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Home My WebLink About20190392 Ver 1_More Information Received_20190530Staff Review Does this application have all the attachments needed to accept it into the review process? r Yes r No ID#* Version* 1 20190392 Is this project a public transportation project?* r Yes r No Reviewer List:* Paul Wojoski:EADS\pavtojoski Select Reviewing Office:* Central Office - (919) 707-9000 Submittal Type:* Application Attachments Does this project require a request for payment to be sent?* r Yes r No Project Submittal Form Please note: fields marked with a red asterisk below are required. You will not be able to submit the form until all mandatory questions are answered. Project Type: r New Project r Pre -Application Submittal r More Information Response r Other Agency Comments r For the Record Only (Courtesy Copy) New Project - Please check the new project type if you are trying to submit a new project that needs an official approval decision. Pre -Application Submittal - Please check the pre -application submittal if you just want feedback on your submittal and do not have the expectation that your submittal will be considered a complete application requiring a formal decision. More Information Response - Please check this type if you are responding to a request for information from staff and you have and ID# and version for this response. Other Agency Comments - Please check this if you are submitting comments on an existing project. Is this supplemental information that needs to be sent to the Corps?* r Yes r No Project Contact Information Name: Matthew Boatwright Who is subrritting the information? Email Address: matthew.boatwright@rmf.com Project Information Existing ID #: Existing Version: 20190392 1 20170001 (no dashes) Project Name: ECM 1A High Temperature Hot Water (HTHW) Distribution System Replacement Is this a public transportation project? r Yes r No Is the project located within a NC DCM Area of Environmental Concern (AEC)? r Yes r No r Unknown County (ies) Durham Please upload all files that need to be submited. Click the upload button or drag and drop files here to attach docurrent 2019-0392 EPA HTHW - Add Info Letter - 126.22KB Responses.pdf Buffer Impacts totals table 3-Revised.pdf 18KB EPA HTHW - PCN Dwgs Revised R2.pdf 6.91 MB Figure 4c Impacts -revised 2019 05-29.pdf 382.16KB Only pdf or k r z files are accepted. Describe the attachments: Paul, We have attached a narrative response to your add info letter, and have updated our drawings and impact tables as discussed over the past few weeks. Thanks for working with us and please give me a call or email if you have any questions about the way we addressed your concerns. Thanks, Matt Boatwright 919-941-9876 matthew.boatwright@rmf.com V By checking the box and signing box below, I certify that: • I have given true, accurate, and complete information on this form; • I agree that submission of this form is a "transaction" subject to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act") • I agree to conduct this transaction by electronic means pursuant to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act'); • I understand that an electronic signature has the same legal effect and can be enforced in the same way as a written signature; AND • I intend to electronically sign and submit the online form." Signature: M.4M'O.I.c.4H Submittal Date: 05/30/2019 Is filled in autorratically. rfrr RM , F Engineering May 30, 2019 Paul Wojoski 401 & Buffer Permitting Branch Division of Water Resources Department of Environmental Quality RE: Request for Additional Information — Responses ECM 1A High Temperature Hot Water (HTHW) Distribution System Replacement DW R: 19-0392 Durham County Mr. Wojoski, Please see below responses to the additional information request based on our phone call discussion on 5/13/2019, and follow up emails on 5/14 and 5/21 regarding utilizing the temporary culverts at all crossings, and only utilizing a pump around approach during the stream stabilization. Part of the proposed High Temperature Hot Water (HTHW) Supply and Return Line is to be constructed in an existing easement. Please show the location and width of this easement. Do buffer impacts presently exist for the current easement and associated utilities? RMF Response: The current easement above the existing HTHW and CHW utility corridor is approximately 100' wide and defined by the tree line. Our understanding is that this is not a formal documented easement, but it is a maintenance corridor that was established when the lines were installed and has been maintained ever since that time as part of a formal maintenance plan. The existing corridor does cross several of the streams shown on the Durham County Soil Survey, but our understanding is that the existing corridor existed prior to the implementation of the buffers rules, and that there is no documented buffer impacts associated with the existing utilities. Please provide plan and profile exhibits and information showing how the coffer dams and pump around will be installed where the open -cut method will be utilized to cross streams. RMF Response: The design intent was for the contractor to install a long enough section of temporary stream piping/culvert for them to bypass both the utility trench and access road. All of the stream crossings other than UTI are intermittent and appear to only have flow after rain events during the late summer and fall (when the project is expected to be constructed) and it is expected that a pump around will only be required for the UTI crossing and stabilization. Based on our discussion and your confirming email on 5/21, we will provide a plan and profile of the pump around at the stream stabilization only. Sheet C-503 shows four (4) temporary stream crossings, and sheet C-502 shows one (1) temporary crossing (reference Sheet C-507 for construction details). Please revise the four (4) temporary crossings to show the impact as open cut utility installation with pump around. Please update impacts tables as necessary. rfrr RMF Engineering RMF Response: It is desired for all of the crossings to remain temporary culverts. The access road that crosses these streams will need to remain open for the duration of the project as the contractor will need it to access the Central Utility Plant for mechanical and controls upgrades. It is preferred to establish the temporary culverts at the beginning of the project and stabilize the crossings instead of having four pump around setups that must be up and running with temporary generators and constantly maintained for several months. We believe that the temporary culverts will reduce the risk of a pump failing in the middle of the night and runoff washing out part of a trench or the access road. Based on our discussion and your confirming email on 5/21, we will provide a plan and profile of the pump around at the stream stabilization only. 4. Impact S5 on the pre -construction notification (PCN) and Sheet C-509 shows proposed stream bank stabilization. a. Please revise your impact tables to show this work as permanent impact. RMF Response: Impact tables will be updated to show this work as permanent impact. b. What is the drainage area of this stream? RMF Response: Approximately 42 acres. c. The Division has concerns with the large quantity of rock proposed as toe protection and concrete ballasts as footers for the log steps. Using soil geolifts with wood footers (such as willow/dogwood) is a preferred method of toe protection. Also a design that considers riffles with 2-3 alternating rock/log step pools (2-3 depending on slope/drainage area) is preferable. Please contact the Division to discuss design. RMF Response: We have revised our stream stabilization detail to require the banks to be stabilized with geolifts and live cuttings instead of stone. We have kept the log steps in an effort to utilize as many of the existing trees that must be removed for the utility corridor as possible instead of using all rock steps. There will still be some stone/boulders required to help secure the logs into place and to function as splash blocks on the downstream sides of the logs. Please revise your exhibits to show the permanent buffer impacts in one color and the temporary buffer impacts in a different color. As presented, the boundaries of the permanent and temporary impacts are unclear. RMF Response: Boundaries have been updated. Sincerely, RMF Engineering, Inc. Matthew Boatwright, PE Project Engineer ECM 1A High Temperature Hot Water (HTHW) Distribution System Replacement Revised Buffer Impact Table (May 29, 2019) 6b. Impact Type 6c. Per or Temp 6d. Stream name 5e. Buffer mitigation required 6f. Zone 1 Impact 6g. Zone 2 Impact Allowable T UT1 to Burdens Creek No 2,275 1,400 (square feet) (square feet) Allowable P UT1 to Burdens Creek No 600 400 (square feet) (square feet) Allowable T ditch to Burdens Creek No 1,825 1,525 (square feet) (square feet) Allowable P ditch to Burdens Creek No 600 400 (square feet) (square feet) Allowable T ditch to Burdens Creek No 2,170 1,295 (square feet) (square feet) Allowable T UT2 to Burdens Creek No 2,350 1,490 (square feet) (square feet) Allowable P UT2 to Burdens Creek No 300 200 (square feet) (square feet) Allowable T UT3 to Burdens Creek No 3,075 2,050 (square feet) (square feet) Allowable P UT1 to Burdens Creek No 3,600 0 (square feet) (square feet) 6h. Total buffer impacts: Zone 1 Zone 2 Total Temporary impacts 11,695 7,760 Zone 1 Zone 2 Total Perment impacts 5,100 1,000 Zone 1 Zone 2 Total combined buffer impacts 16,795 8,760 00 N 0 Q- V) U U W 0 0 Q- Q- 0 0 V) I C Im 2 DRAWING LEGEND EXISTING CONDITIONS LEGEND SYMBOL DESCRIPTION SYMBOL DESCRIPTION [�Z� — EX/STING BUILDINGHTHW EX. HIGH TEMPERATURE HOT WATER SUPPLY/RETURN HTH W EX. CURB AND GUTTER 6" WATER 3 M 5 TEST HOLE TABLE TEST HOLE # NORTHING W EX. WATER PIPING UTILITY SIZE COVER 775042.16 2036635.21 STORM N/A N/A Z TH-202 X EX. FENCE POWER 2" & 1" PVC 311.89 \\ _�_-- \_� ----_ \ \ I 00CD / o w --- \ \ \ 1 I O U ui I o •3 q o i; EX.ASPHALTPA VEMENT 0 00 --- ---------- ------------ `��\ o I I � m � 24"RCP SD EX. STORM DRAIN 0 �� _—----- \ \ \ \ \ 1 I I I /� I I I I I / — / Z Q n EX. WALL U m n N IDEX. 0 ---- _ _---___ a N c E c W ami N � \\ \ \ I I M m cm OS D EX. 