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Home My WebLink About20221197 Ver 2_Chapter E - Stream Permitting Document_20230302Chapter E: Stream Permitting Document G �'1�= E NAB REY E 11 p� Development I Construction I Management N:\Projects\2022\FLA-2200811.00\70-Permitting\71-Application\I P\20230124 I P Supplemental Narrative .docx _ APPROX 25' OF = EXISTING STREAM -------- _ RESTORATION OF APPROX. =TO REMAIN - �_ 860L.F. OF JURISDICTIONAL -- PROPOSED STREAM ' L DOG RUN - _ _ \ �\ TOB TO To. TOB 'vC Tvo�. �. TOR 7 I 108 Toe 5+50•.-� • IM SWIM -" SWIM • .� TOI SWIM PROPOSED BUILDIN/ S> ALK APPROXIMATE g SWIM BUFFER EXISTING STREAM [O G TO BE BACKFILLED L i IMPACTED APPROX. JURISDICTIONAL 650 L.F. M JURISDICTIONAL STREAM (1) 20' EXISTING CULVERT' WSTING ////// CULVERTS TO BE REMOVED P CTSUMMARY PROJECT OWNER MBRY PROPERTY ADRliSS 3027 NORTH TRYON STREET, CHARLOTTE, NC. COORDINATES LA °15'08.9"N LONG: 80°48'41S'W PROPERTY SIZE (ACRES) 8.65 LOD(ACRES)Ll T7F---MT-1.5 EXISTING JURISDICTIONAL STREAM IMPACTS L. FT) 65D EXISTING ACTIVE CHANNEL BOTTO (L.FT) 6 PROPOSED JURISDICTIONAL I STREAM LENGTH (L. PT) 800 CUT/FILL(YRDA3) M TEM 12,487(CUT) TYPICAL CROSS SECTIONS SEE SHEET 10 EXISTING STREAM SANKFULL WIDTH (Fr) EM 11.1 PROPOSED STREAM BANKFULL WIDTH (I' ) I MA EM 11.0 GROUND DISTRIBUTING Ij tj SEE PROJECT DESCRIPTION EMEIY ODA 3 TABLE 1. Morphologic Charade tics (to be included on plan donarlgs) Drainage Area: 115.2 Acres 0.18 uare Miles xlsting ProPonad Proposed Ranges 1. S[reem Type / Cin C1/3 2. Bankfull Area,A(sq ) 3. BanMUII Wdtlr, W () .3 .1 13.0 Ito 90-57.5 8.3-22.1 4. Mean Ban�Ml Depth, (fl) „J.2 1.2 1.1 -1.3 5. Maximum Depth, dm4x R) w .8 1.8 1.3.2.8 6. Width/Depth Ratio, WDR .2 9.3 7.5-17 7. Floodpmne Width, Wilp. 30.0 3020 8. Entrenchment Ratio, ER • tll 2 2.7 0.8. 8.4 9. Bank Height Ratio, BHR=LBH/tl d 1.0 IX-1.1 10. Sinuosity, K = I chap /Leal 18 1.15 -1.2 11. Avg Water Surfers Slope, S-(8%I) 0.010 0.010 0.008-0.010 12. Riffle Slope, Srif (8/ft) _ 0.025 0.020 0.020 0.068 1 rea 20 15 _0230 _ 14. Max Depth Pool, dpool (ft) b 3.0 1.3 1.0-2.0\ 15. Pool to Pool Sparing, p-p Ra ge 50 45 30-M 16. Pool Length, Lpool R.nga 30 20 1540 17.1.... Bann Ara., Aib(sq a/ 12.0 6A 6.0-11.5 16. Inner Berm Width, Wib(ft) a/ 12.0 &0 ]-11.5 19. Mean Inner Berm Depth, did (ft) a/ 1.0 0.8 0.4 -1.0 20. Inner Be- Maximum Depth, dmaxib(ft) N 1.5 1.0 0.5-1.2 a/ Measured At typical nBle b/ Measured at typical pool fl_-cBank Height divided by Bankfull Depth measured at same section d/ Channel width measured et two times the Benkfull Depth divided by the 13-Vull Width a/ Proposed values compared to proposed values hem the typical did, / NA TR C ti9' ORIGINAL STREAM SWIM BUFFER I• / (1)80' EXISTING CULVERT N. TRYON STREET U.S. #29 80' FUMc R/W (0/Si V 100' Publ'c R/W (0.8. MM, M. 2JO) sv s) PRO POSED STREAM CENTERLINE I PROPOSED INNER BERM I //R I ED BANKFULL BOUNDARY Y PROPOSED TOP OF BANK A)i `I PROPOSED SIDEWALK I \ I ill PROPOSED VEHICLE BRIDGE APPROX 40- WIDTH / GI - CURR NTG I ING DOES NOT INCLUDE BASE FLOW / INNER -BERM CHANNEL, AS PROJECTS CURRENTLY IN PRELIMINARY DESIGN I> 1$O 1�a 1� I m C ITI �1 I L � I I PROPOSED BUILDING ENVELOPE N ` 1 f o \ Exisiting Condition Score (ECS) 0.06 Proposed Condition Score (PCs) 0.35 Change in Functional Condition (PCS- ECS) 0.29 Percent Condition Change 183% Approx. Existing Stream Length (ft) 750 Approx. Existing Non Jurisdictional Stream Length (ft) 100 Approx. Existing lunsditional Stream Length(ft) 650 Approx. Proposed Stream Length (ft) 900 Approx. Proposed Non Jurisdictional Stream Length (ft) 0 Approx. Proposed Jurisdictional Stream Length (ft) 900 Additional Stream Length (ft) 250 Existing Functional Foot Score(FFS) 39 Pro posed Fu nctional Feat Swre (FFS) 315 Proposed FFS- Existing FPS 2]6 