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20081352 Ver 1_More Info Received_20081222
LMG A - ? '53-/ LAND MANAGEMENT GROUP INC. Environmental Consultants December 18, 2008 TO: Ms. Kim Garvey ?D U. S. Army Corps of Engineers DEC 2 2 2008 69 Darlington AvenueR . WAS Wilmington, NC 28403 W nJ0SMIpsTORM ? N RE: NWP 12 Application; Additional Information New Hanover County Northern Campus Regional Wastewater Collection System New Hanover County, NC Action ID# SAW-2008-02725 Dear Kim: Thank you for your letter dated November 26, 2008 in which you request additional information about the NWP 12 application we submitted for the New Hanover County Northern Campus Regional Wastewater Collection System. Below is a response to each of your comments. 1. Asper General Condition 20(a), please further describe how this activity has been designed to avoid and minimize adverse effects to waters of the United States to the maximum extent practicable. Because this line runs from Holly Shelter Road to North College Road, your project area has been defined by this office as all areas north and west of North College Road, east of Interstate 40 and south of Holly Shelter Road. Please provide this office with an alternatives analysis for all alternatives considered within your project area. A critical step in determining the locations of proposed sewer system improvements is to evaluate the existing infrastructure to meet current and future demands. The existing transmission main within this project's drainage area is a 12" force main. The existing force main begins in Pender County, crosses the Northeast Cape Fear River and generally parallels North College Rd. to its point of discharge to a gravity sewer manhole near Ashley High School. The existing force main also crosses Prince George Creek in the right-of-way of North College Road. No pump station currently exists in the area. While the existing 12" force main will be utilized initially to service the school flows, it is significantly undersized to accommodate the wastewater that will be generated from this basin. Therefore, the infrastructure designated in the wastewater master plan was developed to account for the wastewater projected in the basin. This infrastructure includes the following: New Regional Pump Station to Serve the "Project Area" - Regardless of whether a force mains or gravity sewer lines are utilized, a new regional pump station will be needed in this area. Due to the relatively flat topography of New Hanover County, pump stations are a necessary part of the wastewater collection and transmission system. However by minimizing the number of pump stations, www.lmgroup.net • info@lmgroup.net • Phone: 910.452.0001 • Fax: 910.452.0060 3805 Wrightsville Ave., Suite 15, Wilmington, NC 28403 9 P.O. Box 2522, Wilmington, NC 28402 the Cape Fear Public Utility Authority can minimize the chance of sewer spills and better protect the health of the New Hanover County Citizens and surrounding environment. In order to optimize the use of gravity sewer lines feeding into pump stations, wastewater pumping stations are constructed in the lower topographic elevations of a region. Several potential pump station sites were evaluated. Alternative Analysi.s,for Regional Pump Station Several sub-basins were evaluated to determine the feasible location for the regional pump station. The analysis completed for each of these sub-basins is outlined as follows (Refer to Attachment `A'): • NHC-C-OOIF-A - The elevations in this sub-basin and its relation to the surrounding area yielded that a regional pump station would not be feasible and could not serve the required Project Area. • NHC-C-OOIF-B -Similar to NHC-C-OO IF-A, this sub-basin was not suited topographically for construction of the regional pump station and was deemed not feasible. • NHC-C-OOIF-C - This sub-basin was located geographically the furthest distance from the Project Area and would require an additional wastewater pumping station be constructed in order to serve the area. • NHC-C-OOIF-L (Preferred Alternative) - The new regional pump station is proposed adjacent to Prince George Creek, as it is in the lower topographic elevations for the "Project Area". Regional Pump Station Conclusion/Recommendation Upon review of each alternative, it was determined that the proposed location of the Regional Pump Station adjacent to Prince George Creek (NHC-C-OOIF-L; Pump Station #1) provided the most advantageous location to serve the Project Area and to minimize infrastructure impacts to wetlands and