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HomeMy WebLinkAbout20091161 Ver 2_Minor Variance Application_201701061616 East Millbrook Road, Suite 160 Raleigh, NC 27609 m o f f a t t & n i c h o l (919) 781-4626 Fax (919) 781-4869 www.moffaftnichol.com January 6, 2017 Karen Higgins 401 & Buffer Permitting Unit NC Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Dear Ms. Higgins: Attached please find an application for a revised Minor Variance from the Neuse River Riparian Protection Rules for a house at 3519 Turnbridge Drive in Raleigh, NC. As you know, the Division of Water Quality (now Division of Water Resources) approved a Minor Variance for this project on November 9, 2009 — DWQ Project # 2009-1161 based on an application dated October 26, 2009 (see attached at end of package). That Minor Variance provided conditional approval for 38 square feet of impact to Zone 2 of the buffer at this location. During our work to address condition 5 (Diffuse Flow) of that Minor Variance, we discovered impacts to the buffer (Zones 1 and 2) that were not reported in our original application — namely eight plastic drainage pipes which used to carry stormwater from downspouts at the house. These downspouts have now been connected to on-site rain gardens developed in coordination with Danny Smith of the Raleigh Regional Office of the Division of Water Resources in order to comply with Condition 5 of the Minor Variance. These pipes have now been removed from the buffer, soil placed in the trenches back to the natural grade, and the areas seeded and mulched to provide stability. This work has required the temporary impact to 181 square feet of buffer (30 square feet in Zone 1 and 151 square feet in Zone 2). The purpose of this application for a revised Minor Variance is to address this permitting oversight and make certain that all the unavoidable buffer impacts (temporary and permanent) have been reported to DEQ and appropriately permitted. Please call me at 919-522-6364 if you have any questions or I can be reached by email at idorney@moffattnichol.com. Cc: Ron Garber; Boxley, Sincerely, MOFFATT & NICHOL nmental Scientist ria email) DWR State of North Carolina Department of Environment and Natural Resources Division of Water Resources Division of Water Resources 15A NCAC 02B.0233 (8)(b),.0243 (8)(b),.0250 (11)(b),.0259 (8)(b),.0267 (11)(c),.0607 (e)(2) Protection and Maintenance of Riparian Areas Rules - Variance Application FORM: VAR 10-2013 PLEASE IDENTIFY WHICH RIPARIAN AREA PROTECTION RULE APPLIES: xNeuse River Basin (15A NCAC 02B.0233) ❑ Major Variance x Minor Variance ❑ Catawba River Basin (15A NCAC 02B.0243) ❑ Randleman Lake Water Supply Watershed (15A NCAC 02B.0250) ❑ Major Variance ❑ Minor Variance ❑ Tar -Pamlico River Basin (15A NCAC 02B.0259) ❑ Major Variance ❑ Minor Variance ❑ Jordan Lake Water Supply Nutrient Strategy (15A NCAC 02B.0267) ❑ Major Variance ❑ Minor Variance ❑ Goose Creek Watershed (15A NCAC 0213.0606 & 15A NCAC 02B.0607) A. General Information 1. Applicant's Information(if other than the current property owner): Name: Same as Property Owner listed below Title Street Address: City, State & Zip: Telephone: Email: 2. Property Owner/Signing Official (person legally responsible for the property and its compliance): Name: Charles W. Teague Title: President; Teague & Skelton, Inc. Street Address: 1313 Enderbury Drive, City, State & Zip: Raleigh, NC 27614 Telephone: 919-676-7644 Email: woody@woodyteague.com FORM: VAR 10-2013 3. Agent Information: 3a. Name: Company Affiliation Street Address: John R. Dorney Moffatt & Nichol 4700 Falls of Neuse Road, Suite 300 City, State & Zip: Raleigh, NC 27609 Telephone: 919-781-4626 (w): 919-522-6364 (m) E-mail: jdorney@moffattnichol.com 3b. Attach a signed and dated copy of the Agent Authorization letter if the Agent has signatory authority for the owner. 4. Project Name (Subdivision, facility, or establishment name): 3519 Turnbridse Drive House 5. Project Location: 5a. Street Address: 3519 Turnbridge Drive City, State & Zip: Raleigh, NC 27609 5b. County: Wake 5c. Site Coordinates (in decimal degrees): 35.8284376N Latitude; -78.6399497W Longitude 5d. Attach an 8 % x 11 excerpt from the most recent version of the USGS topographic map indicating the location of the site. 5e. Attach an 8'/: x 11 excerpt from the most recent version of the published County NRCS Soil Survey Map depicting the project site. 6. Property Information: 6a. Property identification number (parcel ID): 1705667902; Real Estate ID Number 0071532 6b. Date property was purchased: February 25, 2005 6c. Deed book n/a and page number n/a 6d. Map book 1947 and page number 79 6e. Attach a copy of the recorded map that indicates when the lot was last platted. 7. Is your project in one of the 20 Coastal Counties covered under the Coastal Area Management Act (CAMA)? ❑ YES x NO 7a. If you answered yes above, in which AEC do you fall (30 ft or 75 ft)? 7b. If you answered yes above, what is the total percent of impervious cover that you have proposed within the AEC? FORM: VAR 10-2013 Page 2 of 8 8. Directions to site from nearest major intersection: From the 1-440 Beltline, take the Six Forks Exit south, turn right onto Ramblewood Dvive and then left onto Bellevue Road, turn right onto Turnbridge Drive and go to property at 3519 Turnbridge Drive on the right. 9. Stream associated with riparian buffer to be impacted by the proposed activity: Name Water Quality Classification UT Crabtree Creek C: NSW 9a. For Goose Creek only: Is the buffer in the 100 -year floodplain? ❑ YES ❑ NO 10. List any permits/approvals that have been requested or obtained for this project in the past (including all prior phases). Date Applied: Date Received: Permit Type: October 26, 2009 November 9, 2009 Minor Variance — Neuse River Buffer Rules (DWQ Project # 2009-1161) B. Proposed Activity Project Description 1a. Provide a detailed description of the proposed activity including its purpose: The site consists of a 0.45 acre lot with one residential house located on the property. The lot is located in a residential neighborhood that was developed in the 1970's in the northern side of the City of Raleigh. Figure 1 depicts the location of the property on the US Geological Survey (USGA) Raleigh West, NC 7.5 minute quadrangle topographic map. Figure 2 shows the location of the site on the applicable Wake County Soil Survey map. The activity is to retain a covered porch as well as brick and wooden support columns for the decks in 38 square feet of Zone 2 of the riparian buffer as allowed by the NC Division of Water Quality in a Minor Variance issued on November 9, 2009. In addition, during installation of two rain gardens outside the protected buffer in order to meet condition 5 of the Minor Variance, eight black, plastic drainage pipes were discovered in Zones 1 and 2 of the buffer and have now been physically removed. This has resulted in disturbance to the ground surface in the buffer of 181 square feet (30 square feet in Zone 1 and 151 square feet in Zone 2). 