HomeMy WebLinkAboutCAPITAL PROJECTS ACTION SUMMARY 12-11-12central
Sanitary District
SPECIAL MEETING OF THE
CENTRAL CONTRA COSTA
SANITARY DISTRICT
CAPITAL PROJECTS COMMITTEE
ACTION SUMMARY
Chair McGill
Member Causey (Alternate)
Tuesday, December 11, 2012
3:00 p.m.
Second Floor Conference Room
5019 Imhoff Place
Martinez, California
BOARD OF DIRECTORS:
JAMES A NEJEDLY
President
DAVID R WILLIAMS
President Pr, Tem
PAUL H. CAUSEY
MICHAEL R MCGILL
TAD J PILECKI
PHONE: (925) 228 -9500
FAX: (925) 676 -7211
www. centralsan. or g
PRESENT: Mike McGill, Paul Causey (Alternate), Ann Farrell, Melody LaBella,
Samantha Engelage, Dana Lawson, Andrew Antkowiak, Danea Gemmell, Sasha
Mestetsky, Paul Seitz, Michael Scahill, Thea Vassallo, Curt Swanson
Call Meeting to Order
Chair McGill called the meeting to order at 3:00 p.m.
2. Public Comments
None.
*3. Review of Draft Fiscal Year 2013 -14 Capital Improvement Budget (CIB) and
2013 10 -Year Capital Improvement Plan (CIP)
General Manager Ann Farrell began the discussion with an overview of the
capital funding needs and emphasized the need for a significant increase in the
capital component of the sewer service charge to fund the ten year capital
program as currently proposed. Capital Projects Division Manager Andrew
Antkowiak presented detailed information on the overall ten year funding needs
(attached) and then focused on the planned projects for Fiscal Year 2013 -14.
This information will be presented to the full Board on December 20, 2012.
COMMITTEE ACTION: Received the report.
Capital Projects Committee
December 11, 2012
Page 2
*4. Update on Nutrient Studies required by NPDES Permit
Assistant Engineer Melody LaBella discussed the ongoing nutrient studies that
District staff is participating in to determine if wastewater discharges are causing
harm to the San Francisco Bay (presentation attached). Assistant Engineer
Samantha Engelage discussed the Nutrient Facility Visioning Plan and site
characterization work that is being developed to identify what technologies would
be most appropriate should more stringent ammonia and /or nutrient removal
requirements be mandated by regulators. Both of these efforts are required by
the District's NPDES permit and have firm submittal deadlines to the San
Francisco Bay Regional Water Quality Control Board (SFRWQCB). The results
of this work will be considered by the SFRWQCB when they re- examine the
District's current ammonia load cap in April of 2015 to determine if it is sufficiently
protective of the Bay.
COMMITTEE ACTION: Received the report.
*5. Update on Relocation Plans for employees from Headquarters Office Building
(HOB) during the HOB Seismic Retrofit Project
Associate Engineer Nate Hodges provided an update on the relocation plans
(attached). Staff currently housed in HOB will be spread among a rented building
in Concord and three locations on the Martinez campus. These three locations
are the Annex (former Animal Control Shelter), the 4737 Warehouse structure,
and trailers. Functions involving contact with the public, such as the permit
counter and the Secretary of the District, will be housed in the Annex with
appropriate improvements to comply with ADA requirements.
COMMITTEE ACTION: Received the report.
6. Reports and Announcements
None.
7. Suggestions for future agenda items
None.
