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PES Environmental, Inc. <br /> Ms. Emily Cushman <br /> November 24, 2015 <br /> Page 4 <br /> Soil Sampling Methodology and Chemical Analysis <br /> Truck-Mounted Direct-Push Technology Soil Sampling Methodology <br /> At each boring location, continuous soil cores will be collected to depths of 20 to 25 feet <br /> below ground surface (approximately 5 to 10 feet below first encountered groundwater) by <br /> driving a 4-foot long by 2-inch outside-diameter open-tube sampler into undisturbed soil. The <br /> open-tube sampler will be lined with a 4-foot long, clear acetate sample sleeve. Soil samples <br /> will be collected from the acetate sample sleeve in accordance with U.S. EPA Method 5035 <br /> using laboratory-supplied Terracore'' (or equivalent) samplers.. Soil samples will be collected <br /> every four feet for the total depth of drilling. One field duplicate sample will also be obtained <br /> at a frequency of one per ten samples for quality control purposes.. Soil sample depths are <br /> subject to change based on the results of field screening, observations of changes in lithology, <br /> or visual or olfactory indications. <br /> Filled sample containers will be labeled for identification and immediately placed in a chilled, <br /> thermally insulated cooler (containing either bagged ice or blue ice) until delivery under <br /> chain-of-custody protocol to the project laboratory. Each soil sample will be assigned a sample <br /> number that will be entered on the chain-of-custody form. The chain-of-custody form will <br /> accompany the sample shipment to the laboratory to document sample possession from the time <br /> of collection. <br /> Chemical Analysis Program for Soil <br /> All soil samples collected during the investigation will be submitted to the project laboratory <br /> for analysis or archiving. Soil samples selected for analysis will be analyzed for the following <br /> constituents: <br /> • Total Petroleum Hydrocarbons quantified as gasoline (TPHg); <br /> • Benzene, toluene, ethylbenzene, and total xylenes (BTEX); and <br /> • Methyl tertiary butyl ether (MTBE), t-Butyl alcohol (TBA) and naphthalene. <br /> All constituents will be analyzed using U.S. EPA Test Method 8260B. <br /> 148400101 W003.dmx <br />