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HomeMy WebLinkAbout20071214 Ver 1_401 Application_20070707Environmental Consultants, PA Road • Raleigh, North Carolina 27614 • Phone: (919) 846-5900 • Fax: (919) 846-9467 www.SandEC.com July 12, 2007 S&EC Project # 9894.W9 To: US Army Corps of Engineers Raleigh Regulatory Field Office Attn: Monte Matthews 6508 Falls of the Neuse Road, Suite 120 Raleigh, NC 27614 From: Nicole Thomson Soil & Environmental Consultants, P.A. 11010 Raven Ridge Road Raleigh, NC 27614 Re: Belmeade, Chatham County, NC N.C. Division of Water Quality 401 Oversight and Express Permits Unit Attn: Cyndi Karoly 2321 Crabtree Boulevard, Suite 250 Raleigh, NC 27604-2260 07-1214 On behalf of the owners, Belmeade Farms, LLC., please find attached a complete application and supplemental information requesting written concurrence from the U.S. Army Corps of Engineers (USACE) and the N.C. Division of Water Quality (DWQ) that the activities proposed below may proceed under Nationwide Permits 12 and 29 and General Water Quality Certifications 3625 and 3631. Please contact me at (919) 846-5900 if you have any questions or require additional information. PROJECT SUMMARY Project Name Belmeade Project Type Residential Subdivision and Utilities Owner / Applicant Belmeade Farms, LLC. County Chatham Nearest Town Pittsboro Waterbod Name Harlands Creek & UT's to Harlands Creek Basin / Sub-basin 03-06-12 Index Number 17-43-15 Class C USGS Cataloging Unit 03030003 IMPACT SUMMARY Stream Impact (acres): 0.190 Wetland Impact (acres): 0.005 Open Water Impact (acres): 0 Total Impact to Waters of the U.S. (acres) 0.195 Total Stream Impact (linear feet): 688.5 *Of the 688.5 linear feet of stream impact only 248.5 linear feet are permanent Attachments: Pre-construction Notification (PCN) Application Form NRCS Soil Survey Site Vicinity Map USGS Topographic Site Vicinity Map Agent Authorization Forms Overall Impact Map (1 I X 17) Impact Map Details (11 X 17) Overall Existing Conditions Map (24X36, DWQ only) Overall Impact Map (24X36, DWQ only) Intermittent and Perennial Determination signature sheet from NC DWQ and Supplemental Maps $475 Application Fee to DWQ ?R@fflgwll I DE N' - V i',k kU461" om .... Charlotte Office: 236 LePhillip Court, Suite C Concord, NC 28025 Phone: (704) 720-9405 Fax: (704) 720-9406 Greensboro Office: 3817-E Lawndale Drive Greensboro, NC 27455 Phone: (336) 540-8234 Fax: (336) 540-8235 Office Use Only: Fonn Version March 05 USACE Action ID No. DWQ No. 0 7- 1 2 1 4 k-- °w ru===emu-u- -=?ul 13 11v1 ILPP11Gdoic to finis project, please enter "Not Applicable" or "N/A".) 1. Processing r IPA 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: NWP 12 & 29 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: X 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 11 @ (!.1 Q ?'J MR O 1. Owner/Applicant Information j UL 1 2 1007 Name: Belmeade Farms LLC. , , . Mailing Address: 6208 Fayetteville Road Suite 104 Durham NC 27713 Telephone Number: (919) 806-3262 Fax Number: (919) 806-3792 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: Nicole J. Thomson Company Affiliation: Soil & Environmental Consultants PA Mailing Address: 11010 Raven Ridge Road Raleigh NC 27614 Telephone Number: (919) 846-5900 Fax Number: (919) 846-9467 E-mail Address: NThomsonna sandec com Page 1 of 9 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: Belmeade 2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A 3. Property Identification Number (Tax PIN): 9721-88-4042 4. Location County: Chatham Nearest Town: Pittsboro Subdivision name (include phase/lot number): Directions to site (include road numbers/names, landmarks, etc.):_ From Raleigh, take US 64 west towards Pittsboro• take the US 64 Bypass around Pittsboro• the subject propertis located adjacent to Highway 64 Business at the junction of Highway 64 Bypass and Hi hwgy 64 Business (west of Pittsboro) 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): 35.7230 ON 79.2411 °W 6. Property size (acres): +/- 555 arces 7. Name of nearest receiving body of water: Harlands Creek (030612• C• 17-43-15) 8. River Basin: Cane Fear River Basin (03030003) (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 subject property is currently undeveloped and has been selectively forested for timber during the past ten years The surrounding land use is a mix of undeveloped forested tracts and agriculture with some residential lots Page 2 of 9 10. Describe the overall project in detail, including the type of equipment to be used: The proposed project will be a single-family residential subdivision with the typical roads and utilities. The proposed impacts are due to roads and utilities connecting the various phases of the project to Highway 64 Business and the rest of the project The future lot layout and road corridors have been finalized and all efforts were made to minimize and avoid any unnecessary impacts. Voluntary riparian buffers as well as county buffers were set in the site plan in order to further protect the integrity of the streams Bridges or open bottomed culverts were designed in order to keep the cumulative impacts within the Nationwide Permit 29 thresholds and further minimize and avoid impacts Heavy equipment typical to this kind of work is to be used. 11. Explain the purpose of the proposed work: The purpose of the proposed development is to construct Belmeade and to provide additional housing for Chatham County including the Pittsboro area. 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. In August of 2006, S&EC conducted a record review at the State Historic Preservation Office for sites and structures of historical significance on the subject property. S&EC also conducted a file search for federally protected species at the Natural Heritage Program office The records check at the State Historic Preservation Office (SHPO) revealed that there are no structures on the property that appear on the National Registry (NR) Determination of Eligibility (DOE Study List SL), or Locally Designated (LD) lists The records search at the Natural Heritage Program revealed that no rare plants or animals are documented within the project boundaries S&EC also conducted a Threatened and Endangered species survey of the subject property in August 2006. Suitable habitat for the Carolina Ladle Crayfish and the Four toed salamander exists on property, but none of these species were observed No other state or federally listed species were found on property. In December of 2006, S&EC conducted a detailed delineation of the subject property. On June 13, 2007, Ms Lauren Cobb of NC DWQ conducted a site meeting verifying the Intermittent or Perennial calls on the streams located within the subject property boundaries The USACE is scheduled to conduct a site visit to verify the wetland delineation on August 8 2007 Survey maps of the wetland and stream features have been developed and will be submitted to the USACE under separate cover for signature and approval. Page 3 of 9 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 future permits are known to be required at this time 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. 