The URL can be used to link to this page

Home My WebLink About20080499 Ver 3_NOV Response_20171208� o MPILUS P I L T E N V I R N M E N T A L, I N C December 8, 2017 U.S. Army Corps of Engineers Attn: Mr. David Bailey Raleigh Regulatory Field Office Wilmington District U.S. Army Corps of Engineers 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 North Carolina Division of Water Resources Attn: Ms. Sue Homewood Winston-Salem Regional Office - 401 Wetlands Unit 450 West Hanes Mill Road Winston Salem, North Carolina 27105 Reference: Response to Notices of Violations Individual 404/401 Permit — SAW -2013-00556, DWR #08-0499v3 Triad Business Park Old Greensboro Road Extension Kernersville, Guilford County, North Carolina Pilot Project 1010.1 Dear Mr. Bailey and Ms. Homewood: Mr. Brian Hall, TDO Land Holdings, LLC, received Notices of Violations (NOVs) from the U.S. Army Corps of Engineers (USACE) dated September 28, 2017 and the North Carolina Department of Environmental Quality Division of Water Resources (NCDEQ-DWR) dated September 20, 2017 in regards to the Department of Army (DA) Individual 404 Permit authorization dated April 4, 2016 and the NCDEQ-DWR 401 Individual Water Quality Certification 004050 dated February 25, 2016. The applicant provided electronic mail (e-mail) responses dated September 20 and 22, 2017 and a letter dated September 23, 2017 to address specific concerns associated with de -watering down -gradient waters due to the use of a diversion ditch. The applicant provided a letter dated October 5, 2017 that provided information addressing the causes to the specific violations and a proposal to prevent and avoid further non-compliance. On November 3, 2017, the applicant provided a detailed restoration plan and information to address specific compliance concerns. The USACE and NCDEQ-DWR requested clarification of the restoration plan and information to address compliance concerns in e-mails dated November 6 and 9, 2017, respectively. On behalf of the applicant, TDO Land Holdings, LLC, the purpose of this letter is to provide clarifying information regarding the restoration plan. PO Box 128, Kernersville, NC 27285 www.pilotenviro.com Pilot Project 1010.1 December 8, 2017 USACE Comment 1 (Response to USACE Action C): In order to document aquatic life presence in the previously dewatered 304 linear foot section of stream downstream of the permitted crossing, provide an aquatic life assessment of both the previously dewatered section of stream AND the stream reach below the point at which diversion water had re -joined the stream channel. For this assessment, use the NCSAM Guidance for Conducting an In -stream Aquatic Life Assessment (see attached). For each reach assessed, the attached checklist may be used; however, if more than 1 individual of any taxa are found, please note the number of individuals of each taxa on the checklist. As an alternative, you may propose to provide compensatory mitigation for the temporal loss of function of the 304 linear foot reach dewatered as a result of this project. Applicant Response: Pilot visited the site to complete an aquatic life assessment on November 22, 2017. The assessment was conducted on the stream reach that was temporary de -watered and a similar length of stream reach immediately down -gradient of the area temporarily de - watered in accordance with NCSAM Guidance for Conducting an In -stream Aquatic Life Assessment (attached). The assessment yielded results that both stream reaches are generally consistent with current aquatic life function. Therefore, the applicant is not proposing compensatory or other mitigation for the temporal loss of stream hydrology. USACE Comment 2 (Response to USACE Action A and B): Thank you for the detailed As -built survey and impact comparison. However, there appear to be two streams shown on Sheets CIA, C1.2, C1.3, and C1.4. Please revise the plan sheets to clearly show the stream channel as shown on the originally permitted plans. If the channel labeled "TOB" currently exists, please explain the difference between the "TOB" stream and the stream shown on the originally permitted plans. For stream restoration purposes in areas currently within impacted areas, the stream channel bed and banks and grade and contour that should be used is the stream shown on the originally permitted plans; please revise the plans accordingly. If the restoration reach downstream of the crossing will require natural channel design structures to ensure stability and function post - restoration, please include those structures in the design. NCDEQ-DWR Comment 5: Please modify the restoration of the channel below the riprap apron to incorporate a natural channel design. Applicant Response: The As -built survey and Restoration Sheets C1.1, C1.2, C1.3 and C1.4 show the initial surveyed stream from original permitted plans and an inferred stream from topographic information obtained from the surveyor. The inferred stream from topographic information has been removed from the attached As -built survey and Restoration Exhibits for clarification. The restoration plan submitted to agencies on November 3, 2017 was based upon the initial surveyed stream from original permitted plans. The restoration plan includes matching natural channel grade, meanders and slope to pre-existing conditions. Following obtaining the above, the restored stream will be stabilized with live stakes and matting. Following restoration, the proposed grade will be approximately 0.6 feet of drop along 39 linear feet of stream. Based Pilot Project 1010.1 December 8, 2017 upon the final anticipated channel slope and above summarized restoration efforts, it is the opinion of the applicant that in -channel natural stream structures are not necessary. USACE Comment 3 (Response to USACE Action A and B): the "Log check Dam #2" profile on Sheet C1.4 shows a —10 ft. vertical difference in the TOB height on either side of the channel. Is this a typo? Applicant Response: The initial surveyed stream in this location was along the toe slope of a steep side slope embankment. Therefore, to avoid side slope failure, the design includes stabilization of additional area outside of the restored stream bank with matting. USACE Comment 4 (Response to USACE Action A and B): In order to maintain vertical stability of the stream channel upstream of the crossing, a 1 ft. sill (relative to the culvert invert elevation) is likely necessary at the mouth of the culvert. This was discussed during a phone call with Pilot Environmental but not included on the plans. Applicant Response: The applicant is not proposing pre -charging the culvert with one foot of sediment. Based upon the location of the first up -stream grade control structure, the drop of relative elevation between the bottom elevation of the device and buried culvert and the lack of pre -charging the culvert with sediment, it is the opinion of the applicant that a sill is not necessary at the mouth of the culvert. USACE Comment 4 (Response to USACE Action A and B): Please provide additional information on soil preparation in the wetland restoration areas. Has disturbance in these areas resulted in compaction or removal of topsoil such that the soils are not conducive for planting appropriate wetland species? If so, please provide details on how compaction, organic matter, etc. will be addressed prior to planting. NCDEQ-DWR Comment 3: The restoration plan for the wetland areas must include specifications for returning the areas to natural grades and to address compaction or removal of topsoil etc. Applicant Response: The restoration plan has been amended to include tillage and soil amendments as necessary based upon field conditions during the wetland restoration. USACE Comment 5 (Response to Corps Action D): The Corps is amenable to authorizing the structure/fill as -built, including the proposed changes to the rip rap pad and stream/wetland restoration conceptual design, at such time as the stream/wetland restoration design is approved and constructed/planted. Once complete, your restoration -area proposed monitoring plan is acceptable, although additional annual reports will be required for years 2-5 post -completion. Note that this monitoring requirement can be ended prior to 5 years upon permittee request if the Corps agrees that restoration trajectory is acceptable and that subsequent monitoring is unnecessary. Pilot Project 1010.1 December 8, 2017 NCDEQ-DWR Comment 2: The Division will require a minimum of 3 year monitoring period for the restored areas. Applicant Response: The applicant acknowledges agency monitoring requirements of the stream and wetland restoration. USACE Comment 6 (Response to Corps Action A and B): The Corps agrees with your proposal to amend the recorded conservation areas. These amendments should include within the conservation areas all restored wetland and stream areas, except narrow access corridors on either side of the crossing where future culvert or roadway maintenance may necessitate site access. The draft amended conservation area map and associated recordable language must be submitted to the Corps for approval within 30 -days of completion of the wetland and stream restoration work. Within 30 days of Corps approval, the amended conservation area map and associated recordable language must be recorded by Guilford County and a copy provided to the Corps. Applicant Response: The applicant acknowledges the requested timing of the amended conservation area map to the USACE for approval and for recording with the Guilford County Register of Deeds. NCDEQ-DWR Comment 2: Please provide documentation that confirms that the Town of Kernersville and the Division of Energy, Mineral and Land Resources (DEMLR) will accept the reduced length of the riprap apron. Applicant Response: Please find attached documentation from the Town of Kernersville and NCDEQ-DEMLR that confirms acceptance of reduced length of riprap apron. NCDEQ-DWR Comment 4: The proposal includes removal of the temporary skimmer basin and restoration of wetlands within that area. Has DEMLR released this area for closeout? If not, please provide a restoration plan that includes work to be done in phases and indicate when this area is likely to be able to be restored. Applicant Response: The attached amended restoration plan includes construction sequencing for the restoration as it relates to timing of close out/removal of sediment and erosion control devices. Pilot Project 1010.1 December 8, 2017 The applicant is requesting agency review and approval of this information to bring the proposed project into compliance with DA Individual 404 Permit authorization dated April 4, 2016 and the NCDEQ-DWR 401 Individual Water Quality Certification 004050 dated February 25, 2016. If you require additional information to complete your review, then please contact us at (336) 310- 4527. Respectfully submitted, PILOT ENVIRONMENTAL, INC. _114 Bradley S. Luckey, PWS Project Manager Michael T. Brame, PWS Principal Attachments: NCSAM In -stream Aquatic Life Assessment As -Build Survey Restoration Plan Town of Kernersville, e-mail dated December 7, 2017 NCDEQ-DEMLR, email dated December 7, 2017 I ((zZ 1(7 !s/ Z6 ' 4e M (J,,c A- 12. Aquatic Life — assessment reach metric (skip for Tidal Marsh Streams) 12a. ❑Yes ❑No Was an in -stream aquatic life assessment performed as described in the User Manual? If No, select one of the following reasons and skip to Metric 13. ❑No Water ❑Other: 12b. ❑Yes ❑No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check all that apply. If No, skip to Metric 13. 