Raleigh’s Strategic Approach

to Stormwater Management

ACEC of NC & PENC

Joint Environmental Committee

August 24, 2017

Today’s Agenda

Overview of Raleigh’s Stormwater Program Key Strategic Initiatives Making Strategy Operational

Integrated Stormwater Project Prioritization Model Q&A Session

2

Stormwater Services Overview

3

Mission: Manage stormwater to preserve and protect life, support healthy natural resources, and complement sustainable growth for the vibrant Raleigh community.

Stormwater Infrastructure (CIP) Program

Drainage Assistance Program

Water Quality

Floodplain Management

Stormwater System Maintenance

Asset Management

Development Review & Inspection

Watershed Planning

Raleigh Stormwater Team

4

Enhanced organizational resources that align with the community’s needs and desired level of service.

The Operating Budget

5

FY18 Total Proposed Operating Budget:

$25,863,738

Business Services $521K

2%

Drainage Assistance $747K

3% Infrastructure Projects Management

$1M 4%

Water Quality and Mapping Program

$1M 4%

Development Plan Review and Inspections

$1.9M 7%

Program Management and Planning

$3M 12%

Indirect Cost $3M 12% Drainage System Maintenance

$5.5M 21%

Stormwater CIP $9.1M

35%

Note: K=Thousand M=Million

Key Strategic Initiatives

6

Major policy and project delivery improvements to the Drainage Assistance Program.

0

5

10

15

20

25

30

FY15 FY16 FY17 PROJ FY18 PROJNumber ofProjects

17 projects valuing $1.5 million completed in FY17

27 projects at $2.7 million under construction in FY18

18 projects valuing $720,491 completed in FY15

15 projects valuing $611,717 completed in FY16

Key Strategic Initiatives

7

Flood hazard mitigation efforts along Capital Boulevard at Milner Inn and Capital Inn.

Before & After at Milner Inn

Key Strategic Initiatives

8

Capital Inn Demolition – November 2016

To meet FEMA floodplain

standards, buildings on this property were demolished to

address ongoing flooding in this area. Green space will take its place to create a more natural condition

that reduces flooding.

This project is part of Raleigh’s larger revitalization of Capital

Boulevard.

Key Strategic Initiatives

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Development of stormwater-specific Asset Management and Watershed Planning programs

Green Stormwater Infrastructure development and implementation

Increased ability to regulate stormwater at Single-Family Residential properties (TC-2-16)

Development and implementation of an Integrated Stormwater Project Prioritization Model

Growing Capital Improvement Program to provide sustainable stormwater infrastructure

Making Strategy Operational

10

An Overview of the Integrated Stormwater

Project Prioritization Model

11 Reducing flooding hazards in streets

Making Strategy Operational

12 Reducing structural flooding hazards

Making Strategy Operational

13

Reducing non-structural flooding hazards [limited access]

Making Strategy Operational

14

Enhancing impaired or degraded streams

Making Strategy Operational

15

Repairing aging and undersized infrastructure

Making Strategy Operational

16 Repairing failing infrastructure

Making Strategy Operational

17

Addressing drainage concerns affecting private properties

Making Strategy Operational

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Using Green Stormwater Infrastructure practices

Emerging Needs and Opportunities

19

The Prioritization Model

20

The Prioritization Model

21

Scoring Metrics – Flood Hazard Reduction

7 5 3

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Scoring Metrics – Asset Management

8 5

7

10

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Scores & Decision Making Process

Project ID

Number Project Name

General

Category

of ProjectPrimary Type of

Project Sub-Watershed

Council

District

Total

Project

Score

(TPS)

Safety

Criticality

Score

(SCS)

Mission

Criticality

Score

(MCS) Lead Group for Project

Study and/or

Engineering

Design Cost Construction Cost Total Project CostWatershed Area

Served by Project Cost / Area Served

Number of

Parcels Directly

Impacted

Cost / Parcel(s) Directly

Impacted

Annual TN Pollutant

Load Reduced Cost / TN Reduced

Annual TSS Pollutant

Load Reduced Cost / TSS Reduced Cost-Score Index

(0 - 100) (0 - 100) (0 - 100) ($) ($) ($) (in Acres) ($/Acre) (# of parcels) ($/# of parcels) (lbs TN/yr) ($/lbs TN/yr) (lbs TSS/yr) ($/lbs TSS/yr) ($/TPS)

210-2015-0001 Northshore Lake/Spillway Rehab/Wetland CIP Integrated Marsh Creek B 73.39 100.00 91.74 Infrastructure (210) $375,000 $4,091,722 $4,466,722 850.0 5,255 26 171,797 811 5,508 205,304 22 60,861

