TITLE 9. ENVIRONMENT
Title of Regulation: 9VAC25-720. Water Quality Management Planning Regulation (amending 9VAC25-720-50).
Statutory Authority: § 62.1-44.15 of the Code of Virginia; 33 USC § 1313(e) of the Clean Water Act.
Effective Date: February 18, 2010.
Agency Contact: John M. Kennedy, Department of Environmental Quality, 629 East Main Street, P.O. Box 1105, Richmond, VA 23218, telephone (804) 698-4312, FAX (804) 698-4116, TTY (804) 698-4021, or email jmkennedy@deq.virginia.gov.
Summary:
The proposed amendments to the Nutrient Waste Load Allocations in the Water Quality Management Planning Regulation, 9 VAC 25-720-50 C (Potomac, Shenandoah River Basin), provided increases for total nitrogen (TN) and total phosphorus (TP) for two facilities:
1. Frederick-Winchester S.A. (FWSA) - Opequon WRF (VPDES #VA0065552).
2. Merck WWTP (VPDES #VA0002178).
However, the final amendments are modified from the proposed as follows:
1. The allocation increase for FWSA - Opequon is not changed in the allocation table.
2. The allocation for Merck WWTP is not changed in the allocation table. However, a footnote is added that among other things grants an allocation increase effective January 1, 2011.
Summary of Public Comments and Agency's Response: A summary of comments made by the public and the agency's response may be obtained from the promulgating agency or viewed at the office of the Registrar of Regulations.
9VAC25-720-50. Potomac-Shenandoah River Basin.
A. Total Maximum Daily Load (TMDLs).
| TMDL # | Stream Name | TMDL Title | City/County | WBID | Pollutant | WLA | Units |
| 1. | Muddy Creek | Nitrate TMDL Development for Muddy Creek/Dry River, Virginia | Rockingham | B21R | Nitrate | 49,389.00 | LB/YR |
| 2. | Blacks Run | TMDL Development for Blacks Run and Cooks Creek | Rockingham | B25R | Sediment | 32,844.00 | LB/YR |
| 3. | Cooks Creek | TMDL Development for Blacks Run and Cooks Creek | Rockingham | B25R | Sediment | 69,301.00 | LB/YR |
| 4. | Cooks Creek | TMDL Development for Blacks Run and Cooks Creek | Rockingham | B25R | Phosphorus | 0 | LB/YR |
| 5. | Muddy Creek | TMDL Development for Muddy Creek and Holmans Creek, Virginia | Rockingham | B22R | Sediment | 286,939.00 | LB/YR |
| 6. | Muddy Creek | TMDL Development for Muddy Creek and Holmans Creek, Virginia | Rockingham | B22R | Phosphorus | 38.00 | LB/YR |
| 7. | Holmans Creek | TMDL Development for Muddy Creek and Holmans Creek, Virginia | Rockingham/
Shenandoah | B45R | Sediment | 78,141.00 | LB/YR |
| 8. | Mill Creek | TMDL Development for Mill Creek and Pleasant Run | Rockingham | B29R | Sediment | 276.00 | LB/YR |
| 9. | Mill Creek | TMDL Development for Mill Creek and Pleasant Run | Rockingham | B29R | Phosphorus | 138.00 | LB/YR |
| 10. | Pleasant Run | TMDL Development for Mill Creek and Pleasant Run | Rockingham | B27R | Sediment | 0.00 | LB/YR |
| 11. | Pleasant Run | TMDL Development for Mill Creek and Pleasant Run | Rockingham | B27R | Phosphorus | 0.00 | LB/YR |
| 12. | Linville Creek | Total Maximum Load Development for Linville Creek: Bacteria and Benthic Impairments | Rockingham | B46R | Sediment | 5.50 | TONS/YR |
| 13. | Quail Run | Benthic TMDL for Quail Run | Rockingham | B35R | Ammonia | 7,185.00 | KG/YR |
| 14. | Quail Run | Benthic TMDL for Quail Run | Rockingham | B35R | Chlorine | 27.63 | KG/YR |
