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Chazen Engineering comments_5 4 17 THE CbaZ�n 01-M), North Country Office 375 Bay Road,Queensbury, NY 12804 E,M P. (518)812-10 F ,513 F. (518)812-2205, COMPANIES www.chazencorn painiies,com (,.M0kvyu,v(Avoeci HudsonValley Office (2,45)454-3980 Finginem. Capital Distrisk Office i518)273-0055 Land Surweyors, Plainner5 Environmental Pfohmionails it"dscaveArditects May 04, 2017 Mir.,Craig Brown Zoning administrator and Code Compliance Officer Town of Queens bury 742 Bay Road Queens bury, New York 12804 Delivered via email only: CraigB@queensbury.ne Re., Fostrac Caft,220 Corinth Rood Town of Queensbury, Warren County, New York Chazen Project#91700-12 Queensbury Ref P2 -2017 Dear Mir.Brown: The Chazen, Companies (Chazen) has received the, latest submission responding to technical comments offered by Chazen on March 23, 2017'. Based upon our review, Chazen offers the, folllowing comments for the Town's consideration. St,ormwater Management,&Erosion and Sediment Control: 1. In response to comment.3 of Chazen's March 23, 2017letter', the Applicant stated that contour labels have been corrected. It appears, that spot grades (201.1, 201.2, and 201.3) in the south. central portion of the parking area are incorrect and,shall be revised. 2. In response to comment 15 of Chazen's March 23,, 2017 letter, the Applicant has, provided a draft copy of a stormwater maintenance agreement that the Applicant has, used in other municipalities. It is recommended that the Town's standard maintenance agreement be used.. The Applicant shall work with the Town's attorney to finalize the maintenance agreement. 3. In response to comment 20 of Chazen's M a rch 23, 2017 letter the Appil iicant stated that the time span was, revised to 0-36 hours. However, It appears that the time span was revised to 1-36 hours and some subcatchiments still do not provide distinct infow depths(i.e. 10D-year Sediment Basin 2);the Applicant to revise such that the full effects of the storm is realized. 4. In response to comment 22 of hazen's March 23, 2017 letter the Applicant has, revised the HydroCAD model to include the proposed drainage. It appears that the CB5 to outfall HydroCAD inputs do not match the drainage and grading plan (i.e. IW' vs. 24" pipe and outlet invert discrepancy). The Applicant to revise accordingly and ensure the HydroCAD model matches the grading,and drainage,plan. Chazen E-ngk;eeAqg,Land Surveying 3 Landscape ArchUectum Co, D.P.C. Chazen Emkoweridal Servyces, ba The Chazen CompanAes,Inc, Town oaf Queembury Fastrac,220 Corinth Rd may 03,417 Page 2 51, Sheet C-16, that inicluides the Baysaver Bayfilter detall states there will be 1 cartridge at a, rapacity of 01,05 cfs percartridge. It does not appear that a WQvfllow rate was provided for the hatspot subcatchments to, verify that I cartridge is sufficient, The Applicant to clarify and providle the WQv flolw rate. Traffic Impact Study: 6. Additional information and traffic count data of existing Fastrac faciftles have been provided. We concur with the trip generation analysis, 7. The 2.10210, guild volumes and the capacity analyses provided in the T15 are comparable to those in the Rezone StudV,, the Fastrac analysis and the Rezone Study analysis show Impacts when compared to the No-build condition. To mitigate the impacts the Rezone Study ln,cludes additional widening of the s"ithbound approach for a left-turn lame. This widening and other ancillary improvements such as, signal Imprcyvements, shoulid be constructed with the Fastrair project. E. Our comment to restrict left-turns out from the southern drive. remains unresolved. There will be queuies on a regular basis extencling to and beyond the driveway location. The concern, is a vehicle exiting,thesite and blocking the northbound! lane. A possible solution would be to alllow the left-turns at this time but with,the understanding that the restriction could be Implemented In the future should the conf Has materialize. 9Restricting left-turns at the site drive to Corinth Road is shown to be accomplished by striping; to be effective it is recommended that a curbed island be installed Instead of the striping. M Additional information, and revisions, to the site layout have addressed the on-site and ci rcu lation,com m ent�s. In the event the Planning Board or Town staff Ihaveany questions or require additional information, please do not hesitate to conUct me at(518),824-1926. Sincerely, Sean M. Duty, P.E., LEED AP, CMS4S PrinCipal M anager,M u nlicl pal Engineering Se rvices cc., Sunny Sweet�,Town Planning Office Administratior(via lernafl), Laura,Moore,Town Land Use Planner(via e-mail) Tom Johnson, PE, Chazen Manager of Transportation Services (via emiaill!) File r.,qm�shu "3 700.3,7-T.QMm4kkly-$F72,2017 Fawn Mambots IcarInth