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: Proposed permanent impacts include 248.5 linear feet of streams for the installation of the necessary roadwa infrastructure. Proposed temporary impacts include 0.005 acres of wetlands and 440 linear feet of streams for the installation of the necessary utilities The impacts are quantified and expounded on below. 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, separately list impacts due to both structure and flooding. Wetland Impact Type of Wetland Located within Distance to Area of Impact Site Number Type of Impact (e.g., forested, marsh, 100-year ' Nearest (acres) (indicate on map) herbaceous, bog, etc.) FloodP1am Stream es/no) (linear feet Crossing #2 Utility (Temporary) Riparian wetland no 0 0.005 Total Wetland Impact (acres) 0.005 3. List the total acreage (estimated) of all existing wetlands on the property: 9.274 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 must be included. To calculate acreage, multiply length X width, then divide by 43,560. Page 4 of 9 Stream Impact Number Stream Name Type of Impact Perennial or Average Stream Width Impact Length Area of Impact (indicate on ma) Intermittent? Before Impact (linear feet (acres) Crossing #1 g Harlands Creek Utility (Temporary) Perennial +/- 32' 57 0.042 Crossing # 2 g Unnamed Tributary to Harlands Creek Utility (Temporary) Perennial +/- 15' S7 0.020 Crossing #5 g Unnamed Tributary to Harlands Creek Utility (Temporary) Intermittent +/- 7' 72 0.010 Crossing #6 g Harlands Creek Utility (Temporary) Perennial +/- 27' 55 0.032 Crossing #7 g Unnamed Tributary to Harlands Creek Culvert/Rip Rap (Permanent) Perennial +/- 12' 88.5 0.020 Crossing #7 g Unnamed Tributary to Harlands Creek Utility (Temporary) Perennial +/- 12' 36 0.009 Crossing #7 g Unnamed Tributary to Harlands Creek Construction (Temporary) Perennial +/- 12' 7 0.001 Crossing #8 Unnamed Tributary to Harlands Creek Utility (Temporary) Intermittent +/- 10' 68 0.012 Crossing #8 g Unnamed Tributary to Harlands Creek Construction (Temporary) Intermittent +/- 10' 16 0.003 Crossing #9 g Unnamed Tributary to Harlands Creek Culvert/Rip Rap (Permanent) Intermittent +/- 9' 160 0.031 Crossing #9 g Unnamed Tributary to Harlands Creek Utility (Temporary) Intermittent +/- 9' 65 0.009 Crossing #9 g Unnamed Tributary to Harlands Creek Construction (Temporary) Intermittent +/- 9' 7 0.001 Total Stream Impact (by length and acreage) 688.5* 0.190 .,i the 688.5 linear feet of stream impact only 248.5 linear feet are permanent 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, dredging, flooding, drainage, bulkheads, etc. Open Water Impact Site Number Name of Waterbody Type of Waterbody Area of indicate on ma) Type of Impact (lake, estuary, pond, sound, bay, Impact ocean, etc.) (acres) N/A N/A N/A N/A 0 Total Open Water Impact (acres) 0 6. List the cumulative impact to all Waters of the U.S. resultin from the ro ect Stream Impact (acres): 0.190 Wetland Impact (acres): 0.005 Open Water Impact (acres): 0 Total Impact to Waters of the U.S. (acres) 0.195 Total Stream Impact (linear feet): 688.5* Of the 688.5 linear feet of stream impact only 248.5 linear feet are permanent Page 5 of 9 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. No isolated waters are known to exist on the subject property. 8. Pond Creation 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.): N/A Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): N/A Current land use in the vicinity of the pond: N/A Size of watershed draining to pond: N/A Expected pond surface area: N/A 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. Permanent impacts have been avoided and minimized to the maximum extent practicable Road crossings have been planned at perpendicular angles to stream flow. Streams are not crossed multiple times by roads All but two road crossings are utilizing spanning structures to avoid and minimize permanent stream impacts. Additionally, roadway networks were designed to avoid the suitable habitat found on site for the Carolina Ladle Crayfish and the Four-Toed Salamander. Wetland impacts are temporary and necessary for the utility installation The utility installation impacts are necessary to supply the proposed development with water and sewer. Due to Chatham County regulations prohibiting the suspension of utility lines from spanning structures the utilities must be placed below the stream bed. 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. Page 6 of 9 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/stn-ngide.html. 1. 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. The project proposes permanent impacts to 248.5 linear feet of perennial stream Payment to the NC-EEP at a ratio of 1.1 is proposed to meet the wetland mitigation requirement. Please see the attached EEP acceptance letter. 