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California9egional Water Quality Clr�i
<br /> Central Valley Region
<br /> Karl E.Longley,SCD,P.E.,Chair IAN 2 4 7fing
<br /> Linda S.Adams Arnold
<br /> Secretaryfor Sacramento Main Office Schwarzenegger
<br /> Environmental 11020 Sun Center Drive#200,Rancho Cordova,California sE@}161RO N0E..N1 HEALTH Governor
<br /> Protection -Phone(916)464-3291•FAX(916)4644645 PERPA1f l YJHh /ICES
<br /> http://www.waterboards.c&gov/centralvalley
<br /> January 23, 2008
<br /> Stephen G. Muir, C.E.G.
<br /> Consulting Geologist & Geophysicist
<br /> PO Box 152
<br /> Woodbridge, CA 95258
<br /> REVIEW OF SITE CHARACTERIZATION WORK PLAN FOR CONTINUED INVESTIGATION
<br /> AND REMEDIATION FEASIBILITY STUDY FOR CHLORINATED VOLATILE ORGANIC
<br /> COMPOUNDS IN SOIL, LUSTRE CAL NAMEPLATE CORPORATION, 110 EAST TURNER
<br /> ROAD, LODI, SANJOAQUIN COUNTY
<br /> The California Regional Water Quality Control Board, Central Valley Region (Regional Water
<br /> Board) staff has reviewed the October, 2007 submittal of the Site Characterization Work Plan
<br /> Continued Investigation and Remedial Feasibility Study (RFS) for Chlorinated Volatile Organic
<br /> Compounds (VOCs) in Soil, Lustre-Cal Nameplate Corp., 110 East Turner Road, Lodi, San
<br /> Joaquin County(the Site). You prepared the work plan on behalf of the Lustre-Cal Nameplate
<br /> Corp., of Lodi. The Regional Water Board received the document on January 7, 2008.
<br /> Soil and groundwater beneath the property and in the vicinity of the Site have been impacted
<br /> by discharges of chlorinated VOCs including tetrachloroethene (PCE), trichloroethene (TCE),
<br /> 1,1,1-trichloroethane (1,1,1-TCA), 1,1-dichloroethene (1,1-DCE), 1,1-Dichloroethane (1,1-
<br /> DCA), 1,2-dichloroethane (1,2-DCA), cis-1,2-dichloroethene (cis-1,2-DCE), and trans-1,2
<br /> dichloroethene (trans-1,2-DCE). Soil, soil gas, groundwater, and sewer effluent sampling data
<br /> confirming the presence of chlorinated VOCs have been collected in numerous investigations
<br /> between 1989 and 2006. The results indicate that some chlorinated VOCs are present in
<br /> groundwater at levels in excess of Public Health Goals, and in shallow soil gas at
<br /> concentrations in excess of the California Human Health Screening Level (CHHSLs) for
<br /> commercial/industrial and residential land use scenarios.
<br /> The work plan describes the proposed scope of work to conduct subsurface soil gas and
<br /> limited groundwater investigation at the Site. It is proposed that four deep soil borings will be
<br /> drilled to depths of approximately 60 feet below ground surface (bgs) and completed as 2-inch
<br /> soil vapor extraction (SVE) wells and/or observation wells. One deep boring will be drilled and
<br /> completed as a groundwater monitoring well on the down gradient edge of the Site. In the
<br /> deep SVE wells, a groundwater sample will be collected from the first groundwater zone. An
<br /> additional six to eight, 2-inch diameter shallow SVE wells will drilled to about 25 feet bgs to
<br /> augment existing shallow soil gas data. The objectives of the work plan are to continue
<br /> defining the nature and extent of VOCs in shallow and deep soil gas and shallow groundwater,
<br /> identify existing and potential VOC contamination migration, evaluate the potential for
<br /> significant threats to public health, identify and evaluate appropriate response measures,
<br /> conduct an SVE Pilot Study to determine the effectiveness of that technology, and prepare a
<br /> Site Characterization Report (SCR) and Remedial Feasibility Study (RFS).
<br /> California Environmental Protection Agency
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