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. 1 <br /> S ECOR <br /> Ms. Vicky McCartney <br /> March 29, 2004 <br /> Page 5 <br /> the stratigraphy and potential dissolved phase contamination in deeper zones near MW-2R and VW- <br /> 1, which have historically contained higher concentrations of TBA than other on-Site monitoring <br /> wells. Location CPT-2 is intended to evaluate stratigraphy and contamination in deeper zones near <br /> MW-91 which has historically contained higher concentrations of TPHg and MtBE than other on-Site <br /> monitoring wells. The specific scope of work is discussed below: <br /> • Health and Safety Plan (HASP). As required by the Occupational Health and <br /> Safety Administration (OSHA) Standard "Hazardous Waste Operations and <br /> Emergency Response" guidelines (29 CFR 1910.120), and by the California <br /> Occupational Health and Safety Administration (Cal-OSHA) "Hazardous Waste <br /> Operations and Emergency Response" guidelines (CCR Title 8, Section 5192), <br /> SECOR will update the current site-specific HASP prior to the commencement <br /> of fieldwork. The HASP will be reviewed by the field staff and contractors before <br /> beginning field operations at the site. <br /> • Permitting. Permits for the drilling of the CPT and HydroPunch(D soil borings <br /> will be obtained from the SJCEHD. <br /> • Soil Borings. Two CPT borings will be advanced on-site as shown on Figure 1. <br /> ,Both borings will be advanced to a maximum depth of 120 feet bgs or until <br /> :refusal is encountered. Subsurface stratigraphy will be characterized using a <br /> 4CPT drill rig equipped with a piezocone penetrometer system. Based on the <br /> ..results of the CPT tests, one to three grab groundwater sample depth intervals <br /> will be identified for each CPT location. Each grab groundwater sample will be <br /> collected from a separate borehole, which will be advanced within 5 to 10 feet of <br /> the original CPT boring. The groundwater samples will be collected by <br /> advancing a HydroPunch(D or equivalent sampler to the desired depth, retracting <br /> the drive rod to expose the expendable screen, waiting an appropriate time <br /> interval to allow formation water to enter the sampler, and then lowering a clean <br /> disposable or stainless steel bailer into the formation water that has entered the <br /> sampler. The bailer will then be retrieved from the boring, and the sample will <br /> be decanted directly into clean, laboratory supplied glassware. Field procedures <br /> for direct push drilling and HydroPunch@ groundwater sample collection are <br /> provided as Attachment 2. <br /> • Grab Groundwater Sampling/Analysis. Grab groundwater samples will be <br /> analyzed for TPHd by EPA Method 8015M; and TPHg, BTEX, MtBE, .DIPE, <br /> TAME, EtBE, TBA, ethanol, and lead scavengers 1,2-DCA, and EDB by EPA <br /> Method 82608 (single run). <br /> • Soil and Water Disposal. Soil cuttings and purge/rinsate water generated <br /> during CPT and direct push drilling will temporarily be stored. in Department of <br /> Transportation (DOT)-approved 55-gallon steel drums on-site pending <br /> characterization and disposal. The drums containing soil and rinsate/purge <br /> water will be removed by Filter Recycling Services (FRS) and transported to their <br /> facility for treatment/reuse. The drums will be stored on-site for approximately 4 <br /> to 8 weeks. <br /> 1:1ConocoPhiIIips1111931Work Plan$\IRAP&Off-Site Asmt WP Addendum v 2.doc SECOR Intemational Incorporated <br />