Laserfiche WebLink
Metadata
Document management portal powered by Laserfiche WebLink 9 © 1998-2015 Laserfiche. All rights reserved.
2.3 TASK II- DETERMINATION OF GROUNDWATER CHEMISTRY <br />' In order to procure a waste discharge permit from the Regional Water Quality Control Board and <br /> to ensure that the proposed air stripper, activated carbon system, and vapor treatment system will <br /> not be affected by water hardness, minerals, or chlorinated compounds, the chemistry of the <br /> groundwater was determined. Groundwater samples from the wells onsite were analyzed for the <br /> parameters indicated in Table 4. The results of the groundwater sampling for TPH (as gasoline) <br /> and BTEX is included in the cumulative summary of concentrations of petroleum hydrocarbons <br /> in the groundwater (Table 5) The concentrations of inorganic compounds (general minerals, <br /> priority pollutant metals, and major anions) are shown in Table 6. Isoconcentration diagrams for <br />' TPH gasoline and benzene (µg/L) in the groundwater(based on January and May 1991 results) <br /> are presented as Figures 11, 12, 13, and 14 <br /> Copies of the laboratory results for groundwater samples collected in May 1991 are included as <br /> Appendix C. <br />' 2.4 TASK III - GROUNDWATER TREATMENT SYSTEM PERMITTING AND <br /> FINAL DESIGN <br /> The agencies from whom permits or authorization are expected to be required for operation of <br /> the groundwater treatment system are as follows <br /> 1. Central Valley Regional Water Quality Control Board (waste discharge <br /> permit for injection of treated water into the injection wells, authority to <br /> proceed,NPDES permit) <br /> 2 San Joaquin County Public Health Services (system design) <br />' 3 San Joaquin County Air Pollution Control District (authority to construct <br /> and permit to operate) <br /> 4 San Joaquin County Office of Emergency Services (hazardous materials <br /> disclosure) <br /> 5 City of Stockton (building permits) <br />' 2.5 TASK IV- SYSTEM CONSTRUCTION AND INSTALLATION <br /> 2.5.1 Groundwater Extraction System Design <br /> Recovery wells RW 1, RW2, RW3, RW4, and V l will be used for groundwater extraction. The <br /> objective will be to create a cone of depression sufficient to capture the plume of dissolved <br />' e6W--Q73%2rp191t. 14 <br />