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Home My WebLink Aboutresponse from Horsley Whitten on Storm Water report Elizabeth Keary Soule_RE_ AKP Stormwater DocsFrom: Elizabeth Keary Soule <ekearysoule@thetrustees.org> Sent: Wednesday, January 11, 2023 11:38 AM To: Clini, Nicolas; Beaudoin, Griffin; Karle, Darcy Cc: Tieu, Michael; Wrobel, Mahew; Elizabeth Keary Soule Subject: RE: AKP Stormwater Docs Good morning Nick, Response from Horsley Wien Group: 1. Applicant should update the details for the Bio-retenon area to add a 3 inch layer of mulch in both Bio- retenon areas per Mass Stormwater Handbook Vol2 Ch2. We no longer recommend using mulch in the bioretenon areas due to issues caused with floang and clogging and typically use a denser planng approach. This is standard pracce for most bioretenon designs these days. 2. From the same secon of the handbook all underdrains should be set in a minimum of 8” of gravel. We are looking into the gravel and will get back to you on this one. Our plans show 6” 3. Applicant should confirm there is a minimum of 2 of separaon to the ESHGW in all stormwater infiltraon BMPs. We meet the 2’ of separaon and I we will confirm and add this informaon the bioretenon details. Elizabeth Keary Soule, RLA Structures & Landscapes Project Manager The Trustees 200 High St., 4th floor | Boston, MA 02110 ekearysoule@thetrustees.org | 978-338-1154 Keep up with Trustees Iniaves! Get a closer look at the things we care about thetrustees.org /blog From: Clini, Nicolas <Nicolas.Clini@town.barnstable.ma.us> Sent: Tuesday, January 10, 2023 10:15 AM To: Beaudoin, Griffin <Philip.Beaudoin@town.barnstable.ma.us>; Karle, Darcy <Darcy.Karle@town.barnstable.ma.us>; Elizabeth Keary Soule <ekearysoule@thetrustees.org> Cc: Tieu, Michael <Michael.Tieu@town.barnstable.ma.us>; Wrobel, Mahew <Mahew.Wrobel@town.barnstable.ma.us> Subject: AKP Stormwater Docs Good morning all, The DPW has completed a review of the Stormwater Analysis for the Armstrong Kelley Park project and have generated the following comments. 1. Applicant should update the details for the Bio-retention area to add a 3 inch layer of mulch in both Bio-retention areas per Mass Stormwater Handbook Vol2 Ch2. From the same section of the handbook all underdrains should be set in a minimum of 8” of gravel. 2. Applicant should confirm there is a minimum of 2ft of separation to the ESHGW in all stormwater infiltration BMPs. Please let us know if you have any follow up questions. Thank you, Nick Clini Engineering Designer Barnstable Department of Public Works 382 Falmouth Road - Hyannis, MA 02601 Cell: (508) 776 6725 Nicolas.Clini@town.barnstable.ma.us hp://www.townoarnstable.us/ CAUTION:This email originated from outside of the Town of Barnstable! Do not click links, open aachments or reply, unless you recognize the sender's email address and know the content is safe!