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Califol Regional Water Quality Control Board <br /> Central Valley Region • <br /> Katherine Hart,Chair <br /> Linda S.Adams Arnold <br /> Secretaryfor 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 Schwarzene <br /> Environmental Phone(916)464.3291 •FAX(916)464-4645 ggt <br /> h //www.waterbouds.ca. ov/centralvalle Governor <br /> Protection �� B <br /> 19 April 2010 RECOWE" <br /> APR 2 0 2010 <br /> Dennis and Don Altnow ENYR((WWENT HEAJH <br /> D & D Properties, LLC PERMITISERVICES <br /> 927 Black Diamond Way <br /> Lodi, California 95240 <br /> SOURCE REMOVAL EXCAVATION REPORT, FORMER LTS RENTALS TRUCK YARD, <br /> 1430 AND 1600 SOUTH CHEROKEE LANE, LODI, SAN JOAQUIN COUNTY <br /> Regional Water Quality Control Board, Central Valley Region (Central Valley Water Board) <br /> staff reviewed the 25 February 2010 Source Removal Excavation Report(Report) <br /> submitted by Ground Zero Analysis, Inc. (GZA) on behalf of D&D Properties, LLC (D&D) <br /> for the former Tiger Lines Truck Yard on South Cherokee Lane in Lodi (Site). <br /> The Report describes the soil removal action at the Site. The removal action was <br /> conducted in two phases at the locations of the former above ground tank (AGT) <br /> containment area and the former pump island area. Phase 1 was the AGT area removal <br /> action, which was conducted between 18 and 25 November 2009. About 1,500 cubic yards <br /> (yd3) of clean overburden to depths of about five to seven feet were removed and <br /> stockpiled. Then about 3,800 yd of contaminated soil were excavated and stockpiled on <br /> site and covered with plastic sheeting. The excavation ranged in depth from 15 to 38 feet <br /> below ground surface (bgs) and encountered total petroleum hydrocarbons as diesel <br /> (TPHd) at concentrations up to 17,000 milligrams per kilogram (mg/kg) as deep as 23 feet <br /> bgs. Central Valley Water Board staff conducted a site visit on 6 December 2009. Between <br /> 18 November 2009 and 14 January 2010, about 2,400 yd3 of the contaminated soil were <br /> hauled off to Forward Landfill in Manteca for disposal. The offsite hauling was temporarily <br /> halted due to a storm water discharge notice of violation issued by City of Lodi on <br /> 7 December and may resume during dry weather. <br /> Phase 2 included excavating the former pump island area between 4 and 18 January 2010. <br /> Clean overburden was encountered to about seven feet bgs which was removed and <br /> stockpiled on site. Maximum TPHd concentration encountered was 1,000 mg/kg at 17 feet <br /> bgs. Confirmation samples collected from depths ranging from 20 to 28 feet bgs on <br /> 14 January were non-detect (ND). About 5,000 yd of contaminated soil were removed, <br /> stockpiled on site and covered with plastic sheeting. Three of 11 4-point composited <br /> samples taken to profile the stockpile contained minor concentrations of TPHd and lead. <br /> D&D calculated that the TPHd concentrations were below designated waste levels using the <br /> Designated Level Methodology. The clean overburden was used to backfill the lower <br /> portions of the excavations to address side-wall stability issues. The material was <br /> compacted by driving the heavy equipment over the fill. Central Valley Water Board staff <br /> California Environmental Protection Agency <br /> pia Recycled Paper <br />