City of Richmond, Virginia Chesapeake Bay TMDL Action Plan Permit No. VAR040005 2013-2018 Department of Public Utilities Chesapeake Bay TMDL Action Plan Permit No. VAR040005 2013-2018 Department of Public Utilities, Richmond, Virginia September 2015 City of Richmond Chesapeake Bay TMDL Action Plan Table of Contents Table of Contents List of Figures .............................................................................................................................................. iii List of Tables ............................................................................................................................................... iv List of Abbreviations .................................................................................................................................... v Executive Summary .................................................................................................................................... vi 1. Introduction .......................................................................................................................................1-1 2. Legal Authority for TMDL Implementation .......................................................................................2-1 2.1 Current Program and Existing Legal Authority ......................................................................2-1 2.2 New or Modified Legal Authority ............................................................................................2-1 2.3 Means and Methods to Address Discharges from New Sources ........................................2-1 3. POC Loads and Required Reductions ..............................................................................................3-1 3.1 Definition of the MS4 Service Area........................................................................................3-1 3.1.1 City of Richmond Boundary......................................................................................3-2 3.1.2 2000 US Census Urban Areas .................................................................................3-2 3.1.3 Combined Sewer System .........................................................................................3-2 3.1.4 VPDES Permittees ....................................................................................................3-2 3.1.5 Other MS4 Permittees .............................................................................................3-4 3.1.6 Forested Lands and Wetlands .................................................................................3-5 3.1.7 Agricultural Lands .....................................................................................................3-6 3.1.8 James River and Open Waters ................................................................................3-6 3.1.9 Stormwater Runoff between Jurisdictions ..............................................................3-6 3.1.10 Delineation of the Final MS4 Service Area .............................................................3-7 3.2 Estimated Existing Source Loads...........................................................................................3-8 3.2.1 2009 Pervious and Impervious Land Cover ...........................................................3-8 3.2.2 Annual POC Load Calculations – Existing Sources as of 2009 .......................... 3-10 3.3 Calculated Pollutant of Concern Required Reductions ..................................................... 3-11 3.4 Additional Source Loads and Required Reductions .......................................................... 3-12 3.4.1 Means and Methods to Offset Increased Loads from New Sources Initiating Construction between July 1, 2009 and June 30, 2014 ................................... 3-12 3.4.2 Means and Methods to Offset Increased Loads from Grandfathered Projects that Begin Construction after July 1, 2014 ................................................................ 3-14 3.5 Total First Permit Term Required Reductions .................................................................... 3-15 4. Means and Methods to Meet Required Reductions and Schedule ...............................................4-1 4.1 Historical BMP Data ................................................................................................................4-1 4.2 Pollutant Reduction Project Types .........................................................................................4-1 4.3 Projects for Pollutant Removal Credit....................................................................................4-1 4.3.1 Reedy Creek Stream Restoration ............................................................................4-2 ii Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan 5. 6. 7. 8. Table of Contents 4.3.2 Rattlesnake Creek Stream Restoration ..................................................................4-3 4.3.3 Albro Creek Stream Restoration ..............................................................................4-4 4.3.4 Pocosham Creek Stream Restoration .....................................................................4-5 4.3.5 Maury Cemetery Stream Restoration ......................................................................4-7 4.3.6 First Permit Term Pollutant Reduction Credit .........................................................4-8 4.3.7 Other Water Quality Projects in Planning or Implementation ................................4-9 4.4 Implementation Schedule and Estimated Cost to Complete ...............................................4-9 4.5 A List of Future Projects and Associated Acreage that Qualify as Grandfathered ..............4-9 Public Comments on Draft Action Plan ............................................................................................5-1 Conclusion .........................................................................................................................................6-1 Limitations .........................................................................................................................................7-1 References ........................................................................................................................................8-1 Appendix A: Maps.......................................................................................................................................A-1 Appendix B: Source Data…………………………………………………………………………………………………………....B-1 Appendix C: List of Existing Legal Authority..............................................................................................C-1 Appendix D: BMPs Constructed Between June 30, 2009 and July 1, 2014……………………………….…..D-1 Appendix E: Modifications to the Plan ......................................................................................................E-1 List of Figures Figure ES-1. City of Richmond MS4 service area ......................................................................................vii Figure ES-2. Current condition of Pocosham Creek (dated October 2013) ............................................. x Figure ES-3. Current condition of Maury Cemetery Creek (dated December 2013) ...............................xi Figure 1-1. Richmond and the extents of the James River Basin. .........................................................1-1 Figure 3-1. VPDES Permits within the City ...............................................................................................3-4 Figure 3-2. VDOT ROW within the City......................................................................................................3-5 Figure 3-3. Forested land within the City .................................................................................................3-6 Figure 3-4. Impervious areas within the MS4 service area ....................................................................3-8 Figure 4-1. Approximate location of Reedy Creek stream restoration ...................................................4-2 Figure4-2. Approximate location of the Rattlesnake Creek stream restoration....................................4-3 Figure 4-3. Approximate location of the Albro Creek stream restoration ..............................................4-5 Figure 4-4. Approximate location of the Pocosham Creek stream restoration .....................................4-6 Figure 4-5. Approximate location of the Maury Cemetery Creek stream restoration ...........................4-7 Figure 1: MS4 Service Area Delineation ..................................................................................................... 2 Figure 2: First Permit Term Projects ........................................................................................................... 2 iii Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Table of Contents List of Tables Table ES-1 Overview of the Chesapeake Bay TMDL Action Plan Document Requirements................... vi Table ES-2. Areas of Inclusion and Exclusion from the MS4 Service Area ............................................viii Table ES-3. Existing Source Loads for the James River Basin ...............................................................viii Table ES-4. Total Reductions Required During First Permit Cycle ............................................................ix Table ES-5. First Permit Term Pollutant Reduction Credits ...................................................................... xii Table ES-6. First Permit Term Pollutant Reduction Requirements and Second Permit Term Credit ...xii Table ES-7. First Permit Term Implementation Schedule and Estimated Cost to Complete ............... xiii Table 3-1. Individual VPDES Permittees ..................................................................................................3-2 Table 3-2. General VPDES Permittees .....................................................................................................3-3 Table 3-3. Other Municipal Separate Storm Sewer Systems .................................................................3-4 Table 3-4. Areas of Inclusion and Exclusion from the MS4 Service Area .............................................3-7 Table 3-5. MS4 Service Area Land Cover in 2009 and 2014 ................................................................3-9 Table 2-6. Surface Runoff into the MS4 from Other Jurisdictions ...................................................... 3-10 Table 3-7. Existing (2009) Source Loads for the James River Basin .................................................. 3-11 Table 3-8. Required POC Reduction Rates from Existing (2009) Sources for the James River Basin…………………………………………………………………………………………………………………………………3- 11 Table 3-9. First Permit Term Required Reductions from Existing (2009) Sources for the James River Basin ............................................................................................................................................... 3-12 Table 3-10. Post-Development Conditions July 1, 2014 ..................................................................... 3-13 Table 3-11. Total Load Changes from New Sources between June 30, 2009 and July 1, 2014 ..... 3-13 Table 3-12. Net Load Change (Total Load Change Minus Reductions from Implemented BMPs)... 3-14 Table 3-13. Additional Reductions Required During First Permit Cycle ............................................. 3-14 Table 3-14. Total Reductions Required During First Permit Cycle ...................................................... 3-15 Table 4-1: Pollutant Removal Calculations for Reedy Creek Stream Restoration ................................4-3 Table 4-2: Pollutant Removal Calculations for Rattlesnake Creek Stream Restoration ......................4-4 Table 4-3: Pollutant Removal Calculations for Albro Creek Stream Restoration ..................................4-5 Table 4-4: Pollutant Removal Calculations for Pocosham Creek Stream Restoration .........................4-6 Table 4-5: Pollutant Removal Calculations for Maury Cemetery Stream Restoration ..........................4-8 Table 4-6. First Permit Term Pollutant Reduction Credits .....................................................................4-8 Table 4-7. First Permit Term Pollutant Reduction Requirements and Second Permit Term Credit ...4-8 Table 4-8. First Permit Term Implementation Schedule and Estimated Cost to Complete ................ 