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HomeMy WebLinkAbout20070395 Ver 1_CAMA Application_20070330F '~ !' ~ - ~ ..~. '~ ~ Kimley-Horn ~ ~ _. ; z o s~;te 300 ~~ _ __ andA$soclate$, inc. ? ~ ~ ~i„~ 501lndependenceParkway - Chesapeake, VA 23320 ~. sr i~; t, ~ / TEL 757 548 7300 FAX 757 548 7301 Transmittal Date: March 28, 2007 Job Number: 116250000 Project Name: Washington Square Retail Development, Beaufort County (DWQ #07-0395) To: Ms. Cvndi Karoly. Supervisor. 401 Permitting Unit We are sending these by ^ U.S. Mail ^ Other We are sending you ® Attached ^ Shop drawings ^ Other ~pt;ti'~Ft ® FedEx ^ Hand Delivery ^ Under separate cover via the following items: ^ Prints/Plans ^ Samples ^ Specifications ^ Change Orders C,'o ies Uate No. Description 5 2/2007 404 Permit Application & Permit Support Document 1 3/2/07 Check for $475.00 made out to NCDWQ These are transmitted as checked below: ® For your use ^ Approved as submitted ^ Resubmit ^ Copies for approval ^ As requested ^ Approved as noted ^ Submi[ ^ Copies for distribution ^ For review and comment ^ Returned for corrections ^ Return ^ Corrected prints Remarks: Please find attached five (~) copies of the complete set of signed permit application and permit support document for the above referenced project, along with the appropriate permit application fee. Please contact me at 757-548-7324 should you require any additional information. Copy to: File Signed: Dan Redgate w i 0 1 1 1 1 1 1 ^ Department of the Army Permit Application Washington Square Retail Development US264 Bypass Washington, North Carolina Prepared for: MAG II Grimes Farm, LLC C~ Kiuiley-Hom and Associates, Inc. February 2007 ~ Kimley-Horn ^ ~ ~ and Associates, Inc. ' ~y} _ ', +a :. ~ •y 'r7rc`( ~ v' Ll1l. ti~;,.i:; ,,,, fJ 1 r 1 ~ Kimley-Horn ~ and Associates, Inc. February 6, 2007 Tracey L. Wheeler Regulatory Specialist US Army Corps of Engineers Washington Regulatory Field Office 107 Union Drive, Suite 202, Washington, NC 27889 ^ Suite 300 5011ndependence Parkway Chesapeake, Virginia 23320 Re: Washington Square Retail Development, Washington, NC; Application for Department of the Army Permit Dear Ms. Wheeler: Enclosed please find a Department of the Army Permit Application (ENG Form 4345) and associated Environmental Support Document for the filling of 0.22 acre of palustrine forested wetland, 0.62 acre of waters of the US and 0.35 acre of isolated palustrine forested wetland for the proposed Washington Square Retail Development in Washington, North Carolina. The application is submitted on behalf of MAG II Grimes Farm, LLC, developers of Washington Square. The proposed development will consist of a f27.4-acre grocery anchored retail center having approximately 150,000 square feet (sf) of retail space, and five commercial outparcels. A permit pre-application coordination meeting was held on June 30, 2006 and attended by Kyle Barnes (NCDWQ) and yourself. On that day, we discussed site conditions, the proposed retail concept plan and potential permit issues, and conducted a site visit. Due to recent local flooding events, stormwater management was identified as one of the primary concerns for permit issuance. Since this meeting, the applicant has performed a preliminary stormwater analysis that has addressed these concerns by recommending stormwater management alternatives. A study report is included in Appendix D of the Environmental Support Document that accompanies the permit application. Documentation on methods of avoidance and minimization are included in the application. Although we anticipate that the project will qualify for an individual permit from the US Army Corps of Engineers, a majority of the unavoidable jurisdictional impacts resulting from this project would be to an agricultural ditch that exhibits criteria consistent with waters of the US. During the pre-application coordination, it was established that compensatory mitigation would not be necessary for the impacts to the jurisdictional portions of the agricultural ditch. Compensation for other jurisdictional wetland impacts will be provided through payment into the NCDENR Wetland Trust Fund. ^ TEL 757 548 7300 FAX 757 548 7301 ^ ~ ^ Kimley-Horn ~ and Associates, Inc. Ms. Tracey Wheeler, USACE February 6, 2007 Page 2 We trust you will find this application thorough. Should you require any additional information, please contact me at 757-548-7324. Thank you for your assistance during the pre-application coordination, and we look forward to working with you on this permit application. 1 1 1 r 1 1 Sincerely, KIMLEY-HORN AND ASSOCIATES ~r--- Daniel Redgate Encl: ENG Form 4345 Environmental Support Document Appendices cc: William L Gulliford III, MAG II Grimes Farm, LLC 1 TABLE OF CONTENTS DEPARTMENT OF THE ARMY PERMIT APPLICATION WASHINGTON SQUARE RETAIL DEVELOPMENT WASHINGTON, NORTH CAROLINA Department of the Army Permit Application (ENG FORM 4345) ENG Fonn 4345 Block 24 -Addresses of Adjoining Property Owners >~ Environmental Support Document Location, Project and Site Description Project Purpose and Need Projected Impacts to Wetlands and Waters of the United States Alternatives Considered Protected Species, Cultural Resources, Riparian Buffer and Floodplain Preliminary Stormwater Analysis Proposed Method of Compensation Appendix A -Permit Figures 1 Appendix B -Wetlands Delineation Appendix C -Agency Coordination Appendix D -Preliminary Stormwater Analysis Report D`~-o3g5 _~ A~LICATI~N FAR ~EYARTMENT t1F THE ARMY rERMIT ~M~ APF'R~VAL Nt. X71•-~~~3 /33 CFR 325/ Expires December 31, 2004 The Public burden for this collection of information is sestimated to average 10 hours per response, ahhough the majority of applications should require 5 hours or less. This includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewirq the collection of information. Send comments regarding this burden estin-ate or any other aspect of this collection of information, including suggestions for reducing this burden, to Department of Defense, Washington Headquarters Service Directorate of Information ' Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302; and to the Office of Management and Budget, Paperwork Reduction Project (0710.00031. Washington, DC 20503. ResponderKs should be aware that notwkhstanding any other provision of law, rw person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. Please DO NOT RETURN your form to either of those addresses. Completed applicatans must be submitted to the District Engineer having jurisdiction over the location of the proposed activity. PRIVACY ACT STATEMENT Authorities: Rivers and Harbors Act, Section 10, 33 USC 403; Clean Water Act, Section 404, 33 USC 1344; Merino Protection ,Research and Sanctuaries Act, 33 USC 1413, Section 103. Principal Purpose: Infomtation provided on this form wilt bs used in evaluating the application for a permit. Routine Usss: This information may be shared wkh the Department of Justice end other federal, state, and local government agencies. Submission of requested information is voluntary, however, if information is not provided the permit application cannot be evaluated nor can a permit be issued. One set of original drawings or good reproducible copies which show the location and character of the proposed activity must be attached to this application (see sample drawings and instructions) and be submitted to the D~trict Engineer having jurisdiction over the bcation of the proposed activity. An application that is not completed in full will be returned. ITEMS f THRU 4 TO BE F/LLED BY HE 1. APPLICATION NO. 2. FIELD OFFICE CODE 3. DATE RECEIVED 4. DATE APPLICATION COMPLETED t r //TFINS RFI nW TA RF F//!FA RV dPP/ M_M/71 5. APPLICANT'S NAME 8. AUTHORIZED AGENT'S NAME AND TITLE /en agent is not required) William I. Gulliford, III Daniel Redgate 6. APPLICANT'S ADDRESS 9. AGENT'S ADDRESS MAG II Grimes Farm, L.L.C., 1021 Oak Stree 501 Independence Parkway, Suite 300 Jacksonville, Florida 32205 Chesapeake, Virginia 23320 7.. APPLICANT'S PHONE NOS. W/AREA CODE 10. AGENT'S PHONE NOS. W AREA CODE a. Residence a. Residence b. Business (904) 384-6260 b. Business (757) 548-7300 11. STATEMENT OF AUTHORIZATION I hereby authorize, Daniel Redgate to act in my behalf as my agent in the processing of this application and to furnish, upon request, supplemental information in support of this permit application. ~ -"1 ++ 1. ~ t~eti ~ , Z~ DATE NAME, LOCATION AND DESCRIPTION OF PROJECT OR ACTIVITY 12. PROJECT NAME OR TITLE rsee:rauu~rons. .! Washington.Square Retail Development RECEIVED i 1 13, NAME OF WATERBODY, IF KNOWN arevnx~; Cherry Run 15. LOCATION OF PROJECT Beaufort County North Carolina COUNTY STATE 14. PROJECT STREET ADDRESS rrepp~~nre~ 16. OTHER LOCATION DESCRIPTIONS, IF KNOWN, rseeinstrucYionsl Lon=35 33 03;Lat=77 03 47; SE quadrant of intersection US264 Bypass & Whispering Pines Rd 17. DIRECTIONS TO THE SITE From I95, take US264 east to Washington; turn left on US264 Bypass (W 15th St); cross Whispering Pines Road, site is on right. From the north, take US17 south to Washington; turn right on US264 Bypass (W 15th St), site is on the left. 4 u EDITION OF FEB 94 IS OBSOLETE. (Proponent: CECW-ORf 18. Nature of Activity (Description of project, include ap Jeaturesl Please see Section 1 of attached Environmental Support Document. 19. PfOJBCt PurpOSe (Describe the reason or purpose of the project, see instructions! Please see Section 2 of attached Environmental Support Document. 1 USE BLOCKS 20-22 IF DREDGED AND/OR FILL MATERIAL IS TO BE DISCHARGED 20. Reasonls) for Discharge Preparation of site for building pads and parking lots. 21 . Typels) of Material Being Discharged and the Amount of Each Tvoe in Cubic Yards 6,750 cubic yards (CY) of a mixture of clean fill and sand. 22. Surface Area in Acres of Wetlands or Other Waters Filled Iseeinsrrucrionsl Please see Section 3 of attached Environmental Support Document. 23. Is Any Portion of the Work Already Complete? Yes Q No " IF YES. DESCRIBE THE COMPLETED WORK 24. Addresses of Adjoining Property Owners, Lessees, Etc., Whose Property Adjoins the Waterbody (If more than can be entered here, please attach a supplemental list). Please see attached map and property owner list labeled Block 24. 25. List of Other Certifications or Approvals/Denials Received from other Federal, State or Local Agencies for Work Described in This Application. i 1 AGENCY TYPE APPROVAL` IDENTIFICATION NUMBER DATE APPLIED DATE APPROVED DATE DENIED 'Would include but is not restricted to zoning, building and flood plain permits 26. Application is hereby made for a permit or permits to authorize the work described in this application. certify that the information in this application is complete and accurate. I further certify that I possess the 't to under the described herein or am acting as the duly authorized agent of the applicant. /~ `_ C Cam" 2/6/07 SIGNATURE OF APPLICANT DATE SIGNATURE OF AGENT DATE The application must be signed by the person who desires to undertake the proposed activity (applicant) or it may be signed by a duly authorized agent if the statement in block 1 1 has been filled out and signed. 18 U.S.C. Section 1001 provides that: Whoever, in any manner within the jurisdiction of any department or agency of the United States knowingly and willfully falsifies, conceals, or covers up any trick, scheme, or disguises a material fact or makes any false, fictitious or fraudulent statements or representations or makes or uses any false writing or document knowing same to contain any false, fictitious or fraudulent statements or entry, shall be fined not more than S 10,000 or imprisoned not more than five years or both. 1 BLOCK 24. PROPERTY OWNER'S ADDRESSES APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT WASHINGTON SQUARE RETAIL DEVELOPMENT WASHINGTON, NORTH CAROLINA Current Property Owner's Address: William I. Gulliford, III MAG II Grimes Farm, L.L.C. Midland Development Group, Inc. 1021 Oak Street Jacksonville, FL 32205 Adjacent Property Owner's Addresses: 1. Lily G. Grimes -changed to Junius D Grimes III and Samuel G. Grimes 100 Summer Haven Lane Washington, NC 27889 2. Grimes Heirs -Junius D. Grimes III and Samuel G. Grimes 100 Summer Haven Lane Washington, NC 27889 3. Diversified Realty Corp. PO Box 228042 Cleveland, OH 44122 4. Diversified Realty Corp. - Wal-Mart Real Estate Business Trust 1301 SE 10th Street Bentonville, AR 72716 5. County School Board John Cotton Tayloe School 321 Smaw Road Washington, NC 27889 9. Robert & Carole Hill 810 River Road Washington, NC 27889 10. Robert & Carole Hill 810 River Road Washington, NC 27889 11. Lefar Associates LLC 623 River Road Washington, NC 27889 12. State Employees Credit Union Attn: Rex Spivey PO Box 26807 Raleigh, NC 27611 Note: Address numbering matches attached parcel map. 6. Washington Housing Authority PO Box 1046 Washington, NC 27889 7. Beaufort County Developmental Center 1534 West 5th Street Washington, NC 27889 8. Metropolitan Housing and Development Corp. PO Box 1706 Washington, NC 27889 1 1 1 1 ENVIRONMENTAL SUPPORT DOCUMENT WASHINGTON SQUARE RETAIL DEVELOPMENT ~ CITY OF WASHINGTON, NC 1. Location, Project and Site Description a. Project location. The property is located at the southeastern quadrant of the intersection of 1 the West Fifteenth Street Extension (also referred to as the US Highway 264 Bypass) and Whispering Pines Road (SR1404) in the City of Washington, North Carolina. Figure 1 shows the location of the project site on the USGS 7.5-minute topographic quadrangle for Washington, NC. The site is located in a relatively level portion of land in the drainage divide between Cherry Run to the west and Jacks Creek to the east. From preliminary investigations of site drainage, it appears that all or a majority of the site drains to the northwest to Cherry Run, a Class C stream, which flows to Tranters Creek and 1 subsequently the Tar River. This drainage area is within the USGS Hydrologic Unit Code (HUG) 03020103, and within the Tar6 subbasin (03-03-06) of the Tar River Basin. ii 1 b. Project description. Midland Acquisition Group II, LLC (MAG II) plans to construct a retail center on an approximately 33.22-acre parcel with proposed entrance roads to both Whispering Pines Road and US Hwy 264 Bypass. The proposed development will consist of a f27.4-acre grocery anchored retail center having approximately 150,000 square feet (sf) of retail space. Customer parking for approximately 800 vehicles is planned to serve the center. The remainder of the development will consist of commercial outparcels that are proposed to be subdivided into five fee simple lots. Figure 2 is the preliminary concept plan for the proposed retail development center. As shown in Figure 2, the proposed concept plan would involve impacts to wetlands and waters of the US. Construction of the project will require the filling of a total of 0.22 acre of palustrine forested wetlands and 0.62 acre of agricultural ditch classified as "waters of the US" by the US Army Corps of Engineers (USAGE). The project will also require the filling of 0.35 acre of isolated palustrine forested wetlands. A survey of the wetland delineation is included in Appendix B along with wetland data forms. A detailed discussion of the wetlands and waters of the US located on the subject parcel occurs in the following report section. Based on comments provided during pre-application coordination, a preliminary drainage study was conducted to evaluate the ability of a proposed stormwater management system for the development to comply with Tar-Pamlico Stormwater Regulations, the North Carolina 401 Water Quality Certification standards and the NC State Stormwater Permit. The drainage analysis addressed two primary issues. First, the analysis established that the site does not receive a significant amount of offsite stormwater flow. Second, using the preliminary concept plan for the retail center, the results of the study indicate the appropriate stormwater treatment can be provided by a series of Best Management Practices (BMPs) established on site or by a single larger BMP wet pond on site coupled with a request for offset pa}anent to the City of Washington and the North Carolina Ecosystem Enhancement Program. Water and sewer service will be provided from existing lines located along Whispering Pines Road and the US Hwy 264 Bypass. Kimley-Hom and Associates, Inc. Washington Square Retail Development, Washington, NC February 2007 Dept. of the Army Permit Application: Environmental Support Document c. Site description. The 33.22-acre subject parcel is bounded by US Hwy 264 Bypass to the northwest, Whispering Pines Road to the northwest, housing developments to the west and south, and ' the John C. Taylor Elementary School and the Pamlico Plaza retail shopping center to the east. The subject parcel has been and is currently under agricultural production since before 1938 based on a review of historical photography dating from 1938 to 2003. Other than the wetland areas and the man-made ditch, a majority of the site ranges in elevation from 7 to 10 feet above mean sea level. As shown on Figure 3, the Soil Survey of Beaufort County, North Carolina (NRCS, 1995) mapped 1 the following soils for the subject parcel: • Altavista fine sandy loam, 0-2% slopes (AaA) is a nearly level soil found on smooth ridges on stream and marine terraces. It is a well drained soil with moderate permeability and a low shrink-swell potential. The depth to the seasonal high water table is 1.5-2.5 feet with no flooding or ponding. Moderate wetness is the main limitation for building site development. 