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Attachment A Statement of Work for KP-11S Well Abandonment Koppel Stockton Terminal 1.0 Background The Koppel Stockton Terminal(Koppel) is a former dry fertilizer warehouse.The site is located in Stockton west of Ventura Avenue,between the extensions of Hazelton Avenue and Sonora Street,approximately 1 mile west-southwest of the I-5/Highway 4 interchange,next to the Port of Stockton,California.The site layout of the Koppel Stockton Terminal is presented on Figure 1. Phytoremediation is being used to remove nitrogen from soil and groundwater at the site. A test grove of 267 poplar trees was planted on approximately one acre on the southern end of the site in May 1998 to evaluate the effectiveness of phytoremediation. An additional 1,250 hybrid poplar trees and 230 willow trees were planted in the vicinity of the turnaround area,stormwater pond,former bagging plant,and in the area north of the warehouse during March through June 2000. Spectrum Exploration drilled and constructed three monitoring wells at the Koppel Stockton Terminal in 2006:KP-10S,KP-11S,and KP-12S.The warehouse onsite that is operated by Headwaters Resources collapsed in March 2007. During the warehouse collapse and construction activities immediately following to stabilize the warehouse, Well KP-11S was damaged. The well construction diagram for KP-11S is attached. 2.0 Objective The objective of this procurement is to subcontract overdrilling and abandonment of Well KP-11S.The surface casing has been ripped off of the well during onsite construction activities.The total well depth was 23 feet,but the well appears to have been filled with dirt and fly ash to a depth of 11 feet(12 feet of debris). 3.0 Scope Subcontractor procurement will include health and safety items (detailed in Section 4.0), mobilizing to the site,overdrilling the well to remove the dirt and fly ash,placing cuttings in 55-gallon drums for CH2M HILL disposal,abandoning the well borehole,and decontaminating all equipment and personnel. All work in the vicinity of KP-11S will require working in Level C because of the presence of fly ash. Mobilization Subcontractor will mobilize equipment and staff to 2025 West Hazelton Avenue,Stockton. The subcontractor shall notify Brett Coulson/Headwaters Resources when entering the site.Before approaching Well KP-11S,subcontractor staff shall put on Level C PPE, including full-face respirator. KOPPEL-KPHSABANOONMENTSOWDOC SOLICITATION NO.