HomeMy WebLinkAbout20220339 120 S Broadway Response Letter ENVIRONMENTAL DESIGN
PARTNERSHIP, LLP. 900 Route 146 Clifton Park,NY 12065
(P)518.371.7621 edpllp.com
August 9, 2022
Ms. Kate Halliday
Administrativ� assistant-En�ineerin�
City of Saratoga Springs
474 Broadway
Saratoga Springs, New York 12866
Regarding: 120 South Broadway
Site Plan Review
Dear Ms. Halliday,
The following responses are being provided to a comment letter issued by Laberge Group dated July 19, 2022
Site Plan Review Submittal Checklist:
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?roposed buildings have been noted.
EDP Response: We will coordinate with the Building Architect and provide this in the next submittal
to the City.
Follow up COmment: Understood. Please proved when available.
Response: Buildings 1 and 2 are Type VA construction while Buildings 3 and 4 and the Community
Building are Type VB construction. All buildings will be wood framed. Buildings 1 and 2 will use
prefabricated wood trusses for the floor and roof assemblies while Buildings 3 and 4 will use TJIs in the
floor assemblies and trusses for the roofs. Exterior cladding materials have not been finalized yet but
will likely include brick veneer and fiber cement and/or metal panels and fiber cement lap siding. This will
be shown in a future submittal to the City.
Site Plans:
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�#1 appears to have been erroneously labeled and should be 326 along the east edge of building
#1 could cause difficulties with that proposed plan. These elevation mismatches also translate
to the retaining wall shown at the southeast corner of the building.
EDP Response: The grading plan has been revised and a yard drain has been added for
drainage. The proposed grades also depict water flow away from the building and towards the
parking lot.
Ms. Kate Halliday ENVIRONMENTAL DESIGN PARTNERSHIP, LLP.
August 1, 2022
Follow up comment: The updates made do not address the primary concern. The contour
Response: After discussions with the Building Architect, the plans have been revised accordingly. There
is now a retaining wall along the full length of the eastern side of the building and there will be a swale in
each direction heading to the north and south sides of the building.
14. �, Original comment: There are two fire hydrants shown on site, adjacent to the rear
_�s of buildings#1 and#2 at the end of the central parking areas. These hydrants would be
�ar located within the 10-foot-wide islands at the opposite end of each respective parking
area at the front corner of each building.
EDP Response: The hydrants are located near the rear corners of the buildings #1 and #2 to provide
the ability to flush the line during system installation or in the event flushing is necessary during use.
If the hydrant was located withing the 10-foot island the water main connected to service laterals for
buildings #3 and #4 would not be able to be flushed properly. Futhermore, sanitary sewer and storm
sewer infrastructure are prevalent in this location and the proposed hydrant locations offer better
separation of utilities.
Follow up comment: We understand that you consider that the hydrants are best placed near the ends
of the pipe lines to facilitate flushing, but in this case the pipes can be continued between the buildings
and the SMAs in order to place a hydrant at the islands previously mentioned. However, hydrants
area also meant to serve the purposes of fire protection. The hydrants, at the locations currently
shown,will only be useful for the purpose of flushing. At least one could serve both purposes if moved
to a better location, which might require minor shifting of nearby utilities shown in order to provide
proper separation. The applicant should obtain approval from the local fire department regarding the
Response: A fire hydrant has been added to the requested location within the same island in front of
Building #5. End of line hydrants will be installed on the end of the water lines in order to provide the
proper flushing. A set of the revised plans will be sent to the local fire department for review.
19. .;r 8: Original comment: The silt fencing in front of building #3 is shown on the
ting sidewalk, and the silt fence in front of building #4 is shown running through the
�ing construction.
EDP Response: The silt fence in front of building#4 is intended to be installed prior to building
construction.
Follow up comment: Silt fencing is typically installed prior to land disturbance activities and
remains in place throughout construction until after the upstream area has been stabilized. Is
it expected that the silt fence will be installed, and then removed before the area is disturbed
to construct the huilding?
Response: Looking at the existing grades for the site although relatively flat, it does appear that the site
slopes toward Broadway. This silt fence is intended to catch any silt coming from the property during
900 Route 146 Clifton Park,NY 12065
2
(P)518.371.7621 (F)518.371.9540 edpllp.com
Ms. Kate Halliday ENVIRONMENTAL DESIGN PARTNERSHIP, LLP.
August 1, 2022
demolition and fine grading before the buildings are being constructed. Once the commencement of the
building construction begins, the silt fence will have to be removed.
General Engineering Narrative
1.
:valuation of the capacity of this sewer be conducted? How will this additional flow impact the
city's treatment plant?
