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HomeMy WebLinkAbout20070157 Ver 1_Application_20070125/~. ~~ ~f WETLAND & ECOLOGICAL CONSULTANTS, LLC January 24, 200 Mr. Thomas Brown U.S. Army Corps of Engineers Wilmington District, Raleigh Field Office 6508 Falls of the Neuse Road, Suite i2o Raleigh, North Carolina 2~6i5 20070157 ~. D ~~~~~ ~D JAN 2 ~ Z~O~ Subject: Preconstruction Notification ~~~~` ` ~•`~~th -~ Nationwide Permit Nos. 3 and i8 ~~T ~~S~ Sr~`"~y'~~~ e~~h Colonial Pipeline Company Exposed Pipe Maintenance Bull Run Exposed Pipeline Site Guilford County, North Carolina WEC Project No. o2-o4i9o1-Bull Run ~,®~ ~+~ Dear Mr. Brown: On behalf of our client, Colonial Pipeline Company (CPC), Weiland & Ecological Consultants (WEC) respectfully requests authorization for the above referenced project pursuant to Nationwide Permit (NWP) Nos. 3 and i8 for Maintenance and Minor Discharges, respectively. The use of NWP i8 for this project requires the submittal of this preconstruction notification (PCN). The proposed action consists of a maintenance activity (NWP 3) required for an existing and serviceable petroleum pipeline located within a maintained right-of--way (ROW), and subsequent streambed stabilization and pipeline protection (NWP i8). The proposed activities will require temporary disturbance to Bull Run in Guilford County, North Carolina, at 36° 00.682' N and 79° 54.843' W (Figure ~). Background CPC's maintained ROW is approximately ioo feet in width at the location of the proposed project, and contains three pipelines that transport refined petroleum products. The pipelines are referred to as Lines 22, 23, and 24, and are i6, eight, and eight inches in diameter, respectively. Lateral bank migration and streambed degradation has exposed Line 23 within the stream channel, significantly reducing the required cover protection level of the pipeline. (Photograph No. i and 2). 322J South Cherokee Lane Phone: ~~o-59i-9990 BIdg.Boo Fax: ~~0-59-9993 Woodstock, Georgia 30188 www.wet-eco.com PCNNWPNos. g and i8 January 2¢, 200 Colonial Pipeline Company -Bull Run YYECProjectNo, o2-ogs9ol Proposed Activity in Waters of the U.S. The maintenance activity will require temporary disturbance to approximately 30 linear feet of Bull Run. After the maintenance activities are completed, the pipeline will be protected using pre-cast concrete revetment mats that will be placed into the same 30- linear foot segment of the stream channel (Appendix A). The quantity of this "fill material" below the plane of the ordinary high water mark will be approximately 6.~ cubic yards. To ensure the integrity of the Line z3 at this location, CPC will initially inspect the pipeline for any damages. This will require CPC to excavate a small area over the pipeline location to be inspected. To minimize sedimentation to the creek during the inspection and subsequent maintenance activity, temporary dams will be constructed at each end of the maintenance area and the stream flow will be pumped around the maintenance area. The dams will be constructed of sandbags or other suitable material, and the pump capacity will be able to sufficiently accommodate the stream flow. The pumps will be installed above the upstream dam with the discharge line routed through the maintenance area, discharging immediately downstream of the downstream dam (Appendix B). As an alternative method to using a pump, CPC may use a steel pipe flume to convey the stream flow through the reach of stream to be disturbed. The flume will be used to maintain flow to the downstream side of the maintenance area, and the excavation will be carried out under the flume (Appendix C). Both techniques allow the maintenance to take place without contact to flowing water, thus reducing downstream sedimentation. To prevent future erosion of the streambed at this location, and to protect