Chesapeake Bay Pollution Reduction Plan › document-library › presentation...Chesapeake Bay Foundation ... Presentation Overview Introduce the Chesapeake Bay Pollution Reduction

PA Municipal Separate Storm Sewer System (MS4) TMDL Plan

Chesapeake Bay Pollution Reduction Plan

Instructor: Julie Schneider, Watershed Planner CWP

Bryan Seipp, Watershed Manager, CWP

Ruth Hocker, PA Senior Scientist CBF

June 10, 2014

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PA Municipal Separate Storm Sewer System (MS4) TMDL PlanChesapeake Bay Pollution Reduction Plan 3

Chesapeake Bay Foundation

Largest and oldest non-profit dedicated to restoring

the Chesapeake Bay and its tributary rivers and streams

Environmental education for adults and

schoolchildren in PA, MD and VA

Advocacy at the local, state and federal level, and

help for communities

Restoration program for filters: forested stream

buffers, oysters, etc.

www.cbf.org

http://www.cbf.org/


Center for Watershed Protection

Stormwater and watershed

guidance documents

National MS4 Expertise

Hands-on technical assistance

www.cwp.org

http://www.cwp.org/


Presentation Overview

Introduce the Chesapeake Bay Pollution Reduction Plan

How to develop a Plan using PA DEP’s 4 step process


Chesapeake Bay TMDL

A pollution diet for a local

waterbody.

TMDL=

Wasteload allocations (MS4

system, WWTP, industrial

point sources) +

Load allocations (septic,

agriculture) +

Margin of safety


PA DEP Requirements for Section B: Chesapeake

Bay Pollution Reduction Plan

Four Steps:

1. Narrative of MS4

2. Incorporate GI/LID/ESD into municipal infrastructure

upgrades

3. Estimate current pollutant loads (optional)

4. Identify TMDL control measures

PA DEP Document 3800-FM-BPNPSM0493 8/20/13


Step 1. Narrative of MS4

Drainage area of MS4 within the UA discharging to the

Chesapeake Bay Watershed:

1. Pervious and impervious cover (%)

2. Land use (acres)

3. Stream miles (note impaired streams) (linear feet)

*Sources of GIS data included on resource sheet





*Use local data when available

Data Source

Impervious Cover Chesapeake Bay Program

Land Use USGS National Land Cover Database

Streams PASDA

Boundary layers (municipal, county boundary, etc.)

PASDA, CBP

Urbanized Area U.S. Census Bureau





• Other information to include:

– Areas not included

• Large federal facilities (not responsible for)

• Other permitted entities

– Watersheds and tributary streams in MS4

– High quality areas

– Protected lands

– Population stats

– Other relevant information

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Army Depot in Fairview Township

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Chesapeake Bay Pollution Prevention Plan

(CBPRP)

Four Steps:

1. Narrative of MS4

2. Incorporate GI/LID/ESD into municipal infrastructure

upgrades




Step 2. Incorporate GI/LID/ESD into

Municipal Infrastructure Upgrades

• Green Infrastructure (GI)

• Low Impact Development (LID)

• Environmental Site Design (ESD)








• Example I

– Street Widening project on Main Street

• Options Considered– Bioretention

– Porous Pavement

• Considerations– On-street Parking

– Mature Trees

• Result– Neither option is feasible here because most residences do

not have driveways and loss of parking for street scape bioretention is not acceptable to community.

– Potential damage to large mature trees during construction and concerns of clogging due to leaf litter result in porous pavement being unacceptable.

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• Example II– New Township Park

• Options Considered

– Bioretention in parking lot

– Stream restoration with floodplain connection and forest buffer

• Considerations

– Costs

– Permits

– Construction timeline

• Result

– Bioretention will be implemented along the down slope perimeter of the parking lot as well as in the parking lot islands

– Stream restoration will occur in phases with phase 1 occurring at the time of park development and phases 2 and 3 occurring in subsequent years.

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(CBPRP)

Four Steps:

1. Narrative of MS4

2. Incorporate green infrastructure into municipal

infrastructure upgrades




Step 3. (Optional)

Estimate Current Pollutant Loads

Benefits:

1. Provide a baseline pollutant load for your municipality

2. Account for what you and your partners (watershed groups,

schools, etc) have done

3. Have a better understanding of current rate of progress.

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&docid=-HtZ-hQ53HlowM&tbnid=8V1HKmd6m51LkM:&ved=0CAUQjRw&url=http://www.realestate-charlotte.com/Mortgage_Companies/page_175231.html&ei=BCGOU-i-EvSssAS4_4BQ&bvm=bv.68191837,d.b2k&psig=AFQjCNFHcMuJ_MOS5dygosX65VMu-YYjbQ&ust=1401909835269671



Step 3. (Optional)


Modeling programs

MapSheds (GWLF)- PSU www.mapshed.psu.edu/

Chesapeake Assessment and Scenario Tool (CAST)- CBP www.casttool.org

Others Watershed Treatment Model

http://www.cwp.org/online-watershed-library/ See CBF webcast on modeling

http://www.mapshed.psu.edu/

http://www.casttool.org/

http://www.cwp.org/online-watershed-library/




Data requirements

• Minimum

– BMP type and acres treated (or area for land-use change BMPs)

• Better

– BMP type, acres treated and % impervious

• Best

– BMP type, acres treated, % impervious, land use type, and amount of runoff retention (i.e. 1”, 2.5”, etc.)