Project ID

Number Project Name

General

Category

of ProjectPrimary Type of

Project Sub-Watershed

Council

District

Total

Project

Score

(TPS)

Safety

Criticality

Score

(SCS)

Mission

Criticality

Score

(MCS)

(0 - 100) (0 - 100) (0 - 100)

210-2015-0001 Northshore Lake/Spillway Rehab/Wetland CIP Integrated Marsh Creek B 73.39 100.00 91.74

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Scores & Decision Making Process

Project ID

Number Project Name

General

Category

of ProjectPrimary Type of

Project Sub-Watershed

Council

District

Total

Project

Score

(TPS)

Safety

Criticality

Score

(SCS)

Mission

Criticality

Score

(MCS) Lead Group for Project

Study and/or

Engineering

Design Cost Construction Cost Total Project CostWatershed Area

Served by Project Cost / Area Served

Number of

Parcels Directly

Impacted

Cost / Parcel(s) Directly

Impacted

Annual TN Pollutant

Load Reduced Cost / TN Reduced

Annual TSS Pollutant

Load Reduced Cost / TSS Reduced Cost-Score Index

(0 - 100) (0 - 100) (0 - 100) ($) ($) ($) (in Acres) ($/Acre) (# of parcels) ($/# of parcels) (lbs TN/yr) ($/lbs TN/yr) (lbs TSS/yr) ($/lbs TSS/yr) ($/TPS)

210-2015-0001 Northshore Lake/Spillway Rehab/Wetland CIP Integrated Marsh Creek B 73.39 100.00 91.74 Infrastructure (210) $375,000 $4,091,722 $4,466,722 850.0 5,255 26 171,797 811 5,508 205,304 22 60,861

Cost / Area Served

Number of

Parcels Directly

Impacted

Cost / Parcel(s) Directly

Impacted

Annual TN Pollutant

Load Reduced Cost / TN Reduced

Annual TSS Pollutant

Load Reduced Cost / TSS Reduced Cost-Score Index

($/Acre) (# of parcels) ($/# of parcels) (lbs TN/yr) ($/lbs TN/yr) (lbs TSS/yr) ($/lbs TSS/yr) ($/TPS)

5,255 26 171,797 811 5,508 205,304 22 60,861

Model Implementation

1. Each section team uses the model to help envision, identify, and evaluate potential projects on an ongoing basis.

2. Projects are evaluated quarterly and placed into an integrated master CIP projects portfolio.

3. The developing CIP portfolio is reviewed by the entire CIP leadership team.

4. Strategic updates for the annual CIP program budget are provided to Raleigh’s Stormwater Commission for consideration.

5. Improvements/adaptive management updates are made to the model to promote best practices.

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Stormwater CIP Planning Process

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City of Raleigh

Stormwater Management Program

Master Developing CIP Projects Portfolio [Updated as of 11 August 2016]

Project ID Number Project Name Project Stage

Evaluation Date

(most recent)

General

Category of

Project CIP Sub-Category

Primary Type of

Project Sub-Watershed

Council

District

Total

Project

Score (TPS)

Safety

Criticality

Score

(SCS)

Mission

Criticality

Score

(MCS)

(0 - 100) (0 - 100) (0 - 100)210-2015-0039 Ramblewood Drive Drainage Improvements Preliminary 8/24/2015 CIP Street Drainage System ImprovementsInfrastructure Crabtree Creek E 69.44 100.00 78.41

210-2015-0011 White Oak Lake Dam Rehab Budgeted 8/24/2015 CIP Lake Preservation Integrated Simmons Branch D 65.24 80.00 71.65

210-2015-0025 Swann St Area Improvements (Phase 1) Active 8/24/2015 CIP TBD Infrastructure Crabtree Creek E 61.65 90.00 70.08

210-2015-0006 E. Millbrook Preliminary 8/24/2015 CIP TBD Integrated Big Branch A 60.25 80.00 73.20

210-2015-0026 Swann St Area Improvements (Phase 2) Budgeted 8/24/2015 CIP TBD Infrastructure Crabtree Creek E 59.00 90.00 70.08

210-2015-0010 Wycliff Road Preliminary 8/24/2015 CIP TBD Water Quality House Creek E 57.82 80.00 67.34

210-2015-0018 Knights Way/Audobon/Rainwood/Wagram Ct (Phase 5)Active 8/24/2015 CIP Neighborhood Drainage System ImprovementsInfrastructure Perry Creek A 55.98 70.00 61.53

210-2015-0033 Swift Drive / Pineview Drive Drainage Improvements (Simmons Branch Phase 2)Preliminary 8/24/2015 CIP Neighborhood Drainage System ImprovementsIntegrated Simmons Branch D 55.56 80.00 58.40

