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HomeMy WebLinkAboutchapter 24 subbasin -24 Chapter 24 Cape Fear River Subbasin 03-06-24 Including: Masonboro Sound, Topsail Sound and ICWW 24.1 Subbasin Overview Subbasin 03-06-24 drains entirely to the ICWW and the Atlantic Ocean. There are large urban areas around Wilmington and many beach communities. Population is expected to grow by 110,000 people in counties with portions or all of their areas in this subbasin by 2020. Subbasin 03-06-24 at a Glance Land and Water Area Total area: 162 mi2 Land area: 142 mi2 Water area: 20 mi2 Population Statistics Pop. Density: 361 persons/mi2 Land Cover (percent) Counties Municipalities There are three individual NPDES wastewater discharge permits in this subbasin with a permitted flow of 0.1 MGD (Figure 27). Refer to Appendix VI and Chapter 30 for more information on NPDES permit holders. Issues related to compliance with NPDES permit conditions are discussed below in Section 24.3 for Impaired waters and in Section 24.4 for other waters. 2000 Est. Pop.: 58658people Forest/Wetland: 63.0% Surface Water: 17.5% Urban: 8.3% There is one registered swine operation in this subbasin. Cultivated Crop: 6.7% Pasture/ There was one benthic community sample (Figure 27 and Table 27) collected during this assessment period. Data were also collected from six DWQ ambient stations. Refer to the 2003 Cape Fear River Basinwide Assessment Report at http://www.esb.enr.state.nc.us/bar.html and Appendix IV for more information on monitoring. Managed Herbaceous: 4.5% New Hanover, Onlsow and Pender Waters in the following sections are identified by assessment unit number (AU#). This number is used to track defined segments in the water quality assessment database, 303(d) Impaired waters list and the various tables in this basin plan. The assessment unit number is a subset of the DWQ index number (classification identification number). A letter attached to the end of the AU# indicates that the assessment is smaller than the DWQ index segment. No letter indicates that the assessment unit and the DWQ index segment are the same. Carolina Beach, Holly Ridge, North Topsail Beach, Surf City, Topsail, Wilmington and Wrightsville Beach 24.2 Use Support Assessment Summary Use support ratings were assigned for waters in subbasin 03-06-24 in the aquatic life, recreation, fish consumption and water supply categories. All waters are Impaired on an evaluated basis in the fish consumption category because of fish consumption advice that applies to the entire basin. In the water supply category, all waters are Supporting on an evaluated basis based on reports from DEH regional water treatment plant consultants. Chapter 24 – Cape Fear River Subbasin 03-06-24 220 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 Atlantic Ocean 99-(3)c The waters of the Atlantic Ocean contiguous to that portion of the Cape Fear River Basin that extends from the edge of White Oak River Basin to the subbasin 17/24 boundary 38.3 Coast MilesSB ND S S-22a NCE S-23 NCE S-25 NCE S-28 NCE S-29 NCE Banks Channel 18-87-10-1a From New Topsail Inlet to Topsail Sound excluding prohibited area at Annamarina 313.5 S acresSA HQW ND ND SAPP 18-87-10-1b Prohibited area at Annamarina 4.2 S acresSA HQW ND ND IPROFecal Coliform Bacteria Marina 18-87-24-3 Entire Channel south of the Wrightsville Recreational Area 111.1 S acresSA HQW ND ND ICAOFecal Coliform Bacteria MS4 NPDES Batts Mill Creek 18-87-6 From source to Intracoastal Waterway 40.8 S acresSA HQW ND ND ICAOFecal Coliform Bacteria Unknown Beckys Creek (Bi 18-87-8a From source 0.5 miles inland Intracoastal Waterway 42.5 S acresSA HQW ND ND IPROFecal Coliform Bacteria Impervious Surface 18-87-8b From 0.5 miles inland of ICWW to Intracoastal Waterway 66.4 S acresSA