SITE INFORMATION AND CORRESPONDENCE

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PARADISE POINT MARINA INFORMATION SHEET SEVEN RESORTS, INC. SAN JOAQUIN COUNTY Seven Resorts, Inc. owns and operates Paradise Point Marina. The facility consists of a store,restaurant, boat repair shop,four mobile homes for employee housing, laundry, showers and storage buildings. Slips are available for 160 boats and 40 rental houseboats. Sewage pumpout facilities are available for boats. The wastewater treatment plant is at the intersection of Disappointment Slough and Bishop Cut. The wastewater is initially treated by one 7,200 gallon septic tank and six 1,200 gallon septic tanks before entering the final septic tank(800 gallon)which is directly connected to the batch treatment facilities. The batch treatment facilities consist of a 30,000 gallon per day (gpd) capacity batch plant and a 3,000 gpd capacity batch standby plant. The batch treatment systems are used seasonally depending upon inflow. The 3,000 gpd system is operated during the wet season and the 30,000 gpd system is operated during the dry season. The 30,000 gpd batch treatment system consists of a screen, an aeration chamber, a clarifier, a chlorine injection system, a chlorine contact chamber, and multi-media pressure filters. The 3,000 gpd batch plant treatment utilizes similar process train system. Both batch treatment systems are housed inside a building. Treated wastewater is discharged at a point 2,000 feet north of the confluence of the Disappointment Slough and Bishop Cut. Paradise Point Marina used to consistently discharge formaldehyde into the outfall at concentrations up to 84 ppb. This concentration exceeded the Department of Health Services State Action Level of 30 ppb. The source of formaldehyde was a chemical toilet deodorant used in the house boat holding tank known as aeroflush. The high concentrations of formaldehyde in the effluent caused 100%mortality in the bioassay testing. Since August of 1991,the Discharger has stopped using the deodorant that contains the formaldehyde. Recent bioassay testing indicate no toxicity problems. USEPA adopted the National Toxics Rule(NTR) on 5 February 1993. The NTR contains water quality standards applicable to this discharge. Federal regulations require effluent limitations for all pollutants that are or may be discharged at a level that will cause or have the reasonable potential to cause, or contribute to an in-stream excursion above a narrative or numerical water quality standard. This Order contains a provision (provision 3)that requires the Discharger to provide information as to whether the levels of EPA priority pollutants and/or NTR constituents in the discharge cause or contribute to an in- stream excursion above a water quality objective and allows the Board to reopen this Order and include effluent limitations for those constituents. The City of Stockton provides services for the disposal of Paradise Point Marina's sludge. Paradise Point Marina pumps its sewage sludge during the summer months when recreational activities and discharge to the outfall are at their peaks.