HomeMy WebLinkAbout20190117 Eberlein Subdivision First Eng Review 11-8-19 THE CAPITAL DISTRICT OFFICE
Ghazn Civil Engineers
Land Surveyors 547 River Street
Planners Troy, NY 12180
COM PAN I ESQ Environmental&Safety Professionals
Landscape Architects P: 518.273.0055 or 888.539.9073
Proud to be Employee Owned Transportation Planners&Engineers www.chazencompanies.com
Mr. Michael B. Veitch, Business Manager
City of Saratoga Springs Dept. of Public Works
474 Broadway
Saratoga Springs, NY 12866
November 7, 2019
Delivered via email: michael.veitch@saratoga-springs.org
Re: City Designated Engineer Services for Subdivision Application and SWPPP Review— 1st Submittal
Eberlein Subdivision - 2 Lot Subdivision
42 Ruggles Road, City of Saratoga Springs, Saratoga County, New York
City Project No. PB#2019.117
Chazen Project No. 31904.05
Dear Michael:
The Chazen Companies (Chazen) have completed our review of the following materials received:
• Subdivision application package containing:
o Application for Subdivision Approval, prepared by Ingalls&Associates, dated February 7, 2019.
o Subdivision Approval Submittal Checklist, prepared by the Ingalls &Associates, dated April 19,
2019.
o Application for Conservation Subdivision Plat Completeness Checklist, prepared by applicant,
undated.
o New Water Service Connection Agreement & Application Form, undated, signed by
representative of the applicant.
o SEQRA Short Environmental Assessment Form, prepared by David Ingalls, dated February 7,
2019.
• Letter addressed to Chazen prepared by David Ingalls, dated October 18, 2019.
• City of Saratoga Springs Public Hearing Notification Letter sent to Ingalls & Associates from Jen
Merriman, Land Use Board Coordinator, dated May 8, 2019.
• Correspondence from Raga Family Trust at 50 Ruggles Road, Saratoga Springs, NY dated May 16, 2019
and May 18, 2019.
• Draft Subdivision Conservation Easement, unsigned, undated.
• Stormwater Pollution Prevention Plan, prepared by Ingalls &Associates, dated October 18, 2019.
• Site drawings entitled "Ruggles Road Conservation Subdivision", dated January 18, 2019, and revised
October 18, 2019, prepared by Ingalls&Associates, unless noted otherwise, consisting of the following
5 sheets:
o 1-Cover Sheet
o 2-Conservation Analysis
o 3-Subdivision Plat
o 4-Grading and Erosion & Sediment Control Plan
o 5- Details
Hudson Valley• Capital District• North Country•Westchester
Nashville• Chattanooga Portland
Chazen Engineering, Land Surveying& Landscape Architecture Co. DPC(NY) • Chazen Engineering Consultants, LLC(TN/OR)
Eberlein Subdivision-PB#2019.117-1st Submittal Review
November 7,2019
Page 2 of 4
Please note that An Engineers report for water and sanitary sewer, the Complete Streets Checklist or Project
Cost Estimate were not received for this project.
Following are our observations/comments:
General:
1. The City's project number of 19.117 should be added to all site plan application and construction
documents.
Short Environmental Assessment Form (EAF):
2. Please respond to item 13b.
3. Item 17a is marked "No".This should be changed to "Yes" as the project will create storm water
discharge in the form of non-point source runoff from new impervious areas.
Site Pans
4. The original signed and sealed survey referenced to NGVD 1929 datum must be submitted.
5. Please indicate the location, size and material of the existing water main to which the project will
connect in Ruggles Road.
6. Please identify the inverts of the existing 15" culvert under Ruggles Road.
7. A drainage easement is shown on the Conservation Analysis upstream of the project site, ending at
the east boundary. Please confirm that the easement does not extend through the project site and
restrict the proposed development.
8. The Conservation Analysis needs to identify the required 30' buffer areas as defined in Chapter 241 of
the City of Saratoga Springs Code.
9. In accordance with City Code Chapter 241, Article IV, Section 1, Paragraph C.3, the Subdivision Plat
shall identify the location, use, ownership, management, methods of preservation, and rights of the
owners and the public to the open space land subject to the deed restriction. Please add appropriate
notations.
10. The Subdivision Plat should be updated to note the area of each proposed lot, as well as the area of
deed-restricted open space on each lot. Also,the plat must be prepared and signed/sealed by a
licensed land surveyor. We assume that since Van Dusen & Steves prepared the boundary survey that
they prepared the subdivision plat—please confirm.
11. In accordance with City Code Chapter 241, Appendix H, Section 2, Paragraph R, the owner of a
proposed subdivision shall offer to the City"Class A Type Usable Land" equal in size to at least ten
percent (10%) of the owner's subdivided tract.There are alternatives presented in the Code. Please
identify how this requirement will be met.
Eberlein Subdivision-PB#2019.117-1st Submittal Review
November 7,2019
Page 3 of 4
12. Silt fence is shown on the Grading and Erosion & Sediment Control Plan as perpendicular to contours.
Please revise.
13. Insufficient information and detail is provided for the proposed septic tank and onsite disposal system
to verify compliance with NYSDOH requirements presented in "Residential Onsite Wastewater
Treatment Systems Design Handbook". Specifically, please provide the following:
a. Proposed invert elevations of all system components along with top of concrete and the
finished grades over each component.
b. Proposed concrete strength and reinforcing requirements for the septic tank and distribution
box.
c. Identification post details for buried septic tank and distribution box covers, if applicable.
d. Additional septic tank dimensions, including: offset between baffles and top of tank, depth of
baffles below inlet and outlet,wall thickness,tank width, minimum and maximum liquid level,
inlet and outlet inverts, and offsets between baffles and inlet/outlet.
e. Additional distribution box dimensions, including: inlet and outlet inverts, offset between
outlet and bottom of distribution box, width, length, and height.
f. Certification and tightness testing requirements.
14. The septic and onsite disposal system notes reference the Town of Charlton inspection requirements.
Please revise.
SWPPP
15. The SWPPP identifies two drainage areas and two analysis points in the Existing Drainage map.
However, it appears that the northern portion of the site drains to the north and discharges onto the
property of Gary and Leeanne Raga under current conditions rather than to the 15" culvert under
Ruggles Road as analyzed. As modeled, this overstates the peak rates realized under existing
conditions at Ruggles Road. Since the post development analysis shows they are just maintaining the
rates at Ruggles Road, the system as designed may not actually meet detention requirements. The
Existing and Proposed drainage maps and runoff analyses should be updated to reflect this additional
drainage area and analysis point.
16. The post-development runoff analysis accounts for storage and exfiltration (10 inches/hour) in a
proposed onsite depression area. Deep tests and falling head permeability testing must be completed
within footprint of this practice to verify the exfiltration rate used in the stormwater model and that
the infiltration system meets industry separation requirements to seasonal high ground water.
In order to expedite and simplify the review of revised materials we would appreciate if the next submission
be accompanied by a response letter that describes the revised materials and how our comments were/were
not integrated.
Eberlein Subdivision-PB#2019.117-1st Submittal Review
November 7,2019
Page 4 of 4
If you have any comments, questions or need additional information, please do not hesitate to contact this
office at 518-273-0055.
Sincerely,
frtytee.-__ 4asw",
Jennifer Nechamen, P.E.
Project Engineer
cc: James J. Connors, P.E. Chazen
File
Z:\projects\31900-31999\31904-XX_Saratoga Springs\31904.05-Eberlein Subdivision PB#2019.117\submittals\Submittal-1\sent\31904.05-Eberlein Subdivision_PB19-117_1st-sub_20191107.docx