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- - - ---- - - — - - ------- -- -- -- -r- - <br /> Geological Technics Inc -- - — - - ----Page 2 `a <br /> Appendix A <br />' Project No 2812 <br /> January 29,1996 <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 Tracy Fire Department <br /> Phone No 911 <br /> 3 Company Health and Safety Coordinator <br /> Name Ray Kablanow <br /> 1 Phone No (209)538-6424 <br />' 20 QUALITY ASSURANCE PROGRAM <br /> The following measures will be taken by Geological Technics Inc to ensure that a high quality study <br />' 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 a <br /> licensed well driller Soil samples may be collected using a 2 inch (i d ) modified California split <br /> spoon sampler,or continuous coring device,lined with brass sample tubes <br />' 2.2 Boring togs <br />' A detailed log will be made of each boring The information to be noted includes sample depths, <br /> blow counts if continuous coring devise is not used, horizons of detectable contamination (detected <br /> by field methods), soil classification utilizing the Unified Soil Classification System and sediment <br /> description (color, texture, composition, hardness, moisture content, and post-depositional changes <br />' that have occurred in the sediments) <br /> 23 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 Wash <br /> ` water may be containerized in DOT approved 55 gallon drums, labeled,and stored on site until their <br /> ' disposition can be arranged Plastic gloves will be worn during sample collection and changed <br /> between all samples <br /> ' 2.4 Cham of Custody <br /> Chain of Custody(CofC) forms are legal documents used to track'the handling of samples All dates, <br /> ' times,persons and their companies will be listed from the time the sample is collected to its ultimate <br /> disposal A CofC form will be filled out for all samples collected The CofC will be tracked to ensure <br /> sample integrity <br />