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06.a. SSLOCSD Presentation SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT City of Arroyo Grande Presentation August 14, 2012 BOARD OF DIRECTORS •Three Member Body •Appointed By Respective Member Agency •Current Board of Directors City of Grover Beach – Bill Nicolls (Chairman) City of Arroyo Grande - Tony Ferrara Oceano Community Services District – Matthew Guerrero (Vice Chairman) •Wastewater Treatment •Wastewater Collection (Trunk Sewers) •Industrial Pre -Treatment •Fats, Oils and Grease (FOG) Control •Biosolids Disposal •Brine Disposal •Recycled Water (future) SERVICES PROVIDED SEWER RATES KEPT LOW FY2012-13, Typical SFR Wastewater Rates Monthly Current As-of Montecito Sanitary District $100.66 FY2012-13 Includes Est. Property Tax Summerland Sanitary District $95.98 FY2012-13 Includes Est. Property Tax City of San Luis Obispo $84.31 FY2011-12 Santa Ynez CSD $69.61 FY2012-13 Includes Est. Property Tax Vandenberg Village CSD $65.75 FY2012-13 Los Alamos CSD $61.08 FY2012-13 Includes Est. Property Tax Mission Canyon (CSA 12)$60.17 FY2012-13 Avila Beach CSD $57.40 FY2012-13 City of Lompoc $55.80 FY2012-13 Laguna County Sanitation District $54.50 FY2012-13 Carpinteria Sanitary District $51.44 FY2012-13 Includes Est. Property Tax Cuyama CSD $45.00 FY2012-13 City of Paso Robles $45.00 FY2012-13 Nipomo CSD $44.16 FY2012-13 City of Morro Bay $41.35 FY2012-13 City of Pismo Beach $40.32 FY2011-12 City of Santa Barbara $39.17 FY2012-13 Goleta Sanitary District $38.57 FY2012-13 Includes Est. Property Tax Mission Hills CSD $36.59 FY2012-13 City of Solvang $33.42 FY2012-13 Goleta West Sanitary District $31.75 FY2012-13 Includes Est. Property Tax City of Guadalupe $26.25 FY2012-13 City of Grover Beach/SSLOCSD $24.78 FY2011-12 Oceano CSD/SSLOCSD $23.97 FY2011-12 City of Arroyo Grande/SSLOCSD $22.36 FY2012-13 City of Buellton $21.00 FY2012-13 City of Santa Maria $15.80 FY2012-13 1) Document prepared in June 2012 2) Information gathed from Agency or current rate sheet 3) Assumed 10 Units of Water Usage per month •District formed by County Board of Supervisors – September 3, 1963 •Recognized need for wastewater treatment for: •Arroyo Grande •Oceano •Grover City (contract agency) •Grover City and Oceano area dependent on septic •Arroyo Grande sewered with “Sewer farm” •Increasing levels of nitrates observed in ground water from septic systems and Sewer Farm Location 1958 – Population (approximate) 2005 Census Population Grover City 6,500 Residents 13,857 Residents Oceano area 2,000 Residents 7,903 Residents Arroyo Grande 6,500 Residents 16,644 Residents TOTAL 15,000 Residents 38,404 Residents HISTORY OF SSLOCSD 1966 •Initial $2.5 million provided: •New wastewater treatment plant 2.5 MGD •Incoming trunk sewers •Ocean outfall •Concurrently, Grover City and Oceano Sanitary District, parts of Arroyo Grande undertook construction of local sewer systems HISTORY OF SSLOCSD Construction Completed 1966 •5/5/1966 (Pismo Times) INITIAL CONSTRUCTION 1966 SSLOCSD WWTP (2011) ADDITIONAL IMPROVEMENTS 1978 -79 •1978 •Replaced 1000 ft outfall line with new 4,000 ft line, at depth of 60 ft •Combined with Pismo Beach •Supported financially by major Federal Clean Water Grant •1979 •New sludge drying beds •New sludge thickener •New Maintenance Building •Installation of standby power MAJOR IMPROVEMENTS 1986, 1990 2005 •1986 •Original aeration tank/final clarifier converted into an enlarged, single, final clarifier •Addition of fixed film reactor (trickling filter) •New