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PPW071321PARKS & PUBLIC WORKS COMMITTEE MEETING July 13, 2021 Elected Officials Participating Virtually Councilmember Laura Johnson Councilmember Luke Distelhorst 1. CALL TO ORDER Staff Participating Virtually Phil Williams, Public Works Director Rob English, City Engineer Zack Richardson, Stormwater Engineer Shannon Burley, Parks, Rec. & Cultural Sery Scott Passey, City Clerk Dep. Dir. The Edmonds City Council virtual online PPW Committee meeting was called to order at 4:00 p.m. by Councilmember Distelhorst. 2. COMMITTEE BUSINESS 1. Taste Edmonds & Oktoberfest Event Contracts Ms. Burley explained both events will be held at the Frances Anderson Center field this year. Most large festivals at the Frances Anderson Center close 8` between Main and Dayton and allow local access only. The contracts include standard requirements related to composting, litter, garbage compostable food service wares, etc. New to contracts this year is a requirement to adhere to all COVID-related guidelines at the time of the event. Both events serve alcohol so the contracts include appropriate restrictions and requirements. Oktoberfest This will be an all ages cultural type event with designated areas 21+, areas for all ages with kids -centric activities, folk style music at a lower volume intended for allow for conversation and beer/wine tasting. This a fundraiser for the Rotary; the Rotary contributes to large projects in the City such as the inclusive playground. Taste Edmonds This is the Chamber's largest fundraiser and raises funds for other free events such as Halloween, 4th of July fireworks, and tree lighting. As the beer garden and live music aspects of Taste generate the most revenue, the Chamber decided this year to make it a 21+ ticketed event in the hopes that the live music and the opportunity to be outside in a park and enjoy food and beverages will raise enough money to fund the free events. The Chamber wants to remain nimble and if this format doesn't work, it will be adjusted in the future. The Chamber is required to adhere to all the Liquor Control laws and the City increases the liability limits for events with alcohol. She highlighted a late change to Section 2.12 in the contract, adding more language regarding the alcohol portion of this event given that it is entirely 21+. That change will be reflected in the ordinance when it is in the Council packet for approval. Ms. Burley responded to questions regarding the Chamber's outreach to neighbors due to location, plans to enforce the noise ordinance, informing Community Transit of the 8th Ave closure which requires rerouting transit, and the Chamber's efforts to avoid service of alcohol to minors. Action: Consent Agenda 2. Report on Bids for Phase 2 Stormwater Replacement Project 07/13/21 PPW Committee Minutes, Page 2 Mr. English explained this project was identified in a 2015 Stormwater Study and solves a number of capacity issues. This particular project is related to Maple Street between 6t" and 7t" and the installation of over 1,000 feet of pipe. Construction bids were opened on July 8t"; 6 contractors responded. Quilceda Excavations was originally the low bidder but a bid error in their documents and WSDOT specifications that requires bid documents be read in certain ways changed their bid and they fell to the bottom at $1.4M. Mr. English reviewed the bids: Bid date: 7/8/21 Engineer's Estimate $851,200 Contractor Total Dungeness Construction 797,898 Rodate Construction 815,926 Road Construction NW 844,664.50 Kamins Construction 887,508.76 New X Inc 1,243,655.33 Quilceda Excavation 1,403,283.21 Proposed construction budget Description Total amount Contract Award $797,898 Construction Management, inspection and testin 15% $119,685 Management reserve (15%) $119,685 Total $1,037,267 Construction Funding Available Funding Total amount 422 Funds for Phase 2 Storm Replacement $1,037,267 Staff is in the process of checking references. A response was provided to the bid protest submitted by Quilceda explaining WSDOT bid specifications. Once the references are complete, the contract will be on the July 20t" or 27t" agenda for award. Dungeness Construction, the apparent low bidder, is a Disadvantaged Business Enterprise (DBE) and a Minority Owned Business. Mr. English responded to a question regarding tracking for DBE. Action: Consent Agenda, pending finalization of reference checks 3. Presentation of a 128-SF Dedication at Northwest Corner of 4th Ave N & Daley St Mr. English explained this is an easement dedication of 128 square feet at the northwest corner of 4tn & Daley as part of the development of a private single family residence. An exhibit in the packet identifies the location. Action: Consent Agenda. 