1 >1 Numbers over columns refer to "individuals" for Size 1 and 2 streams and "taxa" for Size 3 and 4 streams. �. ❑Adult frogs ❑ ❑Aquatic reptiles ❑ ❑Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) ❑ Beetles (including water pennies) ❑ Caddisfly larvae (Trichoptera [T]) ❑ ❑Asian clam (Corbicula) Q. ❑Crustacean (isopod/amphipod/crayfish/shrim p) jq ❑Damselfly and dragonfly larvae ❑ ❑Dipterans (true flies) ❑ ❑Mayfly larvae (Ephemeroptera [E]) [jMegaloptera (alderfly, fishfly, dobsonfly larvae) g E]Midges/mosquito larvae ❑ ❑Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea) ❑ ❑Mussels/Clams (not Corbicula) ❑ ❑Other fish ❑ ❑Salama nders/tadpoles ❑ Snails Stonefly larvae (Plecoptera [P]) ❑Tipulid larvae ❑ ❑Worms/leeches Metric 12 is used for all streams except Tidal Marsh Streams. This metric is used in the determination of the Baseflow component of the three Class 1 functions in Size 2, 3, and 4 streams and the Aquatic Life Tolerance component of the Class 1 Water Quality function of all streams. Metric 12a If the assessment reach is "too large or dangerous" to sample, the assessor should have selected "Yes" for Metric 9 (p. 75) and will then skip Metric 12. In this case, the Rating Calculator will default to giving this metric a rating of "High." Circumstances aside from prohibitive size and danger may prevent an aquatic life assessment from being performed. In such cases, the assessor should select "No" for Metric 12a and provide a reason, either select "No Water" or select "Other" and write the reason in the blank provided. In this case, the Rating Calculator follows an alternative path for generating the function rating that excludes this information. The aquatic life assessment is anticipated to be part of the 15 -minute NC SAM assessment. Guidance for conducting an in -stream aquatic life assessment sufficient for the purposes of NC SAM is provided as follows. NC SAM Guidance for Conducting an In -stream Aquatic Life Assessment The aquatic life assessment need not be lengthy, but should be thorough (sample all available habitats). The assessment should begin in riffles, if present, and proceed to other habitats (in the order of pools, snags and logs, leaf packs, macrophytes, root mats, hard substrate, and banks) as time allows if not finding aquatic life in riffles. NC Stream Assessment Method (NC SAM) v2.1 99 Section 4: Field Evaluation Process 12. Aquatic Life — assessment reach metric (skip for Tidal Marsh Streams) 12a. ❑Yes ONO Was an in -stream aquatic life assessment performed as described in the User Manual? If No, select one of the following reasons and skip to Metric 13. ONO Water ❑Other: 12b. ❑Yes ❑No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check all that apply. If No, skip to Metric 13. 1 >1 Numbers over columns refer to "individuals" for Size 1 and 2 streams and "taxa" for Size 3 and 4 streams. ❑ ❑Adult frogs ❑ ❑Aquatic reptiles ❑ ❑Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) ❑Beetles (including water pennies) ❑Caddisfly larvae (Trichoptera [T]) ❑ ❑Asian clam (Corbicula) ❑ ZCrustacean (isopod/amphipod/crayfish/shrimp�> ❑ ❑Damselfly and dragonfly larvae ❑ ❑Dipterans (true flies) ❑ ❑Mayfly larvae (Ephemeroptera [E]) ❑ ❑Megaloptera (alderfly, fishfly, dobsonfly larvae) ❑ []Midges/mosquito larvae ❑ ❑Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea) ❑ ❑Mussels/Clams (not Corbicula) ❑ ❑Other fish c ❑Salama_ nders/tadpoles ❑ 51Snails ❑ ❑Stonefly larvae (Plecoptera [P]) ❑ ❑Tipulid larvae ❑ ❑Worms/leeches Metric 12 is used for all streams except Tidal Marsh Streams. This metric is used in the determination of the Baseflow component of the three Class 1 functions in Size 2, 3, and 4 streams and the Aquatic Life Tolerance component of the Class 1 Water Quality function of all streams. Metric 12a If the assessment reach is "too large or dangerous" to sample, the assessor should have selected "Yes" for Metric 9 (p. 75) and will then skip Metric 12. In this case, the Rating Calculator will default to giving this metric a rating of "High." Circumstances aside from prohibitive size and danger may prevent an aquatic life assessment from being performed. In such cases, the assessor should select "No" for Metric 12a and provide a reason, either select "No Water" or select "Other" and write the reason in the blank provided. In this case, the Rating Calculator follows an alternative path for generating the function rating that excludes this information. The aquatic life assessment is anticipated to be part of the 15 -minute NC SAM assessment. Guidance for conducting an in -stream aquatic life assessment sufficient for the purposes of NC SAM is provided as follows. NC SAM Guidance for Conducting an In -stream Aquatic Life Assessment The aquatic life assessment need not be lengthy, but should be thorough (sample all available habitats). The assessment should begin in riffles, if present, and proceed to other habitats (in the order of pools, snags and logs, leaf packs, macrophytes, root mats, hard substrate, and banks) as time allows if not finding aquatic life in riffles. NC Stream Assessment Method (NC SAM) v2.1 99 Section 4 Field Evaluation Process triaddesigngroupOO Architecture Engineering Interior Design Group, P .24n5 4807-C Koger BoulevardDISTURBANCE Greensboro, NC 27407 Telephone T -218-8282� Facsimile 336-218-8010 -designgroup.comADDITIONAL www.triadTOE` D� T-rOOaZMWQia�0od� igyG NC Architecture Reg. 50709 .=C- NC Engineering Lic. -1108TEMPORARY C es��m � 1Ipn1I �N / .gOO•�1/DISTURBANCE ...00. �CBATA ,F SEAL 9 \ 1,I 1994DISTURBANCE=45 p000000000000LESS °°°��ARPER ° °�N�� c J0oi�°OWETLAND oQC �O O O o oTURBANCE a SEALPERMANENT oDIS102 °O o�0 30521 o o O �o O 2° O OTEMPORARY C o o °G'N� o�\°SCALE: oO ° ° °°0000000000000 PROFESSIONAL OF RECORD: MATTHEW JOHNSON, . W. P.E. LU CU cc LLA coU WWETLAND W DD oB 0Cq W919 cc ZWAS LU LLA0.54 I U U I T_x 1 O iNHNc(WrQU0L0QJ3:(a3a3J�NcN0LNO��I Mk Date Description Revisions N STREAM DISTURBANCE3Q9cCOvl6LFWr C PLANo W 0 0 O C N Date: JANUARY 201 d: Drawn: Check: Job Number: 16-092 z 5heet:0z 1 2WW 3 4 5 WWWWWW WWWWWW WWWWWW WWWWWWW QO WWWWWWW/ WWWWWW ��WWWW WWWWWW WWWWWW WWWWW WWWWW WWWWW WWWWW WWWWWVW/ WWWWW�W' /WWyWWWWW WWWWWW WWWWWW WWWWWWW WWWWWWW WWWWWW WWWWVWW� WWWW�WWW WW�VVVVW �WWWWWWWWWWWW WWWWW WWWWWWW WWWWWW� WWWWWW� WWWWWWWW WWWWW WWWWW WWWWWWW , / ADDITIONAL TEMP WETLAND / /�yWWWW�-� WWWWWWW /WWWWWWW WWWWW� WWWWWW AND STREAM yWWWWW,/ WWWWWW WWWWWW / WWWWW WWWWW DISTURBANCE Q /WWW WWWWW/ WWWWWI �WWWWW WWWW/ WWWWW WWW /WWWWWW/ �� • I � +WWWWWWWrk' - // ._ WWWW WWW WWW '^• LESS �WWWWWWWW � /PMANENTERWETLAND VW c/l^4i�Ot )�M(\�•/�,�VVV/ WWW WWW WW WWW WWW WW•Y •WWWW�1` .00 ��II ^�1 I•V \ OQ ((JIter/ ,O �O /��WWWWWWW //wWWWWWWI .r294 r_'WWWWWWW� �WWWWWWWW / 4WWWWW�W4, WWWWWWK5- . 1�D l 'WWWW ^, DISTURBANCE W WW 507 SF /WWWWWWWW �4Z4D . (l1WWWJWW� U(� - u JD \ W WWW WWWWWWWWW�� WWWWWWWWWWWWWWX WWWWWWWWWWWWWWWW/� WWWWWWWWWWWWWWW/ WWWWWWWWWWWWWWWW/C`�� JD�9f • W WWWWWWWWWyW WWWWWWWWWWWWWWWWyWWWWWWWWQWWW• � 5 WWWWWWWWWWyWW �WWWWWWWWWy WWWWWWWWyW _r \/ WWWWWWWWWWWWWW WWWWWWWWWWWWWWWWWWW/WWWWWWWWWWWWWWWW/ 24A*OWWY ` WWWWWWWWWWWWWWW//. // WWyWWWWWWWW'W�O WWWWWWWWWWWW WDWWWWWWWW' WWWWWWWWQW WWWWWWWWW +2 WWW�WW•WW�yY• WW��WWWWWWWy 0+ WWWWWWWWW\ WWWWWWWW•WyyWYY WWWWWWWWWWyyWW WWWWWWW' WWWWWWWWW2�/ WWWWWWWWi WWWWWWWWWWWWWWWWW" WWWWWWWWWWWWWWW/ V OY56 W / �W/,YT19 �WWWWWWWWWWW WWWWWWWWWWW WWWWWWWWW� �� O' WWWWWWW•WWWWWW•.1✓�v� W \9WWWWWWWWWWWWW WWWWWWWW`Wy WWWWWWWWW// WWWWWWWWWWWWWWWWWWWWWW( � ADDITIONAL,,Z 5• PERMANENT WETLAND WWWWWWWWWWWWWWWWWWWWW�WW/� WWWWWWWWWWWWW/WWWWWWWW/// `WWWWWWWW�WWWWWT- y gA'% W 8 Y WWWWWWW WWWWWWWWWvWW\l LESS PERM WETLAND • W'WWWyWWW.WWWYY ••c ACRES WWWWWWWWWWWWWWWWWWWWWWWWWWWWW WW � WWWWWWWWWWWWWWWW /1023 ' JOE 806.74 ��WWWWW /Q 244 1• TOP �•WWW PERMANENT WETLAND 152 SF' E yWWWWWaWWQIn4S DEDISTURBANCE=0.54 806.74 WY CP TOP 34WWWWWWWWWWW LqI�QVWWWWWWWWWWjV /W �N LWWWWWWWWWWWWWWWIY�/� ��WO�O DISTURBANCE 4 OtO "W.9 ,`�f0WWWWWWWWWWWWWWWWWWWWyO WWWW WWWWWWWWWWWWWWWWVW jQ �ma`PWWWWWW P'j�l W �4LGJam O C/WW/WWWWWWWWWWWWW /�/WWWWWWWWWWWWWWWWW 546 SF W W W EXISTING CHANNEL ELEVATION-WTOrWW f OWWWWWWWWWWWO�0 98.54 �AE��U \\ r� l WWWWWWWWWWWWWWWWWWWWWWWWW WWWWWWWWijV�>0, ' �2 TEMP WETLAND YY� 899.52-899.06WWW899 AS -BUILT CULVERT ELEVATION / 42 �� WWWWWWWWWW6V� X \ 99• M/Y AND STREA 899.54 9.77 WETLAND DISTURBANCE=0.10 ACRES � r ///r �WWWWWVWWWWWWo�' —�O0 WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW 'WWWWWVW\ '/' 2414DISTURBANCE X 8�9.� � W / X 1` 899 j w -W WWWWWWWWWWWWWWWW//. / 1026 TE //�I�WWWWWWWWWWW'M // .6 26 TOE 0, WWWWWWWWWWWWWWWWWWWWWW/_• WWWWWWWWWWWWWWWWWWWW/N WWWWWWWWWW/WWWWWWW1 G•-4 WWWWWWWW'WWWWWW 912.0,1, \� ��WWW'WWWWWWWWWW'W \ 2438 01 WWWWWWWWWWWWWWWWWWcU- WWWWWWWWWWWWWWWWW WWWWWWWWWWWWWWWWW�WWW ,�1•'\\ dWWWWWWWWWWWWf�OSn p r --/ WWOWWWWWWWWWWW �/•� 3 BITIONAL \WWWWWWWWWWWWWWWW 9�WWWWWWWWWWWWWWW/. ��WWWWWWWWWWWWWWWWWWWWWWJ 8993T�K TOP WWWWWWWWWWWWWWWWWW• / / � /'/ 4 433 4 TEMP STREAM 40 LF //� WWWWWWWWW•vWWWWWTL WWWWWWWWWWWWWWWW- 433 ,I OS QjI 2 434 0.81 WWWWWWWWWWWWWWWWWWWW.