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/wM/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): 249 LF Amount of buffer mitigation requested (square feet): 0 Amount of Riparian wetland mitigation requested (acres): 0 Amount of Non-riparian wetland mitigation requested (acres): 0 Amount of Coastal wetland mitigation requested (acres): 0 IX. Environmental Documentation (required by DWQ) Page 7 of 9 L 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 V 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 multipliers. Zone* Impact (square. feet Multiplier Required Mitigation I N/A 3 (2 for Catawba) N/A 2 N/A 1.5 N/A Total N/A N/A ?n«A,UN vui w ieet perpenmcuiar 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 Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or.0244, or.0260. This site is within the Cape Fear River Basin which does not have NC-DWQ regulated riparian buffers XI. Stormwater (required by DWQ) Page 8 of 9 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 anticipated impervious surface will not exceed 17.4%. The calculations are provided on the oversized 24 X 36 sheet 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. The project will tie into an existing treatment facility in the area 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 E?L 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: We have reviewed the "DRAFT Internal Policy Cumulative impacts and the 401 Water Quality Certification and Isolated Wetland Programs" document prepared by the NC Division of Water Quality on April 10, 2004, version 2 1 The draft states that most residential subdivisions are unlikely to cause cumulative impacts This residential project does not meet any of the three criteria of private projects that can clearly result in cumulative impacts We anticipate that you will advise us if a qualitative or quantitative impact analysis is required 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). I'll acv `-'\ Applicant/Agent' Signafure bate ' (Agent's signature is va d only if an authorization letter from the applicant is provided.) Page 9 of 9 5 GIB GIC e Lido{ J G� i C NrC CaCC � CaBP- _ sac r:r N� asGIO • AA h�C . 6aC Gkn '! • GIG 1514 1t ,r "r �', ' ' y.' � i �� ,BIaQ m6 • �; GIC_ GJZ GIG odg If GIC J SITE ��... _� �.. _ � 1�':" ' 1 �y • �. —� Ch11 e 6I �. 6Yp AVA G GNB sac GmB GIBGIC ftc � � � �� �• �� ., �,.. 2225 4. Pie GAO ist .� Nis ' �.. �y`t,. y Ned � •: r PAGo GIB iy t 6a6 2149 GaC •r, rt 4 W118 '?°'- ■ . , 21� Goa 4 tD CkG Nei] GoE p BeE YM Ned W 4 -0- c a - p o Ar a s m „ N i CD W E 6& u CmB ,d w CD 1':F o ff f S Cid bed o Round 'fop'" 8kE a /�AnB �'` MMountainp N a . de Mir t Project No. Scale: 9894.W9 1°=2000 FIG. 1 - SOIL SURVEY MAP SOURCE: Project Mgr. Drawn By: CHATHAM COUNTY 11010 Raven Ridge Rd. NT MM BELMEAD FARMS Raleigh, NC 27614 CHATHAM COUNTY, NC SOIL SURVEY 919-846-5900 Date: 06/08/07 L V 'jar L50- %?^ ' -? 1514 i 1 - ?r•` ?.-" , ll ?x 9 ff I Iti i? i1 r _ ?? l j,, / .. / n -~ \ I it ,I? 1 { ?,???/??_'- v ?"?ri f?-, ? ??? ? ?A ?J+" '` ?.\ J , ? 15 1s) % ? ? •, ? 1', '? , ti , l ?, ( r' ??V, t? -' ? j `' CCC ,""-rr"._ E r /?`ti...-??? ?-,! r' h ? I?l;???? 1, a.` \;' ? \, l ` • .'' ` r, ?''1)1) ' 1 ? l ? % J /r / y -?J ??r?`?? ?' \`, ` CDC ` \ "_ I l ~ ` 1 J/ r ?, \ ; i\ _?? ? 1`? 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't?l •`"T ; i '',/i'r.`%J:- );i?•i I r -- ? l /I / / '? i"^'^' i-" v ? r., Iltlt `?'\? ? Iri:"/ ff ??"l 1 h ??}.,. 4? /?r., /?/.1 l.r,? ? ! +/f Sax f r ? I ? ?; - r: '' l ? vl ??1_1 ? `?? ?• `?`? ? ?? ,' ?j St`-l ?'?r ??`l f ? ? 1 ?', ? ? t:'??, t (? i?t I:I'? ` , Project No. 98 Scale: 12000' FIG 1 - USGS MAP SOURCE: • . 11010 Raven Ridge Rd. . Project Mgr. NT Drawn By: MM BELMEAD FARMS C PITTSBORO/SILER CITY NE Raleigh, NC 27614 USGS QUADRANGLE 919.84&5900 Date: 06/08/07 HATHAM COUNTY, NC 07/11/2007 14:42 91,98469467 S&EC 04 PAGE 02 1?lat}ta Address Soil i Environmental Consultants, PA. 11010 Raven Ridge Road • TWcigh, North Carolina 27614 & Phone: (919) 846-$900 • Pax: (919) 846-W7 wwwSmdBC.com . 1'tlone 1 `~15?? 3i z )y[nject NamdDea(rjpkion' f €A L) L S&EC Project # . (,L1 ladle: 7 j l ?} a? The pg1AMnnpnt of the Army AMY Corps of Engineers, Wilmington District Wilmington, NC 28402 Attn: ' ZL_jMF I' Field Qffioc: ?? Re We4attds Related Consulting and Permitting I o Whom It May Concern: 1, the currant proft owner, horeby designate and autbmize Soil & Environmental Consultants, PA to act in my br half; s my ngrx:t in the Processing of permit applicado to finrniyln upon reg1w supplemental information in support of applications, oto. from this day forward. The L day o£_ 'A'llis notiiicatiotl sUPdr8cde8 airy Wrvious Ponx*pondence concerning the agent for this project. NO'1l'11CE: This aatbarizatloa, for liability and pro"lone tourteay reasons, is aa1i4 one for government Officials to ester the property wlneu accompanied by S&EC staff, You should call S&EC to arrange a site i rueetiaig prior to visiting the site. jm fit, rrr- rl.+! P rint Property Owner's Name &Z? Property Owner's Signature cc: Ms- Cyndi Kmroly Mrs- Nicole Thomson NCDENR - WQ cc: Soil & Environmental Consultants, PA 2321 Crabtl= Boulevard Raleigh, NC 27604 K- Z3d LO)"'Uip coiat, suite C Conconi, 4C 28025 Phone: (704) 720,9405 Fax: (704) 720.9406 Qre6ushcrLQf5Gx 38 t 7_t, LA-A-ndalc Drive Greensboro, NC 27455 Phone:(336)540.5234 Fax: (336)540-8235 AGENT A,UfE;IMZATION FORM All Blanks To Be F UcdIal y_ f}ts Current Landnwnae Soil 4 Env??onmental Consultants 1010 Raven Ridge Read RaleigF. NC 9 211- Phone (9I 9) 84466--55900 _0T-1214 NEW OVERALL IMPACT TOTALS PERMAN ENT IMPACTS TOTAL RIP-RAP S.F. -1,234 STREAM L.F. -150 STREAM TOTAL ROAD FILL S.F. - 0 STREAM L.F. - 0 STREAM TOTAL CULVERT S.F. - 971 STREAM L.F. - 98.5 STREAM COMBINED TOTAL S.F. - 2,205 STREAM L. F. - 248.5 STREAM TEMPOR ARY IMPACTS TOTAL UTILITY S.F. - 5 842 STREAM L.F. - 410 STREAM S.F. - 209 WETLAND A.C - 0.005 WETLAND CONSTRUCTION S.F. - 259 STREAM L.F. - 30 STREAM BUFFERS PER CHATHAM COUNTY ® EXISTING DELINEATED WETLAND EXISTING LINEAR WETLAND WILDLIFE HABITAT CLC (CAROLINA LADLE CRAYFISH) 4-TOED WILDLIFEHABITAT (FOUR-TOED SALAMANDER) P PERENNIAL STREAM INTERMITTENT STREAM LW LINEAR WETLANDS 600' 0 GOO, 1,200' SCALE: I "=600' Morz.) U C V W m ? IV 7 uLu Q rm ( - 0 7 uj Z u m' L om vz, _j0Z m L z 0 O UJ U dm D _j Q m F Q> Z$> -1 U° ¦ ¦ Z a a 2 . 0 W o z a 0 ii ?D ?v a ? * J W m= j ? u ? a 0 a W •1 C NORTH •tl TOP OF CREEK BANK ??OP05Ed WO\OD5 LINE., TOE=411.64 A , 1. TOP=,4 I G.46. A p EXISTING PERENNIAL STREAM 4" 5CI1. 40 PV? CONDUIT y? ?\ FOR UTILITY;CRO,35ING , i \ TOE=412.51 \TOP=418.10 \ L, x TEMPORARY UTILITY Il\?PACT - 710 5.F. 1 PROPOSED CONCRETE CORE SLAB BRIDGE CROSSING - NO 10 CT // ' `.. • '?/ ?' ' l . UTILITY ENCA`7EMENT \ " \ PIPE WITH ANTI-SEEP ' COLLARS TQP=4 17.51 T0?-412.09 TEMPORARY,,UTILITY \ S o ?! ?A" IMPACT - 1, 100 5.F. TOP=417.64 4" 5CH. 40 PVC CONDUIT ?1 \ TOE=412.44 1 FOR UTILITY CROSSING PROPOSED 8" WATER MAIN / \\ PROPOSED WOODS LINE \ 40' 0 40' 80' IIIIIIIIII-iff IM 0=01 SCALE: I "=40' (Horiz.) CROSSING #1 So,1 6 Env ronmental Consultants O O Raven R 0,3e Road Ralegh NC 27614 Phone (919) 846 5900 PERMANENT IMPACTS ROAD FILL S.F. ? 0 STREAM L.F.j O STREAM TEMPORARY IMPACTS UTILITY S.F. 1,810 STREAM L.F. 57 STREAM CONSTRUCTION S. F. 0 STREAM L . F. 0 STREAM V V z _ W - ; z = I W z I I I z uj< 0 Z aj z o? V _j 0 L Z e F y ? U.J U i m _j z > 0 ` ?