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i GeoSyntec Consultants Table 4 Geochemical Parameters Data Summary HRC Pilot Scale Field Demonstration j Western Farm Service, Inc. -Vernalis, California MW-2 MW-5(**) Analyte Units Method DOWNGRADIENT OFFSITE VOCs 6/3/2002* 8/8/2002 (1/14/2002 2/4/2003 5/21/2003 8/21/2003 1 12/4/2003 3/31/2004 5/27/2004 8/31/2004 11/23/2004 6/3/2002* 8/21/2003 8/31/2004 1,2-Dichloropropane µg/L EPA 8260B 252 234 370 363 286 404 138 162 156 164 86 ND<1 0 ND<1 0 314 1,2,3-Tnchloropropane µg/L EPA 8260B 32 3 1 91 73 57 79 29 45 ND< 10 ND< 0 0 ND< 10 ND<l 0 ND<1 0 ND< 10 2-Chloropropane vg/]L EPA 82608 ND 1-Chloropropane gg/L EPA 8260B ND<1 0 ND<l 0 ND<1 0 ND<1 0 100 ND<l 0 20 39 ND< 1 0 ND< 1 0 ND< 10 ND<1 0 ND<1 0 ND< 10 Permanent Gases Ethylene mg/L ASTM D1945 ND<0 003 ND<0 008 ND<0 007 ND<0 010 ND<0 010 ND<0 007 ND<0 010 ND<0 004 ND<0 008 ND<0 010 ND<0 010 ND<0 006 ND<0 008 ND<0 010 Ethane mg/L ASTM D1945 ND<0 003 ND<0 008 ND<0 007 ND<0 010 ND<0 010 ND<0 007 ND<0 010 ND<0 004 ND<0 008 ND<0 010 ND<0 010 ND<0 006 ND<0 008 ND<0 010 ' Methane mg/L ASTM D 1945 0 003 0 020 297 414 889 8 66 43 3 5 4 0 021 767 693 0 006 0 062 0 019 Carbon Dioxide mg/L ASTM D1945 160 698 514 327 ND<0 015 299 203 374 609 572 Propene mg/L ASTM D i 945 ND<0 003 ND<0 008 0 007 ND<0 010 ND<0 010 ND<0 007 ND<0010 ND<0 004 ND<0 008 ND<0 010 ND<0 010 ND<0 006 ND<0 008 ND<0 010 Metabolic Acids Acetic mg/L HPLC/UV ND<l 0 ND<20 0 8 3 449 420 179 ND< 10 18 ND< 10 ND< 1 0 ND< 10 ND<l 0 ND<1 0 ND<l 0 Butyric mg/L HPLC/UV ND<l 0 ND<10 0 ND<IO 0 --- 41 7 ND<1 0 ND<1 0 ND< 10 ND< l 0 1 ND< 1 0 ND< 10 ND< 10 ND<l 0 ND<l 0 ND<l 0 ' Lactic mg/L HPLC/UV ND<1 0 ND c20 0 ND<10 0 ND<1 0 ND<1 0 ND<l 0 ND< 10 ND< 10 ND< 10 ND< 10 ND< 10 ND<l 0 ND<20 0 ND<1 0 Propionic mg/I. HPLC/UV ND<1 0 ND<10 0 158 939 493 ND<l 0 ND< l 0 ND< 10 ND Pyruvic mg/L HPLC/LTV ND<0 1 ND<2 0 ND<2 0 ND<0 5 ND<0 5 ND<0 5 ND<0 1 ND<0 i ND<0 t ND<0 1 ND<0 1 ND<0 1 ND<2 0 ND<0 1 General Chemistry Carbonate,as CaCO3 mg/L SM 2320 B ND<10 1 ND<10 ND<1 ND<10 ND<10 ND<10 ND< 10 ND< 10 ND< 10 ND< 10 ND<10 ND<10 ND< 10 Hydroxide Alkalinity mg/L SM 2320 B ND<10 ND<10 ND<10 ND<10 ND<10 ND< 10 ND< 10 -- ND<10 ND< 10 G ND<10 ND<10 ND< 10 ' Bicarbonate,as CaCO3 mg/L SM 