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.11MGER5 OESKi1FR5TgN5LlTNIfS starting at 10 ft bgs Soil samples will be collected with a split spoon sampler lined with brass ' sleeves All samples will be screened in the field using a photoionization detector (PID) A maximum of three soil samples will be submitted for laboratory analysis Samples submitted for analysis will be chosen based on PID, visual, and olfactory observations If there is no ' evidence of contamination, one sample, collected from dust above the water table, will be submitted for analysis The brass liners containing samples for chemical analysis will be capped with Teflon' sheeting and plastic caps The samples will be placed in plastic bags and stored on ice at a temperature ' of approximately 4°C for transport to an analytical laboratory A thermometer will be kept in the cooler with the samples The remaining soil will be described following the Unified Soil ' Classification System (UCSC) under the direction of a California Registered Geologist The monitor well will be constructed of 4-inch diameter Schedule 40 PVC casing A 20-foot section of 0 010-inch slotted PVC screen will be used The screen will extend approximately 5 feet above the water table A sand pack (Lonestar 1C or equivalent) will be placed from the bottom of the bore hole to approximately 2 feet above the top of the screen A 2- to 3-foot bentonite seal will placed above the sand pack After the bentonite seal has hydrated, the Nremaining annular space will be grouted to the surface with a bentonite/cement grout. A traffic grade flush mount utility box will be installed over the monitor well A locking water tight cap will be installed on the monitor well The monitor well will be developed by pumping the well until the water is free of sediment and a minimum of five well casing volumes have been removed Prior to pumping any sediment present in the bottom of the well will be removed with a bailer The monitor well will only be swabbed if fine grained sediment has smeared along the bore hole and is interfering with well yield. The top-of-casing elevation will be surveyed relative to other wells at the site. I2.3.2 Soil Boris Soil boring BH-13 will be located on the north side of Washington Street approximately 15 feet east of monitor well MW-2A (see Figure 1) Following the removal of a concrete core from the sidewalk, the bore hole will be advanced with a hand auger until native material is encountered and there is little danger of intercepting underground utilities (approximately 5 feet below ground surface [bgs]) The boring will be advanced with a truck mounted hollow stem . auger ng to 60 ft below ground surface (bgs) Soil samples will be collected at 5-foot intervals starting at 10 ft bgs Soil samples will be collected with a split spoon sampler lined with brass LIPROJECTMSANIOQWSAWP 5