4. Presentation of Stormwater Management Code (ECDC 18.30) Update Mr. Richardson reviewed: Why are we updating the code now? o NPDES Permit with State requires codes to protect surfaces water from development which meets or exceeds standards prescribed by Ecology. o New permit requires that the City update to newest Ecology standard by July 2022. o Staff aiming for effective date of January 1, 2022, for clarity in applicability timelines. o Ecology's newest manual (2019 SWMMWW) has minimal substantive changes since previous version (2014); most revisions are organizational changes. 07/13/21 PPW Committee Minutes, Page 3 o See Ecology documents Executive Summary of the 2019 Revisions and Crosswalk: 2014- 2019 SWMMWW for additional information of Ecology o driven changes. How is ECDC related to Ecology Manual o Ecology issues their manual (2019 SWMMWW) o City makes minor local modifications via the Edmonds Stormwater Addendum (Addendum) o City updates ECDC 18.30 to adopt the new manual as modified in the Addendum o Some provisions are required by Ecology o Some items are optional add-ons for City of Edmonds o City provisions cannot be less stringent than Ecology standard and cannot be less stringent than previous version (without Ecology approval) Drainage Review 101 o Drainage mitigation is required when projects exceed certain thresholds of new plus replaced hard surfaces and/or clearing limits. o Hard surfaces are traditional impervious surfaces, plus other compacted surfaces including gravel roadways and pervious pavements. o Replaced hard surfaces are any surfaces where the subgrade material below the surface is exposed temporarily during the construction operation. o Category 1 — Minimum Requirements (MR) 1 — 5 apply ■ 2,000 SF new plus replace hard surfaces, OR ■ 7,000 SF of land disturbing activity (clearing) o Category 2 — Minimum Requirements 1 — 9 apply ■ 5,000 SF new plus replace hard surfaces, OR ■ Converts 0.75 acres of vegetation to lawn/landscaped area, OR ■ Converts 2.5 acres of native vegetation to pasture o Minimum Requirement #5 (LID) ■ Applies to all projects that require drainage review (over 2,000 SF hard surfaces). ■ Focuses on erosion flows; 2-year storm and below. ■ Requires the use of infiltration if feasible ■ Predominant way we get storm water mitigation in Edmonds o Minimum Requirement #6 (Water quality) ■ Requires 5,000 SF of pollution generating hard surfaces (ie. drivable pavement; does not include roofs in most cases) ■ Requires treatment of runoff specific to removing contaminants. o Minimum Requirement #7 (Flow control) ■ Requires 10,000 SF of hard surfaces (or more than 0.1 cfs increase in discharge from site) ■ Big vaults/detention; this is the traditional way of storm water management where we try to match historic flow rates. ■ Infiltration is required to be used for flow control if applicable How's it working? o Switched permit tracking systems at beginning of 2020; reviewed single family building permit data since that date through the start of June 2021. ■ This didn't capture plats as a whole project but reflects the mitigation required for each individual home within a plat. ■ Focused on main BMP where multiple BMPs were proposed. 0 52 projects required drainage review 0 2 applied dispersion as main BMP 0 22 applied an infiltration -based BMP 0 5 applied a perforated pipe connection 0 22 applied Edmonds -specific detention BMP 0 1 qualified for direct discharge What's changing? 07/13/21 PPW Committee Minutes, Page 4 o Most changes are updates to match Ecology reorganization and/or to provide clarity where staff have experienced commonly missed or misinterpreted information by manual users & designers. o See 2022 ECDC 18.30 and Stormwater Addendum Summary of Changes in agenda packet ■ Direction from Ecology (Orange) = Ecology prescribed/required ■ Direction from Staff (White) = Staff -proposed clarification, reorganization, or update without substantial change/impact ■ Direction from Staff (Green) = Staff -proposed change with potential impacts o Staff seek direction on staff -proposed changes with potential impacts prior to moving code for State approval and permitting. ■ Department of Commerce and SEPA approval required prior to formal Council adoption. Change #1: New connections of existing hard surfaces o Old: Current code allows for connection of existing hard surfaces on case -by -case basis with a focus on maintaining City pipe capacity. o New: Staff propose revisions to require new connections of existing hard surfaces to be treated like new hard surfaces requiring full drainage mitigation. ■ Note that this is specific to new connections; where residents have an existing connection, they are permitted to replace the connection in -kind without any mitigation requirements. o Staff Opinion: These new