8. Adjournment — at 5:10 p.m.
* Attachment
3
2013 -14 Capital Improvement
Budget and Plan
Capital Projects Committee Meeting
December 11, 2012
Kick -off FY 2013 -14 Financial Planning
• No Proposition 218 Notice in Place
• Significant Increase in Capital Component of Sewer
Service Charge needed to fund Capital Program
• Today's meeting reviews proposed Capital Program
Expenditures for FY 2013 -14 and next ten years
• Similar presentation to full Board December 20, 2012
• Combined Operation & Maintenance and Capital
Planning Ten Year Plan Financial Workshop January 24,
2012
• Board agreement on language for Proposition 218 notice
needed by early to mid March to meet printing /mailing
timelines
1
Sewer
Service
Charge is
Critical
Funding
$637,000
Source
for Capital
Program
FY 2012 -13 CAPITAL REVENUES
BUDGETED
Facility Capacity Fees
$4,417,000
Pumped Zone Fees
$637,000
Interest Sewer Construction Fund
$350,000
Property Taxes (Net after debt paid)
$7,534,000
Sewer Service Charge ($27 capital component)
$4,430,000
Reimbursements from Others
City of Concord
$3,833,000
Recycled Water Sales (Net after O &M)
$61,000
Developer Fees /Other
$525,000
TOTAL
$21,787,000
Current Year Program Sets Beginning
SCF Balance for Ten Year Plan
FY 2011 -12 CAPITAL PROGRAM
BUDGETED
Total Expenditures
$32.3 million
Total Revenue
$21.8 million
Variance
-$10.5 million
Beginning SCF Balance 6/30/13
Funds Required for Cash Flow
$35.8 million
$30 — 35 million
2
Increase in SSC Capital Component is
needed to fully fund Capital Program.
5500
$450 ,,$43-3
Total Charge per RUE SdU-/
s4a6 5371
5350 1
5300 5260 5280
$269
5300 $311 5311 S371 /- $344 5353 3354
5272 -- �'h'i.
5300 4302
5250 522d
5200
5200 ns
5150
5100 S76 '-- $79
556 SS�apltal Program Component 549
S50 579 .�27
519 511
SO
2=41 M7 W XM43 ?73:.1 MAIM 2(/3506 21X61 21,741 27U3M 20H.10 20111 2371 2 2012 -13 201304 .+711..4.15
PTL- Po-
Lt-
Capital Program has been deficit
spending for many years
570 0
!�5
,..
5500 3393 6573 1532
sews. <on.LUCtfon wtw 353 D U13 131 T
e.w.a:. 1521
550 0 1,T D
Shc ; 1,5.1
3d5, 1x59
$400
3 373 5
a $323 1307
3
S300
IN 8
E200
$100
Soo
'99.'M 7110061 .y0t57 =.a 7]0301 ..45 2706 -A Z3 200111 20gv11 201112 MR•f3 2011-d 20„-13
ad9.
R15 2181 nT0 G35 3:12 1100 12d3 1:97 '!5.! tt{, 1719 t15D t71I W9 t2d0 1293
+.n E.sen. 3273 /L•2 Uf, Irid {,36 tT63 (ITT IN9 Wd 2167 [.91 1:90 Q,D 1327 1415 {757
— —'_CF O.ts.e.• M Mit 3411 115, 153D t5T3 1552 13,3 1511 Sa50 Sisi t"it yli7 1353 1307 1.`
'SFC Balance is not strictly governed by checkbook accounting and may not strictly represent the
sum of prior year balance and current year variance.
3
Preliminary Ten Year Plan Findings -
Two -Year -$31 per Year Sewer Service Charge
Increase Needed to Fund Capital + O &M
Fiscal
SSC Ops
SSC Cap
Total SSC
Total Est
Year
Compnt
Compnt
Cap
Revenue*
Current
$344
$27
$371
$21.8
2012 -13
million
Prelim
$353
$49
$402
$24.0
2013 -14
million
Prelim
$354
$79
$433
$29.5
2014 -15
million
-ideal 1 % reinvestment spending rate - $31 million per year.
Should bonds be considered as an
alternative to raising rates?
• Guideline for bonding capacity maximum of 20% of
revenue going to debt service. FY 2011 -12 Revenue -
$85 million therefore suggested debt service < $17
million.
• Current debt service $5.6 million per year vs. $17 million
per year guideline.
• Investigation of benefits of using bonds to pay down
CCCERA unfunded pension obligation ongoing.
