Laserfiche WebLink
LK E/NFELOER <br /> sqm r.anx.nynsowno,.. <br /> estimated that each pile was composed of approximately 9 cubic yards of waste, <br /> equivalent to the volumetric contents of one dump truck. Therefore, the parcel contains <br /> approximately 9,500 cubic yards (9 cubic yards x 1,056 piles), not 20,000 cubic yards <br /> as previously reported. <br /> The soil piles are not arranged uniformly, thus a grid system of sampling is proposed <br /> consisting of 6 areas measuring approximately 285 feet x 200 feet and one smaller area <br /> approximately 285 feet x 180 feet in the northern portion of the site (Plate 3). <br /> At least 12 soil samples will be collected from the first 5,000 cubic yards of soil derived <br /> from the stockpiles, with one additional sample collected for each additional 1,000 cubic <br /> yards of soil. A grid was used to divide the area into 7 sections; soil will be sampled as <br /> shown on Plate 3. The number of stockpile samples per grid was established using the <br /> total number of piles counted within each grid cell. A total of 17 samples will be <br /> collected. Kleinfelder proposes to collect the soil samples from a depth of 2 feet within <br /> the stockpile using a hand auger/slide hammer tool. Soil samples will be contained in <br /> stainless steel tubes, capped with Teflon tape and tightly fitting plastic caps. The <br /> contained soil samples will be labeled, recorded on a chain of custody, and stored in a <br /> chilled cooler on site before transport to a certified analytical laboratory. A global <br /> positioning system (GPS) instrument will be used to record each sample location. <br /> Soil beneath the Soil Piles <br /> In addition to the soil stockpile sampling the RWQCB requested soil samples be <br /> collected from native soil beneath the soil piles. Soil samples will be collected from a <br /> single borehole advanced using a hand auger/slide hammer tool at seven locations (one <br /> for each grid area on Plate 3). The proposed number of and sample depths are: <br /> • Seven soil samples at ground level or interface between the bottom of the soil <br /> pile 0-6 inches, <br /> • Seven soil samples 12-18 inches, and <br /> • Seven soil samples 24-30 inches. <br /> A total of 21 soil samples will be collected. At this time Kleinfelder proposes to only <br /> analyze the 0-6 inch soil sample and hold the deeper samples pending the need to <br /> analyze the deeper samples based on the results. <br /> 128328/SAC14R0267 Page 4 of 11 July 12, 2013 <br /> Copyright 2013 Kleintelder Revision 2-February 14,2014 <br />