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TABLE 1 (CONTD.)-RESULTS OF LABORATORY ANALYSIS OF GROUND VATRR SAMPLES CONCENTRATIONS IN PARTS PER BILLION IPPB) FORMER MOBIL SERVICE STATION 1 10-NP4 PROJECT HUMBER 1 30-140 WELL DATE OF DEPTH TO GROUND VATO TPH-G B T B x ANALYTICAL ID SAMPLING/ VATRR ELEVATION (8015) (8020/ (8020/ (8020/ (8020/ LAB MONITORING (TOC-FT) (ft above asl) . 602) 602) 602) 602). MI-7 02/09/87 --- --- 6300 420 92 --- 1200 SAL KV-7 09/21/87 --- --- ND<50 ND<0.5 ND<0.5 --- ND<0.5 SAL MV-7 10/20/87 --- --- 65 ND<0.5 ND(0.5 --- 0.0? SAL MV-7 11/20/87 --- --- ND(50 ND(0.5 ND<0.5 --- ND(0.5 SAL MV-7 03/13/88 6.75 --- --- --- --- --- --- SAL KV-7 03/23/88 6.96 --- 57 5.9 ND<0.5 --- 1 SAL KV77 06/07/88 6.75 --- --- --- --- --- --- S&L KV-7 10/13/88 --- ND<50 ND(0.5 ND<0.5 ND<0.5 VD0.5 SAL KV-7 10/18/88 7.10 93.99 --- --- --- --- --- SAL "' MV-7 02/15/90 5.80 94.55 3400 9.4 7.3 70 170 SAL ASV-7 07/12/90 6.66 93.94 ND<50 ND<0.3 MD0.3 ND(0.3 91)<0.3 SAL 04 09/21/87' --- --- 2200 32 3 --- 480 SAL MV-8 10/20/8? --- --- 3800 20 5 --- 210 SAL MV-8 11/20/87 --- --- 140 MD(0.5 ND<0.5 --- 16 SAL KV-8 03/13/88 6.08 --- --- --- --- - --- SAL MV-8 03/23/86 6.00 --- 15000 280 210 --- 3000 SAL KV-8 06/07/88 6.20 --- --- --- --- --- --- SAL MV-8 10/13/88 --- --- 3400 28 ND<0.5 ND<0.5 630 SAL W-8 10/18/86 6.53 93.69 --- --- --- --- --- SAL KV-8 02/15/90 6.55 94.66 ND(50 ND<0.3 ND<0.3 ND<0.3 ND<0.3 SAL MV-8 07/12/90 5.98 93.73 11000 27 13 . 360 1000 SAL P-1 04/26/90 5.35 95.35 100 ND(0.3 ND<0.3 ND<O.3 ND(0.3 Al P-1 07/12/90 5.58 95.09 70 MD<0.3 ND<0.3 1.3 0.6 SAL P-1 04/!6/90 4.94 95.66 ND(50 ND<0.3 00.3 ND<0.3 9110.3 AI P-2 07/12/90 5.21 95.39 ND<50 KD(0.3 ND<0.3 ND<0.3 ND<0.3 SAL EXPLANATION OF ABBREVIATIONS: - - - TPH-G : Total Petroleum Hydrocarbons as Gasoline TOG Total Oil and Grease (EPA method 503D A 5038) SAL Superior Analytical Laboratory (EPA method 8015 aodified) --- Not analysed GM : GM Labs TPH-D : Total Petroleum Hydrocarbons as Diesel NA Not applicable/Not available PACE : PACE Labs (EPA method 8015 modified) ND Not Detected MT Ked-Tox Associates B Benzene (EPA method 8020) TB : Trip Blank ITC International Technology Corporation T Toluene (RPA method 8020) D Duplicate BCL : Brom and Caldwell Laboratories E Ethylbenzene (EPA method 8020) ft above msl : Peet Above Kean Sea Level x xylenes (EPA method 8020) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- NOTES: I. Depth to (later level measured from top of yell casing (in feet). 2. FP* = Free Product, Not Sampled.