`??awi[ Q - o /,• V z z ao W Z o Z 3II O .. W m Va = W? O YI a ? _ m NORTH 445 LOW POINT ELEV = 427.33 LOW POINT STA = 13+154.07 CROSSING 445 rVI STA = 12+7 1 PVI STA 6+35 P;VI ELEV = 426.43 € ( BRIDGE CROSSING F A PVI ELEV = 430.03 ? .D. 9.56 E I j A.D. - 7.06 C z K 20.93 PROFILE K = 21.24 ?aa"s So,, -Z"R1 4 1- "= _ U-i z z 40 200.0 VC . s .............__._. .,.....,...?....... ? -. -.._. ......-.w..•.-,. ,- 50.0 VCI 1 1 , 1 Ralc M1 NC 2 I4 9 _ - CC n L N? . , 440 Ph- (91 9) 649 5900 - (? Lu u C z t Z W Q E 0 z < a ! Bridge End - z °o ///???---``` Existing Grade (Typ.) o Bent Backfdl 0 Q 435 ?w... w Lr)w Proposed Grade (Typ. m Bridge End \ Bent Backf ll e v Pro o5ed Concrete Co N Slab Bridge Crossing w - _ re e w. m mm _ n 435 J II?M? z? z 8> 430 j ' ?*^ A --- 430 \ 4 000/0 "? LLAR I . ANTI -SEEP CO 425 425 + I Bank to Bank has utlift}?tlne rVaries) t V Stream e miame class B Concrete . O \ i }oat l 4+--or compacted Clay Q 420 \ I m 420 s inches h Ytl9th ? W + FN a 8 Inc,-has; re f- ! x t Not to exceed 40 feet SEC710?1 Z z Q' i I N 03 /'AA O N •/ 415 e I I ?j {? ? YI i 4 15 Class H Generate or Compacted Clay f. u ? E { L__ J E i M Q Q +?- 7' ' E +/-7 12 - 410 i 10 inches ? H S- nches 6 Inches I Concrete Anti-Seep Concrete Anti-Seep [ PLAN cc Collar (+.) Collar (Typ.) W 405 _____ 405 - DOLLAR DETAIL ANTI SEEP 8" Water Main in I G" Encasement Pipe' SCALE : NONE 50' 100' ' 0 50 SCALE: I"= 50' (Horiz.) SCALE: 1 "=5' (Vertical) 12 +00 13+00 I4+00 15+00 16+00 17 +00 * ENCASEMENT TO BE INSTALLED 10' BEYOND TOP OF BANK NORTH I EXISTING PERENNfAL STREAM TOP OF CREEK BANK '(- '?? ' TEMPORARY UTILITY \\? \ IMPACT - 543 5.F. i TOE 428.75 TOP 431.33 f / j \ TO 420 5 P4 I 5CI,.'40 PVC CONDUIT oo FOR UTILITY CROSSING LIMITS OF TEMPORARY UTILITY 'EXISTING IMPACT- 209 5.F. WETLANDS UTILITY ENCASEMENT PIPE PROPOSED CONCRETE WI H ANTI-SEEP COLLA CORE SLAB BRIDGE CROSSING - NO IMPACT ' Y ?? ?oo 4" SCH. 40 PVC CONDUIT ?h PROPOSED 8" FOR UTILITY CR055ING WATER MAIN TEMPORARY WETLAND IMPACT - 341 5.F. 1 TOP 432.22 ?I TOP 432,79 TOE 429.47 TOE 429.81 PROPOSED, WOODS LINE 40' 0 40' 801 SCALE: I11=40' (Horiz.) CROSSING #2 ,col b Env ronmcntal Cons O t-'s c 1 1010 Baum Rdgc Road Bale gh, NC 276 14 Pnane (919)154G-5900 PERMANENT IMPACTS ROAD FILL S.F. 0 STREAM L.F. O STREAM TEMPORARYIMPACTS UTILITY S.F. 884 STREAM L.F. 57 STREAM S.F. 209 WETLAND AC. 0.005 WETLAND CONSTRUCTION S. F. 0 STREAM L.F. 0 STREAM u `- lzz 7 Z Z G Nm - L W zm Zu?Q m 0 S..? ZWzCF Z _ r V ?z LZ Q aj m z g' Q o u V z ao W ? Z d' GZ .II 0 0 .. W 0J m14 W4 a_ m NORTH CROSSING #2 BRIDGE CROSSING 460 4GO j s PROFILE ; I € i Low Point ELEV = 47.84 Low I"ok 5TA = I4 9G.G3 455 -PVT-STN- - T`2?? 5 _ __ __ _ - ?L 7+75 455 I PVI ELEV = 442.53 P1?i ELEV = 437.48 PVI ELEV = 440.48: A.D. = 4.72 A.D. = 3.53 [ A.P. = I ,10 K = 31.78 I K = 28.37 K[= 91.15 150.0000' UC 1 €100.0000' VCS 10(.0000' VC 450 - ( € 450 I k t R € O CD N r N I N 0) + O + + I? + o-) m y It CO Lf) co I- m 445 N N 10 4? w ( to w w t ( N w j> i > U j> s `J U a-- GL_ a a j P4po5ed Grade ! yr.) j a Propo5eo Concrete Coe 440 End Slab Bri4lge Cro551nq Bent Backflll ) I u p0 /0 --- 435 . ..... 25 Bridge End I Bent Backflll 430'. w. t 7 i I l 7' 17' f 425 l- ? ? Concrete Ant1-Seep Collar (Tyr.) Concrete Anti-Seep Collar (Tyr.) gel WM In16" i Encasement Pipe i 4201 r- r 13+00 Class a Concrete or Compacted Clay Soil t Environmental Gons?itants I IO10 Raven Rdge Road Raleigh NC 27614 Phone (9 1 9) 846-5900 ANTI-SEEP COLLAR DETAIL SCALE :NONE - 420 50' 0 50' 100' SCALE: 1 "=50' (Horiz.) SCALE: I"=5' (Vertical) 18+00 * ENCASEMENT TO BE INSTALLED 10' BEYOND TOP OF BANK 425 u `. In V Z Z z r - G? W um zW0 ' 0 zWZ m Z ?..? Q0ZAO o .? a z ;m O J mm z > 0 Q o> - uo J V Z CC0 w aW 0 x 9 Z 00 z 0 ? y 20 NQ W? M4 0W ? J = W0 V M NORTH 14+00 15+00 IG+00 17+00 445 440 r 1s i Inch*$ f- UtllitrUre j (©lameter Varies) I CY I Class B Concrete I ' or Compacted Clay r- rorc? h # 6 Inches Not to exceed 40 feet SE. oN 435 ANTI SEEP COLLAR 100 YEAR FLOOD LINE x` PER FEMA MAP NUMBERS 3710972100JAND 3710972200J, DATED FEBRUARY 2, 2007. *o EXISTING INTERMITTENT PROP05ED TOP OF CREEK STREAM a WOODS LINE BANK 420.99 PROPOSED 8" TOP 2 TOE 419.72 \ WATER VAIN / 40'' TOE 419.58 / `\ \ TOP 42 k 10 / TEMPORARY UTILITY / / IMPACT - 2j7 ,5'.F'. PROP05ED CONCRETE -' CORE SLAB BRIDGE 4.' 5CH. 40 PVC CgNOUIT CR055ING - NO IMPACT FOR UTILITY CR0851NG TEMPORARY UTILITY -'?` UTILITY ENCASEMENT IMPACT - 203 5.F. PIPE WITH/ANTI-SEEP \ COLLAR -'? TOP 422.09 . TOE`421.04 TOP 421.9 I 4" 5CH' 40 PVC CONDUIT j% P0g/UTILITY CRO551?1cr ,' rf ?' ? o0 Soil G Env ronmental Cor+sui[ants i tOiO Raven Rdge Road Bale gh, NC 2761 4 Phone (91 9) 846-5900 PERMANENT IMPACTS ROAD FILL S.F. 0 STREAM L.F. O STREAM 40' 0 40' 80' SCALE: I '=40' (Honz.) CROSSING #5 TEMPORARY IMPACTS UTILITY S.F. 440 STREAM L.F. 72 STREAM CONSTRUCTION S. F. 0 STREAM L. F. 0 STREAM z u Zl Q., Z NP / Z N VJczM O ZWZ Z ? _j 0Z 0r ?.h Z uj m _j om z z 8; Q-0- /+¦ V Z w Z L0 W Z? im Z , II 2 0 0 .. W m vj = p- w ? Oy a X 0 _ CC m NORTH 450 445 440 435 430 425 420 415 410 LOW POINT E f ST LOW POINT P * V = 430.39 42 CR = +77.66 2 4±Q ?RI? i OSSING #5 NG' PVI STA= E? R© 4+50 PVI ELEV A D. { 429.50 1 8 95 I ?7 PVI ELEV A.° -1 L 3 432.00 7.00 450 `- Z z K= 2.34 z FROFI E K= j °.00 so < e„? o? o"cai eons"mares oiora?RagoRoae n NC 27614 n, Z ?'1 N 3 i 2 2°0, f 'VC 1 40. ' VC =g Phone (91 9) H46-S 900 i -7 I'?I W Z n L Q rm '0 ...W,__.......e.....,m._.........,..'.,.. Ill ..._........e,m..._..........., 0 p ___. - Ln q m N Ln O ° 45 W W Z °' Z Q o Q _ C h? Q J Q J Q J { J 7 L N W E n g > w N > W I > s N j W W] O J rL ?? Existing Crade (Typ.) Proposed Con crete Core 440 Q > z 0 STa n ge ossing 00 J U U ?So i) i Brill e End _ ? _ ? / ------- ANTI SEEP COLLAR 435 ? Bent Backflll s ( W E Pro osedCrade 00% p ?Yp) V / i Inchea ?- uttity?ttne (Dlameter Varies) I 430 I t Glass B Concrete 1 t ? oo "r" -- or Compacted Clay r I 0 io, Bank to g j t ? Banl? Bridge End .?,, ;,_.? •F- '? ?? Stre m Bent Backflll m?m. 425 NottttexGeed40feet EC77£1N Z I I ? p yy \ +l 7' Class s Concrete or Compacted Clay fE V 420 m a ? 12 Inches W V I• Concr'te Anti-Seep C?ncrete Anti-5 ep C ll Il T T F C 6 inches Q ar ( ar ( yp.) o yp.) (? a d f F 415 PLAN ? ? Water Main in MM " W I G Enca ?ment Pipe I ANTI-SEEP COLLAR DETAIL 5CALE NONE t ' ' ' 410 50 0 50 100 SCALE: I "=50' (1loriz.) 