City & County of Honolulu
Department of Environmental ServicesEnvironmental Services
Collection System MaintenanceMaintenance Division (CSM)
PUMP STATIONS
HWEA conferenceFebruary 4, 2015February 4, 0 5
Presentation Objectives / OutlinesPresentation Objectives / Outlines
• Promote general awareness of 67 pumpPromote general awareness of 67 pump stations under CSM’s maintenance jurisdiction
• Share introductory and interesting facts and l d CSM istats related to CSM pump stations
• Promote general awareness of past and present major condition assessment effortsp j
Trivia Question: service area that passes through five City pump
stations to reach treatment plantstations to reach treatment plant
Collection System Maintenance Division (CSM)y ( )
• Main office located in Halawa$ ll• FY14 operating expenses: $22 million
– based on City budget and accounting reporting system
C ll ti t• Collection systems– Piping network with 44,600 manholes– 136,400 service laterals
• Department reorg of July 2010: transferred administrative responsibility of pump stations to CSM*
*2010 Reorg Details2010 Reorg Details• Transferred to CSM from WTD:
– Administrative responsibility of 67 pump stations– 30 pump station operator and supervisor positions
• Not transferred to CSM:– 20 City ENV pumping facilities
• located within or adjacent to a wastewater treatment plant, or otherwise designated by department managementotherwise designated by department management
– Trade craft and specialty procurement support positions
– SCADA center operationSCADA center operation
not covered in this presentation• “Low Pressure” Sewer Systems, aka grinder pumps
– 679 stations, mostly located in Laie
• Stormwater pumping or gate control facilities
• Pumping facilities being monitored by ENV SCADA t b t d d t d b th Citcenter but owned and operated by other City
departments or private entities.
first pump station – Kakaako, built in 1900• Replaced by Ala Moana#1 in 1950’s• Replaced by Ala Moana#1 in 1950 s.
Organizational Management DistrictsOrganizational Management DistrictsCOUNT
METRO DISTRICT 19Sand Island WWTP flow basinEast Honolulu WWTP (private) flow basinHonouliuli WWTP flow basin
Only: Halawa WaimaluPacific Palisades
LEEWARD DISTRICT 23H li li WWTP fl b iHonouliuli WWTP flow basin
Except: Halawa WaimaluPacific Palisades
Waianae WWTP flow basinWahiawa WWTP flow basin
WINDWARD DISTRICT 25Kailua WWTP flow basinWaimanalo WWTP flow basin
Service Age*g*date of new station if built to replace existing of same name
60
70
80
Age
30
40
50
60
Ave = 39 years
0
10
20
30
Age
Note: not all 67 station names are shown on y-axis
Station Count: Pump Motor Unit QuantityStation Count: Pump Motor Unit Quantity
Total of 173 pump motor units
Static Head of Pumpingp gElevation difference between pump suction and discharge
St ti H d (ft)
120.00
140.00
160.00
Static Head (ft)
60.00
80.00
100.00
Ave = 35’
0.00
20.00
40.00
o rk ty o 2 ki 1 ni ni ai es u nt u et ry 2 h u et ty ts o es es ve 5 ce rk et 2 rk ve ei
Static Head (ft)
Waipi
aiaw
a Indu
stria
l Par
Makakilo
Cit
Kukano
n
t Beach Resort N
o.
Waikapo
k
t Beach Resort N
o.
Laen
a n
Mililan
Punawa
Maunawili Estate
Waimal
Alala Po
i n
Uwal
Hart Stre e
Ewa Gen
tr
Ewa Gen
try No.
Ewa Be
ac
Waipah
Nakula Stree
Pearl Cit
Kailua He
ight
Miomi
Enchanted Lak e
West Loch Estate
Coconu
t Grov
ohe Ba
y South No.
Ohai Plac
Moana
Par
Awa Stree
Kane
ohe Ba
y No.
sland
Indu
stria
l Pa r
Aala Driv
Lualuale
Wa
West
West
Kane
Sand
I
Note: not all 67 station names are shown on y-axis
Station Count: Cathodic Corrosion i f iProtection System for Force Main
Note: new pipe materials and construction methods have reduced need for cathodic protection system
Trivia Question: station with Flowmatchervariable speed electric motor control
Answer:W i iWaipio WWPS
Average Daily Electricity Usageg y y g
7000.00
Kilowatt‐Hour
4000.00
5000.00
6000.00
1000.00
2000.00
3000.00
KWH/Day
0.00
average daily electricity cost = $12k, annual cost = $12k x 365 = $4.38 million
Note: not all 67 station names are shown on y-axis
g y y
Major Condition Assessment Efforts:Pre‐1994 EPA Consent Decree
• 1944 Metcalf & Eddy1944 Metcalf & Eddy– 5 stations
• 1961• Belt Collins / Kennedy Engineers• Austin Tsutsumi
– 6 (South) + 4 (North) = 10 stations( ) ( )
Major Condition Assessment Efforts:Post 1994 EPA Consent DecreePost‐1994 EPA Consent Decree
• 1994‐2012: Fukunaga & Associatesg– Force Main Condition Assessment Program, 2004– Pump Station O&MManuals 2012Pump Station O&M Manuals, 2012– Facility Spill Contingency Plans, 2012
• 2006‐2008: City in‐house condition assessment led bycondition assessment led byWTD Asset Management office– Inhouse reports / data
Major Condition Assessment Efforts:Post 1994 EPA Consent DecreePost‐1994 EPA Consent Decree
• 2007‐2010: CH2M Hill– program management– Long Term Plan 2008Long Term Plan, 2008– Pump Station Assessment Methodologies, 2010
• 2010‐2012: Brown & CaldwellEl t i l & I&C S t C diti A t 2012– Electrical & I&C Systems Condition Assessment, 2012
– extensive photo database
Major Condition Assessment Efforts:Post 1994 EPA Consent DecreePost‐1994 EPA Consent Decree
• 2010‐2015: HDR– program management– Comprehensive asset inventorying – Condition assessment for selective high priority force mains– Force Main Condition Assessment Procedures, 2011– Force Main Performance Testing Plan, 2011– Pump Station SCADA Master Plan, 2013– Pump Station SOP (for operator) , 2014
• 2011‐ongoing: URS– Island wide pump station condition assessment
• 2011‐ongoing: Belt Collins– Island wide force main condition assessment