Rosenberg additional stormwater ENVIRONMENTAL DESIGN
PARTNERSHIP, LLP. 900 Route 146 Clifton Park,NY 12065
(P)518.371.7621 (F)518.371.9540 edpllp.com
�-� Shaping the physical environment
January 21, 2020
Town of Queensbury
742 Bay Road
Queensbury, NY 12804
Attn: Stephen Traver, Planning Board Chairman
Re: Site Plan Review Application Supplemental Submission
Rosenberg — 73 Knox Road
Dear Mr. Traver:
As a result of our discussions with the Board at the meeting on December 22 we
were asked to present our information regarding our ideas for additional
stormwater management at the Rosenberg property. Submitted for your review are
the following:
a Plan Sheet 8 Stormwater Plan
® Plan Sheet 9 Stormwater Details
These plans provide new information on the type of stormwater devices, location of
those devices and details of those devices. Included are permeable block pavers.
open-celled concrete pavers, strip drains to dry wells and a catch basin to dry well.
It should be noted that these supplemental stormwater devices go beyond the
current regulatory requirements for stormwater management. Stormwater
management as required by the local ordinance was detailed on the originally
submitted plans. It has always been the Owner's intent to provide stormwater
management to further address the existing conditions of the site but it was not
necessary to detail the practices on the site plans. At the Board's request we have
now provided this additional information as part of the application. Should this
new information be subject to further review by the TDE (Chazen), the fact that
these management practices are beyond the requirements should be noted.
ENVIRONMENTAL DESIGN PARTNERSHIP, LLP. 900 New York 146 Clifton Park,NY 12065
Shaping the 1)11YSic21 environment (P)518.371.7621 (F)518.371.9540 edpllp.com
Related to the supplemental stormwater practices there has been a reduction in
impervious area. We have eliminated areas of asphalt pavement and transitioned
other areas to permeable pavers. Overall permeability on the site has increased by
approximately 1000 sf. The actual site area permeability (not counting Knox Road)
is now 65%+1-.
Thank you for your consideration of this new information and we look forward to
meeting with your Board again in February.
Sincerely,
1 �ta►r�1� ,�� `�
Dennis NlacElroy, PE
attachments
cc: Bonnie & Stuart Rosenberg
2
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CONSTRUCTION SHOULD BE COMPLETED AND STABILIZED PRIOR TO
ACTIVITY SCHEDULE CONNECTION TO POROUS PAVERS. 1 \`\
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GALVANIZED STEEL STORMS w.5" EXISTING SUBGRADE SHALL NOT BE COMPACTED OR SUBJECTED TO /
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1. ALL STONE SUBBASE AND BEDDING LOCATED A 1. ALL STONE SHALL BE CRUSHED-TYPE AND MEET \ PERMEABLE BLOCK_PAVER SECTION
AREAS TO BE PAVED SHALL BE WRAPPED IN A NYS DOT STD. SPECIFICATIONS 703-02, COARSE PERMEABLE
NON-WOVEN GEOTEXTILE FABRIC ENVELOPE
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SOIL EROSION INTO BASIN. FINISHED GRADE g- FLAT SLABTOP W/ 2'-0" w Q W
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PRE-CAST CONCRETE GRADE ADJUSTMENT EXTENSIONS AS BACKFILL WITH CLEAN Q - Z d
MANUFACTURED BY FORT MILLER CO., INC., TYPICAL. HEIGHT AS WELL-GRADED SAND, 6" PEA O O 0 I
REQUIRED, 4" MIN. 1 D" MAX. SEAL ALL JOINTS WITH �" MIN. THICKNESS ASTM CLASS 2 \�\/\ /,\ .\,�\,\\, \�\�\�\ /.� GRAVEL, TYP. ^^ W 0 U N
4-1/2" ° CEMENTITIOUS STRUCTURAL GROUT (8,000 PSI MIN.) SUCH AS QUIKRETE LL W � �7 X LL z
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6' PVC PIPE GROUNDWATER. 6' MIN. EXTENSION, TYP. I- 4'-0" DIA. SUBMITTAL TO PB 1/15/20 DM TO
a 8' DIA. PERFORATED
`r' USE FLEXIBLE BOOT TYPE CONNECTORS WITH CORRUGATED PIPE DRYWELL SECTIONS. 4" WALL
6" rn ADAPTERS (CGA) FOR PE PIPE SUCH AS KOR-N-SEAL BY o THICKNESS. SUPPLIED BY M
Ir TRELLEBORG PIPE SEALS OR APPROVED EQUAL, TYP. WHERE I a FORT MILLER OR APPROVED t`
BOOT CONNECTORS CANNOT BE USED: INSTALL CGA ON PIPE, 24" RING OF o EQUAL
CENTERED IN STRUCTURE WALL; CLAMP WS WATERSTOP CRUSHED STONE SURROUND WITH
GROUTING RING (BY PRESS-SEAL GASKET CORP. OR APPROVED N0. 2 SIZE, NON-WOVEN CONSTRUCTION
EQUAL) ON CGA AND EMBED IN J" MIN. THICKNESS NON-SHRINK TYP. ALL SIDES FABRIC GEOTEX 451 OR
z CEMENTITIOUS STRUCTURAL GROUT (7200 PSI MIN.) SUCH AS, EQUAL SCALE: x
QUIKRETE NON-SHRINK PRECISION GROUT, SIKAGROUT 212, 8' THICK PRECAST AS NOTED o
N APPROVED EQUAL, OR HYDRAULIC CEMENT. FILL ENTIRE WALL 8' LAYER 4OFCONCRETE FOOTING BY FORT Y
UNDISTURBED EARTH OPENING TO FULL WALL THICKNESS. CRUSHED MILLER OR APPROVED EQUAL }
OR ROCK. �L2 CRUSHED STONE SUBBASE, 12" MIN. DEPTH, CONTINUE III UNDISTURBED SHEET TITLE: �
STONE X SPRINGLINEAND OF PIPES. FOR UNSTABLE SUBGRADE, SUBGRADE STORMWATER 0
OVER-EXCAVATE AND INSTALL ADDITIONAL STONE AS
NECESSARY TO STABILIZE. I I II I W DETAILS
n SHALLOW CATCH BASIN I-1 11-
Z
NOT TO SCALE 12 NO 2 BASEHED STONE SHEET NO. Ld
PRECAST CONCRETE DRYWELL 9 3
NOT TO SCALE
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