1 • Augusta fine sandy loam, (At) is a nearly level soil found on broad flats and in shallow depressions on stream and marine terraces. It is a somewhat poorly drained soil with moderate permeability and a low shrink-swell potential. The depth to the seasonal high water table is one to two feet. Wetness is the main limitation for building site development. • Muckalee loam, frequently flooded (Me) is a nearly level soil found on floodplains along small streams. It is a poorly drained soil with moderate permeability and a low shrink-swell potential. It is listed as a hydric soil. The depth to the seasonal high water table is 0.5-1.5 feet and the soil is frequently flooded for brief periods. Severe flooding and wetness are the main limitations for building site development. • State sandy loam, 0-3% slopes (StA) is a nearly level soil found on smooth ridges on river and stream terraces. It is a well drained soli with moderate permeability and a low shrink- 1 swell potential. The depth to the seasonal high water table is four to six feet, and the soil is subject to rare flooding. Slight to moderate wetness appears to be the main limitation for building site development. A majority of the proposed development would be located within the existing agricultural fields that are mapped in well drained State sandy loam. The remaining portions of the subject parcel on the south, east and north boundaries are mapped in Altavista fine sandy loam, Augusta fine sandy loam and the Muckalee loam and appear to be low relief drainageways. ' As shown on the wetlands survey in Appendix B, Wetland Area's A and D are connected by jurisdictional waters (Ditch E) and are located within the wooded area along the southwestern border of the subject parcel. According to the concept plan, these areas are bordered by a proposed BMP, ' the Parcel Area A and Outparcel 5. The construction of Outparcel 5 would result in an impact of 0.22 acre to Wetland Area A, a PFO 1 C wetland. The subject parcel is crossed by a series of connected ditches, identified on the wetland survey collectively as Ditch W, that were apparently installed prior to 1938 based on a review of historical aerial photography. Although maintained for agricultural use, the ditches exhibited sufficient indicators during a wetland confirmation site visit in November 2005 to be classified as Waters of the U.S. (WOUS), according to the USACE -Wilmington District (Scott Jones, personal communication). Due to the central location of Ditch W within the site, approximately 0.62 acre or 1 it 1 1 1 L~ u ICimley-Hom and Associates, Inc. Washington Square Retail Development, Washington, NC February 2007 Dept. of the Army Permit Application: Environmental Support Document nearly the entire ditch system would be filled for the purpose of constructing the retail development center. Ditch W has a hydrologic connection with Wetland C, a 0.36-acre PFO1 C wetland depression located at the southeast corner of the subject parcel that will not be impacted by the proposed development plan. Overall flow in Ditch W appears to be towards the northwest and under Whispering Pines Road. Wetland Area B is a 0.35-acre isolated PFO1C wetland centrally located within the larger contiguous farm field where all or a portion of Outparcel's 4 and 5, Parcel Area A and it's parking area, as well as approximately half of Parcel Area B and it's parking area are proposed. The construction of Parcel Area A and the adjacent BMP would require filling the entire area of this isolated wetland. Overall, the wetland areas are characterized by the following species: Woody: Acer rubrum (Red Maple) -Tree & Sapling Liquidambar styraciflua (Sweet Gum) -Tree & Sapling Diospyros virginiana (Persimmon) -Tree Fraxinus pennsylvanica (Green ash) -Tree Taxodium distichum (Bald cypress) -Tree Populus heterophylla (Swamp cottonwood) -Tree Ulmus americana (American elm) -Sapling Herbaceous: Saururus cernuus (Lizard's Tail) -Herbaceous Boehmeria cylindrica (Smallspike false nettle) -Herbaceous Juncus effusus (Soft Rush) -Herbaceous Smilax rotundifolia - (Greenbrier) -Herbaceous vine Toxicodendron radicans - (Poison Ivy) -Herbaceous vine Campsis radicans (Trumpet vine) -Herbaceous vine Polygonum hydropiperoides (Swamp smartweed) -Herbaceous Carex lurida (Shallow sedge) -Herbaceous The total acreage of the site and the portion that is wetlands is contained in Table 1 below: Table 1. Summar of Site Acrea e Total Site Acreage 33.22 acres Corps 404 Wetlands and Waters 1.89 acres NCDWQ Isolated (401) Wetlands 0.35 acre Net Developable Area 30.98 acres Kimley-Hom and Associates, Inc. Washington Square Retail Development, Washington, NC February 2007 Dept. of the Army Permit Application: Environmental Support Document 2. Project Purpose and Need The purpose of the project is to facilitate the development of an economically viable retail center consisting of a f27.4-acre grocery anchored retail center having approximately 150,000 square feet (sf) of retail space and customer parking for approximately 800 vehicles in order to provide quality 1 retail goods to the City of Washington area. The remainder of the development will consist of five outparcels that would most likely be purchased by commercial firms seeking to open businesses such as new dining or banking facilities for the local residents. The City of Washington and the surrounding region in western Beaufort County have experienced steady residential growth lately along with the creation of new Jobs In the area. The construction of the US Hwy 264 Bypass between the two major travel corridors of US Hwy 264 and US Hwy 17 provides excellent access between outlying residential areas and the businesses and offices located in Washington. Therefore, the proposed retail center would be in an advantageous location for businesses to appeal to both the local and traveling customer base. Currently, a larger number of grocery stores are located within and east of the downtown Washington area than towards the west side of town. The proposed retail center would provide a high quality retail and grocery shopping experience on the west side of town where customers could enjoy the new and updated commercial facilities and would not necessarily have to travel within the more congested downtown area to the east. 3. Projected Impacts to Wetlands and Waters of the United States ' urisdictional Determination. A 'urisdictional wetland delineation for the subject a. J J property was performed in September and November 2005. A wetland confirmation site visit was conducted with Mr. Scott Jones of the Wilmington District's Washington Office on November 4, 2005. Following the confirmation visit, the wetland flags were surveyed by Joyner-Keeny and Associates in December 2005. A survey of the wetland delineation is included in Appendix B along with wetland data forms. A significant portion of the proposed impacts to jurisdictional waters occur to agricultural ditches that exhibited sufficient indicators during a wetland confirmation site visit in November 2005 to be classified as WOUS. Given the recent jurisdictional policy review by the Corps regarding ditches, KHA did not submit the delineation materials (i.e., survey map and data forms), but continued with the preparation of permit support materials while awaiting a possible policy decision by the Corps that may have affected the federal and state permits required for the project. At this time, since no policy has been put forth and the applicant desires to proceed with the permit application, KHA has included the necessary delineation materials in Appendix B and is respectfully requesting a confirmation of the delineation. As shown on the wetland survey map, the following wetlands and waters of the US were located on the subject property. 1 1 ~ ' L~ 1 1 1 1 1 Kimley-Hom and Associates, Inc. Washington Square Retail Development, Washington, NC February 2007 Dept. of the Army Pernut Application: Environmental Support Document Table 2. Summar of Ezistin 404/401 Wetlands Jurisdictional Area Acres Wetland Area ID USACE (Section 404) NCDWQ (Section 401) Wetland Area A 0.38 Wetland Area B 0.35 Wetland Area C 0.36 Wetland Area D 0.46 Ditch Area W 0.62 Ditch Area E 0.07 TOTAL 1.89 0.35 During the wetland confirmation site visit on November 4, 2005, Mr. Jones confirmed Wetland Area B as isolated based on field observations of a shallow ditch between the isolated wetland depression and Ditch W. It was determined that the shallow ditch was crowned such that the direction of water flow in the ditch was divided, one portion directed flow towards Ditch W while the other directed flow into the isolated depression. Thus, the ditch would not allow connective flow between Wetland Area B and Ditch W. b. Impacts. The proposed project will impact 0.22 acre of the palustrine forested wetlands located in Wetland Area A and 0.62 acre of waters of the US within Ditch Area W, both areas are within the Corps' jurisdiction and together total 0.84 acre. In addition, the project will impact 0.35 acre of isolated palustrine forested wetlands that constitute Wetland Area B. Table 3 summarizes the type, area and location of the proposed wetland impacts. Table 3. List of Individual Wetland Impacts Wetland Impact Area Impact T e Type of Wetland Impact Status Impact Area Acres) Section 404 Wetland Area A Fill PFO1C Permanent 0.22 Ditch W Fill WOUS Permanent 0.62 TOTAL 084 C t Y~ .r r, ~ .~~., a. l,r~ ~ t. ~ iJ... - 4 K ;t .^ F .1'... Y. ~ Y..•. ~,-. '...:i ~t ; .t`,:s~ .Llr .,'.c, 1 t+.: ~~ ~.x' b;~w ~, Section 401 Wetland Area B Fill PFO1C Permanent 0.35 TOTAL 0.35 4. Alternatives Considered MAG II has considered the following alternatives in developing its proposal for the retail center: I a. No Build. The "no build" option would not achieve the basic project purpose of constructing an economically viable retail center to serve the Washington/western Beaufort County area. The targeted customer base would not have the opportunity to benefit from the new selection of grocery and retail Kimley-Hom and Associates, Inc. Washington Square Retail Development, Washington, NC February 2007 Dept. of the Army Permit Application: Environmental Support Document products nor would they benefit from the competition created by a new major grocery chain. In addition, traffic patterns created by the current arrangement of retail centers in and around the ' downtown Washington area would not alleviated by the location of a retail center that would allow customers to avoid this congestion. b. Development of two anchored retail centers. As discussed in the pre-application meeting in June 2006, the applicant had initially considered a full build-out of the property that included two retail centers, one in Parcel Area A and the other in Parcel Area B. Each retail center was to be 1 anchored by a large "big box" retail store. In addition, a sixth outparcel was proposed at the western corner of the property on Whispering Pines Road adjacent Outparcel 5. The applicant's original investment strategy to purchase the property was based on the ability to recover their investment by marketing the site to these larger clients and selling the six outparcels. The larger customer base attracted by the two anchor stores also increased the attractiveness and value of the smaller retail store locations, thus increasing the overall value for the property. 1 Once the wetland delineation was confirmed in the field in November 2005, the applicant reevaluated their investment strategy based on the extent and location of the jurisdictional wetlands, the anticipated cost of wetland compensation and the level of effort to obtain the necessary federal and state permits. The applicant expressed a desire to avoid and minimize wetland impacts with the intention that the minimal wetland impacts may allow for a more expedient permit review process. ' Therefore, MAG II rejected this alternative and worked with KI-iA to redesign the concept plan. c. Development of two retail centers with one anchor retail store. In the revised and proposed ' concept plan, the anchor retail store was removed from the retail development in Parcel Area B, reducing the developed area and allowing the avoidance of Wetland Area C. The location of the anchor retail store in Parcel Area A was moved with respect to the other smaller retail locations in order to avoid impacting Wetland B, the isolated wetland. However, based on discussions with the Corps and NCDWQ at the pre-application meeting, the area reserved for the stormwater BMP was shifted to utilize the site area occupied by the isolated wetland in order to increase the distance of the ' proposed BMP from the jurisdictional wetlands on the southwestern boundary of the property. It was decided that avoidance of an isolated wetland depression that would be surrounded by development and a BMP was not preferable to the potential adverse effect of locating the BMP closer to the jurisdictional wetland. ' This alternative was chosen by MAG II because the concept plan maintains the high quality retail development originally conceived for the property, provides a reasonable return on their investment and reduces wetland Impacts to a minimal amount. In comparison to the orlgmal concept plan, the proposed concept plan reduced wetland impacts within Wetland A by 0.16 acre and avoided the 0.36- acre Wetland C entirely for a total reduction of 0.52 acre. If the agricultural ditch had not been under the Corps' jurisdiction, the project would have qualified for a Corps nationwide permit and a NCDWQ state general permit for impacts to isolated wetlands and isolated waters of the US. 5. Protected Species, Cultural Resources, Riparian Buffer and Floodplain The US Fish and Wildlife Service (USFWS), the NC Department of Environment and Natural Resources (NCDENR) and the NC Wildlife Resources Commission (NCWRC) were contacted Kimley-Horn and Associates, Inc. Washington Square Retail Development, Washington, NC February 2007 Dept. of the Army Pemrit Application: Environmental Support Document regarding the presence of either federal or state protected species on the subject property. Copies of the letters of response from these agencies are provided in Appendix C. None of the agencies ' reported the presence of protected species within the project area. The USFWS reported that they were "unable to determine if federally protected species are present on the site" and recommended consulting their web page for a list of protected species in Beaufort County. Upon review of the USFWS web page, the following species were listed as threatened or endangered for the county: • Bald eagle (Haliaeetus leucocephalus) -Threatened ' • Kemp's ridley sea turtle (Lepidochelys kempii) -Endangered • Red wolf (Canis rufus) -Endangered • Red-cockaded woodpecker (Picoides borealis) -Endangered • West Indian manatee (Trichechus