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HomeMy WebLinkAbout20081163 Ver 1_More Info Received_20081103wt*j;t 08 - ?1 63 ??? • ;? «r w an Wetland and Natural Resource Consultants, Inc. NCDWQ Wetlands/401 Unit Attn: Mr. Ian McMillan 1650 Mail Service Center Raleigh, North Carolina 27699 Re: Revised PCN - Mayo Forest SAW-2008-02309 DWQ# 08-1163 Rockingham County Dear Mr. McMillan: October 27, 2008 (dQ V 3 2008 I)ENR - 4VA 1 ER QUALI rY WETLANDS AND STORMWATER BRANCH The site plan for the Mayo Forest site has been modified to avoid and minimize impacts to regulated features. The new site plan has eliminated the need for the two driveway crossings for what was Lots 17 and 18 (the subdivision road was realigned to allow for suitable building sites on the east side of the channel). The new site plan will utilize an off-line riprap apron at Impact S1 to decrease impacts for the road crossing by 40 If. The new site plan will remove the old dam on site to allow Impact S2 to occur on the portion of the CH100 channel that was determined by the Corps to be intermittent/unimportant (overflow gully). The dam removal will result in approximately 400 If of new/restored channel within the pond bottom and below the road. Open water impacts on the pond will be 0.0113 acres. The new proposed total permanent impacts to perennial channels are 103 If for a road crossing. The new proposed total permanent impacts to intermittent/unimportant channels are 107 If for road/lot fill. The new total proposed temporary impacts to perennial channels are 10 If for septic lines (open trench and backfill) and 10 If for a cofferdam. Endwalls have been utilized to minimize impacts to channels. Mitigation is to come in the form of avoidance/minimization (endwalls on crossings) and preservation (approx 4100 If of channel and 0.385 acres of wetland). Attached for your review are: • PCN Form • Site Plan / Impact Map Sparta Office PO Box 1492 Sparta, NC 28675 Engineers Drawings Please contact me with any questions you may have. Best regards, David Nishida MS-.. CC: Andy Williams USACE Sue Homewood NCDWQ Office Use Only' Form Version March 05 USACE Action ID No. DWQ No. D9 - 11 U3 (If any particular item is not applicable to this project, please enter `Not Applicable or NiA .) 1. 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: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: ? 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 1. Owner/Applicant Information Name: See attached agent authorization form NOV 3 2008 Mailing Address: Telephone Number: Fax Number: DEI - r1nTE R tduA T11 RAfitG?E E-mail Address: ,. ETtANp?ANusTORWA 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: David Nishida Company Affiliation: Wetland and Natural Resource Consultants Mailing Address: 3674 Pine Swamp Road P.O. Box 1492 Sparta, NC 28675 Telephone Number: 919-606-4270 Fax Number: E-mail Address: david@wetland-consultants.com 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 Page I of 9 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: Mayo Forest 2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A 3. Property Identification Number (Tax PIN): 792900429435 4. Location County: Rockingham Nearest Town: Stoneville Subdivision name (include phase/lot number): Directions to site (include road numbers/names, landmarks, etc.):From US Hwy 220 in Stoneville, NC. Take exit for Rte 770. Turn left on Rte 770. Travel for 3/4 mile. Site is on right. 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): 36.4732 N 79.9353 W 6. Property size (acres): +/- 60 acres 7. Name of nearest receiving body of water: UT to Mayo River 8. River Basin: Roanoke (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/.) Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: Site is forested. An old farm pond that needs repair is located on property. The general land use in the vicinity is forestry, agriculture. Describe the overall project in detail, including the type of equipment to be used: The project is a single family residential development. Stream impacts include two road crossings for subdivision roads. Impact I impacts a perennial channel. The site layout has been modified such that Impact 2 now impacts only the portion of the channel determined by the Corps to be intermittant unimportant. The dam on property will be removed. Impacts 3 and 4 Page 2 of 9 (driveway crossings on the original plan) have been eliminated by shifting the road so that suitable building sites are located on the east side of the channel. Typical grading equipment will be used in the