• May be prudent to reserve bonding capacity for large
capital requirements for unbudgeted regulatory
mandates.
rd
Board Role in Capital Program is Ongoing
• Set Initial Capital Funding Levels in Nov /December
• Confirm Capital Funding Levels in Jan /February as
part of overall District Ten Year Financial Plan
• Agree upon wording for Prop 218 notice March
• Board Workshop Focused on CIB /CIP Projects April
• Authorize CIB /Program Budgets and O &M Budget and
set Rates in June
• Authorize Supplemental Program Funds when needed
• Award Construction Projects > $100,000
• Authorize Construction Change Orders >$100,000
• Authorize Consultant Contracts > $100,000
9
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$365 Million Ten Year Plan Is a Responsible
One That Funds....
Total Cost
Treatment Plant Baseline
• Treatment Plant
Collection System Baseline
$14.9 million
— Primary Sedimentation Renovation
$
11 M
— Cogeneration Replacement/Alternative Energy
$
6 M
— Nitrification
$
70 M
— Contaminated Soils Remediation
$
20 M
— Incinerator /Solids Handling Improvements
$
12.5 M
— Screenings Removal
$
7 M
• Collection System
— Identified Renovation Needs
$
110.1 M
— Identified Capacity Needs
$
28.6 M
— Pumping Station Renovation
$
11.2 M
— CAD's and Developer Sewers
$
12.9 M
• General Improvements and Treatment Plant
— Seismic Improvements
$
7.1 M
• Recycled Water
— Concord Landscape Irrigation
$
4.41VI
Proposed FY 2013 -14 Capital Improvement Budget
FY 2013 -14 CIB
Program /Project
Total Cost
Treatment Plant Baseline
$ 8.7 million
Collection System Baseline
$14.9 million
General Improvements Baseline"
$ 4.1 million
Recycled Water Baseline
$ 0.4 million
Concord Landscape Irrigation
$1.5 million
Total Baseline
$28.1 million
Total Baseline + Concord REW
$29.6 million
'Includes $1.8 million for one time seismic retrofits of HOB
1
FY 2013 -14 TREATMENT PLANT PROGRAM
CATEGORY
PROJECT
ANNUAL
EXPENSE
One Time
Renovation
Primary Treatment Renovation
$5,000,000
Pump & Blower Building Seismic
$ 850,000
Cogeneration Renovation
$ 400,000
Recurring
Renovation
Piping Renovation Phase 8
$ 100,000
All Other
$2,364,000
Total Baseline
$8,714,000
Treatment Plant Renovation Needs Continue to
be Identified with Condition Assessments
-Determine the likelihood of failure and /or the
remaining life of the asset. I -I
-Completed Assessments:
*Concrete
-Asphalt Paving
*Protective Coatings
*Transformers
*Buildings re Seismic
*Presence of Hazardous Materials
*Critical Piping (Aeration)
*Elevators
*Electrical Switchgear
MM Mn: Eill! ♦ -M LauWn: Ro..,Nw
er. M R.IS Wv \: &9/1W4 OYmN DMwK WtoY .r Wtl Naw
Photo 13: Bay 1 - Detail of Exposed
Aggregate Above Water Line (Typical)
K
$11.0 M Primary Sedimentation Tank
Renovations Incorporates Condition
Assessment Findings and Improves Efficiency
• Proposed Renovations
— Replace Scum Collection System
— Replace Chain Drives — Rehabilitate Concrete
— Replace water and air i4g**
supply piping
— Replace Scum Skimmers and Thickener
— Construct New Grit Handling Facilities
— Upgrade /Renovate Electrical Conduits /Equipment
Scum Spray System Requires Renovation to
Improve Performance
K
Drive Shafts & Bearings need to be
replaced
i ! I'- " 4"
Grit Handling Facilities are Odorous and
Reaching End of Useful Life
4
Cogeneration Upgrades
• Repaired existing cogeneration unit
• Evaluated options
for upgrading
• Concluded that the
existing cogeneration
unit should be maintained until plant
energy demands increase significantly
(i.e. nitrification)
Cogeneration Upgrades
• Negotiating five years maintenance
contract with Solar Turbines
• Required cogeneration unit upgrades
—upgrade to electronic fuel valves
—new controls
—new fuel manifold /injectors for natural
gas
— other
• Proceeding with recommended
improvements
k,
Renewable Energy
• CCCSD is participating in the regional
renewable energy procurement (R -REP), led by
Alameda County.
