Laserfiche WebLink
TABLE 3 <br /> SUMMARY OF GROUNDWATER ANALYTICAL RESULTS(TPHd and BTEX) 1'2'3 <br /> US CAN-WELTY ROAD <br /> Vernalis,San Joaquin County,California <br /> Concentrations inµg2 <br /> Boring/Well Collection Date Ethyl- <br /> ID Type I Sampled TPHd TPHdsg Benzene Toluene benzene Total Xylenes <br /> SCREENING WQO 100 4 100 4 0.15 5 42 4 29 4 17 4 <br /> LEVELS ESL 100 6 100 6 1 7 40 6 30 6 20 6 <br /> SB-18-W ggw 8/11/2008 1,200 160 <0.1 <1.0 <1.0 <1.0 <br /> SB-19-W ggw 8/12/2008 260 <50 <0.1 <1.0 <1.0 <1.0 <br /> SB-22-W ggw 8/13/2008 1,000 E 1,100 E <0.1 <1.0 <1.0 <1.0 <br /> SB-22-WD ggw 8/13/2008 570 E 200 E <0.1 <1.0 <1.0 <1.0 <br /> SB-23-W ggw 8/14/2008 130,000 59,000 <0.1 <1.0 <1.0 <1.0 <br /> SB-24B-W ggw 8/14/2008 6,100 E 3,300 <0.1 <1.0 <1.0 <1.0 <br /> SB-25-W ggw 8/18/2008 630 E 91 <0.1 <1.0 <1.0 1.2 <br /> SB-26-W DD;82 8/15/2008 60 E <50 E <0.1 <1.0 <1.0 <1.0 <br /> SB-27-W ggw 8/18/2008 <50 NA <0.1 <1.0 <1.0 <1.0 <br /> SB-29-W ggw 11/20/2008 74,000 58,000 <0.1 <1.0 <1.0 <1.0 <br /> SB-30-W ggw 11/21/2008 <50 NA <0.1 <1.0 <1.0 <1.0 <br /> SB-32-W ggw 11/21/2008 53 <50 <0.1 <1.0 <1.0 <1.0 <br /> SB-33-W ggw 11/21/2008 <50 NA <0.1 <1.0 <1.0 <1.0 <br /> SB-35-W ggw 11/24/2008 <50 NA <0.1 <1.0 <1.0 <1.0 <br /> SB-36-W ggw 11/24/2008 <50 NA <0.1 <1.0 <1.0 <1.0 <br /> SB-37-W ggw 11/20/2008 57 E <50 <0.1 <1.0 <1.0 <1.0 <br /> SB-37-WD ggw 11/20/2008 <50 E NA <0.1 <1.0 <1.0 <1.0 <br /> SB-42-W ggw 3/5/2009 110 <50 <0.1 <1.0 <1.0 <1.0 <br /> SB-42-WD ggw 3/5/2009 120 <50 <0.1 <1.0 <1.0 <1.0 <br /> Abbreviations: <br /> BTEX=Benzene,toluene,ethylbenzene,and total xylenes <br /> D=Duplicate sample <br /> DD=Depth discrete;feet below ground surface <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 /> ID=Identification <br /> J=Estimated concentration detected between MDL and LOQ <br /> MCL=Maximum Contaminant Level <br /> NA=Not analyzed <br /> RWQCB=Regional Water Quality Control Board <br /> SAIC=Science Application International Corporation <br /> TDS=Total Dissolved Solids <br /> TPHd=Total petroleum hydrocarbons quantified as diesel,QO-C25 <br /> TPHdsg=Total petroleum hydrocarbons quantified as diesel with silica-gel cleanup. <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 from the Central Valley Region RWQCB Water Quality Control Plan(Basin Plan)for the Sacramento River Basin and the <br /> San Joaquin River Basin,4th ed.(Revised October 2007). <br /> ESLs from the San Francisco Bay RWQCB Screening for Environmental Concerns at Sites with Contaminated Soil and Groundwater <br /> (Interim Final May 2008). <br /> MMOFr1 <br /> IC <br /> Fmm Science to Solutions <br /> Page 1 of 1 <br />