HQW ND ND ICAOFecal Coliform Bacteria Impervious Surface CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 Bradley Creek 18-87-24-4-(1) From source to US Hwys 17, 74 & 76 bridge 28.8 S acresSC HQW #ND ND 18-87-24-4-(2) From US Hwy 17, 74 & 76 bridge to Intracoastal Waterway 55.9 S acresSC #ND ND Butler Creek 18-87-18 From Nixon Channel to Intracoastal Waterway 30.9 S acresSA ORW ND ND SAPP Carolina Beach 18-87-31.2 All waters beginning at a point on the northern side of Snows Cut and running directly east across the Intracoastal Waterway to a point on the eastern side, thence follow 102.8 S acresSB ND NDBA731 NCE Cedar Snag Cree 18-87-17 From Green Channel to Intracoastal Waterway 3.2 S acresSA ORW ND ND SAPP County Line Bra 18-87-6-1 From source to Batts Mill Creek 1.0 S acresSA HQW ND ND ICACFecal Coliform Bacteria Unknown Cypress Branch 18-87-6-2 From source to Batts Mill Creek 1.0 S acresSA HQW ND ND ICACFecal Coliform Bacteria Unknown CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 Everett Bay 18-87-2 Entire Bay excluding that portion in King Creek Restricted Area 240.6 S acresSA ORW ND ND ICAOFecal Coliform Bacteria Everett Creek 18-87-29 From source to Intracoastal Waterway 0.7 S acresSA HQW ND ND IPROFecal Coliform Bacteria MS4 NPDES Futch Creek 18-87-19a From source to 0.35 miles inland of Intracoastal Waterway 13.7 S acresSA HQW ND ND IPROFecal Coliform Bacteria Impervious Surface 18-87-19b From 0.35 miles inland of Intracoastal Waterway to ICWW 14.3 S acresSA HQW ND ND ICAOFecal Coliform Bacteria Impervious Surface Green Channel 18-87-16 From Rich Inlet to Intracoastal Waterway 111.5 S acresSA ORW ND ND SAPP Hewletts Creek 18-87-26a From source to 0.5 miles inland of Intracoastal Waterway 78.3 S acresSA HQW S ND IPRO BB299 /2003M Fecal Coliform Bacteria MS4 NPDES 18-87-26b From 0.5 miles inland of ICWW to Intracoastal Waterway 19.9 S acresSA HQW ND ND ICAOFecal Coliform Bacteria MS4 NPDES Howard Channel 18-87-13 From Old Topsail Inlet to Intracoastal Waterway 38.3 S acresSA ORW ND ND SAPP CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 Howe Creek 18-87-23 From source to Intracoastal Waterway 28.6 S acresSA ORW ND ND IPROFecal Coliform Bacteria Intracaostal Wat 18-87-(5.5) From Morris Landing to the eastern mouth of Old Topsail Creek 159.6 S acresSA HQW ND S ICAOS-52 NCE S-53 NCE S-54 NCE Fecal Coliform Bacteria Impervious Surface CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 Intracoastal Wat 18-87 From southern edge of White Oak River Basin to Morris Landing 76.2 S acresSA ORW S S ICAOBA723 NCE BA723 NCE S-55 NCE Fecal Coliform Bacteria Unknown 18-87-(11.5) From the eastern mouth of Old Topsail Creek to the western mouth of Howe Creek 112.9 S acresSA ORW ND S ICAOS-50 NCE S-51 NCE Fecal Coliform Bacteria Unknown 18-87-(23.5)a Approved area south of Wrightsville Recreation area and east of ICWW 52.8 S acresSA HQW ND S SAPPS-48 NCE 18-87-(23.5)b Prohibited area north of Wrightsville Reacreation area 63.1 S acresSA HQW ND ND IPROFecal Coliform Bacteria Unknown 18-87-(23.5)c Conditional area south of Wrightsville Recreation area and west of ICWW. 70.4 S acresSA HQW I S ICAOBA728 CE Low DO 11.4 BA728 NCE Low Dissolved Oxygen MS4 NPDES Fecal Coliform Bacteria Unknown Conditional area south of Wrightsville Recreation area and west of ICWW. 70.4 S acresSA HQW I S ICAOBA728 CE Low DO 11.4 BA728 NCE Low Dissolved Oxygen MS4 NPDES Fecal Coliform Bacteria Unknown John Creek 18-87-30 From source to Intracoastal Waterway 5.0 S acresSA ORW ND ND SAPP CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 King Creek Restr 18-87-4 Inside a line beginning at a point on the mainland and running due south 100 yards to reflector buoy #43 in the Intracoastal Waterway, thence along the south side of the 165.7 S