manatus) -Endangered • Rough-leaved loosestrife (Lysimachia asperulaefolia) -Endangered • Sensitive joint-vetch (Aeschynomene virginica) -Threatened None of these species are known to Inhabit the site. A review of site conditions Indicates that no suitable habitat for these species is located on the property. Accordingly, the proposed development would not appear to cause any adverse affect to state or federal protected species. The NC Department of Cultural Resources was contacted regarding the presence of archaeological and architectural resources on the subject property. A copy of their letter of response is provided in Appendix C. The NCDCR stated that "no previously recorded archaeological sites are located in the ' site files at the Office of State Archaeology within the boundaries of the project area." Apparently, archaeological sites have been recorded near the subject property, many during the US17 Bypass survey conducted by the NC Department of Transportation (NCDOT). The NCDCR will likely recommend a survey of the project area by an experienced archaeologist. Although it is possible an archaeological site may exist within the project area, it is important to note that most of the area to be developed on the subject property has been under agricultural production since before 1938 which ' may have disturbed any existing sites. A riparian buffer determination was performed by NCDENR on September 20, 2004. The site was ' determined as exempt from compliance of the requirements of the Environmental Management Commission (EMC) rules for protection and maintenance of existing riparian areas within the Tar- Pamlico watershed (Section 15A NCAC 2B.0259). A copy of the NCDENR determination letter is provided in Appendix C. The site is located within an Other Flood Area -Zone X, as shown on FEMA Map Number 3720567600J, Panel #5676, dated May 15, 2003. This zone includes areas of 0.2% annual chance (500-year) of flood, areas of 1% annual chance (100-year) flood with average depths of less than 1 foot or with drainage areas less than 1 square mile, and areas protected by levees from 1 % annual chance (100-year) flood. The portion of the FEMA map displaying the subject property is provided in Appendix C. 1 L~ 1 1 i 1 J 1 1 1 Kimley-Hom and Associates, Inc. Washington Square Retail Development, Washington, NC February 2007 Dept. of the Army Perrnit Application: Environmental Support Document 6. Preliminary Stormwater Analysis A primary issue identified by the USACE and the NCDWQ at the pre-application coordination meeting in June 2006 was the ability of the proposed development to address both the water quality and quantity standards of the Tar-Pamlico Stormwater regulations. According to agency representatives, the local area of Washington surrounding the subject property has experienced increased flooding in response to high rainfall events, as a potential result of the increased development and the associated impervious surface in the area. In addition, they were concerned that the site served to some degree as a conduit for a significant amount of offsite surface runoff, flowing from the southeast near the existing Wal-Mart store to the northwest under Whispering Pines Road. The agricultural ditch that traverses the site had been observed during local flooding events as having high water levels. An agency site visit was conducted on the day of the pre-application meeting where KHA and the agencies observed the drainage features on site and discussed offsite drainage potential. It was decided that there did not appear to be a source for significant offsite Stormwater; however, an agreement was reached that a preliminary stormwater analysis based on additional ground survey of ditches, culvert inverts and offsite topography would enable the agencies to better assess potential stormwater issues related to the proposed development. In October 2006, a preliminary drainage study was conducted to evaluate the ability of a proposed Stormwater management system for the development to comply with Tar-Pamlico Stormwater Regulations, the North Carolina 401 Water Quality Certification standards and the NC State Stormwater Permit. The drainage analysis addressed two primary issues, the potential for offsite stormwater flow and the ability of the proposed retail development to comply with the regulatory criteria for water quantity and quality. A copy of the Preliminary Stormwater Analysis (KHA, October 2006) is provided in Appendix D. Offsite drainage areas flowing to the site were identified by ground survey, aerial photography and field observation (see Pre-Development Drainage Area Map). The results of the study showed that the site does not receive a significant amount of offsite Stormwater flow. The study recommends that offsite runoff be routed through the site, bypassing any proposed BMPS, in order to avoid having to design larger BMPS. Routing of offsite runoff would be designed as part of a final Stormwater analysis for the proposed development. Using the preliminary concept plan for the retail center, two general scenarios for stormwater treatment were evaluated, one scenario included a single Stormwater pond while the other included different types of BMPs in series. The results of the study indicate the appropriate Stormwater treatment, both quantity and quality, can be provided by a series of Best Management Practices (BMPS) established on site or by a single larger BMP wet pond on site coupled with a request for offset payment to the City of Washington and the North Carolina Ecosystem Enhancement Program. Once site engineering design has progressed further, a final Stormwater analysis will assist with balancing BMP costs and developable site area with the amount of offset payment required. In conclusion, the preliminary Stormwater analysis indicates that the proposed development would be able to design a Stormwater treatment system to comply with the aforementioned Stormwater regulations. Given the information provided by the study, site engineering could proceed along with amore detailed Stormwater design effort in the event all necessary permits are obtained. Kimley-Hom and Associates, [nc. Washington Square Retail Development, Washington, NC February 2007 Dept. of the Army Permit Application: Environmental Support Document 7. Proposed Method of Compensation KHA has evaluated the potential for the development of on-site replacement wetlands and determined that the construction of such areas on the project site is not practicable. With the construction of the retail facilities contained in this application, virtually all of the available land outside the existing wetlands to be avoided will have been utilized for the retail center. Accordingly, the applicant proposes to pay into the NCDENR Wetlands Trust Fund to fulfill the ' compensatory mitigation requirements of this permit application for unavoidable impacts to 0.22 acre of PFO wetland within Wetland Area A. As discussed at the wetland confirmation site visit in November 2005 and at the pre-application meeting in June 2006, the impacts to the 0.62 acre of agricultural ditch will not require mitigation. According to NCDENR General Permit IWGP100000, compensatory mitigation is also not required for the 0.35-acre impact to isolated wetlands in Wetland Area B. 1 C J ~l i~ 1 t 1 1 1 ii ~~ 1 LI APPENDIX A PERMIT FIGURES • Figure 1 -Vicinity Map • Figure 2 -Preliminary Concept Plan • Figure 3 -Soil Map ~'1-o3g5 -,. ~ ;~ ~ _~9y6T f ' ~,~ •~`~~_' rY , ~~'~ f i, _ l _ iyl `~ ~ _ •!~~ ~ \ `y'~ 1 , ! ~~ ~~~ ~ r~ \~; \~ i ~- v i, r'- '` ~\11 \ > '~ i 'WARRtN ~` '15~~' a ~•~~ ;;l + ~~1 i ` '- '"~.~+7""~ ~a1 4 ~~ ~~ ~r+ ; 1~ Project Site iii FIELD . ~,:\~' ~~~. .- ~~ ~.\\\~, ,~``,~lt- ~1 ~~1 ~~. 1~.~_ s~_-~1`"'-' .,.C~1\L A,% ~.. -;1,~ ~'. ~ .~+. 4G6c77oA~ _ ~ ~~.,~~, \~j~ - m ' "` "` - fib ~,,. Pilin~R/ ~ ~~' ~"~;~.~ 3~~ ;~ 4 ~^. ~ c~ i~~ .c • - ,. ~a > ,,. .,_ - ~ ,. ~" The Castles r ~ .-c'~'~ C~I1 Whispering Pines Road Site Feet ~" Washington, North Carolina 0 1,000 2,000 /~ Figure 1 KimleyHorn Beaufort County I i i i and Associates, Inc. Scale: 1:24,000 N Vicinity Map Data Sources: Washington, NC 7.5' USGS Quad E E 1 ~ ~~s Asw •\ R 9, .,\ \ F F F e ~•, aroxr""T"E °"°m^M r°w° 1IA. E s ~~w SHOPS 16,800 Sf' °<, ~.Zq. •\, NC ~~HF PARCEL AREA A 15.2 Acres*-oei a~ INCLUDE REAR OF RREi GROCERY 56,388 S.F 15988 S.F-k IOiAt REiA1L SPADE 0 WE (LANDS 1~ ~~0 WETLANDAREAA ~~~oti~9~ IMPACT=0.22 AC. ~; ~ C .~ C 3urtl+.auouHD TRUCK \ 1 '~ '~ 1,1 t ~ \\ ~0 S S I ' ~~ 1 Z 2. 0 I. ~I ~ -. 1111 V I , 1 ~ , Resuu N. d~~~ i z ..- 791 PPRNNIG SPADES 1 ~~ l1t /mom .-.. `-.. -•-°-' ~ `fl ~ SHOPPING ° N W,~1 CENTER .. d-°-•-'g.. s SIGN (• UTPARC ra ; 1, 1 T - 05' G ~S ~t N _ ~ ~ i1 0 ~III~'JnI I ~`I 11~ _ I -_ 1I1 II I n.. 11 "Fueling .. ~~ ,~ _ I „_.. 17,7 r - - P • •~ 1 ~~~ OUTPARCE 2 11 . i 1111 ~ 1, ~ 1.0 ~ gank I ~ ResWufBnt II k ~ '& I tr1111 Iwo Lff ~ I vs su g ~;,;a~:I _ II ,,. 1~_ R~~ ~ ., :l, ,~~~ ,,3ao cs1 , r't~~r ti•.1 ~~- ~r-~ 838 59'37"F DITCH W ~"~~ IMPACT=0.62AC. i ~ i'~ :~s ;' :=,,., ;' ;• ;• ~ "~. ~. ~. • ,.~,~~ ee ~h><r J~ ~e name N: \I Ifi205000 WasM1'inalan\116205000-Was0nplm\cmeepl 4.tlxa 36,40 oce Jm I1. 200J 9.34om pv. 'u¢malne.s __ -- ... _ , __ - _- _ - ------- ------ - ~~~ " - ___ /VV~~' ~ -___~/ Y r ~______~ SHOPPING CENTER SIGN Q =_ ,;1 ~`~ -D3~5 TABULATIONS Pnrce(A 15.2Ac± AnchurRetntk 56,388sf Retail Shups: 19,600 sf Pnrkiugrequiredntl yn 200=380 synces. Pnrking Provided = 390 synces Pnrcet 6 12,2 Ac± Anchor Retnil: 44,000 sf Retnil Slroys: 30,000 sf Pnrking required n t 1 yet 200 = 370 synces. Pnrkvrg Provided = 415 synces Totat Site Aren: 33.22 naes± Assumptions and notes for Gasis of destAn: TI' VI '~% I/ pr I' nr d'r dAr rcyrcn raronrryhml y' lA r dpl A p I"r A rrk I Age Tl g ssy rnrc /oor rgr sl oani ' Li fl I g U A p f rrl 7tc it w.srigohm unA lore( au rtpnl rn rAnrAs nMrcg rlntiar t all pnrFSUg rnlndntlmrs nrz bnuAmr groundpoor syurtrc JooMgr. AAAirlounl y 1 I nraykyro Ad' upp I 1 JJ' vvz r' dnAeA ' rh 1 rare / n rpt pl 9 o p Rlrg p tl2 Ariv -1 d(orH- pt Ilnyont A A' i 1st y A'g tndad d rnris r" M MgeHr srorc or rih~ stmrAmAs mny result in n lau of rotnl pmAing nuA fllus n lace oJ' cLa 1 d' 'd 1! 'r y' t N A r L A A A g r' I A Of 'gtl rofGW d' fA' rgAAh I 1 A- yl dp A' g p ~A p F' gl y' A/ 1 II A" rrsrorsvlll ry rt flr an ou f JGLA Loran on rl' ronrrpr plnrr. Atotal aJ78 19x19) rt 1 1 Ir f IJ A d 1 hAJrom f6r r t I p A g I l e P' Or r L d ~ r y' rts A 11 Af 4 f.A 'np p r' A. n I' 1 fl'. pt pl 1 ly nrq main Irvll 'q (J A d ~ 1 Ng gntrl Deities ra Ar fl py p h ofesl r' nest .,rr~rter sr ,rn sl pp hln3 yr,rr rHJnr torn! sire n,rn IJ' I g I rr nt 1 I's nemvn ~flr rhrr snr Ile N ro br ndlnslrAn 1' gly Midland r---~ I I I 1 The Shopping Center Group RHAIL Real Esinrc SvLCwusr= ~~ ~~..ela>,n1>~J1, ~RT~ GRAPHIC SCALE 0 SU' 160 C ~~ y v~ N E ~ ~~ O ~ n~ T ~ f• LL ~ Q E~ Y ~ - ~~ a ~~ , a ~ , ~> 11 n~ o oy°a r ^ ~~~ o v~v o VJ r°nU z~ o~ H ~ U ~ .~. ~ O g~'x ~ ~ ~~~~~ a U ~ c a U w ~ W ~_ T C ,Q a E O C 0 A `~ ~ N ~ a C ScaEE (HP. ,~-1ao' scaly 11'1 norvE OE4LNE0 BY: OflANN Bx CHECKED BY: Ba>E: o2.v.as KHA PflOJECi N0: IIfi205000.1.100 SHEET NUMBER 1 t g8g q9. W `"~i~y p~pt F ~ AREA B WETLANDAREAB II IMPACT=0.35AC. QSOLATED) ~l _ !PARCEL ,1 12.2 Acres± 7F •~ ~~ ', ~ SHOPS `1 ~ W~ 22.000 S f •1 ,, _ 1 •1 ,RU~GarNioAN~ o o (~rl ~1 a SHOPS ~' ~~ s.GDD s.f. .1 ~~ .,. 415 PARKING SP •1 ACFS :_~,` rr _ _ ,1 +.i>.m.~..,,, 11 - RETAIL --~=n d 20.000 S,F. ~I ~"al ~ IvlW7 A W. D N ~ RETAIL ~~1 i40005.f. I~~ItyyI ~/3 ~~ " .._ VI II ,.~Iff ~ I 1 hu I ICI I'IIYI i ~, Ott 1, I ; ,~ i „~`'~n~~111~1~,~ Soil Key: AaA -Altavista fine sandy loam, 0-2% slopes At -Augusta fine sandy loam Me - Muckalee loam StA - State sandy loam, 0-3% slopes TaB - Tarboro sand, 0-5% slopes Ur - Urban land P \44r +j }Ar1 }"r W� Ow * # zrk10 ;i ,� a x, Whispering Pines Road Site Feet _ Washington, North Carolina 0 200 400 Figure .3 tGmleytiom Beaufort County I i I I Soils Map Scale: 1:4,800 N and Associates, inc. Data Sources: 2003 B/W Aerial Photograph (USGS) i 1 ' APPENDIX B WETLANDS DELINEATION • Wetland Delineation Plat • Routine Wetland Determination Data Forms 1 1 1 1 . . . . r LEGEND Lines Surveyed ----- --- Lines Not Surveyed EIP - -- Existing Iron Pipe EIS - -- Existing Iron Stake EIA - -- Existing Iron Axle NIP - -- New Iron Pipe Set PKN - -- P K Nail Found PKS - -- P K Nail Set RRS - -- Railroad Spike NI - -- No Iron Set or Found ECM - -- Existing Concrete Monument o - -- Indicates Iron Property corners set unless otherwise noted. R/W - -- Right-of-Way C/L - -- Centerline HGD -- - Horizontal Ground Distance WETLANDS C_~ NON-WETLANDS 1. --- WETLANDS AREA A = 0.38 Acres. WETLANDS AREA B = 0.35 Acres. WETLANDS AREA C = 0.36 Acres. WETLANDS AREA D = 0.46 Acres. DITCH AREA W = 0.62 Acres. DITCH AREA E = 0.07 Acres. TOTAL WETLANDS AREA = 2.24 Acres. 2. --- Wetlands shown hereon were delineated by Kimley-Horn and As socoites, Inc. 3. --- Being that property recorded in Deed Book 1136, Page 658 Washington Twsp. Beaufort County Registry. 4. --- Longitude = 35'33'03" Latitude = 77'0347" SHEcT 1 OF 2 WASHINGTON, NC i~ W. 15TH 5T. ~~ p°" ~ ~--~ ,~ a `mss Q .~ ~O ~~ W. 1 STH ST. ~ 1Sl ti sr SITE V I C I N I T Y M A P d i W "This certifies that this copy of this plat accurately depicts the boundary of the jurisdiction of Section 404 of the Clean Water Act as determined by the undersigned on this dote. Unless there is a change in the law or our published regulations, this determination of Section 404 jurisdiction may be relied upon for o period not to exceed five years from this date. This determination was made utilizing the 1987 Corps of Engineers Wetlands Delineation Monuol (Name) (Title) (Dote) K EENY `~ ~ Q i ~ I Nc & LANI> SU'Q~~O ~,~Qti~ ~~~ ~' '~~ c ~.~ 0 ~ ~ C!1 209 NORTH PEARL STREET - P. O. BOX 7533 ROCKY MOUNT, NORTH CAROLINA 27804 OFFICE.• (25,2 977- 3124 FAX.' (252 985- 6026 www.,joynerkeeny.cama WETLANDS NAP FOR PROPERTY OF GRIMES FARM, LLC TWSP: WASHINGTON COUNTY: BEAUFORT SCALE: 1 "= 200 Feet DEC. 19, 2005 200 0 200 400 600 DRAWN BY: DWM, GDJ JOB N0.: 050182 DRAWING REVISED JAN. 12, 2006: SHEET: 7 OF 2 VP: PAGE 1 ADDED DITCH AREA E TO PLAN FILE NO.: GRIMES WETLANDS D 1-12-06 rat ~ ri ~ ~ s ~ ~ ~ r i ~ Iri s ~ ~ ~ ~ ~^s ~ ~ ~ ~s ~ ~ ~ LINE TABLE - O1 TO 0200 LINE TABLE - D200 TO D105 BEARING DISTANCE BEARING DISTANCE N20'o7'a3"w 88.22 6.04 N00'49'35-E 51.97 S30'29'08'E 27.70 N "W 78.48 1 '1 1' 222.65 N 13'33'56"E N02'42' a5 29 N38'S3' N40'46' LINE iABIE - Di TO 0105 BEARING DISTANCE ' 4'W 126.37 N29'36'46'W 68.26 N10'24'19'`V 42.87 N 'W 1 4.00 N6T52'47"E 1.80 N/F ~~" 79'99 GRIMES FARM, LLC 21'w 88.66 DB 1136, PAGE 658 42"W 96.72 LINE TABLE - Al TO 820 BEARING DISTANCE 4'4 '4 81.00 N31.15'x5"E 30.08 N41' ' 11"14 20.74 N6S'26'26"E 31.49 S76'00'42"E 20.84 'W 18.41 N52'30'48"W 19.32 ' 16.95 N33'29' 16'1: 44.83 N20'42'27"E 20.98 N 1 7' 56.94 N14'14'S0"E 14.85 N4 ' ' 14' 20.40 N00'34'21 "w 56.35 S34.11'04"E 51St 58.38 S08'S0'03"E 35.94 4' 7' 17'W 36.04 531'07'~1'W 21.19 LINE TABLE - A20 TO Ai 17'4 '1N 96.51 q m 4 C v LINE TABLE - Bl TO 810 BEARING OISrANCE S83'02'S9'E 79.45 NOZ'24't6"E 31.63 N35'47'S1 "W 90.68 ' 42.13 S48'S9'3t'W 43.07 589'OS'S6'W 79.79 571' 14' 19'>,M 15.32 S18'S5'17"E BO.t t ' 53.14 LINE TABLE - 81 0 TO B1 S73'43'34'E 45.42 LINE TABLE - C1 TO C10 BEARING DISTANCE N26'0 '17"E 108.80 N76'06'26'E 52.31 N66'2 'O6"E 51.49 S23'45'32'W 40.89 . 'a 'w 32.74 S66'OS'S8"E 26.75 SOa'14't t'E 25.08 519'S5'141v 60.03 sse•ss'12w 74,,2 LINE TABLE - 810 TO Bt N39'45'32'W 81.81 v'. RWM ~' ws1 W7 NS9; , ~~Q~ ~ w6 egg w8 R~9g~9 3~ ~ ~~Z' O ws7 R9,j. ZONED: RA20 INJL Jy OL t LAND USE: U 53.22' AREA = 0.80 ACRES N08'S6'04"W 50.50 RWM s NCGS RHO BEA 112 N - 665843.17 S8T33'S9"E RWM OX> ` N/F E - 2574157.79 55.7 t' (~ ~ 1 A F LILY G. GRIMES sarsl'st~E R RwM ~ ,~~ S`Sv' DB 571, PAGE 008 106.19' ~ C i ~` 'S' ~ + 1,~;~L ~ B ZONED: RA20 S32'28'20"W 9J- As, s Sj, ~ LAND USE: U 146.48' R ,, , `~~+ 'P~~~Tr `~`~6+5 WM TO W 1 Q wss ~' \ w1 ~i w2 `~ ~ ~ 9, sA ~ ~ ~~ 583'51'07"W `~~ 7 ~ ~ wM 9S O' S ~ hi ~ W65 ' . W3g.28' , NS ?sc? \`.