�� .WWWWWWWWWW � T4ENDTOP \WWWWWWWWWWW�I 00.5 � �I��•"V 0WWWWWWWWWWWWWy'o, 8TOEENDTOP .y � WWWWWWWWWWWWWWWWWW•WWWWW✓LW WWWWWWWWW�WWWWWWWWWWWWWWWW /// / OP /WWWWWWWWWWWWWWWWWW � / WWWWWWWWWWyWyyWWWWWWWW/ WWWWWWWWWWWWWWWWWWWWWWW�� WWWWWWWWWWyWWyyWWWWWyWWWWa �gWWWWWWWWWWWWWWWWWyWWWWW\ K. WWWWWWVVWWWWWWWWWWWWyWWWWyWWyWWW o•/ TOP / O9�WWWWLWWWW�� \ TOE/*, _/ / �/ /� /\\\\��\\\ 'WWWWW UO 0 3WWWWW�WWWWWWWWWWWWWWWWWW�\- WWWWWWVWWWWWWWWWWW\WWWJWWW�0 ./ APPROVE- / TEMP STREAM \ //V / yWWWWWWWJyWWyWWW\WWWVWWW�0 � WWWW`WWWWWWW•WWWWWWWWWWW�w� �- // DISTURBANCE TEMPORARY STREAM /WWWWWWWWWWWWWWWWW W WWWWWWWWyWWyWWWWWWWWWW � o 0 '.0, / ./ - — / LF /WWWWWWWWWWWWWWWW/ / 897.6 / // /r PERMANENT STREAM /°WWWWWWWWWWWWWWWWWW I�� ✓ �WWWWWWWWWWWWWWWWWWWWr/� DISTURBANCE=205 LF /•WWWWW•WWWWWWWWWW—Y/ — — — — — — — —— /�� \ WWWWWWWWW \\ ADDITIONAL WETLAND DISTURBANCE C /WWWWW�WWWWWWWWWWWWWWY•/� /" /-` \�� ADDITIONAL V WWWWWW \\/ V�WWWWWWWWWyWW•WWWWWWWWWWWW' / // �WWWWWWWWWyWyWWWWWWWWW✓✓✓ PERM WETLAND PERMANENT DISTURBANCE MANENT DISTURBANCE APPROVED //WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWAWWWWWWW PERMANENT WETLAND DISTURBANC J AND 380 SF NOT BEING USED \� r / � V�ma� \ -n STREAM � �OV -2� DISTURBANCE 0 40' 80' / / /WWWWWWWWWWWWWWWWWWWWWWVVV��WWWWWWWWWWWWWWWWWWW '' \�WWWWWWWWWWWWWWWWWWWWW.W•\ SF ��WWWWWWWWWWWWWWWWWWWWWWWWWWWWW0/7 �,` WETLAND DISTURBANCE /� " — 1 40' /� / vj� � /S/WWWWWWWWWWWWWWWWWWWWT � / APPROVED DISTRUBANCE PROPOSED VS APPROVED CHANGES = 140' UNAPPROVED WETLAND DISTURBANCE 3,073 SF ""O-�o W WWWWWWWWWWW / WWWWWWWW WWWWWWWWWWWWO� WWWWVWWWW/-F� 922 1"40' RECORDED CONSERVATIONTEMPORARY PROPOSED WETLAND EASEMENT RESTORATION LINE 6,390 SF s%� /* CONSERVATION EASEMENT PERMANENT CONSERVATION EASEMENT DISTURBANCE = 683 SF CONSERVATION EASEMENT ADDED DUE 921 •WWWWWWWWWWWWWWWWWWWWWyWWy O// TO TEMP DISTURBANCE = 707 SIF Q O Q WWWWWWWWA� WWWWWW�W AWWWWWWWWWWW•WWWWWWWWW•W WAPPROVED ON$RATI6K, t9S�MffyTWW NET CHANGE IN CONSERVATIONCU ,.•1\ BWWWWWWWWWWWWWWWWWWWW PERMANENT DIRACE .WWWWWWWWWWWWWWWWWWWWWWr � � �•-1--*-"00*,__q��UCTO`N 9 ? s \ .�WWWWWWWWWWWWyWWW --.a�� J � WWWWWWWWWWWWWv^ �Y —/. DISTU6BANC� Q�SF=QFW EASEMENT -'000%, S � = EASEMENT 24 SF OF ADDITIONAL EASEMENT 00 I /� � � 920 wWWWWWWWW �� jWWVWWWWWyny�\ `W^^I^W4DDWT^WAV RECORDED CONSERVATION STREAM DISTURBANCE 205 LF BOCA�LWAD9EDW � �� •'� JD -/piO/4 VD ACTUAL CONSERVATION STREAM / /\� F WWWW DISTURBANCE 205 LF �WWWWWWWWWWWWWWW'WY►�=� �/XQ•WWWWWWWWWWWW /U V-L STREAM DISTURBANCE INCREASED BY i 6 LF ON THE UP STREAM END AND .' � PROPOSED PERMANENT V� W•WWWWW\7\P�Y REDUCED EON THE CWWWWWWWWW_ DOWNSTREAM ND FORA 0 NETWETLAND �Q�� DISTURBANCE oWWWWWWWWWW W CP CHANGE IN STREAM DISTURBANCE TEMPORARY WETLAND � \\WWWWWWWWWW/ ^ / AC = 8.543 9 DISTURBANCE ' 3,747 SF /WWWW/WWWWWWWfiWWWWW � /y /• �WWWWWWWWWW4 �/ ' I / PROPOSED WETLAND RESTORATION 6,018 SF r s�IWyWyWWWW ^�== WWWWWWWWWN O�%: ,- ,� ry ) W RV r-,899.54 � ROPOSEDL L/WWW TREAM /WW \WWWWWWWWWWWWWWWWWWWWWWWWW `�// �' I�� ESTORATION W WWWWW JI/W r — CONS 1VJ� � � /41 ��WWWWWWWWWWWWWWW/Q\"" 0SEMENT � �I ONSERVA�ASEMENTZ E TIP .O- / URBANCE- 'WWWWWWWWWWWWW � DITURW � g / 456 OF ADDITIONAL STREAM6 oO�lWWWWWWWWWWWWWWWWWWW��/O �/WWWWWWWWWW�WWWWWWWWWWW_ Q EAST CN �W /i" TURBANCE� ^ / OW�QWWVWWWWWWWWr�°o 0/ b-o� O�a0O O00_ O ;`Q- / /W371SrW �8y WWWWWWyWWWWWWWWWWWVW�/' //l/WWWWWWWWWWWWWWWWWWWWW � OWWWWWWWWWWWWWWWWW oO �/WWWWWWWWWWWWWWWWWWWW OSWWWWWWWWWWWWWWWWWWO° �O O 8 ADDITIONAL TEMP A�DltlYDWERW WWW WW/WWWW �r iO• �� o�� O�O O� APPROVED STREAM STREAM DISTURBANCE 1 I 'tV�A�ME,NWWWW * M .RIP ,RAPW WW ADDED WW �WWWWWWWWWWWWWWWWWWWWWW DISTURBANCE .TO RE y(/, _ _ oOI o _I�/WWWWWWWWW'WWWWWWWWWWWnLYI - OUTSIDE OF APPROVED LIMITS 39 LF y WWW rWWWWWWWW///WWWWWWWWWWWWWWVV��• C (v .WWWWWWWWWWWWWWWWWWWWWW/�, BEHAVED APPROVED PERM STREAM 897.660 PROPOSED STREAM WWW / /�4 � l PERMANENTDISTURBANCE STREAM � // \WWWWW /.Wg��/�/WWWWWWWWWWWWWWWWW DISTURBANCE N WWWWWWW RIP WX W�WWWWWWWWEXISTING jWWWWWWWWWWWWW CONSERVATION EASEME205 LF DIS � FREDUCTIO�F/� E DWW•WWWWWWWyyW9Qy /2WWWWWWWW NA QfWWWWWWWW / all A \1� ^ � WWWWW ADDITIONAL WETLAND DISTURBANCE 4 W WWWW W� Di�fl � TURBANCE PERMANENT WETLAND DISTURBANCE WW � EXISTING RIP RAP � WW �/�WWWWWWWWWWWWWWW ///�/WWWWWWWWWWWWWWWWWWWvWWWW- DISTURBANCE TO BE / /// �// J/�/- I REMOVED OUTSIDE OF APPROVED LIMITS STREAM DISTURBANCE yj.WWWWPERMANENT W PROPJIM WETLAND RESTORATION \WWWWWWWWWWWWWWWWWWWWWWv\ ' \ � ADDITIONAL TEMP • TEMPORARY STREAM DISTURBANCE REST��777� 37 LF ON PERMANENT STREAM DISTURBANCE �� STREAM DISTURBANCE , �/�_WWWWWWWWWWWWWWWWWWWWWW�// ��WWWWWWWWWWWWWWWWWWWWWWWW/ �//� OUTSIDE OF APPROVED LIMITS 21 LF ADDITIONAL STREAM DISTURBANCE �9��WWWWWWWWWWWWWWWWWWWWWWWW� �_WWW \Oo�c�\ STREAM RESTORATION EXISTING DISTRUBANCE AS -BUILT FINAL/ROPOSED DISTURBANCE 1"=40' 1"=40' 1 2 3 4 5 a 00 0 0 0 00 I Z 0 F- W 0 W w W CV U I rn 3 v 0 M U X Ll Z a F- LLII CV Cn 0 I 0 i 0 N CT 0 I 0 C 0 .N C a) X w v v 0 W 0 `0 rn C a� a� 0 -2 i 0 0 i a. w Q Z 0 Z Q 0 triaddesigngroup Architecture I Engineering I Interior Design Triad Design Group, P.C. 4807-C Koger Boulevard Greensboro, NC 27407 Telephone 336-218-8282 Facsimile 336-218-8010 www.triad-designgroup.com NC Architecture Reg. 50709 NC Engineering Lic. C-1108 (\A CARP00 °00oo 0o fL ° zz o o. 0 �o o a SEAL a� 0 30521 oo o-7 °� o G O �o F °°° ° 6 00001- W -' Ip PROFESSIONAL OF RECORD: MATTHEW W. JOHNSON, P.E. h act Z ccLUH W a m Z LUW J be CU O CU caU W W Z O y Z CO .i a A/ L O 1 01-06-1-7 NGDOT Mk Date Description Revisions RESTORATION PLAN Date: JANUARY 201-7 Drawn: Check: Job Number: 16-OG2 Sheet: C1 .2 1 2 3 4 5 Restoration Construction Sequence - 1. Contractor to stake out initial limits of restoration areas prior to commencing restoration WETLAN of streams. STREAM RESTORATION CONTRACTOR NOTES MITIGATION 2. Verify bypass ditch is in good working order and is to remain in place during stream PLANTING AREA restoration. LOG DROP: Construct log drop structures by first shaping the channel to the grades specified, including scour pools. Next, excavate enough bed materia SEE PLANTING to place the logs, filter fabric and gravel overlay. Placement of logs shall extend a minimum of three feet into stream bank. First, place footer log an NOTES SPECIES 3. Install Log Drops and Constructed Riffle on upper end of 84" Culvert. then check the elevations on stream bottom and tie into the bank. Place header log on foundation log and secure with rebar in accordance with specifie AND PLANTING 4. Backfill 84" culvert 1' through the length of the entire culvert. plans. Logs can be tied together in lieu of rebar depending on field conditions. If logs are tied together, then the footer log should be off -set from th RATE header log by 1-2 inches down -stream. The maximum offset of header and footer logs should not exceed 3 inches down -stream. Header log should b 5. Grade Channel and Channel Banks to match pre -disturbance grades and tie to 84" culvert. set 3" above final structure invert. Backfill edges of logs and cut notch to specified invert. The logs shall be placed tightly together to minimize gaps. Use REMOVE TEMP SKIMME \l/ q/ 6. Install silt fence along top of stream banks and leave in place until adjacent wetlands can logs that are straight, uniform diameter and free of rot, disease and insect infestation. Use hardwood tree species for logs. Stable or nail filter fabric a TRAP AND RESTORE TO be restored. the upstream end of the structure as shown on the drawings and backfill with gravel to seal any gaps. Fill the voids on the upstream side of surface log ORIGINAL GRADES with gravel such that water will flow over the surface logs rather than through gaps in the logs. 7. Stabilize stream banks with matting and live stakes as shown on details. 8. Form Rip Rap at culvert outlet to form a channel as shown on plans. FABRIC: Filter fabric shall consist of a non -woven geotextile fabric with a minimum weight of 8oz/sy. D9. Grade stream channel and banks to match pre -disturbance grades. RIFFLES: Bed material aggregates shall be gravel or crushed stone. Aggregates shall be composed of clean, hard, durable, mineral particles free from D 10. Stabilize stream banks with matting and live stakes as shown on details. organic matter, clay balls, soft particles, or other substances that would interfere with the draining properties of the aggregates. This material shall b placed with typical thickness of less than 24 -inches. Either use an approved stock -pile of river alluvium or mix equal parts Riprap, 2-6 inch diameter (0. \ 11. Install silt fence at top of bank until adjacent wetlands can be restored. to 11 lbs.) and 57 stone, %-inch to 1%2 diameter. The surface of placed bedding material shall be thoroughly chinked and filled with the smaller stones b 12. Remove lower coffer dam once stream channel is complete and banks are stabilized. scattering and tamping. \ Final Grade: Following construction of in -stream structures, the channel shall be final graded to provide a smooth transition around the structures an 13. Remove upper coffer dam and allow stream to enter restored channel and culvert. between proposed and existing slopes in preparation of final restoration. The constructed stream channel shall be restored as soon as possible by seeding / — AJ/ \V \V \� r �' \� 14. Begin backfilling culvert in accordance with these plans and specifications. The excavated channel shall be fully restored and vegetated, if possible, before flows are introduced t the new channel. * I 15. Install pipe network as grading progresses. Install inlet protection at all inlets. \J/ \J/ 16. Complete Grading of side slopes and stabilize. SPLASH ROCK/COBBLE SPALSH GUARD FOR POOL: Splash rock of one to several stones 1 foot or greater can be used in lieu of cobble material. Splash 0 10' 20' Rock is required to have at least one relatively flat edge. If cobble material or rip -rap is used on down -gradient portion of log structure, then it should b 17. Once stabilized and given approval from DEMLR, close Sediment traps at toe of appropriate sized material no less than 4-6 inch diameter. The length of the cobble/rip-rap splash guard should be a minimum of 2 times the height o g pp p embankments. the header log. 18. Begin Restoration of wetlands. SCALE: 1 = 10, GRADING: 19. Contractor to stake remaining restoration areas prior to commenting restoration. A. LINES AND GRADES REMOVE TEMP IO \j/ \V 20. Remove Sediment traps and dispose of accumulated silt as required. CHANNEL AND RESSTORETORE TO \l/ Embankments and excavations shall be constructed to the lines, grades and cross sections indicated on the drawings, unless otherwise directed by the \JA ORIGINAL GRADES \1/ 21. Re -Establish pre -disturbance grades, while minimizing construction equipment as much ENGINEER. The ENGINEER reserves the right to increase or decrease the bankfull bench widths or the embankment slopes or make such other changes i as possible. the cross sections as may be deemed necessary. 