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Systenn Monitoring)January - Decembar 1994) 141 N. 8 Dorado Avenue Sal Vent System with Granulated Activated Carbon Air PemMt to Operate No N.1132-2.0 Authority to Construct No- N-1133-2-1 i Air Permit to Operate Conditions Max Airflowrate = 200 CFM, Max TPH cone = 32 ppmv {gasohrte) or 188 ppmv {methane/ Date Trine Wella Fresh :Vapor Temp Pitot Tube Airflow Airflow Concentrunon Benzene TPH =1d ul TPF/ Open to Air Valves action Velocity (avg) (avg) Influent influent Effluent Extraction Venting Condition cuum Pressure (4 in pipe) (ppmv) (Ppmv) (Ppmv) (ppmv) Ilbimate Comments H2O d F in H2O ACFM SGFM FID av )LAB LAB Fiv LAB 117194 9 30 VEW 1 2 3 4 closed 45 82 0 17 1 1 7 114 140 99 0 038 3 6 1167 1127/94 VEW 1 2 3 4 closed System shut down (1127/941 3/17/94 13 45 VEW 1 2 3 4 closed 40 75 0 16 141 140 207 110 ND(<0 16) 0 9 3 4 9 1167' Restarted system (3/17/94) after GAC replacement 415/94 11 15 VEW 1 2 4 Closed 40 103 0 15 140 132 91 85 ND(<0 161 0 3 9 3 6 1247 4119/94 15 30 VEW 1 2 3 4 closed 40 109 0 15 145 135 160 9 8 6 9 5/3/9411 50 VEW 1 2 3 4 closed 45 104 0 14 135 127 30 68 0 79 1 1 2 2 8 1337 5/17/94 13 45 VEW-1 2 3 4 closed 43 101 0 15 139 127 80 57 ND(<0 08) 5 8 3 3 2 3 1373 6/11/94111 00 VEW-1 2 3 4 closed 43 117 0 14 137 126 44 51 041 1 2 1 8 2 1 1406 6/13/94030 VEW-1 2 3 4 closed 43 117 014 137 126 40 6113 7/8194 i 1 6 System Shutdown (6113 -7/8 941 for remediation system modification 7111/94945 VEW-1 2 3 4 MW 3 partially open 31 74 0 6 153 152 56 24 ND(<O 1 6) 7 2 7 1 2 1406• 8/23194 15 30 VEW-1 2 3 4 MW 3 partially open 15 83 0 24 97 95 40 45 ND(<0 016) 0 1 2 1 4 1462 9120/94 10 55 VEW-1 2 3 4 MW.3 closed 35 114 0 16 146 135 38 45 ND(<0 016) 0 1 6 1 9 1 508 10/4194 16 40 VIEW-11 2 3 4 MW-3 closed 38 106 0 16 145 136 26 34 NO(<0 016) 0 1 1 1 5 1532 11/16/94 13 30 VEW 1 2 3 4 MW 3 closed 38 1 1 9 0 15 142 130 11 9 4 ND(<0 016) 0 0 5 O 4 1573 11/29- 12/16/94 System sI*ut down dui to electrical problem on Control 12r30194 1 2 30 VEW-1 2 3 4 MW-3 closed 35 179 1 0 15 1 142 130 1 37 NO(<0 080) 1 5 1580 panel 111 -12/16/941 Notes System consists of one regenerative blower with 5 hp motor and two 2000 Ib GAC units in series {Unit 1 and Unit 2) System start-up was conducted by Aegis Environmentai (now Fugro West) on 6123/93 avg = average of three sets of measurements collected at 15 minute intervals GAC = granular activated carbon Airflow measured between Unit 1 and Unit 2 except on 7/11/94 and 8/23/94 Airflow measured at the vent well manifold on 7/11/94 and 8/23/94 Influent = prior to Unit 1/soil vent blower discharge Effluent = Unit 2 (atmospheric discharge) TPH = total petroleum hydrocarbons as gasoline ppmv = parts per million by volume FID -field measurement from flame ionization detector calibrated to hexane(Model Century OVA 128 by Foxboro Company) LAB = laboratory analysis NO = not detected at indicated reporting limit ACFM = actual cubic feet per minute SC FM = standard cubic feet per minute 04 7 PSI and 70 deg F) PSI = pounds/square inch See attached extraction rate calculation Cumulative extraction is calculated by averaging extraction rates for consecutive sampling events and summing up previous total 'Cumulative TPI) extraction calculations do not include TPH extraction between 1/7-1/27 & 7/8-7/11194 System operation log (as required by the air permit) is kept on site 1 Tourvro• vi c