ARCHIVED REPORTS XR0009904 - Laserfiche WebLink

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�f Corrective Action Plan Page 32 work may place on the depth and areal extent of the excavation so as to limit the risk of damage to adjacent property However, for planning purposes, it is estimated that 1,100 cubic yard of contaminated soil, as measured in situ, will be excavated from the site and that when excavated and transported its volume will expand to some 1,600 cubic yards Slodipiling f Contaminated Soil Except for soil that can be immediately spread for aeration as it arrives, the soil transported to the West Blewett Road site will be stockpiled and covered with a minimum, 6 in thickness of uncontaminated soil scraped from the surface of the treatment site This cover will be placed at the end of each day's soil transport operations In compliance with Rule 4651, one composite sample will be obtained from the covered stockpile at the aeration site within 24 hours of the transported soil being deposited there (i a One composite sample will be obtained from each days' production of contaminated soil that is transported to the aeration site and stockpiled prior to treatment ) Each composite sample of the stockpiled soil will be prepared and analyzed as described below One sub-sample will be recovered from a depth of approximately one foot (but not less than 3 in exclusive of the thickness of any clean soil covering the stockpile at the time of sample recovery) beneath the surface of each of four equal sectors of the area of the 1pstockpile to be sampled The sub-samples will be recovered in clean,n, 2 m , diameter by 6 in long, brass, sampling tubes driven into the bottom of the sampling pit until the tube is completely filled with soil Following sample recovery, each sample tube will be cleaned externally, its ends covered with aluminum foil and closed with tightly fitting plastic caps The caps will be secured with adhesiveless tape Each sample tube will then be labeled for identification, entered into chain-of-custody control and packed on chemical ice for transport, within 24 hours, to a laboratory certified by the CEPA Prior to analysis at the laboratory, each of the four sub-samples from a separately investigated area of the stockpile will be composited to form a single representative sample The composite will be analyzed to determine the concentrations by weight of total petroleum hydrocarbons quantified as gasoline (TPHg) that it contains by EPA Reference Method 8240/8015 Rate of Removal of Contaminated Sri.1from,,t Rule 4651 limits the maximum daily rate at which contaminated soil can be added to a spread of soil undergoing active aeration This limiting rate is determined by the volatile organic content of the soil Based on the data obtained from analysis soil samples recovered from the borings drilled to install monitoring wells at the 152 East 11th Street site it is estimated that the mean concentration of total petroleum hydrocarbons in the soil to be aerated will be some 800 parts per million by weight (ppm) Under Rule 4651, soil r