| 15. | Shenandoah River | Development of Shenandoah River PCB TMDL (South Fork and Main Stem) | Warren & Clarke | B41R B55R B57R B58R | PCBs | 179.38 | G/YR |
| 16. | Shenandoah River | Development of Shenandoah River PCB TMDL (North Fork) | Warren & Clarke | B51R | PCBs | 0.00 | G/YR |
| 17. | Shenandoah River | Development of Shenandoah River PCB TMDL (Main Stem) | Warren & Clarke | WV | PCBs | 179.38 | G/YR |
| 18. | Cockran Spring | Benthic TMDL Reports for Six Impaired Stream Segments in the Potomac-Shenandoah and James River Basins | Augusta | B10R | Organic Solids | 1,556.00 | LB/YR |
| 19. | Lacey Spring | Benthic TMDL Reports for Six Impaired Stream Segments in the Potomac-Shenandoah and James River Basins | Rockingham | B47R | Organic Solids | 680.00 | LB/YR |
| 20. | Orndorff Spring | Benthic TMDL Reports for Six Impaired Stream Segments in the Potomac-Shenandoah and James River Basins | Shenandoah | B52R | Organic Solids | 103.00 | LB/YR |
| 21. | Toms Brook | Benthic TMDL for Toms Brook in Shenandoah County, Virginia | Shenandoah | B50R | Sediment | 8.1 | T/YR |
| 22. | Goose Creek | Benthic TMDLs for the Goose Creek Watershed | Loudoun, Fauquier | A08R | Sediment | 1,587 | T/YR |
| 23. | Little River | Benthic TMDLs for the Goose Creek Watershed | Loudoun | A08R | Sediment | 105 | T/YR |
| 24. | Christians Creek | Fecal Bacteria and General Standard Total Maximum Daily Load Development for Impaired Streams in the Middle River and Upper South River Watersheds, Augusta County, VA | Augusta | B14R | Sediment | 145 | T/YR |
| 25. | Moffett Creek | Fecal Bacteria and General Standard Total Maximum Daily Load Development for Impaired Streams in the Middle River and Upper South River Watersheds, Augusta County, VA | Augusta | B13R | Sediment | 0 | T/YR |
| 26. | Upper Middle River | Fecal Bacteria and General Standard Total Maximum Daily Load Development for Impaired Streams in the Middle River and Upper South River Watersheds, Augusta County, VA | Augusta | B10R | Sediment | 1.355 | T/YR |
| 27. | Mossy Creek | Total Maximum Daily Load Development for Mossy Creek and Long Glade Run: Bacteria and General Standard (Benthic) Impairments | Rockingham | B19R | Sediment | 0.04 | T/YR |
| 28. | Smith Creek | Total Maximum Daily Load (TMDL) Development for Smith Creek | Rockingham, Shenandoah | B47R | Sediment | 353,867 | LB/YR |
| 29. | Abrams Creek | Opequon Watershed TMDLs for Benthic Impairments: Abrams Creek and Lower Opequon Creek, Frederick and Clarke counties, Virginia | Frederick | B09R | Sediment | 478 | T/YR |
| 30. | Lower Opequon Creek | Opequon Watershed TMDLs for Benthic Impairments: Abrams Creek and Lower Opequon Creek, Frederick and Clarke counties, Virginia | Frederick, Clarke | B09R | Sediment | 1,039 | T/YR |
| 31. | Mill Creek | Mill Creek Sediment TMDL for a Benthic Impairment, Shenandoah County, Virginia | Shenandoah | B48R | Sediment | 0.9 | T/YR |
| 32. | South Run | Benthic TMDL Development for South Run, Virginia | Fauquier | A19R | Phosphorus | 0.038 | T/YR |
| 33. | Lewis Creek | Total Maximum Daily Load Development for Lewis Creek, General Standard (Benthic) | Augusta | B12R | Sediment | 40 | T/YR |
