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will be checked for appropriate vacuum pressure and labeled with the appropriate <br /> location and sample identification. Hydrogen Sulfide will be collected in Tedlar bags. <br /> All samples.will be analyzed by a California Certified Laboratory under chain of custody <br /> procedures. The borings will be closed as per San Joaquin County Environmental Health <br /> Department directives and grouted to the surface with a cement slurry containing 3%-5% <br /> bentonite. <br /> 6.3 Proposed Sample Collection and Health and Safety Procedures <br /> Prior to initiating fieldwork at the Site, all field personnel will familiarize themselves <br /> with the Site-specific health and safety plan. The health and safety plan pertains to field <br /> activities and includes information such as potential hazards encountered at the Site, <br /> personal protective equipment, and directions and telephone numbers to the nearest <br /> hospital. All personnel collecting samples at the Site will have completed 40 hours of <br /> OSHA classroom training and supervised field training concerning hazards that may be <br /> encountered at hazardous waste sites. <br /> After all surface samples are collected, a wooden stake and flagging will be placed in the <br /> sample hole and bearings and distance will be measured from an appropriate landmark at <br /> the Site. Pending the results of the surface samples, deeper and step-out samples will be <br /> collected and analyzed if necessary. Background samples collected at five feet bgs and <br /> all QA/QC duplicate samples will be sampled as outlined above and will be <br /> unidentifiable to the lab. Samples will be shipped via courier under Chain of Custody <br /> (COC) procedures to a California Department of Health Services Certified Laboratory. <br /> 6.3.1 Non Volatile Samples <br /> Non-volatile surface soil samples will be collected in laboratory supplied glass jars that <br /> will be inserted directly into topsoil loosened with a shovel. Below ground surface <br /> samples will be collected in laboratory supplied glass jars from soil tailings that have <br /> been excavated to the required depth by hand auger, shovel or excavation equipment. All <br /> of the above sample containers will be capped, labeled for identification and placed in a <br /> cooler chilled with ice. Prior to use at each soil sample location, all sampling equipment <br /> will be decontaminated in the field with a solution of laboratory grade, non-phosphate <br /> detergent and de-ionized water and then rinsed. <br /> 6.3.2 Volatile Samples <br /> Volatile samples (TPH-gasoline,TPH-Motor Oil, and TPH-Diesel) will be collected by <br /> driving a brass tube directly into the ground with a decontaminated rubber mallet or slide <br /> hammer. After samples are collected the tubes ends will immediately be covered with <br /> Teflon tape and a plastic cap. All of the above sample containers will be labeled for <br /> identification and placed in a cooler chilled with ice. Prior to use at each soil sample <br /> location, all sampling equipment will be decontaminated in the field with a solution of <br /> laboratory grade, non-phosphate detergent and de-ionized water and then rinsed. <br /> Preliminary Environmental Assessment Workplan <br /> Proposed Podesta Ranch Elementary School <br /> December 4,2006 <br /> Page 12 of 27 <br />