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Sal/� 11 I I / 1 / l =l = �l El El El \ RAQ=309I77' , I , / 1 I I 1 q' l l / / / / IN(E) 416.517' / / I I I I I I / l / EX.SgMH / / / / p \ r 4 RIM 324.99 / / / \ \ \ �'TNWJ� 007/ I I I I SOlN(�311/30' /S\\\\\\\�----305---' \\tel I I I / / l / OYT(W)1308.39' / /l I STC D \ \ \ \ \ \ \ \ \ \ \ \� —// / /// /// loll //' l=lo / // / IN STORAGE BUILDING 106 \\\\\\ //� loll 1 / \ \ \ \ loll loll GRAPHIC SCALE I I / I I / / = y� v/ � I 2 \ \ \ \ \ \ \ \ /1 1#11 / / / 20 10 0 20 40 N SCALE: 1"=2i MATCHLINE - SEE C-001 FOR CONTINUATION UNIT OF MEASURE: FEET CUSTOMER PRJ/DWG #: ESG PROPRIETARY JN yED ST,A)z, Z LU 2 � O� '�i�2TgC PROI�G�` rff 11 RMF ENGINEERING, INC. 8081 Arco Corporate Drive, Suite 300 Raleigh, NC 27617 NC License No. C-1125 U W z � � >Q M O 0 o<0 LLJ U (% W z N O m �Q t� �Q� (n O � O 6 cc .- a Q w ~ I 00CD r~ o w c c O U ui I o •3 q o i; 0 0 00 0 o O � � m 1� 0 N U W z � � >Q M `: 0 o<0 LLJ U (% W z N O m �Q t� �Q� (n w Oa 6 cc � a Q w ~ I 00CD w o w c c O U ui I o •3 q o i; 0 0 00 0 o a a- m 0 N Z n J U m n N T m cf) 0 LU -0 -0 a N c E c W ami N � M m cm D U �Q N w wz C 0 p 0 Q � U a o o' Uo U W z � � >Q w Q w QZ 0 o<0 LLJ U (% W z � z� w o O m �Q t� �Q� (n w Oa 6 cc a w O C7 z w ~ I 00CD w o w c c O U ui I �' •3 q o i; 2 0 0 00 0 o a a- m N n J U m n N T m cf) LU -0 -0 a N E c W ami � M Q �Q wz J J 0 p z� Q � U o' Uo N Qz 6 w V) w a U � U CD M W a00 0 0Nos �UriLnLn azoo cgZrno+ a LnLn o<to%0 N W 9 LT U W z � � w Q w QZ 0 o<0 LLJ U (% W z � z� w o O m �Q t� �Q� z = w Oa Joaz Q a w O C7 z w ~ N a �U= m 0w= w z w Q w �. w r Certified by: Sheet reference number: C-002 rn s 0 0 0 U a 0 V) m ui c 1z I C 00 N 0 Q- V) A U w 0 0 Q- V) 1 1 2 1 3 1 4 1 5 MATCHLINE - SEE C-004 FOR CONTINUATION DRAWING LEGEND \ �\ � � \\ � �\ ZONEX \14"PINE ��\ `\\ ��---- FLOODPLAIN EXISTING CONDITIONS LEGEND SYMBOL DESCRIPTION SYMBOL DESCRIPTION _ 15"MAP � 118 "PINE EX. TREELINE \\ \\ \ \ \ \ \\ 15"PINE �� _ --300---'T� _----- EXISTINGBUILDING\\ \ \ �\ `_\ \ \ � �•_ --__ EX. SHRUBS/BUSHES \\� \ \ \ \\ \ \ \ \ \ \ \ \ ` 50' STREAM ' • .— - - — - �` EX. CURB AND GUTTER EX. SIGN \�� \�\ \ 1SA<E \_\ \ \ \ `\ ` TZIFFE7 X EX. FENCE EX. LIGHT POLE \� \\\ ��_- _ ��\\ \ \0 \ \ - _ \\ \ ��-- \ 30 STREAM EX, ASPHAL T PA VEMENT \� \\\� %// i _ \ `\\\\ \ 18, BUFFERCHW EX. CHILLED WATER SUPPLY/RETURN �S\\\� - _viii �i� \ STREAm CHW \\��` � =�i� \\�� \`\\\ \ \ �ONTROL POINT \ � PINE 1 17 -Pt \ �-� 'Z 15 PINE\ - - - - - EX. STREAM LIMITS BUFFER \� `\\\ �� \ N• 775197.78' \ \ \\ �\ \�� \ - \ 17 PINE HTHW �` ��\ E. 37711.16' EX. HIGH TEMPERATURE HEATING WATER SUPPLY/RETURN \� '"� �� EX. FLOODPLAIN HTH W \\ Z: 2 2�41 _ 295 NE EX. CONCRETE SIDEWALK 6" WATER / I I I 12"MAP I \��\�, / �\ I J 1 >\ %i-\�E `\ - - 14'"MAT- - - _ - - EX. WATER PIPING / 12 \ I I \z\\ \\\ / / /J / - _ - - - - - - - - - EX. INTERMEDIATE CONTOUR \\x PER/NNEAL \ 2 "PVC POWER 0 �� /\ . = \ %\ - - - - - \� \ STREAM UT -1 EX. POWER CONDUIT �' �� _ / \� )r / �� - _ ---450 ---- EX. INDEX CONTOUR p ' �� \ \\ �� i �i'��\�\\� 24"MAP ��11 1 12"MAP \�� % / ��'_/\\ �---�\ X 456 EX. SPOT ELEVATION / 111"'-� i \ �� I - - / / �\ \ TH-01 / \ \ iii/ 32"MA �� _ 15 MIP I l \ \\\ \ TEST HOLE ` \\�_ �\\\ .- C4-\ \ �- EX.TREE // / �.�� 1 24"MAP �' \ 1-1 / / � � 12 MAP � 1 12 FINE 15"PINE / \ 1 18 PINE � i' 15"P/NE �`15"MAP I � O Q TEST HOLE TABLE TEST HOLE # NORTHING EASTING UTILITY UTILITY SIZE TOP COVER TH-301* 775003.99 2037306.15 CONDENSATE N/A N/A N/A // // ice„ \ \ ��• 12"MAP 12 MAS/� (D , / BUFFER • 15 "MAP 111 15 P/NE \ ' 12 "MAP l / 14 "P/N i \ \ \ \\ \\ \\ \\ \\ \ \\ \ \ \ \ \ \ \ \ ,// /�/ --_/ \ 1 I �\=L• y ' 12"MAP /'-1.001 z G\ \ \ \ \ \ \ \ I 1 \ \ \ \ \��/ ,/ - \ 1 `/-_••�-- ` / 50'5TREAM *SURVEYOR WAS NOTABLE TO LOCATE CONDENSATE LINE. \ \ \ \ \ \ \ \ I 1 I I \ \ \ \ \ / f \ \ \ I -"' • ` _ - -� _ BUFFER 15 — --------- O N, 1-9 -12'"P-INE MAP LL 0��' 6YREEN,6"P/NE \`--Z-ON-EX / 18 "MAP O �8tNq / WAZCHE- D O 12"MAP / FLOOD PLAIN 6"PINE --- ------------- -�- 'PINE i SPINE/ \ \\ \ \ \ _ /I /i I I \ ------ LU 6CED/ W / 4CED6 8P/Cn o, NE • / '/ ------ _ —_—�---` — - 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/ 1-1 1-1 i CQUTR��xT- \ 4PINE /8 P/NE / 10 I 1 - / - - - _ _ / --N: 775146.3' /1 5 SNE_3 E. 2036821.66' CONTROL PO/NT 14 INE / 1.11 //------------ Z: 319.73' 4„rED 6„` N775012.60' / // // --- TREEEI.2037547.83 2 PINE /-------/—/ - / / -/''/- '-/ / / -- _ � r — /- - - - /-/\ i /-_ , _ -- — — -C 302.07 1811 INE 1 PINE /Cy 30'STREAMI loo, /'14NE/ 6P/ E 6'�l TREE BUFFER / o., PINE 5 12'TREE 50'STREAM �2MAP 30 l000 BUFFER 30'STREAM i14” INE BUFFER 12P 1 IXE / --� 50'STREAM 12"MAP I / i2"TREE BUFFER//, I 1 I I / / 12"MAP yi'`\ 8TREE �15 RI 8 TREE 14 0/ 12'P INE / TRE' � 0 12 "TREE 10\ / I C (D / 12 PINE 1ZINE 14 PAE \"CED � A-rREEj.P/N 44 "TREE UM1" NE 12'pINE/1E / 3ti10' I / loll . 1� PINE/ / 4/TREE � 20 PIN /\ l0000 4E / / / fvx/ l000,/ / /' ' ' / /2"PVCRECLAIMED/ 30 / CONDEIVSATE FRO EPA cy B ULDE� / / / "ITO CUP.I CONTRAOR / TL/NE -- - - ---- // / TO CONfIRM LOC TION / /// / / ' '------ 315 ' 4� lo, // ,/ / // / oo // / / w / �/, I I I I 1 I 13GUM / le / RIP // RAP / ,/// //z / // / / 06y, 4/ ROCK / / \ duTCR / / / / IN/ // IN, / / / / // / C loo'l2"PIE "1 / /z // i // 305 / / , / / / y��/ / /Z // / / // / / // / / 17” E / / / 320 /y , / // 6 PINE , 100, / / 13VINE / /O \ Y I I \I / l 1 / / / -- '� \ / O -/ ;,�. \\�\ \\\ I \J // / / / /OUTOP / � U o\ \\C/Y / / --_— LU W / loo, CbWoL P6NT / / N: 774$1.36\ \ y/z E: 203752 28' / / Z.- 314.20 1y0i1 I / / \ // tti I /yT)v 11 /STEM\ \ \ EXHIUSPIRES\\\ \ \ 1 1 �� / /-fNI ��' I / /NT/Y4 W � / / C WITNESS I 1 I 1 I I/ 1 I I I I POST /R�P -' 3_-_ 2— - ' 5 ///// loo, ,loo, /// v/ // GRAPHIC SCALE ,,/ loo, --- �— - - , 20 10 0 20 40 N'SCALE: 1"=20'-O" UNIT OF MEASURE: FEET CUSTOMER PRJ/DWG #: ESG PROPRIETARY J\4\QED ST,QTFs �� 7z LU O � 2 � o� C PRO1�G�` rff I RMF ENGINEERING, INC. 8081 Arco Corporate Drive, Suite 300 Raleigh, NC 27617 NC License No. C-1125 U W z FLLJ :2 � M O � o<0 Ld W z N U � 0- ) Q z LU O � o C � a Q w ~ I 00 w O LU .; CD cc ' •F-1 a ui I o •3 o2 w 0 (� 0 �CAN)) 0 o O� � �m a� a� 0 U W z FLLJ :2 >Q M `: 0 o<0 Ld U (% W z N U � 0- ) Q z LU w oa o C � a Q w ~ I 00 w o LU w CD C w �. O U ui I o •3 o2 0 0 0 0 0 o a s �m 0 cNc G Z J U co N Tm a C/) 0 LU -0 -0 0 N c E c W ami N 4 M Y a m D U �Q N N wz C 0 p 0 g � U a o o' U W z FLLJ :2 >Q w Q w QZ 0 o<0 Ld U (% W z F- - D W 0 :2 U � 0- ) Q z LU w oa o C a w 0 z w ~ I 00 w o LU w CD C w �. O U ui I �' •3 o2 0 0 0 0 0 o a s �m cNc G J U co N Tm a C/) LU -0 -0 0 N E c W ami � M Y Q �Q wz J J 0 p z� g � U o' �o N Qz w o V) w a U N � U N d d CD M W a o00 a U� D �U�� az00 �Z0)ON a LnLn LU o�� N W �E U - U W z FLLJ :2 w Q w QZ 0 o<0 Ld U (% W z F- - D W 0 :2 U � 0- ) Q z LU w oa JC)0 Q a w 0 z w ~ Na �U= m 0 W = LU w zwQ o w �. w01= Certified by: Sheet reference number: C-003 rn 0 0 0 U a 0 0 00 00 ui 0 c 1z ro 0 O V) U U W O cr 0 N w I C I Im 60 30 0 60 120 SCALE: 1"=60'-0" UNIT OF MEASURE: FEET CUSTOMER PRJ/DWG #: DISCOVERY DURING CONSTRUCTION AND UPON COMPLETION OF WORK, CONTRACTOR SHALL REMOVE ALL EVIDENCE OF WORK INCLUDING DIRT, ASPHALT, TIRE TRACKS, ETC. AND LEAVE THE SITE IN A CLEAN AND ORDERLY CONDITION. DURING AND UPON COMPLETION, CONTRACTOR SHALL SWEEP ASPHALT PAVEMENT AND CONCRETE SIDEWALK, AND KEEP THE SITE INA NEAT AND ORDERLY CONDITION. ALL MUD AND CONSTRUCTION DEBRIS IS TO BE REMOVED IMMEDIATELY FROM ROAD. CONTRACTOR MAY INSTALL STABILIZED CONSTRUCTION ENTRANCE TO SITE AS REQUIRED. ENTRANCE MAY NOT IMPEDE REQUIRED TRAFFIC LANES TO REMAIN OPEN. INSTALL ALL EROSION AND SEDIMENT CONTROL MEASURES PRIOR TO BEGINNING ANY LAND DISTURBING ACTIVITY. CONTRACTOR IS RESPONSIBLE FOR INSTALLING ADDITIONAL EROSION AND SEDIMENT CONTROL DEVICES TO CONTAIN SEDIMENT WITHIN THE PROTECTED WORK AREA AS NEEDED. TREE PROTECTION IS REQUIRED FOR ALL TREES NEAR CONSTRUCTION NOT IDENTIFIED TO BE REMOVED ON THE C100 DRAWINGS. CONTRACTOR IS RESPONSIBLE FOR REPLACING ANY TREE THAT IS DAMAGED DURING CONSTRUCTION THAT IS NOT IDENTIFIED FOR REMOVAL. EQUIPMENT UTILIZED DURING THE CONSTRUCTION ACTIVITY ON SITE MUST BE OPERATED AND MAINTAINED IN SUCH A MANNER AS TO PREVENT THE POTENTIAL OR ACTUAL POLLUTION OF THE SURFACE OR GROUND WATERS. FUELS, LUBRICANTS, COOLANTS, AND HYDRAULIC FLUIDS, OR ANY OTHER PETROLEUM PRODUCTS, SHALL NOT BE DISCHARGED ONTO THE GROUND OR INTO SURFACE WATERS. SPENT FLUIDS SHALL BE CLEANED UP AND DISPOSED OF IN A MANNER SO AS NOT TO ENTER THE WATERS, SURFACE OR GROUND. CONCRETE MATERIALS ONSITE, INCLUDING EXCESS CONCRETE, MUST BE CONTROLLED AND MANAGED TO AVOID CONTACT WITH SURFACE WATERS, WETLANDS, OR BUFFERS. NO CONCRETE OR CEMENT SLURRY SHALL BE DISCHARGED FROM THE SITE. ALL DISTURBED AREAS SHALL BE PROVIDED TEMPORARY OR PERMANENT SOIL STABILIZATION WITH GROUND COVER AS SOON AS PRACTICAL AND WITHIN 14 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY, WITH THE EXCEPTION OF THE AREAS MARKED ON THE PLANS THAT REQUIRE SOIL STABILIZATION WITHIN 7 DAYS. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CHECKED AND REPAIRED AS NECESSARY WITHIN 24 HOURS OF ANY STORM EVENT OF GREATER THAN .50 INCHES OF RAIN PER 24 HOUR PERIOD. CONTACT ROBBIE DAVIS FOR ALL EROSION AND SEDIMENT CONTROL MEASURE MAINTENANCE CONCERNS DAVIS. ROBBIE@EPA.GOV, PHONE - 919-541-4390, CELL - 919-257-778 LAYDOWN AREAS TO BE APPROVED BY COR AT PRECONSTRUCTION MEETING. CONTRACTOR SHALL LAY DOWN EQUIPMENT AND MATERIALS ADJACENT TO THIS TRENCH AND PROJECT AREA WHERE POSSIBLE TO MINIMIZE CONSTRUCTION TRAFFIC ON CAMPUS ROADS. IF AN OFFSITE SOIL SPOIL OR BORROW SITE IS UTILIZED, THEN THE DISTURBED AREA FOR THE SPOIL/BORROW SITE MUST BE INCLUDED IN THE LAND -DISTURBANCE PLAN AND PERMIT UNLESS THE SPOIL/BORROW SITE ALREADY HAS A LAND -DISTURBANCE PERMIT. CONTRACTOR IS RESPONSIBLE FOR SUBMITTING AND OBTAINING NECESSARY EROSION CONTROL PERMITS FROM DURHAM COUNTY. CONTRACTOR IS RESPONSIBLE FOR PAYING ALL PERMITTING AND LAND DISTURBANCE FEES. CONTRACTOR IS RESPONSIBLE FOR DEWATERING TRENCH AT ALL TIMES. CONTRACTOR SHALL DISCHARGE WATER FROM THE TRENCH TO SEDIMENT BAGS PER DETAIL B ON C-506 OR TO SEDIMENT TANKS PER THE SPECIFICATIONS. SEDIMENT BAGS SHALL BE PLACED IN STABILIZED AND VEGETATED AREAS DOWNSTREAM OF CONSTRUCTION. UTILIZE THE PROPOSED STABILIZED CONSTRUCTION ENTRANCE OFF LAKEVIEW DRIVE EAST OF THE SITE FOR SITE ACCESS. UTILIZE EPA GATES ONLY FOR ENTERING AND EXITING THE CAMPUS. CONTRACTOR IS RESPONSIBLE FOR INTERMITTENTLY CLEANING ROADS CONTRACTOR SHALL PROVIDE PLASTIC ORANGE MESH SAFETY FENCING AROUND PERIMETER OF ALL EXCAVATIONS AND MATERIAL STOCKPILES DURING CONSTRUCTION. PROPRIETARY JN y f -D ST'A)z' Z LU 2 � O� C PRO1�G�` rff I RMF ENGINEERING, INC. 8081 Arco Corporate Drive, Suite 300 Raleigh, NC 27617 NC License No. C-1125 0 U 2 rawd Q Z � :2 J M `a O O<0 w w U N z � O (n Q � o25 a O C Z w 00 M a Q ZQw0 I 00 w O U = ~ 0 C w 0 C O U u;I �' •3 a C, M 00 O 0 0 0 0 o a s T m M O cN C T J U T coa N m L7 0 n LU -o n -o a V) C + c W N_ O D (n M a M D •- U N N L LJ Z C) C 0 O O Q Q � U Y Q O Q Z � :2 J L LJ Q W QZ 3: U O O<0 w w U (% W LLj z � O (n Q � o25 a O C Z w 00 J p a -Z N � ZQw0 I 00 w O U = ~ 0 C w 0 C O U u;I �' •3 a C, M 2 0 0 0 0 0 o a s T m � cN C T J U T coa N m L7 n LU -o n -o a J + c W O D (n Q Q L LJ Z J J 0 O Z � Q Q � U D' O Q Z ;; w V) w a U N � U N O O d d O O M w 00 a U� D p o 0 �U�� az00 C�Ernrn LU . LU z Ln Ln o<to%0 N W li U Of W Z � :2 L LJ Q W QZ 3: U O O<0 w w U (% W LLj z � O N Q Q � o25 a w Z w 00 J p a -Z N � ZQw0 =z LiJ �U=m w O JU E Q = ~ LayJ _ V) >wQ w 0 Z W >^ L LJ Certified by: Sheet reference number: C-500 rn s v 0 O U a a V) m E c 1z I C 2 DRAWING LEGEND EROSION AND SEDIMENT CONTROL LEGEND SYMBOL DESCRIPTION LOD LIMIT OF DISTURBANCE SF TP SILT FENCE /TREE PROTECTION SF SILT FENCE 1 TP TREE PROTECTION I .J SFO SILT FENCE OUTLET N TEMPORARY GRAVEL 12" SD TEMPORARY STORM DRAIN 3 M 5 —__—__ _—----------- -- — \ \ ,I O \ \ \ \ \ I III � LL _--------- --- \\ \ \ \ 1 I I I I I I I I I / /\� \ \ \ \ / \ \ \ 0 Ln _--------- \ \ I I I I I 1 \ \\ LU DRAWING NOTES: / /// /// // ---------------\ \\ \\\ \\ \\ \\ / � / //� �----/295, 1. WHEN TRENCH IS NOT OPEN IN AN AREA, PROVIDE SILT FENCE ACROSS CORRIDOR UPSTREAM OF THE I ' / / /' �' — _ _ — — — — — — — — — \ \ \\ \ \ \ \ 1 I / / i' i' i \ \ I I I \ \ \ \ \ \ W DRAINAGE DITCH. TYPICAL FOR ALL AREAS ALONG THE CORRIDOR. 2. PROVIDE TEMPORARY MEANS OF CROSSING DRAINAGE DITCH WITHOUT PERMANENTLY DAMAGING AREA I I I l / / // // // /' / / i' / / — — — — — -. i� OR IMPACTING LAND DOWNSTREAM. REFER TO DETAIL A/C 507 FOR CROSSING DETAILS. AFTER I I / / / / i / \ \ 1 I I / — _ ' ' I I 1 \ \ \ CONSTRUCTION IS COMPLETE, REMOVE TEMPORARY STORM LINES AND ROCK AND RESTORE DITCH TO I I I I / / / / / / / / / , /' \\ \\ \ \ \ I I 1 I I I I I I \\ '� / /� I I I I \\ \ Q EXISTING CONDITION. \ -300- ,-305 300',,305 \�\ \ \ \\ \\ \ \ \\ \\ ---_ / loe loo, \ \ \ \ \ \ �� \ \ \ \ \ \ \ \ \ \ \ \ \ I I 1-1 \ \ \ \ 1-1\ \ \ \ \ \ \ I \\ \ \ \ \ \ \ \ �i \ \ \ \ \ \ \ \ \ o \ \ \ �� \ \ \ \ \ \ \ \ \ \ \ i loe N, -SIFENCE A ' OUTLET \ C-506 \\ \\ \\ \ \ \ ` ` \ \ \\ \\ \\ \\ 0 SF\AM , / / / / / \ \ \ \ .,,{ \ \ \ \ v� 50 �T EA/VI\ / / / / / / / / / / / / l / / \ \ \ \ \ \ \ \ BUFFS\ \ \ \ \ / / / / / / / / ( / \ \\ \ \ \ \ >xilTEulI�rEN� \ \ \ \ /SILT ENCI1 I I I / l �.- \ \ \\ \ \ \ \ \ \ \ \ \ \ \ olip LO LOD �� LO \ \ / 505 / I � OD�-�� \ \ \ \ \ I I I LOD TP SF TP� �_— p \ \ I I 1 \ I I / / / SF \ \ SF \ 1\ \ 1 1 1 \ I I I I / / AREED -sFo I I Io IsF \ \ \ SILT.�ENCE A / �� // / / / PROyECTION C-505 I I I / i \ \ \ SF TLET C-5 /� �' // / // / / 1 ' o I� /' \\ \\ \ �� TP ° 9 / / / / / / `- I / \ \ \ Lop I I I I I 1 \ 1 `III / I\\ \\ \ \ \ \ \ \ I t I 1 / I IL ENCS I 1 UT3 BUFFER IMPACT 0/ ' T 1 I /' \ \ \ I�" I / I I C-) 1 I I B-10 (ZONE 2 -TEMPORARY) 2,050 SF / \ 1 I I I III I // DI kEE / PIiOTE TIO / L011 SF SILT FENCE 1 I I I / / / / / O \ C 50 OUTLET \\ rP tol / I SIF /SEE 03 I �V / / /' / / / / /' \ \ \ \ \ \ / / O I \ / ' Al st /' // / / // / / / / / / / // / // / C��o00 // // / // / / // // -' _/ \ LOD \\ \ \ \ \ 1 I �o I / / I \ / C{�06/OUTLFET ILT FEN ' // // // / // // / / // // // / // / // P0P�4 / // //'' '/' "' \ �� Lop / l000l/ / / / / / / / / / / / / / / / / /' / / /' / / / ,3tio \ \ \ \ �� Lop \ I 1 \ ' I I I // p / / 6�/ / / / / II.'/ /� O 0¢ I / I I I S�o / / / / / / Lop I ' l I ' ' I I , / / / 1 U I / /LL // /' / /' /' / \ \ \ \\ I I �� ZO 1 j j / // � � ' / / // �/ m // / \ \ \ \ 1 1 I I � I I I \ / / R 0 °E � / / / / / / / \ ., o \ \ \ I I 1 / � I ' �o / � 11) 9s \\ S1\LT FE CE I A ' I / / / / // ///// / /' ' ' / SFO 1 \ I / I I / i I ' - ' // W \O TLET C-506 I I / / lP / / l l / / / / / / / // , / LAYDOWN A I W 1 1 I / / s / / / / / / / / / / / / / / � `Q 1 SILT F NCE I \ 1 1 1 10 / / / / / / / / / // // // / / J \ 1 I C-506 OUTL T // / // / / �/ / / / 1 i / / / �/ W INEOFI / TREES�BRUSI� \ \ \ I 1 1 1 I I I ASF I // // 6/ // , \ \ C SIL FENC / / / / / / IN.SWELL \ \ \\ \ I I 1 1 I I 1 Q I ' I / / / // / , / / / / / Y" LO p/- / \ \ C 5 5 / / / / / / / �� / / I / ,/ 00 / / /' / \ T 1 I 10, \ 1 / 3 // / / U \ \ \ /-,/LOD o \ 1 I I TPE:I I / / / / / SEE N6 /,�o`'� // / \ \\ I I I / // // // / // �v / // /— LOD \�. O \ \ \ C 05 P OTEC ION I I I l l ' / / // /' // p0 / /' /' ,' / a \ \ CNTRICTOR O R/ IV. I I I I I I / / / / / / / / / Lop \ \ \ \ I I I I 1 / I / MPOR A / / / // / / / // / 2 � S'ITFEkE 1 I I o' I I I I I l l / I / / / // / // / / �'J- Lop 1 I / I /r / I / / S R c- 7/ \\ C 05 v I I I / / / / / / O / / / / r- // CROSSING / / / / / / LOD \ SILT FENCE / / / / / / / / / / / / O / // / / � \ \ \ \ \ \\ \ \ 1 1 I / / / / / ' / b / / / / / / / / —'LOD \ \ I C-5 6 UTLE / / / / / / / \\\�RfE\ \ D \ / \ I 1 1 1 I / / / / / / / / / / / 1 ®i '/ '' — LOD \\ \ \\ I I I I / / /' TEC CSN C 5 \ 1 1 1 I I / / / / / / / / / L / / OST / / / / i- / / / i LOD \ \ \ I I I I I I / I / / / I' l / / / \ \ \ / / / / � / / / / / / Lo \ \ I I I I I / /tar \ \ \ \ I / �, /P / / / / \ \ \ \ I I 1 / / / / ti / MOUNTED / / / / p oo I I \ \ SILT �E CLQ \ SWITCH / UT3 STREAM IMPACT \ \ ��° \ .� s�o1 1 / / / / / / / / / / / O _ _ _ \ S \ SFO \ \ \ \ \ I 1 S-4 (TEMPORARY) 50 LF / / zoo 'o" / I T DRAIN' / // / / _Z9S� \ \ \ VA / 5 / \ / / � \ \ \ \ \ \ \\ \ I / / / / l l l // / / / / � V.