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Brian W. Millman <br />Senior Geologist <br />California Professional Geolo <br />Daniel J. Villanueva <br />Senior Geologist <br />29 March 2018 <br /> AdvancedGeo <br />AGE Project No. 18-4345 <br /> Environmental <br />Page 4 of 4 <br />All soil-vapor samples will be labeled with sample ID, project name, date, time, and <br />samplers' initials. The samples will be logged on a chain-of-custody form, and placed into <br />dry containers. Subsequently, the soil-vapor sample will be delivered to a CDPH-certified <br />analytical laboratory for analysis of VOCs by EPA method TO-15. <br />EQUIPMENT DECONTAMINATION/WASTE MANAGEMENT <br />Prior to use, all non-disposable sampling tools used for sample collection will be <br />thoroughly rinsed with clean water after being washed with a solution of Alconox. <br />BORING ABANDONMENT <br />All soil borings will be permanently sealed to prevent vertical migration of potential <br />contaminants. Soil borings shall be abandoned by backfilling with cement grout from the <br />total depth to surface grade. The top three to six inches of the boring abandonments will <br />be completed flush to surface grade with concrete. The SJCEHD will be notified for grout <br />inspection at least 48 hours prior to conducting grouting procedures. <br />REPORTING <br />Reporting of the site assessment will include a description of work performed and the <br />results of all field sampling. Conclusions and recommendations will also be included in <br />the report. The report will be reviewed and signed by a California Professional Geologist. <br />If you have any questions or require further information, please contact our office at <br />(800) 511-9300. <br />Sincerely, <br />Advanced GeoEnvironmental, Inc.