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1_WQC-Homewood-Jordan Buffer Variance documents
VARIANCE PERMIT APPLICATION INFORMATION This document is a public record under the North Carolina Public Records Act and may be published on the Town’s website or disclosed to third parties. Application #: Submittal Date: Fee Paid $ Check # Last Updated: July 1, 2021 APPLICANT INFORMATION Applicant Name(s): Address: City: State: Zip: Phone: Fax: E-mail Address: OWNER INFORMATION Owner Name(s): Address: City: State: Zip: Phone: Fax: E-mail Address: PROPERTY INFORMATION: Address/Location: Property PIN: Acreage: Zoning: Town Limits: Inside corporate limits In ETJ Outside corporate limits and ETJ Other contacts: 2 of 6 Variance Permit Application VARIANCE PERMIT APPLICATION INFORMATION This document is a public record under the North Carolina Public Records Act and may be published on the Town’s website or disclosed to third parties. Application #: Submittal Date: Last Updated: July 1, 2021 TO THE APEX BOARD OF ADJUSTMENT: I, , hereby petition the Apex Board of Adjustment for a Variance Permit from the literal provisions of the Unified Development Ordinance (UDO) because, under the interpretation given to me by the Director of Planning and Community Development, I am prohibited from using the parcel of land described in this application in a manner shown by the plot/site plan attached to this form. I request a Variance Permit from the following provisions of the Unified Development Ordinance (cite the paragraph numbers): so that the above-mentioned property can be used in a manner indicated by the plot/site plan attached to this form or if the plot/site plan does not adequately reveal the nature of the variance permit, as more fully described herein: FACTORS RELEVANT TO THE ISSUANCE OF A VARIANCE PERMIT The Apex Board of Adjustment does not have unlimited discretion in deciding whether to grant a variance permit. In order to approve an application for a variance permit, the Board of Adjustment shall find the following: • Unnecessary Hardship. Unnecessary hardship would result from the strict application of the Ordinance. It shall not be necessary to demonstrate that, in the absence of a Variance Permit, no reasonable use can be made of the property. • Hardship Results from Peculiar Conditions. The hardship results from conditions that are peculiar to the property, such as location, size, or topography. Hardships resulting from personal circumstances, as well as hardships resulting from conditions that are common to the neighborhood or the general public, may not be the basis for granting a variance. A variance may be granted when necessary and appropriate to make a reasonable accommodation under the Federal Fair Housing Act for a person with a disability. • Not Result of Action by Applicant. The hardship did not result from actions taken by the applicant or the property owner. The act of purchasing property with knowledge that circumstances exist that may justify the granting of a Variance Permit shall not be regarded as a self-created hardship. • Consistency with the UDO. The requested variance permit is consistent with the spirit, purpose, and intent of the Ordinance, such that public safety is secured, and substantial justice is achieved. 4 of 6 Variance Permit Application March 31, 2022 Ms. Jeri Pederson Planning Technician Apex 73 Hunter Street Apex, North Carolina 27502 Reference: No Practical Alternatives Determination/Riparian Buffer Pines at Wake Crossing Parlier Drive Apex, Wake County, North Carolina ECS Project No. 49:14384 Ms. Pederson, Please find the attached Riparian Buffer, No Practical Alternatives Determination Application for the Pines at Wake Crossing Site. The subject of this application is located on Parlier Drive at the Clark Branch crossing. The site is identified by the Wake County Parcel Identification Numbers (PINs) as 0733133605 and 0733049008 The attached application includes the following support documentation: • No Practical Alternatives Determination Application • Parlier Crossing – Impact Plans • U.S. Army Corps approved NWP 12 and 14, dated 1/12/2010 • FEMA Correspondence regard Violation Case #17-04-7608P, dated 12/21/2020 • Meeting Minutes, Apex, FEMA, Toll Brother, U.S. Corps of Engineers, ESE Consultants, ECS Southeast, dated 11/29/2021 The following information describes the overall project, project purpose, alternatives and impact avoidance/minimization and is included in the No Practical Alternatives Determination Application document. Project Purpose The purpose of the project is to provide corrective action to address the FEMA floodplain violation (Case #17-04-7608-P) associated with the culvert construction. The corrective action involves the removal of approximately 1,200 cy from the floodplain. The excavation will lower the base flood elevation rise created by the previously constructed road crossing over Clark Branch. Project Description The excavation of 1,200 cy will result in the temporary disturbance to approximately 0.17 acre of forested wetland. Following the excavation activities, the disturbed area will be graded to create a 2 reasonably smooth and uniform surface and reseeded with the NC Piedmont Riparian Mix (Ernst Seed Mix – ERNMX-307). Refer to Sheet 3 of 6 for details regarding site stabilization and revegetation following excavation activities. The construction of the project will not necessitate the use of any specialized construction techniques. Standard construction equipment such as cranes, excavators, dump trucks, and similar vehicles would be used for the project. Proper erosion and sedimentation control measures would be employed throughout the project. Typical materials and machinery will be used on-site during the construction process. Refer to Sheets 5 and 6 for details regarding grading, soil erosion and sediment control measures. Project Alternatives Two other alternatives were considered that would minimize/avoid temporary impacts to the wetlands and riparian buffer while addressing the FEMA floodplain violation. 