Laserfiche WebLink
Page 2 <br /> Chevron Products Company June l 2001 <br /> Chevron Station#9-8264 3775 TBoulevard Trac California <br /> i <br /> i The specific scope of work is discussed below: <br /> s CPT Borings. Six CPT borings will be advancedin the general locations shown in <br /> Figure 2. These borings will be advanced to approximately 30 feet bgs to assess soil <br /> stratigraphy in the upper water-bearing zone to the south of the site in the easement <br /> (two borings), and to the east and northwest of the. site, in and-across Tracy Boulevard <br /> (four borings). <br /> Soil and Groundwater Sampling. Immediately adjacent to each CPT borehole, a <br /> second direct-push borehole will be advanced to specifically collect discrete soil and <br /> groundwater samples. Depths of the discrete soil and groundwater samples will be <br /> determined from the CPT logs in the field. Soil samples will be collected only from the <br /> two borings located to the south of the site in the easement, above the first encountered <br /> groundwater (approximately 10 feet bgs). One groundwater sample will be collected <br /> from each of the six borings in the first encountered water-bearing zone. Additional <br /> deeper groundwater samples may be collected based on the CPT data. <br /> Soil and groundwater samples will be analyzed for TPHd and TPHg by EPA Method <br /> 8015, benzene, toluene, ethylbenzene, xylenes (BTEX), and the fuel oxygenates MtBE, <br /> di-isopropyl ether (DIPE), tertiary amyl methyl ether (TAME), ethyl tertiary butyl ether. <br /> (EtBE), tertiary butyl alcohol (TBA), ethyl dibromide (EDB), 1;2 dichloroethane (1,2- <br /> DCA), ethanol, and methanol by EPA Method 8260B. <br /> Proposed field and laboratory procedures are presented as Attachment B. <br /> SCHEDULE <br /> Figure 3 provides a graphic proposed schedule of the work described above. This <br /> schedule includes review and comment by the San Joaquin County Public Health <br /> Department (SJPHD) and estimated duration for permitting required with the SJPHD <br /> and the City of Tracy. <br /> lAChevron1982641REP0RTSICPT WP Rev A.doc <br />