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• • i <br /> CHANGE IN HYDROCARBON LEVELS <br /> Sampling Location 3-Dec-93 4-Jan-94 3-Fab-94 2-Mar-94 3-May-94 <br /> MP-Well: MP' <br /> Benzene (mglL) 0.130 NIS NIS NIS 0.120 <br /> Total BTEX (mg1L) 0.35 NIS NIS NIS 0.17 <br /> GRO (mg/L) NIS NIS NIS NIS 0.44 <br /> WP-3: MP <br /> Benzene (mglL) NIS 0 096 0.005 0 034 0.035 <br /> Total BTEX (mglL) NIS 0.152 0.009 0.050 0.045 <br /> GRO (mglL) N1S 0.4 ND(0.1) 0.14 0.11 <br /> WP-3: MP (Duplicate) �y <br /> Benzene (mg1L) 0.036 <br /> Total BTEX (mglL) 0.054 <br /> GRO (mglL) 0.12 N <br /> WP-1: SA2 <br /> Benzene (mg/L) 0200 NIS NIS ND(0.0025) 0.019 <br /> Total BTEX (mglL) 0.21 NIS NIS ND 0 019 <br /> GRO (mglL) NIS NIS NIS ND(0.2) ND(0.1) <br /> ' Magnesium Peroxide Site• WP-3 located 5 feet down-gradient from magnesium peroxide injection point <br /> (MP-Well) <br /> Sparging array site: WP-1 located 5 feet down-gradient from sparging line. <br /> NIS Not sampled <br />