~ b~ 00' O W64 RW W M ~ R?, S8, ~ Q ~ ~ '~ 4 W63 W62 ~ ~~A 1r~,, •~ ~L A15 W9 RWM `~~ W56 ~~ A14 ,416 N/F . ~ -At 3 A12• GRIMES FARM, LLC ''Wt0 N/F S78'08'29"W - _ A1`7 DB 1136, PAGE 658 wss , ,L JUNIUS D GRIMES HEIRS: 183.52' . A't _ - - Als ZONED: RA20 , >t~, DB 950, PAGE 502 ' ,-.. ECM TO Al A910- . ~ n2 6 LAND USE: U w5a' , w1.1 , `S~, ZONED: 82 '` A9 _ - AREA = 33.22 ACRES ' ,. `.; :, `'~~ lAND USE: U p A A7 W72 ,.,. A3 A~ ~ W13 w Z ECM. A2=E1 At=E10 W5~ .. 28 W14 w 2 n 3 . ' . E9 W2 U1 ~ O Et2 ECI~ EB (n~ W52'"• W29 w25 wt5 W16 , w~~ K'1 Y ,' ~ E7 S~ , w24 W17 >6' Z ~ t7 m ~ ~ E6 tiC w23 wt8 v'9 ~~ d a .. 128.99' v` rn O w5t?.-tw30 w22 Z I/1~ N p N89'S4' 1 3"E ~. E5 ~>' w21 wl9 w p r` Z w ECM TO ECM w, cti a U O1 0 ~ m EiM E4•. w50 . Wit W2p ~~~..II w 00 N p tP~ E3: y ~ ~~,+ O 85 W49, w32 Z ~ Z ~ ~. E2 D200-E1 66 B7 86 O 3 cn: 84 -ECM o ~ ~ 3 ~ ozo t E 5 - _ ~ _ ' EIP TO ECM was w33 ; = z Bs - - - N31'44' 13'1N h w O ZO z D202 - '~ Z ~ o_ z ~ EIP - D7 810. . - B2 2.22' w s w34 ,~~~. n. O ~ r o v1 z o_ o ~ w ~ i ' -N ' 06 B 1 N 26g 60 ~ "by ECM EIP,y ~iA w W wa0 w35 ~ O p 0] ZO O v, ~ EIP TQ ~' ~ifl. I• C3 _45 W42 ~ ~~`` w O ~ ~' ~ ~ ~+~ . ~~ S~ p C2 ,. ;C4 W39 W36 ~ ~O ~ Q ~' ~ D1os p5 EIP TO ECM ~~o o~ ~ . ' . ` f w43 w38 37 ~'~ ~ ~~9~~-~F~ ~'~,~ EIP TO ECM 01103 ~ oa S29'24'05"E $9 s• ~ •W c7 1P '~p~0 ~~ c0 O S29'37'38"W D1~Oi 10.04' 6a`L' O~+ ` t- c6 Ci~FO.• A~ADLF 69.38 EIP cM o3 ~~Q F ` c1 ` '`!r c9 0• S~. ~ cF~9~s~i N21'40'23"W `L G .~ 1x ~,~ 3.0 6 F~ l~s 01 OZ A h5 ~ O rJ ~e O ECM TO EIP ~ Ate/ C~h ~~p ~~. , ,4.,`p ti ~ N F `~6`• ~ ~" JOHN COTTON TAYLOR SCHOOL ~'~ EcM N50'41'S1'E WASHINGTON HOUSING AUTHORITY ,~~ CITY OF WASHINGTON 25.27' DB 806 PG 66 DB 502, PAGE 526 ECM TO 01 PC B, SLIDE 316 ZONED: R6S ZONED: RMF EIP ECM LAND USE: UNKNOWN I eun ~ ~cr. ~ ~... N/F BEAUFORT COUNTY DEVELOPMENT CENTER, INC. DB 769 PG 498 ZONED: OI LAND USE: UNKNOWN "This certifies that this copy of this plot accurately depicts the boundary of the jurisdiction of Section 404. of the Clean Water Act as determined by the undersigned on this dote. Unless there is a change in the low or our published regulations, this determination of Section 404 jurisdiction may be relied upon fora period not to exceed five years from this date. This determinotion was mode utilizing the 1987 Corps of Engineers Wetlands Delineation Monuol ' Name) Title) Dote) SH~E~ 2 OF L G J 1 Q W rr V ' N45'39'43"E 1.93' EIP TO ECM LINE TABLE - E 1 TO E 15 BEARING DISTANCE N2.,^00'45'W 51.22 N2D'21'32'S~V 6 N23'21'S0"W 12.52 5 ' 4"W 5 N13'QB'43"W 48,67 N15'37'46"W 29.01 N04'32'49'w 7 N17'17'S7"E 33.97 '1 S74'48'43"W 81.00 S59'26'22'E 32.01 S16'25't3'E 1 4 1 S20'30'28'E 140.19 4 LINE TABLE - E1 N03'OB'23'W 5 1'0 E7 8.04 LINE TABLE - W1 TO W66 BEARING DISTANCE BEARING DISTANCE a 7'4 77.87 75.74 Sal' 15'49"E ' 60.28 Saa•34'39"E 71.98 S41'3B 37`E 60.73 S68'44'S81N 10.57 537'02'30`E 35.39 N44'35'38`W 78.78 S09'17'S3"E 12.16 N44'S5'18"W 82,81 '41' 38.23 43.19 S43'30'09"E 69.81 N80'16'11'1M 13.23 544'45'09'E 98.90 S43'32'1 "W 118.59 54a'a6'37"E 120.72 Sst'26'25'W 118.03 S45'SB'S0'~ 97.39 N66'OS'S8'1V 12.83 47' 4" 95.36 4 125.01 S74'36'44"E ' 110.43 N42'31'S0' 109.82 S72'33 23"E 92.65 N10'28'32'w 18.84 573'05'22"E 72.55 N42'18'27"W 63.24 S7Tp5'14"E 59,57 N44'48'45"W 123.94 i' 78.36 110.19 S7t'27'S7'1= 62.07 N45'27'OB'W 102.25 S70'13'25"E 112.06 N44'32'18"W 119.83 54t'S7'28`E 21.71 N48'3H'S8"W 64.32 N68'23'46"W 137.56 N4419'19'tiY 113.12 ' 1 83.23 89.33 N73'47'37"W 78.28 N48'OB'20'W 122.34 N70' 15'S8'W 58.02 N48'25'31 "W 99,59 N74'36'17`W 70.78 N8454'18"W 78.97 N73'13'17'1Y 94.89 N30'28'58"W 30.83 N '4 'w 104.50 ' " 31.75 S04.04' 1 I "E 11.66 N19'03'08'W 19,38 S44.37'04'E 59.48 N44•"49't6"W 48.77 545'08'10"E 118.53 N37'2D'14"E 18.21 S44'38'44'E 103.3D N42'40'49'W 55.20 44'4 ' 4" 109.72 " 78.00 S45'43'18'E 122.10 N4400'S4'W 67.87 548'O1'13"E 81.97 LINE TABLE - W66 TO Wt 543' 13'36"E 78.74 N3728'20'E 12.35 Kimiey-Hom antl Associates, Inc. ROUTINE WETLAND DETERMINATION DATA FORM (1987 COE Wetlands Delineation Manual) O ~ ., ~ ~ n 1 f e 1 1 1 Project # & Site: 116250000 Whispering Pines Road Site Date: 9/1/05 Applicant/Owner: Midland Acquisition Group II, LLC County: Beaufort Investigator: Kimley-Horn and Associates, Inc. -Dan Redgate State: NC Do Normal Circumstances exist on the site? YES Community ID: PFO Is the site significantly disturbed (Atypical Situation)? NO Transect ID: Wetland Area A Is the area a potential Problem Area (If needed, explain in remarks)? NO Plot ID: DPl VF,(iFTATTnN Dnminsnt Plaid Species Sualuin Indicoror Dominant Planl Species Stiawni i~iliwtor *Acer rubrum (red maple) Tree FAC * Saururus cernuus (lizard's tail) Herb OBL *Liquidambar styraciflua (sweetgum) Tree FAC *Campsis radicans (trumpet vine) Herb FAC Diospyros virginiana (persimmon) Tree FAC- *Toxicodendron radicans - (poison ivy) Herb FAC Fraxinus pennsylvanica (green ash) Tree FACW Boehmeria cylindrica (smallspike false nettle) Herb FACW+ Taxodium distichum (bald cypress) Tree OBL Juncus effusus (soft rush) Herb FACW+ *Acer rubrum (red maple) Sap/Shr FAC *Liquidambar styraciflua (sweetgum) Sap/Shr FAC Ulmus americans (American elm) Sap/Shr FACW- Percent of Dominant Species that are OBL, FACW or FAC (Excluding FAC-) 7/7 = 100% Remarks: * =Dominants NYT)R (lT ,n(TY Rca>rded D8(A FieldObseraatinm - Stream, Lake or Tide Gauge - Depth of Surface Water: - Aerial Photographs - Depth to Free Water in Pit: - Other - Depth to Saturated Soil: - No Recorded Data Available Wetland Hydrology Indicators Pnmarv Indic;tlors Secondary lndicatnis ('_ nr moreRcquircd) - Inundated X Oxidized Root Channels in Upper 12 inches - Saturated in Upper l2 inches X Water-Stained Leaves - Water Marks - Local Soil Survey Data X Drift lines X FAC-Neutral Test: Wl UO - Sediment Deposits - Other (Explain in Remarks) - Drainage Patterns in Wetlands Remarks: Data point meets wetland hydrologic criteria. 1 ROUTINE WETLAND DETERMINATION Project # & Site: 116250000 Whispering Pines Road Site Plot ID: DPl SOILS Map Unit Name (Series and Phase): Altavista tine sandy loam Drainage Class: Well Drained Taxonomy Subgroup: Thermic Aquic Hapludult Confirm Mapped Type? No Profile Description Depth Qnches) HUrizon Matrix Color (Mansell Moist) Mottle Color ,(Mansell Moist) Mottle AbundancefContrast Texture, Cuncretigiis, Structure.. etc_ 0-2 A lOYR 3/1 tine sandy loam 2-14+ A lOYR 3!1 fine sandy loam, oxidized rhizospheres Hydric Soil Indicators Histosol Concretions Histic Epipedon High Organic Content in Surface layer in Sandy Soils Sulfidic Odor Organic Streaking in Sandy Soils Aquic Moisture Regime Listed on Local Hydric Soils List Reducing Conditions Listed on National Hydric Soils List X Gleyed or Low-Chroma Colors Other (Explain in Remarks) Remarks: Data point meets hydric soil criteria. WETLAND DETERMINATION Hydrophytic Vegetation Present YeS Wetland Hydrology Present YtS Hydric soils Present YeS Is this Sampling Point within a Wetland YeS Remarks: Data point t/1 is located within a wetland. This point does meet jurisdictional wetland criteria. 1 N 1 Kimley-Horn antl Associates, Inc. ROUTINE WETLAND DETERMINATION DATA FORM (1987 COE Wetlands Delineation Manual) Project # & Site: 116250000 Whispering Pines Road Site Date: 9/1/05 Applicant/Owner: Midland Acquisition Group II, LLC County: Beaufort Investigator: Kimley-Horn and Associates, Inc. -Dan Redgate State: NC Do Normal Circumstances exist on the site? YES Community ID: PFO Is the site significantly disturbed (Atypical Situation)? NO Transect ID: Wetland Area B Is the area a potential Problem Area (If needed, explain in remarks)? NO Plot ID: DP2 VEGETATION 1 Dominant Plane Species Stratum Indicator D~~uiinant Plain Species Stratum lndtcator *Acer rubrum (red maple) Tree FAC *Magnolia virginiana (sweetbay) Tree FACW+ Populus heterophylla (swamp cottonwood) Sap/Shr OBL * Saururus cernuus (lizard's tail) Herb OBL *Polygonum hydropiperoides (swamp smartweed) Herb OBL *Carex lurida (shallow sedge) Herb OBL Percent of Dominant Species that are OBL, FACW or FAC (Excluding FAC-) 5/5 = 100% Remarks: * =Dominants HYDROLOGY r 1 r, Recorded Bata Field Observations - Stream, Lake or Tide Gauge - Dep[h of Surface Water: - Aerial Photographs - Dep[h [o Free Water in Pit - Other - Depth to Saturated SoiC - No Recorded Data Available Wcdand Hydrulogy Indicators Primar}' Indicators Secoudsry Tndicaturs (2 or more Reyuircd) - Inundated X Oxidized Root Channels in Upper 12 inches - Saturated in Upper 12 inches X Water-Stained Leaves - Water Marks - Local Soil Survey Data X Drift lines X FAC-Neutral Test: W4 UO X Sediment Deposits - Other (Explain in Remarks) - Drainage Patterns in Wetlands Remarks: Data point meets wetland hydrologic criteria. ROUTINE WETLAND DETERMINATION Project # & Site: 116250000 Whispering Pines Road Site Plot ID: DP2 SOILS Map Unit Name (Series and Phase): State sandy loam Drainage Class: Well Drained Taxonomy Subgroup: Thermic Typic Hapludult Confirm Mapped Type? No Profile Aescription Depth (Inches) Hotizoq Matrix Color (Munsell Moist) Mottle Color (Munsell Moist) Mottle Abundance/Contrast Texture, Concretions, Structure, efc 0-14 A lOYR 3/1 fine sandy loam, oxidized rhizospheres 14+ B 2.SY 5J2 lOYR 6/3 loamy tine sand Hydric Soil indicators Histosol Concretions His[ic Epipedon High Organic Content in Surface layer in Sandy Soils Sulfidic Odor Organic Streaking in Sandy Soils Aquic Moisture Regime Listed on Local Hydric Soils List Reducing Conditions Listed on National Hydric Soils List X Gleyed or Low-Chroma Colors Other (Explain in Remarks) Remarks: Data point meets hydric soil criteria. WETLAND DETERMiNATinN Hydrophytic Vegetation Present Yes Wetland Hydrology Present YeS Hydric sails Present YQS Is this Sampling Point within a Wetland YQS Remarks: Data point ~2 is located within Wetland Area B. This point does meet jurisdictional wetland criteria; however, this wetland was determined to be isolated based on field observation of the ditch network. The Corps representative on site verified that a shallow ditch extending away from the isolated wetland was crowned and did not serve as a hydrologic connection. 1 1 r ~Itt1~~yf~4T11 ~t7a ASS(3CI~IeS, ~C1C, ROUTINE WETLAND DETERMINATION DATA FORM (1987 COE Wetlands Delineation Manual) Project # & Site: 116250000 Whispering Pines Road Site Date: 9/1/05 Applicant/Owner: Midland Acquisition Group II, LLC County: Beaufort Investigator: Kimley-Horn and Associates, Inc. -Dan Redgate State: NC Do Normal Circumstances exist on the site? NO Corttmunity ID: UPL Is the site significantly disturbed (Atypical Situation)? YES Transect ID: Is the area a potential Problem Area (If needed, explain in remarks)? NO Plot ID: DP3 VEGETATION Dominant Plant Species St[aturn Indicator Dominant Plan[ Species Stratum hxiicator Glycine max (soybean) Herb NI Percent of Dominant Species that are OBL, FACW or FAC (Excluding FAC-) Remarks: * =Dominants; Upland areas adjacent wetlands are agricultural fields planted in soybean and thus are missing the vegetation parameter. HYDROLOGY Recorded Data Field Obser~~atioos - Stream, Lake or Tide Gauge - Depth of. Surface Water: - Aerial Photographs - Depth to Free Water in Pit: >24" - Other - Depth to Saturated Soil: - No Recorded Data Available Weiland H}'droJogy Indicators Primary Indicators Secondary Indicators (1 or more Required) - Inundated - Oxidized Root Channels in Upper 12 inches - Saturated in Upper 12 inches - Water-Stained Leaves - Water Marks - Local Soil Survey Data - Drift lines - FAC-Neutral Test: - Sediment Deposits - Other (Explain in Remarks) - Drainage Patterns in Wetlands Remarks: Data point does not meet wetland hydrologic criteria. Other than Wetland Area B, the farm fields do not exhibit evidence of being ponded or frequently flooded during the growing season. ROUTINE WETLAND DETERMINATION Project tf & Site: 116250000 Whispering Pines Road Site Plot ID: DP3 SOILS Map Unit Name (Series and Phase): State sandy loam Drainaee Class: Well Drained Taxonomy Subgroup: Thermic Typic Hapludult Confirm Mapped Type? No Profile Dtscription Dcpth (inches} Horiion Matrix Color (Munsall Moist) MottleColor (Mansell Moist) Mottle' Abundance/Contrast ~Texmre, Concretions, Structure. etc 0-12 A lOYR 4/4 fine sandy -oam 12-18 B lOYR 4/3 fine sandy loam Hydric Soil Indicators Histosol Concretions Histic Epipedon High Organic Content in Surface layer in Sandy Soils Sulfidic Odor Organic Streaking in Sandy Soils Aquic Moisture Regime Listed on Local Hydric Soils List Reducing Conditions Listed on National Hydric Soils List Gleyed or Low-Chroma Colors Other (Explain in Remarks) Remarks: Data point does not meet hydric soil criteria. WETLANn nF,TF,RMTNATT(lN Hydrophy[ic Vegetation Present N/A Wetland Hydrology Present ~TB Hydric soils Present ~rB Is this Sampling Point within a Wetland NO Remarks: Data point t/3 was performed to characterize a majority of the uplands located on site which are agricultural fields planted in soybean at the time of the wetland delineation. This point does not meet jurisdictional wetland criteria. . The fields were 1 1 i APPENDIX C AGENCY COORDINATION 1 • US Fish and Wildlife Service • NCDENR -Natural Heritage Program • NC Wildlife Resources Commission • NC Department of Cultural Resources (SHPO) • NCDENR - DWQ Riparian Buffer Determination • FEMA Map 3720567600J, Panel 5676 1 1 i 1 1 K~~~.,. ~` j ,~, :z.> ~ ~__ jai 1 1 t ~l 1 C . , s r ry 1~ May Z3, ?OOfi Daniel Redgate Kimley Horn. anal associates, Inc. 501 Independence Parkway, Suite 300 ~'hesapeake, V.~. ?~~32f} Dear Mr. Redgate: ~~ < 2~ j ~~ , y ~ Tl~anl you for your May 18, ?OOfi letter regarding the proposed. development on Whispering Pines Road. in ~Vaslaington, :Beaufort C'ottnty, North Carolina. This letter provides the CI.S. Fish and ~~ildlife Service's {Service) response pursuant to section 7 of tl~e Endangered Spec-ies Flct, as amended ~161~.S.C. 1531 c?t.scci-) {Act}. Based. on the infor~~aton that you. provided, we are unable to determine if federally protected species are present on the site. ~~e strongl}t recommend that. you consult our w~:b page at 1~ttP:ffncMc:s.fi~vs. Tom y~'cs for a list of protected species that may occur in Beaufort County. If your project contains suitable habitat for any of tl~e federally-listed species known to be present within tl~e county, the proposed action leas the potential to adversely affect those species. ~~s such, we recommend. that surveys be conducted to determine the species' presence or absence within the project area,espccially sensitive joint-~letch {A~srh~rnofn~r~c? vir~i~ii~EC} and real-cockaded woodpecker {~'icoicl~s hot,~ralis}. The use of North Carolina Natural Heritage program data should nat be substituted. for actual field su~-~~eys. Please dote that surveys for federally listed plants should be conducted during their optimal si~r`~cy tivindows {http:f/nc-es.I'ws.go~%fplantfplant siu-vey.ht~ml). If yn~t d?ter-~~in~ shit ±l~e proposed action n?ay affect {i.e., likely to adversely affect or not likt;ly to adversely affect] a federally-protected species, you should aiotify this office with your determination, the rosults of your surveys, sunJey n~ethociologies, and an analysis of the effects of the action on listed species, including consideration of direct, indirect, and cumulative effects, before conducting any activities that. ~migl~t affect the species. If you tletcrnline that tllc proposed action will Dave no effect {i.e., no beneficial or adverse, director indirect effect) on federally listed species, then you are not required to contact our office. for concurrence. Ho~~-ever, you should maintain a coimpletc record of the assessment, t~chtding steps leading to your detein3ination of effect, the qualified personnel conducting the assessment, habitat conditions, site photog~°aphs, and any other related articles. 1 1 1 1 1 i i 1 1 1 1 1 1 1 1 1 Thank you for the opportunity to recxiew this project. tf you ha~re any questions or comments regarding our response, please contact Nfr. Dale W. Suites of this office at (919) X56-452[x, Ext. 18 or Dale_Suiter(~z~fws.gov. Sincerely, ';~. Pete" f3enjanlin Ecological Se:n~ices Sul~er~~isor l J~ A 1 ~~, 1 1 1 LJ 1 NCDENR North Caroling department of Environment and Natlarai Res©urces Pilicla~el i*. Easlr~~, Governor N1atir i0, 2t)OEi 14~tr. I~ar~ ie I IZc;dgatc kimlcy-I1arn artd tlssc~cates, lnc. 501 lnde.pendencc Park,vay, Suite 300 ~'l~esapeake, V`F1 ~ ~ ~2() `SI1l7JG%t: ~v~~l,l~pti;'.rlllg Pr31e7 ~~oad ~I'iG; `v~ ashrngt~)ix, [;;aUf~Ori ~~oitlxl"_y, .