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TABLE 2 <br /> VMP Sampling(December 4,2000)at Phase III SVE Shutdown <br /> Applied Aerospace Structures Corporation,Stockton,CA <br /> Concentrations in VMP soil vapor samples(Mg/M3)A <br /> Conc.Total % Conc.Total % <br /> Sample 1,1-DCE 1'1'1 1,1 1,2 Increase TCE PCE Totals VOC on (g/28/00 VOC on Increase <br /> Location TCA DCA DCA (mg/m3) 9/28/00 3/4/99 (3/4/99 <br /> (mg/m3) to <br /> (mg <br /> 12/ /m3) 12/to <br /> Detection limit0.40 0.55 0.41 0.41 0.54 0.68 <br /> VMP-1-15 1.3 1.3 1.9 -31.6 72 -98.2 <br /> VMP-1-34 1.81.8 6.3 -71.4 776 -99.8 <br /> .................. .................. ......... <br /> e a :.:.::':.i ::eiii::::i 1.4 - <br /> VMP-1-34 1.3° 0.05° <br /> VMP-1�5c 18 1.2 19.2 115 83 NS <br /> 0.72 <0.55 0.72 - <br /> VMP-2-15 ND 0.6 100 15 100 <br /> VMP-2-34 ND 0.4 -100 77 -100 <br /> VMP-2 45 1.11.1 0.7 57.1 NS - <br /> VMP-3-27 0.48 3.5 4.0 5.9 -33 60 -93.4 <br /> VMP-3-36 1127 38 49 -22 124 -69.4 <br /> VMP-3-36 8 14.21 ?':'''''''? 38.4° 4 52.6 <br /> VMP-3-41 16 35 51 58 -12 153 -66.7 <br /> 15 34 <br /> VMP 4-22 1.2 1.2 ND + NS - <br /> VMP 4-37 1.4 1.4 0.7 100 187 -99.3 <br /> VMP-4-45 Sample Not Collected-screen flooded NS NS - NS - <br /> VMP-5-23 0.71 0.71 0.9 -21 512 -99.9 <br /> VMP-5-38 6.6 1.2 0.6 8.4 28.0 -70 834 -99.0 <br /> VMP-5-38 8 8.51 1.61 ...........° ° 10.1 28 64 - - <br /> VMP-5 48 1.1 1.4 2.5 NS -- NS - <br /> VMP 6-37 11 1.7 13 22 -42 790 -98.4 <br /> VMP-6-37 8 16.4° r 1.6° :i;::::::::::i:::;:::':::° ::e - - - - <br /> .. ............... ......... <br /> 18 <br /> VMP-6-48 Sample Not Collected-screen obstructed NS NS - NS - <br /> Chemical abbreviations: DCE=dichloroethene,TCA=trichloroethane,DCA=dichloroethane,TCE=trichloroethene,PCE=tetrachloroethene, <br /> TMB=trimethylbenzene,McCI=Methylene Chloride <br /> ^ :Concentrations determined by Method TO-14;analytes not listed were not detected. <br /> ° Summa canister confirmation samples collected on 12/4/00. Fixed base laboratory method detection limits were 1,1-DCE=0.01 to 0.15 mg/m3; <br /> 1,1,1-TCA=0.02 tp 0.2 mg/m3;TCE=0.02 tp 0.2 mg/m3;1,1-DCA=0.01 to 0.15 mg/m3;1,2-DCA=0.01 to 0.15 mg/m3;PCE=0.02 to 0.25 mg/m: <br /> ° Duplicate sample low concentration,probably due to low vapor in well. Nigher value used for interpretation. <br /> Not detected <br /> NS Not sampled <br /> 0 Not applicable <br /> 0 increase was positive,but the percentage is unknown <br /> Note: Units in mg/m3. Conversion to ppmv is chemical specific: divide by 4.03 for ppmv 1,1-DCE and 5.53 for TCE. <br /> As_tune3.)ds:VMP analyses_De 4'00 1/10/01 <br />