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_ l <br /> Geological Technics InP Page 2 . <br /> Appendix A <br /> Project No.251.2 <br /> December 20,1995 <br /> e. <br /> 1.2 Health and Safety Agencies <br /> 1. County Department of Environmental Resources <br /> Name: Diane Hinson <br /> Phone No: (209)468-3450 <br /> 2. Fire Department <br /> Name: Stockton Fire-Department <br /> Phone No: 911 <br /> 3. Company Health and Safety Coordinator <br /> Name: Ray Kablanow <br /> Phone No: (209)538-6424 <br /> i <br /> i <br /> 2.0 QUALITY ASSURANCE PROGRAM <br /> The following measures will be taken by Geological Technics Inc. to ensure that a high quality <br /> study is conducted and that cross contamination does not occur. <br /> 2.1 Equipment <br /> Soil borings may be.drilled with a hollow stem continuous flight auger,owned and operated by <br /> a licensed well driller. Soil samples may be collected using a 2 inch (i.d.) modified California <br /> split spoon sampler,or continuous coring device,lined with brass sample tubes. <br /> 2.2 BoringLogs <br /> A detailed log will be made of each boring. The information to be noted includes: sample <br /> depths,blow counts if continuous coring devise is not used,horizons of detectable contamination <br /> (detected by field methods), soil classification utilizing the Unified Soil Classification <br /> System and sediment description(color,texture,composition,hardness,moisture content,and <br /> post-depositional changes that have occurred in the sediments). <br /> 2.3 Cross Contamination Prevention <br /> All sample equipment(split spoon sampler or core tube,brass tubes etc.) and auger(drilling rod, <br /> drilling bits, &auger,etc.) will be thoroughly cleaned before being used and between uses. <br /> Wash water may be containerized in DOT approved-55 gallon drums,labeled,and stored on site <br /> until their disposition can be arranged. Plastic gloves will be worn during sample collection and <br /> changed between all samples. <br /> 2.4 Chain of Custody <br /> Chain of Custody(CofC) forms are legal documents used to track the handling of samples All <br /> dates, times, persons and their companies will be listed from the time the sample is collected to <br /> its ultimate disposal. A CofC form will be filled out for all samples collected. The CofC will <br /> be tracked to ensure sample integrity. <br /> 'I <br />