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Parcel 2A - L&M OU <br />666 West Weber Avenue, Stockton, CA <br />(In order to show best estimate, recovery calculations assume one-half of the detection limit when the compound is reported as less than the detection limit.) <br />Date <br />Sampled <br />Sample <br />ID Notes <br />Hour <br />Meter <br />Reading <br />(hours) <br />TPHg <br />(ppmv) <br />TPHd <br />(ppmv) <br />Benzene <br />(ppmv) <br />MtBE <br />(ppmv) <br />Recovery <br />Rate <br />(lbs/day) <br />[1] <br />Period Net <br />Recovery <br />(lbs) [2] <br />Cumulative <br />Recovery <br />(lbs) [3] <br />Recovery <br />Rate <br />(lbs/day) <br />[1] <br />Period Net <br />Recovery <br />(lbs) [2] <br />Cumulative <br />Recovery <br />(lbs) [3] <br />Recovery <br />Rate <br />(lbs/day) <br />[1] <br />Period Net <br />Recovery <br />(lbs) [2] <br />Cumulative <br />Recovery <br />(lbs) [3] <br />Recovery <br />Rate <br />(lbs/day) <br />[1] <br />Period Net <br />Recovery <br />(lbs) [2] <br />Cumulative <br />Recovery <br />(lbs) [3] <br />Table 14 <br />MtBE RecoveryInfluent Concentrations TPHg Recovery <br />Dual Phase Extraction System - Soil Vapor Influent Analytical Data and Mass Recovery <br />Well <br />Field <br />Flow <br />Rate <br />(scfm) <br />Benzene RecoveryTPHd Recovery <br />Notes: <br />a = System permitted under ATC number N-4878-1-1. Source test for air board. Extracted groundwater being held in onsite holding tank. System shut down following source test. <br />b = System started for 24-hour collection of vapor PAH samples. <br />c <br />d = ATC Number N-4878-1-2 issued 7/20/2004. System restarted. <br />e = Source test for air board. System shut down following source test due to on-site excavation activities. <br />f = System shut down following completion of vapor PAH sample collection. <br />g = System shut down since 6/3/2005 no discharge and no sampling activities. <br />h = System sampled following startup. <br />i = System running solely on ASVE-1 through ASVE-6. <br />j <br />k = System not sampled for analytical due to electrical problems with the extraction blower. Removal calculation based on previous months analytical data. <br />l = SV-INF collected one day after O&M readings due to collapse of sample bag collected on 7/30/2007. <br />m = Diesel analyzed by Air Toxics LTD via EPA Method TO-17. <br />n = System shutdown with regulatory approval. TPHd sampled on 10/28/11 <br />Specific Weight: <br />TPHg = 95 g/mol Specific Weight of gasoline = 6.1 pounds per gallon <br />Benzene = 78.1 g/mol Specific Weight of benzene = 7.4 pounds per gallon <br />MtBE = 88.2 g/mol Specific Weight of MtBE = 6.18 pounds per gallon <br />Specific Weight of diesel = 7.18 pounds per gallon <br />Air Toxics Molecular Weights: <br />TPHd = 233 g/mol <br />Equations: <br />----------------------------------------------------------------------X [Molecular Weight (g/mole)] X [1 lbs/453.59 g] X [1.2641 moles/1 cf] X [Average of consecutive Flow Rates (scfm)] X [60 min/hr] X [24 hr/day] = XX.XXX lbs/day <br />[1,000,000 parts] <br />[Average of consecutive concentrations (ppmv)] <br />= System shut down following vapor PAH sampling. PAH results outside of ATC limits (no detectable PAHs in influent vapor stream); alternate ATC needed to operate. <br />Recovery Calculations = <br />= System air flow rate and temperature based on historical averages due to inadvertent omission from field notes. <br />Kiff Analytical Molecular Weights: <br />I:\Tidewater\TW Stockton (P2A)\Engineering\O&M\Tables\O&M Tables 2012\Parcel 2A OM Tables 1Q12.xlsx Page 3 of 3