~~`.~ Bear IVIr. IZe;dgate: V~TiI{i~m G. Rf}SS Jt., Secr~katy 'I~he Natural Heritage Program has no record of rare species, signif€cant natural conxmur~itics, or si~~nificatxt natural Ixeritage areas at the site nor ~~•itlxin a mile of tlxe pro}ect area. r'~ltlxoctgh c]ur maps do not. show records of sucix n~itt.rral heritage elements in the prc~je~ct area, it does nc)t necessarily' mean that tlxcy are not presc;~xt. It ~nsrv simply' rx~ean that tl~e area tics not bt;en serveyed. The use of Natural heritage 1'rogranx data should not be substituted for actual field surveys, particularly if the project area contains suitable habitat fc>r rare species, significant natural eotxxmunities, or priority natural areas. You rtxatr tivish to clxeck the Natural Heritage"Program database website at ti~~•wwti~r.acnhp,~~rg for a listitxg of rar€; plants anal aninxals atxd signifcan! natural comxnmities in the coutxty and on the topo~.~raptxic quad reap. t~lternatively, the; NC Center for Geographic Infc~rrxxation anal r'lrtalysis (C.CiIl1} provides digital Nahlral E-leritage data on.line~ on a cost recovery basis. Subscribers can get site specific irxfarmation on GiS layers with Natural heritage Program rare spec+es occurrences and Siglxificant Natural Heritage treas. The C'C~L~ website provides Fletnent Uccurrence {EC)} IC.~ srunxbers (instead of species rxarrxe}, turd ilxe data user is theta encouraged to contact tlxe Natural Herita4~e Prc7granx for detailed infot-tnation. 'I'bis service allows the user to tluickly and efficietxtly get site specific NI°1P data ~vtlxout visitinv tlxe NHP workroom or ~~~aiting fi)r the Information Request to he answered by NHP staff. I~or morsr infc)r-rnation aboalt data forrxtats, pricing structure and ordering proccdttl-cs. visit httpa,'tiv~ww.cgia.state.nc.ztsJef>db!datalist.html, or call GGI~~ Production .Services at (91 ~) 73i-?f)q{I. .Please do not hesitate to contact txxe at x)19-715-8E97 if ycu have questions or need fEU-tixer inft~rrnation. Sincerely, harry 1/. Letirand, Jr., loc}1o4~ist Natural lIcritage I'rogranx 1601 P~iail S~^ric~ Center, Raleigh, Nc~ Carolina 27099-1n©1 0~~ Whore: 919-733-~96~ ~ FF,X: 919,715-3G~a ~ Irrtemei: wrusv.~nr.state.nc.us ~J/A{Qy /~r/~j}/`)~J)a~/t/`(0/j~//j~j/~ A.n C... ...11R.._....a...::M. ~ Ate.......,:. ~.. .~ _w__ C.:._..ir..n. C:10/_ Cr Cf'Yf{p/r ~ Z~ ~n r+(1St I~f11YCi1mC(^. ~R6Y ~f F~{.i I+LLL.LLLi L~ ~~i~ ~:., . a r __ . 1 1 1 1 [1 1 1 1 1 x.; ;.;? ~;;~ ~ ' - ~ ;~. `s: btu . ~~ c~~r~~ ~ - ~.',. ~~ar+~ ~. ~ ~trtr~iEa?i~. T.~ecuti~~e rector 1~r~~~e4-~~s?t~tt ar~~ °, ..: ~v,t ~, ~~c, ~~~ `~~~i:~~~erirt~; I'irtc~ [Zc~~z~i ~.3,:, ~~%a~~in~.~tc~rr, i~'1~.' ~i~' ~~_.. ~ ~~ :tl~ t[~e :~~~rt~~ Car~lirr~ ~ilc[1a:[e I~:~~~.~r.rr-~:c~ C ,:Rlzr~~i ~~t~, reeer~je y~~?ur~ rer~rre~t ~~~r irr~c~rr;{~ ss rey~~r~litr .eeral ara~ Mate ~ra~rd~~red a~€`c~~- T~rreater7eci ~>.~: gee a ~~r~:.el ~t la~r~ lcrc:rte c~C ~:`~'[ii5;~~ c irt~; Pirte~ I~.€~r~d i ~Ja~~~ir~f,~t~~rn, ETC. ~e~rier~ crf`~r~r r~~:<<rcS,~; ~~~ rtr?t i=~~cate ~:,•. c~ftl°: _ « ~ ,zi~~~ f~~r?c~ ~-~tr etc. ~ l"~I2~' , ~ a il?},~i s ls'`iA~~` T?~ #'1~'il'~ iLt' ~i`si7~.lt X31 ~[~ C-1A Y r%ilr3r1Fr14t ~~_t`'t' .•! ~"3i' ~ r"C7fe~t. ~ i~`l ,~ _<it. _ •.. ,li'~ r~I(` ..i ~tti i"' }ii, _ ~..C::4 thr~ ~ t..,~._c:s~ ~iTiU `~ coat wlll't!i Ij)~~~rt`i:it1C)[3 rt7c aEi. 11 :+~` ja it; ~l+.l`: "4€.'::i"e; L:(?I~t~K' t~ ~~'~ >it2i;:~4 sty Fs:s~ 1' ;' ,"#I7[ rfia~)i`3~~5{3~ ~~:,'. _ ' .z-. Ckt7/~1~,_ . ll~P ~~ 1~~"}i1,{~i Is,~~'431.1I'~~4. ~~ ~~'~ t.ciLlliii_,'.`T €3_ 1~~: ~~OLII ilCa' 3t'l t1G' 1F4terTS"1"~. ~e£~Se S li, ., I21~', at #, f#.1 ~.) ii~. e~Y~`~'7'€~'. e ,._~ ~ Sic ! ~~ '' ~. C?i~`?it~€?3~~i~`t` ~•L' t _ '4r€alirr ~~~~,.x :°~. ,: [:~i~~~~~~~n t~f ~~~~~~ ~ is}~cr~c:s ~ 1? 1 "~~ ~~~ ~ ~r~ ice c~tttcr R~it~~~s. SIC` 21~9~-17? l Ytyr _ , ~3' ~~~~4 !11 .. ~ North Carolina Department of Cultural ReSOt~>rces State I-IstQric Pre~er~~atiozi Office ~~..~i P '#ni~~: ~. 'tE~~ttitli. i;lSu~ t . .. ._ t i.~ ~: I:Jiti,. t t { tir :t,t 1 i~< ~ irc'i :; ~tinC' t~, ~(J(~)(i ljanzt~l Ked~;ate . #~:in~#c~--l lc>rn and ,lssticiatcs, Irtc. ~)l inclcpezzclenc:e Parklv~a~`, `uitc ~{)() ~' Ike: \~ hispea-in;; Pini~s 1Zc>acl ~itc, #3<<zuf<srt (~ount~-, I~.lt ()(i-"1 ~~h 1?c:ar :dlr. 1Zecl =:ttt`: f, "l`lzank i-c>u for t•csur letter csf iti€at- l ~, ?()tlfi. `k'`c have rev~ie~ved the: prajc.ct refcrcztced alsc.~v-e arzd offer the. l . In the event ~v-e rev-ic~i<< am' j~t:rt~lit <~~'L~ilcatc~ns cc>ntzecteci ~i~ith this ~r<sacct, vt~e v~.~ill recc>zntncttcl a cin",~prc•l~c t~siv~e sur4°c°t' e~f the entire j~rcijc~c.t trc~:t. `~~'c: will t~cccsmn~tzid the surr~c~~ I3c c<:ztcii~crecl Ise, .tza C•\ptrzenCt•e# arclr:ztc>lcs~;ist tr.? zdct.tit;- a.zd cvahzatc the si~>-tzifzcance c,t <}rclzacc>k>l;ic;zl rez~~~=_ir-€s th.zt m:i~ l~c• dan~.z~;c~d or clestroti.cd 1»' t#ze proposed prc_sjec.t. Potential effects c>z1 uzzknovv-n resc:>zzrccs nnrst lsc asessed prior res the istiriatioaz c:if construction acrivitic:s. "1'v~,-ts cc>pics of the resulting arclaeol<s<~ical sul~-ey report, as ~v-e11 as c>ne eop4, of the appr~>priate site fcsrms, 41~c>ulc~ Ix forvv=lrcled tcs us fc>r t-tv~icvv~ and cotritnent as socsn as they ~zre avail.zhle :ttid «~ell in adv-ar'tcc of .~nt> c-t~t~structi<,ti :tctiv~ities. f>l ~svv~tn~ cc>mnzezlts. 'l"hc• project argil is locatc# ncsrthvv~est cif the "1'csu~n of ~~,'-ashin~tot~. \lo pre~•iousl~~ recozded archaec>lo€>cal sires arc: lcscated in the. site ftlc.s ar nc~ (.)Bice «f ;Marc :1rcl~aeolo~y ~v-irhin the baundarie5 csf tl3e presject area. I1c~~acv~cr, a profcssi{final archac:cslc>£.~isr liar ne~•er fc>rtY~zall~T sun-eyc:d the: entire prcijcct ~:rea. Nunxcrozrs arc3laeolcs~;ical 5ttes are recoz ded to the north, south, anc# ~v-cst csf tl~e proje.c t ~zrerz uz sin:ti#ar topographic stttinl;s. :~lan~> of these res<>uz•cc.s are historic archacc>lo~ical sites. '~€ost of the sites ~vrcre rccozdecl as a result of t#7c 1'~ 1-' 1>~pass surec:t-- condzzcte:cl 1~~, N(;17C)'I'. liase.cl on this hlforn~ation nc~: pr<}jeer location is ccsnsidered a high prol~ahilit}' area €csr the presexlce of cttitural resourL.es, 1?atricizlarl~~ historic sites. ;~ lzst c~,f trcharolo~ical consultants w=hcs have conducted or e~,pressed an interest in astztract vv~ork in N<srt:h (;arohna is avai#~thle zit ~°3vrr~~.arch.der.state.nc.ztse'cons~zlts.htt~~_ t'he arch:zeolc>~;isr5 listed, or ant° other e~periezlccd .€rchaecslcsz~st, rzza~ #~e, contacted to conduct the recotl~rr~endcd 5un-cy. r __-~-~ _ _ ___ I c~r~ttino ~___ hfeih~g Address Te1c Phunei F .tom 11,DJviIEVt~'rR3l"rtf3(V tiU"*,. 141e :,nt ~tn:zt.lc tft sfsz Ni' 4f i' '+lad Senae~ ±~:~tte.:r, 12.tlt~~ti;h N(.: 'f3 Nt 1i~7- ~~; t r ~} ~t, ~ r >> :i65 R[3S~`f)1iA'r~#)tY ril ~ i+ Rl<..mEStrac tt,kr~~ ~!,~; 3Li' 1~.1 ien'ie t t-titer, lialNt1~33 Nt: _ C~)~1~161? +i f,'~A 1 a,3„k7?l " $t>ftF~;~' & TC~.3ivN11~IC 71.`, Ty k31 +.nu Sttcrl, ii.d~iy,~ta, N(, if;8- y1.tt1 5~n i;~ [_n,tc€, lt;tl~r;,~3t h'F Z 6'+14f:1- 1 i~f~l~i ''L(~i47 'I'l~c ah<}~•e cc>t~it-Hants are n~adc ~tztsttant t<~ section 1()t~ r>t thc'.~.tt<>nal f [i5tcn-ic: l'tesc~t~-atic>t1 ;1ct r{ncl the ;~~cit~i;;rat~• {;c~i~ncil ran I fistot~ic I'resen-atiorl's lte.~;triatrn~s fct- (:ot»j~l_isrrzrc ~~-itf~ :~cctic7t~ lt)fi cctdifrecl at 3l~ {:I=IZ "I.'hank ~-c3aF fr,t- ~'c~rcr cc:>c~j~ct~.tican and ccansideratic~n. If } c~ir la~x~e ~}ttesti<>ns Gc>ttc:cr-r~irtl; tf~e ~ilac>~-c~ cc~tnt~lent l~lt~:ise cc?~~tac:t I~en:r (Jlcdhi.Il-L;arlet-, enc~ironr3~ental re~-ic~~ coor-clinak<~r~, at ~)1 i)-^:i:~ -~l~G ~. l n all flit.ure ccxnnlttnicttic.n~ ccancct-nit~ this l~rc:>jec.t, please cite. the aljcr~~c-rcfcrenc~el tr.tcftin~ n~itz~t5e.r- Sincc~~el~~, a ~..,..a~~..... I?;~tcr ~;tn1laG~k - ~'', f_ . 1 /t •:' r..^:~"'~~.ws l~CDEI~R~ -~ ~~„ Drr„~cr,~ror Fsvuco~.,oir ,wo ~~, tuaow,w ~~~ wArFgp `O G `? r o l_C~~ NORTH CAROLINA D~ARTMENT OF ENVIltONMENT AND NATURAL RESOURCES Y)TVISION OF WATER QUALITY r~ a 1 t i t Vioiatiott noted on site YES ~If yes, a Notice of Violation will be fornarded from the appropriate regional office. T~hg.~4posed project vYhich is to be located and constructed as described above is hereby determined as EXEMPTjNOT E EMPT fro ompiiance of the requirements of-the aforementioned rules as It applies to section `'r~ :j ~ ~ ~~ ~ ~ . O ~5~ _ _ .This determination does not alleviate the aecessity of your abtainiag any other 'State, Federal, or Local authorization. Property Owner's/Agent's S DWQ Official's Signature _ •This project mey require aSection a04/401 Permit or a CAMA Permitlor the pcopo6cd activity. lnquir(a should be directed Io the DWQ Central Ollice et {919} 933-1986 Wa9hiagton OtTice st (ZSZ1946-6481, Retelgb OEi3te at (919} 571-C70p, wilmingtoa O~cc at (970} 395-3900, Winston Salem Office at {(336) 771-063Q, A,ekerillc Otticc ac (828} Z51-6208. Eayettevllte Office a[ (910) 486-1541, or hlooresvilfe Office ac {704) 663-2699. NQTICE FOR REQUIREMENT OF COMPLIANCE OZ« EMC RULES FOR Pf1RO'CTCTION AND MAINTENANCE OP' EXISTING .RIPARIAN AREA'S 1 PR03ECT# K ~'"~ l ' ~~~ ~ COUNTY~PUU~f~'' DWQ OFFICE W c, QCJ vERSION: NEUSE (15A NCAC ZB .0233) TAR-PAMLICO ~(I5A NCAC 213 .oz59) CATA'W$A (1SA NCAC 2$ .0243} RANDLEMAN (15A NCAC 2$ .0250) oTxER EXEMPT K ~ !~ (D'WQ INITIALS) Property Owner's Name ~7 r ti _C!'1E' S f i Phone Nu~er (Hume) Address f ,' ~ , ~„+alC D City ~~rt~~ Vj-jl C State ~~ - ~03 °1 S NOT EXEMPT Zip (DWQ IMTIALS) ~ r+~ -~-rv~o~~ 1 As indicated oa attached map initialed by staff on Desc,~iptlon Qf Proposed Project ~, ~~ ~ .~~ ., - . ^ r. ~`::- i \ ~~ :..•~;~~ I ' ••~ -~ '' ' i`/ ~•:•: ~ ~•: y-~' %' ~ - ~~ •~ C -... •; ' ' Ste} ~_ ~~ t . -~_ %~ .~ ~ ~ . c =~: -" ; :•r :~.` ~,~ \~ •~ • v.~. • X~ J ~; ' .. ~~ I i ~1.~ •, C~r. ~ • 1 1 • ~~~ ~• ' • t ~ • ~, ~~ ~\~ / \ ~~~ ~:~ ~~ /~ =~_=w~, a ~ ~~~~ ~ 1 .se..;W .e. ~ ; .: . ~ ~ ley ~~-~±.~ ~~-?R~`, ~~ ..:_. .m. ~~ ' - ~:~. 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NI M.µ rVI,V~ad of lk ex Nmd Fbvb. s xre wsv.oa4e demr d ee ix anrrw eerx aam. w~ea. Nmd ervaaa2 adntrF.d. m~Ne u Nand Ra+nara dexaunm, AB ~~dprl~a~] (en IwuOy arm d pnn6rw; lu FNed Tpxa b Imd d t m l ket IwnLV ,Fat W m1apIS mmlN: +.t~r~ ddttmlyd faram ddlm411N ne^d^baciodtlo +Jar MnnbrrN. Nmd Nuxd Nu Po^^edY pdeaN Amt the I% .muN mxa u Mm bT a Amd romd gram da wu aEU9wntlr dmrmki Zen AR blJraes tlur Ne brnrerMd mud g~ymn. Fewer Aood m P~ Fraaam Ream h t% morel Aurnx w iwa ur k onward Aan t % anual dace Md b/ Fe6ed Aeod pomiM +Wmr uMa mwsuAun, n Bix ibod Rerudaa daemYmd. ICNE YE Ural Bord mx xM abdly Fvvtl frex aSoY; Ba Nam Nmaeom erw nnMl ® FLOODWAY AA51S IN Z(XJE AF IM ~ N da dand da one rte a^Y aUaert Ioodp'dn arm tler nxe k A:RMe d mt+oeMmR m tlw de t% ual Fine Imd m Fe omed Mtlea wbaawW FKreue h Mm barge. on1ER RooD ARFAs Taae a Nm d pz% ,nowt data nom: ease tx maw duce nme wM aaane denW d'ess dun 1 A>d urwM da.up aos kn tlw ~M miH: nd w.w Maniavl Nl Lmxs hrm % annulrMm. O OTHER AREAS Nee emngri m a wmde tl. a3x arnrl dean Molplin. Ama n wNd xd Aax»d m. ~mA.nrmM i, Fur pauW. ® COASTAL BARRIER RfSWRCES S3IE I ICBRtI ARSlS ~~ ~ OTI IFRwISE PROTECTED AREAS [ORNI UAS eras M are nameN baM w;aAn umymmm kaW Roan heard Aeaa. a% anrxW rwamx. AnHNWn FrvrMmy pax annpd dma n,mpwn m,m,ry - - - - Nemway bwmay .--. Zorc o ewmay «......~..•..•.... CBpS am OPA boaAary g uMw AMdiry Slwaal FhM Ifrrrl /+m' nlra0eenr Fkud Flevanma, kud deptla a flood selmdn. ----51,1--~-- Bau flmd fkvmm Ge and vane, ekydon In fma ass Bbod FNValon raWe x6ee annum MvA mrc; I.r 22T1 xk aim M kM •P.wrnxd b Nc NoM Harken VeMJ Gmm d taM ~~ Eme reeks la a------o Te.ataN „ m s2 . li as lp ~>rd 1YwawdlH~C, al~ahrered m tla Nogr Amekan allo® pUgMy+W irunwr~. wn~r. yM LL Iq] mp iEEI ~FIpSZpkE°N J[W N+re~Iwr WN AJ Mr~j ~ BM551G % NaN ENNa Geokdc>ra^Y tenaM1 nwA Ua clyWuCm M IF.. nNtm Innemm~ aemon amb FIRre web. BM551G® ~mr ~mYlan~rMilmdd~ Fi ~pu~dlpn M •M15 Arco Wk 0`1-0 3~5 GRIH AUP SCALE 1' •500' 11 :6,000) ® Fff1 IY 0 Iso amIETFAa 11111 11 1 1 7 1 11 JI11 PANEL 5676 J I FIRM fL00D INSURANCE RATE MRP NORTH CAROLINA PANEL 5616 µF ip~ro A w~~w pR MAR .~, rpR NRa E M Fg2fAINS fAMMONRY NJMBEA PANEL SVHm +~ dv~v rw N~, ~ fFfECIIYE OAIE MAP NUMBER NAY 15,1063 31205676601 Swa of Npnb Carolina Federal Bmecgency Ma2agemnt Agcpry~ ~~fFl ~l ~~ 1 APPENDIX D PRELIMINARY STORMWATER ANALYSIS REPORT 1 1 1 1 1 1 [~ 1 1 1 1 1 1 1 1 t WHISPERING PINES ROAD AND 15TH STREET WASHINGTON, NC PRELIMINARY STORMWATER ANALYSIS Prepared for: MIDLAND ACQUISTION GROUP Prepared by: KIMLEY-HORN AND ASSOCIATES, INC. P. O. BOX 33068 RALEIGH, NORTH CAROLINA 27636 October 10, 2006 116205000 i 1 1 1 1 1 1 1 1 1 TABLE OF CONTENTS OVERVIEW FIGURES USGS QUADRANGLE MAP PRE-DEVELOPMENT DRAINAGE AREA MAP POST-DEVELOPMENT DRAINAGE AREA MAP SOIL CLASSIFICATIONS BEAUFORT COUNTY SOILS MAP SOIL CLASSIFICATION SUMMARY WATER QUALITY STORMWATER POND DESIGN SUMMARY BIORETENTION DESIGN SUMMARY CITY OF WASHINGTON NITROGEN AND PHOSPHORUS WORKSHEET WATER QUANITY PRE- VS. POST-DEVELOPMENT SUMMARY PRE-DEVELOPMENT STORMWATER CALCULATIONS POST-DEVELOPMENT STORMWATER CALCULATIONS APPENDIX TAR-PAMLICO STREAM CLASSIFICATIONS "CONCEPT 4" LAND PLAN OVERVIEW Executive Summary The objective of this preliminary stormwater analysis is to determine the general characteristics of a stormwater management system that will provide adequate stormwater treatment to meet North Carolina Division of Water Quality (NCDWQ) and the U.S. Army Corp of Engineers (USAGE) requirements, for the proposed development of the Grimes Farms LLC property (see Appendix: Concept 4) at the corner of ' Whispering Pines Road and 15`~ Street in Washington, N.C. ' It is recommended that peak flow reduction of the 1, 2, and 10-year 24-hour storm be achieved by providing a Wet Detention Basin (Stormwater Pond). Adequate stormwater quality treatment requirements can be met by using a Stormwater Pond. Due to the extremely flat topography surrounding the site and the ponding of runoff observed both onsite and offsite (directly downstream), a more in-depth analysis will be required to accurately predict the effect of the proposed development on offsite ditches and downstream stormwater facilities. Back rg_ound This report contains the approach and results of a preliminary stormwater analysis conducted for the proposed retail development located at the south quadrant of the intersection of 15th Street and ' Whispering Pines Drive in Washington, North Carolina. The project encompasses approximately 33.16 total acres and consists of a proposed retail development (stores, restaurants, etc.) and all associated parking and utilities. The property is currently undeveloped farm land and flows north east to Cherry Run, which is a class C stream inside the Tar-Pamlico River Basin. Preliminary Stormwater Analysis ' The Stormwater Management system must comply with the Tar-Pamlico Stormwater Regulations by treating stormwater runoff for water quality and water quantity. The system must provide no net increase ' in the peak flow from the 1-year 24-hour storm and reduce nitrogen and phosphorus export. The system must also comply with 401 Water Quality Certification standards and those of a North Carolina State Stormwater Permit by providing 85% removal of Total Suspended Solids (TSS). Nitrogen export must be reduced to below 6 lbs/ac/yr and phosphorus export must be reduced to less than 0.4 lbs/ac/yr. Point of Analysis `A' (POA-A), shown on the Pre and Post-Development Drainage Maps, represents the point at which all stormwater runoff leaves the project site. Ultimately this is the location that onsite drainage and any future drainage system will discharge. Offsite drainage areas that flow to the site were identified by survey, aerial photography and field ' observation. It is recommended that all offsite runoff be routed through the site, by-passing all BMPs. If a bypass is not feasible, onsite BMPs must be sized to treat any offsite runoff. The calculations in this report assume that all offsite drainage will be routed to by-pass on-site BMPs. Water Quality Preliminary calculations indicate that it may not be feasible to reduce nutrient export levels by using BMPs alone and that offset payments could also be required. Inside the Tar-Pamlico River Basin, offset payment requests for nutrient export reduction