Anne Arundel County Anne Arundel County

MACo Winter ConferenceMACo Winter ConferenceJanuary 7, 2011January 7, 2011

22

NitrogenNitrogen

PhosphorusPhosphorus

SedimentSediment

Chesapeake Bay TMDLChesapeake Bay TMDLPollutants of ConcernPollutants of Concern

33

TMDL Allocation and Gap DeterminationTMDL Allocation and Gap Determination

Credit for existing Credit for existing BMPs + RetrofitsBMPs + Retrofits

Bay TMDL AllocationBay TMDL Allocation

E3 (Limit of Technology)E3 (Limit of Technology)

Required ReductionRequired Reduction

20092009 20252025

Current ConditionsCurrent Conditions2009 Progress2009 Progress

GapGap

Existing Conditions Without BMP’sExisting Conditions Without BMP’s

Pollu

tant

Loa

dPo

lluta

nt L

oad

Redu

cibl

e Lo

adRe

duci

ble

Load

44

Total Nitrogen = 2.460 million lbs/yrTotal Nitrogen = 2.460 million lbs/yr

Total Phosphorus = 0.151 million lbs/yrTotal Phosphorus = 0.151 million lbs/yr

Sediment = TBDSediment = TBD

Anne Arundel CountyAnne Arundel CountyChesapeake Bay TMDL AllocationChesapeake Bay TMDL Allocation

55

Wastewater Treatment Plants (WWTPs)Wastewater Treatment Plants (WWTPs)

Septic SystemsSeptic Systems

Stormwater RunoffStormwater Runoff

AgricultureAgriculture

Pollutant Source SectorsPollutant Source Sectors

66

Actors Where County Assumes ResponsibilityActors Where County Assumes Responsibility

County WWTPsCounty WWTPs

Privately Owned Septic SystemsPrivately Owned Septic Systems

County Stormwater RunoffCounty Stormwater Runoff

Actors Where County Does Not Assume ResponsibilityActors Where County Does Not Assume Responsibility

Minor Municipal WWTPsMinor Municipal WWTPs

Minor Industrial WWTPsMinor Industrial WWTPs

Major Industrial WWTPsMajor Industrial WWTPs

Fort Meade WWTPFort Meade WWTP

Federal Lands – Stormwater RunoffFederal Lands – Stormwater Runoff

State Lands – Stormwater RunoffState Lands – Stormwater Runoff

City of Annapolis – Stormwater RunoffCity of Annapolis – Stormwater Runoff

Agricultural Lands – Stormwater RunoffAgricultural Lands – Stormwater Runoff

Pollutant Source Sector ActorsPollutant Source Sector Actors

77

(1) WWTPs(1) WWTPs

Upgrading WWTPs to Enhanced Nitrogen Removal CapacityUpgrading WWTPs to Enhanced Nitrogen Removal Capacity

(2) Septic Systems(2) Septic Systems

Sanitary Sewer Extensions and Satellite Cluster SystemsSanitary Sewer Extensions and Satellite Cluster Systems

(3) Stormwater Retrofits(3) Stormwater Retrofits

Stormwater Outfall RestorationStormwater Outfall Restoration

Stormwater Pond RestorationStormwater Pond Restoration

(4) Headwater Stream Erosion Prevention(4) Headwater Stream Erosion Prevention

Stream Channel RestorationStream Channel Restoration

Ephemeral Channel RestorationEphemeral Channel Restoration

Anne Arundel County Core Anne Arundel County Core Implementation StrategyImplementation Strategy

88

County Government WWTPs (County Government WWTPs (≈ ≈

$270,000,000)$270,000,000)

Federal Government WWTPsFederal Government WWTPs

Private Sector WWTPsPrivate Sector WWTPs

Point Source WWTP ParticipantsPoint Source WWTP Participants

99

County Sanitary Sewer Extensions and County Sanitary Sewer Extensions and

Satellite Cluster Systems (Satellite Cluster Systems (≈ ≈ $800,000,000)$800,000,000)

Private Sector Septic SystemsPrivate Sector Septic Systems

Septic System ParticipantsSeptic System Participants

1010

County Government (County Government (≈≈ $400,000,000) $400,000,000)

State GovernmentState Government

Federal GovernmentFederal Government

City GovernmentCity Government

AgricultureAgriculture

Privately Owned LandPrivately Owned Land

Stormwater Retrofit ParticipantsStormwater Retrofit Participants

1111

County Government (County Government (≈≈ $400,000,000) $400,000,000)

State GovernmentState Government

Federal GovernmentFederal Government

City GovernmentCity Government

AgricultureAgriculture

Private SectorPrivate Sector

Headwater Stream Erosion Headwater Stream Erosion Prevention ParticipantsPrevention Participants

1212

Degraded Stream ConditionsDegraded Stream Conditions

1313

Restored Stream StabilityRestored Stream Stability Restored Hydrology within Restored Hydrology within

Floodplains and StreamsFloodplains and Streams Restored Biological Health of Restored Biological Health of

StreamsStreams Compliance with Water Quality Compliance with Water Quality

StandardsStandards

Ultimate GoalsUltimate Goals

14141414

Step Pool Stormwater Conveyance (SPSC) Step Pool Stormwater Conveyance (SPSC)

Restoration StrategyRestoration Strategy

1515

County WWTPs (County WWTPs (≈≈ $270,000,000) $270,000,000)

Sanitary Sewer Extensions and Satellite Sanitary Sewer Extensions and Satellite

Cluster Systems (Cluster Systems (≈ ≈ $800,000,000)$800,000,000)

Stormwater Retrofits (Stormwater Retrofits (≈≈ $400,000,000) $400,000,000)

Headwater Stream Erosion Prevention Headwater Stream Erosion Prevention

( (≈≈ $400,000,000) $400,000,000)

TOTAL ESTIMATED COST: $1.87 BillionTOTAL ESTIMATED COST: $1.87 Billion

What is the Potential Cost to Anne What is the Potential Cost to Anne Arundel County?Arundel County?