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k" KLEINFELDER 2 SCOPE OF WORK 2.1 TRENCHING OPERATIONS AND SAMPLING TECHNIQUES 2.1.1 Field Preparation Before performing work in the field, environmental staff will review the scope of work, prepare a health and safety plan, coordinate the work to be done with their supervisor, assemble the necessary sample equipment containers, and check, calibrate and clean equipment to be used in the field. Underground Service Alert (USA) will also be contacted prior to field work. The property owners will also provide information on the known or suspected location of utilities in the area of the investigation. 2.1.2 Trenching Operations Trenching Procedures Kleinfelder proposes to explore subsurface conditions at the site by g excavatio trenches with an excavator operated by a Kleinfelder subcontractor. Field personnel will have 40-hour Occupational Safety and Health Administration Hazardous Waste Operator Certification, per Title 8 California Code of Regulations Section 5192. The depths of exploration will vary from present ground surface to the depth of debris, assumed to be approximately 20 feet below grade based on previous borings. A geologist or environmental professional from Kleinfelder will maintain a log of the soils and debris encountered and obtain samples for visual examination. Grab samples will be obtained from the excavator bucket or the spoil pile and will be placed in zip-lock bags for possible later use should some question arise relative to waste characterization. Upon completion of trenching and sampling, if potential hazardous materials are not observed, the trenches will be backfilled with the excavated soil debris. In the event potentially hazardous materials are identified visually or by other means within the exploratory trenches, the trenching operation will be immediately terminated and the parties with interest in the Martin Metal property will be contacted to discuss the situation and develop a course of action 23-4824150-Ao0/CR96S052 Page 3 of 7 June 7, 1996 . Copyright 1996 Kleinfelder,Inc.