22. Recondition soil as required by designer and field conditions. B. FINAL CHANNEL GRADING AND RESTORATION \ \ \\ \ \\ I I 23. Begin planting wetland plants as indicated in the planting charts. Following construction of in -stream structures, the channel shall be final graded to provide a smooth transition around the structures and betwee \ \ 24. Complete and remove all remaining erosion control devices (silt fence, proposed and existing slopes in preparation of final restoration. The constructed stream channel shall be restored as soon as possible by seeding i plantings \\ \\ \J/ \4/ \ \ \ \ I' diversion berms, etc..) accordance with these plans and specifications. The excavated bankfull channel shall be fully restored and vegetated before flows are introduced to th new channel. RESTRICTED WORK AREAS: Excavations and filling shall be confined to areas within the work limits as indicated on the Drawings. Prior to beginning work, the Work Limits shall be marked in accordance with staking and surveyor layout. Pre -construction meetings with the contractor prior to work are required. IV\l/ � \I� WETLAND RESTORATION CONTRACTOR NOTES AND PLANTING PLAN C \ \ \�l�` � Soil Preperatlon \ \ \ \ \ \ Temporary fills within wetland restoration area will be removed while limiting mechanical soil compaction to initial top soil grade. Removal of existing \ topsoil should be avoided whereas possible. Once final wetland grade is obtained, the designer will determine in the field if tillage is necessary with IN,\ \ \ \_ V/ �T/ �V Vheavy rake, cultivator or roto -tiller. Soil amendments including top soil, mulch, or organic matter (decomposed wood matter, yard trimmings, sawdust o other or other wood waste material that is free of stones, sticks, soil, and toxic substances harmful to plants) maybe incorporated based upon field observations and local availability of materials following removal of temporary fills and if necessary, tillage. All soil amendments must be approved b designer prior to application. \\ N, \ ` 1 —� PLANTING DENSITY �Y�1� E�HgNNE I \� -- _ TREES: Install containerized 1-3 gallon plants consisting of native woody species planted at 10'x 10' spacing (124 trees). L SHRUBS: Install 1 20 20 (62 Bare b containerized gallon plants consisting of native species planted at x spacing shrubs). root shrubs should �J \l/ / \� if for by the designer, if avoided, possible and approved use necessary. \ \ \ N_I II \ \ / \ LIVE STAKES: Install live in Live be 3 3 feet the \ stakes accordance with plans and specifications. stakes shall placed at a minimum spacing of x on outside \ bank of restored stream meanders. Spacing shall be a minimum of 2 x 2 feet adjacent to grade control devices. Spacing shall be a minimum of 4 x 4 fee 0 A \ \ within along the remainder of the stream banks 0 +\ HERBACEOUS: Use Native Wetland Seed Mix to specifications per seed mix. Generally, 1/2 Ib. per 1,000SF should be used depending on seed mix (6lbs.). PLANTING LAYOUT XF/� y Trees and shrubs will be planted in a random pattern and distributed throughout the identified designated replanting zone. \ I SPECIES Species should be selected from Wetland Native Plant Vendor List for North Carolina (attached). An attempt should be made to obtain the following S REMOVE TEMP COFFER DA \' preferred species identified below with asterisks. Deviations must be pre -approved by the designer. �'�/ / AND RESTORE STREAM \V \1/ \ \ Common Name Scientific Name / CHANNEL TO ORIGINAL J, Trees -10'x10' Spacing \ RESTORE STREA \ American Sycamore* Platanus occidentalis GRADES / CHANNEL TO ORIGINAL \ River Birch* Betula nigra GRADES AND SLOPE Green Ash* Fraxinus pennsylvanica Red Maple* Acer rubrum B / Willow Oak Quercus phellos �/ �/� �/� Swam Chestnut Oak Quercus michauxii - / �/+ INSTALL EMP Si�L� p Cherrybark Oak Quercus pagoda B FENCE NCE STREAM SCOUR POOL CHANNE AND BANKS iia �V Laurel oak Quercus lyrata HAVE B EN � Overcup Oak Quercus lrata STABILI ED. REMOVE Swamp Black Gum* Nyssa sylvatica var. biflora a Ironwood, American Hornbeam Carpinus caroliniana / UPON ESTORATION OF Box Elder Acer negundo v ` ADJACINT WETLANDS Sugarberry Celtis laevigata American Elm Ulmus americana I Persimmon* Diospyros virginiana y o Shrubs - 20'x20' Spacing Tag Alder* Alnus serrulata / LOG DROP W/ SCOUR POOL Winterberry Ilex verticillata SEE DETAIL ON SHT C1.4 Possumhaw Viburnum nudum / / Silky Dogwood* Cornus amomum \ (( Spicebush Lindera benzoin I Common Elderberry* Sambucus canadensis / STREAM STABILIZATION RADES TO MATCH ORIGINAL Live Stakes - 2' Along Devices. 3' Along Meanders. 4-6' Along Riffle/Pools GRADES AND SLOPE Black Willow* Salix nigraSilky I / Dogwood* Cornus amomum CONSTRUCTED RIFFLE / I Buttonbush Cephalanthus occidentalis SEE DETAIL ON SHT C1.5 Common Elderberry Sambucus canadensis / / I Silky Willow Salix sericea Note: Final species selection may change due to refinement or availability at the time of planting. If species substitution is / LOG DROP W/ SCOUR POOL required, the planting Contractor will submit a revised planting list to Designer for approval prior to the procurement of plant SEE DETAIL ON SHT C1.4 stock. INSTALLATION CONTAINERIZED: All planting pits shall be dug so the walls of the planting pits shall be vertical or sloping outward in heavy soils. Scarify the walls of the pit after digging. Excavate the planting pit to at least 1-1/2 times the width of the root mass of the plant to be installed. The planting pit shall be deep enough to allow the top of the soil surface of the containerized plant to be flush with the existing grade after the soil in the bottom of the hole is tamped. Remove all debris from the pit and tamp loose / soil in the bottom of the pit by hand. Remove the plant by inverting the container and pushing on the container bottom. If roots are concentrated along the inside / surface of the plant pot, the surface of the plant root ball should be scarified to encourage outward growth into the soil of the planting pit. Place the plant straight in / the center of the planting pit, carrying the plant by the root mass. All planting holes shall be dug by hand using a mattock, pick or iron bar and planting holes shall be A / / deep enough to allow the first lateral root of the root mass to be flush with the existing grade. Remove all non-organic debris from the hole and tamp loose soil in the A 0 / bottom of the hole by hand. When planting, spread roots in the hole and gradually backfill with soil. Firm the soil, being careful to avoid breaking roots, fill hole with 0 / / / water (weather permitting), and backfill with additional soil as necessary. Hand tamp as hole is being backfilled to completely fill all voids and air pockets. Do not over compact soil. Make sure plant remains straight during backfilling/tamping procedure. LIVE STAKE: All live stakes split during installation may be left in place, but must be supplemented with a new live stake that remains un -split after installation. / \ HERBACEOUS: All areas to be seeded shall conform to the finished grades as specified on the plans and be free of weeds, trash, debris, brush, clods, loose stones and / other foreign materials larger than three inches (3") in diameter or length that would interfere with seeding. All gullies, washes, or disturbed areas that develop subsequent to final dressing shall be repaired prior to seeding. Apply fertilizer in accordance with these specifications. Seeding shall be accomplished by using a broadcast spreader. When seed is installed by a broadcast spreader, it shall be capable of placing seed at the specified rate. Seed shall be applied in two different directions and thoroughly covered with %" inch of topsoil. Immediately after seeding, the site shall be watered lightly but thoroughly so that the top 4 inches of soil is saturated. RESTORATION PLAN 1" = 10' LIMITATION OF MACHINERY: Wetlands will be restored to similar pre -construction conditions and grades. Contractor shall minimize use of all construction equipment within restoration area to maximum extent practical. Soil removal shall be done with an extended trackhoe whereas possible to avoid compacting existing native soils. Handwork is to accompany the use of the trackhoe to provide a finished grade to match the pre -disturbance grades. 