4-9 Table D-1. BMPs Constructed between 7/1/2009 and 7/1/2014 (Filtered from 'City of Richmond SCM Database 10-1-14.xlsx') ............................................................................................................... 2 iv Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Table of Contents List of Abbreviations 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Ac acre(s) Ac-ft acre-foot(feet) BMP best management practice CIP Capital Improvement Plan City City of Richmond CSS combined sewer system DEQ Virginia Department of Environmental Quality DOF Virginia Department of Forestry EOS edge of stream FIA Forest Inventory and Analysis FWS Fish and Wildlife Service GIS geographic information system lb pound(s) lf linear foot/feet MS4 municipal separate storm sewer system NED National Elevation Dataset NLCD National Land Cover Dataset NWI National Wetlands Inventory 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 Plan Chesapeake Bay TMDL Action Plan POC pollutant of concern ROW right-of-way SLAF Stormwater Local Assistance Fund TMDL total maximum daily load TN total nitrogen TP total phosphorus TSS total suspended solids USFS United States Forest Service USGS United States Geological Survey VAG11 General VPDES Permit for Concrete Products Facilities VAG84 Nonmetallic Mineral Processing General Permit VAR05 General VPDES Permit for Stormwater Associated with an Industrial Activity VDOT Virginia Department of Transportation VPDES Virginia Pollutant Discharge Elimination System yr year(s) v Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Executive Summary Executive Summary The City of Richmond (City) has developed this first permit term Chesapeake Bay Total Maximum Daily Load (TMDL) Action Plan (Plan) as required in the 2013-2018 General Permit for Discharges of Stormwater from Small Municipal Separate Storm Sewer Systems (Permit Term II MS4 Permit) and in accordance with the Virginia Department of Environmental Quality (DEQ) Chesapeake Bay TMDL Action Plan Guidance Document (Guidance Document) dated May 18, 2015. This Plan required an evaluation of the 2009 MS4 boundary, calculation of the pollutant of concern (POC) loading and first permit term required reductions, projects to meet the reductions, a legal authority review of the City’s ordinances and other documents that allow the City to meet the requirements of the Plan, and a summary of the public comment process. Table ES-1 provides an overview of the Phase II MS4 Permit requirements and the corresponding section where the requirement is addressed. Table ES-1 Overview of the Chesapeake Bay TMDL Action Plan Document Requirements General Permit Section Description of Requirement Corresponding Section(s)/Appendix of this TMDL Action Plan Page Number(s) I.C.2.a.(1) Current program and existing legal authority Section 2.1 2-1 I.C.2.a.(2) New or modified legal authority Section 2.2 2-1 I.C.2.a.(3) Means and methods to address discharges from new sources Section 2.3 2-1 I.C.2.a.(4) Estimated existing source loads Section 3.2 3-8 I.C.2.a.(5) Calculated total pollutant of concern required reductions Section 3.3 3-11 I.C.2.a.(6) Means and Methods to meet the required reductions and schedule Sections 4.3 and 4.4 4-1 and 4-9 I.C.2.a.(7) Means and methods to offset increased loads from new sources initiating construction between July 1, 2009 and June 30, 2014 Means and methods to offset increased loads from grandfathered projects that begin construction after July 1, 2014 Sections 3.4.1 and 4.3 3-13 and 4-1 Section 3.4.2 3-15 I.C.2.a.(9) Modifications to the TMDL or watershed implementation plan Appendix D D-1 I.C.2.a.(10) A list of future projects and associated acreage that qualify as grandfathered An estimate of the expected cost to implement the necessary reductions Section 4.5 4-9 Section 4.4 4-9 Public comments on the draft action plan Section 5 5-1 I.C.2.a.(8) I.C.2.a.(11) I.C.2.a.(12) The 2009 MS4 service area was delineated with spatial data provided by the City, as well as datasets obtained from the US Census Bureau, DEQ, and US Geological Survey (USGS) National Elevation Dataset (NED). The list of datasets collected for this Plan is included in Appendix B. The service area is the City boundary, excluding the combined sewer system (CSS) service area, VPDES permittees and other MS4s, forested areas greater than half an acre, open water, and areas that drain by surface runoff out of the MS4 service area. The areas of direct surface runoff into the MS4 from other jurisdictions were delineated and added to the MS4 service area. Figure ES-1 shows the exclusion areas and the MS4 service area. Table ES-2 lists each exclusion type and the incremental change in the MS4 service area. vi Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Executive Summary Figure ES-1. City of Richmond MS4 service area vii Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Executive Summary Table ES-2. Areas of Inclusion and Exclusion from the MS4 Service Area Area Category Area (Ac) City of Richmond Boundary 40,011 Exclusion Areas CSS 10,618 VPDES permits and other MS4s (excluding VDOT) 1,043 VDOT Roads 597 Forested Lands and Wetlands 5,188 Agricultural Lands 0 Open Water 2,222 Surface Flow 483 Total Exclusion Area (Non-Overlapping)a 18,631 Total MS4 Service Area within the City Boundary 21,380 Inclusion Areas: Surface Inflow 22 Total Inclusion Area 22 Total MS4 Service Area 21,402 a. The total exclusion area is less than the sum of the individual exclusion areas because some of the individual exclusion areas overlap. The 2009 land cover characteristics were estimated from the current (2014) impervious land cover provided by the City in geographic information systems (GIS) files. The annual POC loads for existing development were calculated from the 2009 land cover using the edge of stream (EOS) loading rates provided in the Phase II MS4 Permit for the James River Basin, as shown in Table ES-3. Table ES-3. Existing Source Loads for the James River Basin Subsource Regulated Urban impervious Pollutant Total Nitrogen Regulated Urban Pervious Regulated Urban impervious Regulated Urban Pervious Regulated Urban impervious Regulated Urban Pervious Total Phosphorus Total Suspended Solids Total Existing Acres Served by MS4 (06/30/09) 2009 EOS Loading Rate (lb/Ac/yr) Estimated Total POC Load Based on 2009 Progress Run (lb/yr) 7,231.38 9.39 67,902.69 14,170.62 6.99 99,052.51 7,231.38 1.76 12,727.23 14,170.62 0.5 7,085.31 7,231.38 676.94 4,895,212.70 14,170.62 101.08 1,432,365.92 Estimated Total POC Load (lb/yr) 166,955.30 19,812.54 6,327,578.62 After the existing source loads were calculated, the first permit term progress of five percent was calculated for existing development and new sources initiating construction between July 1, 2009, and June 30, 2014 (Special Condition 7). viii Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Executive Summary The required reductions for new sources were calculated using the aggregate accounting method as described in Example II.2 of the Guidance Document dated May 18, 2015. The total first permit term required reductions are summarized in Table ES-4. The City does not anticipate the construction of any grandfathered projects (Special Condition 8) initiating construction after July 1, 2014. Table ES-4. Total Reductions Required During First Permit Cycle Pollutant Total Nitrogen Total Phosphorus Total Suspended Solids Grandfathered Projects (Special Condition 8) Required Reductions (lb/yr) 0 0 Total First Permit Term Required Reductions (lb/yr) 602.72 127.50 New Sources (Special Condition 7) Required Reductions (lb/yr) 15.51 8.95 55,218.73 4,041.69 0 59,260.42 Existing Development Required Reductions (lb/yr) 618.23 136.45 The City is currently operating a program to select and implement projects to achieve the required reductions for the current and future permit cycles. Five projects have been identified by the City for this Plan: Reedy Creek Stream Restoration Rattlesnake Creek Stream Restoration Albro (Goode’s) Creek Stream Restoration Pocosham Creek Stream Restoration Maury Cemetery Stream Restoration Reedy Creek Stream Restoration Reedy Creek is a tributary of the James River draining approximately 3,075 acres of urban and suburban lands in the southwestern portion of the City. The project will restore approximately 2,200 linear feet of the Reedy Creek and the downstream portion of an unnamed tributary. The land on which the project will be conducted is owned by the City and is administered by the Department of Parks, Recreation and Community Facilities. The two stream channels to be restored receive stormwater from a total of approximately 2,310 acres. The land cover of the contributing drainage area consists of seventeen percent forest and open space, forty-four percent managed turf, and thirty-nine percent impervious areas. Restoration of the stream channels is needed to restore geomorphic stability of the impaired stream channels, remove pollutants from the upstream watersheds, and improve water quality in these stream reaches and downstream. Rattlesnake Creek Stream Restoration Rattlesnake Creek is a tributary of the James River draining around 1,000 acres of mostly suburban lands in the northwestern corner of the City of Richmond and south side of the James River. The proposed stream restoration project will address 1,500 linear feet of the Rattlesnake Creek between E. Weyburn Road and Chippenham Parkway. The stream proposed for restoration receives drainage from approximately 840 acres of suburban lands. The land cover of the contributing drainage area consists of thirty-five percent forest, forty-six percent managed turf, and nineteen percent impervious. The current conditions of the stream reach exhibit near vertical stream banks that are actively eroding. The stream provides minimal removal of pollutants from the upstream watershed and contributes to downstream pollution. ix Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Executive Summary Restoration of the stream channel is needed to restore geomorphic stability of the impaired stream channel and remove pollutants from stormwater and the upstream watershed. Albro Creek Stream Restoration The Albro Creek project will restore approximately 1,281 linear feet of stream and create 3.0 acres of wetlands to restore and improve the water quality of Albro Creek (also called Bellemeade Creek), which flows to the James River via Goode’s Creek. The local project site is separated from the upstream section of Albro Creek by a large diversion pipe. The local drainage area upstream of the restoration site is 35.17 acres, and the upstream portion of Albro Creek drains approximately 1,200 acres. Because the restored stream will have the potential to remove more nutrients than the local drainage area (35.17 acres) is generating, a flow splitting structure will be utilized to convey additional flows to the restored section of Albro Creek during wet weather events. Opportunities may also exist for establishment of a conservation buffer around this tributary of Goode’s Creek. This project is intended to improve water quality, provide flood protection, and reduce bank erosion. Pocosham Creek Stream Restoration The Pocosham Creek stream restoration project (Project) is located on a tributary of Pocoshock Creek that flows into Falling Creek, which ultimately flows to the James River. This tributary drains approximately 3,625 acres of mostly suburban and forest lands in the southwestern side of the City, west of the James River. Approximately half of the watershed is located within the City-limits and the other half is located in Chesterfield County. The restoration project will restore approximately a 5,990 linear feet of stream channel. Figure ES-2 is an example of the current condition of the creek. Figure ES-2. Current condition of Pocosham Creek (dated October 2013). A 6-foot wide trail will be constructed as part of the Pocosham Creek Stream Restoration project. x Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Executive Summary The path will run the length of the restoration segment (approximately 6,000 linear feet) and will utilize the access corridor created by the Contractor to construct the project. Access to the path will be from the multiple construction entrances at the various locations along the project. Maury Cemetery Creek Stream Restoration The Maury Cemetery Stream Restoration project is located within the City’s Maury Cemetery and will restore approximately 1,980 linear feet of stream channel. The project is bounded to the north by Maury Street, to the south by North Hopkins