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Pas: 2. <br /> .r the sample from piping #2 showed 11. mglkg for total volatile <br /> hydrocarbons. <br /> 4 . Laboratory that will collect soil sanplest McLaren Environmental <br /> Engineering <br /> 11101 White Rock Road <br /> Rancho Cordova, Ca. <br /> 5. Re-excavation and re-sample steps : <br /> We are proposing to re-excavate the West end of tank 02 <br /> of the original excavation with a backhoe to a depth of 18 ' . The <br /> hole will be 8 ' wide x 8 ' long - 64 sq. ft . The original sample <br /> was taken at a depth of 10' . We will collect four side wall samples <br /> at this depth and one bottom at 15 ' . All excavated soil will be <br /> placed on 6 mil plastic and covered with same. The amount of <br /> excavated soil is estimated to be 35 cubic yards, which will <br /> require 1 sample . This sample will be taken at the same time as <br /> the other samples . The hole will be barricaded. <br /> We are also proposing to re-excavate the # 2 piping area of the <br /> original excavation with a Backhoe to a depth of 3 ' . The hole <br /> will be 5 ' long x 3 ' wide - 15 sq . ft . The original sample was <br /> taken at a depth of 1' . We will collect four side wall samples <br /> at this depth, and one bottom at 3 ' . All excavated soil from <br /> this area will be placed with and in the same manner as soil taken <br /> from tank #2 . The results will determine the next step . <br /> Should the sample from the holes be clean along with the excavated <br /> soil , the soil will be returned . <br /> Should the holes be clean and the soil not clean, hopefully, the <br /> sample result levels are low enough to allow aeration of the <br /> excavated soil on site under permits, guidelines, and direction <br /> of the San Joaquin County Air Pollution Dept . <br /> If the level of contaminates show too high for aeration, the soil <br /> will be transported to a proper hazard waste facility for disposal. <br /> If the soil is removed from the site, it shall be transported <br /> under proper licensure. Any manifests provided during transfer <br /> shall have a copy provided to SJLHD within 30 days . <br /> 6. Timing : Sampling could be scheduled within 30 days following <br /> your review of this work plan . Advance inspection notice of <br /> at least 48 hours will be given to SJLHD for resampling inspection. <br /> The sample analysis should be ready for your review 4 to 5 weeks after. <br /> they have been taken. <br /> Very Truly yours, <br /> Tim Ahearn <br /> Contact Person <br /> TA/bj 1 <br />