Maryland’s Final 2012 Integrated Report of Surface

Submitted in Accordance with Sections 303(d), 305(b), and 314 of the Clean Water Act

Maryland Dept. of the Environment 1800 Washington Blvd , MD 21230

Martin O’Malley, Governor Dr. Robert Summers, Secretary Anthony G. Brown, Lt. Governor Kathy M. Kinsey, Deputy Secretary David A. Costello, Deputy Secretary

Submittal Date: July 23, 2012 EPA Approval Date: November 9, 2012 ACKNOWLEDGEMENTS

This report, developed by the Environmental Assessment and Standards Program (EASP) of the Maryland Department of the Environment (MDE) would not have been possible without the contributions from countless others. Much of the data collected by EASP was supplied by other Science Services Administration programs including: Field Services, TMDL Technical Development, and Water Quality Protection and Restoration Programs. In addition, special thanks go to Maryland Department of Natural Resources staff that not only supplied large amounts of data but also assisted with water quality assessments.

Finally, EASP would like to thank all those who provided data for this report. To view a full list of individuals and organizations that provided data during the data solicitation period please see Table 3.

FINAL 2 TABLE OF CONTENTS

LIST OF FIGURES ...... 5 LIST OF TABLES...... 6 EXECUTIVE SUMMARY ...... 8 PREFACE...... 12 PART A: INTRODUCTION ...... 13 A.1 Data Sources and Minimum Requirements ...... 13 A.1.1 Quality Control of Water Quality Datasets...... 16 A.1.2 Water Quality Data Review...... 17 PART B: BACKGROUND ...... 19 B.1 Total Waters ...... 19 B.1.1 Water Quality Standards ...... 19 B.2 Water Pollution Control Programs...... 23 B.2.1 Permits...... 23 B.2.2 Tier II Waters and Antidegradation ...... 23 B.2.3 Grant Programs ...... 23 B.2.4 Total Maximum Daily Loads (TMDLs)...... 23 B.2.5 Drinking Water Supply and Protection ...... 24 B.2.6 Targeted Watershed ...... 24 B.2.7 Program Coordination...... 24 B.3 Cost/Benefit Assessment...... 24 B.3.1 Program costs ...... 25 B.3.2 Program Benefits...... 27 B.3.3 Summary ...... 28 B.4 Special State Concerns and Recommendations ...... 28 PART C: SURFACE WATER MONITORING AND ASSESSMENT ...... 30 C.1 Monitoring Program...... 30 C.2 Assessment Methodologies...... 30 C.2.1 Assessment Methodology for Identifying Waters Impaired by Bacteria in Maryland’s Integrated Report ...... 31 C.2.2 Biological Assessment Methodology and the Biological Stressor Identification Process ...... 35 C.3 Assessment Results ...... 39 C.3.1 Total Maximum Daily Loads (TMDL) ...... 50 C.3.2 Assessment Summary ...... 76 C.3.3 Split and Aggregated Water Body Segments...... 76 C.3.4 Estuarine Assessments ...... 77 C.3.5 Lakes Assessment - Clean Water Act §314 (Clean Lakes) Report...... 82 C.3.6 Non-tidal Rivers and Streams Assessment...... 89 C.4 Wetlands Program...... 93 C.5 Trend Monitoring ...... 94 C.6 Public Health Issues ...... 95 C.6.1 Waterborne Disease...... 95 C.6.2 Drinking Water...... 96 C.6.3 Shellfish Harvesting Area Closures ...... 96

FINAL 3 C.6.4 Toxic Contaminants Fish Consumption Advisories...... 97 C.6.5 Harmful Algal Blooms...... 98 C.6.6 Bathing Beach Closures ...... 99 C.7 Invasive aquatic species ...... 99 PART D: GROUND WATER MONITORING AND ASSESSMENT...... 102 PART E: PUBLIC PARTICIPATION ...... 104 E.1 Informational Public Meeting Announcement ...... 105 E.2 Attendance Lists from Informational Public Meetings ...... 106 E.3 Comment-Response for the 2012 Integrated Report...... 109 PART F: THE 2012 INTEGRATED REPORT...... 126 F.1 Report Format and Structure ...... 126 F.2 Category 2 Waters ...... 128 F.3 Category 3 Waters ...... 129 F.4 Category 4a Waters...... 130 F.5 Category 4b Waters ...... 131 F.6 Category 4c Waters...... 132 F.7 Category 5 Waters ...... 133 F.8 Assessments that were Modified During the Public Comment Period...... 134 REFERENCES ...... 135