the pipeline from damage, pre-cast concrete revetment mats will be used to cover and protect the pipeline while stabilizing the excavated portions of the streambed as depicted in Appendix A. The revetment mats will extend approximately 30 linear feet within the stream channel. The stream banks will be stabilized with geotextile erosion control mats, and CPC's Soil Erosion and Sedimentation Control Plan will be implemented to protect the stream from sedimentation (Appendix D). The north bank of Bull Run will be additionally stabilized using longitudinal peaked stone toe protection (i.e., rip-rap). 2 PCNNWPNos. 3 and i8 Colonial Pipeline Company -Bull Run January 2q, 200 WEC Proj ect No. 02-0~ 9oi However, the stone will not be placed below the plane of ordinary high water (Appendix A). Nationwide Permit General Conditions Summary We have provided the following information to document compliance with the USACE NWP general conditions. Each condition and subcategory is itemized below. General Condition i -Navigation The project site does not occur within navigable waters. General Condition 2 -Proper Maintenance The existing pipelines and ROW will continue to be maintained and inspected on a regular basis to ensure public safety. General Condition ~ -Soil Erosion and Sediment Controls Best Management Practices and proper erosion and sedimentation controls will be followed during the maintenance activity (Appendix D). General Condition a -Aquatic Life Movements The maintenance activities within the stream will be minimal and temporary. The revetment mats will be "keyed" into the streambed, and will not impede the passage of normal stream flow or aquatic life. General Condition ~ -Equipment Equipment will be operated from the stream banks. General Condition 6 -Regional and Case-By-Case Conditions Final Regional Conditions for Nationwide Permits in the Wilmington District i. Waters Excluded from NWP or Subject to Additional Notification Requirements: Waters excluded from the use of NWP: i) Waters designated as anadromous fish spawning areas. Not applicable. 2) Waters of the U.S. designated as sturgeon spawning areas. Not applicable. 3 PCNNWPNos. ,3 and i8 January 2¢, 200 Colonial Pipeline Company -Bull Run WECProjectNo. o2-o4i9oi b. Waters subject to additional notification requirements: i) Waters designated as "Outstanding Resource Waters" (ORW), "High Quality Waters" (HQW), "Inland Primary Nursery Areas" (IPNA), contiguous wetlands, or "Primary Nursery Areas" (PNA). Not applicable. 2) Waters in a designated "Area of Environmental Concern" (AEC) in the 20 coastal counties of eastern North Carolina. Not applicable. 3) Waters on a Barrier Island of North Carolina. Not applicable. 4) "Mountain or Piedmont Bog" of North Carolina. Not applicable. 5) Mountain Trout Waters within the 25 designated counties of North Carolina. Not applicable. 6) Areas closed to shell fishing. Not applicable. 2. List of Final Corps Regional Modifications and Conditions for All Nationwide Permits: a. Individual or multiple NWPs may not be used for activities that result in the cumulative loss or degradation of greater than 300 total linear feet of streambed that exhibits important aquatic functions. The use of multiple NWPs (3 and 18) will not result in greater than 300 linear feet of disturbance to the streambed. b. Impacts to more than i5o total linear feet of perennial streambed or intermittent streambed (if the intermittent stream has important aquatic function) require notification and compensatory mitigation. Cumulative stream impacts will not exceed 150 linear feet. 4 PCNNWPNos. 