1. Remove Culvert: Removing the existing road crossing would decrease crossing of Clark Branch, create two public roadway dead-ends which would not accommodate first responder vehicle turn arounds, require re-laying the existing public water main under the stream, re-laying the existing public power and other dry utilities under the stream and would cut off the stormwater detention basin facility on the northwest side of Parlier Drive from the stormwater management piping on the south side of Parlier Drive. Due to elevation changes, the storm pipe cannot be re-laid under the stream and as a result stormwater would not reach the detention basin for the required treatment prior to discharge to Clark Branch. Therefore, for safety reasons, loss of stormwater treatment and extensive re-laying of existing utilities, this alternative was not considered a viable option. 2. Add Culvert: In order to restrict the rise between the Corrective Effective 100-year Water Surface Elevation (WSEL) versus the final constructed 100-year WSEL to approximately 1.0-ft upstream of the culvert, the existing passage would need to be almost doubled with the addition of a 10 ft width X 5 ft height concrete box culvert. This additional box culvert would be approximately 110 LF with 20 ft long concrete headwalls upstream and downstream. The culvert invert would be approximately 20 feet below the road surface and would require significant trenching and temporary blockage to the roadway. The culvert would need to cross under existing operating storm pipe, water main and other dry utilities such as electrical and cable. Installation of the added culvert to avoid excavation within the wetland and riparian buffer would not be a viable option for remediating the floodplain impacts while avoiding the temporary wetland/riparian impacts and would result in a additional streambed disturbance. Minimization of Impacts through Construction Techniques The construction techniques shall be conducted in accordance with NCDENR standards. Temporary and additional erosion control measures shall be maintained throughout the construction process. Silt fencing will be placed at the bottom of the slopes to deter sediment and control erosion during excavation activities. Temporary erosion, sedimentation, and pollution controls will be installed prior to and maintained during the entire construction duration and until final stabilization is established. 3 Closing ECS looks forward to your attention to this request. Please contact the undersigned at your earliest convenience with questions or if additional information is required. Sincerely, Michelle Measday, PWS W. Brandon Fulton, LSS, PSC, PWS Environmental Senior Project Manager Environmental Principal mmeasday@ecslimited.com bfulton@ecslimited.com (919)-441-2437 (704) 525-5152 Applicant is (check one): Name of Project: Project Location: Request for a "No Practical Alternatives" Determination CONTACT INFORMATION Owner Information Agent / Consultant Information (if applicable) Applicant Information (if different from Owner) □ Agent □ Other, specify: E-mail address: Telephone Number: City, State, ZIP: Street address: Responsible Party (LLC if applicable): Deed Book and Page No.: Business name (if applicable): Name: Name(s) on Recorded Deed: Telephone Number: E-mail address: Telephone Number: E-mail address: Street address: City, State, ZIP: Street address: City, State, ZIP: Business name (if applicable): Name: Town of Apex Request for a NPA Page 1 of 4 Last updated: 8/7/2019 Property ID / PIN:Property size (acres): River basin: Jordan Lake watershed: PROJECT INFORMATION Watershed Data □ Neuse □ Cape Fear □ Yes □ No □ Primary □ SecondaryWatershed Protection Overlay District: Nearest body of water: Have permits or certifications been obtained for this project (including all prior phases) in the past? □ Yes □ No □ Unknown If yes, explain: Project History Project Description If yes, list the dates of the USACE jurisdictional determinations or DEQ or Town determinations and attach documentation: Have jurisdictional wetland or stream determinations by the USACE, DEQ, or the Town been obtained for this property? □ Yes □ No □ Unknown If yes, who delineated the jurisdictional areas? Name (if known): □ Agency □ Consultant □ Other: Jurisdictional Determinations Describe the existing conditions and land use in the vicinity of the project: List the total estimated linear footage of all existing streams (intermittent and perennial) on the property: Explain the project purpose and describe construction techniques to be used (including type of equipment): Town of Apex Request for a NPA Page 2 of 4 Last updated: 8/7/2019 Reason for impact Mitigation required? Zone 1 impact (ft2) Zone 2 impact (ft2) Zone 3 impact (ft2) □ Yes □ No □ Yes □ No □ Yes □ No □ Yes □ No □ Yes □ No □ Yes □ No □ Yes □ No □ Yes □ No □ Yes □ No □ Yes □ No □ Yes □ No □ Yes □ No BUFFER IMPACTS Impacts Summary Please list all buffer impacts as a line item below. (If any impacts require mitigation, then the Mitigation section of this application must be submitted.) Mapping Call out the total area (SF) of each impact by zone. Include shading of impact areas by zone (provide a legend for clarity). Attach a map of each individual impact: Attach an overall map: □ Neuse □ Jordan Lake □ Town of ApexBuffers impacted (check all that apply): Stream name Calling out each individual buffer impact listed in the table above. Showing the extent of the project and all riparian buffers on site. Total buffer impact: Town of Apex Request for a NPA Page 3 of 4 Last updated: 8/7/2019 Name:Title: Signature: Date: Explanation & Justification Prove that the basic project purpose cannot be practically accomplished in a way that would better minimize buffer impacts than what is currently designed. Prove that the impacts shown cannot practically be reduced in area, reconfigured, or redesigned to better minimize disturbance. BUFFER IMPACTS State the practices that will be used to minimize disturbance, preserve aquatic life and habitat, and protect water quality. Certification By my signature below, I (as the applicant) attest that the information provided is accurate and meets all criteria as specified in the Town of Apex UDO. Town of Apex Request for a NPA Page 4 of 4 Last updated: 8/7/2019 EXIST. TOP OF BANK (TYP.) 50 . 0 0 ' 20 . 0 0 ' 30 . 0 0 ' ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R 30 . 0 0 ' 20. 0 0 ' 50 . 