Town of Littleton Littleton Common Smart Sewers. Public Meeting Presentation March 19, 2018

Transcription

1 Littleton Common Smart Sewers Public Meeting Presentation March 19,

2 Littleton Common Smart Sewers Public Meeting Presentation March 19, 2018 Submit Questions: or Write Your Question on an Index Card & Hand to Our Staff 2

3 Presentation Agenda Executive Summary of Proposed Project What is the Littleton Common Smart Sewer Project? Project Service Area Project Components Collection System (Sewers) CWERC (Treatment & Resource Recovery) Project Costs & Funding Cost Impacts to Properties Anticipated Project Schedule Discussion 3

4 Executive Summary Project Description System of sanitary sewers to serve Littleton Common area, Town properties and limited surrounding areas. Project will service up to ~230 individual properties. Smart Sewers Alternative sewer collection system, using pumps and small diameter pipe network. Community Water & Energy Resource Center (CWERC) approach to treatment and resource recovery. Why Smart Sewers? Focus on environment-conscious approach and resource conservation management. 4

5 Executive Summary Proposed Benefits Limited collection system and small treatment facility, serves focused area without encouraging sprawl. Service to commercial area to support best use of properties that cannot thrive on septic systems. Advanced treatment returns high quality effluent for water reuse (irrigation, etc.) and to recharge aquifer. Recharge preserves local water balance between basins. CWERC recovers renewable energy (thermal and electric) from sewer and trucked wastes, for localized use. CWERC provides local disposal of grease and food wastes. Reduce greenhouse gas/carbon footprint (e.g. trucking). 5

6 6

7 Town s 2017 Master Plan Adopted by May 1, 2017 Annual Town Meeting voters 7

8 Town s 2017 Master Plan 8

9 Executive Summary Project Structure Town will construct and operate system, users will be billed for system costs. Costs to Users Betterment Assessment Portion of capital costs billed to properties fronted by the project. Can be paid up front (one time) or apportioned over 20 years. -> Basis: Equivalent Dwelling Unit (EDU) = Typ. Single Family Home Connection Fee Paid upon connection to the system. Sewer Users Charges Portion of annual operation & maintenance (O&M) costs billed to actual users. Based on actual water use, and billed quarterly. Cost to physically connect property (on-lot work). 9

10 Executive Summary Anticipated costs based on cost modeling to date. Residential Properties Description of Cost Typ. Single Family Residential Property = 1 EDU (~330 gpd) Typ. 2 Family Residential Property = 2 EDUs (~660 gpd) Notes Betterment Assessment: One-Time Payment or Annual Payment (20 years) $20,000 to $22,500 $1,290 to $1,450 $40,000 to $45,000 $2,580 to $2,900 Avg. Payment Sewer Connection Fee $1,500 $3,000 Reduced Initial Fee Annual User Charges $870 to $1,320 $1,880 to $2,820 Varies by usage Typical Cost of Physical (On-Lot) Connection Work ~$5,000 to ~$8,000 ~$6,000 to ~$10,000 Actual cost of connection varies by property. 10

11 Executive Summary Anticipated costs based on cost modeling to date. Commercial/Industrial Properties Description of Cost Typ. Commercial Property 2 EDUs (~660 gpd) Typ. Commercial Property 4 EDUs (~1,320 gpd) Notes Betterment Assessment: One-Time Payment or Annual Payment (20 years) $40,000 to $45,000 $2,580 to $2,900 $80,000 to $90,000 $5,160 to $5,800 Avg. Payment Sewer Connection Fee $3,000 $3,000 Reduced Initial Fee Annual User Charges $1,880 to $2,820 $4,290 to $5,950 Varies by usage Typical Cost of Physical (On-Lot) Connection Work ~$6,000 to ~$12,000 ~$8,000 to ~$16,000 Actual cost of connection varies by property. 11

12 Executive Summary Alternatives Town will need to rebuild/rehabilitate High School WWTF and operate system. Individuals will remain on septic (on-site) systems. Schedule May 2018 Town Meeting will consider $1.5 million for borrowing (2/3 vote required) for initial design phase. Anticipate coming to Fall 2018 Town Meeting for construction funds (initial phases). If approved, project construction could start late 2019 with first connections in early

13 Do you want to know more? Submit Questions: Smart Sewer Details Coming Up Next! 13

14 Littleton Common Smart Sewers Public Meeting Presentation March 19, 2018 Submit Questions: or Write Your Question on an Index Card & Hand to Our Staff 14

15 What is the Littleton Common Smart Sewer Project? Summary of Planning Area Planning Area & Project Area Limits Business Districts - Village Common District (VCD) & Village Overlay District (VOD) Town Properties - High School, Middle School, Russell School, Town Hall, Fire Dept., LELWD, Highway Dept., Housing Authority Limited Adjacent Residential Areas - Shattuck St, Adams St, parts of Goldsmith St and King St, and some adjacent homes Number of Parcels in Service Area: Commercial/Industrial ~81 properties Residential ~134 properties Municipal/Institutional ~12 properties 15

16 16

17 What is the Littleton Common Smart Sewer Project? Work Completed to Date - Refinement of Service Area & Design Flows Screening of Groundwater Discharge Sites Hydrogeological Analysis of Best GWD Site Screening & Shortlist of Best CWERC Sites Advanced Review of CWERC Technologies Funding Options Identify, Discuss & Apply Updated Project Costs & Financial Plan Program of Project Workgroup Meetings 17

18 What is the Littleton Common Smart Sewer Project? Summary of Projected System Flows Design Flow Basis Based on Title 5 criteria (maximum daily flow) and/or historic water use data (average daily flow) Existing design flows for properties with larger treatment systems (e.g. small wastewater treatment systems) Allowance for redevelopment of commercial properties Flow Development Maximum Daily Design Flow Basis Total Service Area ~300,000 gallons per day 18

