Transcript LATERAL PROGRAM CONSIDERATIONS

Sewer Smart Summit 2006
ABAG’s Sewer Back up Prevention Program
Presented by
E.J. Shalaby
District Manager,
West County
Wastewater District
May 17, 2006
West County Wastewater District
Background
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District Founded in 1921
Currently provide service to 90,000 residents
– San Pablo, Pinole, El Sobrante, Tara Hills, East Richmond,
Rollingwood, Bayview
235 miles (1.3 mft.) of Gravity Sewer Lines within 17 sq. miles
Wastewater Treatment Facility Capacity 12.5 MGD
– Avg. dry weather flow 8.0 MGD
– Peak wet weather flow 70.0 MGD
– EQ Basin Shaves Peaks, 53 MG Capacity
Approximately 40,000 Building Sewer connections
West County Wastewater District
Capacity Assessment Study
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Identified 7 Mainline Capacity Concerns Within our Collection
System
– Potential of $20 million in cost
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Increase/Repair Sewer System to Accommodate Flows
– Does not Control Flows from Defective Private Laterals
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Ongoing CCTV Assessment for Structural Defects
– Rating incorporated into CIP
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Fully Funded Annual Capital Improvements Program
– WCWD Collection System Improvements
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Private Building Laterals Excluded from Study
– Not under Districts Control
Building Sewer Facts
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Building Sewers Privately Owned
Total Building Sewer Footage - 230 miles (1.21 mft.)
– Equals total footage of mainline sewers
Building Sewer Make - Up
– Generally poor pipe (VCP) material
– Illegal or improper connections and faulty joints
High source of Inflow/Infiltration (I/I)
Less than 50% of Building Sewers have Backwater
Overflow Device (BOD)
Building Sewer Defects
Addressing Building Sewer Defects
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Building Sewer Replacement Grant Program
– Homeowner Incentive to Replace Defective Laterals
– Up to $2,000 for Lateral Replacement
– Address 230 Miles of Private Sewer System
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Return on Invest for the District
– Reduce sources of I/I
– Retain Capacity of Existing System
Building Sewer Replacement Grant Program
“The gift of public funds, such as any expenditure
which benefits an individual or small class of
individuals only, with no benefit to all of the
residents of the political entity is prohibited”
(CA State Constitution, Art. 16, Sec. G)
 I/I reduction benefits All Districts Residents
– Retains Maximum Capacity of Sewer System
 July 1, 2004 Board of Directors approved
$300,000 annually (Capital Reserve Fund)
 Program in effect until Canceled by the Board
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BSRGP Process
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BSRGP application process
– TV or air test
• District (TV only) v. Independent Contractor
– One Contractor quote
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WCWD permit required
WCWD inspection required
BOD installation mandatory
Proof of payment
Reimbursement 4-6 weeks
BSRGP Process
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Reimbursement up to maximum amount or 50% of actual cost
whichever is less
– Entire replacement up to $2,000 max.
– Partial replacement/repair up to $1,000 max.
Typical cost of entire building sewer replacement
$4,500-$8,000
Home owner can perform work
– provide receipts of materials
– labor not covered
Backwater Overflow Device (BOD)
Ordinance
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Ordinance Passed on February 2006
 Implementation April 1, 2006
 Required on All Sale or Transfer of Property
 Realtors in Support of Ordinance
Future - Lateral Inspection Ordinance
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Required on All Sale or Transfer of Property
 Realtors have shown Support of Ordinance
 Implement with Realtors as Partners
Success/Benefits
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Since July 1, 2004
– 200 approvals
– $400,000 WCWD spent to date
– $1.5 Million in Lateral Repairs
Expenditure to reduce I/I in building sewer is money well
spent to retain/increase system capacity
Improve Reliability to Homeowner – Good PR
BOD installation
– Reduces backflows into homes - $25,000/back-up
– Reduces damage to irreplaceable items
– Limit liability for District
Questions ?
Contact Information:
West County Wastewater District
2910 Hilltop Drive
Richmond, California 94806
510-222-6700
www.wcwd.org