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San Joaquin County <br />Environmental Health Department <br />1868 East HazeIton Avenue <br />Stockton, California 95205-6232 <br />DIRECTOR <br />Donna Heran, REHS <br />PROGRAM COORDINATORS <br />Robert McClellon, REHS <br />Jeff Carruesco, REHS, RDI <br />Kasey Foley, REHS <br />Linda Turkatte, REHS <br />Rodney Estrada, REHS <br />Adrienne Ellsaesser, REHS <br />Website: www.sjgov.org/ehd <br />Phone: (209) 468-3420 <br />Fax: (209) 464-0138 <br /> <br />August 26, 2014 <br />Carol Lee Holland <br />CCJS LLC <br />26126 Camino Real <br />Carmel, CA 93923 <br />Subject: 3931-4001 N. Wilson Way, Stockton, CA <br />Limited No Further Action Required <br />Dear Ms. Holland <br />The San Joaquin County Environmental Health Department (EHD) has received and reviewed <br />Report of Findings Phase ll Limited Excavation Activities (Report), dated 20 May 2014, <br />prepared by your consultant Krazan & Associates, Inc. (Krazan). The EHD received the Report <br />29 July 2014 by electronic mail. <br />The scope of work completed and reported included: 1) excavation on 01 May 2014 of an <br />approximately 7-foot by 50-foot area to a depth of 2 feet below surface grade (bsg) to remove <br />hydrocarbon-impacted soil, and 2) collection of soil samples for laboratory analysis to document <br />removal of the hydrocarbon-impacted soil. The hydrocarbons impacting the soil were <br />characterized as total petroleum hydrocarbons quantified as diesel (TPHd) and as motor oil <br />(TPHmo). The hydrocarbons had been detected in a composite soil sample (S26, S27, S28, <br />S29) collected in the pre-excavation area at concentrations of 1,200 milligrams per kilogram <br />(mg/kg) TPHd and 21,000 mg/kg TPHmo. The objective of the self-directed corrective action <br />was removal of the hydrocarbon impacted soil in the targeted area. <br />An EHD representative was present to observe most of the excavation work and the final <br />phases of backfilling the excavation; unfortunately, due to a miscommunication an EHD <br />representative was not present to observe the actual soil sampling. An EHD representative <br />examined the soil spoil pile and noted the occurrence of dark, possibly stained soil clods, but <br />which also may have been naturally dark. The clods were dry and the presence of actively <br />mobile hydrocarbons was not noted. <br />The Report documented collection of four soil samples from the excavation walls, two soil <br />samples from the excavation floor, and a composite soil sample from the soil spoil pile. The six <br />soil samples collected from the excavation did not contain detectable concentrations of either <br />TPHd or TPHmo; these soil samples were not analyzed for metals. The soil spoil pile composite <br />sample contained 70 mg/kg TPHmo, but did not contain a detectable concentration of TPHd or <br />metals concentrations above background concentrations normal for California soil. The <br />excavated soil was reportedly transported to Forward Landfill in Manteca for disposal <br />(transportation/disposal manifests were not included in the Report).