Laserfiche WebLink
Fuller Mobile Home Park <br /> 36S 1~ Louise Ave.,Lathrop, California February 23, 1995 <br /> . Phase HSite Characterization - Continued Page. 4 <br /> Iof Custody records were maintained at all times (Appendix B) <br />' 3.4 Soil Sampling <br /> All soil sampling equipment was thoroughly steam-cleaned before and between <br /> sampling to prevent cross contamination Relatively undisturbed soil samples were <br /> taken at intervals of not more than 5 feet in order to evaluate the subsurface <br /> materials, however, this sampling interval may be waived in saturated sands in <br />' which sample recovery is not possible <br /> The soil samples were taken using a California Modified Split Spoon sampler with <br /> brass liners driven continuously by a wire line hammer <br /> The laboratory samples did not have head space and were immediately sealed in <br /> Itheir liners using aluminum foil-lined plastic caps The remaining samples were <br /> removed from their liners to be used as an aide to the on-site geologist in logging <br /> the material at that depth <br /> Soil samples collected for analysis were analyzed using EPA method 8015 <br /> modified for total petroleum hydrocarbons in the gasoline range, EPA method <br /> 3510/LUFT for diesel range petroleum hydrocarbons and EPA method 8020 for <br /> BTX&E compounds The minimum detection limits used for each analyte were <br /> 0 005 mg/kg for BTX&E, 2 5 mg/Kg for gasoline and 5 0 mg/kg for diesel <br /> Analyses were conducted by GeoAnalytical, Inc , of Modesto, California, a State- <br /> certified laboratory <br /> 3.5 Groundwater Sampling <br /> A travel blank provided by the laboratory accompanied the sample vials from the <br /> time they were picked up from the lab to the time they were delivered to the lab <br /> This travel blank was listed on the Chain of Custody but was analyzed only if all <br /> samples contained the same contaminants <br /> All sampling equipment, including the pump, bailer and cables used by sampling <br /> personnel was disassembled, if appropriate, and steam-cleaned prior to <br /> commencement of sampling These procedures were also followed between each <br /> weII and sampling point, and at the end of the sampling day De-ionized or <br /> organic-free water (also provided by the laboratory) was then introduced into the <br /> pump or bailer as a final stage of cleaning This water was then pumped or gently <br /> poured into sample vials to be used as pump or bailer blanks These blanks were <br />