3 and i8 Colonial Pipeline Company -Bull Run January 2q, 200 WECProjectNo. o2-ogi9oi c. For all NWPs which allow the use of concrete as a building material, measures will be taken to prevent live or fresh concrete, including bags of uncured concrete from coming into contact with waters of the state until the concrete has hardened. The concrete revetment mats that will be used to stabilize the streambed and protect the pipelines from future exposures are pre-cast and hardened before they are placed in the stream. d. For all NWPs that allow for the use of rip rap material for bank stabilization, filter cloth must be placed underneath the riprap. Longitudinal peaked stone toe protection will be placed on the right bank, immediately upstream of the project area to prevent further lateral bank migration. The stone will be placed on a geotextile fabric, and will not be placed below the plane of ordinary high water. e. For all NWPs that involve the construction of culverts, measure will be included in the construction that will promote the safe passage offish and aquatic organisms. Not applicable. 3. Additional Regional Conditions Applicable to these Nationwide Permits: NWP i8 may not be used in conjunction with NWP i4 to create high ground for road access using NWP 14. Not applicable. North Carolina Division of Water Quality (DWQ) General Certification Conditions for NWP i8 (GS~S62) (WQC No ~ao2) 1. Enumerating and Reporting of Impacts: a. Streams -Impacts to streams shall be measured as length of the centerline of the normal flow channel. Permanent and/or temporary stream impacts shall be enumerated on the entire project for all impacts regardless of which NWPs are used. Stream relocations and stream bed and/or bank hardening are considered to be permanent impacts. This project will cause temporary disturbance to approximately 30 linear feet of stream within Bull Run during the inspection and maintenance activity (i.e., temporary disturbance authorized by NWP 3). After any required maintenance, in the same 3o-linear foot stream segment, pre-cast concrete revetment mats will be placed over the pipelines as depicted in Appendix A, This approach will stabilize the recently excavated stream bottom while protecting the pipeline from future exposure (i.e., permanent impacts authorized by NWP i8) 5 PCNNWPNos. 3 and 18 Colonial Pipeline Company -Bull Run January 24, 200 WECProjectNo. o2-o4igoi b. Wetlands -Impacts to wetlands shall be measured as area. Permanent and/or temporary wetland impacts shall be enumerated on the entire project for all impacts regardless of which NWPs are used. Not applicable. c. Lakes and Ponds -Impacts to waters other than streams and wetlands shall be measured as area. Not applicable. d. Total stream impacts greater than or equal to i5o cumulative feet of stream length for the entire project require written notification to and approval by the DWQ. Not Applicable, less than i5o linear feet will be impacted. e. Impacts to waters of equal to or greater than i/3 of an acre require written notification to and approval by the DWQ. Not applicable, the area of the stream impacts is less than i/3 acre. f. Wetland impacts of greater or equal to i/3 of an acre east of I-95 and i/io of an acre west of I-95 require written notification to and approval by the DWQ. Any impacts to wetlands adjacent to waters designated as ORW, SA, WS-I, WS-II or Trout or are designated as North Carolina or National Wild and Scenic River and wetlands classified as SWL and/or UWL as well as wetlands described in i5A NCAC 2H.o5o6 (e) require a complete application and written concurrence from DWQ. Not applicable. g. Written notification to DWQ is required for all applications that propose to use NWP 18. This notification requirement will be satisfied by providing two copies of the PCN form to DWQ at the same time that the PCN form is sent to the USACE. A formal application and fee is not required unless DWQ decides that an Individual Certification will be required for the project. Two copies of this PCN submittal will be submitted to DWQ to satisfy this requirement. h. Proposed fill or substantial modification for any amount of wetlands classified in accordance with 15A NCAC 2B.oioi (e) (~) as Unique Wetlands (UWL) shall require written concurrence from DWQ. Not applicable. 