• Solar assessments have been performed on most
District properties:
— Solar power purchase agreement recommended for
HHW, CSO and CSO Vehicle Shop (no capital expense)
• Regional RFP will be issued in mid -2013 to procure
a bid on solar energy for more than 20 agencies.
• Position Paper in January for CCCSD Board to
authorize signing of R -REP MOU
Piping Renovation
Ongoing program to identify and replace
deteriorated piping
and equipment
throughout the
treatment plant.
NPDES Permit Adopted April 1, 2012
• Requires participation in collaborative studies to evaluate
the role of ammonia and ammonium in inhibiting primary
productivity (phyto and zoo plankton) in Suisun Bay.
Final report due 11 -1 -2014.
• Requires development of facilities plan to evaluate
alternative treatment technologies to remove ammonia and
site characterization for contaminated site.
Final report due 2 -28 -2014.
• Requires total ammonia effluent load limit 5500 kg/day
monthly average.
Permit "relook "....April 1, 2015..... reassess the
appropriateness of the total ammonia load limit.
What could Ammonia Removal look like?
(Basis of $70 million capital cost estimate in CIP)
1 AIM, 7
4 �l
c �
:W,���
Conventional Nitrification
7
What could nutrient removal look like?
(Additional $70 M without removal of contaminated soils —
currently unbudgeted.)
iqg
I 4E
Nutrient Removal lev-• III
r
Contaminated Soil
"er
Recove
Nutrient
MEBR Recove
n S'l e I
'IO
A
Some Nitrification/Nutrient Removal Approaches Take Less
Space
•
0
0
Cost of Contaminated Soil
Remediation is a Consideration in
Choosing Future Treatment
Cost depends on Waste Class (estimated 150,000 cy)
- Non Hazardous — landfill - $18.9 Million
(Haul to Keller Canyon Landfill)
- Non- RCRA — Hazardous - $18.5 - 27.6 Million
(Rail transport to Utah)
- RCRA Hazardous - $42.7 - $145.8 Million
(Rail transport to Idaho)
- On -site treatment - $27 — 39.5 Million
(Stabilization /Solidification)
Characterization study underway
Assume $20 Million for planning purposes in year 2019
Comparing Solids Handling
a] 8n Ed Stn+ Vase Fpm- I- gmt &rk,. brb KFe rmarel
_l J '� ) a v3 o - J
amt
-10 e ! Y 011 SA :1j s % . '� :i ik ik _ • u
961ob
G2 - F
MULTIPLE HEARTH FURNACE
47
Blesolds
Natural Gas — • • — • Muhiple
hearth
LarnIM Gas — • • — • lumaca
Ash
Greenhouse
gases Usable
$team steam
Waste heal
6ader
Feed
B,m,. heating
Feedsrner Feedwaler Tank/
Deaeralor
ethods
_lelX
_ e x
Plece¢Charow"MHa
Will
Heatmg Value
BTU/dry lb TS
Gas Healing Requirements
MMBTII/dy ten ®21 %TS
Gas Healing Requkements
MMBTII/dry ton
Gas Healing Requirements
MMBTIMday _
LandHl Gas To Be Used
MMSCF /day
Max hachm LFG/Biogas m gas supply
Heat Transfaned
MMBTWday
Steam Generation (Parsons)
lb/hr at 10 ton TSlday
and 708 MMBP.1/dry gas heating
20®LandS'I Gas Usana
tAHF MI
MMSCF LG/yr
MHF 42
MMSCF LG/yr
MHF Sum
MMSCF LG/yr
MHF Sum LF Gas
MMBTUIyr
Nmual Gas Usabe
MHF MI
kcf NG/yt
MHF $2
kc(NG/yr
MHF Sum
MMSCF NGlyr
MHF Sum Nat Ga.