19 What is the Littleton Common Smart Sewer Project? Project Components Sewer Collection System System of small diameter, low pressure sewer pipes Individual grinder pumps located on serviced properties Small pump stations to transmit flow to CWERC Effluent and Reuse Water System System of pipes to transmit final effluent and reuse water to reuse locations and groundwater discharge site Community Water & Energy Resource Center (CWERC) 19

20 What is the Littleton Common Smart Sewer Project? Community Water & Energy Resource Center (CWERC) Wastewater receiving and treatment systems, designed to maximize recovery of resources Anaerobic digester system to process treatment plant waste solids, and hauled food waste, grease & septage Energy recovery system for converting digester biogas into thermal and electric energy (co-generation) Production of high quality effluent for reuse water Production of digested waste solids for beneficial reuse 20

21 What is the Littleton Common Smart Sewer Project? Proposed Location of Facilities: Groundwater Discharge Under High School fields (location of current Littleton HS WWTF discharge) CWERC Littleton Highway / LELWD site on Route 2a (Towncontrolled), or a privately-owned site (e.g. IBM site on King Street) 21

22 Project Costs Project costs based on advancement of planning and conceptual design information generated to date. Summary of Project Costs (entire service area): Planning, Design, Land & Legal Construction of CWERC (with GWD) Abandonment of HS WWTF & PS Collection System (with grinder pumps) Effluent and Reuse Pipeline Systems Contingency & Construction Engineering Total Project Cost (all phases) $ 3.3 million $17.8 million $ 0.3 million $ 5.5 million $ 2.2 million $ 6.7 million ~$36 million Costs mitigation will include phasing of construction. 22

23 Project Costs - Funding Project costs to be mitigated by available funding: State Revolving Fund (SRF) Loan Program (Low Interest Loan) State MassWorks and/or Federal EDA Grants Federal or State Clean Energy (DOE) Massachusetts Sustainable Water Management (SWM) Grants Special Funding through State Legislation (Line Item) Town Paving Program Funds (Chapter 90) Other State, Local or Private Funding Current target is at least $4 million in grant assistance. Anticipated funding under SRF 2% construction loan. 23

24 Project Costs Project Structure Town will construct and operate system, users will be billed for system costs. Costs to Users Betterment Assessment Portion of capital costs billed to properties fronted by the project. Can be paid up front (one time) or apportioned over 20 years. -> Basis: Equivalent Dwelling Unit (EDU) = Typ. Single Family Home Connection Fee Paid upon connection to the system. Sewer Users Charges Portion of annual operation & maintenance (O&M) costs billed to actual users. Based on actual water use, and billed quarterly. Cost to physically connect property (on-lot work). 24

25 Project Costs Anticipated costs based on cost modeling to date. Residential Properties Description of Cost Typ. Single Family Residential Property = 1 EDU (~330 gpd) Typ. 2 Family Residential Property = 2 EDUs (~660 gpd) Notes Betterment Assessment: One-Time Payment or Annual Payment (20 years) $20,000 to $22,500 $1,290 to $1,450 $40,000 to $45,000 $2,580 to $2,900 Avg. Payment Sewer Connection Fee $1,500 $3,000 Reduced Initial Fee Annual User Charges $870 to $1,320 $1,880 to $2,820 Varies by usage Typical Cost of Physical (On-Lot) Connection Work ~$5,000 to ~$8,000 ~$6,000 to ~$10,000 Actual cost of connection varies by property. 25

26 Project Costs Anticipated costs based on cost modeling to date. Commercial/Industrial Properties Description of Cost Typ. Commercial Property 2 EDUs (~660 gpd) Typ. Commercial Property 4 EDUs (~1,320 gpd) Notes Betterment Assessment: One-Time Payment or Annual Payment (20 years) $40,000 to $45,000 $2,580 to $2,900 $80,000 to $90,000 $5,160 to $5,800 Avg. Payment Sewer Connection Fee $3,000 $3,000 Reduced Initial Fee Annual User Charges $1,880 to $2,820 $4,290 to $5,950 Varies by usage Typical Cost of Physical (On-Lot) Connection Work ~$6,000 to ~$12,000 ~$8,000 to ~$16,000 Actual cost of connection varies by property. 26

27 Alternatives for Properties Alternatives Town properties will continue to rely on the High School WWTF (current operating costs $105,000 per year). HS WWTF is aging (~15 years old) and will need significant repair/rehabilitation (costs could exceed $1 million). Individual properties will remain on septic (on-site) systems and small treatment systems. Many parcels limited due to site soils/groundwater conditions. Typical cost for single family septic system in Littleton is $35,000 or more. Commercial systems often cost more. Local wastes (septage/food waste) will continue to be trucked long distances for regional disposal. 27

28 Decision Making Project Planning Goal Allow property owners to optin or opt-out of the Smart Sewer system. Opt-out decision - Remove property from the sewer district no possibility of future connection (despite individual conditions/failures). Opt-in decision Allows for immediate connection (advantage of lower fees) or deferred connection. Planned system will need to be reconfigured and finance plan adapted (e.g. streets removed) to provide a cost effective overall program sized for service area. 28

29 Anticipated Project Schedule May 2018 Town Meeting will consider $1.5 million for borrowing (2/3 vote required) for initial design phase. Preliminary design and cost updating in summer Application for funding assistance in summer/fall Additional public outreach in late summer/fall of Anticipate coming to Fall 2018 Town Meeting for construction funds (initial phases). If approved, project construction could start late 2019 with first connections in early

30 Questions & Discussion 30