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San Joaquin County Onsite Wastewater Disposal Standards Regional Water Quality Control Board. Any deviation from these discharge Section 4-Package Treatment Plants requirements shall be declared a public nuisance and a violation of the 4.1 Where package sewage treatment plants are required, Rules and Regulations of San Joaquin County Ordinance No.3675. As complete engineered plans shall be submitted by a Registered Civil such, a cease and desist order shall be given. Engineer to the Director of Environmental Health and the San Joaquin 4.9 Treatment plant tanks are to be installed on undisturbed soil County Public Works Department for initial approval prior to beginning excavated to required slope and elevation or on properly installed reinforced construction. Final approval for operation of the package sewage concrete foundation in such a manner as to prevent listing or settling,which treatment plants shall not be granted until a waste discharge resolution may cause malfunction or leaking. has been set by the Central Valley Regional Water Quality Control 4.10 A grease receptor shall be required whenever any commercial Board(CVRWOCB). The plans shall include the following: food establishment is connected to the plant or any activity,which produces 4.1.1 A complete scaled plot plan of the area showing wells, a grease content over and above the normal grease content found in structures,sanitary sewerage lines,water lines and total proposed land domestic sewage. Grease receptors shall be required as an addition to a use. sewage disposal plant if it is determined from the analysis of the sewage 4.1.2 Total capacity of the plant in gallons and organic load. Design influent or effluent that elevated grease levels prevail. criteria shall include a reserve capacity to accommodate a surge flow or 4.11 A grease receptor must be installed in front of the wet well(head increase in the average daily flow. works)to affectively screen out floating and suspended grease produced by 4.1.3 Calculations showing ability of effluent to meet discharge commercial food operations. The grease receptor must be of sufficient size standards as set by the Central Valley Regional Water Quality Control to retain the grease-laden sewage for a period suitable to remove the grease. Board. 4.1.4 The source of data and the data calculated to the existing 4.12 An open polishing pond shall be installed between the plant and plant or any future expansion of the plant shall be shown on the plans. the subsurface disposal field. This pond must be segmented by a series of redwood baffles and a weir must be installed so as to screen out the 4.1.5 The percolation rales of leach fields or seepage pits shall be suspended flocculent material remaining prior to flowing into the subsurface calculated and figures shown on the plans. An expansion area equal in disposal field. size to the original disposal field shall be so designated on the plan to be 4.13 Monthly monitoring by a certified sewage plant operator is utilized in the event of failure of the original disposal field. This required. Analysis required may include Biochemical Oxygen Demands, expansion area shall pertain to percolation ponds or evaporation ponds Dissolved Oxygen and settable solids of plant influents and effluents and at as well as subsurface disposal fields. such other points on stream as may be necessary*. Average daily flows 4.1.6 A hydrologic balance for evaporation/percolation ponds. and peak flows after plant is in operation are to be determined by a reliable 4.2 When any existing package sewage treatment plant is method. Copies of these analyses and operational records shall be furnished to the Director of Environmental Health and the Central Valley remodeled or altered,all of the above specifications are to be Regional Water Quality Control Board. resubmitted for approval by the Director of Environmental Health and the CVRWOCB. *Analyses shall be done utilizing the methods specified in the most recent edition of"Standard Methods for Examination of Water and Wastewater" 4.3 Mechanical and electrical equipment shall be of such durable USPHS. hardware,workmanship, and installation as to insure against operational failure with normal maintenance. 4.14 An auxiliary electrical power supply shall be available for the continued operation of the package sewage treatment plant. Portable 4.4 All installations shall be adequately protected against acts of power supply may be used if made available within a reasonable period of vandalism or sabotage,which could result in a malfunction of the plant. time in the event of a failure. The entire plant, polishing ponds and percolation ponds shall be fenced and a locked gate provided to protect against any unauthorized person 4.15 All plumbing fixtures must be of a low flow,energy efficient and gaining entrance into the plant area,which could lead to injury or loss of water-saver type for commercial facilities. life. California Health and Safety Code,Section 5411 4.5 A certified operator with skill to cause the plant to be operated No person shall discharge sewage,or other waste,or the effluent of treated as designed shall be available to operate the plant. The operator shall sewage or other waste, in any manner which will result in contamination, be certified by the State of California Water Resources Control Board- pollution,or a nuisance. Central Valley Region. 4.6 All work or works shall be done under applicable required San Joaquin County Ordinance Code,Title 9,Section 9.1110.9 permits and inspection by the required regulatory agency. It shall be unlawful to maintain or use any residence, place of business,or other building or place where persons reside,congregate,or are employed 4.7 The installation and operation of treatment plants shall not which is not provided with a means for the disposal of wastewater which create a public nuisance in regard to odor nor cause a potential or complies the requirements of this Chapter and the standards relating to immediate safety or health hazard to the public. The discharge of wastewater disposal established by the Environmental Health Department. treated effluent shall not cause contamination of the water bearing strata or surface watercourses. San Joaquin County Ordinance Code,Title 8,Section 5.5100 4.8 Final disposition of sewage effluent shall be in constant It is a violation of this division for any property owner to permit or maintain a compliance with the discharge requirements as set by the Central Valley nuisance on his property.