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HomeMy WebLinkAbout20210588 Van Dorn & Seward Final Subdivision Supplemental Information (2) 2452 STATE ROUTE 9 44., LANSING ENGINEERING, PCMALTA,NY12020 ITE30 T(51 8)899-5243 F(5 1 8)899-5245 May 7, 2021 Michael Veitch, Business Manager City of Saratoga Springs 474 Broadway Saratoga Springs, New York 12866 RE: Van Dorn and Seward Subdivision Engineering Review PB#20200843 File: 539.059.001 Dear Mr.Veitch; Lansing Engineering has reviewed the January 18, 2021 comment letter prepared by Bradley Grant regarding the above noted project.The following summarizes the comments followed by our response. General 1. Comment:The project survey map does not seem to be a Plat drawing and quite difficult to read. Notes indicate a gore or area where lot lines do not close.This should be rectified through research and/or revisions.See plan comments. Response:The plan has been divided into an Existing Conditions Survey&a Subdivision Plan for clarity. The property lines shown reflect the subject deeds and the gore area note has been removed from the plans. 2. Comment: Coordinate with each respective utility provider regarding abandonments for schedule and the work itself. See plan comments. Response: A note has been added to Sheet ED-1 stating the contractor shall coordinate with each respective utility company and the City of Saratoga Springs for scheduling of the abandonment and removal of all utilities to the existing structures to be removed. 3. Comment: Are there any salvageable trees on the developed lots that could be retained? Is a landscaping plan beyond street trees forthcoming? Response:The project site includes small areas of trees which require clearing and grubbing for the construction of the single-family residences. Mature trees exist along Seward Street, however at the request of the City of Saratoga Springs to extend the sidewalk along the frontage of the parcel, the mature trees require removal.Street trees are required by the City of Saratoga Springs Zoning Code and have been included on the plans.Additional evergreen trees have been included between the existing building lot and the proposed single-family residences.Any additional landscaping shall be considered and installed at the discretion of the future homeowners. Van Dorn and Seward 2 of 4 Subdivision May 7, 2021 Water and Sanitary Sewer 1. Comment: Please provide details and specify all materials/part numbers for connections to sanitary sewer main and water main in conformance with City of Saratoga Springs standards. Response:Sheet LMG-1 includes callouts specifying the required materials for each individual sanitary sewer and water service.Additionally, the City of Saratoga Springs Standard Details for Sanitary Sewer Service Connections and Copper Water Service Piping are included on Sheet DT-2 of the plan set. The City Standard Details include the required materials and part numbers required by the City of Saratoga Springs Department of Public Works and Engineering Department. Plans S2-Survey Map 1. Comment: Notes indicate a gore or area where lot lines do not close.This should be rectified through research and/or revisions. Response:The property lines shown reflect the subject deeds. The gore area note has been removed from the plans. 2. Comment: Include and show property lines on the legend and plans. Legibility of mapping is not good. Bolder lines for property lines are needed and overall light line-work and text make this map difficult to read. Response:The plan has been divided into an Existing Conditions Survey&a Subdivision Plan for clarity and legibility. The legend has been modified to include property lines and the Subdivision Plan has been developed to include bold property lines to provide a clear and legible plan. 3. Comment: How will existing sewer lateral easement document be eliminated and new easement filed? New easement should be shown and intent labeled (label stating for sewer lateral for adjacent lot with tax map#).This easement needs to be stated in deed. Response:The proposed sewer easement has been included and annotated on the Subdivision Plan. The proposed easement shall be included in the deed filed with the Saratoga County Clerk's Office and the deed shall be written such that the intent of the new easement is to extinguish and supersede the existing sanitary sewer easement. ED-1—Existing conditions and Demo Plan 1. Comment: Refer to pavement restoration detail and detail sheet for pavement saw-cutting, sub-base,tack coat and 3-inches of base course with 1-1/2" of top course pavement. Note to promptly repair any damages to city streets. Notate protections such as rubber wheeled excavators and plywood/steel sheets to avoid damaging existing asphalt surfaces. Response: A note has been added to Sheet ED-1 stating the above requested information. Van Dorn and Seward 3 of 4 Subdivision May 7, 2021 2. Comment:Add notes to coordinate with utility companies and city for utility abandonments even if in general notes elsewhere. Response:Sheet ED-1 has been revised to specify the above note. LMG-1 —Layout, Materials& Grading Plan 1. Comment: Driveway radius for lot 4 seems excessive. Northerly radius is at property line.Verify City standard and make all consistent as lot 3 and lot 2 driveways are shown with no radii. Response:Based on the requirements set forth by the International Fire Code(IFC), a fire apparatus turn-around does not exist on the dead-end street.As such, the plans have been developed to include the required turnaround meeting Appendix D of the IFC.Appendix D includes minimum sizing requirements and includes a minimum 28' radii for the "Acceptable Alternative to 120'Hammerhead"fire apparatus turnaround. Due to the requirements set forth by the IFC, the driveway shall remain in the proposed condition with the 28'radii. 