Laserfiche WebLink
EnviroTech Consultants, Inc. Page 2 <br /> Site Investigation: Sampling Report <br /> Louise Avenue Water Treatment Facility <br /> Constituent Limits for"Subtitle D" Lined Cell Disposal. After approval from the Potrero Hills Landfill, the roll- <br /> off bins were taken to the landfill for proper disposal. <br /> EnviroTech collected confirmation samples in six locations of the excavated area. Each confirmation <br /> sample was analyzed for arsenic and vanadium by EPA Method 6010-B.All six of the confirmation samples <br /> contained arsenic concentrations below the SFBRWQCB ESL threshold of 10 mg/kg and the EPA dermal <br /> screening level of 17 mg/kg. Vanadium concentrations detected in all of the samples did not exceed the <br /> SFBRWQCB ESL of 2,400 mg/kg. There is no EPA Dermal Screening Level for vanadium. <br /> EnviroTech recommends mitigation measures to prevent exposure from dust be used, such as placing <br /> clean fill on top of the soils of concern or flagging areas to avoid during high winds that are above the 10 <br /> mg/kg SFBRWQCB ESL limit. Knowledge of affected soils and education to prevent exposure is suggested <br /> for all employees working on the site. In Area 3, EnviroTech recommends that the excavated area be <br /> backfilled with clean soil and graded as needed. EnviroTech recommends disposing of the rinsate at the <br /> Veolia Water North America Facility. <br /> 5400 Rosedale Highway 0 Bakersfield, CA 93308 Tel 661.377.0073 Fax 661.377.0074 <br />