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k` ■ KLEINFELDER <br /> PROPOSED TEMPORARY MONITORING WELL LOCATIONS <br /> - March Lane, approximately 75 feet east of UPRR <br /> - March Lane, approximately 75 feet west of UPRR <br /> Soil cuttings and water generated while drilling will be contained in 55-gallon drums for the City <br /> of Stockton to store and/or properly dispose of. Water generated during steam cleaning of auger <br /> and/or equipment and development/sampling of the temporary wells will also be similarly <br /> contained. After the temporary wells are sampled, the casing will be removed and the borings <br /> will be grouted. The existing pavement sections will be repaired with cold patch asphalt concrete <br /> to match the existing sections. <br /> Task 3 - Collection of Groundwater Samples <br /> Kleinfelder will collect samples from the 2 temporary monitoring wells. Following the <br /> completion of Task 2, the wells will be purged and sampled as described in Attachment B, <br /> Section B-4.2. Water generated from the purge process will be contained as described in Task 2. <br /> Task 4 - Laboratory Analysis <br /> Each of the soil and water samples selected for quantitative analysis will be submitted under <br /> chain-of-custody control to Sequoia Analytical Services (Sequoia) of Sacramento, California. <br /> Sequoia is certified by the California Department of Toxic Substances Control to perform the <br /> requested analysis. <br /> It is anticipated that four soil samples from each soil boring, one groundwater sample from each <br /> well, a field blank, and a trip blank will be submitted for chemical analysis. Tile 8 soil and 2 <br /> water samples will be analyzed for the following: <br /> • BTEX by EPA Methods. <br /> • Total petroleum hydrocarbons as referenced to gasoline by EPA methods <br /> • Total extractable petroleum hydrocarbons as referenced to diesel and motor oil by <br /> EPA methods <br /> • Total lead by EPA methods <br /> The samples will be analyzed on a standard laboratory turnaround requiring approximately 10 <br /> working days for results. If desired, a rush laboratory turnaround time of 48 hours may be <br /> perforrned for double the fee. <br /> 20-3712-08.EO1/2018P098 Page 3 of <br /> © 1998 Kleinfelder, Inc. April 8, 1998 <br />