HomeMy WebLinkAbout25SUB7 & 25SP1 TE Comments 2 11-17-25Page 1 of 4
11/17/2025
CLA Engineers, Inc. | 317 Main Street, Norwich CT 06360 | 860.886.1966 | www.claengineers.com
November 17, 2025
Meredith Badalucca, Assistant Planner
Town of Montville
310 Norwich-New London Tpke., Uncasville, CT 06382
Via Email: mbadalucca@montville-ct.org
RE: 25SUB7 – 23-Lot Residential Resubdivision
47 Sharp Hill Road, Montville, Connecticut
CLA-7873N
Dear Meredith:
CLA Engineers, Inc. (CLA) has received the application documents for the proposed resubdivsion
of 47 Sharp Hill Road on the Town Form Repository:
https://www.townofmontville.org/form-repository/25-sub-7-47-sharp-hill-road/
CLA has performed a review of the latest revised documents and offer the following comments:
1. A plan depicting only the proposed public improvements should be provided (similar to
the erosion & sedimentation control plan). ADDRESSED (Sheet PI-1 provided)
2. The sight line easement over #45 Sharp Hill Road must be conveyed to the Town of
Montville with or prior to acceptance of the road. ADDRESSED (The Applicant’s
Engineer has acknowledged this requirement in the response cover letter)
3. The area of total site disturbance, including the lot development should be indicated on
the plans. ADDRESSED
4. How will individual lots be developed? It appears that grading would be required across
multiple lots to facilitate development. More details or a narrative should be provided.
ADDRESSED (in cover letter)
5. The potential lot development along the west side of the road may intercept the
groundwater table. Provisions to mitigate groundwater breakout and footing drain
discharges should be considered. ADDRESSED
ADDITIONAL COMMENT: An additional DMH or clean-out to grade should be
provided at bend near the bioretention basins. The Town of Montville should not be
responsible for the operation or maintenance of the underdrain trench and piping
beyond the right-of-way limits. Easements and right of access and maintenance
should be provided across the subject properties.
CLA Engineers, Inc.
Civil Structural Survey
317 MAIN STREET NORWICH, CT 06360 (860) 886-1966 (860) 886-9165 FAX
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11/17/2025
CLA Engineers, Inc. | 317 Main Street, Norwich CT 06360 | 860.886.1966 | www.claengineers.com
6. It appears a diversion berm/swale is proposed to the west of lots 13 and 14 through the
open space. More detail of this diversion should be provided including contributing
watershed, materials, and sizing. Who will own and maintain this diversion?
ADDITIONAL COMMENT: The plan call-out refers to a gravel swale, a riprap
swale detail is provided. Riprap is recommended; the final plans should be
coordinated to indicate riprap swale. The Town of Montville should not be
responsible for the operation or maintenance of the swale beyond the open space
limits. Signage should be placed within the open space along the swale indicating
there should be no dumping or filling of the swale.
7. The new road should be constructed in accordance with the Town Road Standards. The
road should be designed as a “Local Street”. ADDRESSED
8. The town road cross section detail should be provided on the plans. ADDRESSED
9. The vertical curve 2+01 to 3+56 does not meet the minimum k-value. ADDRESSED
10. Roadway centerline horizontal data should be added to the plan & profile sheet.
ADDRESSED
11. Snow storage reserve area should be indicated at the turnaround per Section 70E.3 of the
Town Road Standards. ADDRESSED
ADDITIONAL COMMENT: The call-out on the final plans should be edited to
indicate that the snow storage areas shall remain free of obstructions including
fences, landscaping, and driveways.
12. The yard drain system should be eliminated and catch basins proposed at each edge of
road. ADDRESSED
13. Underdrain should be provided along the uphill side of the road. ADDRESSED
14. Access must be provided to all levels and structures of the water quality/bioretention
basins for future maintenance. A gravel or paved (depending on slope) access drive should
be provided for public work equipment and personnel. ADDRESSED
15. The water quality/bioretention basin area should be fenced off from public access. Gates
should be provided for Public Works access. ADDRESSED
ADDITIONAL COMMENT: A chain link fence construction detail should be
included on the final plans (see Road Standards Figure 24).