0 0 ' PA R L I E R D R I V E 30 . 0 0 ' 20 . 0 0 ' 50 . 0 0 ' 134 133 129 128 127 126 125 EXIST. WETLAND (TYP.) EXIST. STREAM(1,285 LF ON PROPERTY) ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: BU F F E R I M P A C T E X H I B I T PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 40'1/21/22 KNBBMM 2202 62 NOT FOR CONSTRUCTION BUFFER IMPACT AREA ZONE 1 9,022 SF 0.21 AC 280 LF ZONE 2 5,088 SF 0.12 AC 270 LF ZONE 3 8,928 SF 0.20 AC 240 LF NORTH N GRAPHIC SCALE 40'0 1" = 40' 40'20' © 2022 Microsoft Corporation © 2022 Maxar ©CNES (2022) Distribution Airbus DS EXIST. TOP OF BANK (TYP.) 50 . 0 0 ' 20 . 0 0 ' 30 . 0 0 ' ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R 30 . 0 0 ' 20. 0 0 ' 50 . 0 0 ' PA R L I E R D R I V E 30 . 0 0 ' 20 . 0 0 ' 50 . 0 0 ' 134 133 129 128 127 126 125 EXIST. WETLAND (TYP.) EXIST. STREAM(1,285 LF ON PROPERTY) ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: EX I S T I N G C O N D I T I O N S P L A N PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 40'1/21/22 KNBBMM 2202 61 NOT FOR CONSTRUCTION NORTH N GRAPHIC SCALE 40'0 1" = 40' 40'20' EXIST. TOP OF BANK (TYP.) 50 . 0 0 ' 20 . 0 0 ' 30 . 0 0 ' ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R 30 . 0 0 ' 20. 0 0 ' 50 . 0 0 ' PA R L I E R D R I V E 30 . 0 0 ' 20 . 0 0 ' 50 . 0 0 ' 134 133 129 128 127 126 125 EXIST. WETLAND (TYP.) EXIST. STREAM(1,285 LF ON PROPERTY) ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: BU F F E R I M P A C T E X H I B I T PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 40'1/21/22 KNBBMM 2202 62 NOT FOR CONSTRUCTION BUFFER IMPACT AREA ZONE 1 9,022 SF 0.21 AC 280 LF ZONE 2 5,088 SF 0.12 AC 270 LF ZONE 3 8,928 SF 0.20 AC 240 LF NORTH N GRAPHIC SCALE 40'0 1" = 40' 40'20' EXIST. TOP OF BANK (TYP.) 50 . 0 0 ' 20 . 0 0 ' 30 . 0 0 ' ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R 30 . 0 0 ' 20. 0 0 ' 50 . 0 0 ' PA R L I E R D R I V E 30 . 0 0 ' 20 . 0 0 ' 50 . 0 0 ' 134 133 129 128 127 126 125 EXIST. WETLAND (TYP.) EXIST. STREAM(1,285 LF ON PROPERTY) ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: WE T L A N D I M P A C T E X H I B I T PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 40'1/21/22 KNBBMM 2202 63 NOT FOR CONSTRUCTION NORTH N GRAPHIC SCALE 40'0 1" = 40' 40'20' WETLAND IMPACT AREA 7,691 SF 0.18 AC NOT FOR CONSTRUCTION ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: RE V E G E T A T I O N P L A N PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 50'1/21/22 KNBBMM 2202 64 FLOODPLAIN SEED MIX NC PIEDMONT RIPARIAN MIX ERNST SEED MIX - ERNMX-307 (OR APPROVED EQUAL) Mix Composition 29.9% Sorghastrum nutans, 'Scout' (Indiangrass, ‘Scout’) 20.0% Elymus virginicus, PA Ecotype (Virginia Wildrye, PA Ecotype) 20.0% Panicum virgatum, 'Carthage', NC Ecotype (Switchgrass, ‘Carthage’, NC Ecotype) 10.0% Panicum anceps, Eastern Shore MD Ecotype (Beaked Panicgrass, Eastern Shore MD Ecotype) 5.0% Chasmanthium latifolium, WV Ecotype (River Oats, WV Ecotype) 5.0% Panicum rigidulum, Coastal Plain NC Ecotype (Redtop Panicgrass, Coastal Plain NC Ecotype) 3.0% Chamaecrista fasciculata, FL Ecotype (Partridge Pea, FL Ecotype) 2.0% Carex vulpinoidea, PA Ecotype (Fox Sedge, PA Ecotype) 2.0% Coreopsis lanceolata (Lanceleaf Coreopsis) 2.0% Rudbeckia hirta (Blackeyed Susan) 0.5% Juncus effusus, Coastal Plain NC Ecotype (Soft Rush, Coastal Plain NC Ecotype) 0.4% Vernonia noveboracensis, PA Ecotype (New York Ironweed, PA Ecotype) 0.2% Helenium autumnale, NJ Ecotype (Common Sneezeweed, NJ Ecotype) SEEDING RATE: 20 LB PER ACRE (WITH GRAIN RYE COVER CROP AT 30 LBS PER ACRE SEPTEMBER 1 TO APRIL 31). REQUIRED GROUND STABILIZATION TIMEFRAMES SITE AREA DESCRIPTION TIMEFRAME VARIATIONS -7 DAYS FOR PERIMETER DIKES, SWALES, DITCHES, PERIMETER SLOPES AND HQW ZONES -10 DAYS FOR FALLS LAKE WATERSHED UNLESS THERE IS ZERO SLOPE STABILIZE WITHIN THIS MANY CALENDAR DAYS AFTER CEASING LAND DISTURBANCE 7 14 None (a)PERIMETER DIKES, SWALES, DITCHES, AND PERIMETER SLOPES (b)HIGH QUALITY WATER (HQW) ZONES (c)SLOPES STEEPER THAN 3:1 IF SLOPES ARE 10' OR LESS IN LENGTH AND ARE NOT STEEPER THAN 2:1, 14 DAYS ARE ALLOWED (d)SLOPES 3:1 TO 4:1 (e)AREAS WITH SLOPES FLATTER THAN 4:1 -7 DAYS FOR SLOPES GREATER THAN 50' IN LENGTH AND WITH SLOPES STEEPER THAN 4:1 -7 DAYS FOR PERIMETER DIKES, SWALES, DITCHES, PERIMETER SLOPES AND HQW ZONES -10 DAYS FOR FALLS LAKE WATERSHED 7 None 7 14 ALL DISTURBED AREAS OUTSIDE OF THE FLOODPLAIN SHALL USE THE NCDEQ STANDARD PERMANENT SEED MIX: PERMANENT SEEDING NOTES SEEDING SCHEDULE PERMANENT SEEDING DATE TYPE PLANTING RATE MAR. 1 - AUG. 31 WATER STAR TALL FESCUE 20 LB/ACRE SARAH BERMUDA UNHULLED 50 LB/ACRE PENSACOLA BAHAIGRASS 25 LB/ACRE DURANA CLOVER 10 LB/ACRE RYEGRAIN 10 LB/ACRE SEP. 1 - FEB. 28 WATER STAR TALL FESCUE 50 LB/ACRE SARAH BERMUDA UNHULLED 20 LB/ACRE PENSACOLA BAHAIGRASS 10 LB/ACRE DURANA CLOVER 10 LB/ACRE BROWNTOP OR FOXTAIL MILLET 15 LB/ACRE CONSULT CONSERVATION ENGINEER OR SOIL CONSERVATION SERVICE FOR ADDITIONAL INFORMATION CONCERNING OTHER ALTERNATIVES FOR VEGETATION OF DENUDED AREAS. THE ABOVE VEGETATION RATES ARE THOSE WHICH DO WELL UNDER LOCAL CONDITIONS; OTHER SEEDING RATE COMBINATIONS ARE POSSIBLE. *NURSE CROP/TEMPORARY - RESEED ACCORDING TO OPTIMUM SEASON FOR DESIRED PERMANENT VEGETATION. DO NOT ALLOW TEMPORARY COVER TO GROW OVER 12" IN HEIGHT BEFORE MOWING, OTHERWISE FESCUE MAY BE SHADED OUT. SEEDBED PREPARATION 1.CHISEL COMPACTED AREAS AND SPREAD TOPSOIL THREE INCHES DEEP OVER ADVERSE SOIL CONDITIONS, IF AVAILABLE. 2.RIP THE ENTIRE AREA TO SIX INCHES DEEP. 3.REMOVE ALL LOOSE ROCK, ROOTS, AND OTHER OBSTRUCTIONS LEAVING SURFACE REASONABLY SMOOTH AND UNIFORM. 4.APPLY AGRICULTURAL LIME, FERTILIZER AND SUPERPHOSPHATE UNIFORMLY AND MIX WITH SOIL (SEE MIXTURE). 5.CONTINUE TILLAGE UNTIL A WELL-PULVERIZED, FIRM REASONABLY UNIFORM SEEDBED IS PREPARED FOUR TO SIX INCHES DEEP. 6.SEED ON A FRESHLY PREPARED SEEDBED AND COVER SEED LIGHTLY WITH SEEDING EQUIPMENT OR CULTIPACK AFTER SEEDING. 