1b. Attach a site plan showing the following items as applicable to the project: 0 Development/Project name 0 Revision number & date 0 North arrow 0 Scale (1" = 50' is preferred) 0 Property/project boundary with dimensions 0 Adjacent streets and roads labeled with names and/or NC State Road numbers 0 Original contours and proposed contours 0 Perennial and intermittent streams, ponds, lakes, rivers and estuaries 0 Mean high water line (if applicable) 0 Wetlands delineated, or a note on plans that none exist Location of forest vegetation along the streams, ponds, lakes, rivers and estuaries FORM: VAR 10-2013 Page 3 of 8 0 Extent of riparian buffers on the land including Zone 1 and Zone where applicable 0 Location and dimension of the proposed buffer impact (label the area of buffer impact in Won the plan) 0 Details of roads, parking areas, cul-de-sacs, sidewalks, and curb and gutter systems 0 Footprint of any proposed buildings or other structures 0 Discharge points of gutters on existing structures and proposed buildings 0 Existing drainage (including off-site), drainage easements, and pipe dimensions 0 Drainage areas delineated C. Proposed Impacts and Mitigation 1. Individually list the square footage of each proposed impact to the protected riparian buffers: Buffer Impact Required — Number' — Reason for Impact Buffer Zone 1 Impact Zone 2 Impact Permanent (P) or (square feet) Mitigation (square feet) (square feet) Temporary (T) Required (2 for Catawba only) B1 - x P [:]T Screen porch and deck ❑ Yes x No 0 38 supports B2 - P x T Removal of plastic ❑ Yes x No 30 151 drainage pipes from buffer B3 -❑P ❑T ❑ Yes ❑No Total Buffer Impacts 219 'Label on site plan 2. Identify the square feet of impact to each zone of the riparian buffer that requires mitigation from the table above. Calculate the amount of mitigation required. 'For projects in the Goose Creek Watershed, list all riparian buffer impacts as Zone 1 and use Zone 1 multiplier. 3. Provide a description of how mitigation will be achieved at your site pursuant to the mitigation requirements of the applicable river basin/watershed. On-site restoration of the 151 square feet of temporary impact was done by backfilling the trenches from the drainage pipe with local soil to the level of the surrounding soil, spreading grass seed, and covering with wheat straw. 3a. Is buffer restoration or enhancement proposed? ❑ Yes x No If yes, attach a detailed planting plan to include plant type, date of plantings, the date of the one-time fertilization in the protected riparian buffers, and a plan sheet showing the proposed location of the plantings. 3b. Is payment into a buffer restoration fund proposed? ❑ Yes x No FORM: VAR 10-2013 Page 4 of 8 Required Zone Total Impact Multiplier Mitigation (square feet) (square feet) Zone 1' _ 3 TT (2 for Catawba only) Zone 2 _ 1.5 Total Buffer Mitigation Required: 'For projects in the Goose Creek Watershed, list all riparian buffer impacts as Zone 1 and use Zone 1 multiplier. 3. Provide a description of how mitigation will be achieved at your site pursuant to the mitigation requirements of the applicable river basin/watershed. On-site restoration of the 151 square feet of temporary impact was done by backfilling the trenches from the drainage pipe with local soil to the level of the surrounding soil, spreading grass seed, and covering with wheat straw. 3a. Is buffer restoration or enhancement proposed? ❑ Yes x No If yes, attach a detailed planting plan to include plant type, date of plantings, the date of the one-time fertilization in the protected riparian buffers, and a plan sheet showing the proposed location of the plantings. 3b. Is payment into a buffer restoration fund proposed? ❑ Yes x No FORM: VAR 10-2013 Page 4 of 8 If yes, attach an acceptance letter from the mitigation bank you propose to use or the NC Ecosystem Enhancement Program stating they have the mitigation credits available for the mitigation requested. FORM: VAR 10-2013 Page 5 of 8 D. Stormwater 1. Provide a description of how diffuse flow will be maintained through the protected riparian buffers (e.g., re -planting vegetation or enhancement of existing vegetation, gutter splash pads, level spreader to control of runoff from impervious surfaces, etc.). Two rain gardens have been constructed (and one more is planned to be constructed) on the property outside Zone 2 of the stream buffer and connected to the existing downspouts from the house. During construction of the rain gardens, eight black plastic drainage pipes were discovered that previously had been connected to the downspouts and carried stormwater into the protected buffer. These downspouts have now been directed to flow into the rain gardens and the pipes previously located in the buffer have been removed, their footprints filled with local soil to match the surrounding ground level, and covered with wheat straw and grass seed. Rain gardens are or have been constructed following the design in the DENR Stormwater Manual (NCDENR Stormwater BMP Manual Chapter Revised 07-24-09; Chapter 12 - Bioretention) by a contractor (Norman Rabins of Garden & Art Landscapes who received his Certification as a Certified Residential Rain Garden Professional on January 19, 2012 from the Stormwater Engineering Group at NC State University under the supervision of Kris Bass of Kris Bass Engineering. All areas on the site (in or out of the protected buffer) have been seeded and covered with wheat straw. 1a. Show the location of diffuse flow measure(s) on your site plan. 1b. Attach a completed Level Spreader Supplement Form or BMP Supplement Form with all required items for each proposed measure. 1c. Attach an Operation and Maintenance (O&M) Form for each proposed level spreader or BMP. 2. For Major, Catawba, and Goose Creek variance requests, provide a description of all best management practices (BMPs) that will be used to minimize disturbance and control the discharge of nutrients and sediments from stormwater. 2a. Show the location of BMPs on your site plan. 2b. Attach a Supplement Form for each structural BMP proposed. 2c. Attach an Operation and Maintenance (O&M) Form for each structural BMP proposed. E. Demonstration of Need for a Variance The variance provision of the riparian buffer rules allows the Division or the Environmental Management Commission to grant a variance when there are practical difficulties or unnecessary hardships that prevent compliance with the strict letter of riparian buffer protection. 1. Explain how complying with the provisions of the applicable rule would prevent you from securing a reasonable return from or make reasonable use of your property. Merely proving that the variance would permit a greater profit from the property shall not be considered adequate justification for a variance. The Division will consider whether the variance is the minimum possible deviation from the terms of the applicable Buffer Rule that shall make reasonable use of the property possible. The project consists of a single-family home constructed in 2006. The builder purchased this lot in 2004. The City of Raleigh notified the builder that the stream channel and riparian buffer needed to be included in the site plan for the lot. The builder retained Sullivan Surveying to locate the stream channel on the lot and set survey pins for the house foundations to ensure that the house would not encroach into the buffer. The house was built and scheduled to be sold in 2006. After numerous closing delays, contract disputes, and a change order to the decks, the buyer hired Cawthorne, Moss & Panciera, PC to resurvey the stream channel in 2009. This survey also included the stream channel on the adjacent lot (Lot 168). The new survey showed that FORM: VAR 10-2013 Page 6 of 8 the rear deck and screened porch are partially located within Zone 2 of the riparian buffer. Both the deck and the screened porch had concrete patios