the surrounding environment. No wetland impacts are needed to construct this pump station. Additionally, this regional pump station location provides for the immediate removal and abandonment of an existing wastewater pumping station serving the New Hanover County Jail on North College Road. It is also provides a future connection for removal and abandonment of the existing wastewater pumping station that serves Cape Fear Community College on Blue Clay Road. Once the general area of the proposed pump station was determined, the project engineers evaluated several different scenarios to connect existing and/or new sewer lines to it. Both force mains and gravity lines were analyzed. Sewer Force Main to Serve the "Project Area" The project will initially utilize the existing 12" force main located on North College Road as the connection point of the proposed pump station's force main. However, as demand for sewer service increases, a new force main would be required to parallel the existing force main. This additional force main line could be installed via directionally drilling with little or no wetland/stream impact. However, the number of pump stations and/or lines necessary for this alternative would increase. If the pump station is located on the north side of Prince George Creek, three lines would be needed across the creek, including one gravity line. If the pump station is located on the south side of the creek, a pump station would also be needed on the north side of the creek to increase the pressure in these lines and move the wastewater across the creek. Pump Station Located on North Side of Creek: • Maintain existing 12" Force Main Crossing that connects to PS on north side of creek • Install Gravity Sewer Crossing (Flowing South to North to PS) • Install additional 18" Force Main Crossing to carry flow from PS across creek • Results in three active pipelines located in wetland areas (two force mains and one gravity). Pump Station Located on South Side of Creek: Use existing 12" Force Main Crossing • Install additional 18" Force Main Crossing • Install pump station on north side of creek to move flow across creek • Results in two pump stations (one on north side and one on south side) As mentioned previously, one of the objectives of the WWMP is to minimize the number of pump stations because they are often a source of sewer spills; either because the pump station could not convey the amount of flow coming to it or because of a ruptured force main (i. e. Northeast Interceptor). Therefore, by using fewer pump stations, the chances of spills are reduced. In addition to increasing potential environmental issues with increasing the number of lines and/or pump stations, the force main alternatives would also increase costs. For these reasons, neither of the above-referenced alternatives was selected. Gravity Sewer Main to Serve the "Project Area" Gravity sewers are the most efficient and dependable means of providing sewer service to an area, as they require no pumps, electricity, or other mechanical means to convey wastewater. For these reasons, gravity sewer is proposed as the primary collection infrastructure for the Project Area (See Attachment `A') and the proposed school site. In order to convey the wastewater from the Project Area, the gravity sewer must cross Prince George Creek. The alternatives analysis consisted of two primary options: • Crossing of Prince George Creek Along North College Road - Specifics of this option are: Would add - 5,000 feet of length to the proposed gravity sewer to tie into the PS. The depth of the gravity sewer main and regional pump station would increase by approximately 12-15 feet. The regional pump station depth would likely become impractical to construct at this depth. The gravity sewer main would cross Prince George Creek along North College Road. However, NCDOT requires that all pipelines be constructed 5' within the existing right-of- way. Based on this, easements would be required outside of the maintained NCDOT right- of-way and impacts to Prince George Creek would be identical to those of the proposed location 3 Crossing ?of Prince George Creek as Currently Proposed - The proposed location provides the most advantageous location of the gravity sewer main. It adequately provides sewer service to the Project Area and is practical to construct in relation to the proposed regional pump station. The pipeline is designed and sized to serve the entire Project Area and basin, therefore, there will be no need to install an additional pipeline at