Road, to the east by an existing CSX railroad, and to the west by Maury Cemetery. This work is being performed to improve the overall function of the Maury Cemetery Stream, including but not limited to preventing erosion, restoring habitat, and improving the water quality function of the stream. Figure ES-3 is an example of the current condition of the creek. The project is expected to include the following elements: Modifying grades of the existing Maury Cemetery Stream Demolition and removal of existing masonry and stone structures Installation of new storm sewer pipe and/or extending existing storm sewer pipe Installation of in-stream structures such as log J-hooks and fieldstone cross vanes Vertical off setting of existing waterline Adjusting rim of existing sanitary structures Landscaping and restoration of all disturbed areas Figure ES-3. Current condition of Maury Cemetery Creek (dated December 2013). Each project is currently in design or in the planning process. The POC reduction for each project is shown in Table ES-5. At a minimum, the City will ensure that projects will be in construction by June 30, 2018 to meet the five percent required progress. Progress greater than five percent will be credited toward the second permit term Plan. xi Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Executive Summary Table ES-5. First Permit Term Pollutant Reduction Credits Total Nitrogen (lb/yr) Project Total Phosphorus (lb/yr) Total Suspended Solids (lb/yr) Reedy Creek Stream Restoration 165.00 149.60 98,736.00 Rattlesnake Creek Stream Restoration 112.50 102.00 67,320.00 96.08 87.11 57,491.28 Pocosham Creek Stream Restoration 449.25 407.32 268,831.20 Maury Cemetery Stream Restoration 148.50 134.64 88,862.40 Total 919.58 833.75 550,273.68 Albro Creek Stream Restoration The first permit term required reductions will be exceeded and the additional credit will be included in the second permit term Plan. The second permit term will require that the City meet a 35 percent reduction requirement. The credit from this Plan to be applied in the second permit term includes 2.44 percent TN, 25.55 percent TP, and 41.43 percent TSS, as shown in Table ES-6. Table ES-6. First Permit Term Pollutant Reduction Requirements and Second Permit Term Credit Total Total Total Suspended Nitrogen Phosphorus Project Solids (lb /yr) (lb /yr) (lb /yr) First Permit Term Reduction Credit 919.58 833.75 550,273.68 First Permit Term Required Reduction 618.23 136.45 59,260.42 Credit to be Applied in Second Permit Term 301.35 697.30 491,013.26 2.44% 25.55% 41.43% Percent Reduction to be Applied in Second Permit Term Table ES-7 provides the current project status, implementation schedule, and cost estimate for each project. Pocosham Creek Stream Restoration and Maury Cemetery Stream Restoration are in the planning process and anticipated to begin construction in August 2015. Reedy Creek, Rattlesnake Creek, and Albro Creek are currently in design with construction anticipated to begin in late 2015. The total cost of implementation is approximately $7 million. xii Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Executive Summary Table ES-7. First Permit Term Implementation Schedule and Estimated Cost to Complete Project Status Estimated Construction Start Date Reedy Creek Stream Restoration In Design October 2015 $1,270,000 Rattlesnake Creek Stream Restoration In Design December 2015 $1,104,000 Albro Creek Stream Restoration In Design December 2015 $1,432,000 Pocosham Creek Stream Restoration Design Complete August 2015 $2,500,000 Maury Cemetery Stream Restoration Design Complete August 2015 $905,000 Project Estimated Cost to Complete Total Estimated Cost to Complete Projects $7,211,000 In addition to the stream restoration projects described previously, the City is currently implementing or planning to implement other projects throughout the City. The City currently conducts a street sweeping program City-wide. The City is also conducting a green alleys program. This program is creating buffer strips and other pervious areas in highly impervious areas throughout the City. The City is also planning additional projects in fiscal years 2016 and 2017. Specific project data is not yet available for inclusion in the first permit term Plan; however, the City will document these projects as they are designed and constructed and incorporate them into future Plans. In addition to the development of the MS4 service area and projects to meet the five percent required reduction, the City has provided a review of the legal authority it has to implement the Chesapeake Bay TMDL. This review is provided in Section 2. An overview of the public review process is included in Section 5. This first permit term TMDL Action Plan will become effective within 90 days of its submittal to DEQ, unless the City is otherwise notified. It represents the City’s plan for meeting its Phase II MS4 Permit requirements for the Chesapeake Bay TMDL Special Condition through 2018. xiii Use of contents on this sheet is subject to the limitations specified at the end of this document. Final Richmond Chesapeake Bay TMDL AP - final Section 1 Introduction The City of Richmond (City) has developed this first permit term Total Maximum Daily Load (TMDL) Action Plan (Plan) for the Chesapeake Bay nutrient and sediment TMDL, as required by the 20132018 General Permit for Discharges of Stormwater from Small (Phase II) Municipal Separate Storm Sewer Systems (MS4s) Number VAR040005. This Plan was developed following the Virginia Department of Environmental Quality (DEQ) Chesapeake Bay TMDL Action Plan Guidance Document (Guidance Document) dated May 18, 2015. This Plan is the first of three permit terms of Chesapeake Bay TMDL Action Plans to be developed by the City to reduce the total nitrogen (TN), total phosphorus (TP), and total suspended solids (TSS) loads from urban stormwater runoff. The City is located within the James River Basin in central Virginia, and has a total land area of 40,011 acres, as shown in Figure 1-1. It is bordered by Chesterfield and Henrico Counties, and is bisected by the James River. The City is located within the 2000 US Census Urban Cluster named Richmond, Virginia. Figure 1-1. Richmond and the extents of the James River Basin. 1-1 DRAFT for review purposes only. Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 1 The following sections explain the methods for the delineation of the 2009 City MS4 service area, calculation of the pollutant of concern (POC) loads and reduction requirements, and the projects that the City plans to implement to meet the reductions. Maps of the MS4 service area and a list of the spatial datasets used for this evaluation are provided in Appendices A and B, respectively. In addition, this Plan includes an evaluation of the current and future legal authority to implement the Plan, a description of the public comment process, and an estimate of implementation costs. 1-2 DRAFT for review purposes only. Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final Section 2 Legal Authority for TMDL Implementation The Phase II MS4 Permit requires that the Plan document the current program and legal authority, new or modified legal authority, and the means and methods to address discharges from the new sources. 2.1 Current Program and Existing Legal Authority Richmond has reviewed its current MS4 Program Plan and has determined that the authority as stated in the current MS4 Program Plan is sufficient for compliance with this special condition. Please refer to Appendix C for a list of relevant existing legal authority. A list of the current program and existing legal authority will be provided by the City in the final Plan. 2.2 New or Modified Legal Authority As described in Section 2.1, existing authority is sufficient for compliance with this special condition. Therefore, no new or modified legal authority is considered necessary to meet the requirements of this special condition. 2.3 Means and Methods to Address Discharges from New Sources Richmond will adhere to the VSMP regulations for the implementation of post-development stormwater management facilities. 2-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final Section 3 POC Loads and Required Reductions In accordance with the MS4 permit and Guidance Document dated May 18, 2015, POC loads and first permit required reductions were calculated from the City’s MS4 service area and land cover as of June 30, 2009. The MS4 service area was developed from the City boundary and 2000 US Census Urban Area; excluding the combined sewer system (CSS) service area, other MS4 and VPDES permittees, forested areas, open water bodies, and areas of surface runoff away from the MS4. After the MS4 service area was delineated, the surrounding areas were reviewed for areas of surface runoff into the MS4. Figure 1 in Appendix A identifies the final MS4 service area and exclusion and inclusion areas. After the MS4 service area was defined, the land cover characteristics as of June 30, 2009 were estimated, and POC loads and reductions were calculated based upon the James River Basin rates provided in the Phase II MS4 Permit. Finally, additional loads from new sources were evaluated and the total first permit term required reduction was calculated. Each of these steps is described further in sections below. 3.1 Definition of the MS4 Service Area The Guidance Document dated May 18, 2015 defines the initial MS4 service area as the 2000 US Census Urban Areas within the municipality’s boundary. Areas occupied by the CSS, other MS4 and VPDES permittees, forested areas, and open water bodies may be excluded from the MS4 service area. Land areas that drain by surface runoff away from the MS4 may be excluded from calculations of the City’s pollutant removal requirement. Similarly, areas that drain by surface runoff onto lands currently served by the City MS4 must be included in calculations of the City’s pollutant removal requirement. The MS4 service area was delineated using spatial data provided by the City or obtained from other sources, as documented in Appendix B. In accordance with the Guidance Document dated May 18, 2015, the initial MS4 service area was defined using the 2000 US Census Urban Areas and the City boundary. Individual exclusion area files were created for VPDES and other MS4 permittees, forested areas and wetlands, agricultural lands, and open waters. Some areas fall into more than one exclusion category, and so exclusion areas are partially overlapping. The initial MS4 service area was clipped in geographic information systems (GIS) program using each of the exclusion area files to create an interim MS4 service area. After the interim MS4 service area was developed, areas that drain by surface flow away from the City MS4 were delineated in GIS and excluded from calculations of the City’s pollutant removal requirement. Similarly, land areas outside of the City boundary that drain by surface flow onto lands currently served by the City MS4 were delineated, because they contribute to the City’s pollutant removal requirement. These surface flows out of and into the MS4 service area were subtracted from or added to the interim service area to create the final MS4 service area for the first permit term Plan. 3-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 3.1.1 City of Richmond Boundary The City boundary GIS file was downloaded from the City’s website in March 2014. This file consists of a single polygon that represents the entire City including the James River. The total area of the City, as represented in this file, is approximately 40,011 acres. 3.1.2 2000 US Census Urban Areas The US Census Bureau defined urban areas during the 2000 census as a core of census blocks with a minimum population density of 1,000 people per square mile and surrounding census blocks with a minimum population density of 500 people per square mile. The 2000 US Census urban areas, as revised in 2011, were downloaded from the US Census website in January 2015. The City boundary is located entirely within the Richmond, Virginia Urban Cluster. 