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WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2004-0028 -25- WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2004-0028 -26-
<br /> CITY OF MANTECA,CITY OF LATHROP AND DUTRA FARMS CITY OF MANTECA,CITY OF LATHROP AND DUTRA FARMS
<br /> WASTEWATER QUALITY CONTROL FACILITY WASTEWATER QUALITY CONTROL FACILITY
<br /> SAN JOAQUIN COUNTY SAN JOAQUIN COUNTY
<br /> the permit. is facilitated by providing a tertiary level of wastewater treatment that will allow for a
<br /> greater variety of uses in accordance with California Code of Regulations,Title 22.
<br /> 58. This Order contains Effluent Limitations and a tertiary level of treatment,or equivalent,
<br /> necessary to protect the beneficial uses of the receiving water. In accordance with California g. The Regional Board has considered the factors specified in CWC Section 13263,including
<br /> Water Code,Section 13241,the Regional Board has considered the following: considering the provisions in CWC Section 13241,in adopting the disinfection and filtration
<br /> requirements under Title 22 criteria. The Regional Board fmds,on balance,that these
<br /> a. As stated in the above Findings,the past,present and probable future beneficial uses of the requirements are necessary to protect the beneficial uses of the San Joaquin River,including
<br /> receiving stream include municipal and domestic supply,agricultural irrigation,agricultural water contact recreation and irrigation uses.
<br /> stock watering,industrial process water supply,industrial service supply,body contact
<br /> water recreation,other non-body contact water recreation,warm freshwater aquatic habitat, STORMWATER
<br /> cold freshwater aquatic habitat,warm fish migration habitat,cold fish migration habitat,
<br /> warm spawning habitat,wildlife habitat,and navigation. 59. Federal Regulations for stormwater discharges are contained in 40 CFR Parts 122,123,and 124.
<br /> The regulations require specific categories of facilities,which discharge stormwater associated
<br /> b. The environmental characteristics of the hydrographic unit,including the quality of the with industrial activity(stormwater)to obtain NPDES permits and implement Best Available
<br /> available water,will be improved by the requirement to provide tertiary treatment for this Technology Economically Achievable(BAT)and Best Conventional Pollutant Control
<br /> wastewater discharge. Tertiary treatment will allow for the reuse of the undiluted Technology(BCT)to reduce or eliminate industrial stormwater pollution.
<br /> wastewater for food crop irrigation and contact recreation activities that would otherwise be
<br /> unsafe according to recommendations from the California Department of Health Services 60. Regulated stormwater discharges include those from facilities used in storage,treatment,
<br /> (DHS). recycling,and reclamation of municipal or domestic sewage,including land dedicated to the
<br /> disposal of sewage sludge that are located within the confines of the facility,with a design flow
<br /> c. Fishable and swimmable water quality conditions can be reasonably achieved through the of 1 mgd or more,or required to have an approved pretreatment program under 40 CFR Part
<br /> coordinated control of all factors that affect water quality in the area. 403.Not included are farmlands,domestic gardens,or lands used for sludge management where
<br /> sludge is beneficially reused and which are not physically located in the confines of the facility,
<br /> d. The economic impact of requiring an increased level of treatment has been considered. The or areas that are in compliance with Clean Water Act Section 405.
<br /> Discharger has estimated that the increased level of treatment will cost approximately$5.1
<br /> million. The current monthly domestic sewer user fee is$11.05(2000). The California 61. The State Board adopted Order 97-03-DWQ(General NPDES Permit No.CAS000001)
<br /> average monthly domestic sewer user fee is$19.71(2000). The loss of beneficial uses specifying waste discharge requirements for discharges of stormwater associated with industrial
<br /> within downstream waters,without the tertiary treatment requirement,which includes activities,excluding construction activities,and requiring submittal of a Notice of Intent by
<br /> prohibiting the irrigation of food crops and prohibiting public access for contact recreational industries to be covered under the Order. This Order further specified that if an individual Order
<br /> purposes,would have a detrimental economic impact. In addition to pathogen removal to is adopted for stormwater runoff from a facility,then the General Permit would no longer apply.
<br /> protect irrigation and recreation,tertiary treatment may also aid in meeting discharge Since all stormwater that falls on the treatment plant site is collected and pumped to the
<br /> limitations for other pollutants,such as heavy metals,reducing the need for advanced secondary-treated wastewater storage ponds of the plant,a Stormwater Pollution Prevention Plan
<br /> treatment. has not been made a requirement of this Order.
<br /> e. The requirement to provide tertiary treatment for this discharge will not adversely impact RECLAMATION
<br /> the need for housing in the area.The potential for developing housing in the area will be
<br /> facilitated by improved water quality,which protects the contact recreation and irrigation 62. Wastewater is currently used to irrigate 210 acres of agricultural land owned by the City of
<br /> uses of the receiving water. DHS recommends that,in order to protect the public health, Manteca,and 150 acres of leased land owned by Dutra Farms. DHS has established statewide
<br /> relatively undiluted wastewater effluent must be treated to a tertiary level for contact reclamation criteria in Title 22,California Code of Regulations,Section 60301,et seq.(hereafter
<br /> recreational and food crop irrigation uses. Without tertiary treatment,the downstream Title 22)for the use of reclaimed water,and has developed guidelines for specific uses. This
<br /> waters could not be safely utilized for contact recreation or the irrigation of food crops. Order requires compliance with applicable Title 22 requirements.
<br /> f It is the Regional Board's policy,(Basin Plan,page IV-15.00,Policy 2)to encourage the PRETREATMENT
<br /> reuse of wastewater. The Regional Board requires Dischargers to evaluate how reuse or
<br /> land disposal of wastewater can be optimized. The need to develop and use recycled water
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