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Step 3. (Optional)



Summary of Reported BMPs Installed from 2007-2014

BMP Type Impervious Drainage Area (Acres)

Pervious Drainage Area (Acres)

Acres Linear Feet

Stream Restoration

0 0 0 5,000

Forest Buffer 0 0 5.00

Wet Pond/Wetland

40 50 0 0


Step 3. (Optional)






(CBPRP)

Four Steps:

1. Narrative of MS4

2. Incorporate green infrastructure into municipal

infrastructure upgrades




Step 4. Identify TMDL Control Measures

Identify TMDL control measures and include:

1. Location of BMPs (latitude/longitude, street name, other)

2. Implementation schedule including interim milestones

3. BMP pollutant reduction for N, P and/or Sediment

4. Rationale for selecting the BMP

5. BMP Inspection, operation and maintenance


Location of BMPs

Existing Resources:

Watershed plans,

stream assessments,

etc.

Conduct Field

Assessments:

opportunities at

public lands, public

sites needing upgrade


TMDL Control Measures1. Establish and Protect Riparian Forest Buffers – restore vegetated buffer

areas2. Disconnection Program – Disconnect impervious areas from your regulated

small MS4 system3. Tree Planting – Plant trees within the area that drains to the regulated small

MS4.4. Construct Recharge / Infiltration Facilities5. Stormwater Basin Retrofits – Naturalize or modify for extended detention,

and/or modify basins for increased infiltration6. Restore Stream banks – Restore and/or stabilize degraded and eroded stream

banks7. Establish Green Infrastructure at Facilities that are owned by the

municipality and that drain to the regulated small MS48. Develop and implement additional provisions to address TMDLs or a

separate MS4 TMDL Stormwater Management Ordinance9. Participate in an approved Trading and Offset Program


Location of BMPs


Project ID

Jurisdiction/Party Project Name

Project Type Latitude Longitude

1 City of Yellow Main Street Greenway Bioretention 39.966512 -76.719948

2 East Township Baseball Fields Bioretention 40.013022 -76.593407

3 Main TownshipMain Township Municipal Complex Bioretention 40.021230 -76.752979

4West Main Township Summer Park Bioretention 39.968734 -76.801098

5 Hamish Township Broad Street Bioswale 40.029241 -76.615090

6Spring Valley Township Michigan Ave Pond Retrofit 39.942421 -76.727789


Location of BMPs

Project ID Jurisdiction/Party Project Name Project TypeRepresented As Type Latitude Longitude

1City of York Broad Street Greenway Bioretention Bioretention 39.966512 -76.719948

2Hellam Township Barshinger Fields Bioretention Bioretention 40.013022 -76.593407

3Manchester TownshipManchester Township Municipal Complex Bioretention Bioretention 40.021230 -76.752979

4West Manchester Township Sunset Park Bioretention Bioretention 39.968734 -76.801098

5Hellam Township Ore Bank & Spring Rd Bioswale Bioswale 40.029241 -76.615090

6Spring Garden Township Virginia Ave Step Pool Conveyance Bioswale 39.942421 -76.727789

7York Township MD & PA CG trail extension Bioswale Bioswale

8City of York Rail Trail (Market-Kings Mill) Porous Pavement Pervious Pavement 39.945070 -76.742459

9Fairview Township Pinetown Road-Bike/Ped area Pervious Pavement Pervious Pavement

10York Township Mill Creek Preserve- Parking Lot Porous Pavement Pervious Pavement 39.945222 -76.661865

11York Township York Township Park- Parking Lot/Trail porous Pavement Pervious Pavement 39.922073 -76.679483

12City of York York City Industrial Park Pond Retrofit Pond Retrofit 39.983600 -76.750500

13Dover Township Wyngate Basin Pond Retrofit Pond Retrofit 39.983333 -76.839722

14Dover Township Dover Township Community CenterPond Retrofit Pond Retrofit 39.979444 -76.837500

15Fairview Township Emily Lane Stormwater Pond Pond Retrofit Pond Retrofit 40.18 -76.84