6 PCNNWPNos. g and i8 Colonial Pipeline Company -Bull Run January 24, 200 WEC Project No. o2-o¢i 901 2. Impacts to any stream length in the Neuse, Tar-Pamlico or Randleman River Basins (or any other major river basins with Riparian Area Protection Rules [Buffer Rules] in effect at the time of application) require written concurrence under the above referenced Certification. Bull Run is in the Randleman River Basin. However, as specified in the DWQ "Redbook" [i5A NCAC o2B.o25o (2)(f)], the maintenance activity is exempt from the riparian buffer protection permitting requirements. 3. Irrespective of other application thresholds in the General Certification all impacts to perennial waters and their associated buffers require written approval from DWQ. As specified in the DWQ "Redbook" [i5A NCAC o2B.o25o (3)(f)], the maintenance activity is exempt from the riparian buffer protection permitting requirements. 4. Additional site-specific stormwater management requirements may be added to this Certification at DWQ's discretion on a case-by-case basis for projects that have or are anticipated to have impervious cover of greater than 3o percent. Not applicable. 5. Compensatory stream mitigation shall be required at a is i ratio for all perennial and intermittent stream impacts equal to or exceeding i5o feet and that require application to DWQ in watersheds classified as ORW, HQW, Tr, WS-I and WS-II. Not applicable. 6. In accordance with North Carolina General Statute Section i43-2i5.3D(e), any application fora 4oi Water Quality Certification must include the appropriate fee. As described above [General Condition 6 -DWQ General Certification Condition i(g)], formal application and a fee is not required for the use of NWP 18. ~. In accordance with i5A NCAC 2H.o5o6(h), compensatory mitigation may be required for impacts to i5o linear feet or more of stream and/or one acre or more of wetlands for an entire project. Not applicable. 8. For any project involving the re-alignment of streams, a stream relocation plan must be included with the 4oi application for written DWQ approval. Not applicable. 7 PCNNWPNos. g and i8 January 24, 200 Colonial Pipeline Company -Bull Run WECProjectNo. o2-o4r9oi 9. Placement of culverts and other structures in waters, streams, and wetlands must be placed below the elevation of the streambed to allow low flow passage of water and aquatic life. The revetment mat will be placed below the streambed elevation as depicted in Appendix A. io. Appropriate sediment and erosion control practices which equal or exceed those outlined in the most recent version of the "North Carolina Sediment and Erosion Control Planning and Design Manual" or the "North Carolina Surface Mining Manual" whichever is more appropriate shall be in full compliance with all specifications governing proper design, installation and operation and maintenance of such, Best Management Practices in order to assure compliance with the appropriate turbidity water quality standard. Best Management Practices and proper erosion and sedimentation controls will be followed during the maintenance activity (Appendix D). i~. All sediment and erosion control measures placed in wetlands and waters shall be removed and the original grade restored within two months after the Division of Land Resources has released the project. All erosion control devices (i.e., silt fence and staked hay bales) will be removed upon the re-establishment of vegetation at the site. 12. Additional site-specific conditions may be added to projects proposed under this Certification in order to ensure compliance with all applicable water quality and effluent standards. As proposed, this project