Functional Change l%) ]08% Site Information and Performance Standard Stratification Project Name: UT Dante Branch Reach ID: 1 Restoration Potential: Level5-Biology Existing Stream Type: Gc Proposed Stream Type: C Region: Piedmont Drainage Area (sgmi): 1 Proposed Bed Material: Gravel Existing Stream Length (ft): 750 Proposed Stream Length (ft): 900 Stream Slope (%): 1 Flow Type: Perennial River Basin: Catawba Stream Temperature: Warmwater Data Collection Season: Winter/Spring Valley Type: Unconfined Alluvial EXISTING CONDITION ASSESSMENT Functional Category Function -Based Parameters Measurement Method Hydrology Catchment Hydrology Curve Number Reach Runoff Curve Number Concentrated Flow Points Soil Compaction Hydraulics Floodplain Connectivity Bank Height Ratio Entrenchment Ratio Geomorphology Large Woody Debris LWD Index If Pieces Lateral Stability Erosion Rate (ft/yr) Dominant BEHI/NBS Percent Streambank Erosion (%) Riparian Vegetation Left Canopy Coverage I%) Right Canopy Coverage (%) Left Buffer Width (ft) Right Buffer Width (ft) Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre) Right Stem Density (stems/acre) Bed Material Characterization Size Class Pebble Count Analyzer (p-value) Bed Form Diversity Pool Spacing Ratio Pool Depth Ratio Percent Riffle Aggradation Ratio Plan Form Sinuosity Physicochemical Temperature Summer Daily Maximum ('F) Bacteria Fecal Coliform (Cfu/100 ml) Organic Carbon Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (nri Phosphorus Total Phosphorus(mg/L) Biology Macros Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity QO'q- O� ` Roll Up Scoring Field Index Value Value Parameter Category Category Overall Overall O� QJ [7� O� V 75 0.13 0.13 0.13 Nat Functioning N. 0.00 0.00 Functiotning 0.06 Not Functioning �O� S��JG�''`� J� CIO OOV r 1.5 FALSE 0.02 0.18 Not Functioning 3 0.02 0.5 0.2 0.20 H/M 0.3 > 6- 0 a 40 0.05 50 0.58 0.33 50 0.58 0.07 } m 15 0.07 Z O 0- Z W Z p F U ~ H W a Y U J U to Of y LU Of U O N 0 W tl � N 8 FALSE 1.2 FALSE 80 Need Slope 1.1 FALSE (1J a0 N N N N N a- N o a JJJ Z c N PROPOSED CONDITION ASSESSMENT Roll Up Scoring Functional Category Function -Based Parameters Measurement Method Field Value Index Value Parameter Category Category Overall Overall Hydrology Catchment Hydrology Curve Number 85 0 0.00 0.00 Not Functioning Reach Runoff Curve Number Concentrated Flow Points Soil Compaction Hydraulics Floodplain Connectivity Bank Height Ratio 1 1 0.92 0. Functioning Entrenchment Ratio 3.5 0.83 Geomorphology Large Woody Debris LWD Index 1.00 0.84 Functioning 0.35 Functioning At Risk H Pieces 30 1 Lateral Stability Erosion Rate (ft/yr) 0.1 1 0.82 Dominant BEHI/NBS L/L 1 Percent Streambank Erosion(%) 10 0.64 Riparian Vegetation Left Canopy Coverage (%) 90 0,99 0.70 Right Canopy Coverage (%) 90 0.99 Left Buffer Width (ft) 35 0.41 Right Buffer Width (ft) 35 0.41 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Lek Stem Density (stems/acre) Right Stem Density (stems/acre) Bed Material Characterization Size Class Pebble Count Analyzer (p-value) Bed Form Diversity Pool Spacing Ratio 4 1 0.67 Pool Depth Ratio 2 1 Percent Riffle 60 0 Aggradation Ratio Plan Form Sinuosity 1.25 1 1.00 Physicochemical Temperature Summer Daily Maximum (°F) Bacteria Fecal Coliform (Cfu/300 ml) Organic Carbon Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg(L) Phosphorus Total Phosphorus(mg/L) Biology Macros Biotic Index EPT Taxa Present I Q ~ � m W = W Z z Q ii F_ q LU m LLj LU ��_ 2Eo U) E J 0_ zLu Qo O 0 H L �0 ~� ~ I__ m �z Y C9 Q LU Z of M �v W 45 M1 O w 3mm� `vu a4a� SCALE AS SHOWN Fish North Carolina Index of Biotic Integrity DATE: 06/W/2022 HORIZONTAL SCALE: 1"=40' PROJ: FLA-2200811.00 ISSUED FOR: PERMITTING AND REVIEW DWG: 0 20 40 80 im 01ro sec era Is SHEET: 5 of t7 (1" = 40' HORIZ.)