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• Contact facility personnel to coordinate an on-site Inspection and interview, • Visit site to review on-site records, determine work constraints, sketch scaled site iplan and mark drilling locations for underground utility clearance ' Meet with the regulatory agencies and review project file, If necessary 2 1 2 Health and Safety Pian Prior to mobilizing for field activities, a site health and safety plan will be prepared The health ' and safety plan will Include safety procedures for work to be performed, chemical hazard Information, site safety officers, and preferred medical emergency locations 213 Permits ' To perform the proposed scope of work, a drilling permit will be obtained from PHS-EHD Since drilling will be conducted within the South Moffat Boulevard right-of-way (SB-11), an ' encroachment permit from the City of Manteca will also be obtained To access the proposed drilling locations on the Recycle Center property to the east of the site, an access authorization from the property owner will be secured At least 48 hours prior to drilling, Underground Service Alert(USA)will be notified to perform a routine utility clearance inspection 22 GeoprobeTm Soil and Groundwater Grab Sampling To define the lateral and vertical extent of Impacted soil and to evaluate the nature and extent of Impacted groundwater, sod and groundwater grab samples will be collected for analysis from eleven (11) locations (Figure 2) using a GeoprobeT"" 5400 Direct-Push Technology drilling rig These proposed sample locations are positioned within and around the known source of petroleum hydrocarbons (I e , the former UST excavation) One GeoprobeTm boring (SB-1) will be positioned over the former northern weed oil UST and sampled every five feet to a depth of 20 feet bgs to define the vertical extent of Impacted soil Four GeoprobeTm borings (SB-2,3, 4, and 5) will be located around the perimeter of the former UST excavation and sampled every five feet to a depth of 15 feet bgs to determine the lateral extent of Impacted soil Six GeoprobeTm borings (SB-6,7,8,9,10, and 11) will be positioned at the expected outer edges of the Impacted soil and groundwater plumes The proposed sampling and analysis plan for each of the sample locations Is summarized in Table 1 ' Work Plan Environmental Site Investigation Ramage Environmental . 392 South Moffat Blvd,Manteca California June 18 1997 4