is in compliance with all applicable water quality and effluent standards. i3. Measures shall be taken to prevent live or fresh concrete from coming into contact with waters of the State until the concrete has hardened. See General Condition 6 -Wilmington District Regional Condition 2c. i4. If an environmental document is required, this Certification is not valid until a Finding of No Significant Impact (FONSI) or Record of Decision (ROD) is issued by the State Clearinghouse. Not applicable. i5. If this Certification is used to access building sites, all lots owned by the applicant must be buildable without additional fill beyond that explicitly allowed under other General Certifications. Not applicable. 8 PCNNWPNos. g and 18 Colonial Pipeline Company -Bull Run January 24, 200 WECProjectNo. o2-o4i9o1 16. Deed notifications or similar mechanisms shall be placed on all lots with remaining jurisdictional wetlands and waters or areas within 5o feet of all streams and ponds. Not applicable. 1'7. When written concurrence is required, the applicant is required to use the most recent version of the Certification of Completion form to notify DWQ when all work included in the 4oi Certification is completed. WEC will submit a Certification of Completion to DWQ on behalf of CPC when the project is complete. i8. Concurrence from DWQ that this Certification applies to an individual project shall expire three years from the date of the cover letter from DWQ or on the same day as the expiration date of the corresponding nationwide Permit (i.e., NWP i8). CPC anticipates completion of this project before the expiration of NWP i8 on March 18, 200. General Condition ~ -Wild and Scenic Rivers The project site is not located in or adjacent to a Wild and Scenic River. General Condition 8 -Tribal Rights The project site is not located within or adjacent to an Indian reservation or nation. General Condition g -Water Quality Certification The activity will be in accordance with the conditions of the DWQ General Certifications for NWP 3 (WQC N0.3494) and NWP 18 (WQC No. 3402). General Condition io -Coastal Zone Management The project site is not located in or adjacent to a coastal area. General Condition ii -Endangered Species No impacts to federally protected species are expected from this project. According to current North Carolina Natural Heritage Program data, the only federally protected species listed to occur in Guilford County is the bald eagle (Haliaeetus leucocephalus). At the maintenance location, the pipeline ROW is regularly mowed, and does not provide suitable habitat bald eagles. General Condition 12 -Historic Properties The proposed maintenance activity will be conducted within the existing pipeline ROW, which has been previously disturbed; thus no archeological resource impacts are probable. No historic structures were noted within the project area, and no aboveground structures are proposed for construction. Therefore, the proposed 9 PCNNWPNos. ,3 and i8 Colonial Pipeline Company -.Bull Run January 2q, 200 WECProjectNo. o2-o¢i9oi pipeline maintenance activity will have no adverse affects to cultural resources in the project vicinity. General Condition 1~ -Notification (a) Timing: The prospective permittee must notify the District Engineer with a PCN as early as possible. The District Engineer must determine if the notification is complete within 3o days of the date of receipt and can request additional information necessary to make the PCN complete only once. WEC believes that the contents of this package constitute a complete PCN. (b) Contents of the Notification: The following information addresses NWP General Condition 13(b): 1) Name, address, and telephone number of the prospective permittee: Mr. Jeff Richards Colonial Pipeline Company 391 Scruggs Road Ringgold, GA 30736 (706) 891-6658 2) Location of the Proposed Project: The proposed maintenance location is located northeast of the community of Jamestown, North Carolina at 36° 00.682' N and 79° 54.843' W (Figure 1). 