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Home My WebLink AboutUtilities 2016-02-23 COMPLETE AGENDA PACKETCity of Tukwila Utilities Committee ❖ Kathy Hougardy, Chair ❖ Kate Kruller ❖ Thomas McLeod AGENDA Distribution: P. Brodin K. Hougardy R. Turpin K. Kruller M. Hart T. McLeod Clerk File Copy Mayor Ekberg 2 Extra D. Cline L. Humphrey e-mail cover to: A. Le, B. Giberson C. O'Flaherty, K. Hougardy, F. Iriarte D. Almberg, B. Saxton, R. Tischmak S. Norris, M. Hart, G. Labanara L. Humphrey TUESDAY, FEBRUARY 23, 2016 — 5:30 PM FOSTER CONFERENCE ROOM - 6300 Building Item Recommended Action Page 1. PRESENTATION(S) a) CBD Sanitary Sewer Rehabilitation a) Forward to 3/14/16 Special Pg. 1 Bid Award for Sewer Repair at 1227 Andover Park East Consent Agenda b) NPDES Program b) Information only Pg. 3 Low Impact Development (LID) Code Update 2. BUSINESS AGENDA 3. ANNOUNCEMENTS 4. MISCELLANEOUS Future Agendas: Next Scheduled Meeting: Tuesday, March 15, 2016 SThe City of Tukwila strives to accommodate individuals with disabilities. Please contact the Public Works Department at 206- 433 -0179 for assistance. TO: FROM BY: DATE: ,^ 0 Lity of Tukwila Allan Ekberg, Mayor Public Works Department - Bob Giberson, Director Mayor Ekberg Utilities Committee Bob Giberson, Public Works Director"Wi Mike Cusick, Senior Program Manager February 19, 2016 SUBJECT: CBD Sanitary Sewer Rehabilitation Project No. 91140203 Bid Award for Sewer Repair at 1227 Andover Park East ISSUE Award contract to R. L. Alia Company for the CBD Sanitary Sewer Rehabilitation — Sewer Repair at 1227 Andover Park East. During the cleaning and video inspection of the sanitary sewer near 1227 Andover Park East by Michels Corporation, the contractor for the 2015 CBD Sanitary Sewer Rehabilitation Project, a section of sewer pipe was found in a condition that could not be relined and requires excavation to repair. ANALYSIS The City requested quotes from five contractors for the sewer repair near 1227 Andover Park East. Two of the five contractors returned quotes to the City. The low quote of $69,717.56 was from R.L. Alia Company and the second highest quote of $106,471.23 was from Shoreline Construction. Both firms have done satisfactory work for the City in the past. BUDGET AND BID SUMMARY Engineer's Remaining Estimate Bid Amount 2016 Budget R.L. Alia Company $60,364.72 $69,717.56 139,760.86 Contingency 20% 13,943.51 Grand Total $60364.72 $33&-61.07 $ 139,760.86 I -I : [0101 m I m I Council is being asked to approve the contract with R. L. Alia Company in the amount of $69,717.56 for the CBD Sanitary Rehabilitation — Sewer Repair at 1227 Andover Park East Project and consider this item on the Consent Agenda at the March 14, 2016 Special Meeting. W:TW Eng\PROJECTS\A- SW Projects\CBD Sewer Rehabilitation (91140203)\Info Memo CBD SEWER 1227 APE Bid Award 02-19-16 gl sb.docx City of Tukwila Allan Ekberg, Mayor TO: Mayor Ekberg Utilities Committee FROM: Bob Giberson, P.E., Public Works Director 46-1111 BY: Greg Villanueva, NPDES Coordinator DATE: February 19, 2016 SUBJECT: NPDES Program Project No. 99341210 Low Impact Development (LID) Code Update ISSUE LID code presentation and update. BACKGROUND The City's National Pollutant Discharge Elimination System (NPDES) Phase 11 permit requires that the City review, revise, and make effective their local development- related codes, rules, standards, or other enforceable documents to incorporate and require LID principles and LID Best Management Practices no later than December 31, 2016. ANALYSIS The City contracted with Otak, Inc. to perform an LID gap analysis and assist the City with LID implementation. Otak will provide a 15 minute presentation on LID and gap analysis progress to date. This presentation will inform Council members of the new LID rules required for the Tukwila Municipal Code. FINANCIAL IMPACT The LID Gap Analysis consultant agreement was approved in December 2015 for $59,006, of which $50,000 is funded by a Department of Ecology's Water Quality Stormwater Capacity Grant. INFORMATION ONLY Information only. 191 C.