210-2015-0007 Hershey Court Preliminary 8/24/2015 CIP TBD Planning/Study Haresnipe E 55.52 80.00 67.34

210-2015-0003 Whispering Branch Road Area Drainage ImprovementsBudgeted 3/4/2015 CIP TBD Planning/Study Haresnipe E 54.38 90.00 67.30

210-2015-0008 Dana Drive Preliminary 8/24/2015 CIP TBD Planning/Study Walnut Creek D 53.50 80.00 67.34

210-2015-0009 Braceridge Road Preliminary 8/24/2015 CIP TBD Planning/Study Haresnipe E 51.32 80.00 67.34

210-2015-0004 Morningside Drive Preliminary 3/4/2016 CIP TBD Infrastructure House Creek E 51.15 80.00 57.97

210-2015-0034 Laurel Hills Road Lake Dam & Spillway RehabActive 1/12/2016 CIP Lake Preservation Infrastructure Crabtree Creek E 50.63 80.00 56.98

210-2015-0045 Glenbrook Drive Preliminary 8/24/2015 CIP Street Drainage System ImprovementsInfrastructure Walnut Creek C 49.56 80.00 56.19

210-2015-0001 Schaub Drive Preliminary 3/4/2016 CIP TBD Infrastructure Bushy Branch D 46.98 100.00 50.15

216-2015-0003 2925 Pinehurst Dr. Active 10/5/2015 DA Street Drainage System ImprovementsInfrastructure Marsh Creek B 46.61 60.00 48.04

210-2015-0044 Jupiter Street / Pinehurst Drive Preliminary 8/24/2015 CIP Street Drainage System ImprovementsInfrastructure Marsh Creek B 46.35 70.00 50.04

210-2015-0005 West Drewry Lane Preliminary 3/4/2016 CIP TBD Planning/Study Crabtree Creek E 46.06 70.00 50.15

210-2015-0002 Marcom Street Preliminary 3/4/2016 CIP TBD Infrastructure Bushy Branch D 45.66 90.00 52.94

216-2015-0014 600 Glennbrook Preliminary 12/4/2015 DA General Drainage Infrastructure Infrastructure Walnut Creek D 45.65 80.00 45.94

210-2015-0020 Beechwood Dr Area Drainage Improvements (Phase 1)Active 8/24/2015 CIP Neighborhood Drainage System ImprovementsInfrastructure Marsh Creek A 44.37 80.00 47.83

210-2015-0037 Brentwood Today Stream / Wetland RestorationActive 1/12/2016 CIP Stream Restoration Planning/Study Marsh Creek B 42.90 40.00 44.05

216-2015-0001 901 E Davie St Active 9/25/2015 DA General Drainage Infrastructure Integrated Walnut Creek C 42.38 50.00 41.53

211-2017-0006 Millbrook Exchange Park Preliminary 8/8/2016 CIP Stream Restoration Water Quality Perry Creek A 39.72 0.00 22.68

216-2015-0002 301 Glen Valley Dr. Active 9/30/2015 DA Stream Restoration Stream/Erosion Big Branch A 39.56 50.00 34.52

210-2015-0017 Battleford Drive Preliminary 8/24/2015 CIP TBD Stream/Erosion Haresnipe A 38.74 50.00 37.72

216-2015-0022 Courtland Drive Active 2/22/2016 DA General Drainage Infrastructure Stream/Erosion Pigeon House C 37.17 50.00 34.40

216-2015-0018 3412 Astro Court Active 2/23/2016 DA General Drainage Infrastructure Stream/Erosion Marsh Creek B 36.88 40.00 30.06

216-2015-0015 Spring Drive Preliminary 7/28/2016 DA General Drainage Infrastructure Infrastructure Haresnipe E 36.13 50.00 31.81

216-2015-0025 1209 Williamson Drive Preliminary 3/8/2016 DA General Drainage Infrastructure Integrated Perry Creek D 34.79 60.00 32.77

216-2016-0012 Hollirose Place Preliminary 6/29/2016 DA Neighborhood Drainage System ImprovementsInfrastructure Beaverdam-E B 34.49 50.00 35.30

216-2015-0023 6120/6124 River Landings Drive Preliminary 1/0/1900 DA General Drainage Infrastructure Stream/Erosion Neuse B 33.66 80.00 31.05

Prioritization Model Benefits

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Heightened program transparency and accountability

Provides a team-based, innovative, and strategic approach to stormwater management

Aligned with the City of Raleigh’s Strategic Plan

Questions?

Blair Hinkle, PE and Scott Bryant, PE City of Raleigh Engineering Services Department

Stormwater Management Division Main Phone: 919-996-3940

E-mail: RaleighStormwater@raleighnc.gov

Raleighnc.gov Search: “Stormwater”

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