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(209) 577-6200 C I T Y O F M O D E S T O W a s t e w a t e r T r e a t m e n t P l a n t The Sutter Wastewater Treatment Plant performs primary treatment of collected domes- tic wastewater (WW) for the City of Modesto. Wastewater travels to the facility via 639 miles of sanitary lines and 40 WW lift stations. The WW enters the plant through 48— 60 inch pipes and is processed through four 27 MGD, 200 HP influent pumps housed in the Headworks building. The Influent Pumps bring the WW to the bar screens, which remove large and inorganic solids (such as rags and wipes) from the WW. Solids removed by the barscreens are washed and then compacted for disposal at a local landfill. Heavy solids, such as egg shells, sand and indigestibles (corn and rice) called Grit are then placed in grit bins that, once filled, are sent to our local landfill. Sutter and Jennings Wastewater Treatment Plants After settling in primary clarifiers for approximately two hours, the primary-treated WW is then pumped to the Jennings Wastewater Treatment Plant where the domestic flows un- dergo secondary biological treatment. The pro- cess consists of three fixed-film reactor towers, 334 acres of oxidation ponds, and 126 acres of recirculation channels. Up to 2.3 million gallons per day of pri- mary-treated WW undergoes Tertiary treatment to produce highly treated recycled WW for year- round discharge and other uses. Currently, the City disposes of its treated WW in two ways: 1. Stored in 596 acres of ponds so it can be prepared to irrigate fodder crops on 2,450 acres of City-owned land 2. WW that is not used for irrigation is stored, disinfected and then seasonally discharged to the San Joaquin River from October through May. Sutter Wastewater Treatment Plant Primary Treatment 1221 Sutter Avenue, Modesto Jennings Wastewater Treatment Plant Secondary/Tertiary Treatment 7007 Jennings Rd, Modesto Servicing the Cities of Modesto, Empire and Ceres with a total population of 224,000 with approximately 639 miles of sewer lines and an average daily water flow of 23.5 MGD. Conveyor and Compactor Influent Pumps Headworks Building Fixed Film Reactor Towers Environmental Services The Environmental Services section of the Wastewater Division is responsible for ensuring the compliance of state and federal laws. Inspections of permitted facilities and samples are periodically collected to ensure compliance with the City’s wastewater discharge and storm water permits and to protect Dry Creek and the Tuolumne River, which discharge into the San Joaquin River. You can help prevent storm drain and groundwater pollution, protect our waterways, and save our lakes and rivers by following the sug- gestions below: Automotive Recycle used motor oil and filters, call 577-5493 for details. Use absorbent material such as kitty litter to clean up oil spills. Maintain your car to prevent oil and antifreeze leaking into the street. Dispose of antifreeze, car batteries and transmis- sion fluids at our HHW Facility, call 525-4123. Wash cars on unpaved surfaces or at a commer- cial car wash. Home Maintenance Recycle paint and toxic cleaners at our HHW facility, call 525-4123. Drain your pool or spa in the sewer drain NOT the storm drain. Rinse paint brushes and pans in the sink and NOT the driveway. Control erosion by preventing dirt, concrete and debris from entering gutters and storm drains. Rinse out your garbage cans on your lawn and NOT in your driveway or street. Lawn and Garden Use non-toxic alternatives to pesticides and herb- icides. Keep leaves and yard clippings at least one foot from the curb. Don’t over water or apply toxic products in rainy weather. Sweep driveways, patios, and sidewalks rather than hosing them off. Dispose of animal wastes in the garbage can. Discharge to San Joaquin River ---PAGE BREAK--- The City of Modesto has started construction of Phase 2 Tertiary at the Jennings Wastewater Treatment Plant. When completed, this plant will process 12.6 million gallons per day. The project will use membrane bioreactor (MBR) fil- tration and Ultraviolet (UV) disinfection to produce high quality WW effluent. This new facility is the second phase of major improvements being imple- mented to maintain discharge permit com- pliance and to improve the plant’s opera- tional ability as growth continues. Future construction of Phase 3 will accommodate future expansion, and provide a valuable reusable water resource to neighboring communities. Construction of Phase 2 has started at a cost of $120M and is funded by a State Revolving Fund loan. Phase 2 Tertiary is scheduled to be completed and up and run- ning by 2016! Phase 1 Tertiary, located at the Jennings Wastewater Treatment Plant, was completed in June of 2010. The Tertiary is supplied with a blend of Sutter effluent and Jennings recirculation channel water and consists of membrane filters with spaghetti like material with microscopic orifices that filter the water. At full operation, the Tertiary facil- ity has a maximum production capacity of 2.3 MGD. Tertiary is designed for year- round discharge and replaces our regular seasonal discharge of pond secondary effluent. Taking Wastewater Treatment to new levels to protect the environment and provide much-needed irrigation water to local agriculture! Phase 1 Tertiary Jennings Wastewater Treatment Plant Phase 2 Tertiary Jennings Wastewater Treatment Plant Phase 1 Tertiary North Valley Regional Recycled Water Program The North Valley Regional Recycled Water Program is a collaborative partnership that includes the Cities of Modes- to, Turlock and Ceres, the Del Puerto Water District, and Stanislaus County. The is being developed as a regional solution to address south of the Delta water supply shortages and reliability concerns by utilizing recycled water for beneficial use. The proposed will deliver recycled water produced by the Cities of Modesto, Turlock and Ceres to the Del Puerto Water District (DPWD), a Central Valley Project (CVP) agri- cultural water district located primarily in western Stanislaus County. Water Quality Control Laboratory The Water Quality Control Labora- tory (WQC Lab) performs testing for wastewater, stormwater and water for the City of Modesto. The WQC Lab is equipped for general physical, mineral, inorganic, bac- teriological and biological testing. The WQC Lab staff works with Operations staff to en- sure that the Primary and Secondary/ Tertiary facilities are sampled on a schedule in keeping with the City’s National Pollutant Discharge Elimination System (NPDES) per- mit requirements and process control needs. The WQC Lab is responsible for rec- ord keeping to ensure that all regulatory per- mit required analyses are performed. They work with the City of Modesto Water Divi- sion to schedule and report for all necessary sample for California Department of Public Health (CDPH) requirements. They assist our Environmental Services Section in simi- lar capacity, for Industrial Customers as well as stormwater sampling and analytical needs. Phase 2 Tertiary Construction