ARCHIVED REPORTS_XR0005143 - Laserfiche WebLink

Home Browse Search

4.2 Proposed Vapor Extraction System (VES) GeoAudit will install an internal combustion (IC) unit at the site The specific IC unit will be chosen by representatives of Chapin Bros , Inc As indicated by the vapor extraction test, soil conditions at the site are conducive to rapid removal of high concentrations of ' petroleum hydrocarbons by this type of system GeoAudit proposes to extract vapors from both VE-1 and VE-2 Both wells can be easily ' piped and fitted to the VES By utilizing VE-2 as an extraction well, 'Ae hope to remove hydrocarbon vapors from impacted soil within the immediate area beneath Buena Vista Avenue and, eventually, from the area near NIW-3 4.3 Permitting Permitting will be necessary for any permanent or semi-permanent SVE unit It is our understanding that RSI maintains operational permits on the SAVE system However, GeoAudit also maintains a vaiious locations permit for the VACLEEN 1000, an IC-engine based SVE unit The VACLEEN permit was obtained in 1991 from the San Joaquin Valley Unified Air Pollution Contiol District (SJVUAPCD) Infoimation on the VACLEEN is included in Appendix I 4.4 System Location and Design MThe SVE will be located on the west side of the propeity in a recessed area along the western wall of the building A natuial gas meter is located in this area, and access space will have to be made for P G & E Althougli this is the piefeiied location, local permitting Wray not allow the installation of the unit in this are because of the gas meter Therefore an alternate location for the unit would be inside a gate, along the east wail of the building The piefeiied location will iequne a minimum of piping to connect VE-1 and VE-2 and, if desired at a later date, VW-1 The alteinate location along the east wall of the building will require more piping and trenching At either location, the unit should be fenced inside ' a gated, locked enclosure Two-inch PVC piping will be installed from VE-1 and VE-2 to the SVE unit dropout drum The piping will carry hydrocarbon vapors from the well heads to the SVE unit A PVC ball valve will be installed in each line so vapors can be dia%-Nn from each «ell independently, if ' necessary All PVCwill be installed below ground surface, in a shallow trench to the fenced enclosure ' From the enclosure to the diop-out dium, the line will be installed above-ground A plan of the proposed piping and VES unit location is illustrated in Figure 5 1 G-1-8-1 A.3.1 Se,".». Inc 10 CHAPI N FRPI3 9LSC 94 I^»