=315.4 / / / / X32 / / \` o\\ \\ \ \\ \\ \ \ \\ / Ile/ l % // // / / o'�' / \ \ \ \ \ \ \ \ I I I I I / / / / / VENT P/E / / V9VT TU / / / P a O \ \ \ \ \ / / / O \\ \ Fd I / / / / / l // / / / ELEV.1315.3 / / / REV=313.3' / �' / ❑ O \ \ \ \\ \ \ \ \ I / /' / / / //' CO 'Q�1 I 1 I l / /oa\ \ \ \ \ \ \ \ \ UT3 BUFFER IMPACT \ \\ \ `--I \ 1 s / / / / / / / / / / do / / / a a \ \ \ \ \ \ /' `�\ \ \ 1 I / / / / / / / \ B-9 (ZONE 1 -TEMPORARY) 3,075 SF / / I / / / / / �, \ \ \ \ / Ile / ILgD Ill l l / / / / / / \ \ \ \ \ \ \ \ \ \ / / � / ° / / / O —� \ \ \ \ \ \ \ I �/ / / / / / / �--315— S T K N C E J I I I / / // / / / / / / / / / p / / MATCH: x'17.5+ / / / / O \ \ \ \ \ \ \ I I 1 / // /FFE.284.75+ / / �, \ \ \ \ \ \ \ \ \ \ \ I / 8-32s- C sIL FIE dr \ \ \ \\ \ \ \ \ \ \\ \\� \\\\ \ `//// j/ ` // // _�— / / / / // VE O C-�/' / TR`E // // -' 300 \ \ \ �Olcr �5 / / / / / / / / / / / / / / o / / / / / / �' \ ` \ \ \ \ \ \' \ \ \ \ \ \ \ \ \ = = = — —' / / ' '� / \ \ \ \\ —_---/X320 / GRAVEL BED TEl El 1 I I l / / / l I \ \ \ \ \ \ \ \ \ \ N, / /� �,----305--- �� \tel � I I I c% I I l l l / l l / / \ \ \ \ \ \ \ _ / /' I I l � j I / / l / o / i / / i /l IN STORAGE BUILDING 106 0 \\ \\ \ \\ \ `� \ \\`\ \\\ /' ' GRAPHIC SCALE I kob -0/ I I / I / �/ / // I \\ \\ \\ \\ \\ \ \ \ \\\\ \� --�/ / /-- 20 10 0 20 40 N'SCALE: I"=20' -O" UNIT OF MEASURE: FEET CUSTOMER PRJ/DWG #: — 1. —\. \� -, — / / — MATCHLINE - SEE C-501 FOR CONTINUATION ESG PROPRIETARY JN yED ST'A)z' Z LU 2 � O� 414L PROI�G�` rff 11 RMF ENGINEERING, INC. 8081 Arco Corporate Drive, Suite 300 Raleigh, NC 27617 NC License No. C-1125 U W z � � >Q M `: O ~ = w O F-- 01� UL7w -- z N O O�� w ~ U m z Q 0 � 0 o C �Q - a Q w ~ I 00w �v= m z o O mow= O C O C O U ui I o w01= a oM 0- o 0 0 0 o a s p p ■ � a� a� I� I� U W z � � >Q M `: O ~ = w O F-- 01� UL7w -- z N O O�� w ~ U m z Q wawV LU LU o C �Q � a Q w ~ I 00w �v= m z o O mow= O C O C O U ui I o w01= a oM 0- o 0 0 0 o a s m O - G Z __j U m T m C/) 0 LU -0 -0 a N C E ami c 3 W ami N � M m a o' m D U �Q N w wz C O O O Q U o o' U W z � � >Q w Q w QZ O ~ = w O F-- 01� UL7w -- z wz G' O O�� w ~ U m z Q wawV LU LU o C �Q F-- QwO oz w ~ I 00w �v= m z o O mow= O C O C O U ui I �'•3 w01= a oM 2 00 0 0 0 o a s m - G __j U m T m C/) LU -0 -0 a J N E ami c 3 W ami � M Y o' Q �Q wz J J O O Z Q:� Q U o' �O N Qz Q) w V)w a U � U C1 M w d o � D 8`0-1 ` �Ln Ln Ln azoo cg2:rno+ a LnLn o<to%0 N W lL U W z � � w Q w QZ O ~ = w O F-- 01� UL7w -- z wz G' O O�� w ~ U m z Q wawV LU LU �Q F-- QwO oz w ~ a �v= m z O mow= ci O z w Q w w L w01= �. Certified by: Sheet reference number: C-502 m 0 O LO U a a 0 00 00E 1z I C 00 N 0 Q_ V) " A U w 0 0 Q_ Q_ 0 V) DRAWING LEGEND EROSION AND SEDIMENT CONTROL LEGEND SYMBOL DESCRIPTION LOD LIMIT OF DISTURBANCE SF TP SILT FENCE /TREE PROTECTION SF SILT FENCE TP TREE PROTECTION I �J SFO SILT FENCE OUTLET 01 TEMPORARY GRAVEL 12" SD TEMPORARY STORM DRAIN zzz LAYDOWN LAYDOWN / STAGING AREA 2 3 M MATCHLINE - SEE C-504 FOR CONTINUATION \\ `\ `~ \54 DRAWING NOTES: \� \ \ \ \ \ \ \ \ _CPr"\ 1. WHEN TRENCH IS NOT OPEN IN AN AREA, PROVIDE SILT FENCE ACROSS CORRIDOR \ \ \ \ \ \ \ UPSTREAM OF THE DRAINAGE DITCH. TYPICAL FOR ALL AREAS ALONG THE CORRIDOR. N. 2. PROVIDE TEMPORARY MEANS OF CROSSING DRAINAGE DITCH WITHOUT PERMANENTLY _ DAMAGING AREA OR IMPACTING LAND DOWNSTREAM. REFER TO DETAIL A/C -507 FOR \� \ \\� _ \ \ \ \ \ -' CROSSING DETAILS. AFTER CONSTRUCTION IS COMPLETE, REMOVE TEMPORARY STORM LINES AND ROCK AND RESTORE DITCH TO EXISTING CONDITION. FO 3. PROVIDE WALKWAY CLOSED SIGNS AT WALKWAY BRANCH ADJACENT THE LAKE TO THE \ \�\ \ \ \ \ \ L NORTH OF THE PROJECT SITE AND AT THE WALKWAY STARTING POINT IN THE DRIVEWAY TO \ \� �� \\ \ \ \ \ SILT FENCE THE SOUTH OF THE PROJECT SITE WHILE THERE IS ACTIVE CONSTRUCTION IN THE AREA. \ \ \��\� \ — \\ \\ \ OUTLET — �C-506 \ a PROVIDE BARRICADE ACROSS SIDEWALK IN THOSE AREAS.► - 4. CONTRACTOR IS RESPONSIBLE FOR MAINTAINING PERIMETER SECURITY THROUGH THE CLEARED CORRIDOR AT ALL TIMES. WHEN BOULDERS ARE RELOCATED DURING ��i AA \ \�. �\ �� CONSTRUCTION, IT IS ACCEPTABLE FOR THE CONTRACTOR TO UTILIZE HEAVY CONSTRUCTION EQUIPMENT TO BLOCK THE OPENING AND MAINTAIN THE PERIMETER / \�� — _ UT1 BUFFER IMPACT \\ \ SECURITY REQUIREMENT. THE MAXIMUM ALLOWABLE CLEAR SPACE IS 42 INCHES. � B-2 (ZONE 2 - TEMPORARY) 1,400 SF CONTRACTOR MAY ADJUST BOULDERS OR UTILIZE SIMILAR VEHICULAR BARRIERS FURTHER �l� I B-2 (ZONE 2 - PERMANENT) 400 SF \ \ \ \ EAST WHEN TRENCHING IS ACTIVE IN THIS AREA. CONTRACTOR SHALL PROVIDE ADDITIONAL\ BOULDERS ALONG THE NORTH SIDE OF THE CORRIDOR WHERE TREE CLEARING TAKES PLACE I J I�\ (PERMANENT IMPACT IS 10 WIDE N.\` _ — -V) \ TO ENSURE THE BOULDER LINE IS EXTENDED INTO THE REMAINING TREE LINE. NEW 1 I / I CORRIDOR TO BE MAINTAINED FOR / I \I ACCESS / SF BOULDERS SHALL BE LOW VERTICAL GRANITE, MINIMUM VOLUME OF .75 CY. EMBED ONE / \ \ I� ) c _ _e /L / ✓ \ i THIRD OF BOULDER INTO GRADE AND COMPACT. PERIMETER SECURITY MEASURES ARE NOT 1 \l` \II \\.� = — ✓ �� \ REQUIRED ALONG THE NORTH CORRIDOR THROUGH THE WOODS AS THAT AREA IS SECURED . • �29p\\ I I \, ` ?�� % \ y O FURTHER NORTH BY THE EPA BUILDING. Z / \\� j�� SILT FENCE \ / hi � OUTLET 5 ZONEX -- \ . \ _ lA-TnrD FLOODPLAIN \ O --300--- IN 50' STREAM _ • • _ _ �' 10-- 30'5TREAM — — — ` ✓ _ 11��_BUFFER IO UT1 BUFFER IMPACT B-1 (ZONE 1 -TEMPORARY) 2,275 SF O B-1 (ZONE 1 - PERMANENT) 600 SF 4'e (PERMANENT IMPACT IS 10' WIDE — — — — — CORRIDOR TO BE MAINTAINED FOR \\ ACCESS) \ 1 ��\ �� \ \\ \ \ \ \\ \\ \\ \\ \\\\ \ \\ \ \ \✓// /•� /// \ 1 i / SEENOTE2 \ / O A TEMPORARY \-_\\ \ \ \ \ i 1- T=\1 / � C-507 CROSSING — / �� 1 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \\ \ \ ,✓ , / ��_�' —- --� \ O p // 30'STREAM z ,%' / / \ I \ \ \ \\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ / / �' \ 1 �� • I �/ I O BUFFER _ O / � � � � 1 �` ♦ � ' � ' UT1 STREAM IMPACT Q / / / \ I \ \ \ \ \ \ / _ — — \ \ - - _ _ a I 1 S-1 (PERMANENT) 10 LF D / / // // _ _ \ \ \ \ \ \ \ \ \\ \\ 1 1 \ \ \ \ \ \ \ \ / , _ _ _ / \ I \ 1 \ \ Tr - - / S-2 (TEMPORARY) 40 LF / — - — \ J — \ \ \ \ \ 1 1 1 \ \ \ \ \ �. / / r / \ \ \ _ / - - O'er _ 50' STREAM z / / / / / r \ 1 1 \ \ \ / \ \ 1 i Y. - � BUFFER \\ / �- O ------ z / / /'---_ \ \ \ \ \ I 1 I I I \ \ \ / 1 � SILT FENCE A l - � Q� — -- \ O I / / / /' , \\ OUTLET C-506 ,' \ \ \ \ \\ I I I , I 1 \\ \\ \ \ \ \\ \ I , / I I / / ► / I - D \ \ \ I I I \ / / �/ / TREE / /_ �►��` —\\ O / // // / 1S / \ \ \ \ \ 1 I I I I I 1 1 \ \ \ \ �\ \ \� / I / / / I / / PROTECTION \ � \ / / // � k/ \�\ \\ \ \ \ \ 1 I I I I I 1 \\ \ \\ \ \\ \ 1 I ' ' / / � l /' °� '� \\ \ zoNEx (V /// / SI LT FENCE C \\ v OO / / A WPPE R- '• \\ 'HA.LCHED---------- Lfi / / \ \ I I I 1 \ \ \ \ I / / / I I C-505 SFO O �� \ FLOOD PLAIN OI / / ' / / / O �— — / / \ \ \ \ \ \ I I I I I 1 \\ \ \\ \\ / I I I / O / � \ \ \` d / / / / / / � C-509 RESTORATION � � — — U 1 I \ \ \ \ \ \ \ I I \ I I 1 I 1 \ \1 \ \ \ \ \ / /' / / I I I --- ---_j p / / /' /' �_-------------- I---\\ Lu / I TREE 1\ \\ \ \\ \\ \ \ \ 1 11 1 \ \ \ \ \ / / / I / // p -505 PROTECTION r---295 / / / Lu / Ile Ileloll /ol z OO loll(D / lo, LU --------_--_--_---_---__-- --_---__-__------------ -O-----_- - _ /-------- -D / SILT FENCE // ,�,/ / / /------------------- U / /// // /INTERITTNT loo, i _DITCH BUFFER IMPACT p// //Q ISTREA UT- / dk �9 / / B-4 (ZONE 2 - TEMPORARY) 1,525 SF °50' TREJM B-4 (ZONE 2 -PERMANENT) 400 SFO //lo, ______ j 1 BUfER3PSTRE4M (PERMANENT IMPACT IS 10' WIDE / � B R1 B/RDHOUS CORRIDOR TO BE MAINTAINED FOR B CORRIDOR/ _-- - -- \-- -\ — _ ACCESS) ITCH300' —/ 7 RESTORATION-- -----------_ UT2 BUFFER IMPACT l /II </ / B-8 (ZONE 2 -TEMPORARY) 1,490 SF /' D0 / T E /3/p5/ —------ -------- B-8 (ZONE 2 - PERMANENT) 200 SF 5 %ECT / 001 1.4 // (PERMANENT IMPACT IS 10' WIDE / IN, CORRIDOR TO BE MAINTAINED FOR / / / REE ACCESS CUT INTO WOODS ON EASTERN /30'STREA — ` ✓ j / // /' ` /' / ' -505/ PR% ECTIO / / BANK. WESTERN BANK IS WITHIN / I I I 1 I BUFFER ✓i�'`:'} / / / / , _ �Oo / \ /\ \ \ \ ' I I / l / / / EXISTING CORRIDOR / 1 I I �--�" ' ' �/ op /' ' / / i \ J \ \ \ \ \ \ \ 1 I HILT FENCE ) / / // 1 I SI FE�J E 50 STREAM / / �5 / / / / /' / NEW UTILITY CORRIDOR 4 \ \ \ \ \ \ \ \ \ \ 05 / / 1 1 I O E C 6 BUFFER / �j/ / / / THROUGH WOODS: —' Ile 0 -eI 1 OI\` \ \ I LOD 40' TEMPORARY CLEARED 4°o / I I \ \ I \ \ \ \ \ .r \ \ \ 1 / / / SFSIC)a\ \ \ \ O 5 c / .Q // / CORRIDOR DURING // A SILT NCE 510 � ' \ �`\ \\ \ SFO / /' // // CONSTRUCTION \ / I ` / / ► 1 1 1 \ `p \ \ \ \ / , \ / 6 / \ F ` SFO_ _ r / / 10 PERMANENT MAINTENAINCE— I l°/ / I 1 1 i I \ \ �� T \ \ \ \ \ �� /'� /' \ \ R�\� // // /' //' // `mop / ' // // �� CORRIDOR DIRECTLY OVER0 / / UTILITY �jploll \ / �o / / �sFo/ L°i°SF � - 1 � II /�o •/ / / I' // // /' /// �°� ��'' ��- �/ \ I I �Oo / 1 I I I 1 1 \ 1 1 �' / / \\ \ I I I I I �o ' /� ' ' /' // // G \ I I I I / � \ � / / / 11 1 I I 1 1 \ \ 1 I I I \ / / BU FER I o \ / / \ ,d I I I I SEE NOS / 1 I \ / 509 STORATyoN � ;1nnowo / ' / / /' / /' / /' /' / /' // � /' I0, LO°/ �� LOBI 1 I I I I I I I / / / - - / / / / \\ \\ \\ \�o \ o \\ \\ _ / / / / A TMP GARY / / / / /' / /' / / / / / / / \ I / LOD I I _ / / \ \ C -5(y7 S E�M / / / / L9D I I I / I— 5 / /1 \ O \ \ \ \ "oo I / / C SSING / / / / /' / / // , .30 �o S- E VOIE 1 II I I I I f1 / ///// /✓ ✓_----X�� \ \Q \ \\\ \\\ \ \ \ I I II I I SE NOTEI / / / "1/ ' // /' I ✓D I / / / / AI TLI�� / / / / // / T PO RY A ------ TREE i I` I / / / / /h I'll, / TREA iTECTION / "I 315 /CROS NG /// / /// /DITCH BUFFER IMPACT / / / / loo, ENQTEB- / / / // ,// / SVOTER I B-3 (ZONE 1 - PERMANENT) 600 SF / / /loll / - - \ I 1 I I I 1 I 1I 1 I II 1 /fI 1 II (PERMANENT IMPACT IS 10 WIDE // / / / / / , RIP CORRIDOR TO BE MAINTAINED FOR loo, z \RAP / / / /zp ACCESS) , , O /' /' i I I I I / / / / / / / ° / \ \ \ 0 1 \ / / / /' /' / / / / / / ~ \ I 1 I I I ( \ '0" duT / / / / // // / i \ I I j 1 I I l l I\ \\ \ �� \. \ \ / ,/ I I / / // / / \ \\ I 1 1 / �d i ` \ / // // / SPE N � 2 // // // "Iloo,/// /I/ // /, /// /// D I I I I \ \ \ i / / I / / / \ I \ / / ' ' A TEM ORA ' / /' / / z z I I I 1 \ \UT2 STREAM IMPACT / / / / / / / / / / / / / / / / / / / / I s \ / / / / o`' / / / / / / / / S-3 (TEMPORARY) 50 LF / / 1 / / / / I / / / I 1 �° �, / C-5 STR AM / / / // , / / / / z \ 1 I I I I / // // / 1 O / / I / to / f 1 \ ° \ I /' / / /' // ' /' //' z . 