CITY OF NASHUA, NH PERHAM ST
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Persistent roots entire length
Perham Street —built 1893 (15” clay)
Blockage and collapse Collapse and top fracture
Main Street —built 1869 (15” concrete)
Annual Sewer Infrastructure Improvements
Rehabilitation of Pipe and Structures
¢ Point repair
¢ Cure-in-Place Pipe (CIPP) Lining
° Epoxy Lining
Hinged fractures at top of pipe Post-lining
Gilman Street — 20 inch clay built 1910
Annual Sewer Infrastructure Improvements
Rehabilitation of Pipe and Structures
¢ Point repair
Ash St - built 1889 (12” concrete) -crown fractures Ash St — built 1915 (12” clay) - collapse
and collapse
Annual Sewer Infrastructure Improvements
Assessment of Pipe and Structure Condition
¢ Identify pipe to assess — Prioritized by age,
material, and critically of location
¢ Cleaning of pipe
¢ Closed Circuit Television (CCTV) inspection
¢ Review video and determine if and what
rehabilitation is required
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Fifield St — built 1919 (12” clay) — alignment offset Myrtle St — built 1879 (24” brick)
Collection System by the Numbers
¢ 1860's - first sewers installed
¢ 1869 - 32 by 40 inch brick sewer constructed under Main Street to Nashua River
¢ 1885 — 40 by 54 inch brick sewer constructed under East Hollis Street to Merrimack River
¢ 6 to 108 inches — diameter of sewers
¢ 3 to 31 feet - depth of sewers TT 2.
¢ 31.6 miles of pipe over 100 years old ptpine ben aR
e 4.4 miles of brick sewers Sree 2
¢ 74.5 miles of asbestos cement pipe Direction:JU
¢ 37.9 miles of sewers under arterial roads
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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 drain
¢ 13 Pump Stations
9 Combined Sewer Overflow Structures
¢ 4on the Nashua River
¢ 5 onthe Merrimack River
8 Siphon Chambers
e 22 barrels
¢ 6” to 60” diameter
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FY 21 Sewer Bond Presentation to Board of Aldermen
Annual Sewer Infrastructure Improvements
April 26, 2021
Special Board of Aldermen 04-26-2021 Page 9
Chairman Dowd closed the public hearing on R-21-128 at 7:30 p.m.
ADJOURNMENT
MOTION BY ALDERMAN O’BRIEN THAT THE APRIL 26, 2021, SPECIAL MEETING OF THE BOARD
OF ALDERMEN BE ADJOURNED, BY ROLL CALL
A viva voce roll call was taken to adjourn the Board of Aldermen meeting which resulted as follows:
Yea: Alderman O’Brien, Alderman Klee, Alderman Dowd, Alderman Caron,
Alderman Clemons, Alderwoman Lu, Alderman Jette, Alderman Schmidt,
Special Board of Aldermen 04-26-2021 Page 8
Captain Dan Mederos, Nashua Police
Special Board of Aldermen 04-26-2021 Page 7
Chairman Dowd
All set Linda?
Alderman Harriott-Gathright
Follow up. Have you ever used them before this particular bidder? Just curious.
Captain Dan Mederos, Nashua Police
We have not used Turnstone yet. Myself and Purchasing Manager Kelly Parkinson had spoken with
several of their references and they’ve used but here in the city they have done work recently at the Boys
and Girls Club where they did do some minor renovations over there and came highly recommended.