MMBTII/yr
Fsed.l., Heatmg
Ih steam per hour per gpm makeup vn
Condensate Return
of, hl team
Condemme Bloedrm
of usah:e steam
retain Source mass balance sheet
gN. cesneh�e� e._ (cna:binr stun Z cr i,h eaNn t l aeeana a on L ll!JJ !Jl-
ote.r.a wpaeoer - IDoZi4r.811t
E
Solids Handling Alternatives Analysis
Solids Handling
Capital Cost
O &M Cost
Present Worth
Alternative
$ 10,601,000
($ /year)
of 20 -year Life
Concrete & CM Pipe, TV
Cycle Cost*
Anaerobic
$40,090,000
$6,050,000
$125,000,000
Digestion
$ 1,600,000
Pleasant Hill
Anaerobic
$58,664,000
$3,418,000
$109,257,000
Digestion w/ FOG
Grinder, Buchanan South
and Food Waste **
Developer services
Developer Services
Fluidized Bed
$60,000,000
$2,620,000
$98,985,000
Incineration
Lane, Willow Drive
All others
Multiple Hearth
$16,702,000
$4,940,000
$90,195,800
Furnace Upgrade
* Assumes discount rate of 3 %, $6 /MMBTU NG, $0.13 /kWh
** Includes costs for side - stream ammonia treatment
FY 2013 -14 COLLECTION SYSTEM PROGRAM
CATEGORY
PROJECT
ANNUAL EXPENSE
Renovation program
North Orinda 5, Lafayette 8,
$ 10,601,000
Diablo 2, Walnut Creek 10,
Concrete & CM Pipe, TV
inspection and others
Capacity /Renovations
Grayson Creek Trunk in
$ 1,600,000
Pleasant Hill
Pumping Stations
Moraga Pumping Station
$ 600,000
Grinder, Buchanan South
Removal
Developer services
Developer Services
$ 681,000
Contractual
Current CADs — Harper
$ 500,000
Assessment Districts
Lane, Willow Drive
All others
$ 2,137,000
Total
$14,919,000
E[il
Pipe Renovated to Date
The following table reflects the miles of pipe
(6, 8 &10 Inch) renovated to date.
FISCAL YEAR
PIPE RENOVATED
2005/07
8.1 Miles
2007/08
5.6 Miles
2008/09
6.3 Miles
2009/10
7.5 Miles
2010/11
2.6 Miles
2011/12
6.8 Miles
2012/13
5.3 Miles
TOTAL
Completed Renovation
42.2 Miles
11
Renovation Program (6, 8 & 10 inch)
Achieves 100% Completion
of all known defects by FY 19/20
Total miles of pipe to be renovated - 82.8 miles*
Miles of pipe renovated to date - 42.2 miles
Remaining miles to renovate - 40.6 miles
10 Yr Budget
Miles of
Percent of
for
Pipe
Known
Renovation
Renov. in
Defects
(millions) **
Next 10
Renov. in
Yrs * **
10 Yrs
$110.1
1 74.4
100 %+
* Based on TV inspection of 99 percent of 6, 8 and 10 inch mains
** Provides $22.1 million in FY 18119 to 22123 for lines currently
not identified by TV program
* ** Estimated at $280/ft
SSO Downward Trend Has Been
Significant Since Start of Renovation
Program
Running 12 -Month Overflow Totals
1999 to present
200
v.nr .e,
1511
1293
100
50
0
m .s �s m •C 0c 0c m m e m R 0 m
12 -Month Total at Month -End
12
SSO Downward Trend Has Been
Significant Since Start of Renovation
Program
Comparison of Cumulative Overflows
100
so-------- -- ------ - -- -- - - -IL -- - - - --
80 ------------------ ------------------------ -.
