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May 2011 WNW re <br /> Project No. 1001-0343 as®ooiatµos,Inc. <br /> consists of Pleistocene, undifferentiated alluvial fan and terrace deposits, predominantly <br /> unconsolidated weathered to unweathered gravel, sand, silt and clay, with a maximum <br /> thickness of approximately 200 feet. <br /> The relatively flat surface of the San Joaquin Valley is underlain by alluvial, lacustrine, <br /> and marine sedimentary deposits that accumulated as the structural trough formed as the <br /> adjacent mountain ranges were elevated through tectonic processes. The thickness of the <br /> sediments varies from a thin veneer along the valley margins to thousands of feet thick at the <br /> axis of the trough. The main axis of the trough is oriented north-south along the valley's main <br /> drainage axis. <br /> Based on available reports (Geotracker) of a nearby leaking underground storage tank <br /> (LUST) site located approximately 650 feet west of the Project Site, groundwater is expected to <br /> be present at an approximate depths of 10 to 12 feet below ground surface. Additionally, <br /> shallow groundwater has been estimated to flow towards the southwest. <br /> 3.0 SCOPE OF WORK <br /> 3.1 PREPARATION OF SITE HEALTH &SAFETY PLAN <br /> Padre has prepared a site-specific Site Health & Safety Plan (HSP) for the subject soil <br /> and groundwater assessment program, which is attached as Appendix B. The HSP includes <br /> procedures, equipment, and materials/supplies employed to protect worker and community <br /> health and safety during the course of the assessment activities. The HSP also includes <br /> provisions for daily tailgate safety meetings. <br /> The HSP portion of the document details all necessary procedures, monitoring <br /> equipment, and other methods that will be employed to protect worker and community health <br /> and safety throughout the course of the assessment program. The HSP lists the chemical <br /> compounds most likely to be encountered during the field operations, and presents established <br /> exposure levels that will not be exceeded. In addition, the HSP lists the nearest appropriate <br /> hospital facility. All on-site personnel will be required to familiarize themselves with and sign the <br /> HSP in an attempt to minimize the potential site hazards. <br /> 3.2 PERMITS <br /> Padre will submit the appropriate drill hole permit application, fee, and supporting <br /> documentation to the San Joaquin County Environmental Health Department(SJCEHD)and will <br /> coordinate with the SJCEHD regarding abandonment of the drill holes. <br /> 3.3 CLEARANCE OF ASSESSMENT LOCATIONS FOR UTILITIES AND PIPELINES <br /> Since the proposed drill holes will be advanced through the base of the UST, subsurface <br /> utilities are not anticipated to be present beneath the tank. However, Padre will complete a <br /> pre-assessment site visit approximately 5- to 10-days prior to the scheduled start of field <br /> 10.0043.TWP HSP assessment r iced <br /> - -3 - <br />