5CALE: I"= 5' (Vertical) 41+00 42+00 43+00 44+00 45+00 * ENCASEMENTTO BE INSTALLED 10' BEYOND TOP OF BANK NORTH r? P \ I i ? EXISTING' t t 1 PERENNIAL , STREAM r I 1 i:r ? ( ?I I fr , TOP=407.39x; \ \ ` TOE=401.1 _ TOE=4 40G.G7 T' - _I PRpPO5E0 CONCRETE CORE SLAB BRIDGE CRO55ING - NO IMPACT 4" 5CH. 40 PVC CONDUIT FOR UTILITY CROSSING TEMPORARY UTILITY IMPACT - 748 5.P. 100 YEAR FLOOD LINE PER FEMA MAP NUMBERS 37 1 0972 100-1 AND 3710972200J, DATED FEBRUARY 2, 2007. TOP OF CREEK BANK I I C? 1 i( is f{ I ' I I TEMPORARY UTILITY IMPACT - G5G J.P. I 1 I TOP=406.03 I I I f0E=901.08 4" 5QH. 40 PVC CONDUIT;' I OE=40 POR/UTILITY CR055ING P=40 ' - 66 94' I PROPOSED 8" WATER MAIN UTILITY ENCASEMENT PIPE WITH ANTI-SEEP COLLARS i i 100 YEAR FLOOD LINE PER PEMA MAP NUMBERS 37 10972 100-1 AND 3710972200J, DATED FEBRUARY 2, 2007. Soil F Env?ronmcntal Consultants I I O 10 Raven Ridge Road Raleigh, NC 27614 PM1One (9 9) 846-5900 PERMANENT IMPACTS ROAD FILL S.F. 0 STREAM L.F. O STREAM 501 0 50' 1001 SCALE: 111=50' (Hor¢.) CROSSING #6 TEMPORARY IMPACTS UTILITY S.F. 1404 STREAM L.F. 55 STREAM CONSTRUCTION S. F. 0 STREAM L.F. 0 STREAM t r?rn V V z ZZ I - ? w n ZWQ=? rm O ZWzOF Z ? j Q _j o O Tm (L Z ; Z - ? o z - 0 ?Uu ti Z d Z O Ca Z ?7 N Zn MINE ? o ?W m Q 0Q W Q ON V CC NORTH 430 420 410 40 ?+ LOW POINT ELEV = 418.61 CROSSING #V LOW POINT 57A = 17+ 17.86 PVI STA $ 13+50 BRIDGE CROSSING PVI ST = 18+00 I PVI ELEV = 421.00 E PVI ELEV = 418.00 A D 2.00 A.D.E- 7.47 PROFILE- 1 0 m 100.b VC ( 20Y.01 VC + N m Proposed o0 d W Grade€(Typ•) + n v W > °o Q > ._._.,......_ W.? Bridge End _Pro?ose oncre Cor ;Bent Backfill 51ab Brld e Cr055mg 2 c Bridge lind W Bent Ba?kf' 1 -0. Gzz Bank to Bank 5tream I It ng Gr d e (Ty :)A. Existi ad p f ( ? I ? E 1 I 4 o 7' Concrete Anti-Seep Concrete-Anti-Seep Collar (T Collar (Typ.) 8" Water Main in I G" EnG35CMC t Pipe" { 00 14+00 p o l o ???? R aye Roaa 430 Raleigh, NC 27614 Phone (91 9) 8,4G-5900 420 410 400 ANTI SEER COLLAR 0 r fla chos 4,- UtititrUre j I o)lameterVaries) i ? toot I I I Class 5 Concrete ?`orCompacted Clay ? { ?F f E_ 6 inches ref 8 Inches d 40 feet Not itr "cee Vy c JGL 114kE u Class B Concrete or Ccmpaemd Clay c iq t_12 Inches , In: hes ,.6 Enches PLAN ANTI-SEEP COLLAR DETAIL 5CALE:NONE 50' 0 50' 100' SCALE: 1 "=50' (Honz.) 5CALE: 1 "=5' (Vertical) 15+00 16+00 17+00 18+00 * ENCASEMENT TO BE INSTALLED 10' BEYOND TOP OF BANK 0 V ?., Z Z LU -?Wzm ZWQ O Z W Z OF S?-I Z z C >" L Z 3 m Q W m m tm Z> g o z? QUp- W . 0 J ? ?W F W ei z ZZ g 0 ?? NQ J 0 M ma J Q ?yL a 0 ? M W 0 NORTH p0 / \ i TOP OF CREEK BANK i EXISTING PERENNIAL STREAM PROP05ED 8" WATER MAIN CL=418 37 TOP=420.45 TEMP.; CONSTRUCTION / IMPACT - G3 S.F. p0 PROPOSED CONCRETE \ HEADWALL - NCDOT y \ ' STANDARD 838.1 1 PERMANENT RIPRAP \ IMPACT - 3G0 S.F. o 4" 5CH. 40 PVC CONDUIT FOR UTILITY GROSSING EXISTING / WETLANDS (TYP.)? ' i TOV=419.81 / CL=417.65 , TOP=420.01 / 24'(w') x 40'(1) x 24" (c0, / / CLASS "I" RIPRAP / D1551PATOR PAD 100 YEAR PL00D PLAIN PER PEMA MAP'NUMBERS 3710972 I,OOJ AND' ' 3710972200-1, DATED FEBRUARY 2, 2007. 40' 0 40' 80, F-1 F-1 F71 F-1 MINI SCALE: I "=40' (Horiz.) ICI, III I'I I 1 TEMPORARY UTILITY IMPACT - 384 S.P. 4". SCH. 40 PVC CONDUIT Fop, UTILITY CR055ING UTILITY ENCASEMENT PJPE WITH ANTI-SEEP -COLLARS TOP=420.60 / i PP/OPOSED CONCRETE iHEADWAL - NCDOT STANDA D,638.1 I -o 0 , CROSSING #7 435 430 425 420 415 6 ?r d 50 ? . E?? ?o?me??a? co?s?lca?es I 10 I O Raves Ridge Road Rale gh, NC 2761 4 Phonc (91 9) 54G-5900 ---------- --- - - - ----------- NV, OUT 4 Ln ° ? o 0 ^ 1 8 ? FIEF?DWALLS E t G DE . IsnN6 ? ? BADE ? 40 L .F (IA'S'I ( f?IPf?AP PAU @ 0, G0,70 ? INV. IN ,? 418.70 - PR01`05ED WATE LINE N 0+00 ROADWAY CROSS SECTION APPROX. STA. 15+10 ROAD "I" HORIZONTAL SCALE I "=50' VERTICAL SCALE I" =5' PERMANENT IMPACTS ROAD FILL S.F. 0 STREAM L,F. O STREAM CULVERT S.F. 516 STREAM L,F. 48.5 STREAM RIP RAP S.F. 360 STREAM L,F. 40 STREAM TEMPORARY IMPACTS UTILITY S.F. 384 STREAM L.F. 36 STREAM CONSTRUCTION S.F. 63 STREAM L.F. 7 L 0 STREAM ? w = ZIUQ 0 zuj ZCC3 F V _j 0 z",a rq °' z?r m O W U IL 0 j V Z Z ?. W I- a ? 0 II H* fig ? 0 ¦ W W ? ? I- Q a y V 0 NORTH 450 14+50 CROSSING #7 DUAL 48" RCP CULVERTS PROFILE ?_L?I?IT 51 A =.?.?T± .. _ m m 0 0 N m 15+00 .? 8 450 440 - f ?_? _?_ *-, 430 ?.. 420 .?t??ing Gra?yp ) 410 m N N m 15+50 501 S Environmental c-'hoots 1 1010 Raven Ridge Road Raleigh, NC 27614 Phone (919) 1346-5900 ANTI -SEEP COLLAR i •II nsIWF ? VlitiM?Ir?? (Diameter Varies) i class 8 Concrete 1 lout I ,__ or compacted Cloy ranch Vtl ! 6 inches 6 inches ? Not taexceed 0feet -n6,'+ 1_417 - class B Concrete or compacted Clay t-, 2 Inches 6lnchas a, a5Inches PLAN ANTI-SEEP COLLAR DETAIL SCALE : NONE 10' 0 10' 20' SLALAMAR-A SCALE: I "= 10' (Horiz.) SCALE: I"= 10' (Vertical) * ENCASEMENT TO BE INSTALLED 10' BEYOND TOP Of BANK U C Fz' R., ??w Zlu< O Z W Z um Z S-I Q JVZ'q O , LZ Z Don Q?Zg> _j U° ¦ ¦ z 0 w 0. I- W ? I - 9 n 2 0 _ in 0 J 04 W m 2 Q J MW = ? a Q (30 I p ? M W NORTtl I \ \ 1 \ 1 \ I \ -, PROPOSED 8" \ 1 1 L _ WATER MAIN ,?\ \ I UTILITY ENCASEMENT ? -_- - \ iT TEMP. CONSTRUCTION \ 22 -QO _ PIPEWITI ANTI SEEP IMPACT - 70 S.P. I . COLLARS TOP=428.33 TOP Of CREEK BANK 1 I CL=420.70 TOP=426.28 EXISTING 1 -- INTERMITTENT I I: 1 I STREAM TEMPORARY UTILITY. -TEMF-QRARY UTILITY, / IMPACT - 23a SUF. IMPACT - 284 S.F. SCH. 40 PVCNDUIT' 00 FOR UTILITY CP0551V-,- i 4" 5CH. 40 PVC CONDUIT FOR UTILITY CROSSING TOP=42G.56 CL=42'5.5G TEMP. CONSTRUCTION ? 'IMPACT - 77 S.F. PR01`05ED OPEN BOTTOM CULVERT WITH SEGMENTAL BLOCK HEADWALLS 40' 0 40' 801 CROSSING #6 SCALE: I "=40' (Horiz.) Soil E Env ronmcntal Consultants I I OI O Raven Rdge Road Ralc gh, NC 27614 Phonc (91 9) 546-5900 PERMANENTIMPACTS ROAD FILL S.F. 0 STREAM L.F. O STREAM TEMPORARY IMPACTS UTILITY S.F. 522 STREAM L.F. 68 STREAM CONSTRUCTION S.F. 147 STREAM L.F. 16 STREAM W ue I ZWQr O Z Z UP Z ° q r? 0 a? L Z O U j OZ _ Z boo Q?Zg> J0 '1¦ V Z Z ?. W }w I- 0 IL p ? p II 2 0 o.. w W m ? m V? = I- a a (? _ p m CROSSING #8 BOTTOMLESS CULVERT PROFILE LOW POINT ELEV = 439.26 LOW POINT 5TA = 22+45.27 450 440 450 440 utllit-Nue {Diameter Varies) Mass 9 Concrete or Compacted Clay Z ?., Z ?NP ` i W Z ai (Or ZWZOF Z o ?M < ; ? LZ?m W u dm _j Fm z Nov ? j U° _ u inches •t-6 inches TtottoEexceed 40 If MO set I, 430 SEC?`10N V _ -. ?.. _........ _.w ?_......_m_ __?.. _ . Existing Grade (typ-) ¦ O Q ?. a CC e class 6 Cancret IML ?., or Carraac,ed Clay _??_? _ P?o?t?ng W Q. W 420 'on- i __ P r >a11y ? ? ahcnk °420 s Z 0 Refer 12 Inches Cone..Ant1-ye r p _ .:" Gol cue ?= O ?1 y 161nches .Q 1C„ml p? _ 0)? ? ?? 