1 2 3 4 5 triaddesigngroup Architecture I Engineering I Interior Design Triad Design Group, P.C. 4807-C Koger Boulevard Greensboro, NC 27407 Telephone 336-218-8282 Facsimile 336-218-8010 www.triad-designgroup.com NC Architecture Reg. 50709 NC Engineering Lic. C-1108 (\A CARP00 °00oo 0o fL ° zz o o. 0 �o o a SEAL a� 0 30521 oo o-7 °� o G O �o F °°° ° 6 00001- W -' Ip PROFESSIONAL OF RECORD: MATTHEW W. JOHNSON, P.E. h act Z ccLUH W a m Z LUW J be CU O CU caU W W Z O y Z CO .i a A/ L O 1 01-06-1-7 NGDOT Mk Date Description Revisions RESTORATION PLAN Date: JANUARY 201-7 Drawn: Check: Job Number: 16-OG2 Sheet: C1 .2 M M N r, 0 I Z 0 Q 0 W r? U I 3 0 M U X Ul Z a UJI I N 0 I i i N rn 0 I 0 C 0 .N C a) X w v v 0 W 0 0 0 U) C 0 v i 0 0 i a. w Q Z 0 Z Q 0 triaddesigngroup Architecture I Engineering I Interior Design Triad Design Group, P.C. 4807-C Koger Boulevard Greensboro, NC 27407 Telephone 336-218-8282 Facsimile 336-218-8010 www.triad-designgroup.com NC Architecture Reg. 50709 NC Engineering Lic. C-1108 °°°00000000p0 N CAR °°4,0"" o000o 04 =poE s s 9°o o�oF 4 o 0 o a SEAL o9 0 30521 o =o o o -7%o o G' N 0000 , yF000�000�oo 00 000�0000- PROFESSIONAL OF RECORD: MATTHEW W. JOHNSON, P.E. 1 07-06-17 NCDOT Mk Date Description Revisions RESTORATION PLAN Date: JANUARY 2017 Drawn: Check: Job Number: 16-092 Sheet: C1 .3 1 2 3 4 5 I` Restoration Construction Sequence - 1. Contractor to stake out initial limits of restoration areas prior to commencing restoration of streams. STREAM RESTORATION CONTRACTOR NOTES 919 2. Verify bypass ditch is in good working order and is to remain in place during stream restoration. LOG DROP: Construct log drop structures by first shaping the channel to the grades specified, including scour pools. Next, excavate enough bed material to place the logs, filter fabric and gravel overlay. Placement of logs shall extend a minimum of three feet into stream bank. First, place footer log and 3. Install Log Drops and Constructed Riffle on upper end of 84" Culvert. then check the elevations on stream bottom and tie into the bank. Place header log on foundation log and secure with rebar in accordance with specified 4. Backfill 84" culvert 1' through the length of the entire culvert. plans. Logs can be tied together in lieu of rebar depending on field conditions. If logs are tied together, then the footer log should be off -set from the header log by 1-2 inches down -stream. The maximum offset of header and footer logs should not exceed 3 inches down -stream. Header log should be 5. Grade Channel and Channel Banks to match pre -disturbance grades and tie to 84" culvert. set 3" above final structure invert. Backfill edges of logs and cut notch to specified invert. The logs shall be placed tightly together to minimize gaps. Use 6. Install silt fence along top of stream banks and leave in place until adjacent wetlands can logs that are straight, uniform diameter and free of rot, disease and insect infestation. Use hardwood tree species for logs. Stable or nail filter fabric at be restored. the upstream end of the structure as shown on the drawings and backfill with gravel to seal any gaps. Fill the voids on the upstream side of surface logs with gravel such that water will flow over the surface logs rather than through gaps in the logs. 7. Stabilize stream banks with matting and live stakes as shown on details. D8. Form Rip Rap at culvert outlet to form a channel as shown on plans. FABRIC: Filter fabric shall consist of a non -woven geotextile fabric with a minimum weight of Boz/sy. D 9. Grade stream channel and banks to match pre -disturbance grades. RIFFLES: Bed material aggregates shall be gravel or crushed stone. Aggregates shall be composed of clean, hard, durable, mineral particles free from 10. Stabilize stream banks with matting and live stakes as shown on details. organic matter, clay balls, soft particles, or other substances that would interfere with the draining properties of the aggregates. This material shall be placed with typical thickness of less than 24 -inches. Either use an approved stock -pile of river alluvium or mix equal parts Riprap, 2-6 inch 11. Install silt fence at top of bank until adjacent wetlands can be restored. diameter (0.5 to 11 lbs.) and 57 stone, %-inch to 1% diameter. The surface of placed bedding material shall be thoroughly chinked and filled with the 12. Remove lower coffer dam once stream channel is complete and banks are stabilized. smaller stones by scattering and tamping. Final Grade: Following construction of in -stream structures, the channel shall be final graded to provide a smooth transition around the structures and 13. Remove upper coffer dam and allow stream to enter restored channel and culvert. 0 10' 20' between proposed and existing slopes in preparation of final restoration. The constructed stream channel shall be restored as soon as possible by seeding 14. Begin backfilling culvert in accordance with these plans and specifications. The excavated channel shall be fully restored and vegetated, if possible, before flows are introduced to the new channel. 15. Install pipe network as grading progresses. Install inlet protection at all inlets. SCALE: 1 = 10' 16. Complete Grading of side slopes and stabilize. SPLASH ROCK/COBBLE SPALSH GUARD FOR POOL: Splash rock of one to several stones 1 foot or greater can be used in lieu of cobble material. Splash REMOVE TEMPORARY SKIMME Rock is required to have at least one relatively flat edge. If cobble material or rip -rap is used on down -gradient portion of log structure, then it should be TRAP AND RESTORE TO 17. Once stabilized and given approval from DEMLR, close Sediment traps at toe of appropriate sized material no less than 4-6 inch diameter. The length of the cobble/rip-rap splash guard should be a minimum of 2 times the height of ORIGINAL GRADES I embankments. the header log. 18. Begin Restoration of wetlands. GRADING: 19. Contractor to stake remaining restoration areas prior to commenting restoration. I A. LINES AND GRADES _ i - 20. Remove Sediment traps and dispose of accumulated silt as required. / - Embankments and excavations shall be constructed to the lines, grades and cross sections indicated on the drawings, unless otherwise directed by the N, 1-1 21. Re -Establish pre -disturbance grades, while minimizing construction equipment as much ENGINEER. The ENGINEER reserves the right to increase or decrease the bankfull bench widths or the embankment slopes or make such other changes in I N, 11-1 as possible. the cross sections as may be deemed necessary. 22. Recondition soil as required by designer and field conditions. B. FINAL CHANNEL GRADING AND RESTORATION N, 23. Begin planting wetland plants as indicated in the planting charts. Following construction of in -stream structures, the channel shall be final graded to provide a smooth transition around the structures and between 24. Complete plantings and remove all remaining erosion control devices (silt fence, proposed and existing slopes in preparation of final restoration. The constructed stream channel shall be restored as soon as possible by seeding in \ diversion berms, etc..) accordance with these plans and specifications. The excavated bankfull channel shall be fully restored and vegetated before flows are introduced to the \ / new channel. RESTRICTED WORK AREAS: Excavations and filling shall be confined to areas within the work limits as indicated on the Drawings. Prior to beginning work, the Work Limits shall be marked in accordance with staking and surveyor layout. Pre -construction meetings with the contractor prior to work are required. C PROPOSED WETLAND WETLAND RESTORATION CONTRACTOR NOTES AND PLANTING PLAN RESTORATION 6,036 SF Soil Preperation O\ � 9 Temporary fills within wetland restoration area will be removed while limiting mechanical soil compaction to initial top soil grade. Removal of existing \ \ �S \ \ topsoil should be avoided whereas possible. Once final wetland grade is obtained, the designer will determine in the field if tillage is necessary with � heavy rake, cultivator or roto -tiller. Soil amendments including top soil, mulch, or organic matter (decomposed wood matter, yard trimmings, sawdust or \ \ \ 9 other or other wood waste material that is free of stones, sticks, soil, and toxic substances harmful to plants) maybe incorporated based upon field observations and local availability of materials following removal of temporary fills and if necessary, tillage. All soil amendments must be approved b Y g p Y Y g pp Y designer prior to application. PLANTING DENSITY TREES: Install containerized 1-3 gallon plants consisting of native woody species planted at 10'x 10' spacing (124 trees). SHRUBS: Install containerized 1 gallon plants consisting of native species planted at 20' x 20' spacing (62 shrubs). Bare root shrubs should be avoided, if possible and approved for use by the designer, if necessary. \\Ile, \ GNB - - - `�'V/ LIVE STAKES: Install live stakes in accordance with plans and specifications. Live stakes shall be placed at a minimum spacing of 3 x 3 feet on the outside bank of restored stream meanders. Spacing shall be a minimum of 2 x 2 feet adjacent to grade control devices. Spacing shall be a minimum of 4 x 4 feet within along the remainder of the stream banks 114/ \O - - - - - /'- -- HERBACEOUS: Use Native Wetland Seed Mix to specifications per seed mix. Generally, 1/2 Ib. per 1,000SF should be used depending on seed mix (6lbs.). - - - - - - _- / - - - O O �- O-- - �- _� ---_ �, REMOVE TEMPORARY DIVERSIO \j/ \ \j/ - - -� �/_, \�. �\1/ _ _ - - - _ _/ _\�i PLANTING LAYOUT - - - - CHANNEL AND RESTORE TO ORIGINAL - _ �V7 - - - / GRADES �� Trees and shrubs will be planted in a random pattern and distributed throughout the identified designated replanting zone. SPECIES �OOOOOO QOQOQOQOQO Species should be selected from Wetland Native Plant Vendor List for North Carolina (attached). An attempt should be made to obtain the following referred species identified below with asterisks. Deviations must be pre -approved by the designer. SED O Common Name Scientific Name \ � I \ O�O QOQOQOQO OQO� � HANNEL Trees -10'x10' Spacing 897.8 American Sycamore* Platanus occidentalis River Birch Betula nigra Green Ash* Fraxinus pennsylvanica B o 0 0 0 0 0 0 0 0 0 0 Red Maple* Acer rubrum p B \ O O O O O O O Willow Oak Quercus phellos �� QO O OQOQ OQO O Swamp Chestnut Oak Quercus michauxii Cherrybark Oak Quercus pagoda \l/ WETLAND PLANTING RESTORATION AREA \l/ \l/ I \l/ Laurel Oak Quercus laurifolia EX, D I Overcup oak Quercus lyrata RESTORE TO ORIGINAL GRADES \ I _ O QO �OQOQO Swamp Black Gum* Nyssa biflora .y �. .1/ I �/ �/ \ \1/ \/GWIA EL sylvatica var. O Ironwood, American Hornbeam Carpinus caroliniana \ ELEV`= �j4 77... O O O O O `TOB = 0 Box Elder Acer negundo \ / o OQOQOQOQOQOQOQ Sugarberry Celtis laevigata W \ American Elm Ulmus americana Persimmon* Diospyros virginiana EX/PRc CSED � 0� --__- ------------------- Shrubs - 20'x20' Spacing Tag Alder* Alnus serrulatas CHANNEL CHANNEL � / EV/ _ 897.66 TIE RIP RAP TO ossu berry Ilex verticil lata ELEV = 898.66 T - 898.80` I ' � XISTING/PROPOSED Possumhaw viburnum nudum CHANNEL GRADES Silky Dogwood* Cornus amomum Spicebush Lindera benzoin - 84 RCP INV = 897.66 Common Elderberry* Sambucus canadensis - EXISTING WETLANDS �I/ \l/ \� \V Live Stakes - 2' Along Devices. 