presentation of city council wastewater ... - beaumont, ca
TRANSCRIPT
Strength through History & Innovation
City of BeaumontWastewater Treatment Workshop
Workshop Agenda
1. Overview of Beaumont’s Existing Wastewater Treatment Plant
2. Overview of Basin Plan & Compliance Timelines
3. Compliance Options
a) Beaumont Option - Treatment/Salt Management
b) Regionalization Option – YVWD Provides Service
c) Hybrid Option – Beaumont & YVWD Split Services
4. Next Steps
5. Questions & Discussion
Beaumont WWTP Overview – 4 mgd
Headworks
Aeration Basins
Secondary Clarifiers
Tertiary Filters
UV Disinfection
Solids Dewatering
Basin Plan – San Timoteo Management Zone
TaskCompliance
DateStatus
Surface Water Monitoring Program May 30, 2014 Done
R8-2014-0005
Groundwater Monitoring Program Every 3 Years DoneR8-2009-0035
YVWD Desalter and Brine Discharge June 30, 2015 Complete
Beaumont Desalter and Brine Discharge – Plan Submittal Jan. 30, 2015 Complete
Jan. 20, 2015Beaumont Desalter and Brine Discharge – Facilities Complete Jan. 30, 2020 Not Complete
10 year avg. TDS
Beaumont Deliver RW (400 TDS) Dec. 31, 2015 Not Complete10 year avg. TDS
Habitat Maintenance (400 TDS) 2024 Not Complete10 year avg. TDS
Basin Plan – Beaumont Management Zone
TaskCompliance
DateStatus
Surface Water Monitoring Program May 30, 2014 Done
R8-2014-0005
Groundwater Monitoring Program Every 3 Years DoneR8-2005-0066
YVWD Desalter and Brine Discharge June 30, 2015 Complete
Beaumont Desalter and Brine Discharge – Plan Submittal Jan. 30, 2015 Complete
Jan. 20, 2015Beaumont Desalter and Brine Discharge – Facilities Complete Jan. 30, 2020 Not Complete
10 year avg. TDS
Beaumont Deliver RW (330 TDS) Dec. 31, 2015 Not Complete10 year avg. TDS
Habitat Maintenance (330 TDS) 2024 Not Complete10 year avg. TDS
Compliance Options
Beaumont Option
Beaumont Option
Beaumont Option – Current Condition
Beaumont Option – Current Condition
Beaumont Option – Expansion Layout
Beaumont Option – Brine Management
Beaumont Option – Expansion & Upgrade
Facilities to Expand/Upgrade• Headworks • Aeration basin• Secondary clarifiers• Tertiary filtration (Membrane filters)• UV disinfection• Solids dewatering
New Facilities• Solids digestion• Reverse osmosis• Brine disposal
Beaumont Option – Opportunities & Constraints
Opportunities• Control own destiny• Provide recycled water in City and recharge water• Utilize existing assets • Simplest option from a regulatory perspective (compliant with
Basin Plan)
Constraints• Significant upgrades required to maintain compliance• Brine disposal is extremely challenging. YVWD likely not an
option for brine disposal under this scenario.• Land availability around the existing Plant & Cooper’s Creek
habitat.• 1.8 mgd must be delivered to Cooper’s Creek for habitat
conservation
Compliance Options
Regionalization Option
Regionalization Option - Conveyance
YVWD WRF
Beaumont WWTP
Regionalization Option – YVWD WRF
Current Capacity – 8mgdCurrent Demand – 4mgd
Headworks
Primary Treatment
RW Storage, Pumping & Brine Disposal
Secondary Treatment
MF, RO & UV
Solids Digestion & Dewatering
Available Space
Regionalization with YVWD
Opportunities• Capacity available immediately, including desalting and RW• Existing brine disposal facilities (must secure long-term
availability in the IEBL)• Consolidate treatment operations to a single location and lower
O&M costs• Title 22 approval• Available area to expand
Constraints• Requires Basin Plan Amendment• Cooper’s Creek habitat conservation (1.8 mgd delivered to
creek)• Requirement to deliver RW and recharge water to offset
potable demand
Compliance Options
Hybrid Option
Hybrid Approach – Infrastructure Requirements
Upgrade existing Beaumont Plant, including desalting facilities (minimum capacity would be 1.8mgd to maintain habitat in Cooper’s Creek unless an alternate supply is identified)
Build conveyance to connect to YVWD (brine from Beaumont Plant delivered to YVWD for treatment and disposal)
Participate in expansion of YVWD Plant or purchase capacity
Secure long-term capacity in IEBL
Hybrid Approach – Opportunities and Constraints
Opportunities• Utilize existing infrastructure at Beaumont and YVWD Plants• Keep habitat conservation water local• Access to brine disposal through YVWD
Constraints• Requires Basin Plan amendment• Access to YVWD’s Brine Line is uncertain under this scenario• Requires YVWD’s agreement• Could trigger expansion of YVWD Plant (if not then capacity
fees)
Financial Impacts
The cost of these options is unknown at this point, but the implementation of any of the three options will likely be expensive. Impacts will include:
a) Sewer rates
b) Connection fees
Available cash in the Sewer Fund as of February 29th, 2016 equals
$4.97M.
Unaudited Fund Balance as of June 30th, 2015 equals $53.88M
Next Steps
Issue a Request for Proposal (RFP) to evaluate the feasibility and costs of the following three options:
a) Keep Existing Plant – Upgrade/expand the existing Plant, including construction of a desalter and brine disposal facilities.
b) Regionalization with YVWD – Connect to YVWD sewer system and abandon the City’s existing WWTP.
c) Hybrid Approach – Upgrade existing Plant to treat a portion of the flow and deliver a portion of the flow and brine to YVWD for treatment and brine disposal.
Questions & Discussion