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KLEINFELDER ATTACHMENT A Workplan Limited Soil and Groundwater Assessment Proposed Home Depot Store CA-725 Feather River Drive Stockton, California File No.: 20-YP9-022 May 18, 1999 INTRODUCTION Kleinfelder is pleased to present this proposal to Home Depot USA Inc.. This proposal was developed based on conversations with Mr. Rick Manners regarding environmental issues at the site. Kleinfelder is committed to providing quality service to its clients, commensurate with their wants, needs and desired level of risk. If a portion of this proposal does not meet the needs of Home Depot USA Inc or if those needs have changed, Kleinfelder will consider appropriate modifications, subject to the standards of care to which we adhere as professionals. Modifications such as changes in scope, methodology. scheduling, and contract terms may result in changes to the risks assumed by Home Depot USA Inc. as well as adjustments to our fees. This workplan has been prepared to evaluate potential soil and/or groundwater contamination on the proposed Home Depot store site (Plate 1). It is suspected that contamination may be present due to a documented fuel release (currently undergoing investigation) at the Unocal Service Station located at March Lane and Interstate Highway 5 (Plate 2). Groundwater in the vicinity of the site is anticipated to occur at a depth of 7 to 10 feet below grade with a flow direction to the northwest. It is Kleinfelder's understanding that Home Depot USA Inc. does not wish to install permanent wells at the project site. It is also Kleinfeldet's understanding that the proposed construction may involve excavation of utility trenches at to depths at which groundwater may be encountered. If dewatering of trenches is required. it may be necessary to evaluate disposal options if groundwater at the site has been impacted by the nearby Unocal Service Station. SCOPE OF WORK Task 1 -- Drilling Permit Submittal and Pre-Mobilization Preparation Kleinfelder proposes to install three temporary wells on site as shown on Plate 2. The San Joaquin County Public Health Services Department Environmental Health Division (PHS/EHD) requires approval of a workplan, application for a boring permit, and payment of fees prior to conducting assessment activities. It is assumed that this workplan will suffice to obtain approval from the PHS/EHD. Kleinfelder will prepare boring permit applications for submittal to PHS/EHD. The permits and workplan must be approved prior to conducting any drilling or sampling. 20-YP9.022/2019PI56 Page A-I Copyright 1999 Kleinfelder, Inc. May 18, 1999 .