3.1.3 Combined Sewer System Although the CSS service area is not specifically listed in Guidance Document dated May 18, 2015 as an exclusion area from the MS4, the CSS service areas are not part of the MS4, and are regulated separately by DEQ. The CSS service area is delineated in a GIS file provided by the City in March 2014. The GIS file includes revisions dated February 2014 and represents the current system. The CSS is primarily located in the northeastern portion of the City including the Virginia Commonwealth University campus, with a smaller CSS located across the James River. The CSS area encompasses approximately 10,618 acres of the City. Figure 1 in Appendix A displays the CSS service area. 3.1.4 VPDES Permittees Lands regulated under an Individual VPDES Permit for Industrial Stormwater Discharges—or any General VPDES Permit that addresses industrial stormwater—may be excluded from the City MS4 service area. These permittees must meet stormwater discharge requirements as stated in their permits. DEQ documents individual and general VPDES Permits in a statewide database and provides permittee data on the DEQ website in Microsoft Excel spreadsheets. The spreadsheets were accessed from the DEQ website in January 2015, and active permits located within the City were selected from the files for GIS mapping. There are five Individual VPDES permittees located within the City, as shown in Table 3-1. The table includes permit number, facility name and address, permit type, and facility type. Table 3-1. Individual VPDES Permittees Permit No. Facility Address Permit Type Facility Type VA0087734 Dominion - Materials and Metering Services Center 4307 Castlewood Rd Minor Industrial VA0058378 Kinder Morgan Southeast Terminals LLC - Richmond 2 4110 Deepwater Terminal Rd Minor Industrial VA0086151 Kinder Morgan Transmix Company LLC 3302 Deepwater Terminal Rd Minor Industrial VA0063177 Richmond WWTP 1400 Brander St Major Municipal VA0085499 Spruance Genco LLC 5001 Commerce Rd Minor Industrial There are three types of General VPDES permits that may be excluded from the MS4 service area; the General VPDES Permit for Stormwater Associated with Industrial Activity (VAR05), the General VPDES Permit for Concrete Products Facilities (VAG11), and the General VPDES Permit for Nonmetallic Mineral Mining (VAG84). 3-2 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 Each of these permits addresses industrial stormwater discharge requirements that the operator must achieve prior to discharging stormwater runoff from the permitted facility. The concrete products facilities and nonmetallic mineral mining permits were added to the allowable exclusions in the Guidance Document dated May 18, 2015. There are twenty-three general permittees within the City, as shown in Table 3-2. Twenty of the permits are for industrial activities, one permit is for concrete products facilities, and two permits are for nonmetallic mineral mining. Table 3-2. General VPDES Permittees Permit No. Facility Address Permit Type VAR050554 Spruance Genco LLC 5001 Commerce Rd Industrial Activity VAR050563 Smith Iron and Metal Company Inc. 3000 Bells Rd Industrial Activity VAR050588 SMM Southeast LLC - Richmond 3220 Deepwater Terminal Rd Industrial Activity VAR050603 Eubank Trucks Incorporated 3708 N Hopkins Rd Industrial Activity VAR050613 Carpenter Company Richmond Division 2400 Jefferson Davis Hwy Industrial Activity VAR050657 UPS Freight - Richmond 5401 Midlothian Tpke Industrial Activity VAR050910 Upaco Adhesives - Division of Worthen Industries 4105 Castlewood Rd Industrial Activity VAR051019 Philip Morris USA Incorporated - Manufacturing Ctr 3601 Commerce Rd Industrial Activity VAR051020 Port of Richmond 5000 Deepwater Terminal Rd Industrial Activity VAR051027 Liphart Steel Company Incorporated 3308 Rosedale Ave Industrial Activity VAR051103 Sonoco Products Company 1850 Commerce Rd Industrial Activity VAR051133 Estes Express Lines 1200 Commerce Rd Industrial Activity VAR051151 Packaging Corporation of America 2000 Jefferson Davis Hwy Industrial Activity VAR051176 International Paper Company - Richmond Plant 2811 Cofer Rd Industrial Activity VAR051484 Branscome Richmond - Deepwater Terminal Rd 2106 Deepwater Terminal Rd Industrial Activity VAR051549 International Paper - Richmond Recycling Center 1308 Jefferson Davis Hwy Industrial Activity VAR051818 Richmond Recycling Company 2500 Decatur St Industrial Activity VAR051888 Kenan Transport LLC - 506 E Clopton St 506 E Clopton St Industrial Activity VAR052028 Greater Richmond Transit Co – O/M 301 E Belt Blvd Industrial Activity VAR052128 Alloy Polymers Incorporated 3310 Deepwater Terminal Rd Industrial Activity VAG110308 Hanson Pipe and Precast - Richmond 2900 Terminal Dr Concrete Products Facility VAG840078 Luck Stone - South Richmond Plant 2100 Deepwater Terminal Rd Nonmetallic Mineral Mining VAG840120 Vulcan Construction Materials LP - Richmond Quarry 1500 Goodes St Nonmetallic Mineral Mining A VPDES Permittee GIS file was developed from the City parcel GIS file and the VPDES permittee spreadsheets. The City parcel GIS file was downloaded from the City website in January 2015. The permittees were located by property address in GIS using the City parcel attributes and the permit number and permit type were added as new attribute fields. The permit locations were then reviewed with aerial imagery and surrounding parcel ownership data to determine whether neighboring parcels appear to be contiguous permittee lands of the same land use. Figure 3-1 displays the locations of the land areas associated with the permits. 3-3 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 Figure 3-1. VPDES Permits within the City. 3.1.5 Other MS4 Permittees In addition to removing the VPDES permittees from the MS4 service area, other MS4 permittees were identified within the City boundary. The MS4 permittees Excel spreadsheet was accessed from the DEQ website in January 2015. Two other Phase II General MS4 permittees are located within the City, as shown in Table 3-3. The Hunter Homes McGuire Veteran Affairs Hospital was identified using the same process as the VPDES permittees, as discussed in Section 3.1.4 and shown in Figure 3-1. Table 3-3. Other Municipal Separate Storm Sewer Systems Permit No. Owner/Operator Designation Type VAR040133 Virginia Department of Transportation Phase II State VAR040074 Hunter Homes McGuire Veteran Affairs Hospital Phase II Federal The roadways maintained by the Virginia Department of Transportation (VDOT), which owns a statewide Phase II MS4 permit, were identified in two stages. First, the City parcel GIS file and the City boundary GIS file were evaluated to identify undelineated areas in the parcel file. These voids are typically roadway rights-of-way (ROWs), including VDOT-maintained roads. A VDOT ROW GIS file was created by clipping a copy of the City boundary GIS file with the parcel information so that only the roadway ROWs remained. Next, the interstates within the City were identified. These include I-64, I-95, and I-195 and associated on and off ramps. It is assumed that VDOT will be responsible for all stormwater within their ROW areas, so no other modifications were made to the GIS file. The VDOT ROWs are approximately 597 acres within the City boundary. Figure 3-2 includes the location of the VDOT ROWs. 3-4 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 Figure 3-2. VDOT ROW within the City. 3.1.6 Forested Lands and Wetlands A raster image file was downloaded from VA Department of Forestry (DOF) website in April 2015. The VA DOF file was created in 2005 using 2004 aerial imagery to identify forests that meet the US Forest Service (USFS) Forest Inventory and Analysis (FIA) Program. The raster image classifies land in three categories; water, forest, and non-forest. The resolution of the raster image is a 30 meter grid. The US Fish and Wildlife Service (FWS) National Wetlands Inventory (NWI) GIS file was downloaded from the FWS website in June 2014. The FWS NWI metadata indicates that the wetlands within the City were identified between 1994 and 2000. A review of the locations of NWI wetlands within the City boundary indicated that the same locations were also included in the VA DOF raster image or the open waters GIS files discussed in Section 3.1.8. As such, the FWS and NWI GIS file was not needed for this analysis. The raster image file was converted into a polygon GIS file and clipped to the City boundary. The resulting file was then evaluated to isolate the forest land category and remove polygons that are less than 0.5 acres. The final GIS file indicates approximately 5,188 acres of forested lands within the City boundary. Figure 3-3 displays the locations of forested lands. 3-5 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 Figure 3-3. Forested land within the City. 3.1.7 Agricultural Lands DEQ added agricultural lands as a category of allowable MS4 service area exclusions in the Guidance Document dated May 18, 2015. A review of the current aerial imagery, as well as the 2011 US Geological Survey (USGS) National Land Cover Dataset (NLCD), indicated that there were no significant agricultural lands within the City boundary. As such, a City GIS file of agricultural lands was not created for this Plan. 3.1.8 James River and Open Waters The James River and open waters GIS files were derived from two basemap GIS files accessed from the City website in January 2015. The James River was selected from the StreamPolys GIS file. This new James River exclusion area file was modified to include the small islands that drain directly into the river. The other open waters are defined in the Lakes GIS file. This file was reviewed for accuracy and used in its entirety to exclude surface waters from the MS4 service area. The total area of the open waters, as represented in these files, is approximately 2,222 acres. Figure 1 in Appendix A displays the Open Waters exclusion areas. 3.1.9 Stormwater Runoff between Jurisdictions Although the drainage basin delineation for each outfall is an ongoing effort by the City, an initial assessment of areas that drain by surface runoff into and out of the MS4 service area was completed for the first permit term Plan. Surface runoff areas were delineated in GIS using current aerial imagery, the City boundary, the stormwater conveyance system, the City contours, and USGS National Elevation Dataset (NED) topography. The stormwater conveyance system GIS files were provided by the City in March 2014 and represent the best available data for the current system. 3-6 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 Contour lines were also provided by the City in March 2014 and represent the topography in two foot intervals within the City boundary. The USGS NED files were accessed in January 2015 from the USGS NED website. The NED GIS file is a regional raster image containing elevation data on a ten meter grid. This file allowed for the review of locations outside of the County boundary. Some areas within City boundary drain by surface runoff away from the City’s conveyance system and out of the City, and thus are not served by the City MS4. These areas were excluded from the POC load and required reduction calculations. Most of these areas are along the James River, whereas others drain into the Chesterfield or Henrico MS4 service areas. The outflow areas recommended for removal from the MS4 area are shown on Figure 1 in Appendix A. The total area that drains by surface runoff out of the system is approximately 483 acres. The City is responsible for treating the POC loads and meeting the required reductions for any area served by the MS4, including those areas outside of the City boundary that reach the stormwater conveyance system by surface runoff. Contour data and the USGS NED DEM were used to identify these areas, which are displayed on Figure 1 in Appendix A. The total area that drains by surface runoff into the system is approximately twenty-two acres. The areas that drain by surface runoff incorporated into this first permit term Plan are an initial assessment of the MS4 service area and drainage areas. It is recommended that the surface flow GIS files be reevaluated after the outfall drainage basin delineation is complete, and that the revised surface flows are included in the second permit term Plan. 3.1.10 Delineation of the Final MS4 Service Area The development of the final MS4 service area was completed in GIS using the datasets described in Sections 3.1 through 3.1.9 (Table 3-4). The first step was to evaluate the City boundary and the 2000 US Census Urban Areas, because the entire City boundary is included in the Urban Areas. The initial MS4 service area is identical to the City area. Table 3-4. Areas of Inclusion and Exclusion from the MS4 Service Area Area Category Area (Ac) City of Richmond Boundary 40,011 Exclusion Areas CSS 10,618 VPDES permits and other MS4s (excluding VDOT) 1,043 VDOT Roads 597 Forested Lands and Wetlands 5,188 Agricultural Lands 0 Open Water 2,222 Surface Flow 483 Total Exclusion Area (Non-Overlapping)b 18,631 Total MS4 Service Area within the City Boundary 21,380 Inclusion Areas: Surface Inflow 22 Total Inclusion Area 22 Total MS4 Service Area 21,402 b. The total exclusion area is less than the sum of the individual exclusion areas because some of the individual exclusion areas overlap. 