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�N4�P+1'Y+;�'s?* �+�iFrr�wryx�?n!r ... ,. - �ws�c�s - -,--�-• eye _ ��r_ � _ _T ��. <br /> C S <br /> Table 1 30WS-4 <br /> Vapor-Extraction Test Monitoring Data <br /> ARCO Service Station No. 2076 <br /> 800 Kettlernan, Lodi, California <br /> F' July 30, 1991 <br /> Air Stream Conditions frr Vapor Extraction Well <br /> VW-3 <br /> Time Flow Vacuum Temp. Conc. <br /> (CFM) (in H2O) (F) (ppmv) <br /> 09:45 NR I NR NR NR <br /> 10:30 24 3.0 1 88 { l l0 <br /> Air Stream Conditions for Vapor)extraction Well <br /> VW-2 <br /> Flow Vacuum Temp. Conc. <br /> Time <br /> (CFM) (in 1-120) (F) (ppmv) <br /> 11:00 NR NR !, NR NR <br /> 11:34 26 2.4 90 j <1D0 <br /> Air Stream Conditions for Well Vacuum <br /> Vapor Extraction Well VW-1 Influences <br /> Tisne Flow Vacuum Temp. Conc. VW-2 VW-3 <br /> (cfm) (in H2O) (F) (ppmv) (in H2O) (in H2O) <br /> 12:00 22 3.2 1 96 j 120 1.00 I 0.07 <br /> 12.30 22 2.5I 96 <100 0.101 0.07 <br /> 13:00 24 1 2.7 1 96 1 <100 , 0.09 j 0.06 <br /> 13:30 39 7.4 1 90 # <50 1 0.26 0.24 , <br /> 14:00 1 37 I 7.4 1 90 <50 0.30 1 0.24 <br /> 14:30 39 8.41 901 <50 0.34 0.28 <br /> 15:00 39 8.4 I 9D <50 0.34 0.28 <br /> _ 15:30 41 I 3.S i 90 I <50 0.3d 0.28 <br /> 0.28 <br /> 16:00 j 41 8.5 1 90 <50 0.3 3 j <br /> Distance from extraction well VW-I (feet) <br /> 30.5 36.0 <br /> Results of Laboratory Analysis for Vapor Samples <br /> Time Sample Location TPHg Benzene Toluene Ethyl- Total <br /> benzene Xvlenes <br /> dumber e /m"3) <br /> (mglm"3) (mg/m'3) (mg/m^3) (mglrn 3) (mg <br /> 3801 LS 3.2 ().941 0.53 <br /> 10:30 0730-ASI VW-3, Influent I 8738 4.2 1 19 <br /> 11:30 X0730-A521VW-2. Influent 1.900 I 21 I 3.2 I 12 <br /> 12:30 0730-AS31VW-1. Influent 1 5.600 . 33 4 -t1.8 1 9.3 <br /> 14:00 10730-A54 VW-1, Influent 370 1 12 I 180 6.4 5.1 j <br /> 16:D0 10730-A S5 I VW-1. Influent j <br /> Notes <br /> in H2O= inches of water column vacuum <br /> -- - ------- - _- --- mglm"3_-- Milligrams per cubic macer - ----- - <br /> ----------- ----- <br /> TPHg= Total Petroleum Hydrocarbons reported gasaliec cmp• em as - <br /> h- F= degrees Fnrenheit <br /> efm= cubic feet per minute <br /> NR= Not Recorded <br /> Cotte.= field concentration measured with s <br /> _. <100= less than instrumentation detection limit <br /> lower explosive limit sensor <br /> ppmv= parts per million volume <br /> tw.+ <br /> Al <br />