EDP Response: The project is not expected to increase the flow in the existing sewer by 10%,
Section 3.3 of the Engineering Narrative states that the projected peak flow to the existing system
(33 gpm) is less than 10% of the design capacity of the 10-inch gravity main (400 gpm) along South
Broadway that serves the property. Furthermore, the proposed daily flows from the project will be on
the order of 11,800 gallons per day based on NYSDEC design flow criteria. The existing project site
has 64 motel units and an existing day spa. Based on NYSDEC design flows for motels, a flow of
110 gallons per day per unit should be used plus an additional 20 gallons per day for a spa. This
equates to an existing total daily flow of 8,320 gallons per day. Theoretically the proposed project
will only be increasing flows to the existing sewer by 3,480 gallons per day. The City of Saratoga
wastewater collection system discharges to the Saratoga County Sewer District Wastewater
Treatment Plant and this system has the capacity to treat the additional 3,480 gallons per day.
Further investigation of the receiving sewers will continue during the detailed design and be
completed as needed to achieve the required approvals from the City of Saratoga and Saratoga
County Sewer District.
Follow up comment: We accept the evaluations provided in this response. Please provide an update
regarding the approvals form the Saratoga County Sewer District when obtained.
Response: Comment noted, a submission to the Saratoga County Sewer District for project approval will
be made.
Stormwater Management Narrative
5.
EDP Response: Volumes of the SMAs were calculated using the HydroCAD stormwater modeling
software.
Follow up comment: This is understood, but the narrative should explain how the volumes were
derived. For a typical pond design, the narrative would include an elevation\-volume curve or
something similar. In this case a description of the product and its typical volume characteristics
would suffice.
........._..
900 Route 146 Clifton Park,NY 12065
3
(P)518.371.7621 (F)518.371.9540 edpllp.com
Ms. Kate Halliday ENVIRONMENTAL DESIGN PARTNERSHIP, LLP.
August 1, 2022
Response: The narrative has been updated to describe the product and its volume characteristics.
6.
,e used for the WQv. This assumption carries through to the other sections on CPv, Qp, and Qf.
Section 3.4 of the Stormwater Management Design Manual states, "Infiltration practices can also be
used as an accepted control for up to the 10-year storm, provided the infiltration rate is greater than
5.0 in/hr. In addition, extended detention storage may be provided above the water quality volume in
an infiltration basin with a proper outlet design." Therefore, the calculations must show how the
infiltration rate of the soils has been factored into the calculations. Furthermore, the entire volume of
the SMAs cannot be considered as available for flow attenuation, it must be "on top oP' the required
WQv. Lastly, the infiltration rate of the soil at the elevation of the bottom of the unit must be confirmed
in order to be approved as an acceptable means for attenuation.
EDP Response:Table 5: Channel Protection Volume Summary has been revised to accurately reflect
the volume within each respective SMA"on top oP' the required WQv. The infiltration rate of the soil
at the elevation of the bottom of the unit was assumed a conservative 8 in/hr for design purposes.
However, infiltration tests will be performed at the start of construction when the pavement areas are
removed and excavated to the base elevation for more accurate information. Based on the nature of
the existing soils and drywells on site, we believe the infiltration rate will exceed 8 in/hr, however in
the event the infiltration rate is slower than 8 in/hr, we will revise the plans accordingly and re-submit
to the City for review.
Follow up comment: Please confirm that these updates are reflected in the SWPPP. Also, please be
sure to submit the resultant infiltration test results at the proposed stormwater system elevations when
completed.
Response: The SWPPP has been updated accordingly and the infiltration test results have been included in
the revised stormwater management narrative.
Stormwater Pollution Prevention Plan
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3ite Plans, Comment 21 above for clarifications to make to the sequence.
EDP Response: The sequence has been revised accordingly.
Follow up comment: Section III.A.3.b still mentions stormwater and sedimentation ponds.
Response: Section III.A.3.b has been updated accordingly.
900 Route 146 Clifton Park,NY 12065
4
(P)518.371.7621 (F)518.371.9540 edpllp.com
Ms. Kate Halliday ENVIRONMENTAL DESIGN PARTNERSHIP, LLP.
August 1, 2022
Additonal General Comment
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�ewer utilities. Therefore, since the on-site water system will be maintained by the owner, the
connection to the City water main must include back flow prevention in accordance with regulatory
requirements.
Response: Comment noted. The applicant will work with the City to ensure that back flow prevention is
installed in accordance with regulatory requirements.
Please feel free to call our office if you have any questions.
Sincerely,
� I
.
D. Brien Ragone, RLA
LEED BD+C
En�fironmei�ial C�esign Partnership
..........
900 Route 146 Clifton Park,NY 12065
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(P)518.371.7621 (F)518.371.9540 edpllp.com