Impact Development Symposium - Villanova University€¦ · H&S File: 90034-Presentation 4 NYC Green Infrastructure Plan Build cost‐effective grey infrastructure Optimize the existing

1H&

S F

ile: 9

0034

-Pre

sent

atio

n

2011 Low Impact Development SymposiumImplementation and Evaluation of Green Infrastructure Stormwater Retrofits to Reduce Combined Sewer Overflows at a Public Housing Facility in New York City

Matthew Jones, EI, PhD, Hazen and SawyerJulie Stein, NYCDEPSandeep Mehrotra, PE, Hazen and SawyerWilliam Leo, PE, HDR‐HydroqualRichard Claytor, PE, Horsley Witten GroupMarcus Quigley, PE, GeoSyntec

September  27,  2011

2H&

S F

ile: 9

0034

-Pre

sent

atio

n

NYCGreen Infrastructure

Background

3H&

S F

ile: 9

0034

-Pre

sent

atio

n

Mayor Bloomberg’s PlaNYC

A comprehensive sustainability plan to create a greener, greater New York, PlaNYC is a roadmap to achieve 10 goals:

Create enough housing for our growing population

Ensure all New Yorkers have parks within a 10‐minute walk

Clean up all contaminated land in New York City

Develop water network back‐up systems

Improve travel times by adding transit capacity for millions

Achieve “State of Good Repair” on our transportation system

Upgrade our energy infrastructure to provide clean energy

Achieve the cleanest air of any big city in America

Reduce global warming emissions by 30%

1

2

3

4

5

6

7

8

9

10

Open 90% of our waterways and protect natural areas

4H&

S F

ile: 9

0034

-Pre

sent

atio

n

NYC Green Infrastructure Plan

Build cost‐effective grey infrastructure

Optimize the existing wastewater system

Institutionalize adaptive management, model impacts, measure CSOs, and monitor water qualitySustain stakeholder engagement55

Control runoff from 10% of impervious surfaces through green infrastructure and other source controls

54

52

51

53

5H&

S F

ile: 9

0034

-Pre

sent

atio

n

Stormwater Source Control Pilot Study

6H&

S F

ile: 9

0034

-Pre

sent

atio

n

Stormwater Pilot StudyObjectives

Develop stormwater pilot designs

Construct and maintain pilots within NYC

Evaluate pilot performance

7H&

S F

ile: 9

0034

-Pre

sent

atio

n

Distribution of Stormwater PilotsA Shoelace Park Bioretention

B Bronx River Houses Pilots

C Metropolitan Ave. Blue Roof

D Ridgewood Ave. ETP

E Ridgewood Ave. SSIS

F Eastern Parkway SSIS

G Howard Ave. SSIS

H Blake Ave. ETP

I Union St. ETP

J Union St. SSIS

K Sutter Ave. ETP

L Autumn Ave. ETP

M N&S Conduit Bioretention

N PS 118 Green Roof

O 99th Ave. SSIS

P Far Rockaway Pavement

Q Far Rockaway Bioretention

8H&

S F

ile: 9

0034

-Pre

sent

atio

n

Bronx River Houses

9H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Blue Roof

10H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Blue Roof

A

A

Orifice Outlet Controls

System Characteristics:•Flexibility

•Size of system•Placement configuration

•Ease of installation•Coarse stone ballast•Retrofit designs•Use existing drains

•Specialized outlet designs•Detention time and flow rate•Minimize clogging

Coarse Stone Ballast(expanded shale)

Geotextile Drainage Layer with Corrugated Plastic

11H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Blue Roof

12H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Blue Roof

13H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Bioretention

14H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Bioretention Construction

15H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Bioretention Construction

16H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Bioretention Construction

17H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Bioretention Construction

18H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Bioretention Construction

19H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Bioretention Construction

20H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH BioretentionApril 2011

21H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH North Parking Lot

22H&

S F

ile: 9

0034

-Pre

sent

atio

n

North Parking Lot

1

22

1

3

3

4

4

5

5

Chamber System

Pre‐Treatment

Diversion Inlet

Outflow Monitoring Manhole

Connection to Combined Sewer

23H&

S F

ile: 9

0034

-Pre

sent

atio

n

Stormwater Chambers Construction

24H&

S F

ile: 9

0034

-Pre

sent

atio

n

Stormwater Chambers Construction

25H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH South Parking Lot

Replace

26H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH South Parking Lot

27H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH South Parking Lot

28H&

S F

ile: 9

0034

-Pre

sent

atio

n

Education Elements

29H&

S F

ile: 9

0034

-Pre

sent

atio

n

Stormwater PilotMonitoring Program

30H&

S F

ile: 9

0034

-Pre

sent

atio

n

Monitoring Objectives

Storm hydrology and hydraulics

Water quality

Qualitative performance/ maintenance needs

Ancillary benefits

31H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Blue Roof Monitoring

32H&

S F

ile: 9

0034

-Pre

sent

atio

n

BRH Bioretention Monitoring

33H&

S F

ile: 9

0034

-Pre

sent

atio

n

Summary

Increases in stormwater source control currently underway

Variety of unique challenges in an ultra-urbanized area

Potential for multiple benefits from stormwater management

Opportunities to provide high level of stormwater management

34H&

S F

ile: 9

0034

-Pre

sent

atio

n

Questions?Matthew Jones, EI, PhDHazen and Sawyer, [email protected]‐833‐7152

Sandeep Mehrotra, PEHazen and Sawyer, [email protected]‐777‐8400