3-7 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 The second step in delineation of the MS4 service area was to remove the exclusion areas from the initial MS4 service area because the exclusion areas overlap. The sum of the individual exclusion areas is greater than the total of the exclusions, as noted in Table 2-4. The final step to delineate the MS4 service area was to add the surface flow inclusion area, also shown in Table 2-4. The final MS4 service area to be used in the POC load and required reduction calculations is 21,402 acres. 3.2 Estimated Existing Source Loads The baseline (2009) annual POC loading rates, as documented in the Phase II MS4 Permit and the Guidance Document dated May 18, 2015, were estimated by the Chesapeake Bay Program using the Watershed Model Phase 5.3.2. The 2009 pervious and impervious land cover within the service area was estimated using the current impervious land cover and the historical USGS NLCD land cover GIS files. The annual POC loads for the City were then calculated using the 2009 pervious and impervious lands cover conditions within the MS4 service area. 3.2.1 2009 Pervious and Impervious Land Cover The 2009 land cover characteristics were estimated from the 2014 impervious area in the City and an estimate of the annual average change in land cover, which itself was derived from the 2006 and 2011 USGS NLCD GIS files. First, the current impervious cover GIS files within the City boundary was accessed from the City website in January 2015. The City impervious areas are shown in three GIS files: transportation surfaces, buildings, and road edge. Each type of impervious area was delineated from aerial imagery. The road edge GIS file included lines at the edge of the pavement. This file was converted to polygons and reviewed for accuracy. The impervious cover files were clipped to the MS4 service area and the pervious cover was calculated as the remaining area, as shown in Figure 3-4 and Table 3-5. Figure 3-4. Impervious areas within the MS4 service area. 3-8 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 Table 3-5. MS4 Service Area Land Cover in 2009 and 2014 2014 MS4 Land Cover (ac)c Land Cover Impervious 2006 NLCD Land Cover (ac)d 2011 NLCD Land Cover (ac)d 2006-2011 USGS Average Annual Change Estimated 2009 MS4 Land Cover (ac)e 7,378 5,799 5,953 0.144% 7,224 Pervious 14,002 15,544 15,390 -0.144% 14,156 Total Area 21,380 21,343 21,343 21,380 c. Impervious land cover provided by the City from the GIS basemap dataset. Impervious land cover was digitized from aerial imagery. d. Pervious and Impervious land covers calculated from USGS land cover raster imagery. Data resolution is a 30 meter grid. e. Dataset is an estimate of the historical land cover. GIS datasets from 2009 were not available. The next step required evaluating the 2006 and 2011 USGS NLCD GIS files to calculate an annual average change in land cover. These files were accessed from the NLCD website in January 2015. The files contain raster images on a thirty meter grid that are classified as one of twenty land cover types. The raster images were clipped to the MS4 service area and the raster images were converted to polygons. The land cover within the City MS4 service area includes fifteen land cover classifications: Open Water Developed Open Space Developed, Low Intensity Developed, Medium Intensity Developed, High Intensity Barren Land Deciduous Forest Evergreen Forest Mixed Forest Shrub/Scrub Grassland/Herbaceous Pasture/Hay Cultivated Crops Woody Wetlands Emergent Herbaceous Wetlands. Each location identified as the pasture/hay or cultivated crops land cover classifications were evaluated with aerial imagery, and determined to be sites that were under construction. Therefore, these sites were categorized as their pre-development land cover (pervious land cover types) for this calculation. The impervious area for each dataset was calculated from the four developed land cover classes and the open water land cover. 3-9 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 The average impervious area for each developed land cover was estimated for each land cover type based upon the NLCD definition; ten percent for Developed Open Space, thirty-five percent for Developed Low Intensity, sixty-five percent for Developed Medium Intensity, and ninety percent for Developed High Intensity. The percentage of impervious area was multiplied by the total area of each developed classification and the open water area was added to the developed acreage. The open water areas are locations that do not align with the more accurate lakes file which was used to delineate the open water exclusion area, as described in Section 3.1.8. The pervious area included all other land cover classifications and the remaining developed areas. The results are shown in columns 3 and 4 of Table 2-5. Due to the raster image clipping, some edge areas were not included in the polygon GIS files, but the small excluded area (thirty-seven acres) was consistent between both datasets. After calculating the land cover in 2006 and 2011, the average annual change in land cover was calculated, as shown in Table 2-5. The average annual change was applied to the 2014 City land cover to estimate the land cover conditions in 2009. The total impervious area within the MS4 service area in 2009 was estimated to be 7,224 acres, which is approximately thirty-four percent of the MS4 service area. The urban pervious cover in 2009 was estimated to be 14,156 acres, which is approximately sixty-six percent of the MS4 service area. Based upon a review of aerial imagery, areas that surface runoff into the MS4 surface area from outside of the City boundary were estimated to have the same proportion of pervious and impervious land cover as areas within the City. These areas included seven acres of impervious cover and fifteen acres of pervious cover, as shown in Table 3-6. Table 2-6. Surface Runoff into the MS4 from Other Jurisdictions Land Cover 2009 % Land Cover Estimated 2009 Surface Runoff Area (Ac) Impervious 34% 7 Pervious 66% 15 Total Area 22 3.2.2 Annual POC Load Calculations – Existing Sources as of 2009 The final MS4 service area defined in Section 3.1.10, and the land cover estimates described in Section 3.2.1, were used to calculate the annual pollutant loads for existing sources under 2009 conditions. The annual pollutant loading rates are prescribed in the Phase II MS4 Permit by drainage basin. Pollutant loading rates have been defined for pervious and impervious urban lands for TN, TP, and TSS at the edge of stream (EOS). Table 3-7 presents the existing source loads for the City, within the James River Basin, as calculated from loading rates in Table 2a of the Phase II MS4 Permit. The existing source loads are 166,956 pounds per year of TN, 19,812 pounds per year of TP, and 6,327,579 pounds per year of TSS. 3-10 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 Table 3-7. Existing (2009) Source Loads for the James River Basin Subsource Regulated Urban impervious Regulated Urban Pervious Regulated Urban impervious Regulated Urban Pervious Regulated Urban impervious Regulated Urban Pervious Pollutant Total Existing 2009 EOS Acres Served by Loading Rate MS4 (06/30/09) (lb/Ac/yr) Total Nitrogen Total Phosphorus Total Suspended Solids Estimated Total POC Load Based on 2009 Progress Run (lb/yr) 7,231.38 9.39 67,902.69 14,170.62 6.99 99,052.51 7,231.38 1.76 12,727.23 Estimated Total POC Load (lb/yr) 166,955.30 19,812.54 14,170.62 0.5 7,085.31 7,231.38 676.94 4,895,212.70 14,170.62 101.08 1,432,365.92 6,327,578.62 3.3 Calculated Pollutant of Concern Required Reductions The required reductions of POCs from existing (2009) sources in the Phase II MS4 Permit are consistent with the Chesapeake Bay TMDL and the Virginia Permit Terms I and II Watershed Improvement Plans, and are based on the Chesapeake Bay Model Phase 5.3.2 L2 scoping run for existing developed lands. The total required reductions from the annual pollutant loading rates vary for each pollutant and land cover. As specified in the Virginia Permit Term I Watershed Improvement Plan, the required first permit term pollutant reductions are five percent of the total required reductions specified in the L2 scoping run. The City has identified projects to achieve the required pollution reductions to the maximum extent practicable for the first permit term as detailed in Section 4 of this Plan. The total required reductions and first permit term reductions for the James River Basin are identified in Table 3-8. Table 3-8. Required POC Reduction Rates from Existing (2009) Sources for the James River Basin Subsource Regulated Urban impervious Pollutant Total Nitrogen Regulated Urban Pervious Regulated Urban impervious Total Phosphorus Regulated Urban Pervious Regulated Urban impervious Regulated Urban Pervious Total Suspended Solids 2009 EOS Loading Rate (lb/ac/yr) Total % Required Reduction Total Required Reduction (lb/ac/yr) First Permit Term Required Reduction (lb/ac/yr) 9.39 9% 0.8451 0.042255 6.99 6% 0.4194 0.02097 1.76 16% 0.2816 0.01408 0.5 7.25% 0.03625 0.0018125 676.94 20% 135.388 6.7694 101.08 8.75% 8.8445 0.442225 3-11 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 Table 3-9 presents the required reductions from existing sources, as calculated from reduction rates in Table 3a of the Phase II MS4 Permit. The first permit term required reductions for existing sources within the City are 602.72 pounds of TN, 127.50 pounds of TP, and 55,218.73 pounds of TSS. Table 3-9. First Permit Term Required Reductions from Existing (2009) Sources for the James River Basin Subsource Regulated Urban impervious Regulated Urban Pervious Regulated Urban impervious Regulated Urban Pervious Regulated Urban impervious Regulated Urban Pervious Pollutant First Permit Cycle Total Reduction Total Existing Acres Total Reduction Required Reduction Required First Served by MS4 Required First in Loading Rate Permit Cycle (06/30/09) Permit Cycle (lb/yr) (lb/ac/yr) (lb/yr) 7,231.38 0.042255 305.56 14,170.62 0.02097 297.16 7,231.38 0.01408 101.82 14,170.62 0.0018125 25.68 7,231.38 6.7694 48,952.13 602.72 Total Nitrogen 127.50 Total Phosphorus Total Suspended Solids 55,218.73 14,170.62 0.442225 6,266.60 3.4 Additional Source Loads and Required Reductions In addition to the required pollution reductions for existing development, the City must account for any increased pollutant loads from new sources and grandfathered projects. New sources are addressed under Phase II MS4 Permit Special Condition 7 and grandfathered projects are addressed under Phase II MS4 Permit Special Condition 8. For the first permit term Plan, the City is required to provide additional treatment to remove five percent of the net increase in pollutant loads for any developments that meet the criteria of Special Condition 7. The City must provide treatment for the net increase in pollutant loads for any project that meets the criteria of Special Condition 8. 3.4.1 Means and Methods to Offset Increased Loads from New Sources Initiating Construction between July 1, 2009 and June 30, 2014 Special Condition 7 is a Phase II MS4 permit requirement that pertains to certain projects that initiated construction between July 1, 2009 and June 30, 2014 and meet the following criteria: Greater than one acre land disturbance Increase in the POC loads from existing condition An impervious land cover condition greater than 16 percent for the design of postdevelopment stormwater management facilities The City is required to provide additional POC load reductions for any project that meets the Special Condition 7 criteria. The aggregate accounting method was selected to determine the additional treatment requirements from new sources, as described in Example II.2 in the Guidance Document dated May 18, 2015. The additional POC reductions associated Special Condition 7 were calculated by several steps. 