ARCHIVED REPORTS_SITE CONCEPTUAL MODEL 2009

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ameO TABLE 3 MASS REMOVAL RATES FOR NESTLE GROUNDWATER EXTRACTION WELLS Former Nestle Inc. Faclity Ripon, California TCE cDCE Flow Rate TCE cDCE Flow Rate Total Date pg/L pg/L gpm lbs/da pg/L pg/L gpm lbs/da lbs/day 230 Industrial Avenue (Onsite Wells) EW-1 (99 - 119 feet bgs) EI-1 (96 - 116 feet bgs) 2/22/2007 280 10 10.9 0.038 150 2.7 142.5 0.261 0.299 5/10/2007 270 11 10.9 0.037 130 2.6 142.5 0.227 0.263 7/3/2007 270 9.5 10.9 0.037 130 2 142.5 0.226 0.262 11/13/2007 270 10 10.9 0.037 90 1.9 142.5 0.157 0.194 2/1/2008 280 11 7 0.024 89 2.1 88 0.096 0.121 EU-3 (50 - 65 feet bgs) EU-4 (50 -65 feet bgs) 3/12/2008 340 <5 30 0.122 320 <5 29 0.111 0.234 3/18/2008 260 <5 29 0.090 250 <5 29 0.087 0.177 4/22/2008 160 <2 28 0.054 160 <1 31 0.059 0.113 5/8/2008 170 <2 31 0.063 150 <2 29 0.052 0.115 5/19/2008 150 <2 29 0.052 110 <2 31 0.041 0.093 6/10/2008 130 <2 28 0.044 100 <2 29 0.035 0.078 6/18/2008 140 <2 28 0.047 110 <2 29 0.038 0.085 7/15/2008 140 <2 31 0.052 95 <2 31 0.035 0.087 7/22/2008 100 <2 28 0.034 70 <2 28 0.023 0.057 8/19/2008 85 <1 27 0.028 69 <0.5 27 0.022 0.050 8/26/2008 76 <1 29 0.026 55 <0.5 29 0.019 0.046 9/12/2008 100 <1 29 0.035 64 <0.5 30 0.023 0.058 9/26/2008 100 <1 27 0.032 67 <1 29 0.023 0.056 519 Stockton Avenue (Offsite Wells) E-2 (47.8 - 67.5 feet bgs) E-6 (143 - 158 feet bgs) 2/1/2008 8.1 0.97 69 0.008 25 59 208 0.209 0.217 4/22/2008 6 0.74 73 0.006 22 53 287 0.258 0.264 7/22/2008 5.3 0.58 72 0.005 18 46 254 0.195 0.200 Abbreviations TCE -trichloroethene concentration reported in groundwater sample from extraction well cDCE = cis-1,2-dichloroethene concentration in groundwater sample from extraction well gpm = gallons per minute, lbs/day = pounds of TCE and cDCE removed per day Flow and chemical concentration data provided in ECM, 2008b bgs = below ground surface flow rate = extraction well flow rate reported in ECM, 2008b Note Date range in brackets next to well ID denotes the screened interval for each well.