3) Project description, purpose, effects: See the "Background" and "Proposed Activities in Waters of the U.S." sections of this letter. 4) Delineation of affected special aquatic sites, including wetlands: WEC conducted the field delineation of the project site on January 22, 2007. The only feature considered jurisdictional waters on the subject site is Bull Run. 5-16) NWP special conditions applicable to other NWPs Not applicable. 17) Names of federal protected species affected: Refer to General Condition 11 above. 18) National Register of Historic Places Affected: Refer to General Condition 12 above. to PCNNWP Nos. ,3 and i8 Colonial Pipeline Company -Bull Run (c) Form of Notification: January 24, 200 WECProjectNo. 02-o4lgoi The Wilmington District's PCN form is attached as Appendix E. General Condition la -Compliance Certification Upon completion of the required maintenance, WEC (as CPC's authorized agent) will sign and submit the USACE certification letter documenting compliance with maintenance activities as they are described in this PCN submittal. General Condition 1~i -Use of Multiple Nationwide Permits This project will use both NWP 3 and NWP 18. The cumulative impacts of both parts of this project will not exceed the highest specified acreages or linear feet of either NWP. General Condition 16 -Water Supply Intakes The proposed construction does not include a water supply intake. General Condition 17 -Shellfish Beds The proposed project is not located within or adjacent to a shellfish bed. General Condition 18 -Suitable Material Only material excavated from the maintenance area will be replaced within the trench following maintenance completion. As described above the concrete revetment mats are pre-cast and hardened before they are placed in the stream. General Condition lA -Mitigation The proposed pipeline maintenance activities have been designed to avoid and minimize impacts to jurisdictional waters to the maximum extent practicable. The minimal amount of permanent impact associated with this project (i.e., approximately 30 linear feet of stream) does not exceed any of the regional conditions requiring mitigation (Refer to General Condition 6 above). However, the proposed stream bank stabilization completed to maintain and protect the existing pipelines will result in improved water quality of the stream by reducing soil bank erosion, which offsets the temporary disturbance. General Condition 20 -Spawning Areas Not applicable. General Condition 21 -Management of Water Flows During the maintenance activity, water flows will be maintained by the use of either a dam and pump system (Appendix B) or a flume used to convey the flow of the stream (Appendix C). The concrete revetment mats will be "keyed" in to the 11 PCNNWPNos. 3 and i8 Colonial Pipeline Company -Bull Run January 2q, zoos WECProjectNo. o2-ogi9oi upstream end of the maintenance area to ensure that flow of the stream is not impeded (Appendix A). General Condition 22 -Adverse Effects from Impoundments Not applicable. General Condition 2'~ -Waterfowl Breeding Areas Waterfowl breeding areas do not occur on the subject site. General Condition 24 -Removal of Temporary Fills All temporary soil piles will be removed immediately following the maintenance activity. General Condition 2~, -Designated Critical Resource Waters Not applicable. General Condition 26 -Fills within loo-year Floodplains The project will not result in above grade fill placed within the ioo-year floodplain. General Condition 27 -Construction Period Not applicable. Conclusion The pipeline maintenance activity proposed in jurisdictional waters of the U.S. and the State of North Carolina will result in temporary disturbance to approximately 30 linear feet of Bull Run in Guilford County. During the maintenance activity, appropriate erosion and sedimentation control devices will be used on the entire project site and the proposed activity is in compliance with Nationwide Permit General Conditions and DWQ conditions for Section 401 water quality certification and riparian buffer protection. 