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10 June 2008 <br /> AGE NC Project No. 97-0312 <br /> Page 6 of 11 <br /> 2.5.2. Ozone BST Analysis <br /> For the Ozone BST,soil samples collected from the proposed boring(B30)will be combined with. <br /> ground water collected from the selected ground water monitoringwells(MW-5 and MW-8)located <br /> in the area of former pump island area. AGE proposes-to assess two sets of soil and water matrix <br /> samples,in addition to laboratory quality assurance and'quality controls (QA/QC)to comprise an <br /> analytical batch for chemical comparison.AGE proposes this method to generally create real-time <br /> reactions,between soil and ground water from the site,which may be occurring in the subsurface <br /> due to in-situ ozone injection. <br /> During the Ozone BST,ground water samples will be periodically analyzed for 1,2-dichloroethene . <br /> (1,2-DCA), Cr+6, and ozone to calculate changes in concentration to both hydrocarbons and. <br /> by-products which are detrimental to water quality: <br /> A geochemical evaluation (GE)and a written report of findings will be prepared by McCampbell <br /> Analytical Inc.(MAI),a CDPH-certified laboratory for CVRWQCB consideration and will include <br /> the results of the formation of by-products and potential for contaminant reduction,with generalized <br /> worst case reactions. The report will be in a.format acceptable to the CVRWQCB, and will be <br /> reviewed by a California Professional Geologist. <br /> 2.6. REPORT PREPARATION <br /> Results of the high vacuum SVE Test and Ozone BST will be presented in a completion of a <br /> Remedial Action Work Plan or Remediation Feasibility Report.Based on the results of the Ozone <br /> BST,preparation of an in-situ ozone injection pilot test.work plan may be recommended.The work <br /> plans or report will be in a format acceptable to the CVRWQCB, and will be reviewed and signed <br /> by a California Professional Geologist. <br /> 3.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of a California <br /> Professional Geologist. Procedures for SVE well installations, SVE Test, soil and ground water <br /> sampling,and the Ozone BST procedures are described below. <br /> 3.1. DRILLING AND SOIL SAMPLING <br /> A soil boring for collection of soil sampling to be used in the Ozone BST will be advanced to a depth <br /> Advanced GeoEnviron mental,Inc. <br /> r <br />