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HomeMy WebLinkAbout20011043 Ver 2_Mitigation Information_20091130NO- os stem Ai enient PROGRAM October 28, 2009 To: John Dorney - DWQ FROM: Marc Recktenwald - EEP L Nov 3 0 2009 WETLANDS AND sio R1WWATE BRACE, RE: Riparian Buffer and Nutrient Offset Mitigation Verification for Smith and Austin Creeks Stream Restoration - Wake County (Meuse 01) DWQ# 01-1043 By memo dated June 1, 2009 (attached), Cyndi Karoly - NCDENR-DWQ - 401 Oversight and Express Permitting Unit, requested that the Ecosystem Enhancement Program (EEP) verify the amount(s) of Riparian Buffer Mitigation and/or Nutrient Offset Credit the subject site would be able to provide. The memo identified one primary area of concern: 1. It appeared portions of the buffers were less than 50 feet wide. Response: Areas of riparian buffer determined to be less than 50 feet wide along the Smith and Austin Creeks project were assessed using GIS and are depicted as orange polygons on the attached figure. In addition, there were two buffer areas that extended beyond 200 ft wide (depicted as yellow polygons on the figure) and are thus similarly not eligible for buffer credit. The remaining area that exists outside of the project stream channels and within the project conservation easement is eligible for riparian buffer restoration credit. Based on this information, the Debit Ledger will list this site with 27.7 Riparian Buffer Mitigation Units. Cc: Cyndi Karoly - NCDENR-DWQ - 401 Oversight and Express Permits Unit NCDENR North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-047 6 / www.nceep.net NN<DENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Governor Director June 1, 2009 TO: Suzanne Klimek - NCEEP Jeff Jurek - NCEEP FROM: Cyndi Karoly - 401 Oversight and Express Permits Unit C RE: Buffer Mitigation Site Evaluations Smith and Austin Creeks - Wake County (Neuse 01) DWQ #01-1043 Site Visit: 4/14/09 EWK Contact Person: Eric Kulz Dee Freeman Secretary The Smith and Austin Creeks site consists of approximately 11,000 linear feet of stream restoration in an urban setting. The Year 6 monitoring report for the project does not indicate the amount of riparian buffer credit proposed for this site. The Year 6 Monitoring Report states that the overall vegetation density is 835 stems per acre, and all vegetation plots exceeded the target density of 320 stems per acre. Planted trees appeared healthy, and diversity was acceptable. The easement did not appear to be 50 feet wide throughout the site. Encroachment in the easement has occurred along the golf course and the soccer fields. The easement was marked with signs at the site of the site visit. ITEMS TO ADDRESS: Please provide a total amount of buffer credit to be generated on this site. This will require verification of the easement widths and planted area widths. It appeared that portions of the buffers were less than 50 feet wide. cc: Matt Matthews 401 OversghtlExpress 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: 919-733-6893 Intemet: http;l/h2o,enr,state.nc.us/ncwetands/ NorthCarofina ;Vatura4 An Equal Opportunity 1 Affirmative Action Employer Smith and Austin Creeks Project Reach ID's (breaks depicted in yellow) Legend X EasementCOrnerS1 ?;% SmithAustin Easement MAP ChannelPolygons ChannelCenterline t ?i .? ? t `? ` ?[f? '? * } ?'? H! + try a. 50ftBufferFromChannelEd a ?~ '? r ? '" y E' 4`" ' NarrowBufferUnder50ft XF!, BufferBeyond200ft .? I ' r s AMC { l 1 # ? ? s? Tu?t ?Y r t •rR. •? ? ?r 4qp x.., i? X Y i giw r' z. y R 4113 fA AA I?V: 9 4 r ^ ?! 500 1,000 2,000 Feett° >r rr' ,? min 4_vt_Z4.,