ARCHIVED REPORTS_XR0008342 - Laserfiche WebLink

Home Browse Search

Remedial Well and Soil Vapor Extraction System Installation Report 4 Ranch Market 23569 South Santa Fe Road Riverbank CA November 27 2002 • In October 2001, SECOR oversaw the )Installation of CPT borings CPT-1, CPT- 2, and CPT-3 to further define the lithology and vertical distribution of gasoline range petroleum hydrocarbons dissolved in groundwater between the former UST pit and DW-3 and DW-4, and east of the site across South Santa Fe Road (Figure 2) Based on analytical results of water samples collected from the three CPT borings, vertical distribution of gasoline range petroleum hydrocarbons dissolved in groundwater between the former UST pit and DW-3 and DW-4, and east of the site across South Santa Fe Road, were defined 3.0 PERMITTING/SITE-SPECIFIC HEALTH AND SAFETY PLAN Two well installation permits were obtained from the SJCEHD for Parcel Numbers 249-070- 01 i and 249-070-012 Copies of the well permits are included in Appendix A Underground Service Alert was contacted at least 48 hours prior to conducting the fieldwork As required by the Occupational Safety and Health Adrrunistration (OSHA) Standard "Hazardous Waste Operations and Emergency Response" guidelines (29 CFR 1910 120), a site-specific Health and Safety Plan was reviewed and signed by all SECOR personnel and subcontractors prior to commencement of work at the Site 4.0 SOIL BORINGS, SAMPLING, AND WELL INSTALLATION 4.1 Soil Borings Between July 8 and 15, 2002, SECOR supervised the installation of 20 ozone sparge wells (S- 1 through S-20) and four vapor extraction wells (V-7 through V-10) to depths ranging from approximately 30 to 45 feet below ground surface (bgs) using a truck-mounted HSA drill rig equipped with 8-inch outside-diameter (O D ) augers Well completion details are presented on Table 2 The locations of the 24 new remediation wells are shown on Figure 3 Soil samples were collected from the ozone sparge wells at selected depth intervals for lithologic description, field photo-ionization detector(PID) measurements, and to retain soil samples for laboratory analysis In well S-7, samples were collected at 20, 25, 30, 35, and 40 feet bgs In wells S-12, S-13, and S-17, samples were collected at 20, 25, 30, and 35 feet bgs In the remaining wells, samples were collected at 30 and 35 feet bgs Samples were not collected from ozone sparge wells S-18, S-19, and S-20 All down-hole drilling equipment (augers, push rods, etc ) were steamed cleaned between each soil boring and the soil sampling equipment was cleaned and rinsed following collection of each soil sample The drill cuttings were placed on visqueen and stored at the Site pending characterization The auger steam cleaning water was retained and stored in six 55-gallon drums pending offsite disposal I\Ranch Market-RiverbanklReports\RB-Remed Well Install doe SECOR International Incorporated