3-12 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 First, the “post-development” POC loads as of July 1, 2014 were calculated with the 2014 land cover within the City shown in Table 3-5 and the estimated surface water runoff from other jurisdictions shown in Table 3-6, using the same EOS loading rates as the 2009 “pre-development” condition included in Table 3-7. Table 3-10 shows the estimated “post-development” POC loading within the MS4 service area. Table 3-10. Post-Development Conditions July 1, 2014 Subsource Pollutant Regulated Urban Impervious Regulated Urban Pervious Regulated Urban Impervious Regulated Urban Pervious 2009 EOS Loading Rate (lb/Ac) 7,385.59 9.39 Estimated Total POC Load as of 07/01/1 4 69,350.71 14,016.41 6.99 97,974.69 7,385.59 1.76 12,998.64 14,016.41 0.50 7,008.20 7,385.59 676.94 4,999,602.62 14,016.41 101.08 1,416,778.53 Total Nitrogen Regulated Urban Pervious Regulated Urban Impervious Total Existing Acres Served by the MS4 (07/01/14) Total Phosphorus Total Suspended Solids After the pre and post development POC loads were defined, the total change in loads was calculated. Table 3-11 shows the estimated change in loads from June 30, 2009 to July 1, 2014. The estimated loads increased due to the increase in impervious area from 2009 to 2014. Table 3-11. Total Load Changes from New Sources between June 30, 2009 and July 1, 2014 Subsource Regulated Urban Impervious Regulated Urban Pervious Regulated Urban Impervious Regulated Urban Pervious Regulated Urban Impervious Regulated Urban Pervious Pollutant Estimated Total POC Load as of 07/01/14 (lb/yr) Estimated Total POC Load as of 06/30/09 (lb/yr) Load Change (lb/yr) 69,350.71 67,902.69 1,448.02 Total Nitrogen 370.10 97,974.69 99,052.51 (1,077.92) 12,998.64 12,727.23 271.41 7,008.20 7,085.31 (77.10) 4,999,602.62 4,895,212.70 104,389.91 Total Phosphorus Total Suspended Solids Total Load Change (lb/yr) 194.30 88,802.52 1,416,778.53 1,432,365.92 (15,587.40) Next, the best management practices (BMPs) that were implemented between June 30, 2009 and July 1, 2014 were evaluated to determine the total treatment provided. The City provided a spreadsheet of all known BMPs within the City boundary in January 2015. 3-13 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 The BMP list was filtered to remove sites within the CSS service area and to remove sites that were constructed outside of the new sources timeframe. The filtered BMP list is included in Appendix D. The total POC reduction from BMPs is 59.90 pounds for TN, 15.40 pounds for TP, and 7,968.70 pounds for TSS. The POC reduction from BMPs was subtracted from the total change in loads, as shown in Table 3-12. Table 3-12. Net Load Change (Total Load Change Minus Reductions from Implemented BMPs) Pollutant Total Nitrogen Total Phosphorus Total Suspended Solids Total Load Change (lb/yr) Reductions from on-site BMPs (lb/yr) Net Load Change (lb/yr) 370.10 194.30 88,802.52 59.90 15.40 7,968.70 310.2 178.90 80,833.82 The City will be required to treat the entire net load change to the maximum extent practicable during the three permit terms in 5 percent, 35 percent, and 60 percent increments. In the current permit term, the City is required to offset five percent of the net load change to the maximum extent practicable (Table 3-13) associated with new sources. The method utilized by the City to achieve the required reductions is discussed in Section 4. Table 3-13. Additional Reductions Required During First Permit Cycle Pollutant Total Nitrogen Total Phosphorus Total Suspended Solids Net Load Change(lb/yr) Required Reduction during first permit cycle 310.2 178.90 80,833.82 5% 5% 5% Additional Reductions Required during First Permit Cycle (lb/yr) 15.51 8.95 4,041.69 3.4.2 Means and Methods to Offset Increased Loads from Grandfathered Projects that Begin Construction after July 1, 2014 Special Condition 8 is a Phase II MS4 permit requirement that applies to all projects with construction initiated after July 1, 2014 and designs that meet the following requirements: Greater than one acre land disturbance Increase in the pollutant loads from existing condition An impervious land cover condition greater than 16 percent for the design of postdevelopment stormwater management facilities The City is required to provide additional pollutant load reductions for any project that meets the Special Condition 8 requirements above prior to project construction completion. The reduction requirement is calculated as the difference between (1) the post-development loading rate; and (2) the loading rate associated with sixteen percent impervious cover. The City revised its VSMP requirements to meet the 16 percent impervious land cover requirements for the design of post-development stormwater management facilities in 2009, as discussed in the Legal Authority Review in Section 2. Since the requirements were revised in 2009, the City does not anticipate that any projects will meet the criteria for Special Condition 8. 3-14 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 3 3.5 Total First Permit Term Required Reductions The total required reductions during the first permit cycle are the combined total POC loads from existing developments and new sources. The total first permit term required reductions are 618.23 pounds of TN, 136.45 pounds of TP, and 59,260.42 pounds of TSS, as shown in Table 3-14. Table 3-14. Total Reductions Required During First Permit Cycle Pollutant Total Nitrogen Total Phosphorus Total Suspended Solids Grandfathered Projects (Special Condition 8) Required Reductions (lb/yr) 0 0 Total First Permit Term Required Reductions (lb/yr) 602.72 127.50 New Sources (Special Condition 7) Required Reductions (lb/yr) 15.51 8.95 55,218.73 4,041.69 0 59,260.42 Existing Development Required Reductions (lb/yr) 3-15 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final 618.23 136.45 Section 4 Means and Methods to Meet Required Reductions and Schedule The Phase II MS4 permit requires that the Plan identify the means and methods to meet the required reductions. The City will primarily rely on stream restoration projects to meet the first permit term required reductions. All methods discussed in this Plan are prescribed by expert panels approved by the Chesapeake Bay Program. The following sections discuss projects in planning, design or construction to meet the first permit term pollutant reduction requirement. 4.1 Historical BMP Data The City previously provided DEQ with information on BMPs installed prior to July 1, 2009. No additional historical projects are provided as a part of this Plan. 4.2 Pollutant Reduction Project Types The City intends to achieve the required reductions of TN, TP, and TSS through five urban stream restoration because these projects have been initiated after January 1, 2006. Pollutant reduction credits have been calculated using the interim approved removal rates developed by the Bay Program Stream Restoration Expert Panel, as presented in Appendix V.I of the Guidance Document dated May 18, 2015. The removal rates are 0.075 lb/lf/yr for TN, 0.068 lb/lf/yr for TP, and 44.88 lb/lf/yr for TSS. All the streams are 0-3rd order streams and not tidally influenced. These efficiencies are the minimum efficiencies for stream restoration projects within this Plan and these removal rates may be adjusted to reflect future increases in efficiency rates. All the project sites are within the city’s MS4 service area and, therefore, no adjustments to computed credits are required. 4.3 Projects for Pollutant Removal Credit The City is currently conducting a program to select and implement projects to achieve the required reductions for the current and future permit cycles. Five projects have been identified by the City for this Plan: Reedy Creek Stream Restoration Rattlesnake Creek Stream Restoration Albro (Goode’s) Creek Stream Restoration Pocosham Creek Stream Restoration Maury Cemetery Stream Restoration These projects are currently in design or planning process at a minimum. The City anticipates beginning construction of projects prior to the end of the current permit term to achieve the five percent first permit term required reduction. All projects will have funds approved as a part of an adopted Capital Improvement Plan (CIP) by the end of the current Phase II MS4 Permit term in 2018 in order to maintain the current POC reductions calculated in the following sections. 4-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 4 Each project location is identified on Figure 2 in Appendix A. Alternative projects may be substituted during the current permit cycle at the City’s discretion to achieve the POC reductions. 4.3.1 Reedy Creek Stream Restoration Reedy Creek is a tributary of the James River draining approximately 3,075 acres of urban and suburban lands in the southwestern portion of the City. The project will restore approximately 2,200 linear feet of the Reedy Creek and the downstream portion of an unnamed tributary. The land on which the project will be conducted is owned by the City and is administered by the Department of Parks, Recreation and Community Facilities. The approximate project location is shown in Figure 4-1. Figure 4-1. Approximate location of Reedy Creek stream restoration. The two stream channels to be restored receive stormwater from a total of approximately 2,310 acres. The land cover of the contributing drainage area consists of seventeen percent forest and open space, forty-four percent managed turf, and thirty-nine percent impervious areas. Restoration of the stream channels is needed to restore geomorphic stability of the impaired stream channels, remove pollutants from the upstream watersheds, and improve water quality in these stream reaches and downstream. The Reedy Creek stream restoration project is included in the City’s Stormwater Master Plan, and will be partially funded using DEQ’s matching Stormwater Local Assistance Fund (SLAF) Grant. The project will employ natural channel design practices to emphasize contribution to stream functional improvements while reducing stormwater pollutants. The Reedy Creek project will also include the creation of constructed wetlands and reconnection of the stream channels with the floodplain. 4-2 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 4 Using the approved pollutant removal rates, it is estimated that the project will remove 165.00 lb/yr of TN, 149.60 lb/yr of TP, and 98,736.00 lb/yr of TSS as shown in Table 4-1. Table 4-1: Pollutant Removal Calculations for Reedy Creek Stream Restoration Total Nitrogen Total Phosphorus Total Suspended Solids Approved Removal Rates (lb/lf/yr) 0.075 0.068 44.88 Stream length (lf) 2,200 2,200 2,200 Pollutant Removal (lb/yr) 165.00 149.60 98,736.00 Pollutant The project design began in January 2015 and construction is anticipated to be completed in June 2016, with an estimated total cost of $1,270,000. 4.3.2 Rattlesnake Creek Stream Restoration Rattlesnake Creek is a tributary of the James River draining around 1,000 acres of mostly suburban lands in the northwestern corner of the City of Richmond and south side of the James River. The proposed stream restoration project will address 1,500 linear feet of the Rattlesnake Creek between E. Weyburn Road and Chippenham Parkway. The approximate project location is included in Figure 4-2. Figure4-2. Approximate location of the Rattlesnake Creek stream restoration. 4-3 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 4 The stream proposed for restoration receives drainage from approximately 840 acres of suburban lands. The land cover of the contributing drainage area consists of thirty-five percent forest, forty-six percent managed turf, and nineteen percent impervious. The current conditions of the stream reach exhibit near vertical stream banks that are actively eroding. The stream provides minimal removal of pollutants from the upstream watershed and contributes downstream pollution. Restoration of the stream channel is needed to restore geomorphic stability of the impaired stream channel and remove pollutants from stormwater and the upstream watershed. The restoration project is included in the City’s Stormwater Master Plan and will be partially funded using DEQ’s matching SLAF Grant. The project will employ natural channel design practices to emphasize contribution to stream functional improvements while reducing stormwater pollutants. Stream restoration efforts will involve grading the stream channel banks, installing in-channel flow and re-directive and grade control boulder structures, as well as riparian plantings. These restorative measures are intended to provide pollutant abatement and improve water quality, improve diversity of aquatic habitat areas, reduce bank erosion, and enhance riparian habitats. Using the approved pollutant removal rates, it is estimated that the project will remove 112.50 lb/yr of TN, 102.00 lb/yr of TP, and 67,320.00 lb/yr of TSS as shown in Table 4-2. Table 4-2: Pollutant Removal Calculations for Rattlesnake Creek Stream Restoration Total Nitrogen Total Phosphorus Total Suspended Solids Approved Removal Rates (lb/lf/yr) 0.075 0.068 44.88 Stream length (lf) 1,500 1,500 1,500 Pollutant Removal (lb/yr) 112.50 102.00 67,320.00 Pollutant The project design began in October 2014 and construction is anticipated to be completed in July 2016 with an estimated total cost of $1,104,000. 