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•! R 4e �1 t' year ',;T FUGRO WEST, INC. ill Oil —.---------1050 Melody Lane,Suite 160 -- January 18, 1996 Roseville California 95678 Project No 9347-1044 Tel (916)782-2110 FAX (916)786-7830 Mil Bruce Tuter San Joaquin Valley Unified Air Pollution Control District 4230 Kieman Avenue, Suite 130 Modesto, CA 95356 Subject System Start-up and Emission Verification Report Authority to Construct Permit No N-3478-1-0 Exxon RAS #7-0137 1605 S El Dorado Street, Stockton, CA Dear Mr Tuter On behalf of Exxon Company, U S A (Exxon), Fugro is submitttng this report documenting emission quantification for vapor extraction system start-up at the subject site (Figures 1 and 2) System start-up was performed on November 13, 1995 Two influent and two effluent samples were retrieved for laboratory analysis during start-up System operating parameters are presented in Table 1 The laboratory analytical reports are included in Attachment A and results are summarized in Table 2 influent extraction rates, effluent emission rates, and hydrocarbon emission control efficiencies are also summanzed in Table 2 An as- built process flow diagram including sampling locations is shown on Figure 3 The equations used for flow rate calculations and an example calculation are presented in Attachment B Authority To Construct Permit No N-3478-1-0 stipulates either the VOC control efficiency shall not be less than 95% or the total VOC emission rate shall not exceed 2 pounds in any one day, and the total VOC emission rate from the soil remediation system served by the catalytic oxidizer shall not exceed 6 5 pounds in any one day Based on the start-up data, the maximum VOC emission rate was deterniuned to be less than 2 7 lbs/day,with a 96 1 %control efficiency a 93471044 ARP A member of the Fugro group of companies with offices throughout the worlds