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moil and Groundwater Investigation Work Plan Raymond Investment Corporation February 19,2004 Page 2 I.r the laboratory analyses were described by Condor in the Underground Storage Tank Removal Report dated May 14, 2003. The laboratory results are shown on Figure 3 in Appendix A. 4 In a letter dated November 4, 2003, to Ms. Beverly Garcia, Ms. Victoria McCartney of the SJCEHD directed Raymond Investment Corporation to submit a work plan to investigate the lateral and vertical LM extent of contamination at the site. Condor prepared this work plan at the request of Ms. Garcia in response to that letter. 3.0 DIRECT PUSH BORING FIELD PROCEDURES L This section includes a description of the site preparation, direct push boring procedures, and laboratory ' analyses. 3.1 SITE PREPARATION Condor will complete soil boring permit applications and obtain the required permits from the SJCEHD prior to the fieldwork. One proposed boring location is on the adjacent property to the south of the former • UST location. Condor will contact the owner of the adjacent property and attempt to obtain access to the property for the purpose of advancing one direct push boring on that property. Condor will coordinate all L" field activities with the SJCEHD and the owner of the adjacent property if site access is granted. The proposed boring location will be marked with white paint and Underground Service Alert (USA) will be notified at least 48 hours in advance of the fieldwork to locate and identify underground utilities in and near the work area. Because companies contacted by USA may not identify utilities past private property lines ? and into the site, however, it is the responsibility of the property owner to identify any site utilities. �+ 3.2 DIRECT PUSH BORING PROCEDURES Prior to commencement of fieldwork, a tailgate safety meeting will be held and a site-specific Health and 4. Safety Plan will be discussed with, and presented to, all field personnel for their signatures. Four direct push borings will be advanced around the former UST excavation. Six direct push borings will be advanced in the vicinity the former location of the diesel filter and piping. The proposed boring locations are shown on Figure 4 in Appendix A. All of the borings will be advanced to first encountered groundwater, anticipated to be at a depth of approximately 45 feet bgs. La The direct push borings will be hydraulically advanced using a 2-inch diameter conical bit. The bit and associated push rods will be thoroughly cleaned before each boring 1s advanced using laboratory-grade, , non-phosphate detergent and deionized water and double rinsed with dcionizcd water. Upon completion of the borings and sampling, the borings will be grouted with neat cement. i.. Continuous core soil samples will be collected from the borings with a 1.75-inch O.D., 5-foot long core barrel fitted with a clean, single use, polyethylene liner. The soil sampling equipment will be cleaned prior i" to collecting the samples using laboratory-grade, non-phosphate detergent and deionized water and double rinsed with dcionized water. During the sampling, the core barrel will be driven in 5-foot intervals. The sample liner will be extracted from the core barrel and used for geological logging and field observations. The soil samples will be logged according to the Unified Soil Classification System (USCS). Portions of the soil samples will be placed in polyethylene bags and checked with a photoionization detector (PID) for the presence of volatile hydrocarbons. Geological logs will be prepared containing field observations including soil type, PID measurements, and the presence of staining or odor. Soil samples will be collected 4 4M %qk. • i, CONDOR LM