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System Mowtoring 1Janaary 1994 -October 19951 141 PL 2 Dorado Avapro Sal Va1t System wrth Grami:W d Actllrated Carbon Air Perms to Operate Conditions Max. Airflowrate — 200 CFM, Max TPH conc s 32 ppmv (gasoline)or 168 pprrnf (methane) • Date woos Fresh SOA Vapor Airflow Puametam Airflow Airflow TRH Concentration awnerm TPH TPF! TPH Currul TPH open to Air Valves Extraction Plot wbe (avg) (avq 1 IrtRuenl Cone Influent Cone Effluent Cone Extraction Extraction Extr EsOrmts Ventiry COridlllon Vacuum Temp rwo rypr"swe 14 In pipe] JR0 avg 1 4LAM (LABS IFID) (FID) ILABI (LAB) Cormlents On H20) ( I) Rn H2O1 (ACFFM ISCRNI I W1 t M4 ( m,.) I aril ilbsIda abs/da ) (tbsl 1(7194 VIEW 1 2.3 4 closed 45 82 Oil 117 114 140 99 0 038 3 8 1167 7/27194 VIEW 1 2 3 4 closed System shut down(1127194) 3117194 VIEW 1 2 3 4 closed 40 75 0 16 141 140 207 110 ND(<0 18) 0 93 A9 1167' Restarted system(3117194) after GAC replacement 415194 VEW 1 2 4 closed 40 103 0 75 140 132 91 8s N0(<0 16) 0 39 36 1247 4119194 VEW 1 2 3 4 dosed 40 109 ale 145 135 160 98 09 513194 VFW 1 2 3 4 Closed 45 104 014 135 127 30 68 019 1 1 2 28 1337 5117194 VEW 1 2 3 4 dosed 43 101 0 15 139 127 80 57 ND(<0 08) S 8 33 22 1373 617194 VEIN 1 2 3 4 dosed A3 117 014 137 126 44 51 041 1 2 1 8 2 1 1408 6113144 VIEW 1 2 3 4 dosed 43 117 014 137 126 40 1 1 6 System shutdown(6113-718194; for 8113 718194 remediation system modification 7111194 VEW 1 2,2 4 MW 3 partiaoy open 31 74 06 153 152 5e 24 ND(<0 161 7 27 1 2 1408• 8123194 VEW 1 2 3 4,MW-3 pardaOy open 15 83 024 97 95 40 45 NDt<0 0181 0 1 2 1 4 1482 4120194 VEW 1 2,3 4.MW 3 closed 35 114 0 16 146 135 38 45 ND(<O 0161 0 1 6 1 9 1508 1014194 VEW-1 2 3 4,MW 3 dosed 38 106 016 148 138 26 34 N0(<0 016) 0 1 1 1 5 1532 11116/94 VEW 1 2 3 4,MW 3 closed 38 119 0 15 142 130 11 94 N0(<0 016) 0 0 5 0 4 1573 11129 12116/94 System shut down due to 12130194 VIEW 1 2 3 4,MW 3 closed 35 119 0 15 142 130 37 ND(<0 0801 1 5 1580 electrical problem on control 1/30195 YEW 1 2 3 4.Mw 3 dosed 39 107 0 14 135 126 20 12 Nal<O 0161 0 as 05 1803 panel 111129-1 2/1 6194) 217/95 VEW-t 2 3 4 MW-3 dosed 43 106 014 135 125 11 16 No(<0 016) 0 04 06 1607 2123148 1616 Shut down systerrlistart pulsing 319195 VIEW 1 2 3 4,MW-3 dosed 38 112 GIs 141 131 18 12 0 038 0 03 05 1616 Restarted system 3122195 VEW 1 2 3 4,MW 3 closed 14 Shut down system after morntonng 4170!95 VEW-1 2 3 4,MW-3 closed 40 119 0 12 127 116 38 15 ND(<0 0161 6 1 4 06 1624 Restarted system, sampled after app 1 hr 4125('5 VEW-1 43 4 MW 3 closed 15 Shut down system after morrtonng 111119s VEW 1 2,3 4,Mw 3 dosed 40 80 014 132 130 la 99 ND(<a 016) 2 04 06 1032 Restarted system,Sampled after app 1 hr 5/22195 VEW-1 2,3 4.MW-2 dosed 5 Shut down system after moratoring 017193 VFW-1 2 3 4.MW 3 closed 44 75 014 132 131 18 12 ND(<0 0161 8 07 05 1846 Restarted system,Sampled after app 1 hr 6120195 VEW 7 2 3 4.MW-3 closed 4 Shut down system after mentoring 7/3195 VIEW 1 2 3 CMW 3 closed 38 87 014 133 129 25 10 ND(<0 016) 0 1 07 1048 Restarted system, sampled after app 1 hr 7118195 VIEW 1 2 3 4.MW 3 dosed Shut down system. 813195 VIEW 1 2 3 4,MW 3 Closed 38 103 014 135 127 20 10 ND(<O 018) a 08 04 1856 Restarted system,sartrpled after app 1 nr 8117195 VIEW 1 2 3 4.MW 3 closed 38 113 014 136 126 8 0 a 3 Shut down system after monitoring 915/95 VEIN-1 VEIN 2 dosed 48 90 01 113 109 33 13 0 017 1 1 2 0 5 1083 Restarted system,sampled after app 1 hr 9119/971 VEW-1 YEW 2 closed 55 128 009 104 94 48 4 1 4 10/3195 VIEW 1 VIEW 2 Closed 55 120 all 121 111 40 28 N04<0 018) 0 1 4 1 1684 Notes System consists of one regenerative blower wrath 5 hp motor and two 2000 Ib GAC units in series (Urtt 1 and Unit 2) System start-up was conducted by Aegis Environmentat (now Fugro West, Inc) on 6123/93 System was previously operated by Resna kxkwmes avg = average of three sets of measurements collected at 15 rninute intervals GAC - granular activated carbon Airflow measured between Carbon Unit 1 and Unit 2 except on 7111194 and 8123194 Airflow measured at the vert well manifold on 7/11194 and 8123194 Influent — prior to Unit 1/sal vent blower discharge Effluent — Unit 2(atmospheric discharge) TPH — total petrolatum hydrocarbons as gasoline in. H2O — inches water coltrm IIID-field measurement from flame conization detector calibrated to hexane(Model Canary OVA 128 by Foxboro Company) ppmv - parts per million by volume LAB — laboratory analysis ACFM — actual cubic feet per rninute SCFM — standard cubic feet per mnute(at 29 92 Inches mercury, and 70 deg F) ND — not detected at indicated reporting limit See attached extraction rate calculation Cumulative extraction is calculated by averaging extraction rates for consecutive sar pling events and surm>tng up previous total •Cumulative TPH extraction calculations do not include TPH extraction between 1/7-1/27&718-7111194 For cumulative TPH extraction calculation after 12130/94,system operation hours are esnmated based on field observations TPHEXMA XLS