Reso13 PC 13-09 2859 Initial Study Mitigated Negative Declaration Kensington

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� � • � � I geophysical survey was conducted and identified a subsurface stream channel which facilitated the transport of the contamination. A numerical model of the site was constructed to allow superimposition of various remedial alternatives. • ESA SEQUA; El Cajon, California-Project manager on remediation program that was designed and implemented by PSI with approval from client and the regulatory agencies. Pentochlorophenol and metal contaminated soil was excavated and segregated with the use of a mobile laboratory into non-hazardous, hazardous, and extremely hazardous stockpiles for transport to the appropriate disposal facilities. The property transfer was completed as scheduled and the site is now operational. • Parker Hannifm; Irvine, California-Project manager for a remedial design and implementation at Parker Hannifin facility. Carbon absorption, air stripping, and Ultra�iolet (UV)/Ozone treatments were identified as effective treatment technologies with UV/Ozone as preferred technology based on regulatory acceptance and operational costs. Bench scale tests and a pilot study of two vendors of the technology were conducted to determine the effectiveness of the respective treatment systems. NPDES, air quality, and local permits as well as a remedial action plan were prepared, submitted, and approved to allow implementation of the remediation program. PSPs field services group constructed a subsurface conveyance system, installed pumps in wells, and constructed the treatment site. The final remediation system included UV/Ozone with the discharge polished by activated carbon. To minimize operational costs, implement cost recovery actions, as well as for public relations, options for utilizing the discharge water were developed. These options included irrigation water and supply water for on-site metal plating facility in addition to discharge to local storm drain. • State of California Department of Transportation; Oakland, California-Project manager for remedial design program for CalTrans for the removal of inetal contaminated soil associated with four overpasses in Oakland, California. The remedial design program included establishing limits of contamination, possible remedial alternatives, and possible landfill sites. Years experience with other firms: 9 Year started with PSI: 1993 File Name: PossF.doc Revised:8/06