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COLLECTION SYSTEM O&M AND ASSET
MANAGEMENT AT LACSD
Anthony Howard, PE
Supervising Engineer
Water Reclamation Plants Section
April 20, 2015
Sanitation Districts of Los Angeles County
Wastewater Collection Systems
Trunk Sewers – 1,400 miles
Size Ranges from 8 to 144 inches – 8 to 15 inches 32%
– 16 to 27 inches 37%
– >27 inches 31%
48 Pumping Plants: 150 gpm to 60 MGD
Annual Wastewater Collection System Section Operating Budget ~$42 million
AV and SCV Collection Systems
Joint Outfall System (JOS)
District Sewer System
Collection System
Organizational Structure
Collection System
Organizational Structure
Collection System Maintenance Facilities
Regulatory Requirements
2006 SWRCB Order Established Waste
Discharge Requirements
– For Sewer Systems with >1 mile of sewer
– Prohibits SSOs
– Requires Electronic Reporting of SSOs
– Requires Sewer System Management Plan
– LACSD has 20 separate collection
systems registered under the Order
Levels of Service
Zero preventable SSOs per 100 miles per
District
Respond to the scene of all SSOs within 1
hour
Less than 5 odor complaints for each
District and JO system
Complete 100% preventative maintenance
per year
Number of
Sewer Overflows
0
2
4
6
8
10
12
14
2007 2008 2009 2010 2011 2012 2013
Calendar Year
Management Systems
Custom GIS Application
Oracle WAM
– Work Management/CMMS
– Asset Management
SCADA
Actuate BIRT
Old Fashioned Paper Documents
GIS Application
Oracle WAM
Assets
Preventative Maintenance Scheduling
Corrective Work
Work History
Asset Cost
Purchasing
Time Keeping
Central Alarm Center
SCADA System
Paper Maps
Collection System O&M
Line Cleaning/Checking
Closed Circuit Television (CCTV) Inspection
Flow Monitoring
Odor & Corrosion Control
Line Cleaning/Checking
Annual Production about 800 miles
Work scheduled with WAM software
Cleaning Frequency
– Generally based on size
– Special cleaning frequencies for:
• Siphons
• Roots
• FOG & Debris
Bag Cleaning Overview
WINCH TRUCK
DUMP TRUCK
PORTABLE BLOWER
CCTV Program
Production 100-200 miles Annually
– 2 LACSD CCTV Shifts + Contractor
Inspection Frequency
– Every 5 to 15 years (Size & Pipe Type)
Emergency Inspections
CCTV Results VIDEO REACH REPORTS
EMERGENCY INSPECTIONS
Flow Monitoring
~750 sites monitored annually
~60 Wet Weather Monitoring Locations
Cross Connection Flow Verification
Large Diameter Flow Monitoring Contract
Odor & Corrosion Control
Odor & Corrosion Control Methods
FERROUS CHLORIDE
CARBON SCRUBBERS
CAUSTIC SHOCK DOSING
CROWN SPRAY
Crown Spray Process
Results of Corrosion
Results of Corrosion
Sewer Replacement, Repair, and Relief
Accelerated Corrosion Rates
$1.15 Billion Invested Since 1983
About 80% to Address Corroded RCP
Roughly 60% Rehabilitated, 40% New
Pipe
PVC Lined RCP for 42” and Greater
VCP for Pipe Less than 42”
Sewer Replacement, Repair, and Relief
Pumping Plant Upgrades
Installation of:
– Switchboards
– Variable-Frequency Drives w/ Bypass Starters
– Automatic Transfer Switches
– Manual Transfer Switches
– Programmable Logic Controllers / UPS Backup
– Redundant Level Transmitters / Controllers
– Redundant Bypass “Override” Controls
Pumping Plant Upgrades
Pumping Plants – Group I
– 3 Plant Pilot Project (Telemetry Only)
Pumping Plants – Groups II thru VI
– Approximately 8 Plants per Group
(Electrical Modifications)
Discrete Pumping Plant Projects
– 7 Plants (Pump Replacement, Wetwell
Enlargement, Generator Installation)
1 – 1,500 kW
1 – 750 kW
1 – 650 kW
4 – 300 kW
4 – 200 kW
3 – 80 kW
6 – 50 kW
4 – 30 kW
Engine Generator Sets
24 Diesel Engine Generator Sets
CAT/Quinn Power Systems
Low Bid: $998,000
Asset Managment
1st Generation – MainFrame
Work Request
Background
1st Generation – MainFrame
2nd Generation - Oracle Work Asset
Management (WAM)
Goals
Develop asset information
Optimize PMs
Improve planning and scheduling of work
orders
Track schedules and cost of work
performed
Improve inventory management
Retain knowledge within the organization
Make decisions based on cost and risk
Asset Information?
Asset Information?
Life Cycle of An Asset
Planning and Designing
Operation and Maintenance
Service Initiation
Acquisition/Installation/Construction
Decommissioning and Salvage
Rehabilitation and Replacement
Implementing Asset Management, NACWA, AMWA, WEF, 2007
Asset Information
Special Provisions
O&M Manual
Shop Test Data
Field Test Report
Manufacturer Data
Spec Templates
Warranty Information
Manufacturer Data
SERIAL NO. MANUFACTURER
MODEL NO. DWG NO.
WARRANTY EXP. DATE
Specification Template
Manufacturer Cascade
Capacity (GPM) 6250
TDH (ft) 22.6
RPM 1175
HP 60
Drive VFC
Discharge Flange Size 18”
Discharge Pipe Diam. 18”
Coupling Type Spacer
Bowl Diameter 25”
Equipment Documents
Special Provisions
Shop Test Results
O&M Manual
Spec Template
DOC# 1837340
Bills of Material (BOM)
WAM Building Blocks
JWPCP Effluent Management Existing Ocean Discharge System
8-ft Tunnel
(1937)
12-ft Tunnel
(1958)
Royal Palms
Beach
Asset Management
Background
Goals
Current Status
Pilot Project
Work Orders