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Home My WebLink About20181046 Airosmith Correspondance THE CAPITAL DISTRICT OFFICE ChazgCivil Engineers 547 River Street Pia ers eyors Troy, NY 12180 COM PAN I ES® Environmental&Safety Professionals P: 518.273.0055 or 888.539.9073 Landscape Architects Proud to be Employee Owned Transportation Planners&Engineers www.chazencompanies.com Mr. Tim Wales, PE City Engineer City of Saratoga Springs 474 Broadway Saratoga Springs, New York 12866 February 4, 2018 Delivered via email:timothy.wales@saratoga-springs.org Re: City Designated Consulting Services Engineering review of Site Plan application—2ndsubmittal 318 West Avenue Mixed Use Building, Saratoga Springs, Saratoga County, New York City Project No. PB#18.055 Chazen Project No. 31804.12 Dear Tim: The Chazen Companies (Chazen) have completed our second review of the following materials received: • Comment Response Letter, prepared by the LA Group, dated January 21, 2019. • Engineering Report Water and Sanitary Sewer for 318 West Ave. Mixed Use Building, prepared by The LA Group, dated November 19, 2018, Rev.January 21, 2019. • Site drawings entitled "318 West Avenue Mixed Use Building,", dated November 19th, 2018, revised January 21, 2019, prepared by The LA Group, unless noted otherwise, consisting of the following 10 sheets: o Cover Sheet o S-1 Survey Map prepared by Thompson Fleming Land Surveyors, P.C., entitled Lot Line Adjustment for Cassier Smith Real Estate Holdings, LLC, situate at 318 West Avenue, dated August 6, 2018, un-signed/un-sealed. o L-1.0—Site Preparation, Demolition & Erosion, Sediment Control Plan o L-2.0—Site Layout& Materials Plan o L-3.0—Site Grading, Drainage & Utilities Plan o L-4.0—Site Landscape Plan o L-5.0—Site Lighting Plan o L-6.0—Site Details o L-6.1—Site Details o L-6.2—Site Details Following are our observations/comments: Water Sewer Engineering Report: 1. The report should include a discussion addressing existing wastewater flow rates and whether rates are anticipated to increase as a result of the proposed project. Please revise the report to discuss this and provide a letter from Saratoga County indicating that they can accommodate the additional flows from the proposed development. HUDSON VALLEY•CAPITAL DISTRICT• NORTH COUNTRY•WESTCHESTER• NASHVILLE,TN Chazen Engineering, Land Surveying& Landscape Architecture Co., D.P.C. (New York) Chazen Engineering Consultants, LLC(Tennessee) West Ave-P8#18.055—2"d submittal review February 4,2018 Page 2 of 3 The LA Group indicated that a Request for Review Form was submitted to the SCSD and that additional flow rates were approved. Please submit to the City documentation from SCSD indicating such,for the record. Survey: 3. Please provide a signed and sealed copy of the boundary, topographic and utility survey, prepared by Thompson Fleming Land Surveyors, P.C. The LA Group indicated that a signed and sealed survey will be submitted with the final plans. 4. Existing water, sewer, electric and gas (if any) services are not shown. Please indicate. The LA Group indicated that the location of existing underground utilities are not known. It's recommended that the approximate/assumed locations be indicated and a note calling for the removal/abandonment, etc., be added to the plans along with appropriate termination requirements. 5. The survey identifies an existing 15' wide sewer easement to the Northern neighbor- is there a sewer main located within this easement? The LA Group indicated there is a force main connecting to the existing sanitary main. It appears as if the approximate location of the force main is shown, but it is not labelled as such. Please confirm and label accordingly. We are concerned with potential impacts to this force main. 8. Please indicate that date that the field work was performed and whether the underground utilities shown (particularly those without surface features)were located or are based on record data. The LA Group indicated that the final survey will be updated to include how the utilities were located. Site Plans: 24. &25. Please indicate the location of the proposed transformer, route of electric services and the meters along with any landscape/screening proposed. The LA Group indicated that the electric and gas meter locations will be shown on the final building plans, however, the location of the proposed transformer and route of electric services was not addressed. The location of the proposed transformer and routes of electric services should be indicated on the Final Site Grading, Drainage, and Utilities Plan, sheet L-3.0, and screened appropriately from neighboring properties. SWPPP 27. According to the NYS Stormwater Management Design Manual (SWMDM), Porous Asphalt Pavement shall have a 4"-8"thick choker course of No. 57 stone and an 8"-12"thick filter layer consisting of No. 2 stone.The Porous Asphalt detail provided on sheet L-6.0 only provides 1" for the choker course, which is not consistent with the SWMDM. Please update the detail accordingly. West Ave-P8#18.055—2"d submittal review February 4,2018 Page 3 of 3 The LA Group indicated that they have had success with the section depicted on their plans on other projects and that other states indicate the choker layer is optional, or only a depth of 1" is required ... and that the proposed design is similar to the Minnesota and FHWA design guidelines. Since this is a deviation from NYS SWMDM requirements, it is recommended that the LA Group submit documentation from NYSDEC indicating this is an acceptable alternate. Otherwise,we cannot recommend approving the design at this time. 29. Please revise the subcatchment symbols on the watershed maps to match the symbols used in the HydroCAD model and label the infiltration trenches, and porous pavement nodes accordingly on the plans. The LA Group indicated that the watershed maps have been revised accordingly, however, a revised SWPPP with the updated maps were not submitted. We recommend that the final SWPPP be submitted to the City for the record. All our comments have been addressed to our satisfaction and we feel that no additional review is required by our office unless NYSDEC does not agree with the proposed deviation. If acceptable to the City,the outstanding items indicated above can be satisfied through a final submission to the City Engineer and Planning Departments. If you have any comments, questions or need additional information, please do not hesitate to contact this office at 518-273-0055. Sincerely, • James J. Connors, P.E., Principal Sr. Director, Engineering Services cc: Jessica Brown, P.E. Chazen File Z:\projects\31800-31899\31804.xx Saratoga Springs\31804.12-318 West Ave Site Plan PB#18.055\submittals\2nd submittal\sent\31804.12-West Ave Mixed Use Building-PB#18.055-2nd submittal eng review letter 2018-02-01.docx