7.MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH. 8.INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RESEEDINGS WITHIN THE PLANTING SEASON, IF POSSIBLE. IF STAND SHOULD BE OVER 60% DAMAGED, RE-ESTABLISH FOLLOWING THE ORIGINAL LIME, FERTILIZER AND SEEDING RATES. NORTH N GRAPHIC SCALE 50'0 50' 1" = 50' 25' PROP. CONSTRUCTION ENTRANCE (SEE DETAIL SHEET 6) PROP. SILT FENCE/TREE PROTECTION FENCE COMBO (TYP.) (SEE DETAIL SHEET 6) PROP. SUPER SILT FENCE ALONG STREAM (TYP.) (SEE DETAIL SHEET 6) PROP. LIMITS OF DISTURBANCE (TYP.) EXIST. TOP OF BANK (TYP.) PROP. SILT FENCE/TREE PROTECTION FENCE COMBO (TYP.) (SEE DETAIL SHEET 6) PROP. STOCKPILE AREA 50 . 0 0 ' 20 . 0 0 ' 30 . 0 0 ' ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R 30 . 0 0 ' 20. 0 0 ' 50 . 0 0 ' PA R L I E R D R I V E 30 . 0 0 ' 20 . 0 0 ' 50 . 0 0 ' PROP. SUPER SILT FENCE ALONG STREAM (TYP.) (SEE DETAIL SHEET 6) 134 133 129 128 127 126 125 EXIST. WETLAND (TYP.) EXIST. STREAM(1,285 LF ON PROPERTY) LEGEND EXISTING INTERMEDIATE CONTOUR EXISTING INDEX CONTOUR SUPER SILT FENCE SILT/TREE PROTECTION FENCE PROPOSED INTERMEDIATE CONTOUR PROPOSED INDEX CONTOUR LIMITS OF DISTURBANCE EXISTING SPOT ELEVATION PROPOSED SPOT ELEVATION ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: GR A D I N G & E R O S I O N CO N T R O L P L A N PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 40'1/21/22 KNBBMM 2202 65 NOT FOR CONSTRUCTION NORTH N GRAPHIC SCALE 40'0 1" = 40' 40'20' LIMITS OF DISTURBANCE = 31,954 SF (0.73 AC) NOT FOR CONSTRUCTION ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: ER O S I O N C O N T R O L D E T A I L S PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A NTS1/21/22 KNBBMM 2202 66 U. S. Department of Homeland Security Region IV 3005 Chamblee Tucker Road Atlanta, GA 30341 www.fema.gov December 21, 2020 The Honorable Jacques Gilbert Mayor, Town of Apex 73 Hunter Street P.O. Box 250 Apex, North Carolina 27502 RE: National Flood Insurance Program (NFIP) - Community Assistance Visit (CAV) Dear Mayor Gilbert: The Federal Emergency Management Agency (FEMA) Region IV has carefully reviewed your remediation options for Violation Case #17-04-7608P Town of Apex, Parlier Drive culvert. During a conference call on October 1, 2020, representatives from FEMA, the Town of Apex, the State, and the project engineer discussed the following remediation options. Remediation Options 1. Remove culvert Removing the existing road crossing would decrease crossings of Clark Branch, create two public roadway dead-ends which would not accommodate first responder vehicle turn arounds, require re-laying the existing public watermain under the stream, re-laying the existing public power and other dry utilities under the stream and would cut off the stormwater detention basin facility on the northwest of Parlier Drive from the stormwater management piping on the south side of Parlier Drive. Due to elevation changes, the storm pipe cannot be re-laid under the stream and hence the storm water would not reach the detention basin for the required treatment prior to discharge to Clark Branch. In the current as-built condition, the 100-year Water Surface Elevation (WSEL) has returned to the pre-developed Corrected Effective elevation prior to the upstream property line boundary. The localized rise in the WSEL is contained on-site and does not impact any insurable structures. 2. Add culvert In order to restrict the rise between the Corrective Effective 100-year WSEL vs the final constructed 100-year WSEL to approximately 1.0’ upstream of the culvert (use Sta 63+15, which is only 60feet upstream of the culvert face) the existing passage would almost need to be doubled with the addition of a 10 feet width x 5 feet height concrete box culvert at invert 292.12 feet ( the existing culvert is a 10 feet width x 6 feet height box). 2 The additional concrete box culvert would be approximately 110 linear feet with 20 feet long concrete headwalls upstream and downstream. The culvert invert would be approximately 20 feet below the road surface and would require a significant trench and temporary blockage to the roadway. The culvert would need to cross under existing operating storm pipe, water main and other dry utilities such as electrical and cable. In our opinion, doubling the size of the existing culvert is not a simple nor reasonable remediation. The additional culvert would drop the 100-year WSEL rise by several feet at the upstream culvert face, but within 500 linear feet. The benefit of the additional culvert is erased when the 100-year WSEL is the same in the as-built condition as if no additional culvert was added (by Station 67+69). In both the current as-built condition and the potential remediation scenario listed above, the 100-year WSEL has returned to the pre-developed Corrected Effective elevation prior to the upstream property line boundary. The short lived, localized rise in the 100-year WSEL created in the as-built condition does not impact any adjoining properties or any on-site structures. 3. Remove material from floodplain By excavating approximately 1 – 4 feet of material along a 60 feet wide swath on the northern banks to approximately 110 linear feet downstream and 120 linear feet upstream of the culvert, total area approximately 14,000 square feet, a total of approximately 1,200 cubic yards of soil can be removed from the floodplain. This would be significantly more than the 860 cubic yards placed in the floodplain to construct Parlier Drive. Increasing the stream conveyance, as indicated above, would decrease the upstream 100-year WSEL by approximately 0.5 foot from the current as-built condition. The excavation would increase the floodplain storage, decrease stream velocities, allow replanting with appropriate riparian buffer vegetation and return the 100-year WSEL at an earlier station. The 100-year WSEL returns to the Corrected Effective elevation prior to reaching the upstream property boundary and the local onsite rise does not impact any existing or proposed insurable structures. Ideally, remediation option #1 is the best option, as it meets both the Town’s Floodplain Ordinance at the time the development occurred and the requirements of the NFIP. Remediation option #2, which results in a reduced rise of approximately 1foot, would be an acceptable compromise to resolve the violation. A major component of the NFIP is regulating development in the Special Flood Hazard Area and more particularly regulating encroachments in the floodway and non-encroachment areas. These violations must be remedied in order to meet