construction of the roads and installation of culverts. Because of changes to the site plan, five temporary impacts are necessary (Lots 14, 15, 27, 34 and 40) that involve septic lines crossing channels to access a suitable septic fields. The channel crossings will be achieved with open trench and backfill. Explain the purpose of the proposed work: The purpose of the work is to access highground to facilitate development of the property. Because of grading constraints, the two subdivision road crossings are needed to access the entirety of the property. Impacts associated with the installation of a septic line are neccesary for proper sewage treatment of Lots 14, 15, 27, 34 and 40. 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. DWQ# 08-1163. USACE SAW-2008-02309. DWQ (Sue Homewood) conducted a site visit on August 25, 2008. USACE (Andrew Williams) conducted a site visit on August 19, 2008. The site plan has been modified to minimize impacts to jurisdictional channels. The changes in impacts are reflected in this PCN submittal. 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. N/A 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 Page 3 of 9 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. Provide a written description of the proposed impacts: Stream impacts include two stream crossings for subdivision roads. S 1 is for 103 if of important channel. S2 is for 107 if of intermittent unimportant channel. Endwalls and off-line riprap aprons are being utilized to minimize the impacts associated with the crossings. Impacts S3, S4, S5, S6, and S7 are septic line crossings of channels to access the suitable septic field, each impacting 21f for a total of 10 if of temporary impacts. Impact S8 is a temporary impact of 10 if involving the use of a cofferdam for dewatering during the installation of the culvert for impact S 1. The old farm pond dam will be removed resulting in 0.0113ac of open water impacts. The channel will be re-established in its original location. 1. 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 floodin . Wetland Impact Site Number (indicate on map) Type of Impact Type of Wetland (e.g., forested, marsh, herbaceous, bog, etc.) Located within 100-year Floodplain (yes/no) Distance to Nearest Stream (linear feet) Area of Impact (acres) Total Wetland Impact (acres) 0 2. List the total acreage (estimated) of all existing wetlands on the property: 0.385 3. 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. Stream Impact Perennial or Average Impact Area of Number Stream Name Type of Impact Stream Width Length Impact (indicate on ma) Intermittent? Before Impact (linear feet) (acres) Page 4 of 9 SI UT to Mayo River Permanent/Culvert Perennial 5 103 0.01 S2 UT to Mayo River Permanent/Culvert Int/unimport 2 107 .005 S3 UT to Mayo River Temporary Perennial 3 2 0.0001 S4 UT to Mayo River Temporary Perennial 3 2 0.0001 S5 UT to Mayo River Temporary Perennial 7 2 0.0003 S6 UT to Mayo River Temporary Perennial 7 2 0.0003 S7 UT to Mayo River Temporary Perennial 7 2 0.0003 S8 UT to Mayo River Temp/cofferdam Perennial 5 10 0.001 Total Stream Impact (by length and acreage) 230 0.0171 4. 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. floodiniz. drainage. bulkheads. etc. Open Water Impact Site Number (indicate on ma) Name of Waterbody (if applicable) Type of Impact Type of Waterbody (lake, pond, estuary, sound, bay, ocean, etc.) Area of Impact (acres) owl fill slope for road pond 0.0113 Total Open Water Impact (acres) 0.0113 5. List the cumulative impact to all Waters of the U.S. resultine from the Droiect: Stream Impact (acres): 0.0171 Wetland Impact (acres): 0 Open Water Impact (acres): 0.0113 Total Impact to Waters of the U.S. (acres) 0.0284 Total Stream Impact (linear feet): 230 6. Isolated Waters Do any isolated waters exist on the property? E] 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 USAGE. 7. 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 Page 5 of 9 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. Impacts Sland S2 are necessary to gain access to high ground. Endwalls and off-line riprap aprons are being utilized to minimize stream impacts. The site plan has been modified to eliminate two driveway crossings and place Impact S2 in the portion of channel (overflow gully) determined by the Corps to be intermittent unimportant. The old dam will be removed to allow for the placement of the Impact S2 in the intermittent unimportant portion of channel. Impact S3, S4, S5, S6, and S7 are necessary to access suitable septic fields for Lots 14, 15, 27, 'AA and all Impact S8 is necessary for working in the dry during culvert installation. 