are considered on a case by case basis. A request to make 1 an offset payment must be made by the developer and granted by both the City of Washington and the North Carolina Ecosystem Enhancement Program. The price of each payment is determined upon approval.. A Stormwater Pond will reduce nutrient export to the point where the buy down option is allowed and therefore, is the minimal recommended treatment. Additional treatment can be provided by using an Extended Detention Wetland instead of the pond or by using BMPs such as a bioretention area, routed in series with a pond or wetland. Using multiple BMPs in series will provided more treatment and decreases the cost of the offset payment. For example if one or more bioretention areas can be included, this will further decrease the offset ' payment that will be needed to meet nutrient reduction requirements. Drainage areas for each bioretention area should be limited to five (5) acres and each bioretention area should be located so that it can receive non-erosive flow (i.e. sheet flow from a parking lot). Runoff treated by the bioretention area(s) should then be routed to the Stormwater pond or extend detention wetland. Nutrient loading from impervious surfaces is much greater than that from pervious surfaces therefore, it is most effective to route drainage from impervious area to each bioretention area. One bioretention area will require approximately 11,000 square feet of area or 0.24 acre. A minimum of approximately 2.75 acres should be allowed for a Stormwater Pond or Extended Detention Wetland. If the developer chooses to use a series of BMPs such as bioretention prior to the pond or wetland, approximately 0.24 acres per Bioretention area is recommended. Bioretention areas are recommended for use in locations that have a water table no less than 6 feet from the land surface. i Water Quantity Approximately 160,000 cubic feet of storage (above the permanent pool) is recommended to detain Stormwater runoff generated by the 1-year 24-hour storm and release it at a rate less than the pre- development peak flow. This estimate includes a factor of safety due to the potential affect of nearby offsite Stormwater facilities that regularly hold water. As mentioned above, a separate analysis will be required in order to determine the impact that existing offsite drainage conditions will have on the required onsite storage volume. The post-development calculations included in this report consider a ' pond with approximately 285,000 cubic feet of storage above the permanent pool. The attached calculations show that a Stormwater Pond of this size will also control the peak flows of the 2- and 10- year 24-hour storm. Please see the Water Quantity section of this report for more details. Soils The Beaufort County soils survey indicates that Augusta Fine sandy loam, Seabrook loamy sand and State sandy loam are present onsite. Augusta Fine sandy loam and Seabrook loamy sand are classified as hydrologic soil group C and State loamy sand is classified as hydrologic soil group B. A hydrologic soil ' group C was assumed for the runoff calculations included in this report. A complete soils report, boring test, and infiltration test is recommended to determine the actual characteristics of the onsite soils as well as the seasonal high water table. This information is needed before a final stormwater management system design can be completed. ' Methods 1 Pre-and post-development runoff calculations were done using "Pond Pack," a Haestad Methods computer software program that utilizes TR-55 methods of calculating time of concentration and SCS methods of generating hydrographs. Conclusion Based on the preliminary analyses provided herein, a drainage system that utilizes a Stormwater Pond and the offset payment option for nutrient reduction, will be adequate to address the minimal stormwater requirements of the City of Washington and NCDENR. Such a system would provide nutrient reduction treatment and control of the 1-year 24-hour peak flow per the Tar-Pamlico stormwater rules. The system would also comply with the regulations of a 401 water quality certification and the North Carolina State Stormwater Permit, by providing 85% TSS removal. The areas shown as "Stormwater Ponds" on the conceptual land plan ("Concept 4", see appendix) appear to be an adequate allotment for stormwater practices assuming that final grading and the seasonal high water table will allow for an average permanent pool depth of no less than 3 feet and approximately 3 ft. of pond storage above the permanent pool elevation. The Stormwater Pond should be located so that it can receive drainage for the majority of the site and outfall to POA-A. Additional analysis is required to fully determine how offsite drainage areas and existing downstream stormwater facilities will affect the design of the proposed stormwater management system. 1 i i I;.. . ~~ ~ ~ • ~('herr~ stun ~ ~ r ~~, ~, ( ~ ~'---- ' ~ ''-~ rJCh ~'I' ~ f. ~ 1 _ -_ _.i . -. _ ~/ ~ j - ., ., ~. k ' n~ -+ -'"1 ~ ~ 1i t , - ~. ~~ d .. ~_. ~., ~ f _ _ - - 'Howe of P~tsSerr 'y.'•,~ r ~ - y`p far n ' ' anR S . ~~ Ch -;L fi ~" ~ ~t f . ~ 1 ~ - .~5 '~ ~; r , 's ~ ~' ~ \ ~, ,{ ~ ~, ~ g o j; 1 "~1r- ~ y j ~~ \ ~ ~-~J • Ili _ „~ ~ Q ' ~ ~~ to >+~ ~'~~ t~ ``~, `°~`~ t~. r,; ~ ` ,~, ° , , ' + fist ~~ ,ac3~,i . ~' / . • •~ ~~ ~~ ; -TE ~ fr' ~ ~~ ~ > - , ~, 1 ~` < 'j V ~ ~l \ i `i ~ ~ ~ , \• y i . ~~ ~ ~ F ~ cif f ~~/ ~ ~ ~f \~. t ~yk '~ ~ • ~ ` A ~ v r I"~ 1 \ ~ .. .-- ~ G. H~tht.3rJ (C r ~.~~ir „~~~.• ~~ •~~.. .•~ ~ ~ `ti` "~J~1V, ~ `k ~'~y f~~,s,' i o Ua>u~ac~n E ~• `'- ' 6`Ta ,ks ~ , ~~ ~ ~ _ '~~, T ~ ~~ ~ 2 ' ~~ ItT l~>11t~ w "~ ~~ ~eCe„ ~y i~Y`~ I~~ ~~:, a~ ~i ~ ~~{ ,, ~ ~ ~ ~`~r. ~ ~~ • ~.. ~n~7b r ~ ~ x if' ^~ ~a,7eaaon ~, ,-._Cien (C~d. - ~ ` «, • ~'J ~ ~= n , ~ ` w ~ / ,~ Y `'f, c LL r - _ _ ~ ~.,~ ~~ !y _ fi ~r ~ t ~. j ~ t USGS Quad Map (Washington, 1983) p''' - D'30~5 Project: Whispering Pines Road Washington, North Carolina Kimley-Horn and Associates, Inc. Date: Scale: Project No. Appendix: October 2006 1:24000 116205000 ~~ -~ ,,, . .w ,~,,,.. ~. ~ ~ ~ ; ; ~' ` , \ ~. ~ ~ ~ \ ~ w : ^- ,. ,, ~,~ F ~OA~A ~ ~, ~ _ \ _ ~ ~\ ` '~ ,:~~ ~~ . \ EXIS71NG 36'CMP V \ r' ~~ ` V y ~~" ~~ ~ \ ~v f ~ PRE-ONSITE ~ ~ ~ ~ ~ ` ~, ,~\4 ~ SITE BOUNDARY TOTAL AREA= 33.16 AC `, ;~~ ~ ,,ti , ~ ~;;, '`~^ ~ OFFSITE PERVIOUSAREA = 33.16 AC . ~ ~ ~ ~ Tc FLOW PATH (GRASS AREA -~., 24.45 AC) , ~ (WOODED = &;71 AC) ~ ~! ` ~ ti, ~` ~` ~ A IMPERVIOUS = 0.09 AC ~ v ~ ` ,~ ~ ~~=~ ~ v ,\ ` ~I ~, ~ . ~. ~~,~ ~~~ f ~, ,, .- t ~~. ~ ~' ~ ~_~ - ~ 0~'FSITE 100 ~~ ~ CHAN~1f;L FLOW ~ ~~ ~~ ' ,,~ , L = 754\FT \ \\`. ;~ w001~S SLOPE=O>24% '` ~~` _..0.83AC\ ' ~ ^ ~ , CHANNEL-Fk'OW1 ~ ~ ~_ ~ = so7 Fr ~. ~' ,.r~IoP~=a.p~ % CONCENTRATED FLOW L=60 FT SLOPE= 13.0% CHANNEL FLOW L = 421 FT SLOPE = 0.03 -~- ~ ~ _,.F ,\ ~.. =-. a .. 7' \ ' '~~ TOTAL ].16AC PERVIOUS = 0.43 AC IMPERVIOUS = 0.73 ~ ~ i ; p ~~ ~ ~ ~ ..~ ` ~. ti ,~ ~ ~ 2 ,_, i ~' ~ ~ f~ ~ i ~ ~ \ \ \ \ ~ { ` ~ \ ~ / Y... ~ 1ti '\ ` ~ ~- - FLOW~\` `~ \ ~ I . t ~ ~ ~, , CHANNEL ~ \. ~ ~ , ~v ~ ~ ~ _ , L 637 FT _ ",~ N OFFSITE-400 ~ - ~ sLOPE = 0.24 ~ ^ ^ ~ ~ HOUSINGDEVELOPMENI' ~ ~ .-~ ~ ''?- TOTAL=1.86AC '~,~'~. ~. n '-_ ~ ~'~ _ ~ ~ ~ CHANNELFCOW ~ _ ~~ ^ __ ~ ~ ~.'^ .~.. PERVIOUS - 0.65 AC ~ / ! ~ L = 247 FT',, ~. ~ : ~ ~ ~~ IMPERY]OUS = ]2I ~ ` ~ - t , - SLOPS b.945`% ~ .v ~~~ '" ' ~ ~, ,.,_. ~. ~,- ... --~ ~ ~ i \ . ` - G . ~~' ~ i \ i .M / ~'_ ., ] ~ ~ ~- f i~ ~' y. '~ \ ~ ~~ A ~ Y ,, A r V l ~ ~ . ~~~ i ~ ,.: _ ~ _,r, ~ ' ~~ OFFSITE-500 ~;~ ~~ ,; _ ~ - - ~ ^ ~ . :~ _ HOUSING/COMMUNITY CONCENTRATED~LOW ^v CENTER L = 89.34 FT TOTAL = 4.31 AC PERVIOUS = 2.85 AC SHEET FLOW SLOPE = 1.40 IMPERVIOUS =1.46 AC ~ti L = 260 FT ~~ ` SLOPE = 0.58 % ^ ONSITE Tc FLOW PATH NOTES: 1.OFFSITE DRAINAGE BEYOND THE LIMITS OF THE SURVEYED AREA WAS DETERMINED USING USGS QUADRANGLE MAPPING AND FIELD VISITS. 2. THE EXISTING DRAINAGE PATTERNS OF THE ONSITE AND OFFSITE DRAINAGE AREAS SHOWN HAVE BEEN DETERMINED USING SURVEY INFORMATION, FIELD OBSERVATION, USGS QUADRANGLE MAPPING AND INFORMATION PROVIDED BY THE CITY OF WASHINGTON UTILITY DEPARTMENT. 3. POINT OF ANALYSIS 'A' (POA A) IS CONSIDERED TO BE THE POINT OF CONFLUENCE FOR RUNOFF GENERATED BY THE DRAINAGE AREAS SHOWN. PRE- ANDPOST-DEVELOPMENT PEAK DISCHARGES WILL BE ANALYZED AT THIS POINT. 4. TIME OF CONCENTRATION USED FOR RUNOFF CALCULATIONS ARE AS FOLLOWS: ONSITE Tc = 31.80 MIN. OFFSITE Tc = 27.91 MIN. O'1-o3g5 PRELIMINARY NOT FOR CONSTRUCTION GRAPHIC SCALE p 250 500 1000 ( IN FEET } 1 inch = 250 ft. __- ve~u+EO m we oma Oe CLIENT: __- _ - -. , ° LOCATION: ~1~O~ID~06 - Kimley-Horn MIDLAND ACQUISITION GROUP ~ '~:zsos ~~ WHISPERING PINES & 15TH ST. ` 9 „o ~~, and Associated InC, nTLE: "~°~ WASHINGTON, NC iPe ° ~ ^~ ^<<<~ m ~^d ^^~_ ~ ^ ro. aox a3ose - Rai.ec~, rioRrn cnROUtrn z~s3e-soee PRE-DEVELOPMENTbRAINAGE Pk ~aF„g^~` ^~ aoa. '° , ° "", °,, ` ° rHOwF (sis) sn-2oao Fnx: eep> sn-zoeo AREA MAP ^. "" ""'°„ `~ "` 9e "",^` ~~ ~'eEw ~~~: "°"is~ llesosooa OFFSITE-200 GRASSLAND ~2AIAC_------ - ~»~, NOTES: ;:~~:~ ~.. -'" ~ ~ ~\ ,~ I.OFFSITE DRAINAGE BEYOND THE LIMITS OF THE ~ `~ ~~ ~ ~~, f''~' SURVEYED AREA WAS DETERMINED USING USGS ` ~ QUADRANGLE MAPPING AND FIELD OBSERVATIONS. _.P~OA A;~ ~~ ;,, ~~ ,\ ~ ,,~ -; - ,~ , ,^ 2. THE EXISTING DRAINAGE PATTERNS OF THE ONSITE `. ,..; ' g ." - ` ~ ~. ` AND OFFSITE DRAINAGE AREAS SHOWN HAVE BEEN `" `~ ` ~ ~ ~~ ~, ~ ~ ' ~. ~~~ ' .` DETERMINED USING SURVEY INFORMATION, FIELD `\ ~~ ; ` , , \\ .\ :~ OFFSITE-100 ~ Q \ ", '~ ~~ ~ OBSERVATION USGS UADRANGLE MAPPING AND 1 ~\ OFFSITE-300 INFORMATION PROVIDED BY THE CITY OF wooDs \y~- " ~ ~ ~` ~~ ~ ~~ ~ os3 Ac TOTAAL~L 60AC WASHINGTON UTILITY DEPARTMENT. _ _ ,t~ PERVIOUS = 0.43 AC w ,~ ,~,\ ~ \~\ ~ ~ OFFSITE-200 IMPERVIOUS =0.~3 3. POINT OF ANALYSIS 'A' (POA A) IS CONSIDERED TO T` " 4~ ~ ~ ~ ~' ~, "~` \ , ~ ~ ~ ` ~ ~ ` GP.ASSLAND BE THE POINT OF CONFLUENCE FOR RUNOFF ;~ (~ ~ '~ ~`~ I ; ,,~ z.al Ac GENERATED BY THE DRAINAGE AREAS SHOWN. PRE- ~, ~ ~ ` '~~ 4. AND POST-DEVELOPMENT PEAK DISCHARGES ARE POST-100 ~~ , ~~ ,~~ ~ ,V ,,;,; ..;, i~~~l _ ANALYZED AT THIS POINT. PROPOSED DEVELOPMENT 4 7 O '~ \~ TOTAL=33.16 AC ~ti5i ~~~~ PERVIOUS =13.19 AC ~ ' ~ ~ ~ ~ ~ :, ,- ~ ., 4. Tc ASSUMED TO BE 5.00 MINUTES FOR PROPOSED IMPERVIOUS = t9.97 Ac ~ ~ ~ ~ ,._ _ ,` ~ 9 :; _- DEVELOPMENT (POST-100) ` ~_ -- _ ., ; 4. ! ~ ~ ~. ' '~~ ' ~' ~~'~ ., - -., _, ~ ~~ _ ~ 5. SITE LAYOUT SHOWN IS PRELIMINARY IN NATURE. ,. ~~~__ ~ v ,,. - 1. t i ~ .~.,\ ~ ~ it ~ n~., ov-.1~: j i ...`_ i ~. ~ ~t ~ y ~ ~ ,i ~,~ ~ `'^ ~ ~ Y A ~ ~ ~ '~8~~ ' ~ _ ~ ~ 1~ t . l ~ ~ I A s~ ~ ~~~ ~ ~ ~. ~ ~ ~ i ~ ~°.~,~ ~~ ~- `fir ~~ ~`~. !~ ~~. OFFSITE-400 ~ ~~~ ~~ ~ ~ ~~~b t HOUSING DEVELOPMENT ~~~r ~~`~ / ~~'~. ~ _ /'~ ~~ .m TOTAL = L86 AC ~ ~ ~ "~ ~ - ~ `~ ~(i ` \~ I PERVIOUS = 0.65 AC ~ ~ `~` ` ~ ~ % ` , ~. ~ \ ~ \x \ . IMPERVIOUS =1.21 AC ~` `~ _ - sr~~ _ ~ ' ~ ~ _` ~` ~''P~iOPOSED SWRN4ATER ~ -- - ''~ _ ~ O 2 ~ G Ptn+D`~ ~ ~~ v ' v ~~ J J Y ~ ~ ° % - 1 i ~, pROPOSEO~-RMVATE ~ \ ~~, , ~ , ~, ~ ~ PRELIMINARY ,\ ~ OFFSITE-500 ~ _ NOT FOR CONSTRUCTION ~`.~~.; HOUSING/ COMMUNITY ' `- -~ ~ ~ CENTER ToTAI,=4.3tAC .~ GRAPHIC SCALE PERVIOUS = 2.85 AC IMPERVIOUS =1.46 AC 0 250 500 1000 (IN FEET ) y 1 inch = 250 ft. _ PAFPMED w we omcE OP: CLIENT: °10~~D~06 LOCA710N: - Kimley-Horn MIDLAND ACQUISITION GROUP "~~:'sog"`' wx[sPERIN~ PINES & IsTx sT. ° ~ and Associates, InC. TnE: "-~A WASHINGTON, NC 9 POST-DEVELOPMENT DRAINAGE ~s a a a,"~" rs ~, - P.O. BOX 33068 - RAL9tli NOFiTIi CMOIlIA 27838-3088 ~ wN ~ ", E~ ~~~„~~ ~~ ., ~ Boa ' ~ , .m'°' " '~ , " , ~~ " ro ~ erlonE: cm9) 6n-2ooo Fnx: cm9) sn-zow AREA MAP ~~~ `"s~ . "`° """` " "` iissosoao ~: ~. s >~ ~'~ ~:,. ~~ ~~ <,~~ ~, ~. '. ~~_ r '~ ~ ; F }~ ( ~ _._ i,... - t` 7 ' - _ '. yr: ~" t= r~ ~~ ~ ~~ c Le °"~ CfA yn! ~ ,~ 3- i -~ ~~ ~ , ~ ~-'~ ;rte [a ~ x~ ~ _ ~~ ~~,~ T ~ C[B Cr6 ~ ~ 3CrA La ~ ~ ~ t . ~ ~ a ~; t ,~'~ s- GoA~ sE 24 3F~ " ` w~ ~" ~~~ " 's. ~ _ } StA ~~ § - '"A r ''fir "`~ ` ~s' CrA ~.. d t _~.F Le , Le ~+ - C ~ ~ ~~~ ~ ~ rA ~i a ~ ~ ~ -~- ' 3.,r~r ts~":z- ~, - ~ ~ Is :flGoA ~ L ~ ~ `~ ~ ~ s ~ ~ r CrA ~~'~ +Go~'~' y LY= - ~ v '~~ ~ r > ~~ - ~ _ . -- 1509 .. ~ ~ t;, ~'+~"~ ~~ . ~ ~, ,, ". ; ^ , i ~ ~~ a ~ ` ~ o- LY I ~ ~ . ,~ Ur .yf~~J ~ :> ' - - . q~~ A q . ~ ~,n ~,Ka}~+ ~~~~ Le aA Sb ~,. ._ ~ - ~. ~ ' ~.~' o ,r ~ s~ ~ `~ _ a`. .r -Le U GoA '~ La ,~ Le ~ `~ ~' ~~ i ~' ~ ~ _ E 3 rj _ ~ . 9 } r .., } d y Y I T 1 4 ~ t ~, FY~ t=.. S ' ~ tA~ ~~~ ,y ~_ Cr6:. T \ ~ ~ a ~'~ ~ P' ; '~~ - R t ~; , ~ _ ~ az ~ is Yiv ~~ St StA ~ ~~ '`~ ,~ z` ~~~ ~ 1 ~ ~ ~ `i~ ~ CrA ~ _ , ~ L j r'~="' ~ e ~ s ,~ ?" Tag • '~ ... ~ AaA . =c ' ~ ~ ~ ~ ~ ~~, ~~ ~ ,~ `Sfq ~ TaB ' ~~. ~~ Ly ~' Ly -~~r CrA s ~-,~•` ~ ~ To ~ AaA ;A Wf1KI;L`N FIELD l.e Lati ~'.~~~ :::., SITE' stA ~' ~ 3 ~ ?F2 ~Z Ur a _~ ~ .~: ` z K ; ~~ S~ a ~ _> StA _ ,~' Tt i ;°~ ~ `A A ~~ ~ ~ s r ~ ~- ~r ~. ~~ - ~ ~' T ~ 'L ,y - ~ _ ~~ ~ ¢ ~tA ~ ~~: Ur '~ ~~ .Y' ~ ~~ r~~ ~}~a ;Y ~. ., ~ ~ Pm ~ ~s ~~ ~` a. / n; ~ y AbA si ry- ~ V"~ ' r - ;~ ~ ~ ~ }~ ' ' Ur ~ . Ur ~'` r ti ~ \ .: ~ ~ T ~ _ _ _ AbA s~ ~ ~d ~;~ ., -~ ~ ~ t><, HINGTON ~ c2 ~`coa~~=.< ~ WAS s ~'''r 3 r ~~ ~t cs ,~~ - „~r ~ 'i ~rt c i u~ _ ~ ", fy, ~ s~ _ ~ ~ = T - c~ i Ur - .. ~~ '- ~.r: ~~ ` Se \ ~\4 Title: USDA Soil Survey (Beaufort County ,September 1995) Project: Preliminary Stormwater Analysis Whispering Pines Road Kimley-Horn and Associates, Inc, Washington, North Carolina Date: Scale: Project No. Appendix: October 2006 1:24,000 1 16205000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Map Unit Legend Beaufort County, North Carolina _ Map Map unit name _symbol At Augusta fine sandy loam Sb Seabrook loamy sand StA State sandy loam, 0 to 3 percent scopes USDA Natural Resources Survey Area Version: 7 Conservation Service Survey Area Version Date: 01/03/2006 Page 1 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ i ~ ~ ~ ~ ~ ~ i ~ Water Features Beaufort County, North Carolina [Depths of layers are in feet. See text for definitions of terms used in this table. Estimates of the frequency of ponding and flooding apply to the whole year rather than to individual months. Absence of an entry indicates that the feature is not a concern or that data were not estimated. This report shows only the major soils in each map unit] Water table Ponding Flooding Ma mbol s H drolo ic p y and soil name y g group Surface runoff Months Upper Lower Surface water Duration Frequency Duration Frequency limit limit depth Ft Ft Ft At: Augusta C Very high January 1.0-2.0 >6.0 - -- None -- None February 1.0-2.0 >6.0 -- -- None -- None March 1.0-2.0 >6.0 - -- None --- None April 1.0-2.0 >6.0 - -- None - None May 1.0-2.0 >6.0 - -- None - None December 1.0-2.0 >6.0 - - None - None Sb: Seabrook C Very low January 2.0-3.5 >6.0 -- --- None -- None February 2.0-3.5 >6.0 -- - None - None March 2.0-3.5 >6.0 --- -- None - None April 3.5-5.0 >6.0 - --- None -- None May 5.0-5.5 >6.0 - --- None -- None October 5.0-5.5 >6.0 - -- None --- None November 2.0-3.5 >6.0 - --- None -- None December 2.0-3.5 >6.0 - - None - None S1A: State B Low January 4.0->6.0 >6.0 -- -- None -- None February 4.0->6.0 >6.0 --- -- None - None March 4.0->6.0 >6.0 - -- None -- None April 5.0->6.0 >6.0 - -- None - None October 5.0->6.0 >6.0 - - None -- None November 4.0->6.0 >6.0 -- -- None --- None December 4.0->6.0 >6.0 - -- None - None USA Natural Resources Survey Area Version: 7 Conservation Service Survey Area Version Date: 01/03/2006 Page 1 ~ as r• r• rs rA ~ ~ it ~ r~ ~ ~ iris ~ s r~ ~ ~ Physical Soil Properties Beaufort County, North Carolina [Entries under "Erosion Factors--T" apply to the entire profile. Entries under "Wind Erodibility Group" and "1/Vind Erodibility Index" apply only to the surface layer. Absence of an entry indicates that data were not estimated. This report shows only the major soils in each map unit] Erosion factors Wind Wind Moist Saturated Available Linear i O di- erodi- Map symbol rgan c ero and soil name Depth Sand Silt Clay bulk hydraulic water extensi- matter Kw Kf T bility bility density conductivity capacity bility group index In Pct Pct Pct gicc micro misec mnn rc~ rci At: Augusta 0-7 -- - 5-20 1.40-1.70 14.00-42.00 0.10-0.15 0.0-2.9 0.5-2.0 .20 .20 5 3 86 7-12 --- -- 5-15 1.40-1.70 14.00-42.00 0.10-0.15 0.0-2.9 0.5-2.0 .20 .20 12-18 --- -- 20-35 1.35-1.60 4.00-14.00 0.12-0.18 0.0-2.9 0.0-0.5 .24 .24 18-45 -- --- 20-35 1.35-1.60 4.00-14.00 0.12-0.18 0.0-2.9 0.0-0.5 .24 .24 45-80 -- - 5-35 1.35-1.60 4.00-14.00 0.08-0.17 0.0-2.9 0.0-0.5 .15 .20 Sb: Seabrook 0-8 -- -- 2-12 1.30-1.60 42.00-141.00 0.05-0.11 0.0-2.9 0.5-2.0 .10 .10 5 1 220 8-81 -- - 2-12 1.30-1.60 42.00-141.00 0.02-0.09 0.0-2.9 0.0-0.5 .10 .10 StA: State 0-6 -- -- 5-15 1.25-1.40 14:00-42.00 0.08-0.15 0.0-2.9 1.0-3.0 .28 .28 5 3 86 6-18 --- -- 2-8 1.25-1.40 14.00-42.00 0.06-0.09 0.0-2.9 0.0-0.5 .28 .28 18-44 --- -- 18-34 1.35-1.50 4.00-14.00 0.14-0.19 0.0-2.9 0.0-0.5 .28 .28 44-60 --- - 2-15 1.35-1.50 14.00-141.00 0.02-0.10 0.0-2.9 0.0-0.5 .17 .17 USA Natural Resources Survey Area Version: 7 Conservation Service Survey Area Version Date: 01/03/2006 Page 1 w 1 1 1 1 1 r 1 1 C ~ I~ Kimley-Hom ~ I ,and Assopafes, Inc. STORMWATER POND DESIGN SUMMARY Project Information Project Name: Whispering Pines Road, Washington, NC KHA Project #: 116205000 Designed by: JPK Date: 10/12/2006 Revised by: Date: Revised by: Date: Checked by: TSJ Date: 10/12/2006 Site Information Sub Area Location: ONSITE Drainage Area (DA) = 33.16 Acres Impervious Area (IA) = 19.97 Acres Percent Impervious (I) = 60.2 Required Surface Area Permament Pool Depth: SA/DA = Min Req'd Surface Area = Required Storage Volume: Design Storm = Determine Rv Value = Storage Volume Required = 3 5.02 72,511 1 0.05 + .