a future date or incur future impacts. Gravity Sewer Main Conclusion/Recommendation The crossing of Prince George Creek as currently proposed adequately provides sewer service to the Project Area and minimizes the impact to the Creek. For these reasons, it is the recommended alternative. The North College Road alternative does not reduce wetland/stream impacts and would potentially lead to infrastructure that is impractical to construct. Based on this analysis, it was determined that a pump station located on the south side ofPrince George Creek with one gravity sewer crossing would allow the Cape Fear Public Utility Authority to serve the entire drainage basin while minimizing the number of pumping stations and minimize the number of active sewer pipeline crossing of wetland areas. 2. Special Condition 20 requires compensatory mitigation in most cases for impacts exceeding 0.1 acres and requiring a Pre-construction Notification. Both Special Condition 20 and Regional Condition 4.3.8 identify the establishment of permanently maintained right-of-way through forested wetlands as 'permanent " impacts and require the consideration of compensatory mitigation. The project drawings that you submitted on October 17, 2008 indicate that a 30 foot permanent easement will be maintained. Yherefore, you must submit a proposal addressing compensatory mitigation for these impacts. Please be aware that you must comply with the Corps Final Rule on Compensatory Mitigation for Losses of Aquatic Resources. As was discussed in the on-site meeting, a 30' wide easement will be periodically maintained. To mitigate for this permanent impact of 0.47 acres of wetlands (please see revised site plan), the applicant agrees to buy into the NC Ecosystem Enhancement Program for the restoration of 0.5 acre of riparian wetlands. In addition, five acres of adjacent wetlands will be preserved. There are no private mitigation banks available in the Cape Fear River Basin. This mitigation plan complies with the Corps Final Rule on Compensatory Mitigation. 3. You did not adequately describe measures you have taken to meet the terms of General Condition 23 and Regional Condition 4.1. Your October 17, 2008 letter indicates that jack and bore can be installed to grade with reasonable accuracy. Please specifically describe why this method is not used to avoid impacts to waters of the United States. Please note that the letter dated October 17, 2008 reads, "Although bore & Jack casing installation can be installed to grade with reasonable accuracy, it is not likely a bore of this size and length could be installed to the required accuracy. " The intent of this statement was to convey that bore & jack installation was not feasible for this particular installation. During design of this project, McKim & 4 Creed consulted with bore & jack contractors to determine the feasibility of this method for this project. Based on this, we ascertained a number of several reasons as to why this method is not feasible: Typical bore & jack consists of an auger inside of the steel casing pipe. The auger cuts and conveys material from the front edge of the casing pipe to the bore pit where it's removed and disposed of. This crossing is a gravity sewer main and must be constructed on a specific alignment and grade or slope. The auger cannot be "steered"; therefore the alignment and grade must be set and maintained during the entire operation. Typical bore and jack road crossings are 60 ft-80 feet in length, while the longest are normally 300-375 feet in length for gravity sewer. The proposed crossing would require a bore & jack of approximately 800 linear feet, which is well beyond current reliable mechanical technology. A bore & jack for this crossing for the length cannot be achieved the required accuracy and grade. Therefore, this method of installation was deemed not feasible. • Another obstacle for installation of this pipeline by bore & jack is the existing soil conditions. The existing soil conditions would not provide vertical support to the casing and it is possible that the casing would "sink" during the process and an accurate path or grade could not be maintained. Therefore, existing soil conditions would present a significant obstacle to a bore & jack installation. • Water control is yet another reason bore and jack casing installation would be extremely very difficult for this installation. The bore machine is located below grade of the proposed pipe, which is designed below the grade of the bottom of the standing water in the wetland. Traditional well pointing can be used to control water from entering the bore pit from the sides of the excavation, but there will be no way to control water entering from the casing pipe, around the auger, creating a major hindrance for installation by bore & jack. It is also noted that this crossing was evaluated for the feasibility of horizontal directional drilling (HDD). However, HDD is not practical for gravity sewer mains to be installed on specific paths or grades and is not a feasible alternative. 