poured underneath. Figure 3 shows the location of the house, deck, and screened porch in relation to the riparian buffers on-site. The previous consultant met with Amy Chapman on site to review the extenuating circumstances in which the builder attempted to follow the rules but after construction discovered that a small corner of the screened porch was located within Zone 2 of the riparian buffer. The NC Division of Water Quality issued an After -the -fact Minor Variance Authorization on November 9, 2009 (Project Number 2009-1161) with additional conditions. During construction of the two rain gardens built outside the buffer in order to meet Condition 5 (Diffuse Flow), eight black plastic drainage pipes were discovered mostly in Zone 2 of the buffer that carried stormwater from the downspouts of the house. These black plastic pipes have been removed which resulted in 181 square feet of temporary impact to the buffer (30 square feet of temporary impact to Zone 1 and 151 square feet of temporary impact to Zone 2). These areas have been backfilled to the surrounding ground surface with top soil, seeded with grass seed and covered with wheat straw. These downspouts have now been connected to the two rain gardens or will be connected to the remaining rain garden that is soon to be constructed. 1. Explain how the hardship results from application of the Buffer Rule to the property rather from other factors such as deed restrictions or other hardships (e.g. zoning setbacks, floodplains, etc.). As described above, the encroachment into the buffer was only discovered during a subsequent survey of the property on the adjacent lot by a prospective buyer. The builder had measured the buffer from the main lot (Lot 164) during construction and located the house to avoid impacts to the buffer. The unanticipated infringement into the buffer resulted from a subsequent survey done on the adjacent lot (Lot 168) after the house was constructed. 2. Explain how the hardship results from physical nature of the property, such as its size, shape, or topography, which is different from that of neighboring property. The builder has removed the concrete patio from the riparian buffer located underneath the deck and screened porch. Because the deck is in excess of 12 feet in height and the impervious surface that is within the buffer beneath them has been removed from the buffer and as explained in a field meeting the Amy Chapman of the then Division of Water Quality and the previous consultant on October 20, 2009, we understand that these features quality for the deck exemption. As described in Item 4 below in more detail, the builder measured the buffer from the main lot (Lot 164) and made certain that construction was outside the buffer zones. Only a subsequent survey done for a potential buyer from stream located on the adjacent, upslope lot (Lot 168) revealed that the buffer (when measured from the stream on the adjacent lot) had a small part of the screened porch located within Zone 2 of the buffer. The builder's architect prepared a rendition of the changes to the screened porch to remove it completely from the buffer, but the buyer would not agree to the structural changes. Losing a contacted buyer that the builder has already invested so much time and resources in would inflect a significant economic hardship to the builder. 3. Explain how the hardship results from physical nature of the property, such as its size, shape, or topography, which is different from that of neighboring property. The hardship and encroachment into a small area of Zone 2 of the buffer was only discovered during a subsequent survey from the adjacent lot (Lot 168) which revealed that a small corner of the covered porch (38 square feet) is in Zone 2 when measured from that adjacent lot. 4. Explain whether the hardship was caused by the applicant knowingly or unknowingly violating the applicable Buffer Rule. The applicant carefully measured the stream buffer on the main lot (Lot 164) before construction and made certain that construction of the house was outside the measured buffer. A subsequent survey done for a potential buyer from the stream located on the adjacent, upslope lot (Lot 168) revealed that the buffer (when measured from the stream on the adjacent lot) had a small part of the screened porch located within Zone 2 of the buffer (38 square feet including the wooden and brick support columns for the deck and porch). FORM: VAR 10-2013 Page 7 of 8 During construction of the two rain gardens as required by the Minor Variance issued by the NC Division of Water Quality on November 9, 2009, eight black plastic drainage pipes were discovered and removed from the buffer. The downspouts for these drainage pipes have been directed to flow into the rain gardens (one additional rain garden is planned and two downspouts will be connected to this rain garden) and the now superfluous drainage pipes have been removed from the buffer, the ground surface restored, and all disturbed, areas reseeded. 5. For Neuse, Tar -Pamlico, Jordan Lake and Goose Creek only: Did the applicant purchase the property after the effective date of the applicable Buffer Rule and then request a variance? Yes but as described above the encroachment into the buffer was unintentional and a result of a subsequent survey done by a prospective buyer from the adjacent lot (Lot 168). 6. Explain how the hardship is rare or unique to the applicant's property, rather than the result of conditions that are widespread. The hardship resulted from the new survey on the adjacent lot (Lot 168) as described earlier and therefore is unique to this particular property. F. Deed Restrictions By your signature in Section G of this application, you certify that all structural stormwater BMPs required by this variance shall be located in recorded drainage easements, that the easements will run with the land, that the easements cannot be changed or deleted without concurrence from the State, and that the easements will be recorded prior to the sale of any lot. G. Applicant's Certification I, Charles Teague, Jr. (print or type name of person listed in Section A, Item 2), certify that the information included on this permit application form is correct, that the project will be constructed in conformance with the approved plans and that the deed restrictions in or ance with Section F of this form will be recorded with all required permit conditions. Signature: Date: S % FORM: VAR 10-2013 Page 8 of 8 r er ��If! f • rri� •„n, + r.•,�rr !':.,�i� .tib, r -:`•i i{ uf...^i. `s° I.e.�+YgrJ �ro rn 41 It � � ��r-"� 1 r ✓ P � • ,i k , � ��` 1 :;yam r ! , t � o-, �.,.e,..�'t ' .. 1 l tyf r' •(,�j3 ,_vs •��F�r , yF� �{'�,iA ,�l;. .,t �� r r•v'" �. �'�w�.IYM”/NrRvw !$r ;;�. .'a. � � \� -y�� J � + 7� t I * �' Y 4 �'i 1 [• r , ,�14 ' u' h ��I� � ip �� f • � I ..,1.4��l ��h� �" � "!i_ fr �,) 1: �#� •I �,' �1.. � \ I _ � Rin•, ' •r • �Y. �R� jrk o r•,• - •�.., 1 '.,}< �r �Rulh rab ! �4 iA ti b �, • rti Isr y s h'•, + _ .. r?f , r Orr r ! '{ + } - -p 'itt�l yi �k•' ile. a [r �4 •r f �r � r� I� `6 ,, 9�"K •rr• , �r l f r II�1 i !/ � s � � � r �. At 'rf { 'r a � "A '� � lo- e • 1= � �'�t . , ! 1 � a• , �u 41 1 �' • � it GRAPHIC SCALE N r+=2000' USGS LOCATION MAP 2000' 0 2000' 164 BELLEVUE RALEIGH, WAKE COUNTY, NC ,,.....a,• nAl r.: 9-08-09 USES 7.s TOPO (�11n11: •� Itnl,rlGl•1 WESTf�y BURDETTE LAND CONSULTING, INC. DRAWN BY: 'rMB 10212 Creedmoor Road - Raleigh, North Carolina 27615 CIIK'D BY: JA13 9 Telephone (919) 841-9977— Fax (919) 841-9909 PaoJEcT#: 9280 FIGURE #: 1 44111 "NO, owl P14. ro 91 EO 6 G_ Ld 0 N m 0 0 o: 0 a 0 0 a U J m O L0 Ld BRICK I 3 STORY OWELU40 a MfjJ1 FENCE m �( 20' OITY OF RALEIGH � f 1 '+ ` SANITARY SEWER I EASEMENT f20. CONSTRUCTION��/ ! 