1 / l I l I � I I Iso Lo / / / � �ossl I,y� / / � /' /'' / / / / / ' / / / / SILT FENCE A ' / ' ' / / /' / / /' O I I I I I I I I �' / I f � / I 1 1 I l l I I \ ♦ C SILT F NCE /Ja U I I I I I I I I // I 1 / f I 1 1 / 1/ l l I/ 1 OUT ET c 506 \ I d l l / / U 0C I I I I I f I I I UT2 BUFFER IMPACT 1 1 1 / / loll / 3 0 OC 1 I I 1 350 SF 1 I I / /SIL FE E / / / / I I 1 1 I / / / / /' // /' �' �' '' /' /'' /' / 2 O / 1 I 1 I I B-7 (ZONE 1 -TEMPORARY) 2, I / / / / / C-505 o I I I 1 O \ I /! / / / / / / /' /' /' /' / // LL O / I I I I B-7 (ZONE 1 -PERMANENT) 300 SF I / / / /, LAPD N \ I I / / / / / / / / I 1 I PERMANENT IMPACT IS 10' WIDE 1 I / / / / S / / / /' / , / / 0 ' � ' � ' 1 I I 1 CORRIDOR TO BE MAINTAINED FOR \ / I / / / / \ `° \��°D � ' ' ' /' // oU �oP ROCK' / / ' /Ile ' / � � ACCESS CUT INTO WOODS ON \ \ I I I / I I / \ \ sPp / / / O U \ \ 1 I I I SE.Nol1E3 EASTERN BANK. WESTERN BANK IS \ \ I / I I I / \ \ / / s/ / // �/ // // // // U i_u/ \\ 1 1 I 1 1 / � 1 1 I I � LU I 1 / WITHIN EXISTING CORRIDOR) 1 I I / / �/ / / 1 \ I / / o / / /s Loe- / / / / / / LU cn \\ I I I I 1 I I I I // / I I/ / \ 1 1 / 1 \ \ I I III / / / / o, / rF / \ \ \ I I L L Q .,� o sF / / / /� �ti / / / / / o loo, / / cn Lu I 1 I I I I 1 / I 1 1 1 1\ 1 1 1 I I III III/ / // / / 3ti / / D \ \ \ 1 I I I I / / / / / / / /' // � / LU o 1 I I I 1 1 \ I 1 I // / \ 1\ I I I // z / 1 1 1 1 1 1 1 1 I / I 11 / I / / / , sF 9° SF LOD s� /' / / /' z O 1 I I I I I I I I 1 I 1 I 1 // 111 / / / / / /°D a \ \ \ \ \ I I \ / / / / cob LOD / /lo I 1 I 1 I I I / 1 1 1 / / / o \ \ / / / / / / o I I I 1 / / / / / 1 1 I I / sF / / / / ILo LOD U I 1 1 / I I 1 / -- _ I I 1 1 1 1 I '//// / ' / / / / / / MoD sF I \ \ \ \ � I � / l / / / / / / / � sF o I / \ 1 I 1 I I I I I // / / / / / / / / �` sF s�F/ Lod S p / / U O I 1 1 I I \ / / \ 1 I 1 \ / / /// / 1 \ \ I LT F ACE / / / / LOD / / t - Q 1 \ 1 I I 1 / \ \ 1 I I I I 1 I \ I I /// / / / / / / / / / t D I I srEpM\ \ \ \ 1 I I cos / / / / ' Lo F L / Q \ \ I 1 1 1 I I 1 1 \ I I/ / / / sF I 1 EXH US / ES \ \ I I I f / / / ° sF ,/ / / SF /LO - O 1 1 I I I / I 1 1 I \ \ \ I I // / / / 1 1 / / / -315-- a I \ \ I / / / / / / / L° / / / g \ 1 / /�'EE VOTE x I / D � / F LOD O I I / 1 I 1 \ \ / / / / / 1 ° 1 1 1 \ \ 1 / / / / / / / / / � LOD I I I I / / / / I / v I\ 1 I \ 11 I I I / A / / SF/ \ I / SILT FtNc / // LODE / WITNESS I 1 1 I I /q / C -5o OU L T/ LOD I 1 1 I I I I RIP / / 7� LOD SF / / / / P I 1 1 / / I/ / ' / /' /' /' ' / / �� OD DITCH BUFFER IMPACT 1 1 I I I / / / / / / / /r / / ' ' L// � SF_� / SF 325 oO B-5 ZONE 1 - TEMPORARY 2,170 SF I 1 I / / / / / / / / // / / / / / // / OD LOD s ( ) 1 1 I II//// / / / / / / / 'o' / �,�C O // SF / / � LOD �O / / DITCH BUFFER IMPACT I \ \ \ \ \ / / / ' / / / / / / / / loo, ' / O I \ / � / / / / / / / / / B-6 (ZONE 2 - TEMPORARY) 1,295 SF I \ \ \� / / / / / I / / / / / / GRAPHIC SCALE 1 I 1 1 J 1 \./l \\ -_ `/ // / / l l '/ I l � l i // /' /' i / , / / / 20 10 0 20 40 N'SCALE: I"=20' -O" UNIT OF MEASURE: FEET CUSTOMER PRJ/DWG #: ESG PROPRIETARY JN yED ST'A)z' Z LU 2 � O� '�i�2TgC PRO1'(-G�` rff I RMF ENGINEERING, INC. 8081 Arco Corporate Drive, Suite 300 Raleigh, NC 27617 NC License No. C-1125 U W z � � M O 0 ~ w o W z N o O —D W rn O � O 6 C �Q •- a Q z w ~� I 00 w z o o •; CD cc' o 'F_.j a ui I 0 w ai o M2 0 0 0 0 0 o O� � �m G� G� Oa 0 U W z � � M `: 0 ~ w o U (n W z N o O —D W rn 0-1 0~Cn a-awC LU 6 C �Q � a Q z w ~� I 00 w z o o mow= CD C o 01 C — O U ui I 0 w ai o M2 0 0 0 0 0 o a s �m 0 G Z n J U co n N Tm a (n 0 LU -0 -0 0 in C ami c 3 W ami N 4 0 V) L m D U �Q N N wz C 0 U 0 g � U a o U W z � � w Q w Qz 0 ~ w o U (n W z Ld o O —D W rn 0-1 0~Cn a-awC LU 6 C �Q Qw� oz z w ~� I 00 w z o o mow= CD C o 01 C — O U ui I �'•3 w ai o M2 0 0 0 0 0 o a s �m G n J U co n N Tm a (n LU -0 -0 0 ami c 3 W ami � 0 0 V) Q �Q wz J J 0 U z� g � U �o Qz w V) w a U � U C1 M W a00 a U� 0 00Noo LnLn azoo LU Ln Ln o<to%0 N W �E li U W z � � w Q w Qz 0 ~ w o U (n W z Ld o O —D W U U zQ 0-1 0~Cn a-awC LU �Q Qw� oz z w ~� �a �v= m z E o mow= Ci o zwQ o w w� w Certified by: Sheet reference number: C-503 rn 0 0 LO U a 0 0 00 00 ui E C 1z .r. C 00 0 0 V) M U U w 00 Q_ U) MULCHING K6]a1�112%[aI[Wa�yaIto19N031to] atal Select a material based on site and practice requirements, availability of material, and availability of labor and equipment. Table 6.14a lists commonly used mulches and some alternatives. Before mulching, complete the required grading, install sediment control practices, and prepare the seedbed. Apply seed before mulching except in the following cases: - Seed is applied as part of a hydroseeder slurry containing wood fiber mulch. - A hydroseeder slurry is applied over straw. Application of Organic Mulch: Organic mulches are effective where they can be tacked securely to the surface. Materials and specifications are given in Table 6.14a. Spread mulch uniformly, by hand or with a mulch blower. When spreading straw mulch by hand, divide the area to be mulched into sections of approximately 1,000 square feet and place 90 pounds of straw (2 BALES) in each section to facilitate uniform distribution. After spreading mulch, no more than 25% of the ground surface should be visible. In hydroseeding operations a green dye, added to the slurry, assures a uniform application. Anchoring Organic Mulch: Straw mulch must be anchored immediately after spreading. The following methods of anchoring mulch may be used: Mulch anchoring tool --A tractor -drawn implement designed to punch mulch into the soil, a mulch anchoring tool provides maximum erosion control with straw. A regular farm disk, weighted and set nearly straight, may substitute, but will not do a job comparable to the mulch anchoring tool. The disk should not be sharp enough to cut the straw. These methods are limited to slopes no steeper that 3:1, where equipment can operate safely. Operate machinery on the contour. Liquid mulch binders --Application of liquid mulch binders and tackifiers should be heaviest at the edges of areas and at crests of ridges and banks, to resist wind. Binder should be applied uniformly to the rest of the area. Binders may be applied after mulch is spread or may be sprayed into the mulch as it is being blown onto the soil. Applying straw and binder together is the most effective method. Liquid binders include asphalt and an array of commercially available synthetic binders. Emulsified asphalt is the most commonly used mulch binder. Any type thin enough to be blown from spray equipment is satisfactory. Asphalt is classified according to the time it takes to cure. Rapid setting (RS or CRS designation) is formulated for curing in less than 24 hours, even during periods of high humidity; it is best used in spring and fall. Medium setting (MS or CMS) is formulated for curing within 24 to 48 hours, and slow setting (SS or CSS) is formulated for use during hot, dry weather, requiring 48 hours or more curing time. Apply asphalt at 0.10 gallon per square yard (10 gal/1000sq. ft.). Heavier applications cause straw to "perch" over rills. In traffic areas uncured asphalt can be picked up on shoes and cause damage to rugs, clothing etc. Use types RS or CRS to minimize such problems. Synthetic binders such as Petroset, Terratack, and Aerospray may be used, as recommended by the manufacturer, to anchor mulch. These are expensive and therefore usually used in small areas or in residential areas where asphalt may be a problem (Use of trade names does not constitute an endorsement). Mulch nettings --Lightweight plastic, cotton, jute, wire, or paper nets may be stapled over the mulch according to the manufacturer's recommendations. Peg and twine --Because it is labor-intensive, this method is feasible only in small areas where other methods cannot be used. Drive 8-10 inch wooden pegs to within 3 inches of the soil surface, every 4 ft in all directions. Stakes may be driven before or after straw is spread. Secure mulch by stretching twine two or more times around each peg. Twine may be tightened over the much by driving pegs further into the ground. Vegetation --Rye (grain) may be used to anchor mulch in fall plantings, and German millet in spring. Broadcast at 15lb/acre before applying mulch. MAINTENANCE: Inspect all mulches periodically, and after rainstorms to check for rill erosion, dislocation, or failure. Where erosion is observed, apply additional mulch. If washout occurs, repair the slope grade, reseed, and reinstall mulch. Continue inspections until vegetation is firmly established. TABLE 6.14a Material Rate Per Acre Quality Notes Organic Mulches 20 LBS/ACRE 3. Install construction fences for contractor staging AND Straw 90 lbs Dry, unchopped, un- Should come from wheat or oats; 4. Call NCDENR for an on-site inspection by an AND weathered; avoid weeds. spread by hand or machine; must ADD OATS 60 LBS/ACRE JUNE 1 -SEPTEMBER 1 be tacked down. Wood Chips 5-6 tons Air dry Treat with 12 lbs nitrogen/ton. Apply SEPTEMBER 1 - OCTOBER 15 CREEPING RED FESCUE 20 LBS/ACRE with mulch blower, chip handler, or AND LB OF P.L.S. 76% ORGANIC FERTILIZER by hand. Not for use in fine turf. Wood Fiber 0.5-1 tons AND Also referred to as wood cellulose. DICANTHELIUM CLANDESTINIUM DEER TONGUE ADD WHEAT 60 LBS/ACRE May be hydroseeded. Do not use CREEPING RED FESCUE 20 LBS/ACRE NONE (EXCEPT FOR PERIMETERS AND in hot, dry weather. Bark 35 cubic yards Air dry, shredded or Apply with mulch blower, chip 0 AND hammer -milled, or chips. handler, or by hand. Do not ADD RYE 60 LBS/ACRE DECEMBER 15 - MARCH 1 use asphalt tack. Corn Stalks 4-6 tons Cut or shredded in Apply with mulch blower or by ELYMUS VIRGINICUS VIRGINIA WILD RYE LB OF P.L.S. 76% 4-6 in. lengths. hand. Not for use in fine turf. Nets and Mats 10 26 Jute net Cover area Heavy, uniform; woven of Withstands waterflow. Best when T J single jute yarn. used with organic mulch. Fiberglass Cover area 0 Withstands waterflow. Best when net n 5 used with organic mulch. Excelsior Cover area U7C Withstands waterflow. (wood fiber) 5 13 mat LB OF P.L.S. 76% N_ 0 Fiberglass 0.5-1 tons Continuous fibers of drawn Apply with compressed air roving LB OF P.L.S. 76% glass bound together with ejector. Tack with emulsified a non-toxic agent. asphalt at a rate of 25-35 SENNA HEBECARPA WILD SENNA LB OF P.L.S. 76% M DU gal/1000 sq ft. Chemical Stabilizers 5 13 Aquatain follow N Not beneficial to plant growth. Aerospray manufacturer's 100 520 Curasol AK specifications J J Petroset SB 1. APPLY SOIL AMENDMENTS EVENLY AND INCORPORATE TO A DEPTH OF 4-6". LOOSEN SURFACE JUST BEFORE BROADCASTING. 