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PES Environmental,Inc. Ms. Margaret Lagorio November 15, 2000 Page 2 of 3 identified by Accessory Parcel Number 177-020-09. The properties are bounded on the east by South Airport Way, on the south by Ralph Avenue and Perlman Drive (southeast), on the north by Duck Creek, and on the west by Duck Creek and the Union Pacific railroad tracks. The subject properties are vacant and undeveloped at this time, with the exception of a portion of the Fitch property, which contains a private residence and associated structures. The properties have historically been used for agricultural purposes. Industrial facilities present near the subject properties include the Applied Aerospace Structures located at 3437 South Airport Way, approximately '/a-mile south of the subject property and the Western Pacific Industrial Park. PROPOSED SCOPE OF WORK The Scope of Work for this investigation includes the following activities: (1) prefield activities; (2) collection of grab groundwater samples; and (3) laboratory analysis of the groundwater samples. These activities are described in the following sections. Prefield Activities A site-specific Health and Safety Plan prepared by PFS for the proposed sampling activities is provided as an attachment to this workplan. Prior to drilling, PES will contract a private underground utility locating service to perform a geophysical survey to clear the proposed sampling locations of subsurface utilities. Underground Service Alert will also be contacted to schedule visits by public and private utility companies. Each company will locate its utility with the aid of maps, and the locating service will verify and mark these locations. Grab Groundwater Sampling PFS will collect grab groundwater samples from borings advanced along the southern property boundaries of the two properties at the seven proposed locations shown on Plate 2. Grab groundwater samples will be collected from below saturated depths. The groundwater sampling methodologies are described below. The soil borings will be drilled using a direct push sampling system. Soil samples will be collected by simultaneously driving two nested sampling rods. The smaller inner rod will be used for collecting the soil samples and the larger outer rod will serve as a temporary drive casing. As the rods are advanced by percussion hammer, soil will be driven into a 1 1/4-inch diameter, 3-foot long sampling tube attached to the inner rods. 58901201 WOOL.doc