6Inches 410 ?a r Mairi in Ali a' irn -----i .. n, 410 PLAN M W ANTI-SEEP COLLAR DETAIL X 14 N cV O?j N N SCALE : NONE 0 ?? ?6 C10 Qy 22+50 23+00 23+50 m 10' 0 10' 20' SCALE: I "= 10' (Horiz.) SCALE: I"= 10' (Vertical) * ENCASEMENT TO BE INSTALLED 10' BEYOND TOP OF BANK 4 NORTH Soil d Envvonmcntal Consultants 1 OI O Raven Ridge Road Ralagh, NG 27614 Phone (91 9) 846-5900 ANTI -SEEP COLLAR I I 100 YEAR FL00 D PLAIN I e PER PEMA MAP NUMBERS 3710972100JAND 3710972200q, DATED FEBRUARY 2, 007. F, X-DELINEATED l WETLAND (TYP.) PROPOSED CONCRETE HEADWALL 14 ?+, 4" 5CH. 40 PVC CONDUIT FOR UTILITY CR0551NG I I T TOP=418.1 G TOE=415.81 -- PERM 37?OO 900 „I i I ANENT 11\11 P1.1\1 IMPACT - 874 5.F. \\ ` 139 00 TOP=418 2,4 y0E=415.56 33' (w) z 110' (1) x 24 (d) CLA,55 "2" RIPRAP D1551PATOR PAD, 150 ? < En?,?o?menra? ?ons?,ranr= 101 0 Raven Ridge Road Raleigh, - 27614 Phone (91 9") 846-5900 40' 0 40' 80' 6w -E=NMI 5CALE: I "=40' (Honz.) I I i ? I I I I I , I 40 00 I I J PROP05ED 8" WATER MAIN UTILITY ENCASEMENT PIPE WITH ANTI-SEEP COLLAK5 4" 5CH. 40 PVC CONDUIT FOR UTILITY CR055ING \ TEMPORARY UTILITY \ IMPACT - 185 5.F. TOP=419.75 TOE=418.26 TOE=418.08 TOP=420.22 TEMP. CONSTRUCTION IMPACT.- 49 5.P. PROP.p5ED - CONCRETE HEADWALL PROPOSED I G' x G' CONCRETE BOX CULVERT CROSSING #9 435 r 1 2 E b b FP G 05ED 3 ' E ._. co 4c. e "?.. W LL5 1 E 15TING G ?ADE ' 0 L.F. -LA 5 "2" 1 6' x 6" I A gOX 418. 0' WAT ';LINE O 0 0 430 TOP OF CREEK BANK 0+00 ROADWAY CRO55 SECTION APPROX. STA. 38+G I ROAD "I" HORIZONTAL SCALE I "=50' VERTICAL SCALE I` =5' PE RMANENT IMPACTS ROAD FILL S.F. 0 STREAM L.F. 0 STREAM CULVERT S.F. 455 STREAM L.F. 50 STREAM RIP RAP S.F. 874 STREAM L.F. 110 STREAM TEMPORARY IMPACTS UTILITY S.F. 398 STREAM L.F. 65 STREAM CONSTRUCTION S. F. 49 STREAM L.F. 7 STREAM 6 z_ ZW ZIuQr? O ZLjZoF Z S-, j Z _ fLZO m W? P 0 u J ? Z>Z8V ??0- V Z Z ?. d0 0 Z ZII W 0 .WI M // ,? V I- a a y V 0 m VD NORTH 450 440 430 o N ? ?. N 38+00 CROSSING #9 BOX CULVERT PROFILE 50 40 30 0 O N m 39+00 So?1 E Environmental Cons?icants I I O I O Raven Ridge Road Raleigh, NC 27614 Phone (91 9) B46-5900 ANTI -SEEP COLLAR r 1s ^ 1 'has d- Utlliti*uve q i (Diameter Varies) I 1 Iaot i I Class 6 Concrete "- or compacted Clay 1 hea renchVJdEh 6 6 inches i 0 Not #0 exceed d© feet SECTION class 6 Concrete 1 or compacted Clay ;r Inches 6Inch es .-Sinches PLAN ANTI-SEEP COLLAR DETAIL SCALE : NONE 10' 0 10' 20' SCALE: I "= 10' (Horiz.) SCALE: I "= 10' (Vertical) * ENCASEMENT TO BE INSTALLED 10' BEYOND TOP OF BANK z z P _ ? W ZC ZWQ tO VM Z W z UP L Z Q q _J 0 ( O it ILLI. z Y C W m ?J?sar z ?, o a > z s> _j 0 /. V j ¦ w W 0.H A ? W4 W M g .4 = OW ?? a a c? y X V O m NORTH W AT ?qPG o ? Cl) Coleen Sullins, Director Division of Water Quality June 18, 2007 Soil & Environmental Consultants Attn: David Gainey 11010 Raven Ridge Road Raleigh, NC 27614 j U L- in ? 6 JUN 2 0 410 I I By: €€nimnme,ital. hensu!taais, PA IPRRO 07-017 County: Chatham INTERMITTENT/PERENNIAL (I/P) STREAM DETERMINATION Project Name: Belmeade Site Location/Directions: Site is located in the southwest quadrant of SR 2161 and NC 64 west of Pittsboro Subiect Stream(s): UT to Harlands Creek Date of I/P Determination(s): 6/13/07 Feature I/P Call* Location of I/P Point (GPS Points and/or Flag) Notes/Basis for Call (Stream Form Rating, Biol. Indicators, etc.). A P Throughout B P Intermittent start at Flag DG04 Perennial start at Fla DG05 C P Throughout D P Throughout E P Throughout F P Throughout G I Intermittent start at FlagG1 20 H I Intermittent start at Flag Hl I I Intermittent start at Flag D03 J I Intermittent start Flag Jl Intermittent end at Fla J2 21.5 K I Intermittent start at Flag Kl (pipe) 24 L I Intermittent start at Flag DO1 21.5 M P Perennial start at Flag D02 * UP - Intermittent/Perennial This on-site determination shall expire five (5) years from the date of this letter. Landowners or affectedparties that dispute a determination made by the D WQ or Delegated Local may request a determination by the Director. one aro ling A request for a determination by the Director shall be referred to the Director in writing c% Cyndi Karoly, D WQNort ?Natmu ura!!y North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone (919) 791-4200 Customer Service Internet: h2o.enr.state.nc.us 1628 Mail Service Center Raleigh, NC 27699-1628 FAX (919) 571-4718 1-877-623-6748 Michael F. Easley, Governor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper Belmeade Site 6/18/07 Page 2 of 2 Wetlands/401 Unit, 2321 Crabtree Blvd., Raleigh, NC 27604-2260. You must act within 60 days of the date that you receive this letter. Applicants are hereby notified that the 60-day statutory appeal time does not start until the affected party (including downstream and adjacent landowners) is notified of this decision. DWQ recommends that the applicant conduct this notification in order to be certain that thirdparty appeals are made in a timely manner. To ask for a hearing, send a written petition, which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This determination is final and binding unless you ask for a hearing within 60 days. The (owner/future owners) should notify the Division of Water Quality (including any other Local, State, and Federal Agencies) of this decision concerning any future correspondences regarding the subject property (stated above). This project may require a Section 4041401 Permit for the proposed activity. Any inquiries should be directed to the Division of Water Quality (Central Office) at (919)-733-1786, and the US Army Corp of Engineers (Raleigh Regulatory Field Office) at (919)-876-8441. Respectfully, Lauren C. Witherspoon Environmental Senior Specialist CC: DWQ-RRO Files Central Files DWQ 401Unit NorthCarolina Naturally North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone (919) 791-4200 Customer Service Internet: h2o.enr.state.nc.us 1628 Mail Service Center Raleigh, NC 27699-1628 FAX (919) 571-4718 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper Soil & Environmental Consultants, I , Job Number 11010 Raven Ridge Rd.- Raleigh. NC 27614 IM 4, (919) 846-5900 • (919) 846-9467 Date JU -I e 13..200 Web Page:www.SandECcom Regulatory Agent/Agency S&EC Personnel U Streams Agent Initials: Feature (Start /Class/Mit.Ratio` J -off-- -T Feature (Start/Class/Mit.Ratio) CX•?hn?°?-? ? '? Ile ? Feature (Start /Class/Mit.Ratio) x? Feature (Start /Class/Mit.Ratio) L _ 11 i,4ffer e Feature (Start /Class/Mit.Ratio) IYV Feature (Start /Class/Mit.Ratio) Feature 49 (Start /Class/Mit.Ratio) 0" "`? 1 aurT ?n'?'