SITE INFORMATION AND CORRESPONDENCE

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�T- EOMpn�G. BRoax Je, Ynrnrew FkHHH uez Water Boards N ISM 1,µ ,FC pN Central Valley Regional Water Quality Control Board 9 January 2017 Howard Weinberg Kris Cruz, Manager Bridge Bay at Shasta Lake Paradise Point Marina/Peloria 2550 Via Tejon, Suite 2B 8095 Rio Blanco Road Palos Verde, CA 90274 Stockton, CA 95219 howard@weinberg law.la kris@paradisemarina.vacations REVIEW OF SUBSURFACE INVESTIGATION REPORT AND WORK PLAN ADDENDUM FOR ADDITIONAL INVESTIGATION, PARADISE POINT MARINA, 8095 RIO BLANCO ROAD, STOCKTON, SAN JOAQUIN COUNTY, GEOTRACKER GLOBAL ID# T10000007741 California Regional Water Quality Control Board, Central Valley Region (Central Valley Water Board) staff reviewed the 14 June 2016 Subsurface Investigation Report(Investigation Report) submitted by PES Environmental, Inc. (PES) for the unauthorized petroleum release at Paradise Point Marina (Site). In September 2015 you discovered that the buried distribution line between your 10,000-gallon aboveground gasoline storage tank and the product dispenser(s) had failed; based upon currently available data, PES estimates that the failure released approximately 1,000 gallons of gasoline. In October 2015 you excavated approximately 840 cubic yards of petroleum impacted soil, removing approximately 250 gallons of petroleum hydrocarbons. Between October 2015 and February 2016 you operated an extraction well near the release and removed approximately 6,000 gallons of petroleum impacted groundwater containing an unknown quantity of petroleum hydrocarbons. The Investigation Report documents the results of the limited soil and groundwater investigation conducted in February 2016 and contains recommendations for the advancement of additional soil borings, installation of groundwater monitoring wells, and the collection of soil and groundwater samples to delineate the extent of the petroleum release. The Investigation Report identifies two supply wells near the release: "Well No. 1" is an irrigation well which is used seasonally, has a total depth between 30 and 50 feet bgs, and is located approximately 30 feet laterally from the suspected petroleum release point; "Well No. 2" is a potable water supply well with a screen interval between 55 and 75 feet bgs and is located approximately 200 feet laterally down to crossgradient of the suspected point of the petroleum release. In February 2016 you sampled these wells and did not detect any petroleum constituents. In a 28 June 2016 email Central Valley Water Board staff concurred with the Investigation Report recommendations and requested that you submit an addendum to your 24 November 2015 Work Plan for Soil and Groundwater Investigation (2015 Work Plan)for the recommended work. On 4 November 2016 you submitted the Addendum Work Plan for Soil and Groundwater Investigation (Addendum) that recommends 14 potential boring locations with up to 6 of these locations converted into groundwater monitoring wells with well screens between approximately 10 to 25 feet below ground surface (bgs). Additionally, in a 15 June 2016 email PES requested cleanup goals for closure of the Site with unrestricted use. Central Valley Water Board staff responded to this email stating the following residential screening criteria should be used for each specific media (i.e., soil, soil vapor, and groundwater)for the Site to be closed without restrictions on future use: KAHL E. LONuIEV Sc D, P.E.,CHAIR I PAMGLA C. C"bk WN P.E., BCEE, EXECUTIVE OFFICER 11020 BCn CoMer Drive 9200,Ramp*C dor&,CA 95670 I www,wet9r�o9rOe.a9.0ev/pnV Wa99y 0.,C.....Twee