acresSC Sw HQ ND ND Long Point Chan 18-87-15 From Old Topsail Inlet to Intracoastal Waterway 16.0 S acresSA ORW ND ND SAPP Masonboro Chan 18-87-27 From Masonboro Inlet to Intracoastal Waterway 216.4 S acresSA ORW ND ND SAPP Masonboro Soun 18-87-25.7a East of ICWW 285.3 S acresSA ORW ND S SAPPS-47 NCE 18-87-25.7b Three prohibited areas inland of ICWW 99.5 S acresSA ORW ND ND IPROFecal Coliform Bacteria Impervious Surface Fecal Coliform Bacteria Marina 18-87-25.7c West of ICWW 215.9 S acresSA ORW S S ICAOBA730 NCE BA730 NCE Fecal Coliform Bacteria Impervious Surface Fecal Coliform Bacteria Marina 18-87-25.7d Prohibited area at mouth of Whiskey Creek 64.3 S acresSA ORW ND ND IPROFecal Coliform Bacteria MS4 NPDES CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 Mill Creek (Betts 18-87-14 From source to Intracoastal Waterway 18.2 S acresSA HQW ND ND IPROFecal Coliform Bacteria Impervious Surface Mullett Run 18-87-9-1 From source to Virginia Creek 7.5 S acresSA HQW ND ND IPROFecal Coliform Bacteria Impervious Surface Nixon Channel 18-87-20 From Rich Inlet to Intracoastal Waterway 181.8 S acresSA ORW ND ND SAPP Nixons Creek 18-87-11 From source to Intracoastal Waterway 5.8 S acresSA HQW ND ND ICAOFecal Coliform Bacteria Marina Old Mill Creek 18-87-7 From source to Intracoastal Waterway 0.1 S acresSA HQW ND ND ICAOFecal Coliform Bacteria Unknown Old Topsail Cree 18-87-12a From source to 0.5 miles inland of ICWW to Intracoastal Waterway 16.5 S acresSA HQW ND ND IPROFecal Coliform Bacteria Impervious Surface 18-87-12b From 0.5 miles inland of Intracoastal Waterway to ICWW 12.4 S acresSA HQW ND ND ICAOFecal Coliform Bacteria Impervious Surface CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 Pages Creek 18-87-22a From source to 0.5 miles inland of Intracoastal Waterway 48.4 S acresSA HQW ND ND IPROFecal Coliform Bacteria 18-87-22b From 0.5 miles inland of ICWW to Intracoastal Waterway 28.5 S acresSA HQW ND ND ICAOFecal Coliform Bacteria Shinn Creek 18-87-25 From Masonboro Inlet to Intracoastal Waterway 87.0 S acresSA HQW ND ND SAPP Snows Cut 18-87-31.5 From Carolina Beach Yacht Basin to Cape Fear River 60.5 S acresSC ND ND Stump Sound 18-87-3 Entire Sound excluding that portion in King Creek Restricted Area 87.3 S acresSA ORW ND ND ICAOFecal Coliform Bacteria Unknown Stump Sound O 18-87-0.5 All waters between the s edge of the White Oak RB to the western end of Permuda Is. exclusive of the restricted area 939.9 S acresSA ORW ND ND ICAOFecal Coliform Bacteria Unknown CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 Topsail Sound 18-87-10a Entire Sound south of ICWW 1,190.7 S acresSA HQW ND ND SAPP 18-87-10b Prohibited areas at Queens Grant and Hwy 210 Bridge 56.2 S acresSA HQW ND ND IPROFecal Coliform Bacteria Impervious Surface 18-87-10c Entire Sound north of ICWW 1,144.5 S acresSA HQW ND ND ICAOFecal Coliform Bacteria Impervious Surface 18-87-10d Conditional areas at mouth of Batts Mill Creek and at Hwy 210 Bridge 12.7 S acresSA HQW ND ND ICACFecal Coliform Bacteria Marina CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 Topsail Sound an 18-87-11.7a South of ICWW 444.8 S acresSA ORW ND ND SAPP 18-87-11.7b Prohibited area north of ICWW 2.1 S acresSA ORW ND ND IPROFecal Coliform Bacteria 18-87-11.7c North of ICWW 272.5 S acresSA ORW S ND ICAOBA727 NCE BA727 NCE Fecal Coliform Bacteria Marina 18-87-11.7d Prohibited area on northside of ICWW 2.7 S acresSA ORW ND ND IPROFecal Coliform Bacteria Marina 18-87-11.7e Prohibited area at mouth of Mill Creek 2.7 S acresSA ORW ND ND IPROFecal Coliform Bacteria 18-87-11.7f Prohibited area at Figure Eight Island Marina 6.8 S acresSA ORW ND ND IPROFecal Coliform Bacteria Turkey Creek 18-87-1a From source to 0.25 miles inland of Intracoastal Waterway to ICWW 79.5 S acresSA ORW ND ND ICACFecal