4.3.3 Albro Creek Stream Restoration The Albro Creek project will restore approximately 1,281 linear feet of stream and create of 3.0 acres of wetlands to restore and improve the water quality of Albro Creek (also called Bellemeade Creek), which flows to the James River via Goode’s Creek. The local project site is separated from the upstream section of Albro Creek by a large diversion pipe. The local drainage area upstream of the restoration site is 35.17 acres, and the upstream portion of Albro Creek drains approximately 1,200 acres. Because the restored stream will have the potential to remove more nutrients than the local drainage area (35.17 acres) is generating, a flow splitting structure will be utilized to convey additional flows to the restored section of Albro Creek during wet weather events. Opportunities may also exist for establishment of a conservation buffer around this tributary of Goode’s Creek. This project is intended to improve water quality, provide flood protection, and reduce bank erosion. The approximate project location is shown in Figure 4-3. 4-4 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 4 Figure 4-3. Approximate location of the Albro Creek stream restoration. Using the approved pollutant removal rates, it is estimated that the project will remove 96.08 lb/yr of TN, 87.11 lb/yr of TP, and 57,491.28 lb/yr of TSS as shown in Table 4-3. Table 4-3: Pollutant Removal Calculations for Albro Creek Stream Restoration Total Nitrogen Total Phosphorus Total Suspended Solids Approved Removal Rates (lb/lf/yr) 0.075 0.068 44.88 Stream length (lf) 1,281 1,281 1,281 Pollutant Removal (lb/yr) 96.08 87.11 57,491.28 Pollutant The project design began in October 2014 and construction is anticipated to be completed in October 2016, with an estimated total cost of $1,432,000. 4.3.4 Pocosham Creek Stream Restoration The Pocosham Creek stream restoration project (Project) is located on a larger tributary of Pocoshock Creek that flows into Falling Creek, which ultimately flows to the James River. This larger tributary drains approximately 3,625 acres of mostly suburban and forest lands in the southwestern side of the City, west of the James River. Approximately half of the watershed is located within the City-limits and the other half is located in Chesterfield County. The restoration project will restore approximately a 5,990 linear feet of stream channel. The approximate project location is shown in Figure 4-4. 4-5 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 4 Figure 4-4. Approximate location of the Pocosham Creek stream restoration. A 6-foot wide trail will be constructed as part of the Pocosham Creek Stream Restoration project. The path will run the length of the restoration segment (approximately 6,000 linear feet) and will utilize the access corridor created by the Contractor to construct the project. Access to the path will be from the multiple construction entrances at the various locations along the project. This project is included in the City’s Stormwater Master Plan. The goals of this project are to reduce pollutants in the watershed by repairing the eroding sections of the creek and adding a bankfull floodplain bench to reduce velocities and erosion. In-stream structures, such as cross vanes, j-hook vanes, and vanes will be implemented into the project to improve stability and create and enhance habitat within the creek corridor. The project will also incorporate walking trails to improve access and amenities in Pocosham Park. Using the approved pollutant removal rates, it is estimated that completion of the Pocosham Creek stream restoration project will remove 449.25 lb/yr of TN, 407.32 lb/yr of TP, and 268,831.20 lb/yr of TSS as shown in Table 4-4. Table 4-4: Pollutant Removal Calculations for Pocosham Creek Stream Restoration Total Nitrogen Total Phosphorus Total Suspended Solids Approved Removal Rates (lb/lf/yr) 0.075 0.068 44.88 Stream length (lf) 5,990 5,990 5,990 Pollutant Removal (lb/yr) 449.25 407.32 268,831.20 Pollutant 4-6 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 4 Construction is planned to begin in August 2015 and is anticipated to be completed in April 2016 with estimate total cost of $2,500,000. 4.3.5 Maury Cemetery Stream Restoration The Maury Cemetery Stream Restoration project is located within the City’s Maury Cemetery and will restore approximately 1,980 linear feet of stream channel. The project is bounded to the north by Maury Street, to the south by North Hopkins Road, to the east by an existing CSX railroad, and to the west by Maury Cemetery. This work is being performed to improve the overall function of the Maury Cemetery Stream, including but not limited to preventing erosion, restoring habitat, and improving the water quality function of the stream. The approximate project location is shown in Figure 4-5. The project is expected to include the following elements: Modifying grades of the existing Maury Cemetery Stream Demolition and removal of existing masonry and stone structures Installation of new storm sewer pipe and/or extending existing storm sewer pipe Installation of in-stream structures such as log J-hooks and fieldstone cross vanes Vertical off setting of existing waterline Adjusting rim of existing sanitary structures Landscaping and restoration of all disturbed areas Figure 4-5. Approximate location of the Maury Cemetery Creek stream restoration. Using the approved pollutant removal rates, it is estimated that completion of the Maury Cemetery stream restoration project will remove 148.50 lb/yr of TN, 134.64 lb/yr of TP, and 88,862.40 lb/yr of TSS as shown in Table 4-5. 4-7 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 4 Table 4-5: Pollutant Removal Calculations for Maury Cemetery Stream Restoration Total Nitrogen Total Phosphorus Total Suspended Solids Approved Removal Rates (lb/lf/yr) 0.075 0.068 44.88 Stream length (lf) 1,980 1,980 1,980 Pollutant Removal (lb/yr) 148.50 134.64 88,862.40 Pollutant Construction is planned to begin in August 2015 and is anticipated to be completed in January 2016 with a total cost of $905,000. 4.3.6 First Permit Term Pollutant Reduction Credit Credits from all of the above five urban stream restoration projects are summarized, and the total credits from these projects are calculated and shown in Table 4-6. Table 4-6. First Permit Term Pollutant Reduction Credits Total Nitrogen (lb /yr) Total Phosphorus (lb /yr) Total Suspended Solids (lb /yr) Reedy Creek Stream Restoration 165.00 149.60 98,736.00 Rattlesnake Creek Stream Restoration 112.50 102.00 67,320.00 Albro Creek Stream Restoration 96.08 87.11 57,491.28 Pocosham Creek Stream Restoration 449.25 407.32 268,831.20 Maury Cemetery Stream Restoration 148.50 134.64 88,862.40 Total 919.58 833.75 550,273.68 Project The first permit term required reductions will be exceeded and the additional credit will be included in the second permit term Plan. The second permit term will require that the City meet a 35 percent reduction requirement. The credit from this Plan to be applied in the second permit term includes 2.44 percent TN, 25.55 percent TP, and 41.43 percent TSS, as shown in Table 4-7. Table 4-7. First Permit Term Pollutant Reduction Requirements and Second Permit Term Credit Total Total Total Suspended Nitrogen Phosphorus Project Solids (lb /yr) (lb /yr) (lb /yr) First Permit Term Reduction Credit 919.58 833.75 550,273.68 First Permit Term Required Reduction 618.23 136.45 59,260.42 Credit to be Applied in Second Permit Term 301.35 697.30 491,013.26 Percent Reduction to be Applied in Second Permit Term 2.44% 25.55% 41.43% 4-8 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Section 4 4.3.7 Other Water Quality Projects in Planning or Implementation In addition to the stream restoration projects described previously, the City is currently implementing or planning to implement other projects throughout the City. The City current completes a street sweeping program City-wide. The City is also completing a green alleys program. This program is creating buffer strips and other pervious areas in highly impervious areas throughout the City. The City is also planning additional projects in fiscal years 2016 and 2017. Specific project data is not yet available for inclusion in the first permit term Plan; however, the City will document these projects as they are designed and constructed and incorporate them into future Plans. 4.4 Implementation Schedule and Estimated Cost to Complete Table 4-8 shows the current project status, anticipated construction start date and the cost of construction for each of the stream restoration projects. All projects are currently in design or ready for construction. The total cost to complete the projects is approximately $7,200,000. Table 4-8. First Permit Term Implementation Schedule and Estimated Cost to Complete Project Project Status Estimated Estimated Cost to Complete Construction Start Date Reedy Creek Stream Restoration In Design October 2015 $1,270,000 Rattlesnake Creek Stream Restoration In Design December 2015 $1,104,000 Albro Creek Stream Restoration In Design December 2015 $1,432,000 Pocosham Creek Stream Restoration In Design August 2015 $2,500,000 Maury Cemetery Stream Restoration In Design August 2015 $905,000 $7,211,000 Total Estimated Cost to Complete Projects 4.5 A List of Future Projects and Associated Acreage that Qualify as Grandfathered The City does not anticipate any developments that will meet the criteria for grandfathered projects, as defined in Section 3.4.2. 4-9 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final Section 5 Public Comments on Draft Action Plan The City plans to make the draft Plan available for comment on the website at http://www.richmondgov.com/PublicUtilities/StormwaterUtility/index.aspx during June 2015 and advertise the plan through a public announcement in several local newspapers. The City will also publicize the plan via announcements on the web and distribution through social media (utility blogs, twitter and Facebook). The summary of comments received will be addressed through the plan update submitted with the Annual Report in September 2015 and posted on the city’s website. September 2015 update: The city received no comments on the Action Plan during the public comment period which ended August 1, 2015. We were asked for two extensions, which were agreed to. No comments were submitted during the extended period, which ended August 15, 2015. We did receive comments on September 21, 2015 from the Reedy Creek Coalition (www.reedycreekcoaltion.org) with concerns about the ultimate success of the stream restoration in Reedy Creek. Even though the comments were received outside the allotted public comment period, the city provided a response to the organization and since we are a partner with them in analyzing the samples collected in the creek, we hope that we can address the concerns expressed by them with future communication on the stream restoration. 5-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final Section 6 Conclusion The City developed this first permit term Plan as required in the 2013-2018 Phase II MS4 Permit Number VAR040005 and in accordance with the DEQ Guidance Document dated May 18, 2015. This Plan concludes that the first permit term pollutant reduction requirements calculated in Section 3 are met by the five stream projects identified in Section 4 of the Plan. Modifications to this Plan will be documented in Appendix E. During the second permit cycle, permittees will be required to reduce meet and additional thirty-five percent POC reductions to the maximum extent practicable. The existing projects identified in this first permit term Plan exceed the required five percent reductions and the additional reductions will be applied toward achieving the additional 35 percent reductions required by the second permit term. The City will continue to plan for compliance and the Plan will be updated accordingly. 