West Irving Creek Initial Design Public Meeting, April 6, 2021

MEETING INSTRUCTIONS

Register Your Register your Attendance on the attendance on the website: website: www.cityofirving.org/ www.cityofirving.org/ WestIrvingCreek WestIrvingCreek

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All participant mics are muted All participant video is off Submit questions in chat for Q&A Direct all questions and comments to Emily Sestak (Host)

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Click “Chat” to open chat window

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Select Emily Sestak (Host) Note: Messages will not be visible to other participants www.cityofirving.org /WestIrvingCreek

CAPITAL IMPROVEMENTS PROGRAM

WEST IRVING CREEK Comprehensive Planning Study

COMMUNITY MEETING #1

APRIL 6, 2021

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INTRODUCTIONS & BACKGROUND PROJECT OVERVIEW

PUBLIC Q&A

MEETING AGENDA

Can the City please share photos to be used in presentations and the document?

1. I N T R O D U C T I O N S

Confluence Near Tipton Road

& BACKGROUND

www.cityofirving.org /WestIrvingCreek

PROJECT TEAM

Walter Thomas, PE

Garry Fennell, PE, CFM

Brent Redd

Justin Oswald, PE, CFM

City Engineer

Floodplain Manager

MDU Program Administrator

Project Manager Freese and Nichols, Inc.

PLUS MANY OTHERS IRVING CITIZENS FREESE AND NICHOLS IRVING MAYOR/CITY COUNCIL PARKS AND RECREATION I MC PH R O O FV ETM + A CDAEPEI PT ABL E N A LE EN NT TS & E X P E R TWI SA ET E R U T I L I T I E S www.cityofirving.org /WestIrvingCreek

WHAT IS WEST IRVING CREEK? ▪ Drains 3+ square miles – 15%+ of the City south of SH-183 ▪ Runs for 3+ miles – from Wyche Park to outfall south of Oakdale Road

▪ Constructed in the 1960s ▪ Inadequate to meet current standards for conveyance of 100-year flood events www.cityofirving.org /WestIrvingCreek

WEST IRVING

HISTORY ▪ Recent home flooding ▪ Piecemeal improvements over time ▪ Urgent improvements underway: ▪ Wyche Park Detention ▪ Currently designing capacity increase. Complete May 2021.

▪ Hogbottoms Outfall Debris Collector ▪ Currently in construction.

Complete July 2021.

Channel Near Capacity at Bowman Street

▪ MDU program provides opportunity for a long term fix www.cityofirving.org /WestIrvingCreek

MUNICIPAL DRAINAGE UTILITY ▪ City reinvesting in the MDU ▪ Issuing bonds backed by fee increase ▪ #1 City Council priority for MDU ▪ Project expected to cost $80-$90 million

▪ First step: a comprehensive planning study

www.cityofirving.org /WestIrvingCreek

2. P R O J E C T

Delaware Creek Construction

OVERVIEW

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WEST IRVING CREEK

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CHANNEL OVERFLOWS

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PUBLIC I M PA C T E D 250

PROPERTIES FLOODED

$70 million FLOOD DAMAGES

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Segment D

Segment C

Segment B

PHASED C A PA C I T Y IMPROVEMENT S PLANNING STUDY UNDERWAY Segment A

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CAPACITY ▪ Reconstruct Channel with Vertical Walls ▪ Minimize Footprint ▪ Replace or Add Fencing ▪ Improve Aesthetics ▪ Provide 100-Year Capacity and Eliminate Flood Insurance Requirements (if possible) ▪ Similar to recent Delaware Creek Project

Delaware Creek www.cityofirving.org /WestIrvingCreek

TYPICAL SECTION ▪ Narrow easement behind residential lots ▪ Vertical walls for deeper channel ▪ Construction footprint larger than the finished wall ▪ Private structures may be within easement

www.cityofirving.org /WestIrvingCreek

BRIDGES

▪ Approx. 15 Bridge Replacements ▪ Replace multi-span with single span ▪ Improve aesthetics

Live Oak Drive Delaware Creek www.cityofirving.org /WestIrvingCreek

CREEK AREAS ▪ Project limits include nearly a mile of natural channels ▪ May require regrading to protect property and road crossings

▪ May require erosion protection

Stream Bank Reconstruction

▪ US Army Corps of Engineers Permitting may dictate solution www.cityofirving.org /WestIrvingCreek

WATER &

WASTEWATER

▪ Approx. 54 conflicts ▪ Adjusted before channel work ▪ Minimize service disruption ▪ Provide capacity for future needs ▪ Other on-going replacement work in the area

Wastewater Bore Delaware Creek www.cityofirving.org /WestIrvingCreek

PARKS

Wyche Park

Markwood Park

Shady Grove Trail Park

▪ Evaluate trail, park amenities, and water features www.cityofirving.org /WestIrvingCreek

DEBRIS

COLLECTION

▪ Debris deposits in parks and downstream areas ▪ Existing debris baskets in upstream channel ▪ Screen and baskets at the outfall ▪ Evaluating large scale collection within watershed

Debris Screen and Baskets at Outfall www.cityofirving.org /WestIrvingCreek

PROJECT SCHEDULE COMPREHENSIVE STUDY

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Data Collection Community Meeting #1 Engineering Analysis Concept Design Community Meeting #2 Finalize Report

▪ Design of first phase expected to begin Q1 2022 ▪ Construction of first phase expected to begin Q2 2023

www.cityofirving.org /WestIrvingCreek

PROJECT SCHEDULE DESIGN AND CONSTRUCTION

‘21

‘22

‘23

‘24

‘25

‘26

‘27

‘28

’29

Planning Study Design Phase 1 Design Phase 2 Design Phase 3 Design Phase 4 Construction Phase 1 Construction Phase 2 Construction Phase 3 Construction Phase 4

▪ Design and Construction expected to proceed sequentially ▪ Community meetings to be held throughout design ▪ Construction of each phase expected to occur over 2 years after bid and award

▪ Phases 3 and 4 construction pending final identification of funding source

www.cityofirving.org /WestIrvingCreek

PROJECT WEBSITE

▪ http://www.cityofirving.org/WestIrvingCreek ▪ Site will be refreshed with project updates ▪ Register your attendance at this meeting ▪ Provide your feedback about flooding and project concerns! www.cityofirving.org /WestIrvingCreek

3. Q U E S T I O N S

Before and After on Delaware Creek

& ANSWERS

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MEETING INSTRUCTIONS

Register Your Register your Attendance on the attendance on the website: website: www.cityofirving.org/ www.cityofirving.org/ WestIrvingCreek WestIrvingCreek

2

1

▪ ▪ ▪ ▪

All participant mics are muted All participant video is off Submit questions in chat for Q&A Direct all questions and comments to Emily Sestak (Host)

1

Click “Chat” to open chat window

2

Select Emily Sestak (Host) Note: Messages will not be visible to other participants www.cityofirving.org /WestIrvingCreek

WEST IRVING CREEK

www.cityofirving.org /WestIrvingCreek