Engineer Comments THE
Chazim Linil Engineers
Land Surveyors IN O IF�TI�N COUNTRY OFFICE
I
Planners
Environmental&.Safety Professionals 375 Bay Road
COMPANIES" Landscape Architects Queensbury, NY 12804
Transportation Planners&Engineers
1947— 2017 YEARS P: 518.812.0513 or 888.539.9073
www.chazencompanies.com
April 12, 2018
Mr. Craig Brown
Zoning Administrator and Code Compliance Officer
Town of Queensbury
742 Bay Road
Queensbury, New York 12804
Delivered via email only: CraigB@gueensbury.net
Re: Randolph Jr& Denise Bardin
Town of Queensbury, Warren County, New York
Chazen Project#91800.15
Queensbury Ref#SP28-2018
Dear Mr. Brown:
The Chazen Companies (Chazen) has received a submission package from your office for the above
referenced project. The applicant intends to develop an existent vacant lot into a single family home.
Submitted information includes the following:
• Site Plans and Details, prepared by Hutchins Engineering, dated February 25, 2018;
• Survey, prepared by Bardin Land Surveying, P.C., dated March 10, 2018;
• Stormwater Pollution Prevention Plan prepared by Hutchins Engineering, dated March 14, 2018;
and,
• Site Plan Review Application, dated March 14, 2018.
Your office has requested that we limit our review to the design of stormwater system as it relates to
compliance to local, state or relevant codes and regulations. Based upon our review, Chazen offers the
following comments for the Town's consideration:
Stormwater Management& Erosion and Sediment Control:
1. The project proposes to disturb an area of 1.7 acres that typically requires the preparation of a
SWPPP and coverage under the General Permit(GP-0-15-002). However, in accordance with I.F.6
of GP-0-15-002,the project may be ineligible for coverage under the General Permit.
Part I.F.6 states "Construction activities for residential, commercial and institutional projects:
a. Where the discharges from the construction activities are tributary to waters of the state
classified as AA or AA-s;and
b. Which disturb one or more acres of land with no existing impervious cover;and
Chazen Engineering, Land Surveying&Landscape Architecture Co., D.P.C.
Chazen Environmental Services, Inc.
The Chazen Companies, Inc.
Town of Queensbury
Randolph Jr&Denise Bardin
April 12,2018
Page 2
c. which are undertaken on land with a Soil Slope Phase that is identified as an E or F, or the map
unit name is inclusive of 25% or greater slope, on the United States Department of Agriculture
("USDA")Soil Survey for the County where the disturbance will occur."
It does not appear that the SWPPP contains a soils map for the site that contains the soil slope
phase.The Applicant to provide a soil map accordingly.
If construction activities are undertaken on slopes identified in Part I.F.6(c), the project may be
ineligible for coverage under the General Permit. The Applicant to clarify. It is noted that
conformance to the General Permit requirements will be performed once eligibility is determined.
2. This project falls within the Lake George watershed and will be subject to the stormwater
management requirements set forth in section 147-11 of the Town code, for projects within the
Lake George Park.The project proposes to disturb over 15,000 square feet and the project would
be classified as a "major" project. In accordance with town code section 147-11.I(3)(c), "major"
project stormwater control measures shall be designed so that there will be no increase in runoff
from a ten-year-frequency/twenty-four-hour-duration storm event following development over
the predevelopment volume; and for storm events exceeding the ten-year design storm, the
stormwater control measures shall function to attenuate peak runoff flow rates for a twenty-five-
year-frequency storm to be equal to or less than predevelopment flow rates. Due to the following
stormwater management and HydroCAD comments below,conformance to 147-11.I(3)(c)cannot
be performed at this time.
3. The HydroCAD model appears to model the existing conditions subcatchments as "woods, fair".
Pursuant to Town code Section 147-11.I(3)(d)[6] the existing conditions subcatchments shall be
modeled as "woods, good" condition.The Applicant to revise accordingly.
4. The intent of 147-11.I(3)(d)[6] includes that infiltration practices must be provided for all newly
impervious areas. It does not appear that stormwater management practices are provided the
majority of the new access road.The Applicant to revise the design accordingly.
5. Proposed condition subcatchment 2S does not appear to include the impervious surfaces
proposed on the site plan.The Applicant to revise accordingly.
6. The HydroCAD model and pre/post-development maps do not include the entire driveway, the
parcel 57 portion is not included. The Applicant to revise the HydroCAD model and pre/post-
development maps to include all site improvements.
7. In accordance with Part I.F.4 and Part I.F.8 of GP-015-0-002 (Endangered and Threatened Species
and Archeologically Sensitive areas, respectively)the Applicant has contacted DEC and NYSOPRHP
and is awaiting determination. The Applicant to revise the SWPPP with the determinations once
received.
8. Section 147-11(I)(3)(C)[3] of the Town code states "Infiltration devices shall be designed such that
the bottom of the system will be a minimum of two feet above the seasonal high groundwater
level to be realized following development. Where compliance with this requirement would
prevent compliance with Subsection 1(3)(c)[5] below, compliance with this requirement may be
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Town of Queensbury
Randolph Jr&Denise Bardin
April 12,2018
Page 3
waived..."There does not appear to be a test pit in the area of the proposed infiltration area to
show conformance with this section of the Town code.The Applicant to conduct soil test pits and
update the plans with the results.
9. Section 147-11(I)(3)(C)[6] of the Town code states 'Infiltration devices shall be designed based on
the infiltration capacity of the soils present at the project site. Soil evaluation methods shall be in
accordance with Schedule 8, Part II, Soil Evaluation Methods." There does not appear to be
infiltration tests in the area of the proposed infiltration practice. The Applicant to conduct
infiltration tests and update the plans with the results.
10. The Applicant to clarify if the wetland boundaries were validated by the authority having
jurisdiction.
11. There does not appear to be a concrete washout detail provided. The Applicant to add to the
plans.
12. The stabilized construction entrance does not appear to be placed at the entrance to the site.The
Applicant to revise accordingly.
13. It is difficult to discern what pretreatment devices are provided for the infiltration basin in
accordance with town code 147-11.I(3)(d)[3] and the SMDM. The Applicant to clarify or revise
accordingly.
In the event the Planning Board or Town staff have any questions or require additional information,
please do not hesitate to contact me at(518) 824-1926.
Sincerely,
Sean M. Doty, P.E., LEED AP, CMS4S
Principal
Director, Municipal Engineering Services
cc: Sunny Sweet,Town Planning Office Administrator(via email)
Laura Moore,Town Land Use Planner(via e-mail)
File
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