Coliform Bacteria Unknown 18-87-1b From 0.25 miles inland of ICWW to Intracoastal Waterway 59.6 S acresSA ORW ND ND ICAOFecal Coliform Bacteria Unknown CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 Virginia Creek 18-87-9a From source to 0.75 miles inland of Intracoastal Waterway 23.5 S acresSA HQW ND ND IPROFecal Coliform Bacteria Impervious Surface 18-87-9b From 0.75 miles inland of ICWW to Intracoastal Waterway 73.6 S acresSA HQW ND ND ICAOFecal Coliform Bacteria Impervious Surface Whiskey Creek ( 18-87-28 From source to Intracoastal Waterway 13.0 S acresSA HQW ND ND IPROFecal Coliform Bacteria MS4 NPDES Wrightsville Recr 18-87-24 In any waters within a line beginning at a point on the mainland along the Intracoastal Waterway 1400 feet north of the U.S. Hwy. 74-76 bridge extending directly across t 478.7 S acresSB #S NDBA729 NCE BA729 NCE CAPE FEAR Subbasin 03-06-24 AU Number Description Length/AreaClassification CAPE FEAR 03-06-24 AL Rating REC RatingStation Year/ ParameterResult % Exc Aquatic Life Assessment ResultStation Recreation Assessment Stressors Sources Subbasin SH Rating Shellfish Harvesting GA Status Table 27 AL - Aquatic Life BF - Fish Community Survey E - Excellent S - Supporting, I - Impaired REC - Recreation BB - Benthic Community Survey G - Good NR - Not Rated BA - Ambient Monitoring Site GF - Good-Fair NR*- Not Rated for Recreation (screening criteria exceeded) BL- Lake Monitoring F - Fair ND-No Data Collected to make assessment S- DEH RECMON P - Poor NI - Not Impaired CE-Criteria Exceeded > 10% and more than 10 samples Miles/Acres S- Severe Stress NCE-No Criteria Exceeded FW- Fresh Water M-Moderate Stress S- Salt Water N- Natural GA Status- DEH SS Growing Area Status Results Aquatic Life Rating Summary S 1,121.6 S acresm I 70.4 S acresm ND 7,116.8 S acres ND 38.3 Coast Mile Recreation Rating Summary 973.1 S acresSm 38.3 Coast MileSm 7,335.7 S acresND Fish Consumption Rating Summary 8,308.8 S acresIe 38.3 Coast MileIe CAPE FEAR Subbasin 03-06-24 There were 1,192 estuarine acres (14.3 percent) monitored during this assessment period in the aquatic life category with 70.4 acres (<1 percent) Impaired. There were 973.1 estuarine acres (11.7 percent) monitored during this assessment period in the recreation category with no Impaired acreage. There were 7,416.3 estuarine acres (100 percent) monitored during this assessment period in the shellfish harvesting category with 4,439.1 acres (59.8 percent) Impaired. 24.3 Status and Recommendations of Previously and Newly Impaired Waters The following waters were either identified as Impaired in the previous basin plan (2000) or are newly Impaired based on recent data. If previously identified as Impaired, the water will either remain on the state’s 303(d) list or will be delisted based on recent data showing water quality improvements. If the water is newly Impaired, it will likely be placed on the 2006 303(d) list. The current status and recommendations for addressing these waters are presented below, and each is identified by an assessment unit number (AU#). Refer to the overview for more information on AUs. Information regarding 303(d) listing and reporting methodology is presented in Appendix VII. For Impaired Class SA waters presented below, refer to Chapter 27 for more information and recommendations on shellfish harvesting use support and DEH SS growing area classifications. All waters identified as Impaired in the shellfish harvesting category will be added to the 303(d) list of Impaired waters. TMDLs (Chapter 35) will be developed for identified stressors within 8- 13 years of listing. 