6-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final Section 7 Limitations This document was prepared solely for the City of Richmond in accordance with professional standards at the time the services were performed, and in accordance with the contract between the City of Richmond and Brown and Caldwell dated December 4, 2014. This document is governed by the specific scope of work authorized by the City of Richmond; it is not intended to be relied upon by any other party except for regulatory authorities contemplated by the scope of work. We have relied on information or instructions provided by the City of Richmond and other parties and, unless otherwise expressly indicated, have made no independent investigation as to the validity, completeness, or accuracy of such information. 7-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final Section 8 References Brown and Caldwell. Site Plans: Maury Cemetery Creek Stream Restoration. December 23, 2014 Brown and Caldwell. Site Plans: Pocosham Creek Stream Restoration. November 25, 2014 Schueler, Tom and Bill Stack. Recommendations of the Expert Panel to Define Removal Rates for Individual Stream Restoration Projects, Chesapeake Bay Program, September 8, 2014. Virginia Department of Environmental Quality. SLAF Grant Application: Albro Creek Stream Restoration. October 24, 2014. Virginia Department of Environmental Quality. SLAF Grant Application: Albro Creek Stream Restoration. October 24, 2014. Virginia Department of Environmental Quality. SLAF Grant Application: Pocosham Creek Stream Restoration. October 24, 2014. Virginia Department of Environmental Quality. SLAF Grant Application: Rattlesnake Creek Stream Restoration. October 24, 2014. Virginia Department of Environmental Quality. SLAF Grant Application: Reedy Creek Stream Restoration. October 24, 2014. Virginia Department of Environmental Quality Water Division, Chesapeake Bay TMDL Special Condition Guidance, August 18, 2015, draft revisions March 19, 2015. 8-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Plan Appendix A Appendix A: Maps Maps Figure 1: MS4 Service Area Delineation Figure 2: First Permit Term Projects A-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final Action Plan - Final City of Richmond Figure 1 MS4 Service Area Delineation June 2015 0 1 2 Miles Legend CityBoundary CSS Service Areas I-64 James River Forested Areas MS4 Boundary Surface Runoff into MS4 Surface Runoff Out Surface Waters VDOT Right of Way VA Hospital VPDES Concrete Products Facilities General Permit US 60 VPDES Individual Permit VPDES Nonmetallic Mineral Mining General Permit VPDES Stormwater General Permit US 360 City of Richmond s R oa Custi d ad ley D r Archd a le R o Darn 29 S th Dr y ur Ma St Kern St s Hwy Jefferson Davi E r re he Road June 2015 ve Perdue A Sc e Trabu Figure 2 First Phase Projects Str atfo r d R oad Ke nm ore Ro ad ad E NH ug ue Abbey Ro Wey burn no tR oad Road WW ey bu rn m El Ro a d Road 0 1 2 Miles t Brinser St Legend CityBoundary Stream N Hopkins Ro ad Water Features MS4 Boundary Project t W 42 th S 44 sto r I-64 Albro Creek Maury Cemetary Creek nA ve Pocosham Creek W Rattlesnake Creek ro ft Cir ft rcro No St nder R oad Walmsley Blvd m sha Wright Ave Road o Poc Dr em ont Road wy Pk Comm a m ha en ipp Ch Dr ton le mb Wi Holbo rn Royall Ave Warwick Ave Rid g ne La r en st Su D ritz St Mo Gunn St Zurich Dr Hey Road E lk Road Minefee St Crutchfield Geneva Dr No rc Reedy Creek t rop S No rth Ter W 46th St US 60 nd St Du n ive es R Jam City of Richmond Chesapeake Bay TMDL Plan Appendix B Appendix B: Source Data Source Data The following is a list of the GIS datasets, dates, and sources of GIS data used to develop the TMDL Action Plan. Data Collected from the City Basemap Files – Downloaded January 2015 City Boundary – dated January 2015 Road Edge – dated January 2015 Structures – dated January 2015 Stream Polygons – dated January 2015 Transportation Surfaces – dated January 2015 Parcels – Downloaded January 2015 Parcels ASR – dated January 2015 Parcels PINS – dated January 2015 Utility Data – Received April 2014 Combined Sewer Area – dated February 2014 Storm Canals – dated March 2014 Storm Culverts – dated January 2014 Storm Drop Inlets – dated March 2014 Storm Manholes – dated March 2014 Storm Open Channels – dated February 2014 Storm Pipes – dated March 2014 Utility Data – Received January 2015 Storm Outfalls – dated January 2015 BMP Excel Spreadsheet – dated October 2014 Data Collected from Tiger Census 2000 Census – Downloaded January 2015 Census Urban Area – dated June 2002 2010 Census – Downloaded January 2015 Census Urban Area – dated 2012Data Collected from DEQ B-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final Action Plan - Final City of Richmond Chesapeake Bay TMDL Plan Appendix B VPDES Permittees – Downloaded January 2015 Individual Permittees Spreadsheet – dated January 2015 Stormwater General Permittees Spreadsheet – dated January 2015 Individual MS4s – Downloaded January 2015 Phase I and Phase II MS4s Spreadsheet – dated January 2015 Data Collected from USGS NED National Elevation Dataset– Downloaded January 2015 Regional Elevation Raster Imagery – Dated 2013 Data Collected from VA DOF Forested Lands– Downloaded April 2015 Virginia Forest Cover Map 2005 – dated May 2005 B-2 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final Action Plan - Final City of Richmond Chesapeake Bay TMDL Action Plan Appendix C Appendix C: Existing Legal Authority List of Existing Legal Authority Chapter 50 Richmond City code: Floodplain Management, Erosion and Sediment Control, and Drainage Generally (Includes Floodplain management, Erosion and Sediment Control, Chesapeake Bay Preservation Areas, and Richmond Stormwater Management Program) https://www.municode.com/library/va/richmond/codes/code_of_ordinances?nodeId=CH50FLMAE RSECODRGE Chapter 106 Richmond City code: Utilities (Includes Wastewater Sewers and Collection System, Stormwater) https://www.municode.com/library/va/richmond/codes/code_of_ordinances?nodeId=CH106UT_AR TVIIIST Chapter 90 Richmond City Code: Streets, Sidewalks and Public Ways https://www.municode.com/library/va/richmond/codes/code_of_ordinances?nodeId=CH90STSIPU WA Chapter 46.1 Richmond City code: Fire Protection and Protection (Includes spill abatement) https://www.municode.com/library/va/richmond/codes/code_of_ordinances?nodeId=CH46.1FIPRP R C-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Plan Appendix D Appendix D: BMPs Constructed Between June 30, 2009 and July 1, 2014 Table D-1. BMPs Constructed between 7/1/2009 and 7/1/2014 (Filtered from 'City of Richmond SCM Database 10-1- 14.xlsx') D-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond Chesapeake Bay TMDL Action Plan Appendix E Appendix E: Modifications to the Plan Reserved for future use E-1 Use of contents on this sheet is subject to the limitations specified at the end of this document. Richmond Chesapeake Bay TMDL AP - final City of Richmond TMDL Action Plan Appendix D Table D-1. BMPs Constructed between 7/1/2009 and 7/1/2014 (Filtered from 'City of Richmond SCM Database 10-1-14.xlsx') BMP Street Database Number ID 00036 00037 00038 00035 00020 00030 00031 00032 00033 00034 00181 00009 00010 00011 00012 00013 00014 00015 00159 00018 00042 00084 00085 00106 00024 00025 00164 00114 00145 00115 00165 00166 00167 00168 00169 00170 00183 00184 00103 00109 00098 00099 4300 4300 4300 10655 6501 9131 9131 9131 9131 9131 33A 301 301 301 301 301 301 301 9200 2845 1800 301 301 2412 4200 4200 3903 5609 5204 5615 2409 2409 2409 2409 2409 2409 603 603 2600 302 1250 1250 Street Name Commerce Road Commerce Road Commerce Road Cherokee Road Buckhill Road Cherokee Road Cherokee Road Cherokee Road Cherokee Road Cherokee Road Westhampton Way Belt Boulevard Belt Boulevard Belt Boulevard Belt Boulevard Belt Boulevard Belt Boulevard Belt Boulevard Stony Point Pkwy Broad Rock Blvd Crenshaw Way Hillwood Road Hillwood Road Lakeview Ave Cary Street Road Cary Street Road Walmsley Blvd New Kent Road Riverside Dr. New Kent Road Webber Ave Webber Ave Webber Ave Webber Ave Webber Ave Webber Ave Westover Hills Blvd Westover Hills Blvd Jefferson Davis Hwy Long Lane Ingram Ave Ingram Ave Use of contents on this sheet is subject to the limitations specified in this document BMPs for SPCon7and8_SCM DatabaseFilter_20150313.xlsx GPS Coordinates Latitude 37.4669 37.4669 37.4669 37.5537 37.5415 37.5547 37.5547 37.5547 37.5547 37.5547 37.5743 37.5067 37.5067 37.5067 37.5067 37.5067 37.5067 37.5067 37.5496 37.4788 37.5722 37.5625 37.5625 37.5456 37.5606 37.5606 37.4683 37.5315 37.5297 37.5319 37.4966 37.4966 37.4966 37.4966 37.4966 37.4966 37.5142 37.5142 37.4879 37.5543 37.5076 37.5076 Longitude -77.4275 -77.4275 -77.4275 -77.5939 -77.5113 -77.5640 -77.5640 -77.5640 -77.5640 -77.5640 -77.5415 -77.4791 -77.4791 -77.4791 -77.4791 -77.4791 -77.4791 -77.4791 -77.5717 -77.4800 -77.5416 -77.5149 -77.5149 -77.4746 -77.4960 -77.4960 -77.4682 -77.4981 -77.4900 -77.4982 -77.4431 -77.4431 -77.4431 -77.4431 -77.4431 -77.4431 -77.4874 -77.4874 -77.4470 -77.5050 -77.4346 -77.4346 SCM Type Filtering Practices Filtering Practices Filtering Practices Dry Extended Detention Ponds Bioretention A/B Soils, Underdrain Filtering Practices Filtering Practices Filtering Practices Filtering Practices Filtering Practices Bioretention A/B Soils, Underdrain Filtering Practices Filtering Practices Filtering Practices Filtering Practices Filtering Practices Filtering Practices Filtering Practices Hydrodynamic Structures Dry Detention Ponds Filtering Practices Infiltration Practices w/o Sand, Vegetation Infiltration Practices w/o Sand, Vegetation Filtering Practices Filtering Practices Filtering Practices Filtering Practices Bioretention A/B Soils, No Underdrain Bioretention C/D Soils, Underdrain Bioretention A/B Soils, No Underdrain Bioretention C/D Soils, Underdrain Bioretention C/D Soils, Underdrain Bioretention C/D Soils, Underdrain Bioretention C/D Soils, Underdrain Bioretention C/D Soils, Underdrain Dry Extended Detention Ponds Filtering Practices Filtering Practices Hydrodynamic Structures Vegetated Open Channels A/B Soils, No Underdrain Dry Detention Ponds Dry Detention Ponds Impervious Pervious Total Treated Soil Type/ Underlying Treated Area Treated Area Area (Acres) Conditions (Acres) (Acres) 0.22 0.16 0.11 0.89 0.23 0.26 0.75 1.05 1.05 0.23 0.23 0.46 0.5 0.32 0.5 0.33 0.5 0.36 1.48 0.22 0.54 0.043 0.039 0.073 0.777 0.749 0.36 0.035 0.059 0.063 0.22 0.36 0.67 0.3 0.35 1.84 0.72 0.71 0.51 0.94 2.54 3.28 0.16 0.12 0.08 0.89 0.23 0.26 0.75 1.05 1.05 0.23 0.13 0.46 0.5 0.32 0.5 0.33 0.5 0.36 1.48 0 0.38 0.043 0.039 0.073 0.59 0.572 0.36 0.035 0.039 0.063 0.17 0.29 0.56 0.27 0.32 1.17 0.64 0.63 0.51 0.28 2.54 3.28 0.06 0.04 0.03 0 0 0 0 0 0 0 0.1 0 0 0 0 0 0 0 0 0.22 0.16 0 0 0 0.187 0.177 0 0 0.02 0 0.05 0.07 0.11 0.03 0.03 0.67 0.08 0.08 0 0.66 0 0 Impermeable Barrier Impermeable Barrier Impermeable Barrier B B D D D D D B Impermeable Barrier Impermeable Barrier Impermeable Barrier Impermeable Barrier Impermeable Barrier Impermeable Barrier Impermeable Barrier Impermeable Barrier B B D D Impermeable Barrier Impermeable Barrier Impermeable Barrier B B C B C C C C C C Impermeable Barrier Impermeable Barrier Impermeable Barrier B D D Total Treatment Volume Projected Pollutant Removal (lb/year) Date Brought Online Sediment Phosphorus Nitrogen 91.5 0.2 0.8 7/22/2009 68.2 0.1 0.6 7/22/2009 45.8 0.1 0.4 7/22/2009 361.5 0.3 1.7 9/1/2009 124.6 0.3 1.5 9/10/2009 140.8 0.3 1.0 9/30/2009 406.2 0.8 2.8 9/30/2009 568.6 1.1 3.9 9/30/2009 568.6 1.1 3.9 9/30/2009 124.6 0.2 0.9 9/30/2009 78.5 0.2 1.3 10/7/2009 249.1 0.5 1.7 1/15/2010 270.8 0.5 1.9 1/15/2010 173.3 0.3 1.2 1/15/2010 270.8 0.5 1.9 1/15/2010 178.7 0.3 1.2 1/15/2010 270.8 0.5 1.9 1/15/2010 195.0 0.4 1.4 1/15/2010 100.2 0.3 0.7 3/1/2010 2.2 0.0 0.1 11/9/2010 217.8 0.4 1.9 4/27/2011 27.7 0.1 0.3 10/1/2011 25.1 0.1 0.3 10/1/2011 39.5 0.1 0.3 1/13/2012 334.6 0.7 2.7 5/2/2012 324.1 0.7 2.6 5/2/2012 195.0 0.4 1.4 6/13/2012 21.3 0.1 0.3 7/27/2012 15.6 0.0 0.1 10/15/2012 38.4 0.1 0.5 5/4/2013 66.1 0.1 0.5 6/20/2013 111.9 0.2 0.8 6/20/2013 214.6 0.5 1.5 6/20/2013 102.2 0.2 0.7 6/20/2013 120.8 0.3 0.8 6/20/2013 515.8 0.5 3.1 6/20/2013 353.1 0.7 2.6 7/11/2013 347.6 0.7 2.6 7/11/2013 34.5 0.1 0.2 8/1/2013 179.4 0.4 3.3 8/5/2013 171.9 0.4 1.2 1/3/2014 222.0 0.6 1.5 1/3/2014 7968.7 15.4 59.9 D-2
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