2. MULCH MUST COVER 75% OF THE GROUND SURFACE. Terra Tack 0 Crust 500 Qa Genaqua 743 � U M-145 SEEDING CONSTRUCTION SPECIFICATIONS: Seedbed Preparation: Install necessary mechanical erosion and sedimentation control practices before seeding, and complete grading according to the approved plan. Lime and fertilizer needs should be determined by soil tests. Soil testing is performed free of charge by the North Carolina Department of Agriculture soil testing laboratory. Directions, sample cartons, and information sheets are available through county Agricultural Extension offices or from NCDA. Because the NCDA soil testing lab requires 1-6 weeks for sample turnaround, sampling must be planned well in advance of final grading. Testing is also done by commercial laboratories. When soil tests are not available, follow rates suggested on the individual specification sheet for the seeding mix chosen. Application rates usually fall into the following ranges: - Ground agricultural limestone: - Light -textured, sandy soils: 1-1 1/2 tons/acre - Heavy -textured, clayey soils: 2-3 tons/acre - Fertilizer: - Grasses: 800-1200 Ib/acre of 10-10-10 (or the equivalent) Apply lime and fertilizer evenly and incorporate into the top 4-6 inches of soil by disking or other suitable means. Operate machinery on the contour. When using a hydroseeder, apply lime and fertilizer to a rough, loose surface. Roughen surfaces according to Surface Roughening. Complete seedbed preparation by breaking up large clods and raking into a smooth, uniform surface (slopes less than 3:1). Fill in or level depressions that can collect water. Broadcast seed into a freshly loosened seedbed that has not been sealed by rainfall. 0311111]11[03 Seeding dates given in the seeding mixture specifications are designated as best or possible. Seedings properly carried out within the best dates have a high probability of success. It is also possible to have satisfactory establishment when seeding outside these dates. However, as you deviate from them, the probability of failure increases rapidly. Seeding on the last date shown under possible may reduce chances of success by 30-50%. Always take this into account in scheduling land -disturbing activities. Use certified seed for permanent seeding whenever possible. Certified seed is inspected by the North Carolina Crop Improvement Association. It meets published North Carolina Standards and should bear an official Certified Seed label. CUSTOMER PRJ/DWG #: 2 3 SEEDING (CONT.) Labeling of non -certified seed is also required by law. Labels contain important information on seed purity, Inoculate legume seed with the Rhizobium bacteria appropriate to the species of legume. Apply seed uniformly with a cyclone seeder, drop -type spreader, drill, cultipacker seeder, or hydroseeder on a firm, friable seedbed. When using broadcast -seeding methods, subdivide the area into workable sections and determine the amount of seed needed for each section. Apply one-half the seed while moving back and forth across the area, making a uniform pattern; then apply the second half in the same way, but moving at right angles to the first pass. Cover broadcast seed by raking or chain dragging; then firm the surface with a roller or cultipacker to provide good seed contact. Mulch all plantings immediately after seeding. Irrigation: Moisture is essential for seed germination and seedling establishment. Supplemental irrigation can be very helpful in assuring adequate stands in dry seasons or to speed development of full cover. It is a requirement for fine turf establishment and should be used elsewhere when feasible. However, irrigation is rarely critical for low -maintenance vegetation planted at the appropriate time of the year. Water application rates must be carefully controlled to prevent runoff. Inadequate or excessive amounts of water can be more harmful than no supplemental water. MAINTENANCE: Generally, a stand of vegetation cannot be determined to be fully established until soil cover has been maintained for one full year from planting. Inspect seeded areas for failure and make necessary repairs and reseedings within the some season, if possible. Reseeding --If a stand has inadequate cover, reevaluate choice of plant materials and quantities of lime and 9 q � P fertilizer. Reestablish the stand after seedbed preparation or over -seed the stand. Consider seeding temporary, annual species if the time of year is not appropriate for permanent seeding. If vegetation fails to grow, soil must be tested to determine if acidity or nutrient imbalance is responsible. TABLE 1.1 SEEDING EROSION CONTROL SCHEDULE SLOPES (3:1 TO 2:1) DATE TYPE PLANTING RATE MARCH 1 JUNE 1 CREEPING RED FESCUE 20 LBS/ACRE 3. Install construction fences for contractor staging AND area and for temporary soil stock pile area. ADD RED CLOVER 10 LBS/ACRE 4. Call NCDENR for an on-site inspection by an AND compliance, as required by NCDENR. LBS/AC ADD OATS 60 LBS/ACRE JUNE 1 -SEPTEMBER 1 ***BROWNTOP MILLET 25 LBS/ACRE area. Dispose of ***OR GERMAN FOXTAIL 25 LBS/ACRE SEPTEMBER 1 - OCTOBER 15 CREEPING RED FESCUE 20 LBS/ACRE 52 AND LB OF P.L.S. 76% ORGANIC FERTILIZER ADD RED CLOVER 10 LBS/ACRE SPECIES AND 52 DICANTHELIUM CLANDESTINIUM DEER TONGUE ADD WHEAT 60 LBS/ACRE OCTOBER 15 - DECEMBER 15 CREEPING RED FESCUE 20 LBS/ACRE NONE (EXCEPT FOR PERIMETERS AND AND 14 DAYS HQW ZONES) ADD ANNUAL RYEGRASS 10 LBS/ACRE 0 AND 10 26 ADD RYE 60 LBS/ACRE DECEMBER 15 - MARCH 1 ***ANNUAL RYEGRASS 20 LBS/ACRE CONSULT AN EROSION CONTROL ENGINEER OR SOIL CONSERVATION SERVICE FOR ADDITIONAL INFORMATION CONCERNING OTHER ALTERNATIVES FOR VEGETATION OF DENUDED AREAS. THE ABOVE VEGETATION RATES ARE THOSE WHICH DO WELL UNDER LOCAL CONDITIONS; OTHER SEEDING RATE COMBINATIONS ARE POSSIBLE ***TEMPORARY - RESEED ACCORDING TO OPTIMUM SEASON FOR DESIRED PERMANENT VEGETATION. DO NOT ALLOW TEMPORARY COVER TO GROW OVER 12 INCHES IN HEIGHT BEFORE MOWING, OTHERWISE FESCUE MAY BE SHADED OUT. TABLE 1.2 SEEDING EROSION CONTROL SCHEDULE (MAXIMUM SLOPE 3:1) DATE TYPE PLANTING RATE MARCH 1 JUNE 1 CREEPING RED FESCUE 20 LBS/ACRE 3. Install construction fences for contractor staging AND area and for temporary soil stock pile area. ADD RED CLOVER 10 LBS/ACRE 4. Call NCDENR for an on-site inspection by an AND compliance, as required by NCDENR. LBS/AC ADD OATS 60 LBS/ACRE JUNE 1 SEPTEMBER 1 ***BROWNTOP MILLET 25 LBS/ACRE area. Dispose of ***OR GERMAN FOXTAIL 25 LBS/ACRE SEPTEMBER 1 - OCTOBER 15 CREEPING RED FESCUE 20 LBS/ACRE 52 AND LB OF P.L.S. 76% ORGANIC FERTILIZER ADD RED CLOVER 10 LBS/ACRE SPECIES AND 52 DICANTHELIUM CLANDESTINIUM DEER TONGUE ADD WHEAT 60 LBS/ACRE OCTOBER 15 - DECEMBER 15 CREEPING RED FESCUE 20 LBS/ACRE NONE (EXCEPT FOR PERIMETERS AND AND 14 DAYS HQW ZONES) ADD ANNUAL RYEGRASS 10 LBS/ACRE 0 AND 10 26 ADD RYE 60 LBS/ACRE DECEMBER 15 - MARCH 1 ***ANNUAL RYEGRASS 20 LBS/ACRE ***TEMPORARY - RESEED ACCORDING TO OPTIMUM SEASON FOR DESIRED PERMANENT VEGETATION. DO NOT ALLOW TEMPORARY COVER TO GROW OVER 12 INCHES IN HEIGHT BEFORE MOWING. Note on maintenance: refertilize if growth is not fully adequate. Reseed, refertilize and mulch immediately following erosion or other damage. TABLE 1.3 SEEDING EROSION CONTROL SCHEDULE SLOPES (3:1 AND 2:1 - NOT MOWED) DATE TYPE PLANTING RATE MARCH 1 JUNE 1 CREEPING RED FESCUE 20 LBS/ACRE 3. Install construction fences for contractor staging AND area and for temporary soil stock pile area. ADD RED CLOVER 10 LBS/ACRE 4. Call NCDENR for an on-site inspection by an AND compliance, as required by NCDENR. LBS/AC ADD OATS 60 LBS/ACRE JUNE 1 -SEPTEMBER 1 ***BROWNTOP MILLET 25 LBS/ACRE area. Dispose of ***OR GERMAN FOXTAIL 25 LBS/ACRE SEPTEMBER 1 - OCTOBER 15 CREEPING RED FESCUE 20 LBS/ACRE 52 AND LB OF P.L.S. 76% ORGANIC FERTILIZER ADD RED CLOVER 10 LBS/ACRE SPECIES AND 52 DICANTHELIUM CLANDESTINIUM DEER TONGUE ADD WHEAT 60 LBS/ACRE OCTOBER 15 - DECEMBER 15 CREEPING RED FESCUE 20 LBS/ACRE NONE (EXCEPT FOR PERIMETERS AND AND 14 DAYS HQW ZONES) ADD ANNUAL RYEGRASS 10 LBS/ACRE 0 AND 10 26 ADD RYE 60 LBS/ACRE DECEMBER 15 - MARCH 1 ***ANNUAL RYEGRASS 20 LBS/ACRE ***TEMPORARY - RESEED ACCORDING TO OPTIMUM SEASON FOR DESIRED PERMANENT VEGETATION. DO NOT ALLOW TEMPORARY COVER TO GROW OVER 12 INCHES IN HEIGHT BEFORE MOWING. Note on maintenance: refertilize if growth is not fully adequate. Reseed, refertilize and mulch immediately following erosion or other damage. SEEDING EROSION CONTROL SCHEDULE DISTURBED AREA Disturbed Area is equal to 5.75 Acres (250ksf). EROSION AND SEDIMENT CONTROL NOTES: The contractor shall comply with the following requirements: 1. Equipment utilized during the construction activity on a site must be operated and maintained in such a manner as to prevent the potential or actual pollution of the surface or ground waters. Fuels, lubricants, coolants, and hydraulic fluids, or any other petroleum products, shall not be discharged on to the ground or into surface waters. Spent fluids shall be disposed of in a manner so as not to enter the waters, surface or ground, and in accordance with applicable state and federal disposal regulations. Any spilled fluids shall be cleaned up to the extent practicable and disposed of in a manner so as not to allow their entry into the waters, surface of the ground, storm sewers, or drains on private or public (State) property. 