24.3.1 Banks Channel [AU# 18-87-10-1b and 18-87-24-3] Current Status Banks Channel [18-87-10-1b] Prohibited area at Annamarina (4.2 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as prohibited in growing area B-7. Banks Channel [18-87-24.3] south of Wrightsville Beach Recreational area (111.1 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as conditionally approved-open in growing area B-8. These segments of Banks Channel will be added to the 303(d) list of Impaired waters. 24.3.2 Batts Mill Creek [AU# 18-87-6], County Line Branch [AU# 18-87-6-1] and Cypress Branch [AU# 18-87-6-2] Current Status Batts Mill Creek from source to the ICWW (40.8 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as conditionally approved-open in growing area B- 9. County Line Branch from source to Batts Mill Creek (1 acres) and Cypress Branch from source to Batts Mill Creek (1 acre) are Impaired for shellfish harvesting because these segments are classified by DEH SS as conditionally approved-closed in growing area B-9. These segments of Batts Mill Creek will be added to the 303(d) list of Impaired waters. Chapter 24 – Cape Fear River Subbasin 03-06-24 234 24.3.3 Beckys Creek [AU# 18-87-8a and b] Current Status Beckys Creek [18-87-8a and b] from source to the ICWW (108.9 acres) is Impaired for shellfish harvesting because these segments are classified by DEH SS as prohibited and conditionally approved-open in growing area B-8. Beckys Creek will be added to the 303(d) list of Impaired waters. 24.3.4 Everett Bay [AU# 18-87-2] Current Status Everett Bay (240.6 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as conditionally approved-open in growing area B-9. Everett Bay will be added to the 303(d) list of Impaired waters. 24.3.5 Everett Creek [AU# 18-87-29] Current Status Everett Creek from source to ICWW (0.7 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as prohibited in growing area B-5. Everett Creek will be added to the 303(d) list of Impaired waters. 24.3.6 Futch Creek [AU# 18-87-19a and b] Current Status Futch Creek [18-87-19a and b] from source to the ICWW (28 acres) is Impaired for shellfish harvesting because these segments are classified by DEH SS as prohibited and conditionally approved-open in growing area B-8. These segments of Futch Creek will be added to the 303(d) list of Impaired waters. 24.3.7 Hewletts Creek [AU# 18-87-26a and b] Current Status Hewletts Creek [18-87-26a and b] from source to the ICWW (98.2 acres) is Impaired for shellfish harvesting because these segments are classified by DEH SS as prohibited and conditionally approved-open in growing area B-6. Segment 18-87-26a (78.3 acres) is Supporting aquatic life because of a Moderate benthic community rating at site BB299. This upper portion of Hewletts Creek had good snag and root mat habitats, and some intolerant species were noted at the site. These segments of Hewletts Creek will be added to the 303(d) list of Impaired waters. 24.3.8 Howe Creek [AU# 18-87-23] Current Status Howe Creek from source to ICWW (28.6 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as prohibited in growing area B-7. Howe Creek will be added to the 303(d) list of Impaired waters. Chapter 24 – Cape Fear River Subbasin 03-06-24 235 24.3.9 Intracoastal Waterway (ICWW) [AU# 18-87, 18-87-(5.5), (11.5), (23.5)a, b and c] Current Status The ICWW [18-87] in DEH growing area B-9 (76.2 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as conditionally approved-open in growing area B- 9. This segment is supporting aquatic life and recreation because no criteria were exceeded at sites BA 723 and S-55. This segment will be added to the 303(d) list of Impaired waters. The ICWW [18-87-(5.5)] in DEH growing area B-8 (159.6 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as conditionally approved-open in growing area B-8. This segment is supporting recreation because no criteria were exceeded at sites S-52, S-53 and S-54. This segment will be added