Engineering_4th review_06 11 12
North Country Office
100 Glen Street, Glens Falls, NY 12801
P: (518) 812-0513 F: (518) 812-2205
www.chazencompanies.com
Hudson Valley Office (845) 454-3980
Engineers
Environmental Professionals Capital District Office (518) 273-0055
Land Surveyors
Landscape Architects
Planners
June 11, 2012
Mr. Craig Brown
Zoning Administrator and Code Compliance Officer
Town of Queensbury
742 Bay Road
Queensbury New York 12804
Delivered via email only: CraigB@queensbury.net
Re: Pushor-Spellburg 8-lot Subdivision
45 Ellsworth Road
Town of Queensbury, Warren County, New York
Chazen Job # 91104.30
Queensbury Ref No: Subdivision 5-2011
Dear Mr. Brown:
The Chazen Companies (Chazen) has received the latest submission package for the reduced 8-lot
residential subdivision at 45 Ellsworth Road. Based upon our review of the information provided,
Chazen offers the following comments for the Towns consideratio
Stormwater Management and Erosion and Sediment Control
1.In response to Comment 1 of Chazens April 4, 2012 letter, the Applicant has revised the shallow
vegetated retention areas to be infiltration basins. Based upon
infiltration basin will include an infiltration trench that will-ft down from the bottom
elevation of the basin to provide provisions for cold weather. The Applicant shall revise the
Vegetated Infiltration Basin detail to depict the infiltration t
specifications.
2.In response to Comment 3 of Chazens April 4, 2012 letter, the Applicant has added a pocket
pond on Lot 2 to treat runoff from the lower portion of the propHowever, this
pocket pond does not appear to meet the requirements stated in s NYSDEC
SMDM. Specifically, the design shall include both a safety bench and an aquatic bench that
extend outward and inward, respectively, from the normal water edge. In addition, the
permanent deep pool area shall be 4-ft depth or greater.
According to the NYS SMDM Glossary, an aquatic bench is a ten to fifteen foot wide bench
which is located around the inside perimeter of a permanent pool
Town of Queensbury
Pushor-Spellburg - Subdivision 5-2011
June 11, 2012
Page 2
for pocket pond 17P shall also be revised to extend inward from the normal water surface
elevation, but not to exceed an 18-inch depth belowthat elevation. The permanent pool of this
pond shall also be a minimum of 4-feet deep.
3.In response to Comment 3 of Chazens April 4, 2012 letter, the A
swale to treat a portion of the proposed roadway. The Applicant shall add a construction detail
for this practice, in accordance with the requirements outlined in Section 6.5 of the NYS SMDM.
This detail shall include specific material and maintenance requ
recommended that the Applicant add a pea gravel diaphragm along
roadway, to provide pretreatment for sheet flow from the gravel surface.
4.The pond 4P in the Developed HydroCAD modeling has been inappropriately titled a vegetated
forebay. The Applicant shall revise the title to be a vegetated
5.The channel protection volume requirement refers to 24-hr extended detention of the one-year,
24-hr storm event. As such, the values for Provided CPv in the summ
be revised to depict the volume of runoff infiltrated during the 1-yr storm event (instead of the
100-yr storm) for each of the infiltration basins. If the modeling i
encountered during this storm, then the CPv requirement for that facility has been met.
6.In response to Comment 13 of Chazens April 4, 2012 letter, the nt has provided a draft
Common Area Maintenance Agreement discussing the ownership and maintenance
responsibilities associated with the proposed subdivision roadwa
devices. In concert with this agreement, an HOA access/maintenance easements should be
shown on the plans for the roadway and common area stormwater devices subject to the
agreement. Additionally, the applicant shall furnish a description of the maintenance
requirements of each stormwater device in the agreement (or make reference to the SWPPP
and Plans which discusses the same). The proposed agreement should be reviewed and
approved by the Town Attorney and subsequently filed in the County Clerks office.
Conclusions and Recommendations
Based upon our review, all technical comments offered have been
pending the completion of the above items.
If you have any questions regarding the above, please do not hesme at (518) 824-1926.
Sincerely,
Sean M. Doty, P.E., LEED AP
Senior Project Engineer
cc: Pam Whiting, Town Planning Office Administrator (via email)
Keith Oborne, Town Planner (via email)
Joel Bianchi, P.E., Senior Director - Municipal Engineering (via email)
File
R:\9\91100-91199\91104.00_Town of Queensbury PB Engineer\91104.30-T. Queensbury -Lisa Pushor (SUB 5-2011) -Hutchins\Pushor-Spellburg-SUB 5-2011_06-11-12_L4.doc