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Advanced GeoEnvironmental, Inc. 25 March 2004 MAR 2 9 2004 AGE-NC Project No. 01-0865 \ENVIRONMENT HEALTH PERMIT/SERVICES Subject: Revised Public Notification Letter- Discharge of Treated Ground Water HERMAN AND HELEN'S MARINA 15135 Eight Mile Road, Stockton, California To Whom It May Concern: On behalf of the owners of Herman and Helen's Marina(HHM), 15135 Eight Mile Road, Stockton, California and in accordance with Attachment A to the California Regional Water Quality Control Board (RWQCB) General Order 5-00-119 For Discharge of Ground Water From Cleanup Of Petroleum Fuel Pollution To Surface Water, Advanced GeoEnvironmental, Inc. (AGE) is hereby giving public notification that ground water cleanup activities will commence at the Herman and Helen's Marina on or before 28 May 2004. The permitting process for Attachment A requires that a"Public Notification Letter"be submitted to adjacent properties within 500 feet of the site, to the local County Health Department and to the California Department of Fish and Game. The property is currently occupied by Herman and Helen's Marina, which consists of multiple floating structures on the Little Connection Slough, as well as two buildings and a large asphalt parking lot(Figure 1).Currently,two 12,000-gallon above ground storage tanks are in use at the site. One tank contains gasoline, the second is compartmentalized into one 5,000-gallon gasoline tank, one 3,000-gallon gasoline tank,one 3,000-gallon diesel tank and one 1,000-gallon oil tank.The tanks are connected to dispensers by piping contained in a concrete-lined trench. A site plan depicting ground water monitoring wells,the ground water extraction well,ground water treatment system and site boundaries is depicted in Figure 2. Results of a subsurface investigation at Herman and Helen's Marina indicates that ground water at the site has been impacted by methyl tertiary butyl ether (MTBE), total petroleum hydrocarbons quantified as gasoline(TPH-g),and low concentrations of dissolved benzene,toluene,ethyl benzene and xylene(BTEX); in addition,tert-amyl methyl ether(TAME)and tert butanol(TBA)have been detected during investigation at the site. As required by the California Regional Water Quality Control Board-Central Valley Region's(RWQCB)letters dated 27 May 2003,30 January 2003 and 18 December 2002, AGE has prepared and submitted Ground Water Extraction Feasibility Test Report, dated 05 May 2003, and Interim Remediation Work Plan -July 2003, dated 22 July 2003. As a result of petroleum-impact to soil and ground water at the Herman and Helen's Manna site,the RWQCB has directed by letter dated 30 December 2003 that a ground water pump and treat interim 837 Shaw Road,Stockton,California 95215 Telephone(209)467-1006 FAX(209)467-1118