requirements for participation in the NFIP. 3We continue to offer any assistance you may require. If you need further assistance on the floodway rise issue or general questions on the CAV, please contact Ms. Valerie Anderson by email at valerie.anderson@fema.dhs.gov. or Ms. Tammy Hansen at tamara.hansen@fema.dhs.gov.Sincerely,Jason O Hunter, CFM, ChiefFloodplain Management & Insurance Branch Mitigation DivisionCc: Steve Garrett, State NFIP CoordinatorAdam Stephenson, Town of Apex, Floodplain AdministratorSincerely, ESE of North Carolina, PC 5400 Trinity Road · Suite 204 · Raleigh, NC 27607 (919) 321-4800 Meeting Minutes Attendees: Please review below notes and respond with comments/revisions by 29 November. Adam Stephenson, PE, Apex Peter Bellantoni, Toll Brothers Ted Pease, Toll Brothers Michelle Savage-Measday, PWS ECS Southeast LLP Tamara Hansen, FEMA Atlanta Valerie Anderson, FEMA Atlanta Steve Garrett, NCDPS Scott Gentry, NCDPS George (Lyle) Phillips, USACOE Wilmington Recorded by: Mark Mayhew, PE, ESE Cc: Justin Brown, ESE Consultants, Inc. Date: 19 November 2021 updated 22 Nov #2 & #6 A.S. Re: Parlier Drive at Clark Branch, Apex, Case #17-04-7608P Attached: Floodplain Comparisons Exhibit dated 11 November 2021 by ESE Consultants, Inc 1. Discussed history of culvert construction and violation and agreed on path to address violation, amend regulated floodplain and issue building permits for Lots 128 and 127. Steps are as follows: 2. ESE and ECS to submit application for NWP #29 to Corps to permit approximately 14,000 sf of disturbance to excavate and remove approximately 1,200 cy from the floodplain as shown on the attached Floodplain Comparisons Exhibit dated 11 November 2021. The excavation will lower but not completely eliminate the base flood elevation rise created by the road crossing. 3. Corps believes proposed work can be classified as temporary impacts to wetlands and purpose is to provide corrective action to the culvert violation. Application will address the impracticability of removing the existing road crossing or adding another culvert. Corps noted there are current restrictions on issuing NWP #29's. Upon lifting of restrictions Corps program provides 30 day review period for completeness and 15 days for issuance. Corps suggest sketch plan be submitted for review with Corps and DWR prior to application submittal. 4. Upon issuance of permit, Toll to perform work, as-built survey and update Topographic Work Plan for FEMA review and issuance of finding removing violation. 5. ESE to update LOMR application with as-built data after excavation work and submit to FEMA and NCDPS for approval. Prior model was reviewed by NCDEP and FEMA and it is anticipated updated data will involve a 60 day review. Issuance of updated FIRM takes 4-5 months after LOMR approval. 6. Apex will issue building permits for Lots 128 and 127 after LOMR approval and prior to revised FIRM issuance. 1 Homewood, Sue From:Cohn, Colleen M Sent:Wednesday, August 3, 2022 3:23 PM To:Homewood, Sue Subject:FW: [External] RE: Pines at Wake Crossing DWR#20220388 Attachments:22VAR03 PARLIER DRIVE Staff Report.docx; 220516.typical stream xsection showing proposed excavation.pdf; 49-14384 Pines at Wake Crossing - Stream Photos.pdf; 2202.Parlier Dr Crossing - Impact Exhibits.pdf Follow Up Flag:Follow up Flag Status:Completed From: Michelle Savage‐Measday, PWS <MMeasday@ecslimited.com> Sent: Thursday, June 9, 2022 5:26 PM To: Cohn, Colleen M <colleen.cohn@ncdenr.gov> Cc: George.L.Phillips@usace.army.mil; Mark Mayhew <mmayhew@eseconsultants.com> Subject: [External] RE: Pines at Wake Crossing DWR#20220388 CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to Report Spam. Colleen, Thank you for your comments. See below for responses. Thank you, Michelle MICHELLE SAVAGE‐MEASDAY, PWS | Environmental Senior Project Manager T 919.861.9910 | D 919.861.9821 | C 919.441.2437 5260 Greens Dairy Road | Raleigh | NC | 27616 ECS SOUTHEAST, LLP www.ecslimited.com THE NEW ASTM PHASE I STANDARD IS HERE ‐ Contact us to find out more. Instagram | LinkedIn | Facebook | Twitter Confidential/proprietary message/attachments. Delete message/attachments if not intended recipient.53195319 From: Cohn, Colleen M <colleen.cohn@ncdenr.gov> Sent: Friday, May 20, 2022 4:10 PM To: Michelle Savage‐Measday, PWS <MMeasday@ecslimited.com> Cc: George.L.Phillips@usace.army.mil Subject: [EXTERNAL] Pines at Wake Crossing DWR#20220388 Good afternoon, I am reviewing the above referenced project, and in order to complete the review, some additional information is required: 2 1) Please provide additional information on avoidance and minimization of wetlands impacts. Based on the included FEMA letter dated December 21, 2020, there are two other options available, including removing a culvert or adding a culvert. Option 1, removing the culvert, was stated as the best option. [15A NCAC 02H .0502(c)] The two other options were discussed at length with FEMA and subsequent to FEMA’s letter of 21 December 2020 it was agreed Option 3 would be the best scenario to proceed with. As was explained to FEMA, Option 1, Remove existing culvert, is not a viable option given the safety issues it would create to the public and impact to first responders due to the creation of two dead‐end roads. Removing the culvert would require removing and relaying the existing public utilities such as water, power and communications from under the roadway to UNDER the stream bed. Removing the culvert would disconnect the roadway stormwater management system and prevent stormwater from reaching the detention basin on the north side and hence from being treated prior to stream discharge. Option 2, Add an additional culvert would disturb approximately the same amount of wetlands and buffer due to the need to regrade (lower) the flood fringe to direct water into and out of the culvert, add appropriate riprap and to provide construction access to the upstream and downstream areas. 