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Date Sampled Sample ID Notes pH <br />TRPH <br />(mg/L) <br />HEM <br />w/SGT <br />(mg/L) <br />TPHg <br />(µg/L) <br />TPHd <br />(µg/L) <br />TPHo <br />(µg/L) <br />Benzene <br />(µg/L) <br />Toluene <br />(µg/L) <br />Ethyl- <br />benzene <br />(µg/L) <br />Total <br />Xylenes <br />(µg/L) <br />MtBE <br />(µg/L) <br />DIPE <br />(µg/L) <br />ETBE <br />(µg/L) <br />TAME <br />(µg/L) <br />TBA <br />(µg/L) <br />Table 11 <br />Dual Phase Extraction System - Groundwater Analytical Data <br />Parcel 2A - L&M OU <br />666 West Weber Avenue, Stockton, CA <br />1/19/2012 GW-INF -- -- --55 710 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />1/19/2012 MID-1 -- -- -- <50 53 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />1/19/2012 MID-2 -- -- -- <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />1/19/2012 MID-3 ------<50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />1/19/2012 MID-4 -- -- -- <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />1/19/2012 GW-EFF -- -- <1.0 <50 <50 <100 <0.10 <0.10 <0.10 <0.10 <5.0 <0.50 <0.50 <0.50 <12 <br />2/28/2012 GW-INF 18 -- -- --240 540 240 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />2/28/2012 MID-1 18, 29 -- -- --230 100 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />2/28/2012 MID-2 -- -- -- <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />2/28/2012 MID-3 ------<50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />2/28/2012 MID-4 -- -- -- <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />2/28/2012 GW-EFF 29 -- -- <1.0 <50 61 <100 <0.10 <0.10 <0.10 <0.10 <5.0 <0.50 <0.50 <0.50 <12 <br />3/16/2012 GW-INF 18 -- -- -- <50 520 250 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />3/16/2012 MID-1 18, 29 -- -- -- <50 870 620 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />3/16/2012 MID-2 -- -- -- <50 76 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />3/16/2012 MID-3 ------<50 53 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />3/16/2012 MID-4 -- -- -- <50 70 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br />3/16/2012 GW-EFF 29 -- -- <1.0 <50 52 <100 <0.10 <0.10 <0.10 <0.10 <5.0 <0.50 <0.50 <0.50 <12 <br />POTW Discharge Limits: 5.0-10.0 100 100 -- -- -- <5.0 <12 <br />Definitions: <br />DIPE = Diisopropyl ether -- = Not analyzed or not applicable <br />ETBE = Ethyl tertiary-butyl ether < = Value is less than laboratory reporting limit <br />lbs = Pounds pH = Concentration of hydrogen ions <br />ATC = Authority To Construct TAME = Tertiary-amyl methyl ether <br />BTEX = Benzene, Toluene, ethyl-Benzene, and Total Xylenes TBA = Tertiary-butyl alcohol <br />PAH = Polynuclear Aromatic Hydrocarbons TPHd = Total petroleum hydrocarbons as diesel (diesel range organics) <br />GAC = Granular Activated Carbon TPHg = Total petroleum hydrocarbons as gasoline (gasoline range organics) <br />µg/L = Micrograms per liter TPHo = Total petroeum hydrocarbons as motor oil (motor oil range organics) <br />mg/L = Milligrams per liter TRPH = Total recoverable petroleum hydrocarbons <br />MtBE = Methyl tert-butyl ether HEM w/SGT = Hexane extractable material with silica gel treatment <br />POTW = Publically Owned Treatment Works <br />Notes: <br />1 <br />2 = Source test for air board. System shut down following source test due to on-site excavation activities. <br />3 = Wastewater not discharge to sanitary sewer, stored in onsite holding tank. <br />4 = Repeat analysis for TPHg yielded inconsistent results, the highest value detected is reported as an estimate. <br />System shut down following source test. <br />= System permitted under ATC No. N-4878-1-1. Source test for air board. Extracted groundwater being held in onsite holding tank. <br />500 Benzene/4,570 Total BTEX <br />I:\Tidewater\TW Stockton (P2A)\Engineering\O&M\Tables\O&M Tables 2012\Parcel 2A OM Tables 1Q12.xlsx Page 17 of 18