10' PER EASEMENT 1MIAMACE [ASEMI fN NERS£C N/1BROC1i5 i1 T� SEht7LiE do S'KISELTiRt, IVIG. O.B. 11239. PG. BS4 B.M. 2005, PG. 1736 PIN 01705.11-66-7809 4� rc I EIP SURVEY FOR AUBREY S. TOMLINSON, JR. LOT 164, BELLEVUE TERRACE t 3519 TURNBRIDGE DRIVE PIN #1705.11-66-7809 D.B. 11239, PG. 654 7i B.M. 2005, PG. 1736 VICINITY MAP CITY OF RALEIGH LEGEND: WAKE COUNTY, NORTH CAROLINA EIP - EXISTING IRON PIPE MARCH 30, 2009 EPK - EXISTING PK NAIL NIP - NEW IRON PIPE SET 50 25 0 50 100 R/W - RIGHT OF WAY CATV - CABLE TV BOX EB - ELECTRIC BOX TEL - TELEPHONE PEDESTAL SCALE 1 "=50' PP - POWER POLE OHL- OVERHEAD LINE I j LP -LIGHT POLE t WM - WATER METER KENNETH M. do f J + I I WV - WATER VALVE DEBRA B. MANESS + I I CO - SEWER CLEAN-OUT D.B. 3192. PD. TS7 JJ I I -- B.M. 5m PG. 79' PIN 01705,11-67—DOB3 p� _S_87'45'1 3" E - 149.97' 9> s N/F C/ DAVID k DANA COMAN J jp X191 D.B. 13149, PC. 905 / BRIDGE I' SCkEENED 9 B M 2006 PG 315 100' NEUSE RIVER r RIPARIAN BUFFER (50' EACH SIDE TOP OF BANK) CONCRETE' PORCH PA'DO BELOW 0.446 KI 4p ���. PIN /1705.11-66-7999 Q, LINE TYPE LEGEND PROPERTY UNE — UNE SURVEYED — RIGHT—OF—WAY ADJOINING UNE — UNE NOT SURVEYED OVERHEAD LINE — — BUILDING SETBACK -- — — — —— EASEMENT — BUFFER — FLOOD HAZARD SOILS CAWTHORNE, MOSS & PANCIERA, P.C. Professional Land Surnprs 333 S. White Street Post Office Box 1253 Wake Forest, N.C. 27588 (919)556-3148 I DECLARE THAT THIS SURVEY COMPLIES WITH THE NORTH CAROLINA STANDARDS OF PRACTICE FOR SURVEYING, (SECTION 1600) FOR CLASS A SURVEYS AND THAT THE CALCULATED RATIO OF PRECISION BEFORE ADJUSTMENTS IS 1:10,000+. FURTHERMORE, PROPERTY CORNERS SHOWN ARE PRIMARY CONTROL MONUMENTATION FOR THE RE— ESTABLISHMENT OF PROPERTY CORNERS IN THE ABSENCE OF GRID MONUMENTS AND OTHER SUBDIVISION PROPERTY CORNERS. THIS SURVEY IS NOT TO BE RECORDED WITH— OUT THE WRITTEN AUTHORIZATION OF THE SURVEYOR. PROFESSIONAL LAND SURVEYOR L— LINE TABLE LINE LENGTH BEARING L-1 69.89' N 02'20'17" L-2 69.62' S 28'53'52" W L-3 69.69' N 02'21'49" F ���. PIN /1705.11-66-7999 Q, LINE TYPE LEGEND PROPERTY UNE — UNE SURVEYED — RIGHT—OF—WAY ADJOINING UNE — UNE NOT SURVEYED OVERHEAD LINE — — BUILDING SETBACK -- — — — —— EASEMENT — BUFFER — FLOOD HAZARD SOILS CAWTHORNE, MOSS & PANCIERA, P.C. Professional Land Surnprs 333 S. White Street Post Office Box 1253 Wake Forest, N.C. 27588 (919)556-3148 I DECLARE THAT THIS SURVEY COMPLIES WITH THE NORTH CAROLINA STANDARDS OF PRACTICE FOR SURVEYING, (SECTION 1600) FOR CLASS A SURVEYS AND THAT THE CALCULATED RATIO OF PRECISION BEFORE ADJUSTMENTS IS 1:10,000+. FURTHERMORE, PROPERTY CORNERS SHOWN ARE PRIMARY CONTROL MONUMENTATION FOR THE RE— ESTABLISHMENT OF PROPERTY CORNERS IN THE ABSENCE OF GRID MONUMENTS AND OTHER SUBDIVISION PROPERTY CORNERS. THIS SURVEY IS NOT TO BE RECORDED WITH— OUT THE WRITTEN AUTHORIZATION OF THE SURVEYOR. PROFESSIONAL LAND SURVEYOR L— N �•O s MINIMUM AM',0UNT 20.0' OF CONPRETE TO`�' BE FjEMOVED FRAM ZONE 2 � ` / WOOD ST/AIRS TO REMAIN ` MINIMUM,AMOUNT OF CONCRETE TO ' BE REMOVED A„ FRQI ZONE 2 RICK DECK ,• .,,,_, SUPPORTS TO i REMAIN i NOTE: LL 1 J SEE ATTACHED SURVEY"t�ROM CATHORNE, MOSS, AND PANCIERA,'OR LOT LAYOUT AND FEATURE LOCATION$ M 2.) THIS AP DOES NgT/REPRESENT A SURVEY OF SITE FEATURES✓FOR LOT 164 AND 1S TO BE USED FOR INFOR�AATIONAL PURPOSES ONLY GRAPHIC SCALE V=10' /I i SCREENED PORCH ABOVE CONCRETE PATIO BELOW DECK ABOVE CONCRETE PATIO BELOW NEUSE RIVER RIPARIAN BUFFER IMPACT MAP BELLEVUE LOT 164 RALEIGH, WAKE COUNTY, NC N DATE: 10-26-09 SCALE: 1'= 10' ' = BURDETTE LAND CONSULTING INC. DRAWN BY: TMB CHKV BY: JAB 10212 Creedmoor Road -Raleigh, North Carolina 27615 PROJECT #: 9280 FIGURE#: 3 ` g Telephone (919) 841-9977 — Fax (919) 841-9909 4700 Falls of Neuse Road, Suite 300 Raleigh, NC 27609 (919)761-4626 m o f f a t t& n i c h o l www.moffaftnichol.com MEMORANDUM AGENT AUTHORIZATION FORM PROPERTY LEGAL DESCRIPTION: LOT NO. 164, Block 9, Bellevue Terrace; Book of Maps 1947, Page 79, Wake County Registry PARCEL ID: #1705667902; Real Estate ID: 0071532 STREET ADDRESS: 3519 Turnbridge Drive, Raleigh, NC 27609 Property Owner Name Please print: Property Owner: Teague & Skelton, Inc., Charles W. Teague, Jr., President The undersigned, registered property owners of the above noted property, do hereby authorize John R. Dorney, of Moffatt & Nichol, Raleigh to act on my behalf and take all actions necessary for the processing, issuance and acceptance of this permit or certification and any and all standard and special conditions attached. Property Owner's Address (if different than property above): 1313 Enderbury Dr., Raleigh, NC 27614 Telephone: 919-676-7644; Fax 919-676-7049 We hereby certify the above information submitted in this application is true and accurate to the best of akZnwledge Signature) _ f/tom /�� Printed) Dated: 2-12, t !e' xsz vx �u —.wm w�waav 0N 4aroo9 9091-99-11'SOLL :Nld •,0 "a 5j. -q4 -Op VI,n1 ISE (�) Z991'096'616 nue GNM ON '4aoloN 6uuaeul6u3 8808 euyl 'MOP -0 non $ %I wrmq uOld Aejomwjo;s a0ojaal annalla9 b9 L logy erwe a �•m O .Cya m G 8d �m"uam � Ti 02 mip 8"p7 99 N " a � �o� d3 a o� $ g -0 4. 1=s, A$ IE cgs"a Kris Bass Engineering, PLLC 625 S Lakeside Dr. Raleigh, NC 27606 Office: 919.960.1552 Email: kbass@kbens.org Lot 164 Bellevue Terrace Stormwater Plan Sub -basin: 03-02-02 (Neuse) Hydrologic Unit: 03020201 Receiving Water: Crabtree Creek: C, NSW Project Narrative This project involves the construction of three rain gardens to control stormwater runoff from a residential property. The purpose of the gardens is primarily for Neuse river buffer protection and to prevent regular concentrated flows into the buffer area. These rain gardens have been sized to capture runoff from the 1 inch storm. The entire 1 inch storm volume will be stored and infiltrated into the rain garden surface and surrounding soils. The rain gardens will collect runoff from the rooftop through a gutter and drain system. A water test was used to confirm the area of roof draining towards each rain garden. One area of the roof appears to drain into the ground and has no outlet that can be collected. These rain gardens were designed using the latest guidance on Backyard Rain Gardens from NC State University. The gardens have been sited outside of the riparian buffer boundaries on the project site. They are located on a sloping surface, which will require minor excavation and building of a berm to level the garden surface. Due to existing slopes, some minor shifting of the garden locations may be done in the field to provide the best fit. Construction will be overseen by the Project Engineer and inspected prior to final approval. The garden surface will utilize existing soils. Infiltration testing on-site (see attached data) has indicated these soils are suitable to provide the desired drainage rate. As a result, no media or underdrains are proposed as a part of the rain garden plan. After grading, the surfaces will be tilled to maximize infiltration capacity. A berm will be constructed to provide the necessary storage depth for each garden. Planting Typical rain garden species have been selected for the proposed planting for the garden. The plan includes a mixture of herbaceous species that shall be installed according to specifications and at correct center spacing for each species of plant. The rain garden and berm shall be covered with a minimum of 3 inches of triple shredded hardwood mulch at project completion. Conclusions The proposed plan will capture rooftop runoff from this residence and protect an existing riparian buffer area. The designed rain gardens will provide both water quality and flow protection benefits. Soil Percolation Test - 3519 Turnbridge Drive, Raleigh, NC Depth of water drained from hole (inches) North Hole South Hole Original depth of hole 8 inches 7 inches Permabilit y rate (in/hr) Start 5/24/2016 0 hrs 0 4.51 0 7. 