connections of existing surfaces are still new or altered impacts to the City system and any surfaces water they drain to; they should be mitigated for as new impacts. o Potential Impacts: This may limit homeowner options when working on homes without development or expansion. However, the impacts of allowing every pre -drainage -code residence or business to connect to our system would be continuation of the negative impacts of unmitigated historic development and detrimental to staff ability to manage the capacity of our systems in the future. Change #2: Removing Edmonds Way as a direct discharge basin o Old: Current code recognizes the Edmonds Way drainage basin as a partial direct discharge basin with reduced requirements for LID (MR #5) and flow control (MR #7) o New: Staff propose revisions to remove all exemptions for the Edmonds Way basin, resulting in equal application of all drainage code requirements to the Edmonds Way basin. o Staff Opinion: The Edmonds Way drainage pipe (WSDOT) is known to overflow to the Edmonds Marsh under certain conditions; since this demonstrates a capacity issue and now discharges to a non -manmade water body, the direct discharge exemption should no longer apply. o Potential Impacts: This simply means that projects within the Edmonds Way basin comply with the exact same requirement as the rest of the City. Change #3: Increasing protection of Perrinville Creek o Old: Current code applies the drainage code uniformly to all areas of City, including the Perrinville Creek Basin. o New: Staff propose revisions to increase the retrofit requirement for LID and increase the flow control standard within the Perrinville Creek basin (only). ■ Retrofit (applies to existing unmitigated surfaces to remain): 25% _> 50% ■ Flow control: Match 50-year peak => Match 100-year peak (ie. King County Level 3 Standard) o Staff Opinion: The Perrinville has been beaten up by past development and needs better protections. The change in flow control standard is typical for impacted water ways and the retrofit requirement attempts to rectify some of the past abuses on the creek. Staff believe it's fair to ask the residents who have directly benefitted from the impacts on the creek to chip in a little extra towards its recovery. o Potential Impacts: Flow control will have minimal impacts; larger projects will have larger detention facilities with minimal impacts and cost on already large budgets. However, the 07/13/21 PPW Committee Minutes, Page 5 retrofit requirement has the potential to impact homeowners who are not necessarily developing and may become cost -limiting to smaller projects in this basin. Change #4: Detention preferred over perforated pipes o Old: Current code adopted the Ecology BMP list for MR #5 and then added an Edmonds - specific detention BMP to the end of the list, making its priority less than that of a perforated pipe connection. o New: Staff propose revisions to elevate the Edmonds -specific detention BMP to be considered before a perforated pipe connection. o Staff Opinion: Perforated pipes connection are only used when infiltration is already found undesirable for some reason; because of this fact, they are of very little mitigation benefit and often get proposed in dangerous or undesirable locations. Staff have run flow comparisons to demonstrate that the detention option generates far more desirable decreases in the flow rates for sites this condition would apply to. o Potential Impacts: At a minimum detention would be anticipated in nearly all cases where drainage review is required. Detention systems may add some cost to developing compared to the perforated pipe connections but will go much further in protecting the City system and surfaces waters. What's Next? o Staff is requesting comments from the City Council. o We are requesting comments now, prior to beginning the permitting and approval process. o Approvals Needed o Department of Commerce o SEPA o No Ecology review o Public Input o SEPA comment period required o Public hearing required before final approval/adoption o Additional workshops, as directed/if needed. o Questions/concerns: Zachary.Richardson@edmondswa.gov Questions and discussion followed regarding support for the increased protection of Perrinville Creek, rationale for the 2,000 square foot threshold, thresholds that trigger a drainage review, whether lowering the threshold would improve efficiency, striking a balance between the cost of hiring a geotech and benefits of additional detention, ability for cumulative expansions to avoid the threshold, removing Edmonds Way as a direct discharge basin, other areas where direct discharge is possible, and direct discharge exemptions. Action: Presentation to full Council July 20 3. ADJOURN The meeting was adjourned at 4:51 p.m.