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