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--- ---- ------ --- ---------- ----- <br /> MW-2R TRENDS, SCREENED 23-33' <br /> SAMPLE DAYS B TPHg MTBE 1,2-DCA <br /> DATE ppb ppb ppb ppb i -2R BENZENE TREND <br /> 5/1/95 0 <br /> 7/19/99 1540 928 70400 13 8000 <br /> 11/24/99 1668 533 83300 ND<250 <br /> :6 6000 <br /> CL <br /> 5/17/00 1843 6840 93200 CL4000 J-1 <br /> 8/30/00 1948 1760 78300 iy -0.379x+2 4 i <br /> 12/22/00 2062 1900 61000 2000 �.343x��2164. <br /> 3/30/01 2160 830 52900 0 <br /> 6/27101 2249 592 54300 0 1000 2000 3000 4000 5000 6000 <br /> 9/19101 2333 360 59400 <br /> 12/14101 2419 303 49000 DAYS <br /> 2/8/02 2475 169 39500 <br /> 6/18/02 2605 534 31500 --O—PRE-PUMPING BENZENE —4—POST PUMPING BENZENE <br /> 9/17/02 2696 328 25400 <br /> 6/25/03 2977 567 16400 ND<5 ND<5 <br /> 6/16/06 4064 1100 24000 4 4.9 <br /> 9111/06 4151 390 11000 ND<2.5 ND<2.5 <br /> 12/8/06 4239 540 14000 ND<0.5 ND<0,5 <br /> 3/14/07 4335 350 11000 ND<0.5 1.4 —————— <br /> 6/26/07 4439 1000 20000 ND<5 ND<5 <br /> 9/17/07 4522 1000 21000 ND<5 ND<5 MW-2R TPHg TREND <br /> 12/11/07 4607 150 9200 ND<2.5 ND<2.5 <br /> 3/24/08 4711 93 14000 ND<1 ND<1 100000 <br /> 6/17/08 4796 73 12000 ND<2.5 ND<2.5 80000 —y=21:68xt 1053 <br /> CL 60000 <br /> 9126/08 4397 90 5800 ND<1 ND<1 a- <br /> 12/18/08 4980 110 5600 ND<1 ND<1 40000 <br /> _ <br /> 3/9/10 5426 300 3500 ND<1 ND<1 20000 Y=-0.134x,+4228. <br /> 3/23/12 6171 44 3400 ND<1 ND<1 0 <br /> 0 1000 2000 3000 4000 5000 6000 <br /> DAYS <br /> —.A—PRE-PUMPING TPHg POST PUMPING TPHg <br /> 'NON-DETECTABLE CONCENTRATIONS OF MTBE BEFORE AND AFTER PUMPING,NO GRAPH <br /> *NON-DETECTABLE CONCENTRATIONS OF 1,2-DCA BEFORE AND AFTER PUMPING,NO GRAPH <br /> 35 of 82 <br />