2. Herbicide, pesticide, and fertilizer usage during the construction activity shall be restricted to those materials approved by EPA and shall be used in accordance with label restrictions. 3. All wastes composed of construction materials shall be disposed of in accordance with North Carolina General Statutes, Chapter 130A, Article 9 - Solid Waste Management, and rules governing the disposal of solid waste (North Carolina Administrative Code Section 15A NCAC 13B). 4. Maintenance and Inspections a. The contractor shall keep all erosion controls devices and materials in good repair. The Owner reserves the right, with 24 hours prior notice to the contractor to repair any erosion control measures or materials as required, and deduct the cost of those repairs from the contractor's application for payment. b. The owner's Environment Health and Safety Center, and other Owner representatives, may periodically evaluate the project for compliance with these requirements. Noted deficiencies will be provided to and discussed with the Owner project representative. 5. The Contractor shall insure that streets connecting to the projects are protected from mud, sand, stone, litter, or debris in any form. All mud collected on vehicle wheels shall be cleaned off before leaving the construction area. Should any mud or debris from the project collect on the streets, it shall be removed immediately to prevent any hazards to vehicular or pedestrian traffic, as well as from entering the storm sewer. The contractor is prohibited from discharging any waste products from concrete trucks or from concrete coring work, or any other unsuitable construction materials or products into the storm sewer system. The contractor shall have the cost of the clean up of any such unauthorized discharge from the project deducted from the contractor's application for payment. All streets adjacent to the project site shall be cleaned of construction related debris, dust, and mud daily. The contractors shall consider in the preparation of bids that the Owner will require cleaning of adjacent streets daily. Should the contractor fail to comply with this requirement, the Owner reserves the right, with 24 hours prior notice to the contractor, to clean the adjacent streets. In such case the cost of the street cleaning shall be deducted from the contractor's application for payment. 6. Provide appropriate measures, such as block and gravel filters or silt fences, during construction as required to protect catch basins, storm drains, and streams from the entry of all silt and construction debris. Contain the residue from the cleaning of ready -mix trucks, wheelbarrows, concrete buddie's, etc. and remove from the Owner's Facility with other refuse. No dumping of debris into drains or catch basin is permitted. Contractor is responsible for cleaning or replacing drain lines if a violation occurs. EROSION AND SEDIMENTATION CONTROL SEQUENCE OF ALL CONSTRUCTION PHASES CONTRACTOR STAGING AND LAYDOWN AREA AND TEMPORARY SOIL STOCKPILE) The Contractor shall notify the North Carolina Department of Environment and Natural Resources (NCDENR) and Environmental Protection Agency (EPA) at least seven (7) days before commencing any land disturbing activities and shall be required to hold a pre -construction meeting between the Project Representatives and a representative from NCDENR and EPA. 2. Install temporary Erosion and Sedimentation Control Measures (silt fencing and inlet protections) and tree protection fencing. Clear only as required to install these devices. 3. Install construction fences for contractor staging and laydown area and for temporary soil stock pile area. SPECIES SPECIES NAME COMMON NAME 4. Call NCDENR for an on-site inspection by an Environmental Engineer to obtain a certification of compliance, as required by NCDENR. LBS/AC RIPARIAN WOODLANDS PERMANENT HERBACEOUS SEED 5. Begin demolition and clearing and grubbing. Maintain devices as needed. Stockpile topsoil and suitable fill material in established stockpile area. Dispose of waste material off-site (Contractor is responsible for all erosion and sedimentation control measures and obtaining permits for the off-site disposal area). 20 52 6. Areas to be left dormant for longer than 14 calendar days shall be temporarily stabilized within seven days. 7. Contractor is to conduct a weekly site inspection and after each rainfall event to determine which devices need maintenance, repair, etc., and to ensure that the erosion control measures are performing adequately. Contractor shall determine during weekly inspections which areas can be permanently and temporarily seeded. 8. Stabilize site as areas are brought to finished grade with vegetation or stone base. All areas indicated to be graveled shall be stabilized with stone as soon as they are brought to final grade. All areas indicated to be paved shall be paved accordingly as shown on the plan. Maintain diversions and inlet protection until site is completely stabilized. 9. Fertilize, seed and mulch all pervious areas according to the seeding schedule. See specifications for additional information. 10. When construction is complete and all pervious areas are stabilized, call NCDENR for an inspection by an Environmental Engineer. 11. On approval from the Environmental Engineer, remove any silt fences, diversion berms, and Inlet protections, and re -grade and seed or stabilize any resulting bare areas. 12. When vegetation has become established, call NCDENR for a final site inspection by an Environmental Inspector. Obtain a Certification of Completion. PERMANENT HERBACEOUS SEED -PLANT IN DISTURBED WETLAND AND RIPARIAN AREAS ONLY 5 PERMITTING REQUIREMENTS: 1. REFER TO THE USACE NATIONWIDE 12 PERMIT AND NCDWQ WQC GENERAL CERTIFICATION NO.4086 FOR REQUIREMENTS WHERE CROSSING THE STREAM AND WETLAND AREAS. GROUND STABILIZATION TABLE GROUND STABILIZATION* FREQUENCY LBSPER STABILIZATION SITE AREA DESCRIPTION ADDITIONAL QUANTITY TOTALAMEND. LBS/AC N SPECIES SPECIES NAME COMMON NAME UNIT AMENDMENT LBS/AC LBS/AC RIPARIAN WOODLANDS PERMANENT HERBACEOUS SEED 40 - RYE 100 260 SECALE CEREALE RYE GRAIN LB OF P.L.S. 76% GROUND LIMESTONE 4,000 26,000 40- OTHER 20 52 PANICUM VIRGATURN SWITCHGRASS LB OF P.L.S. 76% ORGANIC FERTILIZER 320 2,080 SPECIES 20 52 DICANTHELIUM CLANDESTINIUM DEER TONGUE LB OF P.L.S. 76% STRAW MULCH 4,000 26,000 COMBINED NONE (EXCEPT FOR PERIMETERS AND FLATTER THAN 4:1 14 DAYS HQW ZONES) * "EXTENSIONS OF TIME MAY BE APPROVED BY THE PERMITTING AUTHORITY BASED ON WEATHER OR OTHER SITE-SPECIFIC CONDITIONS THAT MAKE COMPLIANCE IMPRACTICABLE" (SECTION 11.B(2)(B)) 0 0 10 26 SORGASTRUM NUTANS INDIAN GRASS LB OF P.L.S. 76% ■ � 10 26 ELYMUS VIRGINICUS VIRGINIA WILD RYE LB OF P.L.S. 76% 0 10 26 TRIDENS FLAVUS PURPLETOP LB OF P.L.S. 76% Z T J 5 13 ANDROPOGON GLOMERATUS BLUESTEM LB OF P.L.S. 76% 0 n LU n 5 13 RUDBECKIA HIRTA BLACK-EYED SUSAN LB OF P.L.S. 76% U7C + 5 13 BAPTISTAAUSTRALIS BLUE FALSE INDIGO LB OF P.L.S. 76% N_ 0 0 5 13 DAUCUS CAROTA QUEEN ANNE'S LACE LB OF P.L.S. 76% Ma 5 13 SENNA HEBECARPA WILD SENNA LB OF P.L.S. 76% M DU - 5 13 PARTHENIUM INTEGRIFOLIUM WILD QUININE LB OF P.L.S. 76% N N 100 520 = TOTAL LBS SEED J J 1. APPLY SOIL AMENDMENTS EVENLY AND INCORPORATE TO A DEPTH OF 4-6". LOOSEN SURFACE JUST BEFORE BROADCASTING. 2. MULCH MUST COVER 75% OF THE GROUND SURFACE. GROUND STABILIZATION TABLE GROUND STABILIZATION* STABILIZATION STABILIZATION SITE AREA DESCRIPTION � m O TIME FRAME TIME FRAME EXCEPTIONS PERIMETER DIKES, SWALES, DITCHES Z O W � 7 DAYS NONE AND SLOPES 2Q O HIGH QUALITY WATER (HOW) ZONE 6 C Ln 0 v 7 DAYS NONE I 00 -2 IF SLOPES ARE 10' OR LESS IN LENGTH o AND ARE NOT STEEPER THAN 2:1, 14 SLOPES STEEPER THAN 3:1 7 DAYS DAYS ARE ALLOWED. SLOPES 3:1 OR FLATTER 14 DAYS 7 DAYS FOR SLOPES GREATER THAN w 50 FEET IN LENGTH ALL OTHER AREAS WITH SLOPES V a NONE (EXCEPT FOR PERIMETERS AND FLATTER THAN 4:1 14 DAYS HQW ZONES) * "EXTENSIONS OF TIME MAY BE APPROVED BY THE PERMITTING AUTHORITY BASED ON WEATHER OR OTHER SITE-SPECIFIC CONDITIONS THAT MAKE COMPLIANCE IMPRACTICABLE" (SECTION 11.B(2)(B)) INSPECTION AND MONITORING REQUIREMENTS: UNLESS OTHERWISE APPROVED IN WRITING BY THE NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES, THE CONTRACTOR INSTALLING ANY EROSION CONTROL DEVICE SHALL COMPLY WITH THE FOLLOWING REQUIREMENTS. 