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21 March 1991 <br /> (GeoAudit CV 43C4 . 1. 1) <br /> Page 3 of 3 <br /> 10) Log auger returns in accordance with the Unified Soil <br /> Classification System. <br /> 11) Convert the boring to an extraction well in accordance with <br /> the well design depicted on Figure 4 . <br /> 12) Analyze samples for total petroleum hydrocarbons (TPH) in <br /> accordance with the DHS method (for gasoline) and for <br /> purgeable aromatic hydrocarbons (BTE&X) in accordance with EPA <br /> method 8020 . <br /> 13) Prepare a report signed by a California Registered Geologist, <br /> detailing the results of the work in a format to be submitted <br /> to the SJEHD. <br /> Please feel free to call our office if you have any questions. <br /> Sincerely, <br /> ��RED �fD <br /> GEOLOGICAL AUDIT SERVICES, INC. <br /> c n <br /> ft4r S • -, <br /> * 7 <br /> �JC)5 <br /> JOWVKy D. Bennett Joshua Ong, Ph.D. CAL` <br /> Project Geologist Senior Project Hydrogeologist <br /> Registered Geologist No. 4725 <br /> cc: (1) Mrs. Donna Rolleri Bruno <br />