Stormwater Summary Report PRELIMINARY
STORMWATER MANAGEMENT SUMMARY
FOR
HARBOR FREIGHT TOOLS
871 US Route 9
Town of Queensbury
Warren County,New York
Prepared For:
Queensburywood, LLC
1529 Western Avenue
Albany,NY 12203
November 15, 2017
Project No. 4917A
Prepared By:
Joseph J. Bianchine, P.E.
ABD Engineers, LLP
411 Union Street
Schenectady, NY 12305
(518) 377-0315
PRELIMINARY
STORMWATER MANAGEMENT SUMMARY
HARBOR FREIGHT TOOLS
871 US Route 9
Town of Queensbury
WaiTen County,New York
TABLE OF CONTENTS
ITEM PAGE
PROJECT LOCATION...........................................................................................l
GENERAL SITE DEVELOPMENT.......................................................................1
SOIL TYPES, GROUNDWATER&TOPOGRAPHY..........................................1
STORMWATER MANAGEMENT PLAN............................................................l
SUMMARY.............................................................................................................2
EXHIBIT 1: SITE LOCATION MAP ........................................................Attached
PRELIMINARY
STORMWATER MANAGEMENT SUMMARY
HARBOR FREIGHT TOOLS
871 US Route 9
Town of Queensbury
Warren County,New York
PROJECT LOCATION
The proposed Harbor Freight Tools is located at 871 US Route 9 in the Town of
Queensbury, Warren County,New York(see Exhibit 1). The site is bordered on the north
by Walmart, on the south by Pizza Hut, on the east by Route 9, and on the west by
residential homes and Walmart.
GENERAL SITE DEVELOPMENT
The applicant is proposing to develop 2.14±acres in order to construct a 16,000±
square foot retail building, associated pavement, utilities, and stonnwater management
area for water quality treatment utilizing Green Infrastructure Techniques. Access to the
site will be provided from Route 9.
SOIL TYPES, GROUNDWATER& TOPOGRAPHY
According to the Warren County NRCS, the primary hydrologic soil group is
Type A loam fine sand. A geotechnical report was prepared by Dente Group which
contains three soil borings performed on October 4, 2017. The borings confirmed
predominantly sandy soils with trace silt and gravel. Groundwater was not encountered
down to a depth of 50 feet. The existing site drains east towards Route 9 and enters the
existing storm system.
STORMWATER MANAGEMENT PLAN
The stornwater management plan for the proposed project will utilize surface
sheet flow across pavement to catch basins and ultimately into subsurface infiltrator
chambers. The building rooftop runoff will be conveyed to the catch basin system and
then to the infiltration area. Stormwater ninoff in the southern portion of the parcel will
ABD Engineers,LLP Harbor Freight Tools
4917A-SW Sunzn1.aiy 1
continue to drain towards Route 9 as in the pre-development condition. A design
infiltration rate of 1"in 12 minutes was used for the storinwater calculations.
The subsurface stoiniwater infiltrators will be utilized to achieve water quality
volume(WQv) and minimum runoff reduction volume(RRv)per NYSDEC Phase 2
Stormwater Regulations including Green Infrastructure Techniques. The total water
quality treatment volume (WQv)required is approximately 5,300± cubic feet and the
minimum Runoff Reduction Volume (RRv) required is approximately 2,900± cubic feet.
The provided RRv will exceed 5,300± cubic feet which meets or exceeds the required
WQv. Pretreatment within the system will be achieved utilizing an isolator row prior to
infiltration.
SUMMARY
The peak discharge for the post-development condition are less than the pre-
development condition. The stonnwater management plan will meet the NYSDEC
Stormwater Design Manual standards, the needs of the project, and the Town of
Queensbury. The stormwater management plan will function adequately and will not
adversely affect adjacent or downstream properties.
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4917A-SIS Sun2n?ary 2
EXHIBIT 1:
SITE LOCATION MAP
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