FIELD DOCUMENTS 1986 -1993 - Laserfiche WebLink

Home Browse Search

Mr. Cecchini .,, Page 2 _ June 28, 1993 In July of 1992, the owner, Delta Truck, foreclosed the property to Cecchini, Cecchini & Giovannoni. These new owners are actively seeking to close the site. They retained ESE as a consultant to assist with these objectives. Initial Stockpile Sampling On August 5, 1992, ESE visited to the subject site to determine the current.status and characterize the soil. A total of 32 soil samples were collected from the soil at a minimum depth of one foot into the pile using clean, two by six inch brass tubes. The samples tubes were immediately capped with teflon tape and plastic caps, sealed with duct tape, labeled, and transported cold under chain of custody to a state certified analytical laboratory. The laboratory composited every four samples into one for prior to analysis. The requested soil analyses were Total Petroleum Hydrocarbons (TPH) as diesel'and TPH as gasoline using the California DOHS Methods, and BTEX using EPA method 5030/8020. Analyses for Title 26 metals and a fish bioassay were also completed on two samples. Analytical results for the composite soil samples analysis indicated nondetectable TPH as gasoline, and BTEX and TPH as diesel ranging from 24 to 1,900 milligrams per Kilogram (mg/kg). Title 26 metals were all below Total Threshold Limit Concentrations (TTLQ; lead was found at a maximum concentration of 4 mg/Kg; and the fish bioassay results indicated the soil is nontoxic. Based on these analytical results, ESE recommended several remedial options to the owner. Onsite remediation by enhanced bioremediation methods was selected. A workplan for enhanced bioremediation of the stockpiled soil was issued to the San Joaquin County Environmental Health Department (County) on October 21, 1992. Addendums were also issued in response to comments by the County on January 21, 1993 and April 19, 1993. In October 1992, the stockpile was moved from the former Thomas Yard to an adjacent fenced area in order to alleviate storm water drainage problems at the site. Figure 1 - Site Plan shows the current location of the stockpiled soil. April 1993 Soil Sampling Event In accordance with a request by the County, additional stockpile sampling was performe on April 28, 1993. In the presence of Mr. Michael Infurna of the County, the stockpile was measured and sampled. A grid was established for the purpose of systematic sampling, as shown on Figure 2 - Stockpiled Plan. Soil was sampled using clean two by six inch brass tubes. The sample tubes were immediately capped with teflon tape and plastic caps, sealed with duct tape, labeled, and transported cold under chain of custody to ESE's California '' '