16 hrs 21 hrs 5 7 40 hrs 6.5 7 47 hrs 7 7 0.4 Permit (to be provided by DWQ) g�oFwnrF9Q _vs � HGEHR Y STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out printed and submitted. The Required Items Checklist (Part IIQ must be printed, filled out and submitted along with all of the required information. 1. PROJECT INFORMATION 12 hr OK Project name Lot 164 Bellevue Terrace Contact name Kris Bass Phone number 919-960-1552 Date January 6, 2017 Drainage area number Sw Treatment Area II. DESIGN INFORMATION - 1 Site Characteristics Drainage area 550 ft2 Impervious area 550 ft2 Percent impervious 100.0% % Design rainfall depth 1.0 inch Peak Flow Calculations 12 hr OK Is pre/post control of the 1 -yr, 24 -hr peak flow required? N (Y or N) 1 -yr, 24 -hr runoff depth in 1 -yr, 24 -hr intensity in/hr Pre -development 1 -yr, 24 -hr peak flow ft' /sec Post -development 1 -yr, 24 -hr peak flow ft3/sec Pre/Post 1 -yr, 24 -hr peak control ft'/sec Storage Volume: Non -SA Waters Minimum volume required 45.6 ft' Volume provided 45.6 ft3 OK Storage Volume: SA Waters 1.5" runoff volume ft3 Pre -development 1 -yr, 24 -hr runoff ft3 Post -development 1 -yr, 24 -hr runoff ft3 Minimum volume required 0 ft3 Volume provided ft3 Cell Dimensions Ponding depth of water 9 inches OK Ponding depth of water 0.75 ft Surface area of the top of the bioretention cell 62.0 ft2 OK Length: ft Width: ft -or- Radius loft OK Media and Soils Summary Drawdown time, ponded volume 12 hr OK Drawdown time, to 24 inches below surface 24 hr OK Drawdown time, total: 36 hr In-situ soil: Soil permeability 0.40 in/hr Insufficient. Increase infiltration rate or include underdrains Planting media soil: Soil permeability in/hr Soil composition % Sand (by volume; % Fines (by volume Form SW401-Bioretention-Rev.8 June 25, 2010 Parts I and II. Design Summary, Page 1 of 3 % Organic (by volume) Total: 0% Phosphorus Index (P -Index) of media (unitless) Permit Number (to be provided by DWQ) Form SW401-Bioretention-Rev.8 June 25, 2010 Parts I and II. Design Summary, Page 2 of 3 Basin Elevations Temporary pool elevation Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting elevation (top of the mulch or grass sod layer) Depth of mulch Bottom of the planting media soil Planting media depth Depth of washed sand below planting media soil 262.00 fmsl (Y or N) Y (Y or N) OK media depth 261 fmsl 3 inches OK fmsl 261 ft ft Are underdrains being installed? N (Y or N) How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required SHWT elevation Distance from bottom to SHWT Internal Water Storage Zone (IWS) Does the design include IWS Elevation of the top of the upturned elbow Separation of IWS and Surface Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the bioretention cell? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP located at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a proposed drainage easement with access to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an "X' in the shaded cell) Gravel and grass (81inches gravel followed by 3-5 ft of grass) Grassed swate Forebay Other Permit Numi]er (to be provided by DWQ) Oft 0 fmsl _ fmsl 0 ft Insufficient distance to SHWT. N (Y or N) fmsl 261 ft 0 2 3 OK n (Y or N) Excess volume must bypass cell. y (Y or N) OK >Sn ft (Y or N) Y (Y or N) OK Y (Y or N) OK N (Y or N) Insufficient vegetated side slopes. N (Y or N) Insufficient ROW location. fVsec N (Y or N) OK (Y or N) Y (Y or N) OK Form SW401-Bioretention-Rev 8 June 25, 2010 Parts I and II. Design Summary, Page 3 of 3 Permit No: (to be assigned by DWQ) III. REQUIRED ITEMS CHECKLIST Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Pagel Plan -initials Sheet No. 5A �j uxvrVC�Pc Plans (1" - 50' or larger) of the entire site showing: Design at ultimate build -out, Off-site drainage (if applicable), Delineated drainage basins (include Rational C coefficient per basin), Cell dimensions, Pretreatment system, High flow bypass system, Maintenance access, Recorded drainage easement and public right of way (ROW), Clean out pipe locations, Overflow device, and Boundaries of drainage easement. 2. Plan details (1" = 30' or larger) for the bioretention cell showing: Cell dimensions Pretreatment system, High flow bypass system, Maintenance access, Recorded drainage easement and public right of way (ROW), Design at ultimate build -out, Off-site drainage (if applicable), Clean out pipe locations, Overflow device, and Boundaries of drainage easement. Indicate the P -Index between 10 and 30 lie 3. Section view of the bioretention cell (1" = 20' or larger) showing: 1.� Side slopes, 3:1 or lower Underdrain system (if applicable), and Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable), SHWT level(s), and overflow structure] 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The results of the soils report must be verified in the field by DWQ, by completing & submitting the soils Investigation request form. County soil maps are not an acceptable source of soils Information. All elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in situ soil must include: Soil permeability, Soil composition (% sand, %fines, %organic), and P -index. �5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing: C"& A variety of suitable species, S Sues, spacing and locations of plantings, �7 Total quantity of each type of plant specified, C� A planting detail, The source nursery for the plants, and t��xFertilizer and watering requirements to establish vegetation. fi. A construction sequence that shows how the bioretention cell will be protected from sediment until the '"3 j-tiV� entire drainage area is stabilized. ►'�� ,, 7. The supporting calculations (including underdrain calculations, if applicable). - 8. A copy of the signed and nolarized inspection and maintenance (I&M) agreement. IP 2 S 9. A copy of the deed restriction, kA Form SW401-Bioretention-Rev.7 Part III, Page 1 of 1 Permit Number: (to be provided by DWQ) NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. 