70 -- - -- -- - -- -- 1 - - ---- - -- -- - -- -
60 -- - -- -- - - -� -- F -- - -- -- -- -- - -
-
50 -- --------- - - - -� -- -- -- - - - - - -- -
40 --, - -- -- - - -- -� --- -- -- -
30 -- -- -- - -- -- - __
I '
10 -- --� -- yl- - - - -�- 11 --
/��
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
t 2009 2010 sir 2011 2012
Pleasant HIII -
Pleseant Hlllfarayson
Ploasant "III Road
(C eted In FY 2011112)
— o. e
n �• oi.2'
E14
Morap - ., l�
a C�J
Moran Way •5�
Capacity Program
61 2)
.4- .1 �(, e4.F
10 year plan includes
$18M for high priority
capacity projects
04.0 - -
ee.4 --WalnutC
3 Walnut Blvd
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Budget funds abandonment of Buchanan South P.S.
North
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AJrpon
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Budget funds abandonment of Buchanan South P.S.
North
Pump ng
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Air Field Reconnect
AJrpon
N Minimism
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14
FY 2013 -14 GENERAL IMPROVEMENTS PROGRAM
PROJECT
ANNUAL EXPENSE
Vehicles and Equipment
$500,000
Information Technology
$500,000
Seismic Improvements HOB
$1,800,000
GDI Treatment Plant and
SMMS Replacement
$600,000
All Other
$691,000
Total
$4,091,000
GDI & SMMS Replacement
SMMS MRKFLUN SEE
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15
Seismic Retrofit Program
Project
201310 -YR CIP
CONSTRUCTION
HOB
$ 1,800,000
FY 2013 -14
Pump & Blower
$ 2,850,000
FY 2013 -14
POB Office Area
$ 1,176,000
FY 2015 -16
TP Warehouse
$ 895,000
FY 2016 -17
Laboratory
$ 192,000
FY 2016 -17
SCB'
$ 200,000
FY 2022 -23
Total
$ 7,113,000
' Seismic Retrofit of SCB is estimated at $7 -8 Million for construction; does
not include bracing furnaces. Budgeted outside 10 year plan in anticipation of
potential change in solids handling method.
16
HOB Seismic Retrofit
�'Ll LIULU
HOB Seismic Retrofit
So Hounch Detail 1 4.1.31
17
Relocating Staff during HOB
Seismic Upgrade
— Keep as much staff as possible on or near
Martinez campus
— Utilize existing facilities (4737 Warehouse,
Annex, space in POB)
— Lease office space in Concord
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1
FY 2013 -14 RECYCLED WATER PROGRAM
PROJECT
ANNUAL EXPENSE
Baseline - Pleasant Hill Zone 1,
Martinez Refineries and other
REW Planning
$ 356,000
Total Baseline
$ 356,000
Concord Landscape Irrigation
$1,500,000
Total
$1,856,000
20
Concord Landscape Irrigation Project
Approx. 190
AFY
Cohowmn Over 34 New
0— Customers
$4.4 million
total cost
Zil $1.2 million
Prop 84 Grant
Bid in
February 2013
Martinez Refinery Project
Construction Unbudgeted/ Conducting Title 16 Feasibility Study in cooperation
with CCWD
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Board Role in Capital Program is Ongoing
• Set Initial Capital Funding Levels in Nov /December
• Confirm Capital Funding Levels in Jan /February as
part of overall District Ten Year Financial Plan
• Agree upon wording for Prop 218 notice March
• Board Workshop Focused on CIB /CIP Projects April
• Authorize CIB /Program Budgets and O &M Budget and
set Rates in June
• Authorize Supplemental Program Funds when needed
• Award Construction Projects > $100,000
• Authorize Construction Change Orders >$100,000
• Authorize Consultant Contracts > $100,000
What do we need from the Board today?
