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KLE/NFELOER <br /> \\ '/Bright People.Right Solutions. <br /> January 16, 2013 <br /> Project Number: 131248 <br /> Costco Wholesale <br /> c/o Jones Covey Group <br /> 9595 Lucas Ranch Road <br /> Rancho Cucamonga, CA 91730 <br /> Attention: Walter Friesen <br /> Subject: Transmittal of Soil Characterization Results <br /> Proposed Fuel Additive Underground Storage Tank Site <br /> Costco Wholesale Warehouse No. 1091 <br /> 322 East Harney Lane, Lodi, California <br /> Dear Mr. Friesen: <br /> This letter transmits results of soil sampling performed for Costco Wholesale Corporation <br /> (Costco) at the location of a proposed fuel additive underground storage tank (UST) to be <br /> installed at the existing Costco Wholesale Warehouse No. 1091 facility (see Site Plan provided <br /> as Attachment A). The purpose of the sampling was to obtain soil characterization data for use <br /> by the Jones Covey Group in facilitating disposal of soil that will be excavated during UST <br /> installation. Pertinent information is summarized below and in Attachments A through D. <br /> Date Drilled/Sampled: January 9, 2013 <br /> Driller: Vironex, Inc. <br /> Number of Borings: One (Boring B-1, at location shown on attached Site Plan in Appendix A) <br /> Boring Type: Direct-Push <br /> Number of Soil Samples: Three <br /> Sample Depths 2 feet, 5 feet, and 8 feet <br /> (below ground surface [bgs]): <br /> Photoionization Detector 0.0 parts per million <br /> (PID) Readings: <br /> Soil Description: See Log of Boring B-1 provided as Attachment B <br /> Depth to Groundwater: Not encountered <br /> Backfill Method: Backfilled with neat cement grout from bottom of borehole to 3 feet bgs, <br /> soil cuttings from 3 feet bgs to 0.5 foot bgs, and blackened concrete from <br /> 0.5 foot bgs to the surface <br /> Decontamination and Vironex, Inc. brought sufficient decontaminated sampling equipment to <br /> Investigation-Derived Waste Site such that no IDW was generated <br /> (IDW) Disposal Procedure: <br /> 131248/IRV13L0120 Page 1 of 2 January 16, 2013 <br /> Copyright 2013 Kleinfelder <br /> 2 Ada, Suite 250, Irvine, CA 92618 p 1949.727.4466 f 1949.727.9242 <br />