1. PROJECT INFORMATION Project name Lot 164 Bellevue Terrace Contact name Kris Bass Phone number 919-960-1552 Date January 6, 2017 Drainage area number Lower Terrace Treatment Area II. DESIGN INFORMATION Site Characteristics Drainage area 1,000 ft2 Impervious area 1,000 ft2 Percent impervious 100.0% % Design rainfall depth 1.0 inch Peak Flow Calculations Is pre/post control of the 1 -yr, 24 -hr peak flow required? N (Y or N) 1 -yr, 24 -hr runoff depth in 1 -yr, 24 -hr intensity in/hr Pre -development 1 -yr, 24 -hr peak flow ft'/sec Post -development 1 -yr, 24 -hr peak flow ft3/sec Pre/Post 1 -yr, 24 -hr peak control ft3/sec Storage Volume: Non -SA Waters in/hr Minimum volume required 83.3 ft' Volume provided 83.3 ft' OK Storage Volume: SA Waters 1.5" runoff volume ft3 Pre -development 1 -yr, 24 -hr runoff ft3 Post -development 1 -yr, 24 -hr runoff ft3 Minimum volume required 0 ft3 Volume provided ft3 Cell Dimensions Ponding depth of water 9 inches OK Ponding depth of water 0.75 ft Surface area of the top of the bioretention cell 112.0 ft2 OK Length: ft Width: ft -or- Radius 10 ft OK Media and Soils Summary Drawdown time, ponded volume 12 hr OK Drawdown time, to 24 inches below surface 24 hr OK Drawdown time, total: 36 hr In-situ soil: Soil permeability 0.40 Whir Insufficient. Increase infiltration rate or include underdrains. Planting media soil: Soil permeability in/hr Soil composition % Sand (by volume) % Fines (by volume) Form SW401-Bioretention-Rev 8 June 25, 2010 Parts I and 11. Design Summary, Page 1 of 3 % Organic (by volume) Total: 0% Phosphorus Index (P -Index) of media (unitless) Permit Number (to be provided by DWQ) Form SW401-Bioretention-Rev.8 June 25, 2010 Parts I and II. Design Summary, Page 2 of 3 Basin Elevations Temporary pool elevation Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting elevation (top of the mulch or grass sod layer) Depth of mulch Bottom of the planting media soil Planting media depth Depth of washed sand below planting media soil 268.00 fmsl (Y or N) Y (Y or N) OK media depth 267 fmsl 3 inches OK fmsl 267 ft ft Are underdrains being installed? N (Y or N) How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required SHWT elevation Distance from bottom to SHWT Internal Water Storage Zone (IWS) Does the design include IWS Elevation of the top of the upturned elbow Separation of IWS and Surface Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the bioretention cell? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP located at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a proposed drainage easement with access to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (Binches gravel followed by 3-5 ft of grass) Grassed swale Forebay Other Permit Nurnbr_r _ (to be provided by DWQ) Oft 0 fmsl fmsl 0 ft Insufficient distance to SHWT. N (Y or N) fmsl 267 ft 0 2 3 OK n (Y or N) Excess volume must bypass cell. y (Y or N) OK >50 ft (Y or N) Y (Y or N) OK Y (Y or N) OK N (Y or N) Insufficient vegetated side slopes. N (Y or N) Insufficient ROW location. ft/sec N (Y or N) OK r (Y or N) OK Y (Y or N) OK Form SW401-Bioretention-Rev S June 25, 2010 Parts I and 11 Design Summary, Page 3 of 3 ill. REQUIRED ITEMS CHECKLIST (to be assigned by OWQ) Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Pagel Plan nftials Sheet No. fl fi let S C 4 �� 5. A construction sequence that shows how the bioretention cell will be protected from sediment until the entire drainage area is stabilized. 7 7, The supporting calculations (including underdrain calculations, if applicable). 8. A copy of the signed and notarized inspection and maintenance (I&M) agreement. X7 9 C 9. A copy of the deed restriction. Plans (1" - 50' or larger) of the entire site showing: Design at ultimate build -out, Off-site drainage (if applicable), Delineated drainage basins (include Rational C coefficient per basin), Cell dimensions, Pretreatment system, High flow bypass system, Maintenance access, Recorded drainage easement and public right of way (ROW), Clean out pipe locations, Overflow device, and - Boundaries of drainage easement. 2. Plan details (1" = 30' or larger) for the bioretention cell showing: - Cell dimensions Pretreatment system, High flow bypass system, Maintenance access, Recorded drainage easement and public right of way (ROW), Design at ultimate build -out, Off-site drainage (if applicable), Clean out pipe locations, Overflow device, and Boundaries of drainage easement. Indicate the P -Index between 10 and 30 3. Section view of the bioretention cell (1" = 20' or larger) showing: - Side slopes, 3:1 or lower Underdrain system (if applicable), and Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable), SHWT level(s), and overflow structure] 4. A soils report that is based upon an actual field investigalon, soll borings, and infillration tests, The results of the soils report must be verified in the field by DWQ, by completing & submitting the soils investigation request form. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsi). Results of soils tests of both the planting soil and the in situ soil must include: - Soil permeability, Soil composition (% sand, %fines, %organic), and P -index. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing: A variety of suitable species, Sizes, spacing and locations of plantings, Total quantity of each type of plant specified, -A planting detail, The source nursery for the plants, and Fertilizer and watering requirements to establish vegetation. Form SW401-Bioretention-Rev,7 Part III, Page 1 of 1 Permit Number. (to be provided by DWQ) o`'o� w rbc Y � r HCDENR Y STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part ill) must be printed, filled out and submitted along with all of the required information. I. PROJECT INFORMATION Project name Lot 164 Bellevue Terrace Contact name Kris Bass Phone number 919-960-1552 Date January 6, 2017 Drainage area number Upper Terrace Treatment Area II. DESIGN INFORMATION Site Characteristics Drainage area 1.100 ft2 Impervious area 1,100 ft2 Percent impervious 100.0% % Design rainfall depth 1.0 inch Peak Flow Calculations Is pre/post control of the 1 -yr, 24 -hr peak flow required? 1 -yr, 24 -hr runoff depth 1 -yr, 24 -hr intensity Pre -development 1 -yr, 24 -hr peak flow Post -development 1 -yr, 24 -hr peak flow Pre/Post 1 -yr, 24 -hr peak control Storage Volume: Non -SA Waters Minimum volume required Volume provided Storage Volume: SA Waters 1.5" runoff volume Pre -development 1 -yr, 24 -hr runoff Post -development 1 -yr, 24 -hr runoff Minimum volume required Volume provided Cell Dimensions Ponding depth of water Ponding depth of water Surface area of the top of the bioretention cell Length: Width: -or- Radius Media and Soils Summary Drawdown time, ponded volume Drawdown time, to 24 inches below surface Drawdown time, total: In-situ soil: Soil permeability Planting media soil.: Soil permeability Soil composition % Sand (by volume) % Fines (by volume) Form SW401-Bioretention-Rev 6 June 25, 2010 N (Y or N) In in/hr ft3 /sec ft3/sec ft3/sec 91.7 ft3 91.7 ft3 OK ft3 W ft3 0 ft3 —ft3 9 inches OK I rollbir, 123.0 ft2 OK �ft 'ft 10 ft OK 12 hr OK 24 hr OK 36 hr 0 40 in/hr Insufficient. Increase infiltration rate or Include underdrains. in/hr Parts I and II Design Summary, Page 1 of 3 % Organic (by volume) Total: 0% Phosphorus Index (P -Index) of media (unitless) Permit Number. (to be provided by DWQ) Form SW401-Bioretention-Rev.8 June 25, 2010 Parts I and 11 Design Summary, Page 2 of 3 Basin Elevations Temporary pool elevation Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting elevation (top of the mulch or grass sod layer) Depth of mulch Bottom of the planting media soil Planting media depth Depth of washed sand below planting media soil 272.00 fmsl (Y or N) Y (Y or N) OK media depth 271 fmsl 3 inches OK fmsl 271 ft ft Are underdrains being installed? N (Y or N) How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required SHWT elevation Distance from bottom to SHWT Internal Water Storage Zone (IWS) Does the design include IWS Elevation of the top of the upturned elbow Separation of IWS and Surface Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the bioretention cell? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP localed at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a proposed drainage easement with access to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (Sinches gravel followed by 3-5 ft of grass) Grassed swale Forebay Other Permit Number: (to be provided by DWQ) Oft 0 fmsl _ fmsl 0 ft Insufficient distance to SHWT. N (Y or N) fmsl 271 ft 0 2 3 OK n (Y or N) Excess volume must bypass cell. y (Y or N) OK >Sn ft (Y or N) Y (Y or N) OK Y (Y or N) OK N (Y or N) Insufficient vegetated side slopes. N (Y or N) Insufficient ROW location. ft/sec N (Y or N) OK n (Y or N) OK Y (Y or N) OK Form SW401-Bioretention-Rev 6 June 25. 2010 Parts I and 11 Design Summary, Page 3 of 3 (to be assigned by DWQ) lit. REQUIRE€? ITEMS CHECKLIST Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Pagel Plan ntials Sheet No. 5k&C_1. Plans (1" - 50' or larger) of the entire site showing: Design at ultimate build -out, 1 Off-site drainage (if applicable), Delineated drainage basins (include Rational C coefficient per basin), Cell dimensions, Pretreatment system, High flow bypass system, Maintenance access, Recorded drainage easement and public right of way (ROW), Clean out pipe locations, Overflow device, and Boundaries of drainage easement. 2. Plan details (1" = 30' or larger) for the bioretention cell showing: j Cell dimensions Pretreatment system, High flow bypass system, Maintenance access, Recorded drainage easement and public right of way (ROW), C -t Design at ultimate build -out, S Off-site drainage (if applicable), Clean out pipe locations, Overflow device, and Boundaries of drainage easement. -Indicate the P -Index between 10 and 30 3. Section view of the bioretention cell (1" = 20' or larger) showing: Side slopes, 3:1 or lower Underdrain system (if applicable), and Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable), SHWT level(s), and overflow structure] 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The results of the soils report must be verified in the field by DWQ, by completing & submitting the soils Investigation request form. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in situ soil must include: ,$ Soil permeability, Soil composition (% sand, %fines, %organic), and P -index. Yr �o 5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing: C' -A variety of suitable species, Sues, spacing and locations of plantings, ^^ll - Total quantity of each type of plant specified, -A planting detail, - The source nursery for the plants, and Fedllzer and watering requirements to establish vegetation. 6. A construction sequence that shows how the bioretention cell will be protected from sediment until the entire drainage area Is stabfllxed. �I �t�ttf 7. The supporting calculations (including underdrain calculations, if applicable). - 8. A copy of the signed and notarized inspection and maintenance (I&M) agreement. ds 9. A copy of the deed restriction, t Form SW401-Bioretention-Rev.7 Part III, Page 1 of 1 Permit Number: (to be provided by DWQ) Drainage Area Number: 5 -PA Cls Q, Bioretention Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Important operation and maintenance procedures: Immediately after the bioretention cell is established, the plants will be watered twice weekly if needed until the plants become established (commonly six weeks). — Snow, mulch or any other material will NEVER be piled on the surface of the bioretention cell. — Heavy equipment will NEVER be driven over the bioretention cell. — Special care will be taken to prevent sediment from entering the bioretention cell. — Once a year, a soil test of the soil media will be conducted. After the bioretention cell is established, I will inspect it once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblems: j How I will remediate theproblem: The entire BMP Trash/ debris is present. Remove the trash/ debris. The perimeter of the Areas of bare soil and/ or Regrade the soil if necessary to bioretention cell erosive gullies have formed, remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer a2phcation. The inlet device: pipe, The pipe is clogged (if Unclog the pipe. Dispose of the stone verge or swale applicable). sediment off-site. The pipe is cracked or Replace the pipe. otherwise damaged (if a plicable). Erosion is occurring in the Regrade the swale if necessary to swale (if applicable), smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future roblems with erosion. Stone verge is clogged or Remove sediment and clogged covered in sediment (if stone and replace with clean stone. applicable). Form SW401-Bioretention 0&M-Rev.3 Page 1 of 4 BMP element: Potentialproblems: How. I will remediate theproblem: The pretreatment area Flow is bypassing Regrade if necessary to route all pretreatment area and/ or flow to the pretreatment area. gullies have formed. Restabilize the area after grading. Sediment has accumulated to Search for the source of the a depth greater than three sediment and remedy the problem if inches. possible. Remove the sediment and restabilize the pretreatment area. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. The bioretention cell: Best professional practices Prune according to best professional vegetation show that prur ing is needed practices. to maintain optimal plant health. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Tree stakes/ wires are present Remove tree stake/ wires (which six months after planting. can kill the tree if not removed). The bioretention cell: Mulch is breaking down or Spot mulch if there are only random soils and mulch has floated away. void areas. Replace whole mulch layer if necessary. Remove the remaining much and replace with triple shredded hard wood mulch at a maximum depth of three inches. Soils and/ or mulch are Determine the extent of the clogging clogged with sediment. - remove and replace either just the top layers or the entire media as needed. Dispose of the spoil in an appropriate off-site location. Use triple shredded hard wood mulch at a maximum depth of three inches. Search for the source of the sediment and remedy the problem if possible. An annual soil test shows that Dolomitic lime shall be applied as pH has dropped or heavy recommended per the soil test and metals have accumulated in toxic soils shall be removed, the soil media. disposed of properly and replaced with new planting media. Form SW401-Bioretention O&M-Rev.3 Page 2 of 4 BNII' element: Potential roblems: How I will remediate theproblem: The underdrain system Clogging has occurred. Wash out the underdrain system. (if applicable) The drop inlet Clogging has occurred. Clean out the drop inlet. Dispose of the sediment off-site. The drop inlet is damaged Repair or replace the droj2 inlet. