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Pre-Design Investigation Workplan Former Manufactured Gas Plant—Lodi, California 4.0 FIELD PROCEDURES Field procedures presented in this section will be followed during the implementation of the investigation described in Section 3.0. This section includes methods for conducting utility clearance, drilling and associated soil sampling, and soil gas probe installation and associated soil gas sampling. 4.1 PERSONNEL AND PROCEDURES All environmental work described in this Workplan will be performed by qualified and experienced field staff working under the supervision of a California Professional Geologist or Civil Engineer. Supervised field activities will include the following: collecting soil and soil gas samples, coordinating delivery of the samples to certified analytical laboratories, and overseeing all phases of work including managing subcontractors, developing soil boring logs and other sampling forms, analyzing data, and preparing the memorandum. All field procedures will follow applicable City of Lodi, San Joaquin County, and State of California guidelines at the time the work is performed. 4.2 PERMITTING AND ACCESS San Joaquin County requires that a drill permit be obtained for the completion of soil borings and soil gas wells and the City of Lodi will require an encroachment permit for work in the street. An access agreement will be executed between Lodi Iron Works and PG&E prior to conducting the proposed sampling on the Lodi Iron Works property. Additionally, as required by the DTSC, notification will be made five business days in advance of planned drilling and sampling activities. 4.3 HEALTH AND SAFETY PLAN A Health and Safety Plan (HASP) will be prepared in conformance with the U.S. Occupational Safety and Health Administration (OSHA) and California Division of Occupational Safety and Health (Cal/OSHA) guidelines set forth in "Hazardous Waste Operations and Emergency Response" (29 CFR 1910.120 and Title 8, California Code of Regulations, Section 5192). The HASP will provide information regarding anticipated Site health and safety matters, and will establish policies and procedures adequate to protect Site workers from predicted Site hazards. The HASP will include specific information with regard to chemicals of potential concern at the Site and the hazards associated with the fieldwork. The information will include action levels, planned responses to potential injuries,directions to the nearest hospital, a list of emergency phone numbers, and material safety data sheets. The HASP will be reviewed and signed by all personnel and subcontractors performing work on the Site. A copy will be present on-site at all times and kept in an easily accessed location. 4.4 UTILITY CLEARANCE Utility clearance will be obtained prior to commencing intrusive investigation activities. Once the proposed sampling locations have been marked, Underground Service Alert will be notified at least RRA PACIFIC GROUP Page 11 April 4, 2012