1. ALL SEDIMENTATION AND EROSION CONTROL FACILITIES SHALL BE INSPECTED BY THE CONTRACTOR AT LEAST ONCE EVERY SEVEN CALENDAR DAYS AND WITHIN 24 HOURS AFTER ANY STORM EVENT GREATER THAN 0.5 INCHES OF RAIN PER 24 HOUR PERIOD. 2. STORMWATER RUNOFF DISCHARGES SHALL BE INSPECTED BY VISUAL OBSERVATION FOR COLOR, FOAM, OUTFALL STAINING, VISIBLE SHEENS, DRY WEATHER FLOWS AND MUDDY WATER (AT THE FREQUENCY DESCRIBED ABOVE) TO EVALUATE THE EFFECTIVENESS OF THE POLLUTION CONTROL FACILITIES OR PRACTICES. IF ANY VISIBLE OFF-SITE SEDIMENTATION IS LEAVING THE SITE, CORRECTIVE ACTION SHALL BE TAKEN TO REDUCE THE DISCHARGE OF SEDIMENTS. 3. THE CONTRACTOR SHALL SUBMIT TO THE OWNER A WRITTEN REPORT OF WEEKLY INSPECTIONS. VISIBLE SEDIMENTATION FOUND OFF THE SITE SHALL BE RECORDED WITH A BRIEF EXPLANATION AS TO THE MEASURE TAKEN TO PREVENT FUTURE RELEASES AS WELL AS ANY MEASURES TAKEN TO CLEAN UP THE SEDIMENT THAT HAS LEFT THE SITE. THIS RECORD SHALL BE MADE AVAILABLE TO DEM OR AUTHORIZED AGENT UPON REQUEST. ESG PROPRIETARY JN yED ST,A)Z, z Xw oF01 2� rff 11 RMF ENGINEERING, INC. 8081 Arco Corporate Drive, Suite 300 Raleigh, NC 27617 NC License No. C-1125 Q c� Z � 12 w Q w � m O � F-- 01� UU) W W Z Z O W � N00 � wV) 2Q O � 6 C Ln 0 v a U = m I 00 -2 O o V CD C w C O U :2 3: w V a o M 0 0 0 0 0 o a s ■ � G� c/1 G� c/1 0 Q Z � 12 w Q w m `a ~O w F-- 01� UU) W W Z Z O � _� W 0 :2a- U N00 LLA J wV) 2Q Q Z� Z Lu w 6 C Ln 0 v a U = m I 00 -2 O o V CD C w C O U :2 3: w V a o M 0 0 0 0 0 o a s m 0 Z T J U T co N a m L7 0 n LU n a C -0c U7C + W N_ 0 0 W V) Ma M DU - w N N wZ J J 0 p 0 Qa � U a o Q Z � 12 w Q w QZ 0 ~O w F-- 01� UU) W W Z Z O � _� W 0 :2a- U Q � >- LLA J wV) 2Q Q Z� Z Lu w 6 C Ln 0 v 025 U = m I 00 -2 O o V CD C w C O U :2 3: w V a o M 2 0 0 0 0 0 o a s m T J U T co N a m L7 n LU n a C -0c J + W 0 0 W V) Q w Q wZ J J 0 p Z Q:� Qa � U �o 02 Q Z Q2 ;; w _tf V) w 0- U t 0:� U 0 0 0 CD M LU d oto a! 0 y pN00 ��LnLn az00 t,E0)(A . ,I ,1 LU Ln Ln 0<%0%0 CD X N LU lL U W Z � 12 w Q w QZ 0 ~O w F-- 01� UU) W W Z Z O � _� W 0 :2a- U Q � >- LLA J wV) 2Q Q Z� Z Lu w a LJ O Ln 0 W F- 025 U = m Z Z a 0 E O mow= V O z wQ 0 w w� :2 3: w Certified by: Sheet reference number: C-508 rn 0 0 U a 0 00 00E C 00 N 0 N A w 0 Q_ Q_ 1 I 2 \\ \ \ 17'1°tlbFEE- \ g7"PINE Ole 17 "PINE EXHEADCUT _— \\\\ \---------------- I \\\\ \ \ e \\1" 2 PINE \ �l i \ I \ \moi/ — 7 \�►'MAP I 1 12 "MAP — / 24 MAP - \_� I / MA \= 15'MIP i I I 24 MAP0 12 "DINE 15 "A 12 AP ► 1R"P/Ahc i GRAPHIC SCALE STREAM STABILIZATION - EXISTING CONDITIONS 10 5 0 10 20 SCALE: I"=10' N SCALE: 1"=10'-0" UNIT OF MEASURE: FEET \ \\\ \\ \\\'0 BATTEN AND \ \ � o \\\ PR�ECT EXISTING \ TREEStMEMAIN \ STREAM \ STABILIZATION LOD `LOD "LAD 1T'PINE 00 15 "PIN -- 0 \ \ O �\ r LOD p\\ 000000;_,--- 17'PINE LOD EX EADCUT O — \ ST1+00.00 \ LS- O \ -' LS -1 'ooe -5 / \�b� \ \\� _ / \ 2 I LS-� /I � -4, 7 ATF) FINAL LOG DROP, / \\ TIES REAM BANK BACK TOE ISTING \ \ \ \ 7 \ p0 ST1+15.32 _ �- / " 286.8' - — 1 12 MAP �\ op e 24' P �\ I ST2+00.00 MA _ _ \ �� 11 //4 p 1 ST2+08.73 =� \ �V� BATTEN AND I 291.3' PROTECT EXISTING ° LOD TREES TO REMAIN SOD �O I Lo J LOD LOD LOD �� `00 1 24"MAP D 4 Lo -\\ I D 12" AP / I HTHW LOD - 15 "MAP �p 300 295 290 285 w 280 STREAM STABILIZATION - LOG DROP LAYOUT SCALE: 1"=10' \ \ UT1 BUFFER IMPACT B-11 (ZONE 1 - PERMANENT) 3,600 SF UT1 STREAM IMPACT S-5 (STABILIZATION) 98 LF 1—,,- I-ol- C to 1 v' INE 15 "Pj 18 PINE f { SITE PLAN SCALE 10 5 0 10 20 NSCALE: 1"=10'-0" UNIT OF MEASURE: FEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EX HEADCUT STEP CHANNEL AT 5% .................................MAXIMUM .... ..... ...................................... ST1+00 CUSTOMER PRJ/DWG #: STREAM STABILIZATION - LOG DROP PROFILE HORIZONTAL SCALE: 1"=10'-0" VERTICAL SCALE: 1"=2'-6" ST2+00 HORIZONTAL SCALE 10 5 0 10 20 SCALE: 1"=10'-0" UNIT OF MEASURE: FEET VERTICAL SCALE 2.5 1.25 0 2.5 5 SCALE: 1"=2'-6" UNIT OF MEASURE: FEET 300 295 290 285 280 ST2+50 3 PROVIDE FIVE OR CLASS II Rlf ON DOWNSTR REFER TO SECTION B -B FOR STEAM BED AND STREAM BANK STABILIZATION CUT 3" DEEP BY 12' NOTCH INTO HEAD HEADER LOG 1 IP4 BENCH AS REQUIRED r LS -2 287.80' FOOTER LOG LS -3 288.30' 18' LS -4 288.80' EXTEND LOGS MIN. 3' INTO STREAM BANKS LS -5 289.30' 16' CONTRACTOR SHALL USE STRAIGHT, UNIFORM DIAMETER LOGS THAT AR OF ROT, DISEASE OR INSECT INFEST) LOGS SHALL BE HARDWOODS WITH 12" DIAMETER. REFER TO DETAIL B/, VEGETATED BANK STREAM BED STABILIZATION BENCH AS REQUIRED 2'-0" 12" MIN. OF STREAM BED MATERIAL. REFER TO TABLE FOR STREAM BED MATERIAL MIX.— FUR LUG LEND I HS. SECTION A -A INSTALL (4) #5 REBAR ANCHORS INTO LOGS. LOGS SHALL BE DRIVEN LOG DROP INSTALLATION TO EXTEND 36" MIN. BELOW BOTTOM OF FOOTER LOG. REBAR SHOULD BE SPACED 18" O.C. STREAM BED T-0" STREAM BED VEGETATED BANK BENCH STABILIZATION 2'-0" AS REQUIRED SECTION B -B STREAM BED/BANK STABILIZATION LOG ID TOP OF LOG ELEVATION MIN. LOG WIDTH LS -1 287.30' 18' LS -2 287.80' 18' LS -3 288.30' 18' LS -4 288.80' 16' LS -5 289.30' 16' LS -6 289.80' 14' LS -7 290.30' 14' LS -8 290.80' 14' LS -9 291.30' 14' B LOG STEP POOL SCHEDULE C-509 C-509 SCALE: NONE 4 1 MAX. SLOPE 1 � E FREE kTION. MIN. :509 REFER TO VEGETATED SOIL LIFT STREAM BANK RESTORATION FOR ADDITIONAL DETAIL. STREAM BED MATERIAL MIX PERCENT SIZED SIZE(D50) STONE AGGREGATE (TYP.) 5%-10% CORNUS SERICEA 5/8" STONE AGGREGATE (TYP.) 30%-35% SALIX SERICEA 11/4" STONE AGGREGATE (TYP.) 60%-65% 2 1/2" 1 J -ES: 1. CONTRACTOR SHALL UTILIZE EXISTING HARDWOOD TREES SCHEDULED FOR DEMOLITION FOR THE INSTALLATION OF THE HTHW LOG STEP PROCESS. FLOW OPEN CLASS AGGREGATE - GEOTEXTILE FILTER FABRIC V-0" OF EXPOSED LIVE WHIPS INSTALL LIVE WHIPS BETWEEN SOIL LIFTS SPACED AT 12" O.C. EXTEND WHIPS T-0" MIN. INTO GROUND. ROWS SHOULD BE STAGGERED, NOT VERTICALLY ALIGNED. REFER TO DETAIL C/C509 FOR LIST OF ACCEPTABLE LIVE WHIP SPECIES A STREAM HEADCUT STABILIZATION C-509 C-509 SCALE: NONE COMMON NAME BOTANICAL NAME SILKY DOGWOOD CORNUS AMOMUM RED TWIG DOGWOOD CORNUS SERICEA NINEBARK PHYSOCARPUS OPULIFOLIUS SILKY WILLOW SALIX SERICEA LIVE WHIP SCHEDULE C-509 C-509 SCALE: NONE BASEFLOW SECTION C -C LOG DROP SECTION 5 NOTCHED HEADER LOG FOOTER LOG INSTALL LARGER SPLASH ROCKS (1'-2' WIDTH) ON DOWNSTREAM SIDE OF LOGS. SPLASH ROCKS SHALL BE LEVEL WITH STREAM BED. VEGETATED SOIL LIFT STREAM BANK RESTORATION INSTALL 18" LONG 2"X1" WOODEN STAKES AT 1' O.C.. STAKES SHALL BE NOTCHED OR HAVE A NAIL AT TOP. STAKES SHALL BE INSTALLED BETWEEN EVERY SOIL LIFT LAYER ESG PROPRIETARY JN y f -D ST'A)z' Z � w O � 2 � O� C PROI�G�` rff I RMF ENGINEERING, INC. 8081 Arco Corporate Drive, Suite 300 Raleigh, NC 27617 NC License No. C-1125 BIODEGRADABLE TT EROSION CONTROL >Q FABRIC M 12"-18" SPACING \ BETWEEN SOIL LIFTS ESG PROPRIETARY JN y f -D ST'A)z' Z � w O � 2 � O� C PROI�G�` rff I RMF ENGINEERING, INC. 8081 Arco Corporate Drive, Suite 300 Raleigh, NC 27617 NC License No. C-1125 U W >Q M `a O<0 Ld w UL7w z O wz� :2 Ld N < a- aw >- 4� o LU zLjj o Io 00 Lr - a a CD c mow= O U u; I�' LJ •3 D M V) 0 0 0 0 0 0 o a s 0 0 — 4—d 1 G� G� 0 U W >Q M `a O<0 Ld w UL7w z O wz� :2 Ld N < a- aw >- 0 C < Z:Ln 2 z LU zLjj o Io 00 Lr - a a CD c mow= O U u; I�' LJ •3 D M V) 0 0 0 0 0 0 o a s 0 0 Y U 1 0 c rn � 3 � •� ami Z 3 ami� 0 0 w 0 Y U7C Q N 4 J J 0 U a Z � Q Q M DU N N � O 02 C QZ ;; w V) w a U NN � U 0 O a a o 0 M o w d U W >Q QZ O F - O<0 Ld w UL7w z O wz� :2 Ld rn < a- aw >- 0 C < Z:Ln 2 z LU zLjj o Io 00 Lr - a LUm CD c mow= O U u; I�' LJ •3 D M V) 0 0 0 0 0 o a s Y U a m c rn � 3 � •� ami 3 ami� 0 0 w V) Y Q Q wz J J 0 U Z � Q Q U � O 02 QZ ;; w V) w a U NN � U O O a a o 0 M w d 0 000 D 0_.'8 �LnLnLn az00 C�Ernrn LU . LU z Ln Ln oCa7oo N W li U W z � � w Q w QZ O F - O<0 Ld UL7w z O wz� :2 Ld O�� ~ < a- aw >- O < Z:Ln 2 z LU zLjj o F- �(=j= a LUm ~ mow= %LvQ Z LJ C/' w Certified by: Sheet reference number: C-509 0 0 0 U a 0 co m E z*h Stream Impacts S4 Temp 50 LF Buffer Impacts Zone 1 Temp. 3,075 SF 1 . Zone 2 Temp. 2,050 SF Buffer Impacts Zone 1 Perm. 3,600 SF Stream Impacts S5 Temp 98 LF Stream Impacts S3 Temp 50 LF Buffer Impacts Zone 1 Temp. 2,350 SF Perm. 300 SF Zone 2 Temp. 1,490 SF Perm. 200 SF Buffer Impacts Zone 1 Temp. 2,275 SF Perm. 600 SF Zone 2 Temp. 1,400 SF Perm. 400 SF Stream Impacts S1 Temp 40 LF S2 Perm 10 LF Buffer Impacts Zone 1 Temp. 1,825 SF Perm. 600 SF Zone 2 Temp. 1,525 SF Perm. 400 SF Buffer Impacts Zone 1 Temp. 2,170 SF Zone 2 Temp. 1,295 SF Horizontal Datum: WGS84 Scale: 1 inch = 150 ft. Figure 4. Proposed Impacts -Revised May 29, 2019 High Temperature Hot Water Supply and Return Durham County, NC Legend Project Boundary(LOD) Proposed HTHW Supply & Return Stream Buffered Ditch 0 Buffer Zone 1 -Temporary Impacts - Buffer Zone 1 - Permanent Impacts 0 Buffer Zone 2 -Temporary Imapcts 0 Buffer Zone 2 -Permanent Impacts Buffer Zones SCALE 1:1800 0 100 200 300 400 Feet 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09