\Users\susan\AppData\LocakMicrosoft\Windows\Temporary Internet Files\Content.0utlook\360AGYOJ\Info Memo Otak LID Codes 02-19-16 gi.docx City of Tukwila LID Code Update Presentation to City Council Utilities Committee February 23, 2016 a) Goals for Tonight Discuss a process to update Tukwila's development and stormwater codes to remove barriers to Low Impact Development (LID), reduce stormwater runoff through the use of LID site planning practices, and require LID facilities. • What is LID? • Why are we doing this? • How will we achieve it? • What is next? IP 0) ▪ 1 What is LID? Low Impact Development is a set of site development principals to minimize impervious surfaces, maintain native vegetation, and manage stormwater runoff close to its source. Examples • Skinny Streets • Parking Area Reduction • Clustering • LID BMPs Sea Street LID, Seattle, WA. Photo courtesy of Washington State Department of Ecology 1 Parking Area Reduction & Stormwater Management Parking lots and roof tops are largest contributors of impervious surface coverage in commercial areas (Schueler, 1995), and a parking lot can require up to 400 sf per vehicle (i.e. 1 acre / 100 cars) (CHI, 2000). Image from Strongtowns.org Image from Inland Paving Asphalt Co, Tri- Cities, WA Image from Elected Official Briefing, by AHBL and Department of Ecology LID Best Management Practices (BMPs) The King County Surface Water Design Manual will require LID BMPs such as Bioretention, Permeable Pavements, Dispersion, and Downspout Infiltration on almost all development sites. ti stem grass curlier compost- amended self - _ rous pavers • OD Road, °` ; Commerc ra1� _arder Graphic courtesy City of Seattle Regulatory Framework National Pollutant Discharge Elimination System (NPDES) CD Municipal Stormwater Permit • Clean Water Act • Washington Department of Ecology • 2013 — 2018 Permit Cycle • Permit Requirement S5.C.4 Revise Development & Stormwater Codes to Require LID • Minimize Impervious Surfaces • Minimize Loss of Native Vegetation • Minimize Stormwater Runoff • Make LID the Common Approach to Site Development 11 FOR Fq Hydrology Before / After Traditional Development 0 Images from Integrating LID into Local Codes, by AHBL and Puget Sound Partnership • Stream discharges increase rapidly and recede quickly • Higher flow velocities = greater erosion and pollutant transport • Peak flow event frequency increases • Groundwater recharge reduced Goal of LID • Urban Landscape More Like Pre - Development Hydrology Example (Less Runoff) Wet is Pr (ftrfittri3 r Ggepiain err irabut: sse Design for Miller Creek, Burien NERA, Otak, Inc. • Streets • Safety & Convenience • Attractive Places • Street Widths • Parking • Landscaping • Drainage / Stormwater Control • Street Network • Parking Lots • Clearing & Grading • Stormwater Facilities • Buildings • Pavement • Vegetation • Stormwater City Development Codes / Standards Guide: • Creation of impervious surfaces • Removal or retention of native vegetation • Location of development • How /where stormwater is managed W ▪ 1 Where to Look • Title 11: ROW Use • Title 14: Water and Sewers • Title 17: Subdivisions • Title 18: Zoning • Infrastructure Design and Construction Standards • Comprehensive Plan Image from Elected Official Briefing, by AHBL and Department of Ecology Topics • Site Planning and Assessment • Healthy Soils • Landscaping and Vegetation • Hard and Impervious Surfaces • Bulk and Dimensions • Clearing and Grading • Streets and Roads • Parking • Design Guidelines and Standards • Stormwater Management and Maintenance • Subdivision and Planned Unit Development • Critical Areas and Shoreline Management Image from Integrating LID into Local Codes, by AHBL and Puget Sound Partnership 01 Update City Codes and Standards 28 Ft Street Parkins on bow sides 1 24 Ft Street Parkmg on i sib Burien 2008 Road Design and Construction Standards Conventional Open ... Open Space Images by AHBL For example: Standard Streets and Planned Unit Developments Outcomes • Reduce Impervious Surfaces • Encourage Retention of Native Vegetation • Manage Stormwater Close to the Source • Permit Compliance T� 0) - 1 Image by Otak, Inc. 1 Outcomes Library 3y Otho. s orous Concrete - . Permeable Payers (Vehicular) ), _ 40; South 144th Street —k - • - - -) Permeable Pavers (Pedestrian) Section A-A Concrete Proposed Pedestrian Lights (Typ.) sed Street Trees (Typ.) —Asp° Concrete 1" 30"-0" Section B-B Section C-C South 144th Street Streetscape Enhancements August 20th, 2012 City Staff Participants Project Management Road Standards Use of Right of Way' Engineering Community Development • Site Planning • Parking • Subdivisions • Landscaping Fire Marshal Attorney • Street Widths • Authority • Landscaping • Legal Review Consultant Code Review Drafts Ecology requires participation from city officials responsible for setting and enforcing development codes. Roadmap 1. Assemble Project Team 2. Review Existing Codes and Standards (Gap Analysis) 3. Understand General LID Topics 4. Amend Existing Codes and Develop New Codes to Fill Gaps 5. Public Review and Adoption Process ( Final Adoption ) 6. Ensure Successful Implementation 1 • 3 Deadline December 31, 2016 • 2 5 r� W We are here October 2016 Qi astiOns?