4. Regional Condition 4.3.3, Work Corridor Restrictions, requires site and project specific justification for work corridors exceeding 40 feet. The information provided in the October 17, 2008 submittal does not provide adequate justification as to why your work corridor must exceed the commonly acceptable 40 feet. After further discussions with the contractor, it has been determined that a 40-foot wide construction corridor is acceptable. This reduces initial impacts to 0.616 acres of wetlands and 40 LF of stream. Please see the revised site plan and PCN form. 5. This office is unable to determine if you meet the terms of General Condition 23 and Regional Condition 4.4. Please provide more detailed cross section drawings of the proposed crossing of Prince George's Creek and its adjacent wetlands so that this office may determine if the utility line, pile driven timbers and rock stabilizer will be at least two feet below the substrate. The utility line, pile driven timbers, and rock stabilizer will be installed a minimum of two feet below the 5 substrate. Additional details have been added to the enclosed plan sheet C-1. Sheet C-12 has also been enclosed which provides a detail of the proposed piling connection details. Please contact me if you have any additional questions. Thank you for your assistance with this project. Sincerely, Kim Williams Wetland Scientist Encl. C: Mr. Frank Styers, Cape Fear Public Utility Authority Mr. Michael Johnson, McKim & Creed Mr. Chad Coburn, DWQ Mr. Ian McMillan, DWQ Office Use Only: Fonn Version March 05 USACE Action ID No. DWQ No. L 3 d' (If any particular item is not applicable to this project, please enter "Not Applicable" or °lv/A .) L Processing 1. Check all of the approval(s) requested for this project: ® Section 404 Permit ? Riparian or Watershed Buffer Rules ? Section 10 Permit ? Isolated Wetland Permit from DWQ ® 401 Water Quality Certification ? Express 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 12 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ? 4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII, and check here: 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), check here: ? II. Applicant Information o ?C??ad? p 1. Owner/Applicant Information DEC 2 2 2008 Name: Cape Fear Public Utility Authority Mailing Address: c/o Mr. Frank Styers P.E. .. ? =R BRAKH 235 Government Center Drive Wilmington NC 28403 Telephone Number: (910) 799-6064 Fax Number: E-mail Address: 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Kim Williams Company Affiliation: Land Management Group Inc Mailing Address: P.O. Box 2522 Wilmington NC 28402 Telephone Number: 910-452-0001 Fax Number: 910-452-0060 E-mail Address: kwilliams&lm ooup.net Updated 11/1/2005 Pagel of 8 III. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: New Hanover County Northern Campus Regional Wastewater Collection System 2. T.I.P. Project Number or State Project Number (NCDOT Only): 3. Property Identification Number (Tax PIN): R01800-002-055-000; portion of R01100-009- 015-000• portion of several other parcels that the easement goes through 4. Location County: New Hanover Nearest Town: Wilmington Subdivision name (include phase/lot number): n/a Directions to site (include road numbers/names, landmarks, etc.): From Wilmington take 132 N. The project area begins at the intersection of NC 132 and Old Oakland Road (see vicinity map). 