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ENV1R <br />ASC <br />Boring Abandonment <br />All borings will be sealed and abandoned in accordance with EHD requirements. <br />Quality Assurance/Quality Control (QA/QC) Procedures <br />Quality Assurance/Quality Control (QA/QC) procedures will be used to minimize the potential for <br />contamination of soil samples. The QA/QC procedures may include the use of single-use sampling <br />equipment, decontamination of drilling and sampling equipment by washing with a solution of potable <br />water and Liqui-Nox solution or equivalent between borings, changing latex protective gloves after each <br />sample, and recording sample information on chain-of-custody forms. <br />Sample Laboratory Tests <br />Soil samples will be transported to a California state certified analytical laboratory where the following <br />Environmental Protection Agency (EPA) tests will be performed: total petroleum hydrocarbons as <br />gasoline (TPH-g) by 8015B, total petroleum hydrocarbons as diesel (TPH-d), BTEX by 8260, CL HL by <br />8260, Oxygenates by 8260, Metals and PCBs. <br />PROPOSED TIME SCHEDULE FOR WORK <br />Assuming approval of this worlcplan, we propose to perform the work as soon as scheduling allows. <br />Standard laboratory turn-around is ten business days. We will forward the results of the work to the <br />Client within one week of receipt of the laboratory results. <br />REPORT PREPARATION <br />A letter report will be prepared to present the analytical test results for the soil samples. The letter report <br />will include laboratory test result sheets and chain-of-custody documentation. <br />LIMITATIONS <br />The proposed scope of work for the Soil Sampling has been tailored to address the specific issues of soil <br />impacts from the possible source areas at the site and adjacent property soil impacts. If additional <br />investigation is requested, such investigation will be performed as a separate scope of work. <br />• <br />Page 5 <br />April 19, 2012 <br />Project Numbers 2012-04-010 <br />C ENVIRO ASSESS ENVIRONMENTAL • ENGINEERING • GEOLOGY <br />PHONE (877) 629-6838 FAX (877) 623-5493