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Sacramento Insulation Contractors Project No. EOC-96-028 { i Goal and Technical Approach. Ms. Ginny Spencer, representing SIC, has indicated to EOC that the primary goal of the services proposed in this workplan should be to obtain regulatory"site closure" or a recommendation of "no further action" by the local health department for the unauthorized release of petroleum no reported for the property. In pursuit of this goal, EOC suggested the advancement of soil borings and the collection and analysis of soil and groundwater samples on the site. Ms. Spencer and Mr. Harlan Knoll, PHS specialist assigned to the site, concurred with the proposal to advance the borings and collected soil and groundwater samples,but not install groundwater monitoring wells. SCOPE OF SERVICES The scope of services required to accomplish the stated-goal is detailed below: Task I - Prefeld Activities. These activities will be performed prior to beginning field activities. Prepare a site specific health and safety plan. This plan will be reviewed by all field personnel before field work begins. Obtain a well permit from the PHS for the advancement of 5 Hydropunch borings. The permit will be prepared and submitted in accordance with the applicable regulations. An "Application for Well/Pump Permit" and check are attached for review and action. • Notify Underground Service Alert of the intent to drill at least 48 hours prior to beginning field work. Task II -Hydropunch Advancement and Groundwater Sampling. .This summarizes the advancement of the proposed borings. • Excavate 5 exploratory borings using a hollow stem auger drill rig (services to be 4 performed by West Hazmat Drilling). The proposed locations are presented on the Site Plan, Figure 2. Total depth of each boring is estimated to be 50 feet bgs. r` Collect soil samples from each boring at approximate 5-foot intervals (approximately 10 soil samples per boring). The criteria for the collection and analysis of soil samples will be based on observed conditions such as lithologic changes, soil staining or petroleum hydrocarbon odors, the capillary zone, and depth below groundwater. The soil samples will be collected using a split spoon sampler(2-3/8-inch inside diameter and 3-inch outside diameter) and may or may not be equipped with brass or stainless steel sleeves. Each sleeve.or a laboratory prepared jar will be capped, labeled, and transported following chain-of-custody procedures to a California state certified on site mobile laboratory for analysis. • Analyze selected soil samples for TPH quantified as gasoline (DHS-TPH Method). ' EnvirOmega Consultants 2 November 8, 1996 1 }