12 PCNNWPNos. 3 and i8 Colonial Pipeline Company -Bull Run January 2¢, 200 WECProjectNo. o2-o¢zgoi Based on this submittal, we respectfully request authorization for the aforementioned maintenance project pursuant to NWP Nos. 3 and 18. Please contact the undersigned at 770-591-999o if you have any questions regarding this request. Sincerely, WETLAND & ECOLOGICAL CONSULTANTS, LLC ~/ Timothy J. Funk, C.A.E Richard W. Whiteside, Ph.D., C.W.B. Senior Ecologist Managing Member Enclosures: Figure 1- Site Location Map Appendix A - CPC's Detailed Construction Drawings Appendix B - 'I~pical Dam and Pump Maintenance Dig Appendix C - Typical Open Cut Dry Flume Maintenance Dig Appendix D - CPC's Soil Erosion and Sediment Control Plan Appendix E- Wilmington District PCN Form Appendix F- Site Photographs (2) cc: Mr. Jeff Richards, Colonial Pipeline Company DWQ (2 copies) 13 APPENDIX A DETAILED SITE DRAWINGS 8 " P/PEL/NE L23 8" P~~ L/NE~, ArV CROSS 16" PIPELINE `~ L22 ExPOSEO PIPEL/NE c~~ EXISTING sroNE LOW WATER CROSSING N36° 00.682' W079° 54.843' BULL RUN M. P. 5+500 ~P GUILFORD COUNTY JAMESTOWN, NC COLONIAL PIPELINE COMPANY S U B M A R , ~ N C • TH£Sf CONCEPTUAL OR4N7NG5 ARE' PREPARED BY SUBMAR JAY AMERSON PH. 336/931- 6024 805 DUNN STREET HOUMA, L4. 70360 985/868-0901 FAX 985851-O/A8 fOR ESAMAT/NC PURPOSES ONLY AND ARf NOT CONSTRUCTION ORAW/NCS. QATf.' SHEET SCALE.• DWG. C/~• EmOil.' SUbmO/BSUbmO/COm THESE CONf1DENTlAL DRAN7NG5 MAY NOT Bf COPIED UNLESS APPROVED BY SUBMAR, INC. O 1/l 7/O6 J Qf 3 1 "-20' JB-2387 NOTE.• 1. EXACT PLACEMENT OF MATS AND/OR ANCHORS WILL BE DETERMINED /N THE FIELD. 2. MATS ARE PLACED ON A GEOTEXT/LE FABRIC. 3. STANDARD REVETMENT MAT DIMENSIONS: 8' X 20' X 4.5" 4. CONCRETE MAT /S COMPRISED OF 160 ELEMENTS MOLDED ONTO 5/8" U.V. STABILIZED FIBER ROPE, MIN. TENS/LE STRENGTH 9,500 POUNDS 8 " P/PEL/NE L23 8 " PIPEL/NE L24 ~~ L ATV CROSSING HIGH roE "A" TOE HIGH, BANK PROPOSED LEGEND: L.P.S. T.P. =LONG/TUDINAL PEAKED STONE TOE PROTECTION 16" P/PEL/NE 1~ L22 ". ~- L.P.S. T.P. "A" .~ ~, ~\ c~~ Ex~sriNC sroNE LOW WATER CROSSING ro rAL of (7) MATS BULL RUN M. P. 5+500 ~P GUILFORD COUNTY JAMESTOWN, NC COLONIAL PIPELINE COMPANY S U B M A R , ~ N C • THESE CONCEPTUAL OR4WING5 ARE PREPARED BY SUBMAR JAY AMERSON PH. 336/931- 6024 805 DUNN STREET HOUMA, LA. 70360 985/868-A001 FAX 985/851-0108 fOR fST/AUTING PURPOSES ONLY AND ARE NOT CONSTRUCTION DRAWINGS. DATE' SHEET SCALE.' OWC. 2moil.- su6mor6submor.com THESE CONF/DENTGIL DRAWINGS AG4Y NOT BE COPIED UNLESS APPROVED BY SUBMAR, INC. O 1/17/O6 2 Qf 3 1 "=20' ~8-2387 \\~ \\ \\ ~1 1~ F/LL AREA 8' X 20' X 4.5" MATS 25'-0" /,~ ` 8" P/PEL lNE J 8" P/PEL lNE L24 L23 SECTION "A" - "A" ~ - ~ ~~ ;o \ ~ .Y 21 '-0" 6" GEO TUBE CURRENT FLOW ,~ %~%i ~- roE IN (3) ELEMENTS ,, ~ ~~ ;, ~ ro BE cur ~~~~_.._. ~_ - -- - - ._._ -. -. - 6" GEO TUBE / ' / / /, ~;.~, _ ,%. ro BE cur 8" P/PEL /NE L23 SECTION "B" - "B" BULL RUN M. P. 5+500 ~P GUILFORD COUNTY JAMESTOWN, NC COLONIAL PIPELINE COMPANY S U B M A R , ~ N C • THESE CONCEPTUAL ~4WlNGS AR£ PREPARED BY SUBAIAR JAY AMERSON PH. 336/93 1 - 6024 805 DUNN STREET HOUMA, LA. 70360 985/868-0001 FAX 98.5851-0108 FOR ESTIMATING PURPOSES ONLY AND ARf NOT CONSTR(/CT/ON DRAWINGS. DATE. SHEET SCALE.' DWG. emoih. submarbsubmor.com THESE CONFIDENTIAL DRAWINGS MAY NOT BE COP/f0 UNLESS APPROVED BY SUBMAR, INC. 01/17/06 3 of 3 1 "=5' ~p-2JC77 APPENDIX B TYPICAL DAM AND PUMP MAINTENANCE DIG PERMANENT ROW II II II II III I I III II II II II II II II II III I ICI III _ __ _ SUMP W/INTAKE HOSE FILTER/SCREEN OR SUBMERSIBLE PUMP- WATERBODY PUMP SPOIL CONTAINMENT BERM (SILT FENCE, HAY BALES OR OTHER APPLICABLE MATERIALS) .