Chesapeake Bay Total Maximum Daily Load (TMDL) Tracking

Thursday, May 31, 2012

Martin Hurd , Vladislav Royzman, Tetra Tech, Inc. Brian Burch, Megan Thynge, US EPA

Agenda

Background BayTAS Overview NEIEN Flow Implementation Conclusions & Lessons Learned

Background - Clean Water Act

Background - What is a TMDL?

Waste Load Allocations for point sources

Load Allocations for nonpoint sources

Reserve capacity sets aside allocation for future development

Margin of Safety allocation accounts for uncertainty

Background - Setting TMDL Milestones and Determining Progress

States propose pollution reduction milestones to measure success in their Watershed Implementation Plans (WIPs)

PA 2009 commitment for 2012 milestones

Background - BayTAS

What is it? Bay Tracking & Accounting System Released January 28, 2011

Why Developed? Required by Executive Order 13508, “Strategy for Protecting and

Restoring the Chesapeake Bay Watershed” - May 12 2010 CBF Settlement Agreement “Begin” to use the system by Jan 31, 2011

What does it Track? TMDL allocations and reserves Tracks facility loads Annual progress and milestones

BayTAS Overview - Tracking

Tracks TMDLs for 92 Segments for: State, Basin, Segment, Sector

and Facility Includes 5.3.0 and 5.3.2 model

version data for delivered and edge of stream

Tracks WLAs for NPDES Point Sources and LAs for Non-Point Sources/Sectors

Stores TMDL Progress and model runs

BayTAS Overview - Tracking

Data tracked for non-significant and significant facilities

Details include allocations, DMR data and whether meeting WLA

BayTAS Overview - Reporting

GIS data viewer for viewing facility and allocation information

Web Services provide data to BayTAS public site on CSTAT

Excel / Word Management Report

Excel Data Extracts Live Reports for NEIEN

submissions

NEIEN BMP Exchange

Trading Partner Agreement (CBPO & Jurisdictions) signed in 2004 and $390K grant.

Goal to exchange BMP Implementation data by Dec 2010.

Best Management Practices (BMPs) are provided by jurisdictions and used as inputs to the suite of Bay Models

Results in nonpoint source loadings for given scenario

Submission reports are published in BayTAS

NEIEN Flow Implementation

Created common exchange of BMP projects for agricultural, stormwater, and urban BMPs.

Leveraged the existing production BayTAS application User management, admin functions, automated report publication for

stakeholders. Data from the exchange is consumed and processed for input into the Bay

Model, using BayTAS/node functions, to determine load reductions and progress

NEIEN Flow Implementation

Schema verification Software & database development Data content inventory Data conversion & standardization Reporting

NEIEN Flow Implementation Coordinator

documents conversion

rules

Rules are loaded

directly into system

NEIEN Data is supplied and

rules are applied

Feedback & Review reports

available online

Jurisdictions supply practice details

Start

NEIEN Flow Implementation - Data

Practice: Fencing

Measures:Area FencedBuffer AreaArea ProtectedLength FencedStream Bank LengthAverage Buffer WidthPractice Design LifespanCost Per Acre

Other Practices:Access ControlStream ProtectionStream Exclusion With Grazing Land Management

CBPO Practice:Pasture Fencing

Practice Design LifespanCost Per Acre X

NEIEN Flow Implementation – How it really works

Rules identify Unit type (& unit conversions) Priority of use Target practice in SB / WSM Conversion factors (mathematical

operators & constants) Stored procedure associated with

record Scenario Builder input file type Status & Comments

NEIEN Flow Implementation

State partners communicate requests to Admin & submit data Admin updates system rules table & kicks off progress run Data converted processed to Scenario Builder & validation reports for state

partners

NEIEN Flow Implementation

Live Reports – what is in the node database

Validation against SB Requirements: Summarized numbers Status – reason why Link to details, individual

records for the summary row

Diagnostic information for Admin - SP associated with conversion rules.

NEIEN Flow Implementation – Benefits and Lessons Learned.

Continuous Improvement

BayTAS Future Next Steps and Ongoing Efforts

Implementation of planning targets2-year milestone load reductions

Programmatic milestonesBMP Implementation Verification Tracking Trading and Offset TransactionsPermit Compliance SchedulesSchema Update and Maintenance

BayTAS Future Next Steps and Ongoing Efforts (Continued)

Waste Water Data EnhancementData acquisition/loading from state partnersData QA/QC functionalityData handling calculations for missing valuesRange checksParent & Component species summationsChain of Custody reporting for confirmationConsolidated source for CBPO applications

Thank You and Q&A

Megan ThyngeDeputy Data Center ManagerChesapeake Bay Program Office410.267.5786thynge.megan@epa.gov

Vladi Royzman Director, Information Technology and Geospatial ServicesTetra Tech Inc.703.385.6000 x333 vladislav.royzman@tetratech.com

Marty Hurd Project Manager, Information Technology and Geospatial ServicesTetra Tech Inc.703.385.6000 x331martin.hurd@tetratech.com