2000 Historical VES analytical data are summarized <br /> in Table 1, and operational data are summarized in Table 2 <br /> Due to statLon demolition activities during the second quarter 2000 the VES was not operated GR was at the site on April <br /> 19, 2000, to initiate the regularly scheduled monthly pulse operation Electrical power to the VES, routed through the main <br /> breaker panel of the former station building, had been disconnected to allow for station demolition activities Due to <br /> demolition of the station facilities, Pacific Gas and Electric required installation of new electrical service to the VES <br /> Installation of the new electrical service was not completed until July 12, 2000 <br /> GR will perform regularly scheduled monthly pulsing of the VES in the third quarter 2000 beginning the week of July 17, <br /> 2000 If you have questions, please call us in Sacramento at (916) 631-1300 <br /> Sincerely, <br /> Gettler-Ryall Inc <br /> 't-- <br /> Stephen J Carte , R G <br /> Senior Geologist <br /> Attachments Table 1 - Summary of VES Chemical Analytical Data <br /> Table 2 - Summary of VES Operation <br /> Figure 1 Vicinity Map <br /> Figure 2 Site Plan <br /> cc Ms Margaret Lagorio, SJCEHD, 304 E Weber Avenue, Third Floor, Stockton, CA 95202 <br /> Mr Marty Hartzell, RWQCB, 3443 Routier Road, Suite A, Sacramento, CA 95827-3003 <br /> Ms Diane Busalacci, SJVUAPCD, 4230 Kiernan Avenue, Modesto, CA 95356 <br /> Mr David Luick, MS CC20E, Target Stores, 33 South Sixth Street, Minneapolis, MN 55440-1392 <br /> 6747 Sierra Court , Suite J Dublin , California 94568 • (925) 551 - 7555 <br /> 140124 04 <br />