16. A section view through the water quality/bioretention basins should be provided.
ADDRESSED
17. Will dams be created in water quality/bioretention basins that will require CTDEEP
registration & inspection? ADDRESSED
18. The Stormwater Management Report indicates an unsuitable layer of soil is to be removed
from the basin area. This should be indicated in the plan/narrative. ADDRESSED
19. A catch basin should be provided in Sharp Hill Road, upgrade of the new intersection,
over the existing culvert. ADDRESSED
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11/17/2025
CLA Engineers, Inc. | 317 Main Street, Norwich CT 06360 | 860.886.1966 | www.claengineers.com
20. The infiltration trench should be reconsidered. The maintenance and operations will be a
burden on the Public Works Staff. ADDRESSED
21. Street trees should be provided as part of the public improvements. PARTIALLY
ADDRESSED: Locations have been shown. Suitable native street tree species should
be proposed and a planting detail provided on the final plans.
22. Test pit data for the TP#1-TP#9 series should be provided. ADDRESSED
23. References to the 2002 E&S manual on sheet 12 should be changed to 2024.
ADDRESSED
24. Construction inspection for public improvements will be required in accordance with the
Town Road Standards, Section 50. ADDRESSED
25. A bond estimate should be provided. ADDRESSED (construction cost estimate
provided is acceptable)
26. It appears that the CTDEEP General Permit for the Discharge of Stormwater and
Dewatering Wastewaters from Construction Activities will be required. Copies of the
registration and inspection reports should be provided to the Town throughout
construction. ADDRESSED (the Applicants Engineers has acknowledged this request
in the cover letter)
27. Road monumentation must be installed and reflected on the record plan prior to
acceptance. ADDRESSED (the Applicants Engineers has acknowledged this
requirement in the cover letter)
Stormwater Management Report
28. The Town has historically had drainage issues around #19 Sharp Hill Road, including
runoff issues and icing in Sharp Hill Road. Impacts to the property and catch basin located
within #19 Sharp Hill Road and to Sharp Hill Road from the proposed development should
be evaluated.
ADDITIONAL COMMENT: The Applicants Engineer noted the installation of the
new catch basin in Sharp Hill Road will help to collect and convey stormwater to
reduce the potential for ponding/icing downgradient of the development. However,
the previous icing issues in Sharp Hill Road was primarily from overland flow from
the properties surrounding #19 Sharp Hill Road and potentially from the subject
property (excerpt of the Town GIS mapping attached). The Town previously
installed storm drainage to capture flow and mitigate the icing issues. Please provide
commentary on the location and flow from the stormwater discharge for this
proposed development and potential impacts to the downstream properties, existing
stormwater system and Sharp Hill Road. In particular changes in peak flow and
runoff volume for the combined Analysis Lines 1, 2, and 4.
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11/17/2025
CLA Engineers, Inc. | 317 Main Street, Norwich CT 06360 | 860.886.1966 | www.claengineers.com
29. The report refers to a site property manager. Will there be an Homeowners Association
and property manager that maintains the development? ADDRESSED
30. The conclusion statement refers to Lebanon. ADDRESSED
ADDITIONAL COMMENTS
1. The bioretention basin construction narrative requires inspection by the design
engineer. CLA recommends that the design engineer provide a letter certifying that
the bioretention basins have been constructed in accordance with the plans prior to
acceptance by the Town.
2. The easement between Lots 14 and 15 should also include drainage easement
language and rights of access by the Town for operations and maintenance of the
storm drainage infrastructure and open space.
Thank you for the opportunity to provide this review. Please feel free to call me at our office or
email khaubert@claengineers.com with any questions.
Very truly yours,
CLA Engineers, Inc.
Kyle Haubert, P.E.
November 16, 2025
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Town of Montville, CT
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