| 34. | Lewis Creek | Total Maximum Daily Load Development for Lewis Creek, General Standard (Benthic) | Augusta | B12R | Lead | 0 | KG/YR |
| 35. | Lewis Creek | Total Maximum Daily Load Development for Lewis Creek, General Standard (Benthic) | Augusta | B12R | PAHs | 0 | KG/YR |
| 36. | Bull Run | Total Maximum Daily Load Development for Lewis Creek, General Standard (Benthic) | Loudoun, Fairfax, and Prince William counties, and the Cities of Manassas and Manassas Park | A23R-01 | Sediment | 5,986.8 | T/TR |
| 37. | Popes Head Creek | Total Maximum Daily Load Development for Lewis Creek, General Standard (Benthic) | Fairfax County and Fairfax City | A23R-02 | Sediment | 1,594.2 | T/YR |
| 38. | Accotink Bay | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Fairfax | A15R | PCBs | 0.0992 | G/YR |
| 39. | Aquia Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Stafford | A28E | PCBs | 6.34 | G/YR |
| 40. | Belmont Bay/
Occoquan Bay | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Prince William | A25E | PCBs | 0.409 | G/YR |
| 41. | Chopawamsic Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Prince William | A26E | PCBs | 1.35 | G/YR |
| 42. | Coan River | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Northumberland | A34E | PCBs | 0 | G/YR |
| 43. | Dogue Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Fairfax | A14E | PCBs | 20.2 | G/YR |
| 44. | Fourmile Run | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Arlington | A12E | PCBs | 11 | G/YR |
| 45. | Gunston Cove | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Fairfax | A15E | PCBs | 0.517 | G/YR |
| 46. | Hooff Run & Hunting Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Fairfax | A13E | PCBs | 36.8 | G/YR |
| 47. | Little Hunting Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Fairfax | A14E | PCBs | 10.1 | G/YR |
| 48. | Monroe Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Fairfax | A31E | PCBs | .0177 | G/YR |
| 49. | Neabsco Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Prince William | A25E | PCBs | 6.63 | G/YR |
| 50. | Occoquan River | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Prince William | A25E | PCBs | 2.86 | G/YR |
| 51. | Pohick Creek/Pohick Bay | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Fairfax | A16E | PCBs | 13.5 | G/YR |
| 52. | Potomac Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Stafford | A29E | PCBs | 0.556 | G/YR |
| 53. | Potomac River, Fairview Beach | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | King George | A29E | PCBs | 0.0183 | G/YR |
| 54. | Powells Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Prince William | A26R | PCBs | 0.0675 | G/YR |
| 55. | Quantico Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | Prince William | A26R | PCBs | 0.742 | G/YR |
| 56. | Upper Machodoc Creek | PCB Total Maximum Daily Load Development in the tidal Potomac and Anacostia Rivers and their tidal tributaries | King George | A30E | PCBs | 0.0883 | G/YR |
| 57. | Difficult Creek | Benthic TMDL Development for Difficult Run, Virginia | Fairfax | A11R | Sediment | 3,663.2 | T/YR |
| 58. | Abrams Creek | Opequon Watershed TMDLs for Benthic Impairments | Frederick and Clark | B09R | Sediment | 1039 | T/YR |
| 59. | Lower Opequon | Opequon Watershed TMDLs for Benthic Impairments | Frederick and Clark | B09R | Sediment | 1039 | T/YR |
