PPII Public Outreach Lessons Learned Private Property Infiltration and Inflow Reduction Program. Thomas M. Grisa, P.E.

PPII Public Outreach

Lessons Learned

Private Property Infiltration and

Inflow Reduction Program

Meeting Overview

• Welcome and Introductions

– Tom Grisa, Director of Public Works

• Overview of the Problem

– Tom Grisa

• What Is Private Property I/I and What Can We Do

About It?

– Andy Lukas, Brown and Caldwell

• Inspection Process

– Andy Lukas

Outreach Promoting Inspection

• Introductory Letter sent to each property

• Public Information Meetings

• Signage promoting meetings

• Newsletter articles

• Webpage on City website

• Phone calls and conversations at counter

• More personal letters (four total)

MMSD Informational Video

More videos and information available at www.basementconnection.mmsd.com

Where Does I/I Come From?

What the City Program Pays For

Sewer Laterals City pays Maximum

Reimbursement

Inspections 100% N/A

Sewer Laterals 75% $8,000

Removal of a Foundation Drain 100% $8,000 Repair to outdoor cleanout pipes 50% $100 Installation of glass blocks in window wells to keep

water out

50% $500

Extend roof downspouts away from house foundation

50% $25 for each downspout

extension Private drainage improvements to keep water

away from basements

50% $8,000

Brookfield’s PPII Inspection Process

external PPII inspection

– Enter home through convenient pathway to basement

– Inspect basement drainage plumbing for PPII sources

– Walk perimeter of house for other PPII sources

– Note observations on electronic notepad

Brookfield’s PPII Inspection Process

– Camera inserted from sewer main into lateral

– Lateral located using “sonde” attached to camera

– Dye injected into ground above lateral

Outreach Promoting Repairs

• Letters with results,

recommendations and eligibility for cost share

• Phone calls and

conversations at counter

• Inspector on site

• Residents see work

performed at

Outreach that Increases Participation

• Provide financial incentive

• Contact information (ph. #’s, email addresses)

• Pound the pavement, knock on doors

• Talk to people (listen as well)

• Encourage neighbors to share their story

Lessons Learned: SSES

Inspections

Elizabeth Gruell, Brown and Caldwell Tom Nejedlo, AECOM

1. Home Inspections

– Internal

– External

2. Lateral Inspections

– Connection to the main (dye testing)

– Lateral itself

3. Smoke Testing

4. Data Management

Sewer System Evaluation Survey

(SSES) Inspections

• Scheduling difficulties

• Limited clear water identified

• Male/female inspection team

–Contingent internal inspection

Lessons Learned – Home Inspections

• Closed Circuit Televising (CCTV)

• CCTV with Rainfall Simulation

– Storm Sewer/Ditch Flooding with Dye

– Dye Injection

– Soaker Hose

• Wet Weather CCTV

Types of Lateral Inspections

• Difficult to duplicate wet weather

• Costly

• Public perception

• Dye visibility

• Works well in drought conditions

• Targeted approach

• Identify and quantify flow

Lessons Learned - Rainfall Simulation

• Actual conditions

• Difficult to mobilize crews

• Safety considerations • Visibility • Submerged camera • Uncontrolled environment – Size of event – Duration – Localization

Lessons Learned - Wet Weather

• Lateral camera cable length

• Lateral alignment and transitions

• Inflow not always observed at source (ex. roots)

• Lateral material

• Existing ground water conditions

Overall Lessons Learned – Lateral

Inspection

• Cost effective

• Primarily inflow

• Passive inspection method

• Not all sources identified

• Visibility

Lessons Learned - Smoke Testing

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Connected Downspout

• Consider overall objectives

• Simplicity

• Consistency

• Data storage

• Quality control

Lessons Learned – Data Management

Elizabeth Gruell

Brown and Caldwell

[email protected] 414-203-2910 Tom Nejedlo AECOM [email protected] 414-944-6117

Thank You

Private Property I/I Rehabilitation – Design Lessons Learned

Diane Thoune, P.E., Clark Dietz, Inc. Jerad Wegner, P.E., Ruekert-Mielke, Inc.

Planning Phase ► Funding – MMSD/municipal/private

contributions

► Consult with MMSD regarding broken

sewersheds

► Evaluate system and identify problem

areas

► Perform PPII programs in lined

Planning Phase ► Is area metered? Pre vs Post

flow comparison

► Most efficient when

properties are all together, i.e. reline all laterals in

subdivision

► Signup should occur prior

to start of work

Program Documents ► Consult with MMSD about

requirements/changes

► Include lateral repair specifications ► Verify specs meet State plumbing

code

► Addresses may change

► Include list of addresses and good

map

► Include Contractor’s requirements

for notifications and traffic control

► Meet with residents to discuss yard

disturbance and program basics, especially program goals

Project Execution ► Notify residents before starting

work

► Questions/issues will come up ► Quick decisions are important

► Residents’ questions are common ► Only enter homes when necessary ► Limit disturbance of permanent

features

► Know the restoration plan

► Residents appreciate the program ► Compare pre- and post-lining

Design Issues/Solutions

► Lack of resident sign-ups,

late sign-ups

► Specification of preferred

Questions?

Diane Thoune, P.E. Jerad Wegner, P.E. Phone: 262.657.1550 262.542.5733

Private Property I/I Rehabilitation

Lessons Learned

Nick Nadelhoffer

North Shore Engineering, Inc Joseph Tew

• Data Gathering

• Data Handling

• Specifications

• Plan for the known items • Plan for the unknowns

» How will these be handled?

• Schedule

• Discuss any deviations from the

specifications

• Communication with the residents

• Field Documentation

• Field surprises and best practices

• Communication with appropriate agencies

• Flexibility

• Maintain communication with residents & Municipality

• Preparation of field notes

• As built data documentation

• Identify and explain unique field situations

• Project report submittals