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f <br /> Page 2 of 2 <br /> In your absence,I contacted Mr. Mike Inferna from your office to discuss the progress of the field <br /> work for the above-referenced site. <br /> Based on my telephone conversation with Mr. Inferna;Holguin, Fahan& Associates, Inc. (HFA), <br /> I <br /> on behalf of Chevron Environmental Management Company, is requesting an extension of the <br /> agency deadline to complete the site assessment field work for the above-referenced site. <br /> As you are.aware, the San Joaquin County Environmental Health Department (SJCEHD) <br /> approved additional site assessment activities in correspondence dated September 17,2010. The <br /> SJCEHD's letter stated a deadline to complete the field work by November. 19, 2010. <br /> HFA has been conducting field work at the site since Monday,November 15, and was scheduled <br /> to complete the proposed activities by the specified deadline. However, due to unforeseen' <br /> complications and encountered conditions, the work is progressing much slower than planned.. <br /> The main encumbrance is significant amounts of construction debris that is being encountered at <br /> depths of 4 to 8 feet below grade. The moderate to large pieces of concrete and asphalt pavement <br /> are hindering clearance of the boreholes for utility clearance and also hindering the overall <br /> advancement of the.proposed CPT borings. The debris has necessitated the mobilization of two <br /> additional pieces of equipment,including a different CPT.rig. HFA's field schedule has already <br /> been extended into next week based on the delays and availability of alternate equipment. <br /> Going forward, HFA expects to collect the required CPT data by friday,November 19, 2010, and <br /> complete the soil and groundwater sampling the.following week.. In order to allow for additional <br /> unforeseen conditions and account for the upcoming Thanksgiving holiday,HFA kindly requests <br /> a 30-day extension, which would set a new deadline to complete fieldwork by December 19, <br /> 2010. <br /> Thanks, <br /> Eli Scott <br /> Associate Environmental Scientist <br /> Holguin, Fahan &Associates, Inc. <br /> 5627 Stoneridge Drive, Suite 320 <br /> Pleasanton, CA 94588 <br /> Office: (925)397-0997 x403 <br /> Cell: (805) 766-3770 <br /> Fax: (925)737-0065 <br /> I <br /> I <br /> 11/19/2010 <br />