2. Comment: Label size of existing utilities. If water main is particularly old or small tapping saddles may be required for water services. Confirm sizes and need for saddle with water department. Response:The existing utilities shown on the plans include sizes and materials. The existing watermain is a 4"watermain. The call-out on Sheet LMG-1 has been revised to state the contractor is to verify the location,size and material of the existing watermain prior to construction to verify the correct materials are utilized for the water service installation. 3. Comment: Please move proposed street tree for lot 4 a few feet south to be at least 10'from new sanitary sewer lateral for Harney property. Response:The trees along Van Dorn Street have been relocated inside the grass belt in the City Right-of-Way per the City Standard Details. The southernmost tree has been relocated to provide adequate separation distance from the new sanitary sewer lateral. 4. Comment:Where will drainage from the lots runoff on Van Dorn as we did not see any existing drainage infrastructure on Van Dorn to collect and convey.Are the check dams permanent to allow(short term) infiltration within the swale's? Please provide description of existing road and lot drainage and direction(s) of flow. Ensure positive drainage by sheet flow and avoid ponding in the Van Dorn Right-of Way.The narrative discussed depressions for infiltration. Please clarify location and intent of infiltration area. Infiltration chambers for challenged areas may be a consideration if needed. Swales discharging surface water(albeit pervious)to pavement could create icing conditions.Swale infiltration through grass and soil is reduced when frozen and subsurface chambers may provide an isolated area in the swale that infiltrates below the frost level. Provide proposed spot/weir elevations for permanent features to ensure design intent and avoid drainage/icing issues. Although a full SWPPP is not required there is potential for the concerns above that can be mitigated with modest grading and design. Van Dorn and Seward 4 of 4 Subdivision May 7, 2021 Response:Stormwater runoff from the existing undeveloped site generally flows in the easterly direction towards Van Dorn Street. The runoff then flows down Van Dorn Street where the existing surface slope is approximately 2.0%. The proposed development includes the addition of drainage swales along the property lines providing drainage flow similar to the existing site conditions. The drainage swales will allow for the collection and infiltration of water into the existing ground. Water that cannot be infiltrated into the ground will drain to Van Dorn street similar to the pre-development conditions and be conveyed down Van Dorn street. Ultimately, the storm water generated in the proposed conditions will be unchanged and follow the same drainage path and sequence as the existing undeveloped conditions. ESC-1-Erosion&Sediment Control Plan 1. Comment: Show silt fence across proposed properties frontage of Van Dorn Street to include proposed driveways until driveway construction occurs.Add reference on this sheet for street sweeping if necessary. Response:Sheet ESC-1 has been revised to include sediment control fence along the entire frontage of each parcel. The callout has been revised to state the sediment control fence shall be installed along the entire frontage until the installation of the stabilized construction entrance/driveway occurs on the parcels.Additionally, a note has been added stating the contractor shall sweep existing pavement areas as necessary to remove tracked sediment. DT-1-Erosion&Sediment Control Details 1. Comment: Are the check dams temporary? Note need for removal of sediment accumulations and all temporary practices prior to when site/lots area stabilized per SWPPP. Response:The check dams included on the site plans are temporary erosion control measures. The Stone Check Dam Detail has been revised to include a note stating all sediment build-up and check dams shall be removed once site stabilization has occurred. Attached will be a copy of the revised plan set for your review. If additional information is required, please contact our office at your earliest convenience.Thank you. Sincerely, LANSING ENGINEERING, PC Yate. :cott Lansing, PE, CPESC, CPSWQ CC: Steve Sbardella (Applicant)