2) Please provide additional information on how the proposed excavation of wetland will not cause a violation of water quality standards. [15A NCAC .0506(b)(2)] The construction techniques shall be conducted in accordance with NCDENR standards. Temporary and additional erosion control measures shall be maintained throughout the construction process. Silt fencing will be placed at the bottom of the slopes to deter sediment and control erosion during excavation activities. Temporary erosion, sedimentation, and pollution controls will be installed prior to and maintained during the entire construction duration and until final stabilization is established. Refer to Sheet 5 of the impact exhibits for the grading and erosion control plan. Refer to Sheet 4 for the revegetation plan to stabilize the disturbed area. No excavation is proposed below the OHWM. See attached stream section showing limits of excavation and stream photos. 3) Please provide additional details on the buffer impacts. This area appears to be under the Town of Apex’s jurisdiction, but it is unclear what item in the Table of Uses you are proposing the activities fall under. [15A NCAC .02B .0267] The Town of Apex has reviewed and will be issuing a variance for the riparian buffer impacts. Upon receipt of the variance, a copy will be sent to you. The variance is expected to be approved at the next Apex Board of Adjustment Meeting in June. Attached is the Town of Apex Staff Report on the variance request. If the variance request is granted by Apex, the applicant will then move to the NC EMC for approval for the Zone 1 impacts. 4) If the US Army Corps of Engineers requests any additional information, please provide the Division with a copy of your response to the USACE. [15A NCAC 02H .0502(c)] Will comply. Thanks, Colleen Cohn Environmental Specialist II North Carolina Department of Environmental Quality Division of Water Resources Raleigh Regional Office 3800 Barrett Drive Raleigh, NC 27609 Office: 919-791-4258 E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. BOARD OF ADJUSTMENT STAFF REPORT #22VAR03 May 17, 2022 Page 1 of 4 PROJECT DESCRIPTION: Application: #22VAR03 Location: 0 Parlier Drive Applicant/Owner: Ted Pease, Toll NC II LP./Green Level Crossing Community Assc. Inc. PINs: 0733133605 & 0733049008 Current Zoning: LD SF-CU (#05RZ22) Current Use: FROM UDO SECTION 4.3.1(N), Single-Family Residential Town Limits: Corporate Limits ATTACHMENTS: 1. Vicinity Map 2. Application 3. Master Subdivision Plan 4. Final Subdivision Plat 5. Riparian Buffer Map BACKGROUND: The subject properties include portions of the platted Open Space surrounding Parlier Drive for the Pines at Wake Crossing Phase 2 Subdivision. This subdivision sits south of Roberts Road, east of Green Level Church Road, north of Greenmoor Subdivision, and west of Interstate 540. The Construction Drawings for the Master Subdivision Plan, then known as The Hunt at Green Level Crossing, were approved in 2007 and platted, as The Pines at Wake Crossing in 2017. A significant portion of the subject properties lie within the 100’ Riparian Buffer required by the Watershed Protection Overlay District. • July 16, 2007 - Master Subdivision Plan approval • July 23, 2007 – Property sold to Toll Brothers, LLC • August 23, 2017 - Final Subdivision Plat recorded • August 1, 2000 - UDO Adopted • March 23, 2021 - UDO Amendments to Section 6.1.13.E.2 Watershed Protection Overlay Districts, Modifications by Variance, Standards • February 8, 2022 – Property deeded to Green Level Crossing Community Association, Inc. • April 11, 2022 - Applicant submitted variance application VARIANCE REQUEST: The applicant is requesting a variance from Section 6.1.11.G Uses Permitted Within the Riparian Buffer to allow for improvements to provide corrective action to address the FEMA floodplain violation associated with the culvert construction. The corrective action involves the removal of approximately BOARD OF ADJUSTMENT STAFF REPORT #22VAR03 May 17, 2022 Page 2 of 4 1,200 cy (cubic yard) from the floodplain. The excavation will lower the base flood elevation rise created by the previously constructed road crossing over Clark Branch. The proposed remedy will create additional flood storage adjacent to Clark Branch, which is the preferred alternative, supported by FEMA. The FEMA violation must be remedied to meet requirements for participation in the National Flood Insurance Program (NFIP), in which Apex is a participant. A major component of the NFIP is regulating development in the Special Flood Hazard Area and more particularly regulating encroachments in the floodway and non-encroachment areas. The excavation impact will result in the temporary disturbance to approximately 0.17 acre of forested wetland. No impervious surfaces will be introduced into Zone 1 or Zone 2. Following the excavation activities, the disturbed area will be graded to create a reasonably smooth and uniform surface and reseeded with the NC Piedmont Riparian Mix (Ernst Seed Mix – ERNMX-307). The construction of the project will not necessitate the use of any specialized construction techniques. Standard construction equipment such as cranes, excavators, dump trucks, and similar vehicles would be used for the project. Proper erosion and sedimentation control measures would be employed throughout the project. Typical materials and machinery will be used on-site during the construction process. The applicant proposes to minimize impacts through construction techniques. The construction techniques shall be conducted in accordance with NCDENR standards. Temporary and additional erosion control measures shall be maintained throughout the construction process. Silt fencing will be placed at the bottom of the slopes to deter sediment and control erosion during excavation activities. Temporary erosion, sedimentation, and pollution controls will be installed prior to and maintained during the entire construction duration and until final stabilization is established. The floodplain seed mix will allow the area to re-establish itself. Zones 1 and 2 shall remain vegetated. Section 6.1.11.G of the Unified Development Ordinance (UDO) reads: 6.1.11.G Uses Permitted Within the Riparian Buffer. This Section shall apply to activities conducted within, or outside of with hydrologic impacts in violation of the diffuse flow requirements set out in Sec. 6.1.11.E upon, a riparian buffer regulated by this Section. The Town shall issue an approval for new development only if the proposed development will avoid impacts to riparian