attachment-1-rfp-des-2026-14.pdf
PDF 256 KB Posted
- Attached to
- Wastewater Flow Metering Services
- Solicitation number
- RFP DES 2026-14
- Issued by
- Belknap County, New Hampshire
About this file
This is a Request for Proposal (RFP) attachment for Wastewater Flow Metering Services issued by the State of New Hampshire, specifically detailing flow meter and rain gauge locations within the Winnipesaukee River Basin Program (WRBP) service area. The document identifies nine required flow meter monitoring sites across multiple municipalities in Belknap and Merrimack counties, including locations in Laconia, Gilford, Tilton, Franklin, Sanbornton, and Belmont. Service locations vary in existing infrastructure, with gravity sewer depths ranging from approximately 4 to 15 feet and pipe diameters ranging from 6 to 60 inches. The contract scope includes installation, monitoring, and reporting of flow data using Area Velocity (AV) and Ultrasonic (US) metering technologies, with contractors required to report the most accurate available meter results or utilize Manning Equation calculations. The RFP also identifies two optional temporary or permanent flow meter locations at the Opechee and Soda Brook Homes sites, pending future determination.
The contract additionally requires maintenance and monitoring of four rain gauge stations installed at Winnipesaukee River Basin Program pump stations in Franklin, Belmont, Laconia (two locations), utilizing existing ISCO 674 rain gauges with ISCO 2105 Interface modules. One required site, STP-1 at the Franklin Wastewater Treatment Plant, mandates daily flow results between 7 a.m. and 7 p.m. and 12 a.m. to 12 a.m., with accessibility limited to specified hours. Several monitoring sites feature access constraints, including locations requiring police traffic details, coordinated property access, walk-in access at public beach facilities, and sites positioned within Department of Transportation rights-of-way or railroad corridors. Temporary meter types for optional locations require pre-approval by WRBP prior to deployment.
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Other files
| File | Type | Posted |
|---|---|---|
| attachment-6-rfp-des-2026-14.xlsx | XLSX spreadsheet | |
| attachment-5-rfp-des-2026-14.pdf | ||
| attachment-3-rfp-des-2026-14--1-.pdf | ||
| attachment-4-rfp-des-2026-14.pdf | ||
| rfp-des-2026-14--1-.pdf | ||
| attachment-7-rfp-2026-des-14.xlsx | XLSX spreadsheet | |
| attachment-2-rfp-des-2026-14.pdf | ||
| addendum-1-rfp-des-2026-14.pdf |
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Text version
TABLE 1- Site Locations included in Service Contract (see Appendices for more detailed information)
Site Name (Flow Direction) Physical Address
Town/City, County
Property Ownership Existing Conditions - gravity sewer location
Meter Other Information
ML-1 (Meredith to Laconia) off Needle Eye Rd.
(private) and Maiden Lady
Cover Dr., Laconia, Belknap
DOT RR ROW Upstream gravity sewer; 36” pipe in MH #206. Approx.
depth 10’.
AV On bank above railroad tracks;
accessible from Needle Eye Rd.
Oxbow (Gilford to Laconia) 403 Weirs Rd., Route 11B, east of Magnum Rd.
Gilford, Belknap
Timber Bay Condo
Association/DOT ROW
Existing AV and Ultrasonic upstream of 3” Parshall flume at existing MH in 36” gravity sewer. Approx.
depth 15’.
AV & US Existing meter not to be utilized.
Manhole located in DOT Road ROW.
McIntire Circle (Gilford to
Laconia)
Route 3 Weirs Blvd./Lake
St. Laconia, Belknap
WRBP ROW Existing Ultrasonic over 10”
Palmer Bowlus flume in 15” gravity sewer in Meter
Station #2. Approx. depth
15’.
US Existing meter not to be utilized.
Tilton Main St (Tilton to
Franklin)
298 Main St., Tilton, Belknap
Town of Tilton Existing Ultrasonic over 6”
Parshall Flume, AV upstream in 18” gravity sewer. Approx. depth 4’.
AV & US Existing meter not to be utilized.
Town parking lot with TN1 in same parking lot.
GL-1 (Gilford to Laconia) 303 Gilford Ave. off Route
11A near Hounsell Ave.
Gilford, Belknap
Town of Gilford 12" gravity sewer; Approx.
depth 12'; Gilford MH #404
AV West of Housnell Ave.; south of
Route 11A near Jewett Brook (cross country location)
Belmont Beach (Belmont to
Tilton)
Belmont Public Beach, Belmont, Belknap
Belmont Public Beach access at 43 Leslie E
Robert Dr. meter MH in
DOT RR ROW
60" Belmont gravity sewer
MH #39
AV & US Walk-in location.
TS-1 (Tilton to Sanbornton) 6 Lower Bay Rd. at Laconia
Rd. (Route 3/11)
Sanbornton, Belknap
DES-WRBP/Town of
Sanbornton
AV upstream in 18” pipe at
MH#99. US over existing 10"
Palmer-Bowlus flume
Approx. depth 12’.
AV & US Off roadway in grassy area.
TF-1 (Tilton to Franklin) 636 Central St. (W. Main
St. Route 3/11) Tilton, Belknap
DOT ROW Existing 10” trapezoidal flume in 18” gravity sewer.
Approx. depth 8’.
AV & US In the travel lane of DOT roadway.
Required Tilton police detail.
STP-1 (Franklin WWTP
Influent)
528 River St. at WRBP
Franklin WWTP Franklin, Merrimack
DES-WRBP WWTF 60” pipe at MH2. AV upstream and US in MH of
Headworks Building.
Approx. depth 8’.
AV & US Outside WWTP compound fence;
accessible from River St. 7am-7am and 12am to 12 am daily flow results required.
Note that several loactions have both Area Velocity (AV) and Ultrasonic (US) flow meters installed.
Contractor to report the most accurate installed flow meter results or use Manning Equation calculations for results.
TABLE 2: Optional flow meter locations (Temporary or permanent - TBD)
Site Name (Flow Direction)
Owner Other information Meter
Opechee (DAS State School campus to Laconia)
NH Dept of Administrative Services/WRBP ROW - in park off Parade Rd. Laconia, NH;
open field
Manhole #504 on 10" gravity sewer; Approx. depth 5 feet; in open field off Parade Rd. North of Right Way Path; Laconia, NH.
AV
Soda Brook Homes (Northfield to Belmont)
Soda Brook Homes (sewer); Corliss (property & field access); Belmont, NH
Existing Manhole on 8" gravity pipe; Approx. depth 5 feet; immediately across 74 South Rd. WRBP Belmont PS in field; coordinate with Corliss for access
AV
Temp meter at Opechee was ISCO 2160 Laser AV unit.
Temp meter at Soda Brook was ISCO 2150 AV unit.
Temp Meter type to be pre-approved by the WRBP.
TABLE 3: Rain Gauge Locations - WRBP pump stations (PS)
Site Name Physical address Other information River St. PS 101 River St., Franklin 1 story brick; installed on roof Belmont PS 74 South Rd, Belmont 1 story brick; installed on roof Maiden Lady PS 763 Scenic Rd, Laconia 1 story brick; installed on roof Winnisquam PS 202 Water St, Laconia 1 story brick; installed on roof
Current equipment is ISCO 674 rain gauges with ISCO 2105 Interface modules.
| Tables 1 - 3 flow meter and rain gauge locations.pdf |
| Tables 1 - 3 flow meter and rain gauge locations (2).pdf |
| temp |
| Tables 1 - 3 flow meter and rain gauge locations (3).pdf |
| rain gauges |
File details come from the government source that posted it. Updated .