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File No. 20-3978-0 L W22 A■ KLEINFELDER February 6, 1997 ATTACHMENT A SCOPE OF WORK ADDITIONAL SEPTIC SYSTEM SAMPLING AND ANALYSIS FORMER SPRECKELS SUGAR PLANT 18800 S. SPRECKELS ROAD MANTECA, CALIFORNIA INTRODUCTION Kleinfelder is pleased to present this proposal to Atherton Kirk Development. This proposal was developed after correspondence with Messrs. Mike Atherton of Atherton Kirk Development and Ron Cheek of R.L.C. Associates, using Kleinfelder's current understanding of the site conditions, and is a preliminary understanding of your desires and requirements. We have prepared this proposal based on information usually requested in a workplan by the San Joaquin County Public Health Services Department, Environmental Health Division (PHS/EHD) and the State of California Regional Water Quality Control Board Central Valley Office (RWQCB). Kleinfelder is committed to providing a high level of service to its clients, commensurate with their wants and needs. If a portion of this proposal does not meet the needs of the client, or if those needs have changed, Kleinfelder stands ready to 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 and conditions may result in changes to the risks assumed by the client, as well as adjustments to our fees. We look forward to the opportunity to serve you. BACKGROUND Kleinfelder has conducted a Phase I Environmental Site Assessment (ESA) of the property known as the Former Spreckels Sugar Plant in Manteca, California (Kleinfelder Job No. 20- 3978-O1.P01, dated October 18, 1996). Plate 1 shows the location of the Spreckels property. At least 5 current or former septic systems are located on site. The purpose of the septic systems was to receive domestic sewage. It is common to find that unauthorized or unintended discharge to septic systems of hazardous materials or petroleum products has occurred. As part of the ESA conducted for the Spreckels property, recommendations were made for further assessment of several areas of potential soil and/or groundwater contamination. These included evaluation of the septic systems on site (recommendation 7). 20-3978-O1.W22207PF098 Page l of 01997, Kleinfelder, Inc.