to the 303(d) list of Impaired waters. The ICWW [18-87-(11.5) and (23.5)b] in DEH growing area B-7 (176 acres) is Impaired for shellfish harvesting because these segments are classified by DEH SS as prohibited and conditionally approved-open in growing area B-7. Segment 18-87-(11.5) is supporting recreation because no criteria were exceeded at sites S-50 and S-51. These segments will be added to the 303(d) list of Impaired waters. The ICWW [18-87-(23.5)a] in DEH growing area B-7 (52.8 acres) is Supporting recreation and shellfish harvesting because this segment is classified by DEH SS as approved and because no criteria were exceeded at site S-48. The ICWW [18-87-(23.5)c] in DEH growing area B-7 (70.4 acres) is Impaired for aquatic life and shellfish harvesting because dissolved oxygen violated water quality standards in 11 percent of samples at site BA728, and this segment is classified by DEH SS as conditionally approved- open. Site BA728 is at the mouth of Howe Creek in the ICWW. There is extensive development occurring in the headwaters of Howe Creek in and around Wilmington. This segment will be added to the 303(d) list of Impaired waters. DWQ will work with Wilmington and New Hanover County to identify potential sources of bacteria and oxygen-consuming materials. 24.3.10 Masonboro Sound ORW Area (ICWW) [AU# 18-87-25.7a, b, c and d] Current Status Masonboro Sound [18-87-25.7a] in DEH growing area B-5 and B-6 (285.3 acres) is Supporting recreation and shellfish harvesting because this segment is classified by DEH SS as approved and because no criteria were exceeded at site S-47. Masonboro Sound [18-87-25.7b, c and d] in DEH growing area B-5 and B-6 (379.7 acres) is Impaired for shellfish harvesting because these segments are classified by DEH SS as prohibited and conditionally approved-open. Segment 18-87-25.7c is Supporting aquatic life because no criteria were exceeded at sites BA730. These segments will be added to the 303(d) list of Impaired waters. Chapter 24 – Cape Fear River Subbasin 03-06-24 236 24.3.11 Mill Creek [AU# 18-87-14] Current Status Mill Creek from source to ICWW (18.2 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as prohibited in growing area B-8. Mill Creek will be added to the 303(d) list of Impaired waters. 24.3.12 Virginia Creek [18-87-9a and b] and Mullett Run [AU# 18-87-9-1] Current Status Virginia Creek and Mullett Run from source to ICWW (104.6 acres) are Impaired for shellfish harvesting because these segments are classified by DEH SS as prohibited and conditionally approved-open in growing area B-8. Both creeks will be added to the 303(d) list of Impaired waters. 24.3.13 Nixons Creek [AU# 18-87-11] Current Status Nixons Creek from source to ICWW (5.8 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as conditionally approved-open in growing area B-8. Nixons Creek will be added to the 303(d) list of Impaired waters. 24.3.14 Old Mill Creek [AU# 18-87-7] Current Status Old Mill Creek from source to ICWW (0.1 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as conditionally approved-open in growing area B-9. Old Mill Creek will be added to the 303(d) list of Impaired waters. 24.3.15 Old Topsail Creek [AU# 18-87-12a and b] Current Status Old Topsail Creek from source to the ICWW (28.9 acres) is Impaired for shellfish harvesting because these segments are classified by DEH SS as prohibited and conditionally approved-open in growing area B-8. These segments of Old Topsail Creek will be added to the 303(d) list of Impaired waters. 