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August 18, 2011 <br />Cardno ERI 278913.Q112 Former Mobil Service Station 99CAS, Stockton, California <br />ACRONYM LIST <br />pg/L <br />Micrograms per liter <br />Ns <br />Microsiemens <br />1,2 -DCA <br />1,2-dichloroethane <br />acfm <br />Actual cubic feet per minute <br />AS <br />Air sparge <br />bgs <br />Below ground surface <br />BTEX <br />Benzene, toluene, ethylbenzene, and total xylenes <br />CEQA <br />California Environmental Quality Act <br />cfm <br />Cubic feet per minute <br />COC <br />Chain of Custody <br />CPT <br />Cone Penetration (Penetrometer) Test <br />DIPE <br />Di -isopropyl ether <br />DO <br />Dissolved oxygen <br />DOT <br />Department of Transportation <br />DPE <br />Dual-phase extraction <br />DTW <br />Depth to water <br />EDB <br />1,2-dibromoethane <br />EPA <br />Environmental Protection Agency <br />ESL <br />Environmental screening level <br />ETBE <br />Ethyl tertiary butyl ether <br />FID <br />Flame -ionization detector <br />fpm <br />Feet per minute <br />GAC <br />Granular activated carbon <br />gpd <br />Gallons per day <br />gpm <br />Gallons per minute <br />GWPTS <br />Groundwater pump and treat system <br />HVOC <br />Halogenated volatile organic compound <br />J <br />Estimated value between MDL and PQL (RL) <br />LEL <br />Lower explosive limit <br />LPC <br />Liquid -phase carbon <br />LRP <br />Liquid -ring pump <br />LUFT <br />Leaking underground fuel tank <br />LUST <br />Leaking underground storage tank <br />MCL <br />Maximum contaminant level <br />MDL <br />Method detection limit <br />mg/kg <br />Milligrams per kilogram <br />mg/L <br />Milligrams per liter <br />mg/m3 <br />Milligrams per cubic meter <br />MPE <br />Multi -phase extraction <br />MRL <br />Method reporting limit <br />msl <br />Mean sea level <br />MTBE <br />Methyl tertiary butyl ether <br />MTCA <br />Model Toxics Control Act <br />NAI <br />Natural attenuation indicators <br />NAPL <br />Non -aqueous phase liquid <br />NEPA <br />National Environmental Policy Act <br />NGVD <br />National Geodetic Vertical Datum <br />NPDES <br />National Pollutant Discharge Elimination System <br />O&M <br />Operations and Maintenance <br />ORP <br />Oxidation-reduction potential <br />OSHA <br />Occupational Safety and Health Administration <br />OVA <br />Organic vapor analyzer <br />P&ID <br />Process & Instrumentation Diagram <br />PAH <br />Polycyclic aromatic hydrocarbon <br />PCB <br />Polychlorinated biphenyl <br />PCE <br />Tetrachloroethene or perch loroethylene <br />PID <br />Photo -ionization detector <br />PLC <br />Programmable logic control <br />POTW <br />Publicly owned treatment works <br />ppmv <br />Parts per million by volume <br />PQL <br />Practical quantitation limit <br />psi <br />Pounds per square inch <br />PVC <br />Polyvinyl chloride <br />QA/QC <br />Quality assurance/quality control <br />RBSL <br />Risk-based screening levels <br />RCRA <br />Resource Conservation and Recovery Act <br />RL <br />Reporting limit <br />scfm <br />Standard cubic feet per minute <br />SSTL <br />Site-specific target level <br />STLC <br />Soluble threshold limit concentration <br />SVE <br />Soil vapor extraction <br />SVOC <br />Semivolatile organic compound <br />TAME <br />Tertiary amyl methyl ether <br />TBA <br />Tertiary butyl alcohol <br />TCE <br />Trichloroethene <br />TOC <br />Top of well casing elevation; datum is msl <br />TOG <br />Total oil and grease <br />TPHd <br />Total petroleum hydrocarbons as diesel <br />TPHg <br />Total petroleum hydrocarbons as gasoline <br />TPHmo <br />Total petroleum hydrocarbons as motor oil <br />TPHs <br />Total petroleum hydrocarbons as stoddard solvent <br />TRPH <br />Total recoverable petroleum hydrocarbons <br />UCL <br />Upper confidence level <br />USCS <br />Unified Soil Classification System <br />USGS <br />United States Geologic Survey <br />UST <br />Underground storage tank <br />VCP <br />Voluntary Cleanup Program <br />VOC <br />Volatile organic compound <br />VPC <br />Vapor -phase carbon <br />