Purpose and Background• The Cecil County Northeast Advanced Wastewater Treatment

Plant (NEAWWTP) will need to be expanded to support anticipated growth associated with the APG – BRAC development

• The NEAWWTP permitted capacity is capped at 2.67 MGD at an average Total Nitrogen (TN) concentration of 3.0 mg/l, or approximately 24,500 pound TN annually

• On April 26, 2008 MDE adopted the “Maryland Policy for Nutrient Cap Management and Trading in Maryland’s Chesapeake Bay Watershed” to provide guidance to offset increased discharges and nutrient loads through nutrient credits

• Cecil County wishes to pursue all practical opportunities for nutrient credits for use at the NEAWWTP

Project Scope and Goals• OEA-CSSC Project 9 – Cecil County Wastewater Treatment

Capacity Analysis is intended to develop a plan to obtain nutrient load credits for the expansion of the NEAWWTP from 2.0 MGD to 5.0 MGD

• Identify projects for nutrient credits using the “Maryland Policy for Nutrient Cap Management and Trading in Maryland’s Chesapeake Bay Watershed,” including– Delineate service area boundaries and estimate flow

capacities– Develop preliminary layouts of wastewater collection

systems including alternative studies where feasible– Develop plans and exhibits for selected projects– Develop estimates of probable construction cost– Provide data for MDE approval of nutrient load credits

• Recommend a plan of action

Project IdentificationCredit Opportunity

Existing Significant WWTP’s

Project IdentificationCredit Opportunity

Existing Minor WWTP’s

Project IdentificationCredit Opportunity

On-site Sewage Disposal Systems

Project IdentificationCredit Opportunity

Community Residential OSDS

Project IdentificationCredit Opportunity

Schools and Commercial OSDS

Treatment Regions

Projects By Area

Project DevelopmentZoning and Comprehensive Plan

Project DevelopmentTown of Port Deposit Project

Total Credits = 1.148MGD

Total Cost = $66.7M

Per Credit = $3,000 / credit

Project DevelopmentTown of Port Deposit Project

Total Cost = $14.3M

Total Credits = 0.525MGD

Project Ranking

• Each project was ranked for:– Cost– Credit Opportunity– Ease of Implementation

• A project list was developed prioritized by ranking and showing a cumulative total of proposed credits

Other Credit Opportunities

• Individual OSDS connected to existing sewer• Transfer of development rights• Stormwater management upgrades• Protected lands• Water reuse• Land application of effluent• Trading with municipalities outside of the

County

Recommended Plan of ActionPriority Project Project Credit

(MGD)Cumulative Credit

(MGD)

1 Carpenters Point 0.43 0.43

2 Port Deposit 1.62 2.05

3 Crystal Beach 0.67 2.72

4 Red Point 0.11 2.83

5 Holloway Beach 0.07 2.90

6 Hances Point 0.31 3.21

7 Piney Ridge 0.01 3.22

8 W. Old Philadelphia Rd.

0.05 3.27

9 Bethel Church Rd. 0.01 3.28