?t ? Feature (Start /Class/Mit.Ratio) R f l 7? ?'rY t ?I ??r1 *For Streams, please note the classification (intermitte perennial, important/unimportant) and the mitigation requirement. Wetlands Agent Initials: Flag Numbers/comments Flag Numbers/comments Flag Numbers/comments Flag Flag Numbers/comments **For Wetlands, please note the wetland type (riparian or non-riparian as well as mitigation requirements). Marginal / Questionable Areas Agent Initials: Area Label/notes Area Label/notes Area Label/notes Ponds Agent Initials: 1. 2. 3. 4. 5. By my initials above, I, (re ug latorY went), attest that the resources noted above have been reviewed during an on-site meeting on (date). ' ? ? ? ,, . . • ? ? ' ?' ? I I i V ' ? r- „ ' '? ! rr ?O }._,i-?/ r J ? ; 1 ' ?I `\ 1 ? + ' 4 s , / ? ! J J / ' , f ? / %' ? _--•f ` ^ ` ti,t?.?-?-. , 1?: ,?,1? /.o ?\Jfr ?.?,ItL?? _\, ?1 r } • %„ ? •? ;, i _/ ''1..,, ??: __-? l -? ',- - _ t`??? ? 1r '.? 1`??, I' '? ?,1,' ? ? ?•'Gt ?. : t /, / ? , ~ "` ? '1' \? `8? rYf Y 1i1 1 / 1\ ? ? ' ''l? ` { - , ? / `?? // aL50 J"?? / ? ?, :'-±l"_' '? \ ? ? •i `f1? .. ? w• ' _.f 1rn?`, ? v ( / \\ 'i ? , u y ??? / ?f° ,Il I?{ }1111 .) ???-?,n ?/ ``? /t` J \ ? ? ? 1 `J `) =m. ?- %; ?`rC ( ,, ?,? =c'"'3ar` /%?`;? ti_ ??,,, ---_- , - ? C ,\?,,- ,!j/')/JI , IIII I 'F'-: ?7f, , 1 t? 8 1 rr, -!q ?,? r J /? '', !t ? ??}?'"' L ?\ ' ? i?1\' /i \f/\,,1 f'1511p \ \ `? i` `? r: r ti .1?. I J . l ! \1,1,? ? i I t.l %1V• ? (t •( `\\?_ ?`\ ?` ` -. r1 %j • ''> :i % I , u \ .`',E I 1 ?l rS11 1 1 ?'a..?. % ,; `1 < t r1 ;t!, ?, l. 7 41 j.) \ ?, -? ? `;•, ?.. _, `fir'-,r?1?-_(?fl ' ,_d! ? ,(.1 y,?, ? I J t\'`?,. ?--" \? ?,? , u' 'E , ?, -_ , ' I i I ?? r-`-? .? ?r _ _ E Jf _ c'? r -? ---- ( ^? ? ' f ' ? ) r -• 1I ,> V -?, I ' 211 t j--??, rl ; , ? ? '?i / ,'- 1 ? ' 11 X473 I ( r? ?\- (-. ? ' ? ?i. ' ? ?\•, / ? ? \ ? ? ? ? ? fir!! -`\ , ??\?? ( _/ `•?..i/ J ?-?` '\l (? / 7 ),,fin/ ? .1/,) ? ?. `: -`./`?:-'%?-`- ? . -. , ' /? `, r?_ / 11+i t I ?`\ ?`1, /?; ?1 1}1 . i'i` ?r ~C ?`, / tl '? I ? ", ?u?;•' ?' -?-.`?? l' ?? /?• J ?, 1 ? ; /! 4 0 , ? , r) , V I J '?._, •-__' ,,` f) ?'4 u 1 ,rr' ? , f ?' _ \. - ? 1 ?! 1 ? ? ? ? ? ? \ ?? ? a ??-?_-?, i? .1 4ao _ ?; 1 / ' ? - ail -_- _?"'??; • . ;1 i ( ,. . \J f' ? J, \ • fi i : ,' /. 1?\ ? , 1"°r, \. - "? / `,' 4L. { .4 }, A z..+. ) ?? , g , / . i, Project No. Figure I - 1:24K USGS 9894.W3 Topographic Quadrangle 4Ar'Ilk; ,- Project Mgr.: rllghway 64 51tP-Titt5boro) j Soil & Environmental Consultants, PA Dav}d Gainey . Chatham Development Corp 11010 Raven Ridge Rd.- Raleigh, NC 27614 (919) 846-5900 • (919) 846-9467 Scale: Chatham Count NC Y> Web Page: www.SandEC.com I 2,000' Plttsboro Quad (I 993) 01/03/07 Slier City NE Quad (1980) A r r ? ? ? 3v n5 :?- d - S j ma`y` r `,. x Project No. FicJure 2 - NKCS Soil 9894.W3 Survey Map Project Mgr.: Highway G4 Slte(PlttSboro) David Gainey Chatham Development Corp. Scale: Chatham County, NC I" = 2,000' Chatham County 01/03/07 Soil Survey -? 4 - - T? ? .,,?.a 2aSC s? s xA L Joins F-5 JUL 1 2 2007 CH A Soil & Environmental Consultants, PA 11010 Raven Ridge Rd.• Raleigh, NC 27614 (919) 846-5900 - (919) 846-9467 Web Page: wwrw.SandEC.com s??stem , PROGRAM July 12, 2007 Belmeade Farms, LLC 6205 Fayetteville Road, Ste. 104 Durham, NC 27713 Project: Belmeade County: Chatham 0 7- 1 2 1 4 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 Gte applicant to contact these agencies to determine if payment to the NCEEP will be approved. This acceptance is valid for six 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. Ca e Fear Stream (f? t) W l p 03030003 e et ands (a=S) Buffe! 1 (Sq. Ft.) B offer 11 (Sq. Ft.) Cold Cool Warm Riparian Non-Riparian Coastal Marsh Impacts 0 0 249 0 0 0 0 0 Credits 0 0 498 0 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 Kelly Williams at (919) 716-1921. Sincerely, illiam . Gilmore, PE Director cc: Cyndi Karoly, NCDWQ Wetlands/401 Unit Monte Matthews, USACE-Raleigh Nicole Thomson, agent File ka toriprg... ... PYDt?ctl,`t9 our State A AffiRR_ North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.nceep_net .ASS; July 11, 2007 Steve O'Ncal CIIATIIAM DEVELOPMENT CORPORATION 6208 Fayetteville Road, Suite 104 Durham, NC 27713 Re: Report of Subsurface Investigation Proposed Creek Crossing ##8 Belmeade Pittsboro, North Carolina OeoTechnologies Project No. 1-07-0141-EA Gentlemen: GeoTechnologies, Inc. has completed the authorized subsurface investigation to evaluate subsurfacc conditions for construction of the proposed bottomless culvert to be constructed at creek crossing ##8 in the Belmeade development. Subsurface conditions at the site were investigated by utilizing an all-terrain vehicle mounted drill rig performing standard penetration tests at selected locations to evaluate the consistency and density of the subsurface soils. A total of two borings were completed at the creek crossing location. The borings were extended to depths varying from 3 to 7 feet below existing grade, The borings were located in the field using NC grid coordinates and a Trimble CPS unit, and therefore the locations should be considered approximate. The locations are indicated on the attached Figure 1. The borings were completed utilizing large diameter hollow stern augering techniques. This report presents the findings of our investigation along with our recommendations regarding construction and foundation support for the proposed culvert crossing. SITE AND PROJECT INFORMATION It is our understanding that the project will involve construction of a bottomless culvert for creek crossing t#8 in the Belmeade subdivision in Chatham County, North Carolina. The arch culvert will span 20 to 40 feet across an existing creek to provide access for the road right-of-way. We anticipate that the structure will also include wing walls extending off of all four corners of the proposed culvert. SUBSURFACE CONDITIONS A generalized subsurface profile prepared from the test boring data is attached to this report as Figure 2 to graphically illustrate subsurface conditions encountered at this site. 's'tore detailed descriptions of the conditions encountered at the individual test boring locations are then presented on the attached test boring records. Chatham Development Corporation Reif Bade t'reek Crossing `?'8 July 11. 