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Home My WebLink About900 King Street HDR Acoustical Analysis Response 2021-4-231 Tara Gerardi From:Michal Nowak Sent:Monday, April 26, 2021 10:50 AM To:Tara Gerardi Subject:FW: 900 King - Acoustics Analyses For filing From: Musso, Michael <Michael.Musso@hdrinc.com> Sent: Friday, April 23, 2021 5:12 PM To: Peter Feroe <pferoe@akrf.com>; Castillo, G.Noemi <Noemi.Castillo@hdrinc.com> Cc: Libby Cohen <ecohen@akrf.com>; Daniel Abatemarco <dabatemarco@akrf.com>; Jennifer Gray <jgray@kblaw.com>; Sarah Brown <sbrown@hardestyhanover.com>; Michal Nowak <MNowak@ryebrook.org> Subject: RE: 900 King - Acoustics Analyses Peter, Although we are still reviewing the Acoustic Analyses documents that were sent and linked in the below email, we feel that what you provided as Draft on 4/15 can be refined and submitted as part of the Site Plan filings for the May Planning Board meeting (with filing deadline of next week). First, the supplemental Acoustical Analysis does not respond to HDR’s 4/5/2021 Tech Memo, so it should be acknowledged by response here (and in your filing of next week) that responses-to-comments from HDR and other Village consultants are also being filed separately from this new analysis. Regards the Acoustical Analysis filing/submittal, we have a few suggestions noted in the below bullets.  A Cover letter to the Planning Board that introduces the analysis (with focus on the noise walls) should be provided. The cover letter can perhaps be brief (2-3 page) and include the Exec Summary info from the Draft 5- page letter provided on 4/15 (including the purpose of this analysis and why the applicant developed this analysis, in the context of the Findings Statement). I think you can reference Findings Statement sections / page #s that point to the noise walls being further assessed during the Site Plan process (as also said in the 5-page letter). You can then attach the 5-page letter behind the cover letter, removing Draft watermark if appropriate. Understood that you may be refining the overall analysis, currently. Importantly, the cover letter should list in bullet form what is attached as part of the Acoustical Analysis submittal (see below).  I am not sure the Draft C-01 Notes dwg needs to be submitted with the Acoustical Analysis.  Draft C-200: can you show the noise barriers in red and the labels in bold/ red/ larger font for this submittal ?  The pdf files (3) in the Schedule and Logistics folder can be included, with reference in the cover letter.  I think it would be good to submit the 2021-4-8 Excel sheets (Results Tables, that should match the 5-page letter; and the 8 support tabs) as one attachment. Add description in the cover letter.  The 4 pdf heat maps would also be good to submit. They may need some background in the cover letter or some notes/titles on the maps themselves, just to clearly identify what each represents.  In general, you cover a lot of the comments in that 5-page letter, but we recommend a separate cover letter to lay-out what the PB is seeing for the first time.  The cover letter should note all of the supporting exhibits (sequentially), including the backup data. Mike Nowak – would it be ok to submit the CadnaA model and grid back-up files (8 data files) electronically only (as an upload to the Village website) ? 2 HDR will continue review of this analysis next week, and the formal Planning Board submittal will make it easier for us to do so. We will be getting deeper into the modeling as part of our tech review and will let you know if questions or clarification needs. A couple preliminary questions – - Often, we would see contours around each piece of equipment (noise source) rather than just contours along the property boundary. Perhaps you can address this in the submittal, for clarification. - Can AKRF provide a table with the noise level modeled for each equipment and the source of that information ? Please note that we are not endorsing ‘completeness’ of this item at this time, but rather providing direction on how to submit. We suggest that the HVAC analysis (6-page memo; still under review) can also be submitted as a separate item (w/ cover letter to Planning Board). If we can talk on Tuesday of next week, that would be good. We can also continue discussions on possible aesthetics associated with the 3 noise walls. Thanks, Mike Michael P. Musso (he / him / his), M.S., MPH, P.E. (NY) D 201.335.9412 M 845.304.9639 hdrinc.com/follow-us From: Peter Feroe <pferoe@akrf.com> Sent: Thursday, April 15, 2021 1:52 PM To: Musso, Michael <Michael.Musso@hdrinc.com>; Castillo, G.Noemi <Noemi.Castillo@hdrinc.com> Cc: Libby Cohen <ecohen@akrf.com>; Daniel Abatemarco <dabatemarco@akrf.com>; Gray, Jennifer L. <jgray@kblaw.com>; Sarah Brown <sbrown@hardestyhanover.com> Subject: 900 King - Acoustics Analyses CAUTION: [EXTERNAL] This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Mike and Noemi; As discussed, AKRF has completed its acoustical analyses of the efficacy of the construction noise barrier on the (plan) east and west sides of the Site. We've uploaded a DRAFT of the report to this link, together with the models and other backup. Based on the analysis, what we're proposing along with the 12-ft plywood barrier on the southern side, is a 6-ft plywood barrier on the east and west sides. We attached drafts of the updated drawings as well showing these barriers. We'd appreciate your feedback on the draft report and our recommendation. We're happy to hop on the phone to discuss or review markups, whatever is easiest for you. Our goal is to have a finalized report and final recommendation that is generally agreeable to your office by the end of the month, when we need to "formally" submit updates to our previous site plan submission for consideration at the May meeting. 3 We also uploaded a draft of our HVAC analysis if you are able to review it ahead of time; though it is a LOT less involved and indicates no impacts -- so we're not as concerned. Thank you very much. If you have any questions, please don't hesitate to reach out to me, Dan, or Libby. --Peter Peter Feroe, AICP Senior Technical Director | Planning ........................................................................... AKRF, INC. Environmental, Planning, and Engineering Consultants 34 South Broadway , Suite 401 | White Plains , NY 10601 P) 914.922.2370 | F) 914.949.7559 www.akrf.com