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i <br /> APPENDIX A <br /> FQELD PRACTQCES AND PROCEDURES <br /> General procedures used by Stratus in site assessments for drilling exploratory borings, <br /> collecting samples, installing monitoring wells, sampling monitoring wells, analytical <br /> procedures, and assessment of data are described herein. These general procedures are <br /> used to provide consistent and reproducible results. However some procedures may be <br /> modified based on site conditions. In addition, this appendix presents a quality assurance <br /> plan adopted in conducting the activities described here. <br /> PRE-FIELD WORK ACTWITI[ES <br /> ]health and Safety Plan <br /> Field work performed by Stratus at the site is conducted according to guidelines established <br /> in a Site Health and Safety Plan (SHSP). The SHSP is a document which describes the <br /> hazards that may be encountered in the field and specifies protective equipment, work <br /> procedures, and emergency information. A copy of the SHSP is at the site and available <br /> for reference by appropriate parties during work at the site. <br /> Locating Underground Utilities <br /> Prior to commencement of any work that is to be below surface grade, the location of the <br /> excavation, boring, etc., is marked with white paint as required by law. An underground <br /> locating service such as Underground Service Alert (USA) is contacted. The locating <br /> company contacts the owners of the various utilities in the vicinity of the site to mark the <br /> locations of their underground utilities. Any invasive work is preceded by hand auguring <br /> to a minimum depth of five feet below surface grade to avoid contact with underground <br /> utilities. <br /> MELD METHODS AND PROCEDURES <br /> Drilling <br /> i <br /> Soil borings will be drilled using a truck-mounted, hollow stem auger drill rig. Soil <br /> samples for logging will be obtained from auger-return materials and by advancing a <br /> modified California split-spoon sampler equipped with brass or stainless steel liners into <br /> undisturbed soil beyond the tip of the auger. Soils will be logged by a geologist <br /> according to the Unified Soil Classification System and standard geological techniques. <br /> Soil sampling equipment will be cleaned with a detergent water solution (Ligonox or <br /> TCP), rinsed with clean water, and equipped with clean liners between sampling <br /> Page 1 <br />