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 [email protected]
Vladi Royzman Director, Information Technology and Geospatial ServicesTetra Tech Inc.703.385.6000 x333 [email protected]
Marty Hurd Project Manager, Information Technology and Geospatial ServicesTetra Tech Inc.703.385.6000 [email protected]