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i KLE/NFELOER �� 6.yt haple.N9ISa.:ri 2 SOIL AND GROUNDWATER ASSESSMENT Kleinfelder understands the soil and groundwater assessment must comply with the RWQCB guidelines and address a description of the geology and hydrogeology of the area, groundwater quality at the site, and assess the potential for the proposed discharge to degrade groundwater quality. The proposed scope of services is as follows: 2.1 PRE-FIELD AND PERMITTING ACTIVITIES Prior to field mobilization, Kleinfelder will obtain boring permits from San Joaquin County Environmental Health Department (SJCEHD) and prepare a site-specific health and safety plan. Upon receipt of the boring permits (typically a two to three week turnaround from SJCEHD), Kleinfelder will schedule the field work with the drilling subcontractor and notify the City of Tracy. As part of the pre-field activities, Kleinfelder will conduct a site visit to evaluate site conditions and equipment access. The proposed groundwater sample locations will be marked in white paint and/or staked. Kleinfelder will require the boring contractor to contact Underground Service Alert 48 hours prior to conducting field work to notify local utilities of the proposed subsurface assessment. Kleinfelder requests that the City of Tracy provide available as-built information regarding the locations of onsite subsurface utilities for its use in this activity as applicable. Kleinfelder requests that the City of Tracy make arrangements to provide site access for work during regular business hours to complete the proposed monitoring wells. 2.2 UNDOCUMENTED SOIL STOCKPILE ASSESSMENT Soil Stockpiles Kleinfelder estimates that approximately 9,500 cubic yards of soil are present on the site (Plate 3). This estimate was calculated by first reviewing aerial photos of the waste piles present across the parcel, and counting approximately 1,056 piles. It was 128328/SAC14R0267 Page 3 of 11 July 12, 2013 Copyright 2013 Kleinfelder Revision 2-February 14,2014