( 71,261 _ft _(85% TSS Removal SA/DA Ratio for Coastal Counties _sf (at Permanent Pool) _inch (Project Does Not Drain to SA waters) 109 (I) = 0.59 in/in cf (above Permanent Pool) Elevations Top of Pond Elevation = TBD ft Temporary Pool Elevation = TBD ft Permanent Pool Elevation = TBD ft Bottom of Pond Elevation = TBD ft Wet Basin AreasNolumes Area @ Top of Temporary Pool = 75,647 sf Area @ Top of Permanent Pool = 74,157 sf Volume of Temporary Storage = 72511 cf Side Slopes of Pond = 3 : 1 Is Permanant Pool Surface Area Sufficie nt (yes/no)? Volume of Storage for 1" Storm = 72511 Suggested Area for Pond 2.75 ac. (Approx. 0.93' above perm. Pool) (4 in. Orifice Elev. ) (Elev =TBD) (Elev =TBD) Perm. Pool Elev (TBD') to Slot Elev (TBD')) Yes ( 74157 > 72511 ) sf Yes ( 72511 > 71261 ) cf (Elevation TBD' to TBD' ) 1 t i 1 f 1 1 1 1 f 1 1 1 1 ~ Kimley-Horn C ~ ~ and Associates, Inc. BIORETENTION AREA Project Information Project Name: KHA Project #: Designed by: Revised by: Revised by: Checked by: Whispering Pines Road, Washington, NC 116205000 JPK Date: 10/12/2006 Date: Date: Date: Site Information Sub Area Location: Drainage Area (DA) _ Impervious Area (IA) _ Percent Impervious (I) _ Required Surface Area ONSITE -BIORETENTION 5.00 Acres 5.00 Acres 100.0 Area C C x Area (ft"2) _ Impervious Area = 217,800 0.95 206,910 Pervious Area = 0 -0.25 0 Total = 217,800 : ;`~~~~ : 206,910.00 Bioretention Area Size Needed = 10,345.50 Area @ Top of Permanent Pool = 5,338.00 Is Area Needed < Area Available? NO *Bioretention Area Size (5% Sum of C x Area) Suggested Area For Bioretention 0.25 ac. each 1 1 1 1 1 Tar-Pamlico Stormwater Rule 15A NCAC 28 .0258 Coastal Plain of the Tar-Pamlico River Basin: includes Greenville and Washineton as well as Pitt and Beaufort Counties Last Modified 10/11/2006 ~tal Nitrogen and Total Phosphorus Loading Calculation Worksheet (Automated) Project Name: Whispering Pines Road and 15th Street Date: 10/9/2006 By: Jason Kennedy Checked By: Directions (same for pre-development and post-development tables): > Enter the acres of each type of land cover in the green boxes. The spreadsheet will calculate all of the values in light blue. > Compare total areas of development in pre- and post- tables for consistency (bottom of column (2)), and also for consistency with the site plans. If all of these values are not the same, there is an error that must be corrected. > Unless drainage onto the development from offsite is diverted around or through the site, offsite catchment azea draining in must be included in the acreage values and treated. Pre-development: :::.:.. ... , g: ;:: ~ ? .. . ~ ofdandC'rsu~r :::::::::::::: :::::Arai:::::: Slvlaoriiiiuki. ~'r" C: ..A..e,.a eEM... . :Galtifnii:::: . C era ` »M Av ....~?................ taiiiii::: :Ca ........................ ::::::::::::::::::::< :::::::;::;::::;:;:;::; :;:;: acres::::: :: ;:. OSt~9.>la< :: :::ot'Tl~'. ii- /G '::: 2 :~; 3 :~::4 : :::af T.1': iu fJ;~ :::. :~:: ::: 2 :.:. 3 :.: ~~ `l~aiiepiirtatian itgperi'iou5 :: 0:51 2.60 0.00 0.19 0:00 vious' ~:::': ': Roaf imper :.:.:. ::.:..... . 0.5 1 1.95 0.00 0.11 0.00 11~~trii~ed perYious '; O.Si' 1.42 0.00 0.28 0.00 :Managed pervious 0:51 4.23 52.75 1.23 15.34 15'J(atsaged nervous..: < ` .: 0:51 2.04 0.00 0.62 0.00 ,, .. . .:.: (pasture) Wrailed~perVious;:`::` 0.51 0.95 4:22 0.14 0.62 : :: p`~'act3oi~amperviots {T}'=' ` 0.00 €`I'k~ Leading 56.97 ~'I%Laadiug 15.96 ; . `>€`at~l ~r~a of Uevelo-pment 33.16 :.. TN)~~rp Coe~t . ' 1.72 ;~x1'~aip:~Goeft ~ 4 :: 0. 8 ::.. :.:...:.:... c~yr) : :. (lblaclyr) .: Post-deve[opntent: `Gyps of Land Cover Areti :~ :~ ~~~~~ For.-iiuta ~S l~L :Aver~~~~e`.:FAiC~: ag ..; ... ::;Cvtuiii:: :z3~~ra ~e~MC: g... ~oluiiiri: , ~ct•es 4 51.~:91'I< . :::o#'TN fii'fb :':: '! 3 *. '4 af'I'1': iii fl....:: 2 * '~. TrarisporfaYtan neper~ iuus ' 5.99 2.60 248.73 0.19 18.1$ .Roof iinpcruious 5.99 1.95 46.72 0.11 2:64 '. a~ianaged pervious 5.99 1.42 112.20 0.28 22.12 Wrsoded per iouS ; 5.99 0.94 0.00 - 0.14 0.00 HYactiott Impei-~iou5 ~I} ': 0.60 ':. TN I,aadt4 407.65 '.:. ~'l~ Goa~11~~ 42.94 Total ~rra Uf ©cvelop-nenf = : .. 33.16 ' TN Exp ~qe€f ~ (Ifs%a~t/yr) I2.29 T`P:~icp: fi~ieff, ~. (~biacfyr). 1.29 Note: The nutrient loading goals are 4.016/ac/yr for TN and 0.4 lb/ac/yr for TP. If the post-development nutrient loading is below these levels, then no BMP is necessary. Otherwise, the next worksheet calculates post-development TN and TP loadings after BMPs are installed. t Tar-Pamlico SformwaterRule 15A NCAC 28.0258 Coastal Plain of the Tar-Pamlico River Basin: 1 1 1 1 1 t 1 1 Last Modified 5/23/03 lncluoes lireenvule ana wasmngton as wen as rtn ana rseaurort ~,ounues BMP Removal Calculation Worksheet (Automated) Project Name: Whispering Pines Road and 1 Sth Street Date: IOf9/1006 By: Jason Kennedy Checked By: I> It may be advantageous to split the development into separate catchments to be handled by separate BMPs. The tables below allow the development to be split into as many as three catchments, and can be copied for greater than three. NOTE: Unless runoff > Above each table: Enter the catchment acreage in [he top green blank. Based on a comparison ofthe post-development TN and TP I /export coefficients you calculated above to the rule requirements of 4.0 Ib/ac/yr TN and 0.4 Ib/ac/yr TP, select BMP(s) from t > Catchment Tables: Enter the acres of each type of land cover in the green boxes. The spreadsheet will calculate all of the light blue boxes. NOTE: Compare the Total Catchment Acreage for the Development (final table) to the value you established in th :TN'? ;'..`1^ ............ ......s. .....,..aft.. a~................... BMP '.1'l'e`DetedtiariPoii': 25 40 NC BMP Manual Nutrient $torsi~i'sterl{!etlarid 40 35 NC BMP Manual Removal ~~i}1itlFliter'~~ ? 35 45 NC BMP Manual Rates ;i: ~~or~icp~liii~ 35 45 NC BMP Manual GrassS~iales!;? 20 20 NC BMP Manual 'S?egetted~'ilter ~ti~.ipiw%; ' 20 35 NC BMP Manual €:C;eve15 resiler::::: ;Diy`Dceiita[ 10 10 NC BMP Manual Catchment 1: Total acreage of catchment 1 = ac First BMP's TN removal rate = % First BMP's TP removal rate = Second BMP's TN removal rate = % Second BMP's TP removal rate = Third BMP's TN removal rate = % Third BMP's TP removal rate = TOTAL TN REMOVAL RATE = 25 % TOTAL TP REMOVAL RATE _ ' 40 i 1 j ' '' : ::::: . .. ... FF~over;::;`::: ................ Type:a.;i,an .... :Gstchmen# .. S~h Foriritila: #~er'a e~MCo : ~,....,........,.. :: o '' :.C. lump €; ,........•....... ; ... r '' M :~ ~cye..age.)E...G .... .............:;............... ,~ >": :: Coumn.. ............. . .............~......... . '•Atcrea ` tt.~l ..9.1.i .: ;':'.'C'iV a t~ 4:. 4 ' /[; ::. ; 2:::: 3:::: g ''I;ransportatian~mperv~ous : : 5.99 2.60 ' 248:73- 0.19 18.18 :Rov€impE~Ywus 5.99 1.95 46.72 0.11 2.64 `1Wtaaaged perp~uus 5.99 1.42 88.81 0.28 17.51 Wooded:perti iaus ! 5.99 0.94 0.00 0.14 0.00 alxt;f.taktu iip iiyBiViP 5.99 1.95 32.12 0.11 1.81 1?raclion lmpcfv~ous ~I} 0.60. ~~`e'$~T:. 416.38 Pr>~~Bly1P'rP 40.14 . .,:.:goad (Itityr)::; Load (Ibtyi;'.= "~ptalArcavtl)evelopmegt 33.16' ~ Prt$A~~` 12.56 P~'e_B~'IT'~'~ 1.21 ~xpai?C(Iblaelgr TacpoiY (Ib/aclyr) >'cst BMl' TP1 312.29 Post~6l><11"'1'P 24.08 ., f.oad:[lb(yr.): 3~oad.(Ibl~r}= 1'osEB111P:T1V 9.42. PoStB~'T1T. .. 0,73 ~xp4rt(Ibtac/yr )Lxp<rt (Il>/sclyr) 1 Tar-Pamlico Stormwater Rule 15A NCAC 26.0258 ~" Last Modified 5/23!03 Catchment 2: Total acreage of catchment 2 = ac First BMP's TN removal rate = ' % First BMP's TP removal rate = Second BMP's TN removal rate = % Second BMP's TP removal rate = Third BMP's TN removal rate = % Third BMP's TP removal rate = TOTAL TN REMOVAL RATE _ ' 0 % TOTAL TP REMOVAL RATE = 0 ..................... ...~ . b'.:::'.'. ':'.::'.:'.'. T . e:oC~;ao~iroVx~::::: .. . ;C`achineut'. :Si1~I~oi'iiipla: Aver~grEMC;ii : ::Co€uirin.... ... .-.....rage:: MC Omit:::: ..:........:. . . . ..":.:. ".:..:~. ..:.: .r4arsa e.:: . II 51 s'.9.1 •:TN tri` It.... . 2 a. 3. : 4 . ...3'P: m f]€.:=. 2...: 3 .~ :~'rusjirirtatiogiiii}zervioss~~ 2.60 0.19 ;Rpoltripervious '; 1.95 0.11 lkl9naged"pervious::,..:' 1.42 0.28 W tided pCryioiis . "....: 0.94 0.14 ?lrea taken.up:bY $~`I#` 1.95 0.11 ~'re~~NiP TN t're R~?~`~'~' ~tsctibn #m}iei•vious (I)= #,oad.(#b/yr) . 3,bad llb/fir}= ;::::::. ..: MP Tai ~Ipre.B ' °Bi4t 'T~ rep 1?`.. ....~. ~ Total Area of gevRtopment= :: " 0.00 ~" •"' ~$pQi•t(iata~c/n .. ~xpei~i'(Iti/ae~yr} ::..:.. ..... "P ::..Past.BM T . ast Bt-'IP'TP' h! r ' ~,oad Y i.nad dbf~r ) . Y :::: :::.::::::. •. ... rE:;:;:;:;::::.::: ::. g .:.: Pos ....~P.~ . :.:.:Poe $Mg:"." . .:.:.:.t ................. `~~~ ;:o..: / c _~ >;x '.~~: Urfa " "as Catchment 3: Total acreage of catchment 3 = ac First BMP's TN removal rate = % First BMP's TP removal rate = Second BMP's TN removal rate = % Second BMP's TP removal rate = Third BMP's TN removal rate = % Third BMP's TP removal rate = TOTAL TN REMOVAL RATE = U % TOTAL TP REMOVAL RATE = 0 ( 1 . . . . . . . . . . "3 . . . . . . . q :::::: ...( ......... ..... . :::::'.: :":::: ...........(~)......... . G : .. . ....... (.1...... €(9l ...................... . . ........ . . . . Type Qf #.an~Cave~ ; ............... . . . catchment .. ....... . . . . . 5.~~ Formula ............. Average~MG o" `. o ~ :. G 3umt€,. . ` . ~ 'r'"'"' Avc .a eUMC ... g .. • " of ~ . umu " '' ;' .. ' 1~lcrea e . U 51 k91 i . " 'C-w. tti !L d 2 • 3 • ::TP` tri' 1I; : 2 lr Ttairsportatian ~mperv~ous . 2.60 0.19 ltvvf imt~eFVr045 ~ 1.95 0.11 "Managed pervious:::' ': "' 1.42 0.28 Wooded pervwys.: 0.94 0.14 Ar~aaskCnup by BT1IP 1.95 0.11 Pi•e131V1F T ::Pri<.B1VIP'1'1' )7raction Imper3 Boas ~I} . Taoad"(#b1Yr}":, ; ~vad (Ibfpr}.° : Prc+$lY1P 7` 1Pi'e-$t1I1? T~ ~re:i of 1)e~ etvpment Totxl 0.00 . Export(Ib~acfgr 1'sxpori (Ilr/ac/yi-) ":Pest Bid TAT T'ost.B~?P"t'P !: :;.>~oad ~#bl~r) " €:~oad (Ib/fir}= 1'ostBMP T'!V '•:; Post:BlklP:. ` . '` ~zporf(Ib7aKYyr t?z~a!?(Ih/srfyr'l 1 1 1 1 1 1 1 1 u 1 Tar-Pamlico StormwaterRule 15A NCAC 28.0258 Last Modified 5/23/03 ~ r ~ ~ r~ ~ ~ r ~ r r rs r . ~ it ~ ~ +~ Whispering Pines & 15th St. Washington, NC Pre vs. Post Summary Pre-development Pre-Onsite Onsite Totals Offsite - 100 Offsite - 200 Offsite - 300 Offsite - 400 Offsite - 500 Offsite Totals Descri lion Onsite/Offsite Total Im ervious Pervious Wooded __~> , =' s ~ =~'=~ ac ac ac ac % Im ervious Grassland & Woods Onsite 33.16 0.00 24.45 8.71 0.00% 33.16 ' 0.00' 24:45 8.71 0.00% Woods Offsite 0.83 0 0 0.83 0.00% Grassland Offsite 2.41 0 2.41 0 0.00% Parkin Lot Offsite 1.12 0.67 0.45 0 59.82% Housing Development Offsite 1.86 1.21 0.65 0 65.05% Housina_ICommunitvCenter Offsite 4.31 1.46 2.85 0 33.87% ,~`~~ ' ~ ~~ :?: 10.53 3.34 6.36 0.83 31.72% ~,._. - ;':rr -1;~~h ~ ~,'Ft fi'~``A,°~"~"~~.S~c~Y~}3sr~~ y~Ny-'~~s)^~W }~{' S.?"., ~~ Post-development Descri lion Onsite/Offsite Total Im ervious Pervious Wooded % Im ervious Post-100 Retail Development Onsite 33.16 19.97 13.19 0.00 60.22% Onsite total 33.16 19.97 13.19. 0'.00 60.22% Offsite - 100 Offsite - 200 Offsite - 300 Offsite - 400 Offsite - 500 Offsite Totals Peak Flow Summary Woods Offsite 0.83 0 0.83 0 0.00% Grassland Offsite 2.41 0 0 0 0.00% Parkin Lot Offsite 1.12 0.67 0.45 0 59.82% Housing Development Offsite 1.86 1.21 0.65 0 65.05% Housing/Community Center Offsite 4.31 1.46 2.85 0 33.87% `-;,; ~, ;.a~{.`~o -;~ ~ `_"~;" ;+'-3:<< 10.53 3.34 4.78 0.00 31.72% Pre-Development Post-Development (unrouted) Post-Development (routed) Net Reduction 1-rcfs 2-rcfs 10-rcfs 50.43 65.65 133.17 128.83 155.55 265.42 34.46 57.07 130.92 31.67% 13.07% 1.69% 1019/2006 JPK ~, :., .;..:. Pre-Dev-Ons ite 1 1 ~ Pre-Dev-Offsite 1 1 1 0 d~~~~~ Ott - p~~~lo~~~ ~~ POA A Addlink 20 t 1 1 1 1 1 1 1 1 1 1 1 1 Type.... Master Network Summary Page 1.01 Name.... Watershed File.... H:\PN\116205000\Stormwater\PdPK\Pre-Dev.ppw MASTER DESIGN STORM SUMMARY Network Storm Collection: MyCounty Total Depth Rainfall Return Event in Type RNF ID 1 3.7000 Synthetic Curve TypeII 24hr 2 4.2500 Synthetic Curve TypeII 24hr 10 6.5000 Synthetic Curve TypeII 24hr MASTER NETWORK SUMMARY SCS Unit Hydrograph Method (*Node=Outfall; +Node=Diversion;) (T run= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID Type Event Trun cu~ft hrs cfs ft ---cu.ft---- --------- ------- *POA A JCT ------ 1 -- --- -- 229962 --------- 12.2000 --- -- 50.93 ------;-~-, P ~QE -yc.bw M~'r *POA A JCT 2 299937 12.2000 65.65 ~~kK Lows *POA A JCT 10 588222 12.2000 133.17 PRE-DEV-OEFSITE AREA 1 71599 12.1500 17.30 PRE-DEV-OFFSITE AREA 2 89186 12.1500 21.67 PRE-DEV-OFFSITE AREA 10 165967 12.1500 40.29 PRE-DEV-ONSITE AREA 1 158913 12.2500 33.57 PRE-DEV-ONSITE AREA 2 205751 12.2000 49.90 PRE-DEV-ONSITE AREA 10 422259 12.2000 99.00 S/N: FFYXYWH383DA PondPack (10.00.016.00) 2:00 PM Kimley-Horn & Associates 10/9/2006 e i i i Type.... Design Storms Page 2.01 Name.... MyCounty File.... H:\PN\116205000\Stormwater\PdPK\Pre-Dev.ppw Title... Project Date: 10/5/2006 Project Engineer: JPK Project Title: Whispering Pines Project Comments: DESIGN STORMS SUMMARY Design Storm File,ID = MyCounty Storm Tag Name = 1 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 1 yr Total Rainfall Depth= 3.7000 in Duration Multiplier = 1 Resulting Duration = 29.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 29.0000 hrs Storm Tag Name = 2 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 2 yr Total Rainfall Depth= 9.2500 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = 10 Data Type, File, ID = Synthetic Storm TypeII 29hr Storm Frequency = 10 yr Total Rainfall Depth= 6.5000 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 29.0000 hrs S/N: FFYXYWH383DA PondPack (10.00.016.00) 2:00 PM Kimley-Horn & Associates 10/9/2006 Type.... Tc Calcs Name.... PRE-DEV-OFFSITE File.... H:\PN\116205000\Stormwater\PdPK\Pre-Dev.ppw ........................................................................ TIME OF CONCENTRATION.CALCULATOR ........................................................................ Segment #1: Tc: TR-55 Shallow Hydraulic Length 60.00 ft Slope .001300 ft/ft Unpaved Avg.Velocity .58 ft/sec Segment #1 Time: .0286 hrs Segment #2: Tc: TR-55 Channel Flow Area 7.5000 sq.ft Wetted Perimeter 8.91 ft Hydraulic Radius .89 ft Slope .003000 ft/ft Mannings n .0500 Hydraulic Length 921.00 ft Avg.Velocity 1.96 ft/sec -----------------------------------------Segment-#2-Time-------0804-hrs Segment #3: Tc: TR-55 Channel Flow Area 7.5000 sq.ft Wetted Perimeter 8.71 ft Hydraulic Radius .86 ft Slope .001000 ft/ft Mannings n .0500 Hydraulic Length 607.00 ft Avg.Velocity .85 ft/sec Segment #3 Time: .1977 hrs ------------------------------------------------------------------------ Page 3.01 S/N: FFYXYWH383DA PondPack (10.00.016.00) 2:00 PM Kimley-Horn & Associates 10/9/2006 Type.... Tc Calcs Name.... PRE-DEV-OFFSITE File.... H:\PN\116205000\Stormwater\PdPK\Pre-Dev.ppw Page 3.03 ------------------------------------------------------------------------ Tc Equations used... ------------------------------------------------------------------------ SCS TR-55 Shallow Concentrated Flow Unpaved surface: V = 16.1345 * (Sf**0.5) Paved surface: V = 20.3282 * (Sf**0.5) Tc = (Lf / V) / (3600sec/hr) Where: V = Velocity, ft/sec Sf = Slope, ft/ft Tc = Time of concentration, hrs Lf = Flow length, ft ___= SCS Channel Flow __________________________________________________ R = Aq / Wp V = (1.99 * (R**(2/3)) * (Sf**-0.5)) / n Tc = (Lf / V) / (3600sec/hr) Where: R = Hydraulic radius Aq = Flow area, sq.ft. Wp = Wetted perimeter, ft V = Velocity, ft/sec Sf = Slope, ft/ft n = Mannings n Tc = Time of concentration, hrs Lf = Flow length, ft S/N: FFYXYWH383DA PondPack (10.00.016.00) 2:00 PM Kimley-Horn & Associates 10/9/2006 t 1 1 1 1 1 1 t 1 i Type.... Tc Calcs Name.... PRE-DEV-ONSITE File.... H:\PN\116205000\Stormwater\PdPK\Pre-Dev.ppw TIME.OF.CONCENTRATION•CALCULATOR ........................................................................ Segment #1: Tc: TR-55 Sheet Mannings n .0500 Hydraulic Length 260.00 ft 2yr, 29hr P 4.0000 in Slope .005800 ft/ft Avg.Velocity .39 ft/sec Segment #2: Tc: TR-55 Shallow Hydraulic Length 89.39 ft Slope .019300 ft/ft Unpaved Avg.Velocity 1.93 ft/sec Segment #2 Time: .0129 hrs ----------------------------------------------------------------------- Segment #3: Tc: TR-55 Channel Flow Area 7.5000 sq.ft Wetted Perimeter 8.71 ft Hydraulic Radius .86 ft Slope .095000 ft/ft Mannings n .0500 Hydraulic Length 247.00 ft Avg.Velocity 5.72 ft/sec Segment #1 Time: .2137 hrs Page 3.04 Segment #3 Time: .0120 hrs ________________________________________________________________________ S/N: FFYXYWH383DA PondPack (10.00.016.00) 2:00 PM Kimley-Horn & Associates 10/9/2006 1 t 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Type.... Tc Calcs Name.... PRE-DEV-ONSITE File.... H:\PN\116205000\Stormwater\PdPK\Pre-Dev.ppw Page 3.06 ------------------------------------------------------------------------ Tc Equations used... ------------------------------------------------------------------------ ___= SCS TR-55 Sheet Flow ______________________________________________ Tc = (.007 * ((n * Lf)**0.8)) / ((P**.5) * (Sf**.4)) Where: Tc = Time of concentration, hrs n = Mannings n Lf = Flow length, ft P = 2yr, 29hr Rain depth, inches Sf = Slope, g __-= SCS TR-55 Shallow Concentrated Flow _______________________________ Unpaved surface: V = 16.1395 * (Sf**0.5) Paved surface: V = 20.3282 * (Sf**0.5) Tc = (Lf / V) / (3600sec/h r) Where: V = Velocity, ft/sec Sf = Slope, ft/ft Tc = Time of concentration, hrs Lf = Elow length, ft S/N: FFYXYWH383DA PondPack (10.00.016.00) 2:00 PM Kimley-Horn & Associates 10/9/2006 1 1 1 i i 1 1 1 1 1 1 1 1 Type.... Tc Calcs Page 3.07 Name.... PRE-DEV-ONSITE File.... H:\PN\116205000\Stormwater\PdPK\Pre-Dev.ppw ___= SCS Channel Flow __________________________________________________ R = Aq / Wp V = (1.49 (R**(2/3)) * (Sf**-0.5)) / n Tc = (Lf / V) / (3600sec/hr) Where: R = Hydraulic radius Aq = Flow area, sq.ft. Wp = Wetted perimeter, ft V = Velocity, ft/sec Sf = Slope, ft/ft n = Mannings n Tc = Time of concentration, hrs Lf = Flow length, ft S/N: FFYXYWH383DA PondPack (10.00.016.00) 2:00 PM Kimley-Horn & Associates 10/9/2006 1 1 1 1 1 1 i 1 1 i i 1 1 1 1 1 Type.... Runoff CN-Area Name.... PRE-DEV-OFFSITE File.... H:\PN\116205000\Stormwater\PdPK\Pre-Dev.ppw RUNOFF CURVE NUMBER DATA ...........................................................::............. ------------------------------------ ---- ---------- ------------ Impervious ------------ Area Adjustment Adjusted Soil/Surface Description CN acres $C $UC CN Impervious Areas - Paved parking l0 98 3.340 98.00 Pasture, grassland, or range - good 74 6.360 74.00 Woods - good 70 .830 70.00 COMPOSITE AREA & WEIGHTED CN ---> .................................... .................................... .... .... 10.530 .......... .......... ............ ............ 81.30 (81) ............. ............. Page 4.01 S/N: FFYXYWH383DA PondPack (10.00.016.00) 2:00 PM Kimley-Horn & Associates 10/9/2006 1 1 1 1 1 1 1 i 1 1 1 1 1 1 1 1 1 Type.... Runoff CN-Area Name.... PRE-DEV-ONSITE RUNOFF CURVE NUMBER DATA -------------------------------------------------------------------------- Impervious Area Adjustment Adjusted Soil/Surface Description CN acres oC $UC CN Pasture, grassland, or range - good 79 29.450 74.00 Woods - good 70 8.710 70.00 COMPOSITE AREA & WEIGHTED CN ---> 33:160 72:95 (73) ............................ ....... ........................................................................... Page 4.02 S/N: FFYXYWH383DA PondPack (10.00.016.00) 2:00 PM Kimley-Horn & Associates 10/9/2006 i ii 1 ~~°.~~~:;~~ Addlink 10 Fbst-Dev-Onsite POND A ' ;, ~; - .~• ~.~:~~ Addlink 30 Post-Dev-Offsite ii n 1 POA A ' Type.... Master Network Summ ary Page 1.01 Name.... Watershed File.... H:\PN\116205000\Sto rmwater\PdPK\Po st-Dev.ppw MASTER DESIGN STORM S UMMARY ti ll t M C Network Storm on: ec Co oun y y ' Total Depth Rainfall Return Event in Type RNF ID 1 3.7000 Synthetic Curve TypeII 24hr 2 9.2500 Synthetic Curve TypeII 24hr 10 6.5000 Synthetic Curve TypeII 24hr MASTER NETWORK SUM MARY ' SCS Unit Hydrograph Method (*Node=Outfall; +Node=Di version;) (Trun= HYG Truncation: Blank=None; L= Left; R=Rt; LR=Left&Rt) Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID Type Event cu_ft Tru n hrs cfs cu.ft ft --------- ------- *POA A --- ------ JCT 1 --- -- -- 283555 R --------- 12.1500 --- -- 34.46 --- -- -- ~os} ~e.n-lob w~~--S{" ' *POA A *POA A JCT 2 JCT 10 362483 R 697384 R 12.1500 12.1500 57.07 130.92 `~ 1~1°`k- ~'loac POND A IN POND 1 295098 11.9000 122.13 POND A IN POND 2 356490 11.9000 146.84 POND A IN POND 10 614901 11.9000 247,87 POND A OUT POND 1 212007 R 12.2500 17.45 10.00 159189 POND A OUT POND 2 273298 R 12.1000 35.84 10.30 184608 ' POND A OUT POND 10 531416 R 12.1000 91.44 11.42 284940 POST-DEV-OFFSITE AREA 1 71549 12.1500 17.30 POST-DEV-OFFSITE AREA 2 89186 12.1500 21.67 POST-DEV-OFFSITE AREA 10 165967 12.1500 40.24 POST-DEV-ONSITE AREA 1 295098 11.9000 122.13 POST-DEV-ONSITE AREA 2 356490 11.9000 146.84 POST-DEV-ONSITE AREA 10 614901 11.9000 297.87 i 1 1 S/N: FFYXYWH38 3DA Ki mley-Horn & Associates PondPack (10.00 .016.00) 10:09 AM 10/11/2006 Type.... Design Storms Page 2.01 Name.... MyCounty File.... H:\PN\116205000\Stormwater\PdPK\Post-Dev.ppw Title... Project Date: 10/5/2006 Project Engineer: JPK Project Title: Whispering Pines Project Comments: DESIGN STORMS SUMMARY Design Storm File,ID = MyCounty Storm Tag Name = 1 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 1 yr Total Rainfall Depth= 3.7000 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = 2 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 2 yr Total Rainfall Depth= 4.2500 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = 10 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 10 yr Total Rainfall Depth= 6.5000 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 29.0000 hrs S/N: FFYXYWH383DA PondPack (10.00.016.00) 10:09 AM Kimley-Horn & Associates 10/11/2006 t 1 1 1 1 1 1 1 1 i i 1 1 1 1 1 Type.... Tc Calcs Name.... POST-DEV-OFFSITE File.... H:\PN\116205000\Stormwater\PdPK\Post-Dev.ppw Page 3.01 TIME OF CONCENTRATION CALCULATOR Segment #1: Tc: TR-55 Shallow Hydraulic Length 60.00 ft Slope .001300 ft/ft Unpaved Avg.Velocity .58 ft/sec Segment #1 Time: .0286 hrs ----------------------------------------------------------------------- Segment #2: Tc: TR-55 Channel Flow Area 7.5000 Wetted Perimeter 8.91 Hydraulic Radius .84 Slope .003000 Mannings n .0500 Hydraulic Length 421.00 sq.ft ft ft ft/ft ft Avg.Velocity 1.46 ft/sec -----------------------------------------Segment-#2-Time-------0804-hrs Segment #3: Tc: TR-55 Channel Flow Area 7.5000 sq.ft Wetted Perimeter 8.71 ft Hydraulic Radius .86 ft Slope .001000 ft/ft Mannings n .0500 Hydraulic Length 607.00 ft Avg.Velocity .85 ft/sec Segment #3 Time: .1977 hrs ------------------------------------------------------------------------ S/N: FFYXYWH383DA PondPack (10.00.016.00) 10:09 AM Kimley-Horn & Associates 10/11/2006 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Type.... Tc Calcs Name.... POST-DEV-OFFSITE File.... H:\PN\116205000\Stormwater\PdPK\Post-Dev.ppw Segment #4: Tc: TR-55 Channel Flow Area 7.5000 sq.ft Wetted Perimeter 8.71 ft Hydraulic Radius .86 ft Slope .002400 ft/ft Mannings n .0500 Hydraulic Length 754.00 ft Avg.Velocity 1.32 ft/sec Segment #4 Time: .1585 hrs ------------------------------------------------------------------------ Total Tc: .4652 hrs ------------------------- ------------------------- Page 3.02 S/N: FFYXYWH383DA PondPack (10.00.016.00) 10:09 AM Kimley-Horn & Associates 10/11/2006 Type.... Tc Calcs Name.... POST-DEV-OFFSITE File.... H:\PN\116205000\Stormwater\PdPK\Post-Dev.ppw ------------------------------------------------------------------------ Tc Equations used... ------------------------------------------------------------------------ SCS TR-55 Shallow Concentrated Flow Unpaved surface: V = 16.1345 * (Sf**0.5) Paved surface: V = 20.3282 * (Sf**0.5) Tc = (Lf / V) / (3600sec/hr) Where: V = Velocity, ft/sec Sf = Slope, ft/ft Tc = Time of concentration, hrs Lf = Flow length, ft ___= SCS Channel Flow __________________________________________________ R = Aq / Wp V = (1.49 * (R**(2/3)) * (Sf**-0.5)) / n Tc = (Lf / V) / (3600sec/hr) Where: R = Hydraulic radius Aq = Flow area, sq.ft. Wp = Wetted perimeter, ft V = Velocity, ft/sec Sf = Slope, ft/ft n = Mannings n Tc = Time of concentration, hrs Lf = Flow length, ft Page 3.03 S/N: FFYXYWH383DA PondPack (10.00.016.00) 10:09 AM Kimley-Horn & Associates 10/11/2006 1 1 1 1 1 1 1 1 1 1 1 Type.... Tc Calcs Name.... POST-DEV-ONSITE File.... H:\PN\116205000\Stormwater\PdPK\Post-Dev.ppw TIME OF CONCENTRATION CALCULATOR Segment #1: Tc: User Defined -----------------------------------------Segment-#1-Time-------0830 hrs Total Tc: .0830 hrs Calculated Tc < Min.Tc: Use Minimum Tc... -Use-Tc-=------0833-hrs- Page 3.09 S/N: FFYXYWH383DA PondPack (10.00.016.00) 10:09 AM Kimley-Horn & Associates 10/11/2006 Type.... Tc Calcs Name.... POST-DEV-ONSITE File.... H:\PN\116205000\Stormwater\PdPK\Post-Dev.ppw Page 3.05 ------------------------------------------------------------------------ Tc Equations used... ------------------------------------------------------------------------ ___= User Defined ______________________________________________________ Tc = Value entered by user Where: Tc = Time of concentration 1 1 S/N: FFYXYWH383DA PondPack (10.00.016.00) Kimley-Horn & Associates 10:09 AM 10/11/2006 1 1 ii 1 1 1 1 Type.... Runoff CN-Area Page 4.01 Name.... POST-DEV-OFFSITE File.... H:\PN\116205000\Stormwater\PdPK\Post-Dev.ppw RUNOFF CURVE NUMBER DATA ------------------------------------ ---- ---------- ------------ Impervious ------------ Area Adjustment Adjusted Soil/Surface Description CN acres $C °sUC -- ----- CN ------ -------------------------------- Impervious Areas - Paved parking l0 ---- 98 --------- 3.340 --- 98.00 Pasture, grassland, or range - good 74 6.360 74.00 Woods - good 70 .830 70.00 COMPOSITE AREA & WEIGHTED CN ---> 10.530 81.30 (81) S/N: FFYXYWH383DA PondPack (10.00.016.00) 10:09 AM Kimley-Horn & Associates 10/11/2006 ' Type.... Runoff CN-Area Page 4.02 Name.... POST-DEV-ONSITE RUNOFF CURVE NUMBER DATA Impervious ' Area Adjustment Adjusted Soil/Surface Description CN acres $C $UC ----- CN ------ -------------------------------- ---- Pasture, grassland, or range - good 74 --------- 13.190 ----- 74.00 ' Impervious Areas - Paved parking lO 98 19.970 98.00 ' COMPOSITE AREA & WEIGHTED CN ---> ........................................ 33:160 .......... ............ 88:45 (88) ............. S/N: FFYXYWH383DA PondPack (10.00.016.00) Kimley-Horn & Associates 10:09 AM 10/11/2006 r 1 1 1 1 1 1 1 1 1 1 Appendix A Index of Starting Page Numbers for ID Names ----- M ----- MyCounty... 2.01- ----- P ----- POST-DEV-OFFSITE... 3.01, 4.01 POST-DEV-ONSITE... 3.04, 4.02 ----- W ----- Watershed... 1.01 A-1 S/N: FFYXYWH383DA PondPack (10.00.016.00) 10:09 AM Kimley-Horn & Associates 10/11/2006 APPENDIX I LJ 1-11 TAR-PAMLICO RIVER BASIN i I N b d S M N mber Class Name of Stream n Subbas um er tream n ex ap u Chapel Branch TAROS 28-102-1 E30SW9 C;NSW ' Cheeks Mill Creek (Suggs Creek) TAR03 28-85 D28SE9 C;NSW Chellybelle Creek TAR08 29-42-2 F33NW7 SA;HQW Cherry Run TAR06 28-103-17 E30SE5 C;Sw,NSW Chicod Creek TAROS 28-101 F30NW3 C;NSW ' Chocowinity Bay TAR07 29-6-(1) E30SE8 SC; NSW Chocowinity Bay TAR07 29-6-(5) E30SE9 SB;NSW Chocowinity Creek TAR07 29-6-2-1-(8) E30SE8 SC;NSW ' Chocowinity Creek and Connecting Canals TAR07 29-6-2-1-(1) F30NE5 C;Sw,NSW Church Creek TAR07 29-34-40-9 F32NE5 SA;HQW,NSW Cindy Edwards Branch TAR07 29-6-2-1-3 F30NE2 C;Sw,NSW Clark Creek TAR07 29-34-34-5-3 E32SW9 SC;NSW Clark Creek TAR07 29-35-6-4 F32SE6 SA;HQW,NSW Clark Creek TAROK 29-73-6 E35SE1 SA;HQW Clark Mill Creek TAR07 29-34-11-(1) E33SW4 C;Sw,NSW ' Clark Mill Creek TAR07 29-34-11-(2) E33SW1 SC;NSW Cliftons Pond TARO1 28-30-1 D25NE1 C;NSW Cockrel Creek TAR08 29-77 G35NE5 SA;HQW Coker Creek TAR02 28-33-1.5 D26NW6 C;NSW Cokey Swamp TAR03 28-83-3 D27NE8 C;NSW Collie Swamp TAR06 28-103-4 D30SW5 C;Sw,NSW Compass Creek TAR02 28-72 C27SE8 C;NSW Conetoe Creek TAR03 28-87-(0.5) D29NW6 C;NSW ' Conetoe Creek TAR03 28-87-(2) D29SW7 WS-IV;NSW Conetoe Creek TAROS 28-87-(2) D29SW7 WS-IV;NSW Gut Convo TAR07 29-33-10-2 F32SE4 SA;HQW,NSW y Coole Creek TARO1 28-24 C255E1 WS-IV;NSW Coon Creek TARO1 28-11-5 B24SE5 C;NSW Corkenson Creek TAR07 29-34-25 E335W7 SC;NSW Corn Creek TAR03 28-83-2.5 D28SW4 C;NSW ' Cow Creek TAR07 29-35-6-3-3 F32SE6 SA;HQW,NSW Cow Gallus Creek TAR07 29-33-1-3 F32SE7 SA;HQW,NSW Cow Gut TAR07 29-34-7 E32SE3 SC;NSW Cow Haul Swamp TAR04 28-79-30-3 C285E6 C;Sw,NSW Cow Swamp TARO5 28-101-5 E29SE9 C;NSW Cowlick Branch TAR02 28-71 D27NE6 C;NSW Cowpen Branch TAR02 28-38 D27SW2 WS-IV;NSW,CA ' Cowpen Creek TAR08 29-49-2 F33NE7 SA;ORW Cox Creek TAR07 29-34-46-5 F32NE6 SA;HQW,NSW Crab Cove (Crabb Cove) TAROS 29-50 F33SE2 SA;ORW Crabtree Bay TAR07 29-34-13 E33SW4 SC; NSW Crabtree Creek TAR02 28-78-1-13-1 C26NW7 B;NSW:+ Cradle Gut TAR07 29-19-10 F31NE2 SC;NSW Crawford Creek TAR07 29-6-2 E30SE8 SC;NSW ' Crawford Mill Run TAR07 29-21-4-(1) F31NE7 C;NSW Crawford Mill Run TAR07 29-21-4-(2) F31NE7 SC;NSW Crisp Creek TAR03 28-87-1 D29NE8 C;NSW Cromwell Canal and Connecting Canals TAR03 28-82 D28SE3 C;NSW ' Crooked Creek TARO1 28-30 C25SW9 C;NSW Crooked Creek TAR07 29-34-27 E32SE9 SC;NSW Crooked Creek TAR07 29-34-50 F32NE9 SA;HQW,NSW ' Crooked Run TARO1 28-2 B23SE3 WS-IV;NSW Crooked Swamp TAR04 28-79-24 C27NW8 C;NSW Cross Swamp TAROS 28-101-5-1 F30NW1 C;NSW Page 4 of 18 _ U c~ C i y ~a yk N a ~ m ^~ r iw ~ O U E N1B'~25p RR+G ~ ~ ,~ ~ Q ~ a° 164.16.1Y w ~ -o c ~ w ~ ~,~ Y m u ~a ~' W 311E ~f ^ ; ~ x ~ ` ~ m a- °u m 5 d ~ ?~9 )6 m x ~ ~ \~~ 0~° ° ~\ mho 9 ~ \ € \ ~~ NUJ' z z i h '° ~ 3s~p L~, o w H ~ STORMMATEM1 DEfEM ~ \0+'¢ r ~1 U 6 ~ ~ ~ .~i F-1 O 6 \, 'y1 1 C+1 QI hhlji~Ii Z 0 ~+ U] ,._ . ~ ~ d ~$ ~ti0~ :i u r~ ,~ N~,~~ I ~' U 0 ~ a "2~IS''2w ~~ /~ iii ~n~ ~' o 568.4q• era ~ ~ _.% 1 V N E IMPS ~S~ m ~ 0.22 i 'I it 'T'1 r-- ' , ~ -`' 6 5F WERA,NDS ,NpALT j .. j 1 I Z N U Ug li e > ' PARCEL AREA B f. ' ' i ° u 12.2 Acrest ~~ ' I ~ . ~, 1 `~ ~_ 1 ~ .~, 1 I ;, Q >, ~~ c t ~ A«. ~ M I, ~ Z ~ P~ J j lilt m 1~^\\ CaC 6 s,ropMUTEF /~ W C a °e7EMTl0"M"° ~~ .` ~~ • 1 111 v' s ~' ~< ._---~"~r ~ ~' SHOPPING A ~ c o; ~ s' ,~ ~__ 4 to ,; 'hl1t SIGNER H e "'TWO" _ ~ UTPARO N~ ~ m 1'1; ~ ~ °S ~ .1 5 ~ Iryt ~ ~ Q s '1 06 ~ ~ ~ (7 ~ 415 PARKING SPACES 1, I ~..~ 1111 O ~ Q $ .1 I'll ~ e ~W ,~~ j "Fueling ~ ° -{~ n ,. - ~ y wr. ,w 1 1 n• N o r• ~re~ - -' .P t ~ r ti, ~ ~' ~ OUTPARCEL 2 ,q RES t O ~' . Aar ~ P 1 ~ 1.45_ '1,1 ~" 1 _ I 1 wz~. ~ ~lllyl'1 ~~~. ~ :wD~s I ',1'1, ~ j 11 i i '. -T--- j .v i L ;v,r; I - ~Rc, ~ 1 111 ~~ f I'~'~ f }~ ~, l Res Nanl I I 111 ~, I'1'I'II(J 1•~ , z 776.25 u~ 111,1; ~~ ~ ~ S38'S9'J7`E gti~y'`" 1 . ._.- _ -_- ------------ _ _ 0 -'--- ~_. w ~" - - ___ ------- ~ ° '- "-'- f- - "-"'- ~" ----_-"_' EXlS71NGANDOR`---..______ -- - ~ ~ ~ SHOPPING CENTER SIGN - - - j ~ ";~ ee = " %r S~AIE cYt NGNE 1 /(~, OE4CNE0 BY: 5~ piAAN 9Y: ORTH ~RC«m GY: Q! ogre ozn.o6 £ ~ NNA PPaecT NG.: P GRAPFNC SCALE 1162050W 1.100 SHEET NUMBER o as >BO1 1 OrmHg num. H: \PN\116205000\GMG\Nada\cmttpl N(MA.tl.g 11.1] /OJ .Wa Ocl 11, 2006 10:29an bx jo~m.kmnedy