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1 Stantec " " February 10, 2014 _ Ms. Vicki McCartney San San Joaquin County Environmental Health Department 600 East Main Street uI n I 0 Stockton, CA 95202 Re: Well Destruction Work Plan ARCO Service Station No. 2130 7906 North El Dorado Street Stockton, California 95210 Dear Ms. McCartney: On behalf of Atlantic Richfield Company (ARC), a BP Affiliated Company , Stantec Consulting Services Inc. (Stantec) is submitting this well destruction work plan as part of the closure package for the ARCO Service Station No. 213o located at the above referenced address (the "Site", Figures 1 & 2). The Site has been part of an environmental investigation case under the direction of the San Joaquin County Environmental Health Department (SJCEHD). This work plan presents a detailed scope of work proposed for monitoring and remediation well destruction as required by SJCEHD letter dated August 23, 2013 (Attachment A). Well construction details and the proposed well destruction method for each well are included in Table 1. Site Health and Safety Plan As required by the Occupational Health and Safety Administration (OSHA) "Hazardous Waste Operations and Emergency Response" guidelines (29 CFR 1910.12o) and by California Occupational Health and Safety Administration (Cal-OSHA) "Hazardous Waste Operations and Emergency Response" guidelines (CCR Title 8, Section 5192), the contractor will prepare a site specific Health and Safety Plan (HASP). At a minimum, the HASP will define the proposed subsurface investigation activities, describe physical and chemical hazards that may be associated with the work, provide a map to the nearest emergency medical facility, and include material safety data sheets for any hazardous chemicals that will be used or produced during the work. A copy of the HASP will be available onsite at all times during field work. The field staff and contractors performing field activities will review the HASP prior to beginning field operations, as described in this work plan, at the site. Permitting Prior to beginning field work, all necessary permits will be obtained from the SJCEHD and the City of Stockton including an encroachment permit for the 5 monitoring wells (MW-6, MW-7, MW-14, MW-19, and MW-21) located in the right-of-ways. Underground Utility Location and Clearance. Well locations will be marked or cleared of underground facilities prior to well destruction activities. As required by the California Government Code 4216, Underground Service Alert (USA) North and 811 will be notified at least two working days before drilling activities. Well locations will be marked with white paint to indicate the area of drilling. This will allow USA North members, including local utility companies, to identify and mark the horizontal path of Design with community in mind