B. Non-TMDL waste load allocations.
| Water Body | Permit No. | Facility Name | Outfall No. | Receiving Stream | River Mile | Parameter Description | WLA | Units WLA |
| VAV-B02R | VA0023281 | Monterey STP | 001 | West Strait Creek | 3.85 | CBOD5 | 11.4 | KG/D |
| VAV-B08R | VA0065552 | Opequon Water Reclamation Facility | 001 | Opequon Creek | 32.66 | BOD5, JUN-NOV | 207 | KG/D |
| | | AKA Winchester - Frederick Regional | | | | CBOD5, DEC-MAY | 1514 | KG/D |
| VAV-B14R | VA0025291 | Fishersville Regional STP | 001 | Christians Creek | 12.36 | BOD5 | 182 | KG/D |
| VAV-B23R | VA0060640 | North River WWTF | 001 | North River | 15.01 | CBOD5, JAN-MAY | 700 | KG/D |
| | 7.23.04 | AKA Harrisonburg - Rockingham Reg. Sewer Auth. | | | | CBOD5, JUN-DEC | 800 | KG/D |
| TKN, JUN-DEC | 420 | KG/D |
| TKN, JAN-MAY | 850 | KG/D |
| VAV-B32R | VA0002160 | INVISTA - Waynesboro Formerly Dupont - Waynesboro | 001 | South River | 25.3 | BOD5 | 272 | KG/D |
| VAV-B32R | VA0025151 | Waynesboro STP | 001 | South River | 23.54 | CBOD5 | 227 | KG/D |
| CBOD5, JUN-OCT | 113.6 | KG/D |
| VAV-B32R | VA0028037 | Skyline Swannanoa STP | 001 | South River UT | 2.96 | BOD5 | 8.5 | KG/D |
| VAV-B35R | VA0024732 | Massanutten Public Service STP | 001 | Quail Run | 5.07 | BOD5 | 75.7 | KG/D |
| VAV-B37R | VA0002178 | Merck & Company | 001 | S.F. Shenandoah River | 88.09 | BOD5 | 1570 | KG/D |
| AMMONIA, AS N | 645.9 | KG/D |
| VAV-B49R | VA0028380 | Stoney Creek Sanitary District STP | 001 | Stoney Creek | 19.87 | BOD5, JUN-NOV | 29.5 | KG/D |
| VAV-B53R | VA0020982 | Middletown STP | 001 | Meadow Brook | 2.19 | CBOD5 | 24.0 | KG/D |
| VAV-B58R | VA0020532 | Berryville STP | 001 | Shenandoah River | 24.23 | CBOD5 | 42.6 | KG/D |
C. Nitrogen and phosphorus waste load allocations to restore the Chesapeake Bay and its tidal rivers. The following table presents nitrogen and phosphorus waste load allocations for the identified significant dischargers and the total nitrogen and total phosphorus waste load allocations for the listed facilities.
| Virginia Waterbody ID | Discharger Name | VPDES Permit No. | Total Nitrogen (TN) Waste Load Allocation (lbs/yr) | Total Phosphorus (TP) Waste Load Allocation (lbs/yr) |
| B37R | Coors Brewing Company | VA0073245 | 54,820 | 4,112 |
| B14R | Fishersville Regional STP | VA0025291 | 48,729 | 3,655 |
| B32R | INVISTA - Waynesboro (Outfall 101) | VA0002160 | 78,941 | 1,009 |
| B39R | Luray STP | VA0062642 | 19,492 | 1,462 |
| B35R | Massanutten PSA STP | VA0024732 | 18,273 | 1,371 |
| B37R | Merck - Stonewall WWTP (Outfall 101) [ (11) (10) ] | VA0002178 | [ 14,619 43,835 ] | [ 1,096 4,384 ] |
| B12R | Middle River Regional STP | VA0064793 | 82,839 | 6,213 |
| B23R | North River WWTF (2) | VA0060640 | 253,391 | 19,004 |
| B22R | VA Poultry Growers -Hinton | VA0002313 | 27,410 | 1,371 |
| B38R | Pilgrims Pride - Alma | VA0001961 | 18,273 | 914 |
| B31R | Stuarts Draft WWTP | VA0066877 | 48,729 | 3,655 |
| B32R | Waynesboro STP | VA0025151 | 48,729 | 3,655 |