buffers regulated by this Section or, if an impact to any such buffer is proposed, in accordance with the requirements in Sec. 6.1.11.G.1 or 2 below, as applicable, the applicant has demonstrated that: (i) the proposed activity is exempt, (ii) the proposed activity is allowable or allowable with mitigation, and the requirements of this Section for proceeding such designated use have been met, or (iii) a variance authorizing the proposed activity has been obtained. An amendment to Sec. 6.1.13.E.2-3 Watershed Protection Overlay Districts, Modifications by Variance, Standards was approved in order to allow property owners to request a variance from the standards of the Watershed Protection Overlay Districts regardless of when the property was purchased. The previous standard required the Board of Adjustment to find that the property owner did not purchase BOARD OF ADJUSTMENT STAFF REPORT #22VAR03 May 17, 2022 Page 3 of 4 the property after Sec. 6.1 was codified with the adoption the Unified Development Ordinance in 2000. Below are the March 23, 2021 amendments to Sec. 6.1.13.E.2-3: 6.1.13 Watershed Protection Overlay Districts, Modifications by Variance … E) Standards … 2) In order to approve an application for a variance permit, the Board of Adjustment shall make a finding of fact as to whether the standards of Sec. 2.3.8D.1-3 Variance permit, Standards are met. 3) The Board of Adjustment shall make a finding of fact as to: … a) whether the variance is in harmony with the general purpose and intent of the Town’s Watershed Protection Overlay Districts and preserves its spirit; and b) whether in granting the variance the public safety and welfare have been assured, water quality has been protected and substantial justice has been done. STANDARDS FOR VARIANCE REQUESTS: To approve a variance permit, the Board of Adjustment must find that all the following standards as listed in Sec. 2.3.8(D) are being met. In the alternative, to deny the variance permit, the Board of Adjustment must find that any of the following standards are not being met: 1) Unnecessary Hardship. Unnecessary hardship would result from the strict application of the ordinance. It shall not be necessary to demonstrate that, in the absence of the variance, no reasonable use can be made of the property. 2) Hardship Results from Peculiar Conditions. The hardship results from conditions that are peculiar to the property, such as location, size, or topography. Hardships resulting from personal circumstances, as well as hardships resulting from conditions that are common to the neighborhood or the general public, may not be the basis for granting a variance. 3) Not Result of Action by Applicant. The hardship did not result from actions taken by the applicant or the property owner. The act of purchasing property with knowledge that circumstances exist that may justify the granting of a variance shall not be regarded as a self-created hardship. 4) Consistency with the UDO. The requested variance is consistent with the spirit, purpose, and intent of the ordinance, such that public safety is secured, and substantial justice is achieved. BOARD OF ADJUSTMENT STAFF REPORT #22VAR03 May 17, 2022 Page 4 of 4 STAFF ANALYSIS: The Final Subdivision Plat for The Pines at Wake Crossing Phase 2 was recorded on August 23, 2017. The existing structure has remained since its original construction serving residential development. The property was deeded to applicant February 8, 2022. The applicant purchased property subject to the Watershed Protection Overlay District. The Watershed Protection Overlay District has been in place since the adoption of the Unified Development Ordinance (UDO) August 1, 2000. The UDO was amended by Town Council on March 23, 2021 to allow for owners of property located within riparian buffers to apply for a variance. The applicant filed the variance petition on April 11, 2022 in an effort to remedy the FEMA violation. Should no improvements be permitted on the subject site then it will remain in violation of FEMA regulations, Town of Apex Floodplain regulations, and may not meet requirements for participation within the NFIP. According to Water Resources staff, the proposed improvements are the overall least impactful solution for mitigating the violation of FEMA regulations. If the variance is granted, the applicant will then move to the North Carolina Environmental Management Commission (NCEMC) for further approval for Zone 1 impacts. 1 -Downstream view 2 -Upstream view May 16, 2022 ECS Southeast, LLP ECS Project # 49:14384 3 -Evidence of slight undercutting of channel at approx. 3.5 to 4.0 feet bl TOB 4 -North facing view of stream bank May 16, 2022 ECS Southeast, LLP ECS Project # 49:14384 5 -Streambank 6 -Closer to Culvert May 16, 2022 ECS Southeast, LLP ECS Project # 49:14384 OHWM 292.3+/- Ordinary High Water Mark (OHWM) shown per observations by Michelle Savage-Measday, PWS, ECS Southeast, LLP, 13 May 2022. © 2022 Microsoft Corporation © 2022 Maxar ©CNES (2022) Distribution Airbus DS EXIST. TOP OF BANK (TYP.) 50 . 0 0 ' 20 . 0 0 ' 30 . 0 0 ' ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R 30 . 0 0 ' 20. 0 0 ' 50 . 0 0 ' PA R L I E R D R I V E 30 . 0 0 ' 20 . 0 0 ' 50 . 0 0 ' 134 133 129 128 127 126 125 EXIST. WETLAND (TYP.) EXIST. STREAM(1,285 LF ON PROPERTY) ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: EX I S T I N G C O N D I T I O N S P L A N PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 40'1/21/22 KNBBMM 2202 61 NOT FOR CONSTRUCTION NORTH N GRAPHIC SCALE 40'0 1" = 40' 40'20' EXIST. TOP OF BANK (TYP.) 50 . 0 0 ' 20 . 0 0 ' 30 . 0 0 ' ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R 30 . 0 0 ' 20. 0 0 ' 50 . 0 0 ' PA R L I E R D R I V E 30 . 0 0 ' 20 . 0 0 ' 50 . 0 0 ' 134 133 129 128 127 126 125 EXIST. WETLAND (TYP.) EXIST. STREAM(1,285 LF ON PROPERTY) ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: BU F F E R I M P A C T E X H I B I T PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 40'1/21/22 KNBBMM 2202 62 NOT FOR CONSTRUCTION BUFFER IMPACT AREA ZONE 1 9,022 SF 0.21 AC 280 LF ZONE 2 5,088 SF 0.12 AC 270 LF ZONE 3 8,928 SF 0.20 AC 240 LF NORTH N GRAPHIC SCALE 40'0 1" = 40' 40'20' EXIST. TOP OF BANK (TYP.) 50 . 0 0 ' 20 . 0 0 ' 30 . 