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Phase II Environmental Site Assessment Report Yosemite Senior Housing 309 W.Yosemite Avenue and 105 Sycamore Avenue APNs 217-210-100 and 217-210-110 Page 2 3.2 SITE CONDITIONS Site topography was generally flat with the surface conditions on the western portion of the Site as concrete and the eastern portion of the Site as asphalt. Some cracks were observed within the asphalt and concrete surfaces. 3.3 DIRECT PUSH BORING PROCEDURES Condor geologist, Luke Castle (CA Professional Geologist number 9945) observed drilling and collected samples at the Site on May 1 and May 2, 2024. All drilling was conducted by TEG Norcal, a California licensed drilling contractor(C57-706568),under Permit#WP0045457 issued by EHD. Two soil and groundwater boring locations(DP-I and DP-2)were chosen along the southern portion of the Site, one beneath the former print shop in the southwest corner and one in the southeast corner. One soil boring(DP-3)was advanced in the downgradient direction in the northeast corner(Figure 3,Appendix A). DP-1 was advanced to 28 feet below ground surface (bgs), DP-2 was advanced to 32 feet bgs, and DP-3 was advanced to 20 feet bgs. Soil samples were collected from the capillary fringe (approximately 27 feet bgs) at DP-1, and at 20 feet bgs at DP-2 and DP-3. A photoionization detector (PID) was used to screen soil samples for VOCs. Groundwater samples were collected from DP-1 and DP-2. No groundwater was encountered at boring DP-3 due to auger refusal. The direct push borings were advanced using a Geoprobe 9635 direct push drilling rig equipped with a 2.5- inch-diameter conical bit,which was driven using a hydraulic hammer. Drilling at each location continued until the stiffness of the soil prevented further advancement of the drilling rods (auger refusal) or groundwater was encountered. Upon completion of the borings and sampling, all borings were grouted to the ground surface with neat cement grout. Continuous core soil samples were collected from the borings with a 1.75-inch outside diameter(O.D.),4-foot-long core barrel fitted with a clean,single use,polyethylene liner. During the sampling, the core barrel was driven in 4-foot intervals. The sample liner was extracted from the core barrel and used for geological logging and field observations. The soil samples were logged in general accordance with the Unified Soil Classification System(USCS). Geological logs were prepared containing field observations including soil type,PID measurements, and the presence of staining or odor, Appendix D. Portions of the soil samples were placed in polyethylene bags and checked with a PID for the presence of VOCs. Soil samples were collected from the borings for laboratory analyses based on field observations and PID measurements. The soil cuttings were placed in 5-gallon buckets and Zip-lock bags, sealed, labeled, and stored in Condor's storage warehouse pending results of laboratory analyses. Each soil sample collected for possible laboratory analyses was cut from the liners. The liners were sealed at the ends with Teflon® sheeting and capped.Groundwater samples were collected using dedicated tubing attached to a check valve. Groundwater and soil samples were labeled, placed in chilled coolers, and transported under chain-of-custody procedures to Enthalpy Analytical. Sample depths were labeled on the sample identification in feet bgs. For example, sample DP-1-27 was collected at soil boring DP-1 from a depth of 27 feet bgs. 3.3.1 Site Conditions and Observations Three(3)borings were advanced to various depths throughout the Site; soil descriptions were annotated on boring logs and soil layers were identified in general accordance to the USCS. DP-1 was advanced to 28 feet bgs; the upper 3-inches was a concrete surface overlying fine to medium coarse sands (SP/SW)to 22 feet___bgs_T Pan clay(CL)was countered from 22 feet to 27 feet bgs,which overlain a fine to medium coarse 4% Nkiw to CONDOR