ARCHIVED REPORTS_REPORT SUMMARIZING INSTALL OF MONITORING WELLS MW4,MW5,MW7,MW8 & SOIL BORING RDM1 & 4TH QTR 2013 GROUNDWATER SAMPLING

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Ms. Angela Lee Huntbrook Holdings,LLC February 12, 2014 Page 5 The additional soil and groundwater assessment activities were performed between October 7 and December 3, 2013, in accordance with the field methods and procedures described in Enclosure D. The drilling and logging was performed under the supervision of a Califomia-licensed professional geologist. Pre-Intrusive Field Work Activities RDM completed the following tasks prior to performing any intrusive work at the site: • Underground Utility Location: Underground Service Alert (USA) North was notified on October 1, 2013 (USA Ticket No. 0385879) to allow USA North's member subscribers' adequate time to mark the locations of their underground utilities. In addition to notifying USA North, on October 4, 2013, RDM contracted a private utility locator, Cruz Brothers Locating of Soquel, California, to mark the locations of other potential subsurface utilities in the vicinity of • the proposed drilling locations;those not owned by the USA North member subscribers. • Site Health and Safety Plan: A site specific health and safety plan (SHSP) was prepared to identify potential site hazards and appropriate personal protective equipment (PPE), provide emergency contact information, and directions to nearest hospital or treatment facility. A copy of the SHSP was maintained on-site during fieldwork and daily tailgate meetings were conducted each morning prior to commencing with work. • Permits: Monitoring well construction permits were obtained from the San Joaquin County Environmental Health Department (SJCEHD) for the four monitoring wells (MW-4, MW-6, MW-7 and MW-8), the CPT boring (CPT-1), and the soil boring (RDM-1). Copies of the permits were maintained on-site during drilling and are included in Enclosure E. r • Concrete Coring: On October 8, 2013,Cal West Concrete Cutting of Manteca, California,was conducted concrete coring at two locations: one 4-inch diameter hole for boring RDM-1, and one 12-inch diameter hole for monitoring well MW-7. 40 Installation of Monitorinu Wells MW4,MW-6,MW-7 and MW-8 Between October 7 and October 9, 2013, RDM supervised the installation of four groundwater monitoring wells (MW-4, MW-6, MW-7 and MW-8). Monitoring well MW-8 was installed in the western portion of the subject property and the remaining three monitoring wells were installed on off- site properties to the north, east and south of the subject property. The purpose for the monitoring wells is to further assess potential petroleum hydrocarbon impacts to groundwater, groundwater flow direction, and groundwater hydraulic gradient of the water-table aquifer beneath the subject property. The locations of the monitoring wells are illustrated on Figure 2. The monitoring wells were installed by All Well Abandonment (C-57 License No. 848359) of Rancho Cordova, California, using a track- mounted, CME-75, limited access, drill rig equipped with 8-inch diameter hollow-stem augers. Monitoring wells MW-4, MW-6 and MW-7 were installed to a depth of 65 fbgs and monitoring well MW-8 was installed to a depth of 60 fbgs. The wells were drilled and constructed under the supervision of a California-licensed professional geologist.