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California Regional Water Qual�ty Cont rwABoard <br /> o <br /> Central Valley Region <br /> Robert Schneider Chair <br /> Winston H.Hickox — n3 OCT 2 2 PH 12. 12 Gray Davis <br /> Secretaryfor Sacramento Main Office Governor <br /> Environmental Intemet Address: http://www.swrcb.ca.gov/rwgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> October 20, 2003 <br /> Former Busy Bee Cleaners <br /> c/o Mr. Joseph Salazar, Jr., Attorney at Law <br /> Mayall, Hurley, Knutsen, Smith and Green <br /> 2453 Grand Canal Blvd., Second Floor <br /> Stockton, CA 95207-8253 <br /> PHASE 3 GROUNDWATER CHARACTERIZATION WORKPLAN; FORMER BUSY BEE <br /> CLEANERS,SAN JOA QUIN COUNTY <br /> The California Central Valley Regional Water Quality Control Board(Regional Board)has reviewed <br /> your submittal entitled"Phase 3 Groundwater Characterization Workplan" (Phase 3 work plan) dated <br /> September 17, 2003 and prepared by E2C Remediation. Regional Board staff comments on the <br /> document are provided below. <br /> Background <br /> Busy Bee has completed its Phase 1 site characterization work and installed several groundwater <br /> monitoring wells as outlined in Busy Bee's Phase 2 Site Characterization Work Plan. Busy Bee has <br /> submitted an RDFS Work Plan that is currently undergoing revision in accordance with Regional Board <br /> comments on that work plan. In order to expedite investigation activities at the site, Busy Bee proposes <br /> to perform additional groundwater characterization activities pursuant to a separate work plan, the Phase <br /> 3 work plan. <br /> The Phase 3 work plan proposes the installation of eleven shallow groundwater-monitoring wells,three <br /> deep groundwater-monitoring wells and one aquifer test well. Soil samples are to be collected from the <br /> borings at 5-foot intervals with at least three samples from each boring(selected based on field screening <br /> measurements)proposed for laboratory analysis. One to two soil gas samples are to be collected from <br /> the 30 to 50 foot below ground surface depth in the perimeter shallow groundwater monitoring well <br /> borings. Four soil gas samples will be collected from each of the shallow groundwater monitoring well <br /> borings interior to the groundwater plume. <br /> Comments on the Work Plan <br /> In order to expedite the implementation of the proposed work, Regional Board staff discussed our <br /> preliminary comments, and those provided by Magellan Environmental on behalf of the City(letter <br /> dated October 9, 2003),with E2C Remediation by phone on October 10 and October 15, 2003. Based on <br /> that conversation, the Regional Board concurs with the Phase 3 Work Plan subject to the following <br /> agreed-to changes: <br /> California Environmental Protection Agency <br /> Qa Recycled Paper <br />