24.3.16 Pages Creek [AU# 18-87-22a and b] Current Status Pages Creek from source to the ICWW (76.9 acres) is Impaired for shellfish harvesting because these segments are classified by DEH SS as prohibited and conditionally approved-open in growing area B-7. These segments of Pages Creek will be added to the 303(d) list of Impaired waters. Chapter 24 – Cape Fear River Subbasin 03-06-24 237 24.3.17 Stump Sound [18-87-3] and Stump Sound ORW Area [AU# 18-87-0.5] Current Status Stump Sound and Stump Sound ORW Area from the White Oak River Basin to Permuda Island (1,027.2 acres) are Impaired for shellfish harvesting because these segments are classified by DEH SS as conditionally approved-open in growing area B-8. Both segments will be added to the 303(d) list of Impaired waters. 24.3.18 Topsail Sound [AU# 18-87-10a, b, c and d] Current Status Topsail Sound [18-87-10b, c, and d] areas north of the ICWW and around Queens Grant and the Hwy 210 bridge (1,213.4 acres) are Impaired for shellfish harvesting because these segments are classified by DEH SS as prohibited, conditionally approved-open and conditionally approved- closed in growing areas B-8 and B-9. These segments will be added to the 303(d) list of Impaired waters. Segment 18-87-10a (1,190.7 acres) south of the ICWW is Supporting shellfish harvesting because this area is classified by DEH SS as approved. 24.3.19 Topsail Sound and Middle Sound ORW Area [AU# 18-87-11.7a, b, c, d, e and f] Current Status Topsail Sound [18-87-11.7b, d, e and f] areas north of the ICWW and around the Figure Eight Island Marina (14.3 acres) are Impaired for shellfish harvesting because these segments are classified by DEH SS as prohibited and conditionally approved-open in growing areas B-7 and B-8. Segment 18-87-11.7c (272.5 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as conditionally approved-open. This segment will be added to the 303(d) list of Impaired waters. This segment is Supporting aquatic life because no criteria were exceeded at site BA727. Segment 18-87-11.7a (444.8 acres) south of the ICWW is Supporting shellfish harvesting because this area is classified by DEH SS as approved. 24.3.20 Turkey Creek [AU# 18-87-1a and b] Current Status Turkey Creek from source to the ICWW (139.1 acres) is Impaired for shellfish harvesting because these segments are classified by DEH SS as conditionally approved-open and conditionally approved-closed in growing area B-9. These segments of Turkey Creek will be added to the 303(d) list of Impaired waters. 24.3.21 Whiskey Creek [AU# 18-87-28] Current Status Whiskey Creek from source to ICWW (13 acres) is Impaired for shellfish harvesting because this segment is classified by DEH SS as prohibited in growing area B-6. Whiskey Creek will be added to the 303(d) list of Impaired waters. Chapter 24 – Cape Fear River Subbasin 03-06-24 238 24.4 Status and Recommendations for Waters with Noted Impacts The surface waters discussed in this section are not Impaired. However, notable water quality problems and concerns have been documented for some waters based on this assessment. While these waters are not Impaired, attention and resources should be focused on these waters to prevent additional degradation or facilitate water quality improvement. Waters in the following section are identified by assessment unit number (AU#). Refer to the overview for more information on AUs. 24.4.1 Kings Creek Restricted Area [AU# 18-87-4] Current Status and 2005 Recommendations Kings Creek Restricted Area from source to ICWW (165.7 acres) is Not Rated on an evaluated basis for recreation because Holly Ridge WWTP (NC0025859) had significant violations of fecal coliform bacteria permit limits. This creek is Not Rated for aquatic life because the WWTP also had five whole effluent toxicity test failures that may have adversely impacted aquatic life during the last two years of the assessment period. The NPDES compliance process will be used to address the significant permit violations noted above. Chapter 24 – Cape Fear River Subbasin 03-06-24 239