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Home My WebLink About20130577 Ver 1_Closeout Letter_20190717ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director Division of Mitigation Services Attn: Melonie Allen 1652 Mail Service Center Raleigh, NC 27699-1652 (via electronic mail) NORTH CAROLINA Environmental Quality July 17, 2019 Re: Little Lick Creek Buffer Restoration Site DMS ID #92542 —CLOSEOUT ACCEPTANCE LETTER Dear Ms. Allen, DWR Project # 2013-0577 Durham County On May 30, 2019, the Division of Water Resources (DWR) received a close-out packet from you on behalf of the Division of Mitigation Services (DMS) requesting approval to close-out the subject site from monitoring and maintenance of the riparian areas. On July 16, 2019, Katie Merritt with DWR, visited the subject site to assess the vegetation and overall site conditions. Representatives from DMS were also present. An asset map and asset table, both initialed by Ms. Merritt on July 16, 2019, are attached. DWR has reviewed the close-out request and the following is approved: River Basin/Service Mitigation Credit Mitigation Mitigation Distance from Area Type Type Ratio Units/Credit stream *Buffer 1:1 2.43 acres Neuse 03020201 Upper Falls Lake WS Riparian Restoration OR Nutrient 105,972 ft2 Top of Bank -100' 1:1 2.43 acres Offset (5,529.76 lbs -N; 356.161bs-P Neuse 03020201 Riparian Nutrient 1:1 5.07 acres 101-200' Upper Falls Lake WS Restoration Offset only 11,525.92 lbs -N; 742.361bs-P credits can be used for either buffer mitigation or nutrient offset, but not both Please feel free to contact Ms. Merritt at (919) 707-3637 if you have any questions regarding this correspondence. Sincerely, *Karen Higgins, Supervisor KAH/km 401 & Buffer Permitting Branch ATTACHMENTS: Asset Table, Project Asset Map cc: File Copy —Katie Merritt (DWR) North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 Asset Table ^Calculated in accordance with DWR Memorandum. *These areas are between 0-100 feet from top of bank and will either be used for Riparian Buffer Mitigation OR Nutrient pound reduction, not both. **Additional nutrient removal potential if used in lieu of Riparian Buffer square footage. ***This area is between 100-200 feet from top of bank and can ONLY be used for Nutrient Offset pound reduction. + During the Year 5 (2018) annual monitoring report review, an error in credit area calculation was discovered which resulted in a slight reduction of credit area (-359 ft' of Riparian Buffer credit and -548 ftz of Nutrient Offset credit). The areas listed in this table have been revised to reflect the existing project assets. Success Criterion Project Component Success Criteria per Approved Mitigation Plan Mitigation Credits^ Riparian Buffer/Nutrient Offset 320 planted hardwood stems/ac Type Riparian Buffer 8 vegetation plots Nutrient Offset vegetation plots met success based on 220,882 ft' (5.07 acres) [minimum, see ** below] Totals 105,972 ft' (2.43 acres) stems shy of meeting success criteria based Nitrogen: 11,525.92 lbs Phosphorous: 742.36 lbs on planted stems alone, and plot 7 was just Projects Components one stem shy; however, when including j Restoration/ Restoration Pounds of Pounds of Proect � Restoration Acreage' Mitigation Nitrogen Phosphorus Component/ Equivalent Ratio Treated Treated Comment Reach ID Over 30 Over 30 Years Years *Riparian Restoration 105,972 ft' 1:01 **5529.76 **356.16 Invasive/nuisance Buffer lbs lbs species removal and planting with 2.43 acres native hardwood trees. ***Nutrient Restoration 220,882 ftz 1:01 11,525.92 742.36 lbs Offset (5.07 acres) lbs ^Calculated in accordance with DWR Memorandum. *These areas are between 0-100 feet from top of bank and will either be used for Riparian Buffer Mitigation OR Nutrient pound reduction, not both. **Additional nutrient removal potential if used in lieu of Riparian Buffer square footage. ***This area is between 100-200 feet from top of bank and can ONLY be used for Nutrient Offset pound reduction. + During the Year 5 (2018) annual monitoring report review, an error in credit area calculation was discovered which resulted in a slight reduction of credit area (-359 ft' of Riparian Buffer credit and -548 ftz of Nutrient Offset credit). The areas listed in this table have been revised to reflect the existing project assets. Success Criterion Project Component Success Criteria per Approved Mitigation Plan Success Criteria Met Riparian Buffer/Nutrient Offset 320 planted hardwood stems/ac Yes - Stem counts average of 338 planted 8 vegetation plots stems/acre across the Project. 5 out of 8 vegetation plots met success based on planted stems. Plots 2 and 3 were both 3 stems shy of meeting success criteria based on planted stems alone, and plot 7 was just one stem shy; however, when including natural recruits of green ash and willow oak in Plot 2, winged elm in Plot 3, and green ash and red maple in plot 7, these plots were well above success criteria. 71- ` t 4 s+ +- • r k J s UC4"k i YI r 7 ) �? _� Legend �• - L ,C2 Easement Boundary = 12.14 acres Streams Water Conveyances / Riparian Buffer Restoration = 2.43 acres Nutrient Offset Credit Area = 5.07 acres No Credit Area = 0.19 acres .�.. (` :err i;, C �` Existing Mature Vegetation (No Credit) z: 4.13 acres ' Sewer Easement (No Credit)= 0.50 acres Feet 0 50 100 200 300 �O ' - ,' hvject Components and Mltfgation IInits Table ►y _ 1 14 Type Rtpalian Bulrer �nnent OIIut ` 1 ( zzo Teras 105972 R (2.Ct 220A2z Br(5.07 «m) [>� see '^ 2In, "•nrogev 11,Sx40s POosp►oroar. 7/2 hs t, Ww }{• Prot— Component Proj- Rntonnan' Pounds or NltsoBeu Poems of i'. ', C'omponenr.� Rnlontbn Re0 .lBl.. T -60-30T-60-30 Phmpf T-6 C—at Reach Egar.tent A—,,*RnBe• �� Years 0-30 Yens ! 105.972 $1 le—a • ;r„a ' •p psieo Bu(Y RestMntion ((243—)1�1 x•3523 IRs ••356Ibs ,,—earc ]and • • °•aNutsitat Otfsn Ra, --220.882 $• 1' 1 I t.5.a IRs 7421bs plmlmg mth aatlsx P .r (5.07 acres) hardauod trees. fff ^Caeulaed m accordance xnh DWR Memoemd— `. •These a— aze b— o-100 fees bout top of baa and uw dura be —d for Ri xm Butler Nbriptim OR N'otsimt Pound [(" reductsm out both .( • Aeld"Mal mtdmt rewmal Posmrtat if wad in line ofAipanm Bofic square l tape Mpg •••This area n b-- 100-200 feet fi>ms top of bank am em ONLY W —d for MNimt Off- po—d md—iou. " . Dmwe We Year S (2018) arcual womlern* -Post r 1-- m mos m credit arta nIN1aRm ant di—need sstkt resamd m t slight reducnm of credit area (-359 $1 of Rsparsao Buffer tcdi[ m0 -<38 R' ofNharieter 6ftsH crMir). Tb ams fisted m this a Z!'L— table hast been to refteet the mvutin 8 PtoiaT assets Dwn. by. 211s A— ' (/ (.19)2'NCxrb03 % (P18)21SC27 PROJECT ASSETS LITTLE LICK CREEK SITE DMS PROJECT NUMBER 92542 KRJ/CLFlPHP FIGURE a 2 Date: October 2018 Axiom Environmental, Inc. Durham County, North Carolina Prjeft „/ 12-004.19 /