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Emcon <br /> 1433 North Market Boulevard • Sacramento'rCc�irtornrQ9S$. 4-i <br /> C a . , tl�9�1 •¢(9t(M?1928-3300• Fox(916)928-3341 <br /> L _� : �,t�_i� <br /> August 24, 1995 <br /> Project 0805-114 04 <br /> Mr Bruce Tuter <br /> San Joaquin Valley Unified Air Pollution Control District <br /> 4230 Kierman Avenue <br /> Modesto, California 95356 <br /> Re Source Test Results for the Soil Vapor Extraction and Abatement System for ARCO <br /> Service Station No 2130, Located at 7906 North El Dorado Street, Stockton, California <br /> Dear Mr Tuter <br /> On behalf on ARCO Products Company (ARCO), EMCON has prepared this report regarding the <br /> source test results for the soil vapor extraction and treatment system (SUETS) installed at the <br /> ARCO Service Station No 2130, located at 7906 North El Dorado Street, Stockton, California <br /> The remediation system, which consists of an AIREX KATOX 100000 catalytic oxidizer, is <br /> connected to vapor extraction wells located throughout the site (Authority to Construct [ATC] <br /> Permit No N-3218-1-0) <br /> The AIREX KATOX 100000 (rated at 100 standard cubic feet per minute) incorporates a <br /> I0-horsepower vacuum blower to extract petroleum hydrocarbon-laden soil vapors The extracted <br /> soil vapors are catalytically oxidized by the AIREX KATOX, abating the hydrocarbons prior to <br /> discharge to the atmosphere Electricity is used to maintain the proper catalytic oxidizer <br /> temperature (700-750°F) <br /> EMCON conducted a 1-day source test on August 10, 1995, consistent with the requirements <br /> identified in the conditions listed in the ATC (Permit No N-3218-1-0) Samples were collected <br /> from both influent and effluent vapors These samples were subsequently analyzed for total <br /> petroleum hydrocarbons as gasoline (TPHG), and benzene, toluene, ethylbenzene, and total <br /> xylenes (BTEX) A photoionization detector (PID) was used to determine the concentration of <br /> volatile organic compounds (VOCs) in the influent and effluent vapors The results were used to <br /> determine the destruction and removal efficiencies and mass emission rates <br /> Influent and effluent vapor samples were collected in pre-cleaned and evacuated summa canisters, <br /> supplied by Performance Analytical, Inc , a state-certified analytical laboratory The canisters <br /> were then duly sealed and forwarded to the laboratory for analysis, accompanied by the <br /> appropriate chain-of-custody documentation Both the laboratory results for the vapor samples <br /> and the chain-of-custody documentation are included as Appendix A <br /> The following parameters were measured during the source test <br /> • Soil vapor and total flow rates <br /> { • Influent,combustion, and effluent temperatures <br /> • Applied vacuum on the vapor extraction wells <br /> • Concentration of influent and effluent vapors with a PID <br /> S AL1N 1P1010805108051140 4DS-95*pt t <br />