2320 B 500 787 -- 1,620 1,690 1,7701,180 1,010 1,030 797 675 262 530 319 BOD(5 day) mg/L SM 5210B ND<4 129 49 292 146 -- -- -_ -- _ -- ND<4 -- -- Nitrogen,Ammonia mg/L SM 4500 B,E 191 304 374 144 413 370 209 168 182 84 73 8 4 2 16 l 46 ' Sulfide,total mg/L EPA 376 2 ND<0 10 ND<0 10 ND<0 50 ND<0 50 ND<0 10 ND<0 10 ND<0 10 ND<0 10 ND<0 10 ND<a 10 ND<0 10 'oil ND<0 10 ND<0 10 Alkalinity,as CaCO3 mg/L SM 2320 B 500 787 1,320 1,620 1,690 1,770 1,180 1,010 1,030 797 675 262 530 319 H pH EPA 9040 76 73 73 69 71 69 68 74 70 66 -- 74 74 71 ' Chloride mglL EPA 9056 101 73 7 528 115 83 4 126 136 142 166 203 132 315 311 252 Nitrogen,Nitrate+Nitrite mg/L EPA 9056 315 666 438 5 2 91 34 3 0 ND<0 2 ND<0 2 ND<0 2 03 119 27-9 -197 Sulfate mg/L EPA 9056 104 f90194 152 403 494 879 75 0 109 0 112 103 85 147 209 167 Dissolved Metals Dissolved Arsenic mg/L EPA 7060A 0 063 5 0 109 0 064 0 075 0 052 0 061 0 052 0 056 0 034 0 032 1 ND<0 005 ND<0 005 ND<0 005 Dissolved Chromium mg/L EPA 6010B ND<0 005 0 006 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 0 011 0 008 0 006 ' Dissolved Copper mg/L EPA 6010B ND<0 005 0 013 0 009 ND<0 005 0 016 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 0 005 ND<0 005 Dissolved Iron mg/L EPA 200 7 ND<0 030 0 1 l8 0 261 0 942 108 107 ND<0 030 2 22 0 261 682 5 57 ND<0 030 0 181 ND<0 030 Dissolved Manganese mg/L EPA 200 7 0 037 0 572 0 320 3 87 432 6 06 194 344 226 469 415 ND<0 010 0 051 ND<0 010 Dissolved Mercurymg/L EPA 7470A ND<0 0005 ND<0 0005 000126 ND<0 0005 ND<0 0005 ND<0 0005 ND<0 0005 ND<0 0005 ND<0 00050 ND<0 00050 ND<0 00050 'ND<0 00050 ND<0 0005 ND<0 00050 ' Dissolved Nickel mg/L EPA 6010B 0 009 0 016 0 023 0 024 0 032 0 025 0 014 0 015 0 013 0 010 (;006 ND<0 005 0 009 ND<0 005 Dissolved Zinc mg/L EPA 6010B 0 011 0 288 0 417 0 426 0 327 0 431 0 229 0 375 0 357 0048 0 149 0 022 0 387 0 282 Total Metals Iron mg/L EPA 200 7 322 7 77 234 276 18 8 138 3 61 10 2 11 5 L 755 1103 419 774 375 Manganese mg/L EPA 200 7 0 141 a 603 0 767 644 2 06 2 1 1 74 344 2 b9 g±ff4 112 1 68 0890 Phosphorous mg/L EPA 200 7 71 5 126 106 397 525 603 196 -- 20 0 ND<l 0 1 7 ND< 1 0 --"means not analyzed * Pre-infection sample results ** Wells monitored on an annual basis P TPJ2003REM\W FSIV ERIMONF14Q04bako407a xis I t