FINAL 4 LIST OF FIGURES

Figure 1: Comparison of the Number of Category 5 (impaired, TMDL not yet complete) Listings Between the 2010 and 2012 Integrated Reporting Cycles per Pollutant Group...... 10 Figure 2: Illustration of the designated uses for (Chesapeake Bay Program, 1998). Uses are both overlapping and three-dimensional...... 22 Figure 3: Federal Budget Appropriations to Water Programs (2004-2011). (Source: Association of Clean Water Administrators FY2012 Funding Chart)...... 26 Figure 4: Federal nonpoint source total budget allocation including the Maryland totals. (Sources: Association of Clean Water Administrators FY2012 Report and MDE’s 319 Annual Report) ...... 27 Figure 5: Report Format...... 127

FINAL 5 LIST OF TABLES

Table 1: Category 5 Listing Status from 2010 to 2012...... 9 Table 2: 2012 Delistings (water body-pollutant combinations removed from Category 5 (impaired status)...... 10 Table 3: Organizations/Programs that submitted water quality data for consideration in the 2012 IR...... 14 Table 4: Scope of Maryland’s Surface Waters...... 19 Table 5: Specific Designated Uses that apply to each Use Class...... 20 Table 6: New Category 4c (impaired, pollution not caused by a conventional pollutant) Assessments on the 2012 IR...... 36 Table 7: New Category 5 (impaired, may need a TMDL) Listings on the 2012 IR...... 39 Table 8: Summary of combined sewer overflows (CSO) that occurred 3 or more times over the past 5 years...... 41 Table 9: Summary of sanitary sewer overflows (SSO) that occurred 3 or more times over the past 5 years resulting fromteh same facility or occurring within the same jurisdiction...... 41 Table 10: New Delistings for 2012 (removed from Category 5)...... 43 Table 11: Key for the last column in Table 10...... 46 Table 12: Watersheds listed previously as biologically impaired that have now had a BSID analysis completed. Some of these were addressed during the 2012 IR...... 46 Table 13: Category 4b Listings removed from the 2012 IR...... 49 Table 14: Recently Approved TMDLs in Category 4a of the IR. This list includes Chesapeake Bay segment TMDLs. This list does not include any TMDLs that were captured on the 2010 IR...... 50 Table 15: Anticipated Submissions to Address Category 5 Integrated Report Listings in FFY 2012...... 74 Table 16: Anticipated Submissions to Address Category 5 Integrated Report Listings in FFY 2013...... 75 Table 17: Size of Surface Water Assigned to Reporting Categories...... 76 Table 18: Summary of Newly Split Assessment Units in the 2012 IR...... 77 Table 19: Summary of Newly Aggregated Assessment Units in the 2012 IR...... 77 Table 20: Size of Estuarine Waters per Category According to Pollutant...... 78 Table 21: Size of Estuarine Waters in Linear Distance per Category According to Pollutant...... 78 Table 22: Designated Use Support Summary for Maryland's Estuarine Waters...... 79 Table 23: Size of Estuarine Waters Impaired by Various Sources...... 79 Table 24: Attainment Results for the Chesapeake Bay Calculated Using a Probabilistic Monitoring Design...... 80 Table 25: Trophic status of Maryland's significant, publicly-owned lakes...... 83 Table 26: Trophic Status Summary of Maryland's significant, publicly-owned lakes.... 84 Table 27: Designated use support summary for Maryland's lakes and (acres), 2012...... 86 Table 28: Size of Impoundments per Category According to Pollutant...... 87 Table 29: The total size of impoundments impaired by various sources, 2012...... 88

FINAL 6 Table 30: Statewide results for the MBSS Program...... 90 Table 31: Extent of River/Stream Miles per Category According to Pollutant...... 90 Table 32: Designated Use Support Summary for Non-tidal Rivers and Streams...... 92 Table 33: Summary of Sizes of Riverine Waters Impaired by Various Sources...... 92 Table 34: List of Commentors...... 109 Table 35: pH Impairments in the Upper North Branch <