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I <br /> miles, respectively Surface drainage at the site leads to a drainage ditch located approximately <br /> 100 feet to the south of the sites southern boundary, <br /> 3.0 SOIL REMEDIATION PLAN <br /> 3.1 WorkScope/Methodology <br /> The excavated, hydrocarbon contaminated soil will be treated on-site utilizing bzoremedial <br /> methodology. <br /> The following scope of work is proposed. <br /> 1.) Prior to beginning bioremediation, four soil samples will be collected from the <br /> contaminated soil in order to conduct various biodegradability and toxicity analyses for <br /> determination of the most appropriate bioremedial methodology These soil samples will <br /> be analyzed for the available nutrient concentrations and viable microbial population size. <br /> 3 <br /> The=alytical data will be used to determine the amounts and types of soil amendments <br /> 1 <br /> necessary to maximize the biodegradatrve process. <br /> 2.) The excavated soil, now designated as Treatment Cell 1 <br /> e� (TC1), is approximately 1000 <br /> cubic yards with an average height of 18 inches. All contaminated soil is underlain with <br /> six mil plastic sheeting All bioremediation activities will be conducted on-site under <br /> authorization from the San Joaquin Air Pollution Control District (APCD) pursuant to <br /> AB884 Last and Criteria <br /> r <br /> 3.) Based on a review of analytical results, the average starting concentration of TPH as <br /> diesel is approximately 175 ppm Nutnents will be applied to TCI using a 25 parts <br /> carbon to 5 parts nitrogen to 1 part phosphorous ratio <br /> 4 ) TC1 will be hydrated and tilled every 7-10 days in order to provide sufficient moisture <br /> and oxygen to the soil's nacroorgamsms All tilling and watering will be conducted by <br /> IUISR$]x WP 4 <br />