Laserfiche WebLink
TABLE 3 <br /> SUMMARY OF GROUNDWATER ANALYTICAL RESULTS (TPHd and BTEX)1,2,3 <br /> MOUNTAIN HOUSE DEVELOPMENT SITE#6 <br /> Mountain House, San Joaquin County,California <br /> Concentrations inµg/L <br /> Abbreviations: <br /> BTEX=Benzene,toluene,ethylbenzene,and total xylenes <br /> D=Duplicate sample <br /> E=Estimated value based on surrogate recovery levels <br /> EPA=U.S.Environmental Protection Agency <br /> ESL=Environmental Screening Level <br /> ggw =Grab groundwater <br /> HP=Hydropunch Sample <br /> ID=Identification <br /> NA=Not Analyzed <br /> RWQCB=Regional Water Quality Control Board <br /> SAIC=Science Applications International Corporation <br /> SWRCB=State Water Resources Control Board <br /> TPHd=Total petroleum hydrocarbons quantified as diesel,C1O-C25 <br /> TPHdsg=Total petroleum hydrocarbons quantified as diesel with silica-gel cleanup. <br /> W=Wellhead tap <br /> WQO=Water Quality Objective <br /> <=Denotes analyte not detected at or above the laboratory reporting limit <br /> gg/L=Micrograms per liter <br /> Notes: <br /> 1. Samples were collected by SAIC and analyzed by Lancaster Laboratories,Inc. TPHd were analyzed using EPA Method 8015 <br /> Modified performed both with and without a silica gel-preparation procedure. BTEX were analyzed using EPA Method 8260B. <br /> 2. Results in bold exceed WQOs and/or ESLs. <br /> 3. See Appendix E.1 for data usability summary. <br /> 4. WQO(Tastes and Odors)that prohibits adverse tastes and odors or nuisance conditions. <br /> 5. WQO(Toxicity)that prohibits toxic chemicals in toxic amounts. <br /> 6. ESL(for protection or current or potential drinking water resource)based on Ceiling Value. <br /> 7. ESL(for protection or current or potential drinking water resource)based on Drinking Water Toxicity. <br /> Sources: <br /> WQOs defined in the Central Valley RWQCB Water Quality Control Plan(Basin Plan),for the Sacramento River Basin and <br /> San Joaquin River Basin (Fourth Edition),October 2007. WQOs may be stated in either numerical or narrative form. <br /> Narrative water quality objectives are interpreted by values from SWRCB A Compilation of Water Quality Goals, July 2008. <br /> ESLs from the San Francisco Bay RWQCB Screening for Environmental Concerns at Sites with Contaminated Soil and <br /> Groundwater (Interim Final),May 2008. <br /> Page 2 of 2 From Science to so)Vrlons <br />