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WORK PLAN <br /> FOR GROUND WATER WELL INSTALLATION AND MONITORING <br /> PORT OF STOCKTON-ROUGH AND READY ISLAND,CALIFORNIA <br /> As required by the Occupational Health and Safety Administration (OSHA) 29 CFR <br /> 1910.120, Hazardous Waste Operations and Emergency Responses, a site Health and <br /> Safety Plan (HSP) will be prepared for use while conducting the proposed field <br /> sampling activities. The HSP will be read and approved by the Project Manager, a <br /> Quality Assurance Reviewer, and the On-site Safety Officers of all subcontractors <br /> working at the Site. <br /> 3.2 TASK 2: MONITOR WELL INSTALLATION <br /> 3.2.1 Monitor Well Location <br /> Ten monitor wells will be installed at five locations shown on Figure 2. Each location <br /> will have two wells installed, screened in the shallow peat and deeper sand water <br /> bearing zones (e.g. MW-1s and MW-1p). The purpose of the monitor wells is to enable <br /> collection of ground water samples from the saturated dredge sediments, peat layer, <br /> and underlying sandy zone. The rationale for monitor well locations and general <br /> construction details are provided below. <br /> Each location has two wells because one will monitor the peat layer (these wells are <br /> labelled with a p) and one will monitor the sand layer (these are labelled with an s). <br /> • MW-1s, MW-1p: These two wells are located at the northwestern corner of MO-1. <br /> IS MW-2s, MW-2p: These two wells are located near the southwestern corner of <br /> MO-1. <br /> • MW-3s, MW-3p: These two wells are located along the southern margin of MO-1, <br /> and are located near the confluence of the San Joaquin River and Burris Cutoff. <br /> • MW-4s, MW-4pp: These two wells are located along the northern margin of MO- <br /> 1, to the northeast of MW-3. <br /> • MW-5s, MW-5p: These two wells are located at the eastern most point of MO-1. <br /> Each monitor well will be constructed with a dedicated borehole, as described in the <br /> following section. The monitor wells at each location will be approximately five feet <br /> apart. The following table summarizes the zones to be monitored at each location. <br /> Monitor Well Geologic Unit to <br /> ID be Screened <br /> Peat Sand <br /> MW-1s X <br /> MW-1 X <br /> MW-2s X <br /> MW-2p X <br /> September 2014 8 Environmental Risk Services �S <br /> Corporation %_ <br />