• Concurrence that proposed preliminary expenditure
figures for FY 2013 -14 and the subsequent 9 years are
acceptable for inclusion in financial planning documents
to be reviewed by Board in January 2013
• Concurrence that relative emphasis and allocation of
expenditures between the four programs is acceptable
for development of the detailed FY 2013 -14 Capital
Improvement Budget and Ten -Year Capital Plan
• Acknowledgement that a significant increase in the
capital component of the Sewer Service Charge will be
needed in FY 2013 -14 and FY 2014 -15 to fund the
recommended 2013 Ten Year Capital Plan
�xa
4
Bay Nutrient Studies
Melody LaBella & Mary Lou Esparza
Capital Projects Committee Meeting
December 11, 2012
Central Contra Costa Sanitary District
But First ... a Primer
• Nutrients = nitrogen and phosphorus
• Nitrogen includes various forms
• Ammonia, ammonium, nitrate, nitrite, urea
• Nutrients are an important food source for
the aquatic food web
• Can be problematic if out of balance
,. PREDATORS
c FORAGE
FISH
° ZOOPUW KTON
• • • s ' PHVTOPI•ANKTON
`s s•
e s
Hypotheses
• 4 uM ammonium inhibits phytoplankton
uptake of nitrate causing decreased growth
as measured by chlorophyll -a
• Ammonium causes direct and indirect
toxicity to copepods (zooplankton)
Negotiated Nutrient Study
Requirements
1. Surface Water Ambient Monitoring
Program (SWAMP) Suisun Bay Study
2. Effluent Characterization Study
3. Copepod Study
4. Collaborative Nutrient Studies by Bay Area
Clean Water Agencies (BACWA)
5a. Discharge Modeling
Additional Nutrient Studies
5b. Discharge modeling
6. Living laboratory (Basin B bypass during
outfall improvements project)
3
1. SWAMP Suisun Bay Study
• Target of study is to determine if there is
inhibition of Spring primary production in
Suisun Bay, and, if so, what is causing it
• 10 stations monitored in Spring 2011 and
2012
1. SWAMP Suisun Bay Study
• CCCSD participation and requirements
• Funded additional sampling station at the
confluence of the San Joaquin River
• Funded herbicide and pesticide analysis
• Provided laboratory analysis of nutrients,
metals and surfactants
• Submit data report to the Regional Board by
December 1, 2012 on analysis by CCCSD
1. SWAMP Suisun Bay Study
• Early findings (from our data report)
• No contaminant stands out as the single
cause of low phytoplankton in Suisun Bay
• Ammonia threshold does not accurately
predict phytoplankton >10 uM.
• Individually, herbicides do not appear to
cause low phytoplankton.
• Synergistic effect is being investigated by
SWFCA as final component of the study.
2. Effluent Characterization Study
• Required of all Bay Area POTWs via 13267 letter
• Requires reporting of nutrient forms,
concentrations, monthly loadings and treatment
plant removals
• Two years of sampling, beginning July 1, 2012
• Data will be used for modeling nutrient loads in
San Francisco Bay
• Quarterly reports due to Regional Board 30 days
after end of each calendar quarter
• Submitted first report on October 30, 2012
5
2. Effluent Characterization Study
• Early findings:
• Total nitrogen removal is -40%
• Compared with similar Bay Area POTWs with
secondary treatment, we remove more
nitrogen than half
• Total phosphorus removal is -81%
• Compared with similar Bay Area POTWs with
secondary treatment, we remove more
phosphorus than half
3. Copepod Study
• Target of study is to test the life cycle effects of
food limitation (indirect toxicity) and ammonia
concentrations (direct toxicity) on copepods
• The study is an offshoot of work completed by
UC Davis researcher Dr. Swee Teh in 2010
• CCCSD requirements
• Submit comments on SFCWA's proposed study
design by August 3, 2012
• Suggest members and fund an expert panel to
review revised study plan by SFCWA
• Contribute financially to the study ($66,000)
6
3. Copepod Study
• In parallel, CCCSD is working with UC Davis
researchers to repeat portions of their
Copepod study to refine their toxicity
threshold finding of 0.36 mg/L ammonium.
• The study is ultimately under the control of
SFCWA with results due to the Regional
Board by November 1, 2014.