0 0 ' ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R 30 . 0 0 ' 20. 0 0 ' 50 . 0 0 ' PA R L I E R D R I V E 30 . 0 0 ' 20 . 0 0 ' 50 . 0 0 ' 134 133 129 128 127 126 125 EXIST. WETLAND (TYP.) EXIST. STREAM(1,285 LF ON PROPERTY) ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: WE T L A N D I M P A C T E X H I B I T PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 40'1/21/22 KNBBMM 2202 63 NOT FOR CONSTRUCTION NORTH N GRAPHIC SCALE 40'0 1" = 40' 40'20' WETLAND IMPACT AREA 7,691 SF 0.18 AC NOT FOR CONSTRUCTION ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: RE V E G E T A T I O N P L A N PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 50'1/21/22 KNBBMM 2202 64 FLOODPLAIN SEED MIX NC PIEDMONT RIPARIAN MIX ERNST SEED MIX - ERNMX-307 (OR APPROVED EQUAL) Mix Composition 29.9% Sorghastrum nutans, 'Scout' (Indiangrass, ‘Scout’) 20.0% Elymus virginicus, PA Ecotype (Virginia Wildrye, PA Ecotype) 20.0% Panicum virgatum, 'Carthage', NC Ecotype (Switchgrass, ‘Carthage’, NC Ecotype) 10.0% Panicum anceps, Eastern Shore MD Ecotype (Beaked Panicgrass, Eastern Shore MD Ecotype) 5.0% Chasmanthium latifolium, WV Ecotype (River Oats, WV Ecotype) 5.0% Panicum rigidulum, Coastal Plain NC Ecotype (Redtop Panicgrass, Coastal Plain NC Ecotype) 3.0% Chamaecrista fasciculata, FL Ecotype (Partridge Pea, FL Ecotype) 2.0% Carex vulpinoidea, PA Ecotype (Fox Sedge, PA Ecotype) 2.0% Coreopsis lanceolata (Lanceleaf Coreopsis) 2.0% Rudbeckia hirta (Blackeyed Susan) 0.5% Juncus effusus, Coastal Plain NC Ecotype (Soft Rush, Coastal Plain NC Ecotype) 0.4% Vernonia noveboracensis, PA Ecotype (New York Ironweed, PA Ecotype) 0.2% Helenium autumnale, NJ Ecotype (Common Sneezeweed, NJ Ecotype) SEEDING RATE: 20 LB PER ACRE (WITH GRAIN RYE COVER CROP AT 30 LBS PER ACRE SEPTEMBER 1 TO APRIL 31). REQUIRED GROUND STABILIZATION TIMEFRAMES SITE AREA DESCRIPTION TIMEFRAME VARIATIONS -7 DAYS FOR PERIMETER DIKES, SWALES, DITCHES, PERIMETER SLOPES AND HQW ZONES -10 DAYS FOR FALLS LAKE WATERSHED UNLESS THERE IS ZERO SLOPE STABILIZE WITHIN THIS MANY CALENDAR DAYS AFTER CEASING LAND DISTURBANCE 7 14 None (a)PERIMETER DIKES, SWALES, DITCHES, AND PERIMETER SLOPES (b)HIGH QUALITY WATER (HQW) ZONES (c)SLOPES STEEPER THAN 3:1 IF SLOPES ARE 10' OR LESS IN LENGTH AND ARE NOT STEEPER THAN 2:1, 14 DAYS ARE ALLOWED (d)SLOPES 3:1 TO 4:1 (e)AREAS WITH SLOPES FLATTER THAN 4:1 -7 DAYS FOR SLOPES GREATER THAN 50' IN LENGTH AND WITH SLOPES STEEPER THAN 4:1 -7 DAYS FOR PERIMETER DIKES, SWALES, DITCHES, PERIMETER SLOPES AND HQW ZONES -10 DAYS FOR FALLS LAKE WATERSHED 7 None 7 14 ALL DISTURBED AREAS OUTSIDE OF THE FLOODPLAIN SHALL USE THE NCDEQ STANDARD PERMANENT SEED MIX: PERMANENT SEEDING NOTES SEEDING SCHEDULE PERMANENT SEEDING DATE TYPE PLANTING RATE MAR. 1 - AUG. 31 WATER STAR TALL FESCUE 20 LB/ACRE SARAH BERMUDA UNHULLED 50 LB/ACRE PENSACOLA BAHAIGRASS 25 LB/ACRE DURANA CLOVER 10 LB/ACRE RYEGRAIN 10 LB/ACRE SEP. 1 - FEB. 28 WATER STAR TALL FESCUE 50 LB/ACRE SARAH BERMUDA UNHULLED 20 LB/ACRE PENSACOLA BAHAIGRASS 10 LB/ACRE DURANA CLOVER 10 LB/ACRE BROWNTOP OR FOXTAIL MILLET 15 LB/ACRE CONSULT CONSERVATION ENGINEER OR SOIL CONSERVATION SERVICE FOR ADDITIONAL INFORMATION CONCERNING OTHER ALTERNATIVES FOR VEGETATION OF DENUDED AREAS. THE ABOVE VEGETATION RATES ARE THOSE WHICH DO WELL UNDER LOCAL CONDITIONS; OTHER SEEDING RATE COMBINATIONS ARE POSSIBLE. *NURSE CROP/TEMPORARY - RESEED ACCORDING TO OPTIMUM SEASON FOR DESIRED PERMANENT VEGETATION. DO NOT ALLOW TEMPORARY COVER TO GROW OVER 12" IN HEIGHT BEFORE MOWING, OTHERWISE FESCUE MAY BE SHADED OUT. SEEDBED PREPARATION 1.CHISEL COMPACTED AREAS AND SPREAD TOPSOIL THREE INCHES DEEP OVER ADVERSE SOIL CONDITIONS, IF AVAILABLE. 2.RIP THE ENTIRE AREA TO SIX INCHES DEEP. 3.REMOVE ALL LOOSE ROCK, ROOTS, AND OTHER OBSTRUCTIONS LEAVING SURFACE REASONABLY SMOOTH AND UNIFORM. 4.APPLY AGRICULTURAL LIME, FERTILIZER AND SUPERPHOSPHATE UNIFORMLY AND MIX WITH SOIL (SEE MIXTURE). 5.CONTINUE TILLAGE UNTIL A WELL-PULVERIZED, FIRM REASONABLY UNIFORM SEEDBED IS PREPARED FOUR TO SIX INCHES DEEP. 6.SEED ON A FRESHLY PREPARED SEEDBED AND COVER SEED LIGHTLY WITH SEEDING EQUIPMENT OR CULTIPACK AFTER SEEDING. 7.MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH. 8.INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RESEEDINGS WITHIN THE PLANTING SEASON, IF POSSIBLE. IF STAND SHOULD BE OVER 60% DAMAGED, RE-ESTABLISH FOLLOWING THE ORIGINAL LIME, FERTILIZER AND SEEDING RATES. NORTH N GRAPHIC SCALE 50'0 50' 1" = 50' 25' PROP. CONSTRUCTION ENTRANCE (SEE DETAIL SHEET 6) PROP. SILT FENCE/TREE PROTECTION FENCE COMBO (TYP.) (SEE DETAIL SHEET 6) PROP. SUPER SILT FENCE ALONG STREAM (TYP.) (SEE DETAIL SHEET 6) PROP. LIMITS OF DISTURBANCE (TYP.) EXIST. TOP OF BANK (TYP.) PROP. SILT FENCE/TREE PROTECTION FENCE COMBO (TYP.) (SEE DETAIL SHEET 6) PROP. STOCKPILE AREA 50 . 0 0 ' 20 . 0 0 ' 30 . 0 0 ' ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R ZONE 1 B U F F E R ZONE 2 B U F F E R ZONE 3 B U F F E R 30 . 0 0 ' 20. 0 0 ' 50 . 0 0 ' PA R L I E R D R I V E 30 . 0 0 ' 20 . 0 0 ' 50 . 0 0 ' PROP. SUPER SILT FENCE ALONG STREAM (TYP.) (SEE DETAIL SHEET 6) 134 133 129 128 127 126 125 EXIST. WETLAND (TYP.) EXIST. STREAM(1,285 LF ON PROPERTY) LEGEND EXISTING INTERMEDIATE CONTOUR EXISTING INDEX CONTOUR SUPER SILT FENCE SILT/TREE PROTECTION FENCE PROPOSED INTERMEDIATE CONTOUR PROPOSED INDEX CONTOUR LIMITS OF DISTURBANCE EXISTING SPOT ELEVATION PROPOSED SPOT ELEVATION ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: GR A D I N G & E R O S I O N CO N T R O L P L A N PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A 1" = 40'1/21/22 KNBBMM 2202 65 NOT FOR CONSTRUCTION NORTH N GRAPHIC SCALE 40'0 1" = 40' 40'20' LIMITS OF DISTURBANCE = 31,954 SF (0.73 AC) NOT FOR CONSTRUCTION ES E C O N S U L T A N T S EN G I N E E R I N G • P L A N N I N G • S U R V E Y I N G • E N V I R O N M E N T A L ES E o f N o r t h C a r o l i n a , P C 54 0 0 T r i n i t y R o a d • S u i t e 2 0 4 Ra l e i g h , N C 2 7 6 0 7 T: 9 1 9 - 3 2 1 - 4 8 0 0 Lic e n s e # C - 2 9 7 3 JOB NO.:FILE NAME: DA T E RE V . DE S C R I P T I O N DR A W N SCALE: DRAWN:DESIGN: DATE: OFSHEETNO.: ER O S I O N C O N T R O L D E T A I L S PI N E S A T W A K E C R O S S I N G CA R Y , W A K E C O U N T Y , N O R T H C A R O L I N A NTS1/21/22 KNBBMM 2202 66