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. Page 6 of 9 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. 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. Mitigation is in the form of avoidance and minimization and preservation Endwalls are being utilized to minimize impacts to streams. The remainder of the streams (approx 4100 M will have a buffer placed on them as can be seen on the attached map The wetlands (0.385 ac) on site will be preserved. The removal of the dam will result in approximately 400 if of new/restored channel 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): Amount of buffer mitigation requested (square feet): Amount of Riparian wetland mitigation requested (acres): Amount of Non-riparian wetland mitigation requested (acres): Amount of Coastal wetland mitigation requested (acres): IX. Environmental Documentation (required by DWQ) 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)? Page 7 of 9 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 213 .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify N/A)? 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. Impact Required Zone* f__-__,V__.' Multiplier 7,4:,:._ :,,_ I I I 13 (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. 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. 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 residential development has larger than 1 acre lots resulting in a low % impervious area. XII. Sewage Disposal (required by DWQ) Page 8 of 9 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. Onsite septic 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: No utilities, spur roads etc. will be created in a manner that will facilitate further development as a result of this development. 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). N/A Jc, _ 0 Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Page 9 of 9 00 0 0 N O N ? \? \. ICI z Y ? o I 3 ? ? o T ? o z w U ? O o U N 7.p N 1 - Cxd ?S O d W ^•?? .e6 ? ? P o U ?I In °,. a C P ?? 6 a o f A 0000 S a O ?+ N oft ?. o ° a r ?} O as !t: U 00. • ,,h P ? N ? z '01 tr--- , I ® ? d p ?? o ?. M ®? o ® is OD p U G? y O -? 60* E m 2: CL V4 < 2 j 01 i? O m N ® ?C a l C a.. 'a 0. ' ?r U) N K 90 E oc "' ,n 8 e I e+ t w A C V -so CL 14J?' G C a E ® eB. ?+ v PdOg 3 y ` A P?°s ®" of, ® j ?\; 20 NO 'eg c f 6 E M 1 49 Pc NO, ?• '? C I C ® P° U L-j 1:y c I ? 1p e t N V c• P ?o N ,P, - ,<0 3 w ? as - o II C H I b9Ei' ? ? O Q21 NOW I? Z PLAN . SGA? : t'! =40' ? -fE'M?'.. sT?aN1 GRosSu.1G 'Ib O ,?h^? ^A?i(V ' Qf ? 'T?Mp, G?F?ER EWWALI Q ,? 4-? l4 o? v __ GUARDRAIL 0 Rx, HWT, 770 ? GFiAb? r. ?. ?X15TiNCa C H4IKel- i; anADE ~ 1 G #? / P F 1L 1MST,ALL 1 .04 ScALE:tu :?,? $t?LW EX15T, XIST. ?aNn.piZA.4tJ `Tb ??? (Tb 15E QEWVEED Br u55D To pIZ?4s PoWd AND f A.5 EXIST, ?t FtlssF?? TEMP?' G N 1-TI fs Pt E : Q? D?V?Ks? Ta ? e ` ? 1C?lq?p °Q? P ? Q3+;f0 O'I?Ro? d3 ? ? ^ J b e e0i pt1pqR ?i qd ??oR° vhLJ7.7 4'? C, ptiq`' a? 'qr c?i a 98764 6A ti? ?6'?¢WQ cowlsok Q?o? .fib toP " 18 O 1~ b4' Mao a 10 6? ? N ab ae?' d'' k y? 3 0?? o°?' yak Q 06 o tog b o? 1 0i de' C'? R w1 d o dt dt' 1 F160 anti ?•` ,?°? ° a?? ?'__'°??'a????.,?' ? ?????? ? a?,? ? . ,?d???,?' EMSMN6 e?. GRAM • ?L.OP? ? ? .D? 4 MOr-11-1n15n''LL BeLDVJ 5CAL.S :111'4 ` Ex%5T, 5TM W MP Dam Removal Construction Sequence for Mayo Forest The engineer proposes to utilize existing drain line to drain pond and use to keep drained until new 36" pipe is installed. A geotechnical testing firm will determine whether old dam material is suitable for road bed. Dam will not be removed entirely, may just widen out for new roadbed. Culvert Installation Construction Sequence Prior to beginning culvert installation, install temporary stream crossing if needed. Divert runoff from roadway to sediment traps; diversions to remain in place until culvert is in place. Install coffer dam upstream of culvert and install rock silt screen downstream of culvert and puny stream flow around culvert installation as required during installation. Camplete culvert installation and backfill over culvert. Install silt fence along toe of slope over the upstream and downstream ends of culvert and divert flow at toe of slopes to temporary sediment traps,. Install rip-rap apron at culvert outlet (remove rock silt screen as required). Remove temporary stream crossing and cofferdam; restore disturbed stream channel to original stream bed contours, permnently seed disturbed areas. Conplete roadway fill and permanently seed fill slopes. u .