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' K L E I N F E L D E R ' TABLE 2 u Concentrations ofSelected Constituents in Grountlwa[er Former Spreckels Sugar Plant No.2 18800 South Spreckels Road Manteca,California CarbonateSpaciBc Monitoring Well Sample pH TDS Bicarbonate Alkalinity Chloride Nitrateas N Sulfate Contlucfivily Calcium Sotlium p Date (pH Units) Img/l) Alkalinity lmgn) instill) )mg/I) (mgll) (mglp (umhoslcm) wmg10 Img/I) MW-26 4/29/1999 7.19 1530 423 ND 298 31.2 244 2280 178 138 511212000 ].26 1240 403 ND 231 19.4 200 1900 155 160 7/12/2000 7 46 1240 412 ND 220 20.3 207 1950 150 152 9126/2000 745 1260 456 ND <10 266 26 252 2050 151 149 321/2001 ].41 1320 447 ND c10 262 93.7 263 2150 1B4 175 9/14/2001 7.54 1500 430 ND <10 300 24.84 260 2000 200 190 12/19/2001 7.31 1500 490 ND <10 340 339 310 2400 200 190 3111/2002 ].3B 1500 490 ND c10 300 34 270 2400 210 200 5/1612002 7.28 1500 510 ND <10 260 37 260 2300 190 180 11/13202 0 7.19 1500 520 ND <1 320 36 260 2300 190 170 512/2003 7.12 1300 520 ND 00 230 30 220 2100 1]0 160 10182003 7.13 1400 550 ND <iD 240 30 230 2200 180 160 ' 61142004 7.14 1400 600 ND <ID 300 30 220 2 16 500 200 0 11/812004 7.02 1300 680 ND<5.0 190 28 180 2000 190 150 6/2912005 7.28 1300 650 NO<50 160 21 150 1900 190 140 12/212005 7.13 200 150 1400 760 ND<5.0 190 22 160 2000 527/2006 7.15 1300 720 ND <5.0 160 17 150 2100 170 120 111720% 7.02 1300 790 ND <50 160 18 730 2200 192 144 51212007 7.3 1230 682 ND <5.0 130 23.9 137 1900 173 105 101182007 7.53 1400 730 ND <5.0 160 20 150 2000 190 130 MW-26 412911999 7.09 1210 939 ND 160 ND 322 2110 129 140 51122000 ].14 1090 694 ND 162 8.56 49.9 2020 120 122 7/1212000 7.21 1040 820 ND 761 it 47.4 1990 111 115 ' 9/262000 7.36 1160 647 ND <10 i]1 12.5 62 2060 109 116 3121/2001 7.21 1090 796 ND <10 166 53.1 776 2040 129 129 9/1412007 7.2 1000 660 ND c10 160 17.16 74 1300 120 120 12/1912001 7.2 1000 730 NO <10 180 19.6 96 2000 120 120 31112002 7.29 1000 690 ND c70 160 20 90 2DW 120 130 15162002 8 000 %0 ND c10 60 21 110 2000 110 120 11/1312002 7.03 1000 630 ND <1D 190 21 100 1900 110 120 52/2003 7.00 1000 600 ND <10 150 23 B9 1900 110 110 10/8/2003 7.00 1000 580 ND c10 150 3.9 iW 1800 180 160 6/1420D4 7.15 950 600 ND <10 160 20 89 1900 100 110 11/82004 7.03 990g ND<50 130 29 120 1700 110 100 61292005 7.14 1000 570 ND<5.0 110 25 110 1600 110 110 12212005 7.12 930 700 ND<5.0 110 24 110 1600 98 100 51222005 706 640 580 ND c 5.0 79 5.6 95 1500 76 BO 1500 11!7/2005 7 740 600 ND <5.0 75 0.61 97 84.4 98.9 521/2007 7.2 981 545 ND c5.0 91.8 21.5 112 1600 95.1 94.7 10/182005 7.54 850 580 ND <5.0 69 4.3 710 1400 BS % MW-27 429/1999 741 634 327 ND ]4.4 15.0 44 1030 106 40.5 5/122ODD 7.57 586 264 ND 101 4.0 69 856 89.7 41.3 7/122000 7,54 627 214 ND 117 4.5 80.9 1000 95 43.7 92612000 7.59 517 254 ND <10 88.2 ].65 555 898 91.8 41.2 3/21/2001 7.58 556 212 ND <10 143 11.30 93 1050 105 52.2 91142001 7.6 520 200 ND <10 150 4.97 110 920 110 58 12/192001 7.57 620 210 ND <10 160 4.7 120 1100 110 56 3/112002 7.64 620 210 ND <10 150 4.8 110 1100 110 51 51162002 7.56 670 220 ND 00 150 6.2 120 1100 100 58 11/132002 7.47 530 260 ND <10 110 5.7 110 890 85 49 5212003 7.36 650 200 ND <10 15D 5.4 100 1 1100 100 58 10/82003 7A 1300 200 ND e10 160 3.9 100 1100 98 58 6/142004 7.53 610 180 ND ryO 200 26 89 1100 94 58 11/82004 7.45 620 190 NDI<5.0) 160 1.7 90 950 98 57 62912005 759 660 200 NV( 50 160 2.6 93 1000 110 58 12/212005 7.55 650 240 NLJI<c0l lc0 I 1000 100 1 51 5222006 7.54 650 210 ND <5.0 130 1.3 90 1000 81 46 /712006 7.39 640 250 ND <5.0 11 160 1.7 92 11011 99.2 568 512120077.6 739 194 ND <5.0 15] 1.2 104 1040 99.2 52.5 101172007 7.98 780 220 ND <5.0 170 2.8 110 1100 iiD 61 Notes: mg/I =milligrams per lids pmhoslcm =mtanalys percentimeter =not represent Hi for this analyte or now applicable =represent Historical nitrate levels which have been converted to nitrate es N for comparison purposes ND =None Detected above the laboratory reporting limit Page 3 of 3 20.3978-03 MWISTOSRI I] Copyright 200010elnfslder February 1,2008