3' Along Meanders. 4-6' Along Riffle/Pools W �, \l/ \l/ r \l/ \l/ \�` \l/ INSTALL SILT FENCE ONCE STREAM CHANNEL AND Black willow* Salix nigrasilky / / STREAM BANK STABILIZATION STREAM BANKS HAVE BEEN Dogwood Cornus amomumButtonbush Cephalanthus occidentalis RESTORE TO ORIGINAL GRADES STABILIZED. REMOVE UPON Common Elderberry sambucus canadensis RESTORATION OF WETLANDS Silky Willow Salix sericea Note: Final species selection may change due to refinement or availability at the time of planting. If species substitution required, the planting Contractor will submit a revised planting list to Designer for approval prior to the procurement of plant stock. RESTORE STREAM \ CHANNEL / \I � � �j°� � AND BANKS TO ORIGINAL INSTALLATION X / CONTAINERIZED: All planting pits shall be dug so the walls of the planting pits shall be vertical or sloping outward in heavy soils. Scarify the walls of the pit after `tELEVE _ / 897.44 GRADES digging. Excavate the planting pit to at least 1-1/2 times the width of the root mass of the plant to be installed. The planting pit shall be deep enough to allow the top / /� of the soil surface of the containerized plant to be flush with the existing grade after the soil in the bottom of the hole is tamped. Remove all debris from the pit and 4'j \� \�� \l/� \�/ \l/ \l/ \l/ / tamp loose soil in the bottom of the pit by hand. Remove the plant by inverting the container and pushing on the container bottom. If roots are concentrated along / A / the inside surface of the plant pot, the surface of the plant root ball should be scarified to encourage outward growth into the soil of the planting pit. Place the plant / / straight in the center of the planting pit, carrying the plant by the root mass. All planting holes shall be dug by hand using a mattock, pick or iron bar and planting holes be deep first lateral be flush debris from hole loose A �� shall enough to allow the root of the root mass to with the existing grade. Remove all non-organic the and tamp '�V "\V soil in the bottom of the hole by hand. When planting, spread roots in the hole and gradually backfill with soil. Firm the soil, being careful to avoid breaking roots, fill hole with water (weather permitting), and backfill with additional soil as necessary. Hand tamp as hole is being backfilled to completely fill all voids and air pockets. Do not over compact soil. Make sure plant remains straight during backfilling/tamping procedure. EX CHANNEL // I / ELEV = I// LIVE STAKE: All live stakes split during installation may be left in place, but must be supplemented with a new live stake that remains un -split after installation. 897.68 \J/ I / HERBACEOUS: All areas to be seeded shall conform to the finished grades as specified on the plans and be free of weeds, trash, debris, brush, clods, loose stones and IJ other foreign materials larger than three inches (3") in diameter or length that would interfere with seeding. All gullies, washes, or disturbed areas that develop subsequent to final dressing shall be repaired prior to seeding. Apply fertilizer in accordance with these specifications. Seeding shall be accomplished by using a broadcast spreader. When seed is installed by a broadcast spreader, it shall be capable of placing seed at the specified rate. Seed shall be applied in two different directions and thoroughly covered with %" inch of topsoil. Immediately after seeding, the site shall be watered lightly but thoroughly so that the top 4 inches of soil is RESTORATION PLAN saturated. 1"=10' LIMITATION OF MACHINERY: Wetlands will be restored to similar pre -construction conditions and grades. Contractor shall minimize use of all construction equipment within restoration area to maximum extent practical. Soil removal shall be done with an extended trackhoe whereas possible to avoid compacting existing native soils. 1 2 3 Handwork is to accompany the use of the trackhoe to provide a fi I ished grade to match the pre -disturbance grades. 5 triaddesigngroup Architecture I Engineering I Interior Design Triad Design Group, P.C. 4807-C Koger Boulevard Greensboro, NC 27407 Telephone 336-218-8282 Facsimile 336-218-8010 www.triad-designgroup.com NC Architecture Reg. 50709 NC Engineering Lic. C-1108 °°°00000000p0 N CAR °°4,0"" o000o 04 =poE s s 9°o o�oF 4 o 0 o a SEAL o9 0 30521 o =o o o -7%o o G' N 0000 , yF000�000�oo 00 000�0000- PROFESSIONAL OF RECORD: MATTHEW W. JOHNSON, P.E. 1 07-06-17 NCDOT Mk Date Description Revisions RESTORATION PLAN Date: JANUARY 2017 Drawn: Check: Job Number: 16-092 Sheet: C1 .3 a 0 0 (V r, 0 N r, N I Z N 0 o- U o' > J D U 0 0 0 U I 3 r 0 U I x wl 0 z a J w I N 0) 0 I CJ N 0 I 0 N C 0 X w U 0 0 0 0 O 5) N C 0 0 / 0 i a w a z 0 z Q � 6'00 0 EX/PROPOSED 9rs �O CHANNEL 11 ELEV = 897.88 TOB = 899.90 EX/PROPOSE CH NEL D 897.74 TOB 899 211 ° �\ �vEX"/Pf20P6SEp C�HANNEL� ��>o o> ELEV = 897.66 TOB8?a€i 80 w w \ �\ � w \ i w w �w EX CHA14NEL ��` � 0. ELEV c- "897.44" 0 Iw w w v. w \\N0,M) CHAN EL�V= ��✓ / I \ 898.-f>k� &X,,CHANN - ELEV 2 3 D W V, V. V, \ w �� kG c v w w w w Q X� CONSTRUCTED �� w RIFFLE w V, ` w V V. w V. w V, w . "Ag V V. �- w w w y SLOG CHECK DAM #2 % � � v -OG CHECK DAM #1 C . ° i 910 ,y�y cb 920 925 10 910 TIE RIP RA TO EXISTIN1 CHANNE GRAD RESTORE CHANNEL TO PREDISTURBED GRADES 890 10+00 11+00 12+00 13+00 1 2 14+00 0 40' 80' SCALE: 1" = 40' HORIZ 1" = 4' VERT 920 910 890 14+50 4 5 LIVE CUTTINGS MATTING 4'f 3' MIN. 1.33' LOGS 2 MIN. REBAR ANCHORS STREAM CROSSING 2 MIN. NOTES: 1. USE LOGS THAT ARE STRAIGHT, UNIFORM DIAMETER AND FREE OF ROT, DISEASE OR INSECT INFESTATION. 2. INSTALL LIVE CUTTING INTO ADJACENT PROTECTION DURING CONSTRUCTION. EXTEND TO BELOW STREAM BED. LOG CHECK DAM DETAIL N.T.S. TOB 900.81 TOB 900.56 899.72 899-56--//899.56 899.56 LOG CHECK DAM #1 N.T.S. TOB 910.58 TOB 900.68 899.90 899.74-/899.74 899.74 LOG CHECK DAM #2 N.T.S. 3 4 NCDOT TYPE 2 DR,41N,4r-:sE &W,4LE 5CI4EDULE DOWN 5TREA4 C C,44NNEL SWALE CONDITION LINER N' D' B' t' SLOPE MAX. FLOW MAX. FLOW VELOCITY MANNINCxS SHEAR DEPTH (CFS) (FPS) n FORCE (PSP) 1 PERMANENT RIP RAP 3 1' 6' 36' 0.0068 3.125' 220.95 2.59 0.018 120 NOTES 1. PERMANENT DE51GN = Q10 M;=: -rA I I NO SCALE SCOUR POOL ROCK RIP RAP REBAR FLO END ROCK NOTCH ELEVATED- r„ --- - - STREAM BED 899.52 899.56-/ BACKFILL WITH COBBLE • • ■I .a DIM 0 1 LOG CHECK DAM 11 N.T.S. 899.56899.74- 899.41 --- 1A90 899.60 /l- 899.90 FLOW ,,-899.74 --- LOG-- LOG CHECK DAM 12 N.T.S. REBAR GEOTEXTILE iv 2X4 NAIL STAPLE OR NAIL N NOTE: DRILL 1 1/8-0 HOLE AND DRIVE #8 REBAR 12" THROUGH. BEND END AT TOP. LOG CHECK DAM DETAIL N.T.S. 5 CI triaddesigngroup Architecture I Engineering I Interior Design Triad Design Group, P.0 4807-C Koger Boulevard Greensboro, NC 27407 Telephone 336-218-8282 Facsimile 336-218-8010 www.triad-designgroup.com NC Architecture Reg. 50709 NC Engineering Lic. C-1108 OSS\ P O RGRo - Of SEAL -10 _ CAR,, °O°o °Q°\`�� N C °0 0oo 0ARO 0°O H o00s0s °° 0 a�°oO°°o9O00o 0 ° o oa SEAL o � 0 30521 o 20 0� o+G'1NE<,,00 o ° °0000 o° �O ° -0000-0 Py PROFESSIONAL OF RECORD: MATTHEW W. JOHNSON, P.E. co ga. O co y U W Z o N Z � N ca 1= N a A/ L Y 1 0�-06-1 � NGDOT Mk Date Description R2V1510n5 CULVERT CROSSING Date: JANUARY 201-7 Drawn: Check: Job Number: 16-092 Sheet: C1.4 1 C IP PROPOSED GRADE (TYP) PROP. WATER LINE), 3 - 84" RCP INV= 898.54 84" RCP = 897.66 CU RT INV CHANNEL INV=899.54 IOT BE' -135.32 LF 84" CP ® IIN -N/5 0 0 0 III=117 1=1 I 1= =1 -- - =1 1= =1 - -IF LOG CHECK #2 LOG DAM #1 ECK E oDAM 1' EMBEDMENT 11+00 12+00 13+00 1 2 14+00 0 40' 80' SCALE: 1" = 40' HORIZ 1" = 4' VERT 920 910 890 14+50 4 5 LIVE CUTTINGS MATTING 4'f 3' MIN. 1.33' LOGS 2 MIN. REBAR ANCHORS STREAM CROSSING 2 MIN. NOTES: 1. USE LOGS THAT ARE STRAIGHT, UNIFORM DIAMETER AND FREE OF ROT, DISEASE OR INSECT INFESTATION. 2. INSTALL LIVE CUTTING INTO ADJACENT PROTECTION DURING CONSTRUCTION. EXTEND TO BELOW STREAM BED. LOG CHECK DAM DETAIL N.T.S. TOB 900.81 TOB 900.56 899.72 899-56--//899.56 899.56 LOG CHECK DAM #1 N.T.S. TOB 910.58 TOB 900.68 899.90 899.74-/899.74 899.74 LOG CHECK DAM #2 N.T.S. 3 4 NCDOT TYPE 2 DR,41N,4r-:sE &W,4LE 5CI4EDULE DOWN 5TREA4 C C,44NNEL SWALE CONDITION LINER N' D' B' t' SLOPE MAX. FLOW MAX. FLOW VELOCITY MANNINCxS SHEAR DEPTH (CFS) (FPS) n FORCE (PSP) 1 PERMANENT RIP RAP 3 1' 6' 36' 0.0068 3.125' 220.95 2.59 0.018 120 NOTES 1. PERMANENT DE51GN = Q10 M;=: -rA I I NO SCALE SCOUR POOL ROCK RIP RAP REBAR FLO END ROCK NOTCH ELEVATED- r„ --- - - STREAM BED 899.52 899.56-/ BACKFILL WITH COBBLE • • ■I .a DIM 0 1 LOG CHECK DAM 11 N.T.S. 899.56899.74- 899.41 --- 1A90 899.60 /l- 899.90 FLOW ,,-899.74 --- LOG-- LOG CHECK DAM 12 N.T.S. REBAR GEOTEXTILE iv 2X4 NAIL STAPLE OR NAIL N NOTE: DRILL 1 1/8-0 HOLE AND DRIVE #8 REBAR 12" THROUGH. BEND END AT TOP. LOG CHECK DAM DETAIL N.T.S. 5 CI triaddesigngroup Architecture I Engineering I Interior Design Triad Design Group, P.0 4807-C Koger Boulevard Greensboro, NC 27407 Telephone 336-218-8282 Facsimile 336-218-8010 www.triad-designgroup.com NC Architecture Reg. 50709 NC Engineering Lic. C-1108 OSS\ P O RGRo - Of SEAL -10 _ CAR,, °O°o °Q°\`�� N C °0 0oo 0ARO 0°O H o00s0s °° 0 a�°oO°°o9O00o 0 ° o oa SEAL o � 0 30521 o 20 0� o+G'1NE<,,00 o ° °0000 o° �O ° -0000-0 Py PROFESSIONAL OF RECORD: MATTHEW W. JOHNSON, P.E. co ga. O co y U W Z o N Z � N ca 1= N a A/ L Y 1 0�-06-1 � NGDOT Mk Date Description R2V1510n5 CULVERT CROSSING Date: JANUARY 201-7 Drawn: Check: Job Number: 16-092 Sheet: C1.4 o_ 0 0 N Cq r` 0 r r, I Ln J H w 0 z O F - Q W 0 N W U 1 rn 3 v r` 0 M U LX I 0 z a F - w 3:1 N 0 I (14 0) 0 I C 0 N C N X W v v 0 W 0 0 O C N v 0 / 0 i Clw M Q z 0 z Q 0 C 1 2 3 4 5 BEGIN HEAD OF RIFFLE INVERT ELEVATION AND STATION BEGIN TAIL OF RIF INVERT ELEVATION ) STA1 STREAM CHANNEL Wetland Native Plant Vendor List for North Carolina Prepared by NCDENR 2110/ 10 (updated 10/ 15/ 13) NC Supplier Address City State Zip Phone # Web Address Carolina Greenery 375 Carthage Rd West End NC 27376 910-947-3150 www.carolinagreenery.com Carolina Native Nursery 1 126 Prices Creek Rd Burnsville NC 28714 828-682-1471 www.carolinanativenurserv.com Cill Ide Native Plant Nursery 