2007, pare- , Subsurface conditions on the site were characterized by approximately 3 to 5 inches of near surface topsoil underlain by residual soils which have fo rrned in place by weathering of the parent bedrock. The residual soils consisted of stiff to very stiffsandy and clayey silts. The residual soils extended to depths of l to 6 feet below existing grade where partially weathered rock (PWR) was encountered. F'WR is defined as material which could be penetrated with the soil drilling augers but which exhibited penetration resistances in excess of 100 bpf`. The MR was encountered to depths ofd 3 to 7 feet below grade where auger refusal was encountered on harder more competent bedrock materials. Groundwater was not encountered at in the borings at the time of baring. Additionally, regional groundwater levels will fluctuate with seasonal and climatic changes and may be different at other times. RE COMMENDATIONS The following; recommendations art made based upon a review of the attached test baring data, our understanding of the proposed construction, and past experience with similar projects and subsurface conditions. Should existing plans change significantly from those now under consideration, we would appreciate being provided with that information so that these recommendations may be confirmed, extended, or modified as necessary. Additionally, should subsurface conditions adverse to those indicated by this report be encountered during construction.: those differences . hould be reported to us for review and comment. Cruck Cro,sinrz Locations, It is our understanding tha+, consideration is being given to utilising a bc1tt rrnl 5 culvert for the creek crossing 48 location. The borings encountered shallow- PWR at the creek cre-sing location. The materials wwhich w?c:rc encountered will exhibit a maximum allowable bearing c.rp tcitva of 10.000 psf for founndations cmbedded on the PWR.. Typically, the bottomless culverts are supported on a strip footinL, bearing on PWR. We recommend that the footings be extended to bear on 1'WR tier scour protection. The strip footing will resist sliding by friction developed along the base of the foundation and by passive soil resistance. We recommend calculating friction resistance utilizing a sliding friction factor of 0.4 on the base of` the foundation and recommend utilizing a uniform passive pressure of 800 psf for calculating; passive resistance. Once foundations have been excavated, we recommend that an envinccr visit the site to perform an inspection at the base of the excavations to verify that exposed c:ocxtiJons are similar to those encountered in the borings and are suitable for support of the proposed structural loads. If any, soft areas are identified in the foundation excavations. they can he repaired by neatline undercut and backfilling with a non rodablc rna(erial such as lean concrete. We recommend that the contractor he prepared to concrete the footings relali??ly quickly after excavation or to place a shallow mud mat. due to the possibility of 4youndwat<r infiltration. The contractor should maintain pumps and sumps during the excavation process to remove any groundwater which enters the excavation. Ail ()`iIJ regulations should be ; trietly adhered to when placing workrrte:ri within a below grade excavation. Am ert r, ati,)n which extends below 4 feet will require sloping at temporary angles of 1.51-1:1 V or the ta.w it t4taeporarv shor€no Chathani Dek'etoprnent Corporation Beimeadl, Creek Crossin?,, =S LIJ%?' 11, 2Q07 If cast-in-place walls will be constructed as hcadwalls for the culverts, we recommend that the concrete retaining wall be do sil ncd for a triangular lateral earth pressure distribution based on the assumption that the soils behind the walls will act a an equivalent fluid weighing 50 pcf. This assumes level backfill above the wall and that highly plastic clays will be excluded as backfill material, All backfill placed w=ithin 3 feet of the wall should be compacted with hand held tamps rather than with heavy mechanized equipment to maintain pressures within the design assumptions. In order to prevent a build-up of hydrostatic pressure behind the wall, a sand filter or specialty drainage material such as Enka drain or Mira drain should be utilized to collect water which migrates toward the wall and to direct that water into a footing drain which is then drained to the lower elevations of the site. The outlet point on the site should be equipped with a backflow check valve to prevent backflooding through the outlet pipe during high water events in the creek. Once foundations have been installed; we recommend the structure be. backfilled with a granular material compacted to 95% of the standard Proctor maximum dry density. Field density tests should he performed during compaction operations to verify that compaction specifications are being met. Additionally, no heavy equipment should be placed within 3 feet of the sides of the arch structure. ,Also, heavy equipment should not be utilized over the top of the structure to prevent overloading of the arch crowns until the top has been covered with at least 3 feet or more of soil. GeoTechnolol ies, Inc. appreciates the opportunity to be of service on this phase of the project. Please contact cts if you have any questions coneerning this letter or if we may be of additional service on this or other projects. Very -rruiv Yours, GeoT'echnologies, Inc. f r ' . ? ? Israel. P.E. kY t NC: Registration No. 14 ' q ? ` ?yF1 DLlipr-ebh/'lam Attachments cc: ( Group 070 14 1 ea-4.doc ??r 1 gv143: (128j ' 1271 ? ?t L. 6 , 125; 111448), _ '14 . t?4y J,t , .ti w 1701 -; 157 (153 ``_4Q 155 a* •r I _ r (!71i 172 %? ?, 2ft t 74 16$ 1 0175 167 d i 17 166 t 159 (160 t(61' ? ` 1fit Y{ ? 183 10 (124 r } ? i`E J ?t 197, PROJECT: SCALE: Not to Scale II'1 _ JOB NCI: 1-47-0141-EA Belrneade Crossings #8 Te"x"11 o lies, `n FIG NCI: 1 Pittsboro NC GENERALIZED SUBSURFACE PROFILE 3 f!' 8 I PROJECT: Belmeade Creak Crossing #8 Pittsboro„ North Carolina C-2 i j? Soto" j it LEGEND 0 Topsoil 1 Loan Plasticity Silt Partially Weathered Rock 7-1 8 Standard Penetration Resistance Auger Refusal GeoTe(finologies, log SCALE: JOB NO:1-07-0141-EA FIG N4:2 FESTBORING RECORD DEPTH (FT.) 0.4 6.0 ;.s DESCRIPTION ELEVATION PENETRATION (FT.) (BLOWS/FT.) 0 10 20 40 60 BORING Nt.,- IBER C;- 1 I)_1T " l0-C> PACE I OF I 100 BLOWS PER SIX INCHES Ge*Te(hndogies Inc GrouridNvY t.tc:r Tiol i;vc mmlcre I t 6me of bo rim-,. TEST BORING RECORD DFPTH (FT.) DESCRIPTION FLEIVATION PENETRATION (1-1%) (BLOWS/FT.) JOB NUMBER ;-;:)?-tit #1-LA BORING NUMBER C-, DATE - - t PAGE OF I BLONN'S PER SIX INCHES i GeoTechnologies, GrMndwater not encountered at time of boring,