3301 SEAWAY BLVD WHOLE SITE 2025-10-30

manuals as related to this project if requested, but I was unaware that was the intention of the review. I apologize for the misunderstanding. As you already have clear setback requirements, I would be hesitant to relax these. Let me know if you have questions or comments. Thanks, Bryan Bryan K. Hawkins, P.E. Senior Geotechnical Engineer HVAGIOSCIENCES INC 21312 30th Drive SE,Suite 110 Bothell,WA 98021 Office:425.774.0106 ext. 245 Cell: 206.794.3135 www.hwageo.com From:Sabrina Fandler [mailto:SFandler@everettwa.gov] Sent: Friday, November 18, 2016 10:55 AM To: Bryan Hawkins<bhawkins@hwageo.com> Subject: RE: 3301 Seaway Blvd-Peer Review Hi Bryan, The engineer and several City staff have been going back and forth with some requirements.The City was particularly concerned with the detention pond at the-top of the steep slope.Our Stormwater Management Manual states that in no circumstance should a detention pond be located at the top of a steep slope any closer than an absolute minimum of - a horizontal setback equal to the vertical distance of the steep slope. For this project,the steep slope is approximately 90-100ft tall,which would require the detention pond to be set back that same distance from the top of the steep slope. The engineer has used the NGPA boundary,which is at the top of the steep slope, as their limit for construction.Thus, the detention pond is set exactly at the top of the steep slope.Although this section was highlighted each time we gave comment letters back, it was not explicitly called out until our last round of review when we decided that the engineer clearly wasn't addressing everything we were intending for them to address in their pickups.The engineer is now trying to push back against our setback requirement stating that he has never seen such a requirement for a setback from any other jurisdiction. Paul McKee (permit services manager) has asked him to pull together examples from other jurisdictions for our collective review.We are internally discussing our requirements of this setback to see if we can come up with a collective City response for the engineer.We were hoping that items like this (requirements from our Stormwater Management Manual and the Planned Action Determination for the project would have been addressed during your third party review.Although we received great comments and feedback from you,there was not a definitive engineering response regarding these specific criteria and it has led the engineer to believe that you/HWA finds the pond location at the top of the steep slope adequate and of little concern.Attached please find a copy of the development team's geotechnical engineering responses to your comments. Please let me know if you have any questions or additional concerns. I will keep you updated with any progress we make from our internal discussions and will forward revised plans for re-review as soon as we get them in. Thanks again for helping us out, Sabrina Fandler, EIT, LEED®AP BD+C City of Everett Public Works Department I Development Technician 3200 Cedar St, Everett,WA 98201 Office: 425-257-8810 Direct: 425-257-7813 Email: SFandler@everettwa.gov