| B23R | Weyers Cave STP | VA0022349 | 6,091 | 457 |
| B58R | Berryville STP | VA0020532 | 8,528 | 640 |
| B55R | Front Royal STP | VA0062812 | 48,729 | 3,655 |
| B49R | Georges Chicken LLC | VA0077402 | 31,065 | 1,553 |
| B48R | Mt. Jackson STP (3) | VA0026441 | 8,528 | 640 |
| B45R | New Market STP | VA0022853 | 6,091 | 457 |
| B45R | North Fork (SIL) WWTF | VA0090263 | 23,390 | 1,754 |
| B49R | Stoney Creek SD STP | VA0028380 | 7,309 | 548 |
| B50R | North Fork Regional WWTP (1) | VA0090328 | 9,137 | 685 |
| B51R | Strasburg STP | VA0020311 | 11,939 | 895 |
| B50R | Woodstock STP | VA0026468 | 24,364 | 1,827 |
| A06R | Basham Simms WWTF (4) | VA0022802 | 18,273 | 1,371 |
| A09R | Broad Run WRF (5) | VA0091383 | 134,005 | 3,350 |
| A08R | Leesburg WPCF | MD0066184 | 121,822 | 9,137 |
| A06R | Round Hill Town WWTF | VA0026212 | 9,137 | 685 |
| A25R | DSC - Section 1 WWTF (6) | VA0024724 | 42,029 | 2,522 |
| A25R | DSC - Section 8 WWTF (7) | VA0024678 | 42,029 | 2,522 |
| A25E | H L Mooney WWTF | VA0025101 | 219,280 | 13,157 |
| A22R | UOSA - Centreville | VA0024988 | 1,315,682 | 16,446 |
| A19R | Vint Hill WWTF (8) | VA0020460 | 8,680 | 868 |
| B08R | Opequon WRF [ (10) ] | VA0065552 | [ 102,336 115,122 ] | [ 7,675 11,506 ] |
| B08R | Parkins Mills STP (9) | VA0075191 | 60,911 | 4,568 |
| A13E | Alexandria SA WWTF | VA0025160 | 493,381 | 29,603 |
| A12E | Arlington County Water PCF | VA0025143 | 365,467 | 21,928 |
| A16R | Noman M Cole Jr PCF | VA0025364 | 612,158 | 36,729 |
| A12R | Blue Plains (VA Share) | DC0021199 | 581,458 | 26,166 |
| A26R | Quantico WWTF | VA0028363 | 20,101 | 1,206 |
| A28R | Aquia WWTF | VA0060968 | 73,093 | 4,386 |
| A31E | Colonial Beach STP | VA0026409 | 18,273 | 1,827 |
| A30E | Dahlgren WWTF | VA0026514 | 9,137 | 914 |
| A29E | Fairview Beach | MD0056464 | 1,827 | 183 |
| A30E | US NSWC-Dahlgren WWTF | VA0021067 | 6,578 | 658 |
| A31R | Purkins Corner STP | VA0070106 | 1,096 | 110 |
| | TOTALS: | | [ 5,156,169 5,198,171 ] | [ 246,635 253,753 ] |
NOTE: (1) Shenandoah Co. - North Fork Regional WWTP waste load allocations (WLAs) based on a design flow capacity of 0.75 million gallons per day (MGD). If plant is not certified to operate at 0.75 MGD design flow capacity by December 31, 2010, the WLAs will be deleted and facility removed from Significant Discharger List.
(2) Harrisonburg-Rockingham Regional S.A.-North River STP: waste load allocations (WLAs) based on a design flow capacity of 20.8 million gallons per day (MGD). If plant is not certified to operate at 20.8 MGD design flow capacity by December 31, 2011, the WLAs will decrease to TN = 194,916 lbs/yr; TP = 14,619 lbs/yr, based on a design flow capacity of 16.0 MGD.
(3) Mount Jackson STP: waste load allocations (WLAs) based on a design flow capacity of 0.7 million gallons per day (MGD). If plant is not certified to operate at 0.7 MGD design flow capacity by December 31, 2010, the WLAs will decrease to TN = 7,309 lbs/yr; TP = 548 lbs/yr, based on a design flow capacity of 0.6 MGD.
