Dynamic Sewer Rate Model
Current Accounts and Revenue Distribution
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RateClassiD
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Account
RateClassiD First RateName Number of Est Annual Usage Annual Revenue
Integrated Planning Framework (IPF): Reducing future costs
Integrated Plan
City of Nashua
June 30, 2021
Hazenand Sawyer | City of Nashua — Integrated Plan
Approved Residential Sewer Rates 2021 through 2023
Rate per CCF $2.83 $3.26 $3.26
Quarterly Flat $38.33 $44.08 $44.08
Charge
Average $94.97 $109.22 $109.22
Household
Quarterly Bill
2021 Average Quarterly Bill for Comparison Cities (not including Nashua) = $156.43
2021 NH State Average Quarterly Sewer Bill = $191.25
Comparison of Nashua Residential Sewer Rates with Selected
Regional Rates (2021)
Estimated Quarterly Household Bill based on water consumption of 20 CCF
Neely FlatFee Fee per CCF Household Quarterly Bill
Planned Future Major Capital Expenditures REQUIRED to Protect
Public Health
¢ Over $85 million in upcoming capital investments are required over the next 5 -
15 years :
¢ Pump Stations Rehabilitation (Phase 2): $5.8 million
CMOM Plan (Capacity, Management, Operation & Maintenance): $5.2 million
Class A Biosolids: $5.0 million
Siphons Repair: $2.0 million
Green Infrastructure for Stormwater Control: $3.0 million
Sewer Infrastructure Program: $30.4 Million ($6 million annually)
Governing Documents
Collection System O&M (CMOM/ NPDES)
Long Term Control Plan/ Integrated Plan
(CMOM/ NPDES/ MS4)
Consent Decree (NPDES)
Post Construction Monitoring Plan (NPDES)
Storm Water Management Plan (MS4)
Illicit Discharge Detection and Elimination
(IDDE) Program (MS4)
NOI (MS4/ MSGP)
SWPPP (MSGP)
SPCC (AST/UST)
Permits
NPDES (EPA)
NH SQC (NHDES)
MA AOS (MADEP)
Air (NHDES)
AST (NHDES)
UST (NHDES)
Multi Sector General Permit (EPA)
MS4/ NPDES Phase II (EPA)
Hazardous Waste SQG Certification (NHDES)
Hazardous Waste RCRA (NHDES/ EPA)
Wastewater Facility: By the Numbers
¢ Design Flow = 16 million gallons per day
¢ Peak Design Flow = 110 million gallons per sy i
day |
¢ Average Flow = 12 million gallons per day
¢ Total Flow = 4,611 million gallons per year
¢ Total Septage = 800,000 gallons per year
Collection System: By the Numbers
¢ 446 Miles — Total for Collection System
¢ 81.6 miles combined sewer
¢ 234.4 miles sanitary sewer
¢ 130 miles separate storm
¢ 13 Pump Stations
¢ 9 Combined Sewer Overflow Structures
¢ 4onthe Nashua River
¢ 5 on the Merrimack River
¢ 8 Siphon Chambers
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Overview
Foot Print — 28 Acres
Collects and treats wastewater
Services approximately 89,000 residents ‘%
in the City of Nashua
Also services Hudson, Merrimack and
Tyngsboro, MA
Delivers clean, clear effluent into the
Merrimack River