5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) Decimal Degrees (6 digits minimum): 34.3462° N 77.8892° W 6. Property size (acres): 8800 linear feet and 3 acre tract 7. Name of nearest receiving body of water: Prince George Creek 8. River Basin: Cape Fear River Basin (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: The project area consists of a sewerline easement. Part of this easement runs parallel with Old Oakland Road and the rest of the easement is undeveloped. Land use in the vicinity is largely residential or undeveloped. Updated 11/1/2005 Page 2 of 8 10. Describe the overall project in detail, including the type of equipment to be used: This project involves the construction of approximately 6,440 linear feet of 10-inch through 24-inch sewer main within existing and proposed utility easements and NC DOT R/W, as well as a wastewater pump station in New Hanover County NC Approximately 8 acres are estimated to be disturbed during construction The limit of disturbance will be a 40' wide corridor along the pipeline route and limits as shown around the proposed pump station site. This work will result in temporary impacts to 0.616 acres of 404 wetlands and 40 LF of stream. In addition 0.04. acre of isolated wetlands will be permanently impacted. A track hoe and bulldozer will be used to create the installation area and then restore to existing grade. Silt fences will be used to reduce erosion into adjacent wetlands and Prince George Creek. 11. Explain the purpose of the proposed work: This project will provide wastewater service to the New Hanover County School Board of Education's Northern Campus Middle & Elementary Schools and surrounding areas IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. The 404 wetland line was delineated by Land Management Group, Inc. in March of 2008 Kim Garvey of the U.S. Army Corps of Engineers field approved the wetland line in June of 2008. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. No additional wetland impacts are anticipated on this site. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. Each impact must be listed separately in the tables below (e.g., culvert installation should be listed separately from riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts, permanent and temporary, must be listed, and must be labeled and clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) should be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Updated 11/1/2005 Page 3 of 8 Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Provide a written description of the proposed impacts: The applicant proposes to temporarily impact 0.144 acre of 404 wetlands and 40 LF of stream, permanently impact 0.04 acre of isolated wetlands and permanently maintain 0.472 acre of 404 wetlands for the installation and maintenance of a sewer line. 2. Individually list wetland impacts. Types of impacts include, but are not limited to mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, n+_! , 1ie4 * varte .t„P to l,nth etnirtnre and flondinsr_ Located within Distance to Area of Wetland Impact Type of Wetland 100-year r Nearest Impact Site Number Type of Impact (e.g., forested, marsh, Floodpla Stream (acres) (indicate on map) herbaceous, bog, etc.) (yes/no) (linear feet) 1 Excavation/Fill Isolated no 1400 0.04 2a Excavation/Fill (Temp) Forested no adjacent 0.144 2b Excavation/Fill (Temp) Forested no adjacent 0.472 Vegetation mainten. (Perm) Total Wetland Impact (acres) 0.620 3. List the total acreage (estimated) of all existing wetlands on the property: approx. 5 acres 4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams mind he inrlnrlrfl Tn nnlc„late ncreaae_ multinly length X width. then divide by 43,560. Stream Impact v Perennial or Average Impact Area of Number Stream Name Type of Impact Intermittent? Stream Width Length Impact (indicate on map) Before Impact (linear feet) (acres) 2a Prince George Creek Excavation /Fill perennial 20 40 0.0184 Total Stream Impact (by length and acreage) 40 0.0184 5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.). Open water impacts include, but are not limited to fill excavation dreduinu_ flooding- drainage. bulkheads. etc. Open Water Impact v Name Waterbody Type of Waterbody Area of Site Number (if applicable) Type of Impact (lake, pond estuary, sound, bay, Impact (indicate on map) ocean, etc.) (acres) N/A Total Open Water Impact (acres) Updated 11/1/2005 Page 4 of 8 6. List the cumulative impact to all Waters of the U.S. resultiwz from the project: Stream Impact (acres): 0.0184 Wetland Impact (acres): 0.616 Open Water Impact (acres): N/A Total Impact to Waters of the U.S. (acres) 0.634 Total Stream Impact (linear feet): 40 7. Isolated Waters Do any isolated waters exist on the property? ® Yes ? No Describe all impacts to isolated waters, and include the type of water (wetland or stream) and the size of the proposed impact (acres or linear feet). Please note that this section only applies to waters that have specifically been determined to be isolated by the USACE. The applicant broaoses to impact 0.04 acre of isolated wetlands needed for the installation of a sewer line. 8. Pond Creation N/A If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ? uplands ? stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Current land use in the vicinity of the pond: Size of watershed draining to pond: Expected pond surface area: VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The temporary 404 wetland and stream impacts are necessary to install this sewer line in the northern nart of New Hanover County. The applicant had to work with several landowners in the area to obtain the easement and the flexibility in the placement of the line was limited. The construction corridor has been reduced to 40' in width to reduce wetland impacts. The engineer evaluated the option of directionally boring the stream crossing but this is a gravity line and the topography of the site did not support it The isolated wetland impact could not be avoided because of required manhole setbacks from wetlands. After the pipe has been installed across the stream this area (Impact #2) will be returned to natural grade The isolated wetland impact will be permanent. Vegetation within a 30' wide easement will be maintained Updated 11/1/2005 Page 5 of 8 VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on January 15, 2002, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o.enr.state.nc.us/ncwetlands/strmgide.html. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. Although Impact #2 will be returned to grade a 30' wide corridor will be permanently maintained. To mitigate for this 0.472 acre of disturbance, the applicant agrees to buy into the NC EEP for the restoration of 0.5 acre of riparian wetlands. In addition, five acres of adjacent wetlands will be preserved. 2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at (919) 715-0476 to determine availability, and written approval from the NCEEP indicating that they are will to accept payment for the mitigation must be attached to this form. For additional information regarding the application process for the NCEEP, check the NCEEP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please check the appropriate box on page five and provide the following information: Amount of stream mitigation requested (linear feet): n/a Updated 11/1/2005 Page 6 of 8 Amount of buffer mitigation requested (square feet): n/a Amount of Riparian wetland mitigation requested (acres): 0.5 Amount of Non-riparian wetland mitigation requested (acres): n/a Amount of Coastal wetland mitigation requested (acres): n/a IX. Environmental Documentation (required by DWQ) 1. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land? Yes ® No ? 2. If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No 3. If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No ? X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. 1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No 2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multii3liers. I I Zone* Impact Multiplier Required (sauare feed Mitigation 1 3 (2 for Catawba) 2 1.5 Total * Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. 3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Riparian Buffer Restoration / Enhancement, or Payment into the Updated 11/1/2005 Page 7 of 8 Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0244, or .0260. N/A XI. Stormwater (required by DWQ) Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. If percent impervious surface exceeds 20%, please provide calculations demonstrating total proposed impervious level. The proposed project will result in increased impervious surface coverage of 4200 sf, which is for manholes wet wells and gravel within the corridor. The project qualifies for a stormwater exemption. XII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. This sewer line will tie into an existing force main that runs to the Northside WWTP. XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ? No Is this an after-the-fact permit application? Yes ? No XIV. Cumulative Impacts (required by DWQ) Will this project (based on past and reasonably anticipated future impacts) result in additional development, which could impact nearby downstream water quality? Yes ? No If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent North Carolina Division of Water Quality policy posted on our website at http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: This project will not provide access to other tracts. XV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). (l ?, ? /,,,/ Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) 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N • k lar `"v a ooU ?In aN a W D mD 2 r N " x ? Zvi m? ? Na gq at3 Mail 4O .. FNVF ?aw w F-F? W W ? Inz JO 0 5 z O za M w UOU Qw E mF a I` - - ci ri < vi O O N N N B ? !n K N ? N osulofW 'wd sPOZ:S 500ZIOWWZ1'U'6uP'ZOOOfSSP-NO -UlUI16UI*Pi0 WPIPA$ IP*e$116u1*PIPOBIL0001fSBn:S 0 N I Q O ?n N a i ? N Cu 0.i m o m • ? U' y Of z 0 3 v e ( V \y N U © ^` ^ ,W V 4J 4 w 4 C Q ? h I aq, v c 0 0 0 4 ? O U c V `= w N LL I1{ 1 ? ? C m W C 0 0 0 o c ? ? ., y v 4 ? o m a, 0 3 II?? r ?) Q G M 9 C a O t . U f. L N a c 0 16 a ?8' ? FE cos Stem y PROGRAM November 24, 2008 Frank Styers Cape Fear Public Utility Authority 235 Government Center Drive Wilmington, NC 28403 Expiration of Acceptance: August 24, 2009 Project: New Hanover County Northern Campus Regional Wastewater Collection System County: New Hanover The purpose of this letter is to notify you that the North Carolina Ecosystem Enhancement Program (NCEEP) is willing to accept payment for impacts associated with the above referenced project. Please note that this decision does not assure that the payment will be approved by the permit issuing agencies as mitigation for project impacts. It is the responsibility of the applicant to contact these agencies to determine if payment to the NCEEP will be approved You must also enmplwith all 6`ther, state fedei al or local This acceptance is valid for nine months from the date of this letter and is not transferable. If we have not received a copy of the issued 404 Permit/401 Certification/CAMA permit within this time frame, this acceptance will expire. It is the applicant's responsibility to send copies of the permits to NCEEP. Once NCEEP receives a copy of the permit(s) an invoice will be issued based on the required mitigation in that permit and payment must be made prior to conducting the authorized work. The amount of the In Lieu Fee to be paid to NCEEP by an applicant is calculated based upon the Fee Schedule and policies listed at www.nceep.net. Based on the information supplied by you the impacts that may require compensatory mitigation are summarized in the following table. River Basin CU Location Stream (feet) Wetlands (acres) Buffer I (Sq. Ft.) Buffer II (Sq. Ft.) Cold Cool Warm Riparian Non-Riparian Coastal Marsh Impact Cape Fear 03030007 0 0 50 0.736 0 0 0 0 L Credits Cape Fear 03030007 0 0 100 1.472 0 0 0 0 Upon receipt of payment, EEP will take responsibility for providing the compensatory mitigation. If the regulatory agencies require mitigation credits greater than indicated above, and the applicant wants NCEEP to be responsible for the additional mitigation, the applicant will need to submit a mitigation request to NCEEP for approval prior to permit issuance. The mitigation will be performed in accordance with the Memorandum of Understanding between the N. C. Department of Environment and Natural Resources and the U. S. Army Corps of Engineers dated November 4, 1998. If you have any questions or need additional information, please contact Valerie Mitchener at (919) 715-1973. Sincerely, William D. Gilmore, PE Director cc: Cyndi Karoly, NCDWQ Wetlands/401 Unit Kim Garvey, USACE-Wilmington Chad Coburn, NCDWQ-Wilmington Kim Williams, agent File RP.stor"19 .. EnIta"... nYVt?;t o stag a?L UBENR North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-16521919-715-0476/www.nceep. net Nm Hanover County BdIew Hanover County R Profile Sales Residential Commercial Misc. Improvements Permits Land Values Agricultural Sketch Full Legal Exemptions Sub-parcel(s) Info Original Parcel Info Parcel Map PROPOSED PRESERVATION Page 1 of 1 I CONTACT US HELP NHC Tax Home > Reg.ister o= Dee - - Home Property Records Owner Address Parcel ID Advanced PARID:R01800-002-065-000 NEW HAN CNTY WATER/SEWER 4608 COLLEGE RD N CURRFN-i r;-'_0R Of1 j 1 Parcel Alt ID 323111.56.4521.000 Address 4608 N COLLEGE RD Unit City CASTLE HAYNE P Code - Ln1 Printable Summary Neighborhood 6240 Class GOV-Exempt Government r=1 Printable Version Land Use Code 958-Unused Land Living Units Acres 5.09 Zoning 1-2-INDUSTRIAL DISTRICT Legal Legal Description (5.09 ACRES) PRINCE GEORGE MILL POND Tax District FD Owners Owner NEW HAN CNTY WATER/SEWER City WILMINGTON State NC Country Zip 28403 THE DATA IS FROM 2008 Data Copyright New Hanover County [Disclaimer] [Privacy Policy] Last Updated: 17 Nov 2008 Site Design Copyright 1999-2006 Akanda Group LLC. All rights reserved. http://etax.nhcgov.comIFormsIDatalets.aspx?UseSearch=no&pin=RO1800-002-065-000 11/20/2(;0' Map Output Page 1 of 1 http://wwwdefault. nhcgov.comiservletlcom.esri. esrimap.Esrimap?ServiceName=overview&ClientV ersi... 11/20/2008