SITE INFORMATION AND CORRESPONDENCE

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INFORMATION SHEET PARADISE POINT MARINA SEVEN RESORTS, INC. SAN JOAQUIN COUNTY San Joaquin Health Services Department issued, on 1 July 1988, a Notice to Abate after septic waste from failing leachfields was found to be surfacing in a drainage ditch. The notice required Paradise Point Marina to install a new engineered sewage treatment and disposal system. Shallow ground water and peat soil precluded the use of leachfield disposal within the limited land area controlled by the marina. Seven Resorts, Inc. owns and operates Paradise Point Marina. The facility consists of a store/restaurant, boat repair building, office, house boat pumpout, mobile homes, laundry, and storage buildings. 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 1200 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 3000 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 system 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 has consistently discharged formaldehyde in the outfall at concentrations up to 84 ppb. This exceeds the Department of Health Services State Action Level of 30 ppb. The source of formaldehyde is a chemical toilet deodorant used in the house boat holding tank known as Aeroflush. Past bioassays have indicated 0 % survival rate. As of August 1991, the Discharger has stop using deodorant that contains formaldehyde. Recent laboratory analyses have shown no indication of the presence of formaldehyde. 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. Paradise Point Marina has been classified as a low volume discharger with respect to the Inland Surface Water Plan and Enclosed Bays and Estuaries Plan.