16Hellam Township 102 Chelsea Way Pond Retrofit Pond Retrofit 40.025035 -76.626763

17Manchester Township I-83 Basin Pond Retrofit Pond Retrofit 40.040252 -76.746611

18Shrewsbury Township Deer Creek Initiative- Grace Church Pond Retrofit #1 Pond Retrofit 39.766448 -76.667039

19Shrewsbury Township Deer Creek Initiative- Grace Church Pond Retrofit #2 Pond Retrofit 39.770254 -76.668628

20Shrewsbury Township Deer Creek Initiative- Giant Food Pond Retrofit #3 Pond Retrofit 39.772058 -76.668946


Calculate Pollutant Load Reduction

Determine Land Use Load rate from CAST or MapSheds

Calculated using % pollutant load reduction % from CAST

Model for N, P and TSS

Stream restoration and street sweeping pollutant load

reductions from Bay Program and expert panels

PA BMP manual currently being updated

Local data on stream restoration

Optional- Calculated planning level cost data for each BMP

(King and Hagan, 2011)


Land-use Loading Rate

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Land-Use Loading for TN

Landuse Acres

Lbs Nitrogen Lbs/ac TN Lbs Nitrogen Lbs/ac TN

Edge of Stream EOS Delivered DEL

regulated impervious developed

26,092.10 814,582.10 31.22 572,854.00 21.96

regulated pervious developed

78,853.40 1,565,997.20 19.86 1,070,388.00 13.57

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For spreadsheet use Edge of Stream


Example for TNBioretention (B soils w/ underdrain) at School Parking Lot

• Treats 1.2 acres (75% impervious)

– (0.75) * 1.2 ac = 0.9 acres impervious and 0.3 acres pervious

• 0.9 ac * 31.22 lbs/ac TN = 28.09 lbs/yr

• 0.3ac * 19.86 lbs/ac TN = 5.96 lbs/yr

• Total TN load to BMP = 34.05 lbs/yr

– BMP reduction efficiency for TN= 70%

• 34.05 lbs TN *0.70= 23.84 lbs/yr reduction in TN

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Example Pollutant Load Reduction Spreadsheet

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Proj ID Name Location Proj Type Amount Unit TN RedLbs/yr

TP RedLbs/yr

TSS RedLbs/yr

$/est.(optional)

1 Little Big Run Lat/Long Stream Restoration

1200 Feet 359 122 970000 $250,000

2 Smart Kids Elementary School

Street Address

Bioretention

1.5 Acres Treated

175 95 130000 $34,000

3 MunicipalBuilding

StreetAddress

PondRetrofit

7.5 Acres Treated

292 175 9000 $50,000

4 TownshipPark

Lat/Long ForestBuffer

4 acres 94 27 1200 $4,500


Pollutant Load Reduction Summary

Compare current loads (step 3) to projected load reduction

from planned BMPs (step 4) to show progress (% reduction)

TN TP TSS

Current Load (includes voluntary and redevelopment projects)

A lbs/yr

Future planned projects B

Percent Reduction B x100A


Matching Load Reductions with WIP II Goals

• Development of WIP II goals– Developed using Chesapeake Bay Model/CAST tool

• One advantage to using CAST– GWLF (MapSheds) may have been used to develop local TMDL

– Goals often reflect delivered loads– CAST tool provides Edge of Stream and Delivered Loads– To estimate Delivered loads in CAST

• Aggregate each practice type• Enter data• Run Model


BMP Type Impervious Drainage Area (Acres)

Pervious Drainage Area (Acres)

Acres Linear Feet

Stream Restoration

0 0 0 2,000

Forest Buffer 0 0 5.00

Infiltration w/sand

20 5 0 0



Project Implementation Schedule

Near Term Projects – little to no permits or permits in process,

ownership public or private with cooperating landowner, some

partial funding or design

Mid Term Projects – public ownership, limited permits

Long Term Projects- longer permit requirements, ownership

issues


Appendix

Description of Inspection, Operation, and Maintenance of BMPs. For most standard BMPs this information can easily be

found in state stormwater manuals. Proprietary BMPs should have information from vendor.

Include information on rationale for selecting BMP especially if not one of the TMDL control measures or experimental.


Next Steps

Track BMP project implementation Refine pollutant load reduction Continue to evaluate planned public municipal infrastructure

upgrades Show incremental progress- project location, when

constructed, etc.


Next Steps

Track BMP project implementation Refine pollutant load reduction Continue to evaluate planned public municipal infrastructure

upgrades Show incremental progress- project location, when

constructed, etc.

Questions?

[email protected]

Documents

Chesapeake Bay Pollution Reduction Plan › document-library › presentation...Chesapeake Bay Foundation ... Presentation Overview Introduce the Chesapeake Bay Pollution Reduction