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File No. 20-3978-01.P02 KLEINFELDER November 12, 1996 ATTACHMENT A SCOPE OF WORK POND BOTTOM SOIL SAMPLING AND ANALYSIS (PHASE I ESA RECOMMENDATION NUMBER 5) FORMER SPRECKELS SUGAR PLANT 18800 S. SPRECKELS ROAD MANTECA, CALIFORNIA 20-3978-01.1`02 November 12, 1996 INTRODUCTION The Manteca Sugar Factory was constructed in 1917 and has been operated by Spreckels Sugar Company (Spreckels) since its construction. The Spreckels factory used above grade ponds to dispose of waste water, waste lime, and tare dirt. Another above grade pond was used to dry beet pulp prior to the installation of a mechanical dryer in 1959. Additionally, there are two small overflow ponds (referred to as the finger ponds) on site. Several of the waste water ponds were decommissioned in the late 1970's or early 1980's due to the construction of the adjacent Highway 120 bypass. Most of the material was used as fill on the Spreckels site. The former waste water pond levees were bulldozed over the pond bottoms. There are also reports that the sludge from the pond bottoms was periodically removed and spread on site. The accumulated pond bottom sludge may contain elevated concentrations of metals or other hazardous substances. This proposal presents a scope of work for collecting soil samples from the existing and historical pond bottoms, and at representative random locations on the Spreckels site. The sampling of random locations on site is intended to address the pond bottom sludge reportedly spread throughout the site. SCOPE OF SERVICES Kleinfelder proposes to collect soil samples from the bottom of the existing and historical pond locations, and from representative random locations on the Spreckels site. The soil samples will be collected using a hand auger and slide hammer sampler. The samples will be collected at the surface and a shallow depths of three to five feet below grade. 20-3978-OI.P02/MP9601321WR960015 Page I of 01996, Kleinfelder, Inc.