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HomeMy WebLinkAbout20090693 Ver 1_More Info Received_2010032209- OLP o13 Danny Smith NC DWQ Wetlands and Stormwater Branch NPS Assistance and Compliance Unit 1617 Mail Service Center, Raleigh NC 27699-1617 Subject Property: 9508 Barton's Creek Road UT to Falls Lake 030401,27-(5.5) WSIV, B, NSW,Ca March 20, 2010 MAR2220I0 W??RnUAUTY WETLANDS AMD- S1gs MA*i NWrh i. Diffuse flow plan for drainage pipes 1. Remove all drain pipes from water. Corrugated drainage pipes will be buried connecting to three pipe drainage sections, location described in the map attached. Two of the diffused drainage ditches pipes located under the driveway and will be at least ten feet long, five feet wide, three feet deep and eighteen inches below the surface of the ground. One of the dispersion ditches located at the end of the wall will be fifty feet long, five feet wide, three feet deep and at least eighteen inches below the surface of the ground. The corrugated pipe will have dispersion holes cored in it to allow the water to seep into a gravel bed non-forcibly which will be placed in the gravel dispersion ditch. The cored pipe will also have a sediment sleeve over sections with holes and a cap at the end of the pipe to allow water to disperse properly (see attached site plan). 2. Dual-Track Easement All gravel will be removed from road within the repair buffer. Grass will be planted three feet from toe of wall. A three foot wide gravel track will be installed at the end of the grass strip, and then a five foot grass swath will be planted at the end of the gravel track. The second three foot wide gravel track will be installed at the end if the five foot grass swath, then the final three foot wide grass swath will be planted at the end of the second gravel track. (see attached plan) 3. Riparian Zone Planting 1. Fourteen feet from the toe of the wall toward the pond the riparian restoration planting will begin. 123 (One hundred twenty three) trees, 117 (one hundred seventeen) hedges and Car ex Stricta (sedge) will be planted in accordance with the attached plan. The tree types and numbers will be as follows: a. 17 Mockernut Hickory Trees b. 17 Black Walnut Trees c. 17 Swamp Chestnut Oak Trees d. 18 Eastern Redbud Trees e. 18 White Fringetree, Old Man's beard Trees f. 18 Flowering Dogwoods Trees g. 18 Bladdernut Trees h. 29 Common Alder Shrubs i. 29 Virginia Willow Shrubs j. 29 Dwarf Azalea Shrubs k. 30 Red Chokeberry Shrubs All trees and shrubs are marked for planting on attached plan. 4. Schedule 1. Diffused flow restoration and dual track easement will begin 60 days after acceptance of this work is given by the NCDWQ. Grass and Carex Stricta will be planted after diffused flow drainage and dual track easement is completed. All trees and shrubs will be planted in the month of November, when weather is cooler and the tree will have a better chance for survival. This schedule is dependent on the acceptance time of this plan by NCDWQ, so adequate time is given for work to be accomplished. Thank You for all of your help, Christopher Mitscherlich Jennifer Mitscherlich i II I tD C ~ • ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ i r~ va ~ ~ /q~ a.~a~~ ~ ~ ppy.q A .4J..fi ~ 4 • ~ d4I ~ ~ ~ ~ ~ ~ ~ ~ j n pip g"~~ Uf a Wet M ~ Me ~y ~ ~ e 1 ° i j ~ 6ebl w1° qq `i a v ~ ~ v e q.+ ,y a VWr 'R~ e~m ply p~ ~ a~q +~q~ ~y p~ " e ~ ww Mr g~p~~• ~ ~ pp''~~ oe.~e B 1 ° i b ! /i! Wn '°"'1 l ' i y~ 4I 4„Ae ewoe V .e+e eeae® rM C? 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