4. Collaborative Nutrient Studies
by BACWA
• Supports work needed to develop the
Nutrient Management Strategy for SF Bay
• Objectives are to:
• Help advance understanding of potential
nutrient - related impacts on SF Bay water quality
• Inform future regulatory decisions
7
4. Collaborative Nutrient Studies
by BACWA
• Progress to date:
• Draft synthesis report has been written by
San Francisco Estuary Institute
• Contains currently available data on the
beneficial use impairment of Suisun Bay
• Identifies data gaps that exist
• Will propose studies to bridge the gaps
5a /5b. Discharge Modeling
• Determine whether existing sampling
stations in Suisun Bay adequately
characterize the potential impact of
CCCSD's discharge (required)
• Determine impact of CCCSD's contributions
alone to ammonium concentrations in
Suisun Bay (not required)
• Results expected late- Dec /early -Jan
8
6. Living Laboratory (Basin B Bypass)
• CCCSD staff monitored creek impacts from
our seasonal discharge of treated effluent
into Pacheco Creek during outfall pipeline
maintenance
• Findings contradict phytoplankton hypotheses
6. Living Laboratory (Basin B Bypass)
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In Closing...
• Many studies still to come
• CCCSD continues to press for sound science
for regulatory decision - making
10
Item No. 4
Nutrient Facility Plan & Site
Characterization
Samantha Engelage & Dana Lawson
December 11, 2012
4.
Central Contra Costa Sanitary District
Project Background
• NPDES Permit Section VI.C.5.iii.d requires:
— Work Plan
— Evaluation of ammonia removal technologies
— Facility Planning for range of potential limits
— Pilot scale systems analysis
— Characterization of material located on property where
future facilities would be built
— Summary report to Regional Board February 28, 2014
1
Work Plan Components
• Submitted June 29, 2012
• Element 1:
Existing Plant Optimization for Ammonia Removal
Evaluation
• Element 2:
— Nutrient Removal Facilities Plan
• Element 3:
Site Characterization
Element 1: Plant Optimization
• Determine extent of ammonia removal
achieved with modest changes to current
facilities in near term to meet potential interim
limits
• Whole -Plant Simulator (BioWin)
• Configured & calibrated using Plant specs, 2011
process data, and 2012 special sampling data
• Reconfiguration of Existing Aeration Basins
• Consultant developing optimization options confined
by existing footprint
K
Element 1: Plant Optimization
cont'd
• Primary Sedimentation Baffle Study
• Increase removal efficiency in the primaries to
decrease air needed in secondaries
• Cyanide Study
• Extent of site - specific nitrification inhibition
• Pilot Studies
• Proof of concept & applicability
Element 2: Facility Plan
• Evaluate applicability of conventional & emerging
innovative ammonia and total nitrogen removal
technologies to achieve compliance with strict
effluent limits based on Sac. Regional & Stockton
NPDES permits
• Ammonia removal beyond capability of Plant
optimization strategies
01
Element 2: Facility Plan
cont'd
• Total Nitrification Study
• 2010 report recommended extended aeration
• Visioning Plan
• Evaluation of cutting -edge nitrogen removal
technologies (including site visits)
• Pilot Studies
• Proof of concept & applicability
Element 3: Site Characterization
L�
• Evaluate Surcharge Pile area for placement
of ammonia (or total nitrogen) removal
facilities — Environmental Compliance Group
• Regulatory Approval & Coordination
• Soil & Groundwater Characterization
• Remediation /Disposal Options
BCD_
E
Proiect Schedule
Element 1
Plant Optimization
Spring 2013
—Pilot Studies
— Summer 2013
Element 2
Facility Plan
Winter 2013
—Pilot Studies
— Summer 2014
Element 3
Site Characterization
Spring 2013
Summary Report to the
February 28, 2014
Regional Board
Questions?
CAPITAL PROJECTS
COMMITTEE
HOB Seismic Relocation
December 11, 2012
rc C-LS X-
Central Contra Costa Sanitary District
Relocation Schedule
S.
8 Month
Construction
Board Award
December 6
Staff Relocation
Mid January 2013
HOB Construction Starts
January'13/
February'13
HOB Construction Ends
Mid October'13
Move Back
End October'13
S.
• Concord Office
- Finance,
Accounting
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- HR
Concord Offices - Risk Management
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Lease Highlights
• :12 month lease
• Optional :12 month extension
• Terminate with 3 months notice
• $28,736 monthly payment
• Jan 20:13 - December 2013
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