621 Starburst Ln Raleigh NC 27603 877-479-2673 www.wetlandolantnursery.com Wetland Plants, Inc. 3067 Conners Dr Edenton NC 27932 252-482-5707 www.coastalplainnursery.com Colonial Acres Nursery 2593 Hannah Ford Rd Brevard NC 28712 828-884-4330 www.ncagr.00v/ncproducts/showsite.asr)?ID=1948 Cure Nursery 880 Buteo Ridge Rd Pittsboro NC 27312 919-542-6186 www.curenurserv.com Elk Mountain Nursery P.O. Box 3 Alexander NC 28701 828-683-9330 www.elk-mountain.com Gardens of the Blue Ridge P.O. Box 10, 9056 Wildflower Ln Pineola NC 28662 828-733-2417 www.oardensoftheblueridoe.com Growing Wild Nursery 193 Murphy Rd Bur aw NC 28425 910-200-2112 www.gLowingwildnursery.net Hanging Dog Valley Nursery 2600 Boiling Springs Rd Murphy NC 28906 828-837-7921 N/A Hoffman Nursery 5520 Bahama Rd Rougemont NC 27572 800-203-8590 www.hoffmannursery.com Lamtree Farm 2323 Copeland Rd Warrensville NC 28693 336-385-6144 www.lamtreefarmnursery.com McLamb Nursery, Inc. 640 Greenleaf Rd Angier NC 27501 919-894-3709 www.mclambnurserv.com Mellow Marsh Farm 1312 Woody Store Rd Siler City NC 27344 919-742-1200 www.mellowmarshfarm.com Niche Gardens 1 11 1 Dawson Rd Chapel Hill NC 27516 919-967-0078 www.niche ardens.com NC Forest Service- Claridge Nursery 762 Claridge Nursery Rd Goldsboro NC 27530 919-731-7988 http://nc-forestU.stores.yahoo.net/ Piedmont Carolina Nursery 1867 Sandy Ridge Rd Colfax NC 27235 800-337-1025 www.piedmontcarolina.com Plant Delights Nursery 9241 Sauls Rd Raleigh NC 27603 919-772-4794 www.plantdeliahts.com Rarebird Nursery 252 Collie Rd Castalia NC 27816 919-853-2716 www.rarebirdnurse[y.com Reems Creek Nursery, Inc. 70 Monticello Rd Weaverville NC 28787 828-645-3937 www.reemscreek.com Southeastern Native Plant Nursery 36 Kel-Co Rd Chandler NC 28715 828-670-8330 www.southeasternnatives.com Tarheel Native Trees 616 Hood Farm Rd Clayton NC 27520 919-553-5927 www.tarheelnativetrees.com Taylor's Nursery, Inc. 3705 New Bern Ave Raleigh NC 27610 919-231-6161 www.taylorsnursery.com Out -Of -State Supplier Address City State Zip Phone # Web Address Naturesca es Wetland Plants 4075 Vicksburg Rd Suffolk VA 23437 757-539-4833 N/A Riverbend Nursery 1295 Mt. Elbert Rd NW Riner VA 24149 800-638-3362 www.riverbendnu[agry.com Woodlanders, Inc. 1 128 Colleton Ave Aiken SC 29801 803-648-7522 www.woodlanders.net All NC listed nurseries are certified by the NC Department of Agriculture and Consumer Services as of February 10, 2010. This list is not an endorsement for the above companies and may not be exhaustive. No information was collected concerning the vendors' inspection or treatment of plants for pests and/or diseases. Individual nurseries may not carry large numbers of wetland plants. Attempts should be made to obtain plants from an area as close as possible to the new planting area. Nurseries in or near NC that carry wetland plants native to NC may contact the NC Division of Water Resources 401 & Buffer Permitting Unit at (919) 807-6300 if they wish to be added to the list. FLOW TOP OF BANK GLIDE LENGTH 74 NOTES: 1. UNDERCUT CHANNEL BED ELEVATION AS NEEDED TO ALLOW FOR LAYERS OF STONE TO ACHIEVE FINAL GRADE 2. INSTALL EROSION CONTROL MATTING ALONG COMPLETED BANKS SUCH THAT THE EROSION CONTROL MATTING AT THE TOE OF THE BANK EXTENDS DOWN TO THE UNDER CUT ELEVATION 3. INSTALL STONE BACKFILL COMPACTED TO GRADE 4. FINAL CHANNEL BED SHAPE SHOULD BE ROUNDED SMOOTH AND CONCAVE WITH THE ELEVATION OF THE BED 0.2 FT DEEPER IN THE CENTER THAN THE EDGES NO SCALE STONE BACKFILL STONE BACKFILL BEGIN HEAD OF RIFFLE INVERT ELEV- 899.74 STATION - 12+77 BEGIN TAIL OF RIFFLE INVERT ELEV - 899.54 STATION - 12+71 rnnc�in�i RUN LENGTH POOL SECTION A -A CONSTRUCTED RIFFLE DETAIL SECTION B -B STONE BACKFILL TOP OF BANK DIRECTION OF FLOW 3 ANCHORS ON 1' CENTERS COIR FIBER MATTING ANCHORS ON - 3' CENTERS EXTEND MATTI TO NWSEL LIVE STAKE SQUARE CUT BUDS (FACING l LIVE CUTTING (1/2"-2" (12-50mm) DIAMETER ANGLE CUT 3 2 - 3 Feet (0.6 - I m) ��`r��1111111 NATURAL FIBER MATTING LIVE STAKES EXISTING/PROPOSED GROUND Il 111=II_I�Il�rllr�11�111111\� EXISTING STREAMBED BANK STABILIZATION WITH LIVE STAKES NOTE-. I, LIVE STAKES SHALL BE EVENLY SPACED 2' APART. 2. LIVE STAKES SHALL BE DRIVEN UNTIL APPROXIMATELY %40F LIVE STAKE IS WITHIN GROUND MATTING ANCHOR TRENCH IN TRENCH ON V CENTERS ANCHOR OVERLAP .� ON 1' CENTERS . 6" OVERLAY(MIN) PLAN VIEW 18" (TYP) BACKFILL -1 ANCHORS ON 3' CENTERS ANCHORS ON 1' CENTERS FLOODPLAIN/ EXISTING GROUND 6" MIN / L ANCHORS ON L/ 1' CENTERS IN TRENCH L - - MATTING SHALL BE PLACED IN TRENCH AND BACKFILLED ANCHORS ON STREAM BED 1' CENTERS TYPICAL CROSS SECTION COIR FIBER MATTING DETAIL NOT TO SCALE 2" x 2" (nominal) WOODEN STAN 1 rr 1-2 1-2 12-24 #10 STEEL REINFORCEMENT BAR 411 IAMETER BEN 4' 24" 1 (nominal) STAPLE 1" 12" ANCHOR OPTIONS C 0 II � 2 3 4 5 � triaddesigngroup Architecture I Engineering I Interior Design Triad Design Group, P.C. 4807-C Koger Boulevard Greensboro, NC 27407 Telephone 336-218-8282 Facsimile 336-218-8010 www.triad-designgroup.com NC Architecture Reg. 50709 NC Engineering Lic. C-1108 O�S\P 0'RgR0, SEAL CAR , ��11111�� °°°0000000000 N CAR °°°° =O°oF E s s °°° ,i -9°o o� o o a S EAL o� o 30521 o =o 07A F4 1 N �, ?-_ oo oo,6o 00°00000000000 ° PROFESSIONAL OF RECORD: MATTHEW W. JOHNSON, P.E. W h a Z cc O Z W W a O oC O W h Z W Uj0 J O aCU CL.O caC6 y U LU i z 0 cn � N Cal - a_ L Y 1 0-7-06-1-7 NGDOT Mk Date Description Revisions RESTORATION PLAN Date: JANUARY 201-7 Drawn: Check: Job Number: 16-OG2 Sheet: C1.5 Brad Luckey From: Matt Johnson <mjohnson@triad-designgroup.com> Sent: Thursday, December 7, 2017 4:28 PM To: Brad Luckey Subject: FW: [External] FW: Old Greensboro Road Pipe Outlet Brad - See attached Let me know if you need anything else. Thanks Matt Johnson, P.E. Civil Engineer trisdd signgmup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad-desianaroup.com From: Ana Jaramillo [mailto:AJaramillo@toknc.com] Sent: Thursday, December 07, 2017 4:26 PM To: Matt Johnson <mjohnson@triad-designgroup.com> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet I did not review the by-pass 84" —Road Pipe outlet, if the NC Dept. of Environmental Quality Division of Energy, Mineral, and Land Resources is okay with the change, it is okay for me. Thanks, Ana E. From: Matt Johnson [mailto:miohnson@triad-designgroup.com] Sent: Thursday, December 07, 2017 3:51 PM To: Ana Jaramillo <AJaramillo@toknc.com> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet Do you have any issues with the change? Wil not affect storm water design. Thanks for your help - Matt Johnson, P.E. Civil Engineer trieddlriroup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad-desianaroup.com From: Ana Jaramillo [mailto:AJaramillo@toknc.com] Sent: Thursday, December 07, 2017 3:30 PM To: Matt Johnson <miohnson@triad-designgroup.com> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet Thanks Matt. Ana E. From: Matt Johnson [maiIto:mmohnson@triad-designgroup.com] Sent: Thursday, December 07, 2017 1:16 PM To: Ana Jaramillo <AJaramillo@toknc.com> Subject: FW: [External] FW: Old Greensboro Road Pipe Outlet Hey Anna- Hope you are cloning well - We had to make a change to the 84" Culvert energy dissipater, due to requirements of the Corps. I have gotten this approved through NCDEQ, DWQ, and USACorp, and wanted you to be aware of the change. Let me know if you are OK with the attached. Thanks MafF Johnson, P.E. Civil Engineer triadd l n mup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad-design- iroup.corn From: Leonard, Shannon [mailto:shannon.leonard@ncdenr.gov] Sent: Thursday, December 07, 2017 11:36 AM To: Matt Johnson <miohnson@triad-designgroup.com> Cc: Kirchner, Chuck <chuck.kirchner@ncdenr.gov> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet Matt, You may proceed with installing the outlet protection as indicated. If the outlet protection fails to properly stabilize the channel, then it will need to be extended and/or repaired as necessary to prevent erosion of the channel. Shannon Leonard Regional Engineering Associate NC Dept. of Environmental Quality Division of Energy, Mineral, and Land Resources 336 776-9657 office shannon. leonarclc(�ncdenr.gov 450 West Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 ��''iVotF G�mperrs �� C -- Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Matt Johnson [maiIto:mmohnson@triad-designgroup.com] Sent: Thursday, December 7, 2017 8:00 AM To: Leonard, Shannon <shannon.leonard@ncdenr.gov> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to report.spam@nc.gov. Shannon - The reason we used the greater than .5(Do) on the Tail water is, the culvert is required to be embedded 1' into the stream channel, the Swale out of the culvert is 1' and the depth of the tail water in the 10 year event is at 2' based on the swale calcs. With the culvert invert of 897.66, Channel elevation of 898.66 and a tail water of 2 feet above the channel , we will be more than 0.5 Do. Hopefully this clears this issue up. I also sent the tail water with it being less than 0.5 feet and it was still within the length we are proposing. Please let me know if you are OK with this. Thanks Matt Johnson, P.E. Civil Engineer trisdd signgmup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad-designaroup.corn From: Leonard, Shannon [mailto:shannon.leonard@ncdenr.gov] Sent: Monday, December 04, 2017 12:24 PM To: Matt Johnson <miohnson@triad-designgroup.com> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet Matt, From what I am seeing on the changes, it appears you are stating there will be a tailwater condition greater than .S(Do) of culvert, which would be 42" in this case. How do you intend to obtain a 42" depth tailwater condition? While I agree that the 70' apron seems too long, that is what the numbers are showing. From what I see on the plans, it appears you would have minimum tailwater conditions below the pipe outlet (unless I'm missing something). If you want to reduce the outlet protection impact and length, you may want to consider using a plunge pool outlet below the 84" culvert. The design for a plunge pool starts on pg. 8.06.8 in the NC E&SC Design Manual. I've seen these used in the past and they work really well, especially on barrel pipe outlets below