power generation building constructed •1990 •New Secondary Digester •New Primary Clarifier •2005 •New Chlorine Contact Chamber 1986 FIXED FILM REACTOR SEPTEMBER 2006 CHLORINE CONTACT CHAMBER CONSTRUCTION PRE -CONST. NOVEMBER 2006 HEADWORKS FLOOD WALL REPLACED OLD FLOOD WALL NOVEMBER 2006 NEW 600 KW GENERATOR OLD GENERATOR FEBRUARY 2007 EMERGENCY DIESEL STANDBY PUMP APRIL 2008 ARROYO GRANDE PIPE BRIDGE REHAB SEPTEMBER 2008 LIGHTING / ENERGY SAVINGS PROJECT DECEMBER 2008 SECONDARY DIGESTER DECEMBER 2008 MAINTENANCE BLDG ROOF REPAIR NOVEMBER 2009 COGENERATION FUEL TREATMENT CENTRIFUGE REPLACEMENT •Purchase of new dewatering centrifuge •Includes new centrifuge building housing adjacent to sludge drying beds •Supplements sludge drying beds during wet weather seasons MAY 2011 NEW CENTRIFUGE BUILDING OLD CENTRIFUGE AUGUST 2011 NEW CENTRIFUGE OLD CENTRIFUGE AUGUST 2011,AUGUST 2012 INFLUENT PUMPS MOTORS ENERGY SERVICES •Project aimed at achieving long - term energy efficiency and cost reduction Projected savings $114,000/year •Payoff in seven years +/- •Cogeneration/Energy savings •150 kW cogeneration plant powered by ultra clean burning MAN internal combustion engine •80% of Districts electrical needs to be generated onsite •Over 95% of the District’s digester heat provided by waste heat •146 lighting fixtures retrofitted to high efficiency technology •Annual energy savings projected to be over $114,000 •Annual energy savings guarantee of $103,307 •Anticipated utility rebates (self generation and lighting) in excess of $152,000 •Payoff project costs in 7 years Project highlights include: ENERGY SERVICES GREASE TO GAS •Timed, direct injection of kitchen greases into digester: •increased solids digestion •increased production of digester gas •increase energy content of the gas •Increase benefit of co -generation proposed in Energy Services capital improvements •Provides convenient means for owners and haulers to comply with regulations •Eliminates SSO’s •Compliance with Statewide WDR for FOG programs LONG RANGE PLAN •Clarifier No. 1 rebuild •Many pump/electrical improvements •Influent pumping plant modifications •additional flow measuring devices •additional in -channel screening •Additional Gas/Electrical Upgrades •Grease to Gas •New aeration tank •New secondary clarifier •New second centrifuge unit CURRENT PROJECTS LONG RANGE PLAN •Provide for future needs based on local planning estimates •Provide uninterrupted compliance with State and Federal waste discharge requirements •Develop redundant processes SECONDARY CLARIFIER NEW AERATION TANKS •Two aeration tanks with 295,000 gallon capacity each •Increase secondary treatment capability •Provide dissolved oxygen for activated sludge process •Operates in series with existing fixed film reactor NEW SECONDARY CLARIFIER •Single, 87 ft diameter cylindrical concrete tank with 530,000 gallon capacity •Operates alone or in parallel with existing second clarifier •Provides for process redundancy •Summary of the December 2010 Spill Event •What's been done and planned to be done, to prevent spills in the future SPILL EVENT DECEMBER 19, 2010 DECEMBER 2010 SPILL •The Spill occurred during a declared flood emergency •Given the emergency circumstances the District staff performed heroically •No known adverse health or environmental effects •First Spill in over 25 years •The Water Board’s fine and volume calculations are grossly overstated and lack basis 12/19/10 SPILL EVENT OVERVIEW ALOHA AVENUE – VIEW OF TREATMENT PLANT ENTRANCE WWTP Driveway Entrance SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT ALOHA AVENUE – DURING DECEMBER 19, 2010 STORM WWTP Driveway Entrance Approximately 10:00 AM (just prior to shunt trip failure) SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT LOCAL NEWS FOOTAGE DURING HEIGHT OF STORM/FLOOD SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT THE 12/19/10 SPILL EVENT SUMMARY AND CONCLUSIONS •Rainfall and flooding was an extraordinary event •Local and State declared emergency •District had emergency bypass pump onsite for this type of emergency – without it, millions of gallons would have spilled •Field investigations, eye witness reporting, and observed system conditions verified District’s estimate for accurate spill volume SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT NO KNOWN LASTING EFFECTS OF THE SPILL •No Long -Term Threat to Human Health on Adjacent Beach – Based on County Water Quality Sampling on December 28, 2010 •No Observed Biological Impacts •No Deleterious Impact on the Fish Species in Arroyo Grande Creek - 2011 -9 -22 State of California Department of Parks and Recreation letter to District Administrator •Extensive Community Outreach by District SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT WHAT'S BEEN DONE TO REDUCE THE CHANCE FOR A FUTURE SPILL •Locking manholes installed •Emergency Response Plan updated •Operations and Maintenance manual updated •CalWarn Agreement •Pumps and valves replaced •Electrical system upgraded •Long Range Plan being implemented •Community outreach •Standard and Emergency Operating Procedures Implemented •Source of electrical cause of spill fixed SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT WHAT'S CURRENTLY BEING DONE TO REDUCE THE CHANCE FOR A FUTURE SPILL •Final electrical system upgrades •Electrical system to be inspected annually before rainy season •Inflow and infiltration monitoring •Coordination with County for overall emergency work plan •Coordination with County to address lagoon flooding SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT OVERVIEW OF WATER RECYCLING RECYCLED WATER •Water reuse symposium •Focus on Ag reuse and others if feasible •Advisory/Stakeholders Group RECYCLED WATER DEMAND •SSLOCSD AREA LANDSCAPE IRRIGATION •Estimated Irrigated Area, 72.5 Acres •Annual Demand, 145 AF •GROUNDWATER RECHARGE/STREAM AUG •Annual Demand, 950 AF •NIPOMO GROUNDWATER RECHARGE •Annual Demand, 800 AF •DIRECT AGRICULTURAL IRRIGATION •Estimated Irrigated Area, 3,140 Acres •Annual Demand, 7,850 AF •INDUSTRIAL (CONOCO PHILLIPS) •Annual Demand, 1,290 AF COST OVERVIEW (2001 DOLLARS) Alternative Capital Cost, $ Cost, $/AFY 1 -1. Turf Irrigation in Service Area (tertiary), south of Hwy 101 $10,100,000 $8,300 1 -2. Alt. 1 -2, and expanding north of Hwy 101 $11,800,000 $8,500 1 -3. Alt. 1 -2, and including Nipomo Area Golf Courses $16,500,000 $3,100 1 -4. Secondary Effluent to Caltrans and Cemetery $1,400,000 $2,200 2 -1. Tri -Cities Mesa Groundwater Recharge $25,600,000 $4,900 2 -2. Alt. 2 -1, plus SSLOCSD service area turf irrigation $28,200,000 $5,100 3 -1. Direct agricultural irrigation (tertiary) $25,200,000 $4,900 3 -2. Alt. 3 -1 plus landscape irrigation in SSLOCSD service area $28,100,000 $5,200 3 -3. Stream Augmentation, Arroyo Grande Creek $29,100,000 $5,100 4 -1. Tosco Refinery $24,900,000 $4,000 SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT DESALINATION PLANT STORAGE COAG./ CLAR. SECONDARY CLARIFIER SOUTH SAN LUIS OBISPO COUNTY SANITATION DISTRICT City of Arroyo Grande Questions? August 14, 2012