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Table 1
<br /> Petroleum Hydrocarbon Recovery Monitoring(June 1993 -July 1996)
<br /> 141 N.El Dorado Avenue,Stockton,CA
<br /> Sail Vent System with Granulated Activated Carbon
<br /> Date Wells Fresh Sol Vapor Alrltow AMflow TPN Concentration Benzene TPH TPH Cumul.TPH
<br /> Open to Air Valves Extraction (a sI (ray.) wauent Influent Extraction Extraction Extraction
<br /> Venting Condbon Vacuum Rate Rate F_sbmata
<br /> (4 In.pipe) (FID.".) (LAB) (IAB) (FID) (LAB) (IAB) Comments
<br /> On.lr20) (ACFM) (SCFµ (pp-) ( rnv) (ppmv) (Ibsfday) Obs/day) Ib3)
<br /> 8211193 1,2,3,4 closed -40 154 143 450 220 ND(40.16) 20.7 10.1 Restarted system after GAC replacement
<br /> 716(93 EW-1,2.3,4 closed -48 155 140 150 7.2
<br /> 7113093 vIEV44A closed .50 128 114 200 450 0.3 7.3 18.5 201
<br /> 720193 EW-1,2, closed 48 139 124 233 9.3
<br /> 1127193 EW-1,2, closed 47 123 110 267 9.4
<br /> lW11
<br /> 2193 6YW1,2, closed -47 134 118 263 220 ND(<0.6) 10.7 8.3 481
<br /> 019 113 EMP-11.2. closed -47 132 120 253 IT7197 EW-1.2, closed -4e 138 124 380 • 14.3 -tLV Snmgwmbusdble pts meter reading)
<br /> 126193 EVV-1,2, closed 48 134 119 2418 9.7
<br /> 911193 EW-1,2, ctosed -51 143 120 440 too ND(c0.10) 10.1 8.8 677
<br /> 310:48 VEW1.2. closed -51 121 til 220 7.8
<br /> 311:30 EW-1,2,3,4 closed 35 168 153 120 5.9
<br /> 14193 EW-1,2,3,4 closed -34 170 158 SS 3.3 "Suspect readinglequipment malfunction
<br /> 111193 EW-1,2,3,4 closed .33 209 187 130 7.8 System shut down(9121194)
<br /> 1114193 EW-1,2,3,4 closed •35 113 108 840 260 ND(K0.18) 18.7 9.7 840 System restart(1114094)
<br /> 11118!93 EVV-1.2.3,4 closed -31 94 90 280 8.1 fter GAC replacement
<br /> 122183 VEV6L2,3 closed -30 100 97 530 130 NO(Q.18) 18.5 4 1030
<br /> 12/16193 1,2,3,4 closed -65 123 120 447 17.2
<br /> Inl94 EW-1,2,3,4 closed -45 117 114 140 119 0.038 3.6 lie?
<br /> 127194 EW-1,2,3,4 closed System shut dawn(1127144)
<br /> 3117194 EW-1,2,3,4 Nosed 40 141 140 201 110 ND(�0,18) 9.3 4.9 1187"' Restarted system(3117194)
<br /> 415194 kE1W1YLl,2,4 closed -40 140 132 91 88 ND(�0.16) 3.9 3.6 1247
<br /> 4119M 1,2,3,4 closed -40 145 133 160 6.9
<br /> 513194 1,2,3,4 closed -45 133 127 30 68 0.19 1.2 2.8 1337
<br /> 5117194 1,2,3,4 closed -43 139 127 80 87 ND(40.08) 3.3 2.3 1373 t
<br /> System consists of one regenerative blower with 5 hp motor and bvo 2000 Ib GAC units In serMs(Unit 1 end Unit 2)
<br /> System Mad-up was conducted by Aegis Environmental(now Fugto West,Inc.)on 5!23!93. System vat prsvlotraly operated by Resna Industries.
<br /> avg.=average of three seta of measurements collected at 18 minute Intervals
<br /> GAC=granular activated carbon
<br /> Airflow measured between Carbon Unit 1 and Unit 2 except on 1111194 and 823194. Airflow measured at Ote vent well mantold an 7111194 and 823194
<br /> Influent-prior to Unit 11so1 vent blower discharge
<br /> TPH=total petroleum hydrocarbons as gasollne
<br /> ppmv-parts per mesion by volume
<br /> FID-livid measurement Rom flame ionization detector calibrated to hexane(Medel:Century OVA 126 by Foxboro Company)
<br /> LAB.laboratory analysis
<br /> ND a not detected at Indicated reporting limit
<br /> ACFM-actual cublc feet per minute
<br /> SCFM.standard cubic feel per minute(at 29,92 Inches mercury, and 70 deg.F)
<br /> Cumulative extraction Is calculated by averaging extraction rates for consecutive sampling events and summing up previous total
<br /> -Cumulative TPH extraction calculations do not Include TPH extraction between 111-127&718.7/11194
<br /> For cumulative TPH utaction caicutatbn after 1IMM4,system operation hour*are estimated based on field observations
<br /> gvnt1TRI Yl 4;
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