Laserfiche WebLink
1 • 07 December 2004 <br /> AGE-NC Project No 98-0448 <br />' Page 3 of 9 <br /> filling and capping Ground water sample containers were labeled with the well designation, date,' <br /> time, and sampler's Initials <br />' 23 LABORATORY ANALYSIS OF GROUND WATER SAMPLES <br /> Each ground water sample was logged on a chain-of-custody form,placed in a chilled container and <br /> transported to Cal Tech Environmental Laboratory (CTEL), a California Department of Health <br /> Services (DHS)=certified laboratory for analysis for <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) by EPA Method 8015M, <br /> • Benzene,toluene,ethylbenzene and xylene(BTEX)and methyl tert butyl ether(MTBE), 1,2- <br /> Dichloroethane(1,2-DCA),ethylene dibromide(EDB),tertiary butanol(TBA),di-isopropyl <br /> ether(DIPE), ethyl tert butyl ether(ETBE), tert amyl methyl ether(TAME) and MTBE by <br /> EPA Method 8260B <br /> • 3.0. SOIL VAPOR EXTRACTIONAN-SITU AIR SPARGE PROCEDURES <br /> Between 22 June 2004 and 23 September 2004,an SVE remediation system was operated at the site, <br /> utilizing a regenerative vacuum blower to selectively apply an induced vacuum to wells VW-1, <br /> VW-2,VW-5 and VW-6 During this time, IAS remediation was continually operated at the site on <br /> I wells AW-1 through AW-4 (screened 25-30 feet), AW-5 (screened 30-35 feet) and MW-4B <br /> (screened 45-50 feet) utilizing an air compressor to infect air beneath the water table, the injected <br /> air should volatilize dissolved hydrocarbons in ground water,and force hydrocarbon vapors into the <br /> vadose zone, where they can be withdrawn by the above SVE system Operation and design of <br /> SVE and TAS systems for the site were described in Remedial Action Work Plan dated 07 July 2000, <br /> prepared by AGE, and approved by the EHD by letter dated 14 July 2000 <br /> Between 04-05 August 2004, LAS operations were temporarily suspended to replace a faulty motor <br /> on the LAS air compressor, additionally, due to a crack in the IAS air-coinp`ressor tank,operation of <br />' the IAS/SVE remediation system was temporarily suspended between 07-23 September 2004 for <br /> repairs and replacement of the air compressor tank <br /> 3 1 SOIL VAPOR EXTRACTION SYSTEM PROCEDURES <br /> The SVE system utilized a Fuji, 3-horsepower regenerative vacuum blower to volatilize and extract <br /> adsorbed hydrocarbon vapor from the subsurface A manifold network of two-inch diameter, <br /> Advanced GeoEnvironmental,Inc <br /> M < <br />