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Stantec <br /> Monthly Status Report - May 2093 <br /> Chevron Facility #92033 - Stockton Charter Way Commingled Plume No . CP0057 <br /> June 14 , 2013 <br /> SVE System Performance <br /> The SVE system operated above the minimum oxidizer temperature of 1 , 400 ° F as required by <br /> the SJVAPCD ATC . Using the flow rate data collected on the SVE system and the influent and <br /> effluent vapor analytical results in parts per million by volume ( ppmv) , the petroleum <br /> hydrocarbon recovery and emission rates were estimated . The SVE system recovered TPHg at <br /> a recovery rate of 36 . 73 pounds per day ( lbs/day) , benzene at 0 . 03 lbs/day , and MTBE at 0 . 01 <br /> lbs/day . During the 421 hours of operation in May 2013 , the SVE system recovered <br /> approximately 644 . 36 lbs of TPHg , 0 . 46 lbs of benzene , and 0 . 25 lbs of MTBE . <br /> The SVE system emitted TPHg at a rate of 0 . 33 lbs/day, benzene at 0 . 003 lbs/day, and MTBE <br /> at 0 . 006 lbs/day, which are below the SJVAPCD ATC emission limit of 54 . 2 lbs/day or 2 lbs/day <br /> if control efficiency is less than 95 % . Using the TPHg recovery and emission rates , the thermal . <br /> catalytic oxidizer control efficiency was estimated to be approximately 99% . Based on these <br /> system results , the Chevron Facility #92033 SVE system located at 508 West Dr . Martin Luther <br /> King Jr. Boulevard in Stockton , California complied with the SJVAPCD ATC No . N - 8790- 1 -0 <br /> requirements in May 2013 . <br /> SVE SYSTEM OPERATION AND PERFORMANCE <br /> Equipment inventory : SVE with 10 hp , 300 scfm blower and thermal - <br /> catalytic oxidizer <br /> SJVAPCD ATC No . W8790- 1 - 0 <br /> Operating mode : Thermal <br /> Reporting period : May 2013 (April 26 , 2013 through May 24 , 2013 ) <br /> Period flow rate influent (scfm ) : Average : 134 <br /> Period applied vacuum ( inches of water) : Average : 5 . 06 <br /> Period operating hours / percentage 421 / 84 % of scheduled runtime <br /> operational : <br /> Operating hours since startup / 975 / 77 % of scheduled runtime <br /> Percentage operational since startup : <br /> Constituent : TPHg Benzene MTBE <br /> Period influent concentrations ( ppmv) : 270 0 . 79 0 . 46 <br /> Period mass recovery rate ( lbs/day) : 36 . 73 0 . 03 0 . 01 <br /> Period mass emission rate ( lbs/day) : 0 . 33 0 . 003 0 . 006 <br /> Period mass recovered ( lbs ) : 644 . 36 0 . 46 0 . 25 <br /> Cumulative mass recovered (lbs ) : 1 , 548 . 45 2 . 70 0 . 87 <br /> AS System Description <br /> The AS system consists of twelve sparge wells (AS - 1 through AS - 12 ) and a PRM AS system . <br /> The PRM AS system includes a 15 horsepower ( hp ) rotary claw air compressor capable of <br /> generating flows up to 60 scfm at 30 pounds per square inch ( psi ) , a 1 /2 hp after-cooler, and a <br /> 12- leg manifold . The after cooler decreases the temperature of the air generated from the air <br /> compressor . Process air flow is then routed through the 12- leg manifold to the sparge wells . <br /> Stockton Charter Way Commingled Plume Monthly Status Report - May. doc 3 <br />