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3 <br /> _j <br /> N;Y] <br /> f' <br /> OR M <br /> (A Engincaiing.Scienca,and'fachnolo7Y <br /> rub <br /> MA Ml/ <br /> I it Ewil�E1 3P:'It <br /> fi <br /> 201?r.e Ilber 1991 <br /> RU I scoltO EIVi-4 <br /> Air PollutWil Insirccior 4�c 2 7 F") <br /> San Jo.lquin County Air P(IllutulEt('(lntr(!1 District G r k <br /> 1 <br /> RO.Box 2f>097rii i<I'.�1,1.111 <br /> 2321 1V,Waxhin};ton Sitret,Suite 1 'x '.'11.' =f;liVli,H, <br /> sux;kton,Odifomia 95201 <br /> RF:l4cporting of I lydrocarbon(=missions ar111 l)C%"ucti()n 1if rle'cncics for the Vapor Extraction <br /> and Treatment Sysicrn Operation at Chevron SSS)•1918,45 I larding Way,Stockton,CA <br /> Dcar Mr.1-sCQ113: <br /> Enclosed arc the results from effluent monitoring of the vapor extraction and treatment systc(tI <br /> of txmting at Chevron SS9-1918,45 Harding Way,Stockton, California. The thermal axidirtr <br /> has been in operation for 30 days since the end of the last reporting period(26 November 1991), <br /> The thermal oxidizCr data table(Table 1)includes analyiis date,operating temperature,hydro- <br /> carbon <br /> ydracarbon compound concentrations,average daily influent concentratton,and perCcl,t total volatile <br /> hydrocarbon destruction efficiency for cach effluent sample analyzed. Since the last reporting <br /> peritxi,all ef[lt ent samples have exceeded the 95%minimum destruction efficiency,averaging <br /> 99.27%dcstniction efficiency. <br /> Should you a l us a Tqucs winsreor at the this <br /> nurilb', )r the contents of this letter,please do not <br /> he,itate t <br /> Sincerely, <br /> rr ,. <br /> Joe Muehlecic <br /> Environmental Chemist <br /> Do.rglas£. .rtl.1'h.D. <br /> project Manager <br /> JD:n;wsa.5}4-r411(ty4tC1t,I7R9 <br /> Enclosures <br /> cc: Clint Rogers-Chevron <br /> --- -- -- -- - - —Nimy Meays=SanJoaquin County!'abl=e lEcalth Secu=res <br />