dams. We have used them below regular culvert outlets and they work real well. They also create a pool for fish to live in. Thanks Shannon Leonard Regional Engineering Associate NC Dept. of Environmental Quality Division of Energy, Mineral, and Land Resources 336 776-9657 office shannon. leonard(aD_ncdenr.gov 450 West Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Matt Johnson [maiIto:mmohnson@triad-designgroup.com] Sent: Thursday, November 30, 2017 3:28 PM To: Leonard, Shannon <shannon.leonard@ncdenr.gov> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to report.spam@nc.gov. Attached is the approved plan C23 R1 and the Revised Plan C23 R2- We wanted to reduce the length as much as possible to lower the impact of the stream. C23 R1 shows an oversized rip rap pad. My previous e-mail had the calculations sheets, but I can send again if needed. Thanks for your help on this - Matt Johnson, P.E. Civil Engineer triaddesl ngmup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad-desianaroup.com From: Leonard, Shannon [mailto:shannon.leonard@ncdenr.gov] Sent: Tuesday, November 28, 2017 7:24 AM To: Matt Johnson <miohnson@triad-designgroup.com> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet Matt, What is different from what is currently on the approved plans and this revision? I haven't had a chance to pull out the approved plans yet. Can you send a pdf of the current plan sheet (wherever change is located) and a pdf of the revision? Thanks. Shannon Leonard Regional Engineering Associate NC Dept. of Environmental Quality Division of Energy, Mineral, and Land Resources 336 776-9657 office shannon. leonard(cDncdenr.gov 450 West Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 • *�COMIM Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Matt Johnson [mailto:miohnson@triad-designgroup.com] Sent: Monday, November 27, 2017 1:53 PM To: Leonard, Shannon <shannon.leonard@ncdenr.gov> Subject: [External] FW: Old Greensboro Road Pipe Outlet CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to report.spam@nc.gov. Shannon - Hope you had a great Thanksgiving! Wanted to check with you to make sure you are OK with the Rip Rap liner at the culvert crossing on the Old Greensboro road project. If you would just let me know when you have had a chance to look at the attached. Thanks for your help - Matt Johnson, P.E. Civil Engineer triedd i n rvup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad-designgroup.com From: Matt Johnson Sent: Wednesday, November 15, 2017 2:43 PM To: 'Leonard, Shannon' <shannon.leonard@ncdenr.gov> Subject: Old Greensboro Road Pipe Outlet Hey Shannon - Hope you are doing well - We have made a revision to the pipe outlet energy dissipater at the Stream Crossing on Old Greensboro road to meet a requirement from the USACE and DWQ. I have shown the sizing for the 10 year and the 100 year events at the stream crossing based off the NCDENR Deign Manual, and used the 100 year event for a factor of safety. I have attached the revised Calcs and the revised plan sheet showing the change in energy dissipater size. If you would please let me know if you are OK with the attached. Thanks for your help on this. Matt Johnson, P.E. Civil Engineer triedtllnrvup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad-design- iroup.com This email message, and any attachment(s) hereto, as well as any email message(s) that may be sent in response to it, may be considered Public Record, and as such are subject to requests for review. If you are not the intended recipient, please destroy this message and inform the sender immediately. The information contained in this email may be confidential and, in any event, is intended only for the use of the entity or individual to whom it is addressed. Thank you. Brad Luckey From: Matt Johnson <mjohnson@triad-designgroup.com> Sent: Thursday, December 7, 2017 11:46 AM To: Brad Luckey Subject: FW: [External] FW: Old Greensboro Road Pipe Outlet Brad - See e-mail below on the outlet protection at the pipe culvert. Let me know if you have any questions or need anything else. Thanks Matt Johnson, P.E. Civil Engineer trisdd signgmup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 wwwAriad-designgroup.corn From: Leonard, Shannon [mailto:shannon.leonard@ncdenr.gov] Sent: Thursday, December 07, 2017 11:36 AM To: Matt Johnson <mjohnson@triad-designgroup.com> Cc: Kirchner, Chuck <chuck.kirchner@ncdenr.gov> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet Matt, You may proceed with installing the outlet protection as indicated. If the outlet protection fails to properly stabilize the channel, then it will need to be extended and/or repaired as necessary to prevent erosion of the channel. Shannon Leonard Regional Engineering Associate NC Dept. of Environmental Quality Division of Energy, Mineral, and Land Resources 336 776-9657 office shannon. leonard(a)ncdenr.gov 450 West Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Matt Johnson [mailto:miohnson@triad-designgroup.com] Sent: Thursday, December 7, 2017 8:00 AM To: Leonard, Shannon <shannon.leonard@ncdenr.gov> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to report.spam@nc.gov. Shannon - The reason we used the greater than .5(Do) on the Tail water is, the culvert is required to be embedded 1' into the stream channel, the swale out of the culvert is 1' and the depth of the tail water in the 10 year event is at 2' based on the swale calcs. With the culvert invert of 897.66, Channel elevation of 898.66 and a tail water of 2 feet above the channel , we will be more than 0.5 Do. Hopefully this clears this issue up. I also sent the tail water with it being less than 0.5 feet and it was still within the length we are proposing. Please let me know if you are OK with this. Thanks Matt Johnson, P.E. Civil Engineer triedd igngmup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad desianaroup.com From: Leonard, Shannon [mailto:shannon.leonard@ncdenr.gov] Sent: Monday, December 04, 2017 12:24 PM To: Matt Johnson <miohnson@triad-designgroup.com> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet Matt, From what I am seeing on the changes, it appears you are stating there will be a tailwater condition greater than .5(Do) of culvert, which would be 42" in this case. How do you intend to obtain a 42" depth tailwater condition? While I agree that the 70' apron seems too long, that is what the numbers are showing. From what I see on the plans, it appears you would have minimum tailwater conditions below the pipe outlet (unless I'm missing something). If you want to reduce the outlet protection impact and length, you may want to consider using a plunge pool outlet below the 84" culvert. The design for a plunge pool starts on pg. 8.06.8 in the NC E&SC Design Manual. I've seen these used in the past and they work really well, especially on barrel pipe outlets below dams. We have used them below regular culvert outlets and they work real well. They also create a pool for fish to live in. Thanks. Shannon Leonard Regional Engineering Associate NC Dept. of Environmental Quality Division of Energy, Mineral, and Land Resources 336 776-9657 office shannon.leonard(@ncdenr.gov 450 West Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 -ov" Otl Golitlr" %, Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Matt Johnson [mailto:miohnson@triad-designgroup.com] Sent: Thursday, November 30, 2017 3:28 PM To: Leonard, Shannon <shannon.leonard@ncdenr.gov> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to report.spam@nc.gov. Attached is the approved plan C23 R1 and the Revised Plan C23 R2- We wanted to reduce the length as much as possible to lower the impact of the stream. C23 R1 shows an oversized rip rap pad. My previous e-mail had the calculations sheets, but I can send again if needed. Thanks for your help on this - Malt Johnson, P.E. Civil Engineer trisddesignrup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad-desianciroup.com From: Leonard, Shannon [mailto:shannon.leonard@ncdenr.gov] Sent: Tuesday, November 28, 2017 7:24 AM To: Matt Johnson <miohnson@triad-designgroup.com> Subject: RE: [External] FW: Old Greensboro Road Pipe Outlet Matt, What is different from what is currently on the approved plans and this revision? I haven't had a chance to pull out the approved plans yet. Can you send a pdf of the current plan sheet (wherever change is located) and a pdf of the revision? Thanks. Shannon Leonard Regional Engineering Associate NC Dept. of Environmental Quality Division of Energy, Mineral, and Land Resources 336 776-9657 office shannon. leonard(a-)_ncdenr.gov 450 West Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Matt Johnson [mailto:miohnson@triad-designgroup.com] Sent: Monday, November 27, 2017 1:53 PM To: Leonard, Shannon <shannon.leonard@ncdenr.gov> Subject: [External] FW: Old Greensboro Road Pipe Outlet CAUTION: External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to report.spam@nc.gov. Shannon - Hope you had a great Thanksgiving! Wanted to check with you to make sure you are OK with the Rip Rap liner at the culvert crossing on the Old Greensboro road project. If you would just let me know when you have had a chance to look at the attached. Thanks for your help- MafF Johnson, P.E. Civil Engineer triedd igngroup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad-desianaroup.com From: Matt Johnson Sent: Wednesday, November 15, 2017 2:43 PM To: 'Leonard, Shannon' <shannon.leonard@ncdenr.gov> Subject: Old Greensboro Road Pipe Outlet Hey Shannon - Hope you are doing well - We have made a revision to the pipe outlet energy dissipater at the Stream Crossing on Old Greensboro road to meet a requirement from the USACE and DWQ. I have shown the sizing for the 10 year and the 100 year events at the stream crossing based off the NCDENR Deign Manual, and used the 100 year event for a factor of safety. I have attached the revised Calcs and the revised plan sheet showing the change in energy dissipater size. If you would please let me know if you are OK with the attached. Thanks for your help on this. Matt Johnson, P.E. Civil Engineer trisdd sl ngmup 4807-C Koger Boulevard Greensboro, NC 27407 O: 336-218-8282 F: 336-218-8010 www.triad-desianaroup.com