(4) Purcellville-Basham Simms STP: waste load allocations (WLAs) based on a design flow capacity of 1.5 million gallons per day (MGD). If plant is not certified to operate at 1.5 MGD design flow capacity by December 31, 2010, the WLAs will decrease to TN = 12,182 lbs/yr; TP = 914lbs/yr, based on a design flow capacity of 1.0 MGD.
(5) Loudoun Co. S.A.-Broad Run WRF: waste load allocations (WLAs) based on a design flow capacity of 11.0 million gallons per day (MGD). If plant is not certified to operate at 11.0 MGD design flow capacity by December 31, 2010, the WLAs will decrease to TN = 121,822 lbs/yr; TP = 3,046 lbs/yr, based on a design flow capacity of 10.0 MGD.
(6) Dale Service Corp.-Section 1 WWTF: waste load allocations (WLAs) based on a design flow capacity of 4.6 million gallons per day (MGD). If plant is not certified to operate at 4.6 MGD design flow capacity by December 31, 2010, the WLAs will decrease to TN = 36,547 lbs/yr; TP = 2,193 lbs/yr, based on a design flow capacity of 4.0 MGD.
(7) Dale Service Corp.-Section 8 WWTF: waste load allocations (WLAs) based on a design flow capacity of 4.6 million gallons per day (MGD). If plant is not certified to operate at 4.6 MGD design flow capacity by December 31, 2010, the WLAs will decrease to TN = 36,547 lbs/yr; TP = 2,193 lbs/yr, based on a design flow capacity of 4.0 MGD.
(8) Fauquier Co. W&SA-Vint Hill STP: waste load allocations (WLAs) based on a design flow capacity of 0.95 million gallons per day (MGD). If plant is not certified to operate at 0.95 MGD design flow capacity by December 31, 2011, the WLAs will decrease to TN = 5,482 lbs/yr; TP = 548 lbs/yr, based on a design flow capacity of 0.6 MGD.
(9) Parkins Mill STP: waste load allocations (WLAs) based on a design flow capacity of 5.0 million gallons per day (MGD). If plant is not certified to operate at 5.0 MGD design flow capacity by December 31, 2010, the WLAs will decrease to TN = 36,547 lbs/yr; TP = 2,741 lbs/yr, based on a design flow capacity of 3.0 MGD.
[ (10) Opequon WRF – waste load allocations (WLAs) based on a design flow of 12.6 MGD. If the plant is not certified to operate at 12.6 MDG design flow by December 31, 2010, the WLAs will decrease to TN = 102,331 lbs/yr; TP = 7,675 lbs/yr, based on a design flow of 8.4 MGD.
(11) (10) ] Merck-Stonewall – [ (a) on January 1, 2011, the following waste load allocations (WLAs) are effective and supersede the existing WLAs: total nitrogen of 43,835 lbs/yr and total phosphorus of 4,384 lbs/yr; (b) ] waste load allocations will be reviewed and possibly [ modified reduced ] based on "full-scale" results showing the [ optimal ] treatment capability of the 4-stage Bardenpho technology at this facility [ consistent with the level of effort by other dischargers in the region. The "full scale" evaluation will be completed by December 31, 2011, and the results submitted to DEQ for review and subsequent board action; (c) in any year when credits are available after all other exchanges within the Shenandoah-Potomac River Basin are completed in accordance with § 62.1-44.19:18 of the Code of Virginia, Merck shall acquire credits for total nitrogen discharged in excess of 14,619 lbs/yr and total phosphorus discharged in excess of 1,096 lbs/yr; and (d) the allocations are not transferable and compliance credits are only generated if discharged loads are less than the loads identified in paragraph (c) ].
VA.R. Doc. No. R07-128; Filed December 28, 2009, 11:16 a.m.