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the outlet. Quality 401 Oversight Unit at 919 - j 733-1786. Form SW401-Bioretention O&M-Rev.3 Page 3 of 4 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible parry. Project name: " + t ) 1 I�Yt,I 11itC d BMP drainage area number: 50 T Printname: Teaque & Skelton, Inc. Title: Charles W Teague, Jr_, Pr _gz knt- Address: 1313 Enderbury Drive, Raleigh, NQZth Carolina 27614 Phone: Signat Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. day of December , r a Notary Public for the State of . do hereby certify that )ersonally appeared before me this. 2 o- 2 016 , and acknowledge the due execution of the forgoing bioretention maintenance requirements. Witness my hand and official seal, N0 TA sem, x hey Comm Expii ' M 4 res May , 2019 AUBLIG "1COUNI,• 111111110"ti SEAL My commission expires 4, z-6) q Form SW401-Bioretention I&M-Rev. 2 Page 4 of 4 r NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary November 9, 2009 DWQ Project # 2009-1161 County: Wake Teague & Skelton Inc Attn: Mr. Charles W. Teague 8368 Six Forks Road Suite 204 Raleigh, NC 27615 Subject Property: Belleview Terrace Lot 164, Raleigh, NC UT to Crabtree Creek [030402, 27-33-(10), C, NSW AFTER -THE -FACT AUTHORIZATION of Neuse River Buffer Rule (15A NCAC 02B.0233) Authorization Certificate Dear Mr. Teague: You have our after -the -fact authorization, in accordance with 15A NCAC 02B .0233 and any conditions listed below, to impact approximately 0 ft2 of Zone 1 and 38 ft2 of Zone 2 of the protected riparian buffers for the purpose of constructing the deck at the subject property as described within your application dated October 26, 2009, received by the Division of Water Quality (DWQ) on November 2, 2009. In addition; you should obtain or otherwise comply with any other required federal, state or local permits before you go ahead with your project including (but not limited to) Erosion and Sediment Control, Non -discharge regulations. This authorization certification is for the purpose and design that you described in your application. If you change your project, you must notify us and you may be required to send us a new application. If the property is sold, the new owner must be given a copy of this authorization letter and is thereby responsible for complying with all conditions. This authorization requires you to follow the conditions listed below. The Additional Conditions of the Certification are: 1. Impacts Approved The following impacts are hereby approved as long as all of the other specific and general conditions of this Certification (or Isolated Wetland Permit) are met. No other impacts are approved including incidental impacts: Amount Approved nits) Plan Location or Reference Zone 1 Buffers 0 (square ft.) A2plication Zone 2 Buffers 38 square ft.) Application 2. Erosion & Sediment Control Practices 401 Oversight/Express Review Permitting Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 Location: 2321 Crabtree Blvd., Raleigh, North Carolina 27604 Phone: 919-733.17861 FAX: 919-733893 Intemet: http:A2o.enr.state.nc.us)ncwetandsl An Equal Opportunity 1 Affirmative Acton Employer NO�1thCarohna Teague and Skelton, Inc Page 2 of 3 November 5, 2009 Erosion and sediment control practices must be in full compliance with all specifications governing the proper design, installation and operation and maintenance of such Best Management Practices in order to protect surface waters standards: a. The erosion and sediment control measures for the project must be designed, installed, operated, and maintained in accordance with the most recent version of the North Carolina Sediment and Erosion Control Planning and Design Manual. b. The design, installation, operation, and maintenance of the sediment and erosion control measures must be such that they equal, or exceed, the requirements specified in the most recent version of the North Carolina Sediment and Erosion Control Manual. The devices shall be maintained on all construction sites, borrow sites, and waste pile (spoil) projects, including contractor -owned or leased borrow pits associated with the project. c. For borrow pit sites, the erosion and sediment control measures must be designed, installed, operated, and maintained in accordance With the most recent version of the North Carolina Surface Mining Manual. d. The reclamation measures and implementation must comply with the reclamation in accordance with the requirements of the Sedimentation Pollution Control Act. 3. No Waste, Spoil, Solids, or Fill of Any Kind No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the.footprint of the impacts depicted in the Pre -Construction Notification. All construction activities, including the design, installation, operation, and maintenance of sediment and erosion control Best Management Practices, shall be performed so that no violations of state water quality standards, statutes, or rules occur. 4. No Sediment & Erosion Control Measures w/n Wetlands or Waters Sediment and erosion control measures shall not be placed in wetlands or waters without prior approval by the Division. If placement of sediment and erosion control devices in wetlands and waters is unavoidable, design and placement of temporary erosion control measures shall not be conducted in a manner that may result in dis-equilibrium of wetlands or stream beds or banks, adjacent to or upstream and down stream of the above structures. All sediment and erosion control devices shall be removed and the natural grade restored within two (2) months of the date that the Division of Land Resources or locally delegated program has released the project. 5. Diffuse Flow An additional condition is that all stormwater shall be directed as diffuse flow at non-erosive velocities through the protected stream buffers and will not re -concentrate before discharging into the stream as identified within 15A NCAC 2B .0233(5). 6. Protective Fencing The outside buffer, wetland or water boundary and along the construction corridor within these boundaries approved under this authorization shall be clearly marked with orange warning fencing (or similar high visibility material) for the areas that have been approved to infringe within the buffer, wetland or water prior to any land disturbing activities to ensure compliance with 15A NCAC 2B .0233. 7, Certificate of Completion Teague and Skelton, Inc Page 3 of 3 November 5, 2009 Upon completion of all work approved within this authorization, and any subsequent modifications, the applicant is required to return the attached certificate of completion to the 401 Oversight/Express Review Permitting Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650, 8. Deed Notifications Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands, waters and protective buffers in order to assure compliance for future wetland, water and buffer impact. These mechanisms shall be put in place at the time of recording of the property, or of individual lots, whichever is appropriate. A sample deed notification can be downloaded from the 401/Wetlands Unit web site at: http://h2o.enr.state.nc.us/ncwetlands. The text of the sample deed notification may be modified as appropriate to suit to this project. Any disputes over determinations regarding this Authorization (associated with the approved buffer impacts) shall be referred in writing to the Director for a decision. The Director's decision is subject to review as provided in Articles 3 and 4 of G.S, 150B. This Authorization shall expire five (5) years from the date of this letter. This letter completes the review of the "No Practical Alternatives" determination under 15A NCAC 2B .0233. If you have any questions or would like a copy of the buffer rules, please call Amy Chapman or Cyndi Karoly at (919) 733-1786. This letter does not authorize any impacts to either Waters of the United States or Waters of the State. Please contact the US Army Corps of Engineers (USACE) or NC Division of Water Quality (DWQ) if any impacts are proposed to either of theme waters. no CHS/ijm/asc Enclosures: Certificate of Completion Coleen H. Sullins cc: Lauren Witherspoon, DWQ Raleigh Regional Office DLR Raleigh Regional Office Jennifer Burdette, Burdette Land Consulting, Inc, 10212 Creedmoor Rd, Raleigh, NC 27615 File Copy Filename: 091161BeIIeviewLod 64(Wake)NBR