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MW-3 TRENDS, SCREENED ?-58' <br /> SAMPLE DAYS B TPHg MTBE 9,2-DCA [ <br /> DATE ppb ppb ppMW-3 BENZENE TREND <br /> 511195 0 1300 5100 <br /> 713/96 429 430 1920 1500 <br /> 1/24/97 634 238 2340 I _ <br /> 12129/98 1338 9 80 ND<20 ; 1000 ; <br /> 7119199 1540 7 ND<50 ND<5 500 Y= 0.129x+424.2 <br /> 5/17/00 1843 187 578 0 <br /> 8/30100 1948 20 210 0 Y= <br /> 12122100 2062 19 210 <br /> 0 1000 2000 3000 4000 5000 6400 � <br /> 3130101 2160 5 61 <br /> 6127/01 2249 5 96 DAYS <br /> 9119101 2333 3.1 112 <br /> 12/14101 2419 7.1 106 PRE-PUMPING BENZENE POST PUMPING BENZENE <br /> 2/8/02 2475 5.8 92.4 <br /> 6/18/02 2605 5.2 77.8 <br /> 9/17102 2696 6.4 103 *NON-DETECTABLE CONCENTRATIONS OF BENZENE BEFORE AND AFTER PUMPING <br /> 12/30102 2800 6.6 84.4 ND<l 6.2 <br /> 3128103 2888 3.9 53.2 ND<0.5 6.2 <br /> 6125/03 2977 4 50.7 ND<0.5 5.8 -3 TPHg TREND <br /> 9/25/03 3069 8.4 89 ND<0.5 6.1 <br /> 12/17/03 3152 5.4 ND<50 ND<0.5 3.7 6000 <br /> 3123104 3249 7.3 51.1 ND<0.5 3.2 0 595 +1986. I <br /> 6111104 3329 6.7 52.3 ND<0.5 3 <br /> a 4000 - Y= <br /> 12/16104 3517 6.7 53.5 ND<0.5 4.1 2000 <br /> 6/16106 4064 ND<0.5 ND<50 ND<0.5 1.9 <br /> 9/11106 4151 ND<.5 ND<50 ND<0.5 1.7 0 I <br /> 12/8106 4239 ND<.5 ND<50 ND<0.5 2.7 <br /> 3114107 4335 ND<.5 ND<50 ND<0.5 2.1 0 1000 2000 3000 4000 5000 6000 <br /> 6126/07 4439 ND<.5 ND<50 ND<0.5 2.5 DAYS <br /> 9117/07 4522 ND<.5 ND<50 ND<0.5 2.9 <br /> 12/11107 4607 2.2 ND<50 ND<0.5 2.3 PRE-PUMPING TPHg POST PUMPING TPHg <br /> 3124108 4711 17 ND<50 ND<0.5 1.6 <br /> 6117108 4796 ND<.5 ND<50 ND<0.5 1.1 <br /> 9/26/08 4897 3.6 ND<50 ND<0.5 ND<0.5 *NON-DETECTABLE CONCENTRATIONS OF TPHg BEFORE AND AFTER PUMPING <br /> 12/18108 4980 8.3 ND<50 ND<0.5 0.56 <br /> 3/9/10 5426 ND<.5 ND<50 ND<0.5 0.56 <br /> 3/23112 6171 ND<.5 ND<50 ND<0.5 1.1 <br /> 36 of 82 <br />