~ ~ °. III I I I III I I ~M ~~~ - RETAIN A MIN. 25' VEGETATIVE BUFFER TO THE EXTENT POSSIBLE ENERGY DISSIPATOR/ SCOUR PROTECTION ~. FLOW _._- DAM MAINTAIN A MINIMUM 25' I VEGETATIVE BUFFER TO THE EXTENT POSSIBLE BACKHOE FOR STREAM EQUIPMENT CROSSINGS, SEE NOTE 14 FILTER BAG - DD~YW4 r~vmoN w,E cN.E o~~ oauvN ~PPaovfn N75 01-TB-2004 ALS - SEE SHEET 2 FOR NOTES COLONIAL PIPELINE COMPANY ATLANTA, GEORGIA TYPICAL DAM AND PUMP MAINTENANCE DIG AT WATERBODY LESS THAN 15' TROW PRW. N0. DRAWING SNEEf 7N~0050562 COL-0003 1 OF 2 I II SPOIL ~ II I II I II I III 'III I ~I II ~~ I I ~ ~ TROW ENGINEERING CONSULTANTS INC. 1]W LhlROPOIRAN BLVD.. 9UIIE MO TAU/JN15FE. R. USA ]21fq Trorr P~ c~~ yes-~+++ DAM AND PUMP CROSSING THE FOLLOWING IS A SEQUENCE OF CONSTRUCTION AND MITIGATION MEASURES TO BE FOLLOWED AT ALL `DAM AND PUMP' TYPE CROSSINGS. SEQUENCE OF ACTMIIES STEP 1. IMPLEMENT THE TEMPORARY EROSION AND SEDIMENT CONTROLS. STEP 2. INSTALL DRY STREAM CROSSING MATERIALS. STEP 3. EXCAVATE TRENCH AND INSPECT OR REPLACE PIPE. STEP 4. BACKFlLL AND RESTORE STREAM BANKS. STEP 5. REMOVE DAMS. STEP 6. IMPLEMENT PERMANENT EROSION AND SEDIMENTATION CONTROLS. MAINTENANCE OF STREAMFLOW IF THERE IS ANY FLOW IN THE WATERBODY, INSTALL PUMPS TO MAINTAIN STREAMFLOW AROUND THE ISOLATED SECTIONS OF CHANNEL THE PUMP IS TO HAVE 1.5 TO 2 TIMES THE PUMPING CAPACffY OF ANTICIPATED FLOW. A SECOND STANDBY PUMP OF EQUAL CAPACITY IS TO BE READILY AVAILABLE AT ALL TIMES. AN ENERGY DISSIPATOR IS TO BE BUILT TO ACCEPT PUMP DISCHARGE WffHOUT STREAMBED OR STREAMBANK EROSION. IF THE WORK IS PROLONGED BEYOND ONE DAY THE AREA NEEDS TO BE MONITORED OVERNIGHT. NOTES: 1 • SCHEDULE INSTREAM ACTMTY FOR LOW FLOW PERIODS AND FOR THE APPROPRIATE TIMING WINDOW. 2. MARK OUT AND MAINTAIN LIMITS OF AUTHORIZED WORK AREAS WITH FENCING OR FLAGGING TAPE TO AVOID UNNECESSARY DISTURBANCE OF VEGETATION. ENSURE EQUIPMENT OPERATORS WORKING ON THE CROSSING HAVE BEEN BRIEFED ABOUT THIS PLAN AND THE MEASURES NEEDED TO PROTECT WATER QUALITY. INSTALL PRE-WORK SEDIMENT CONTROL MEASURES AS SPECIFIED IN THE PLAN. ALL NECESSARY EQUIPMENT AND MATERWS TO BUILD THE DAMS AND TO PUMP WATER MUST BE ON SITE OR READILY AVAILABLE PRIOR TO COMMENCING IN-WATER CONSTRUCTION. 3. CONTRACTOR SHALL SUPPLY, INSTALL AND MAINTAIN SEDIMENT CONTROL STRUCTURES, AS DEPICTED AND ALONG DOWN GRADIENT SIDES OF WORK AREAS AND STAGING AREAS SUCH THAT NO HEAVILY SILT LADEN WATER ENTERS WATERBODY. a. NO HEAVILY SILT LADEN WATER SHALL BE DISCHARGED DIRECTLY OR INDIRECTLY INTO THE WATERBODY. b. EROSION AND SEDIMENT CONTROL STRUCTURE LOCATIONS AS DEPICTED ARE APPROXIMATE AND MAY BE ADJUSTED AS DIRECTED BY THE COMPANY INSPECTOR TO ACTUAL SffE CONDRIONS. c. SILT FENCE OR HAY BALE INSTALLATIONS SHALL INCLUDE REMOVABLE SECTIONS TO FACILRATE ACCESS DURING CONSTRUCTION. UTILIZE HAY BALE BARRIERS ONLY IN LIEU OF A SILT FENCE WHERE FREQUENT ACCESS IS REQUIRED. d. SEDIMENT LADEN WATER FROM TRENCH DEWATERING SHALL BE DISCHARGED TO A WELL VEGETATED UPLAND AREA, INTO A HAY BALE DEWATERING STRUCTURE OR GEOTEXTILE FlLTER BAG. e. SEDIMENT CONTROL STRUCTURES MUST BE IN PLACE AT ALL TIMES ACROSS THE DISTURBED PORTIONS OF THE RIGHT-OF-WAY EXCEPT DURING EXCAVATION/INSTALLATION OF THE CROSSING PIPE 4. TO THE EXTENT POSSIBLE, MAINTAIN A MINIMUM 25 FEET VEGETATNE BUFFER STRIP BETWEEN DISTURBED AREAS AND THE WATERBODY. INSTALL AND MAINTAIN A SILT FENCE UPSLOPE OF THE BUFFER STRIP ON EACH SIDE OF THE WATERBODY. THE SILT FENCE SHOULD INCORPORATE REMOVABLE `GATES` AS REQUIRED TO ALLOW ACCESS WHILE MAINTAINING EASE OF REPLACEMENT FOR OVERNIGHT OR DURING PERIODS OF RAINFALL 5. CONSTRUCT A TEMPORARY SUMP UPSTREAM OF THE DAM AND LINE WITH ROCKFlLL IF A NATURAL POOL DOES NOT IXIST. INSTALL THE PUMP OR PUMP INTAKE IN THE POOL OR SUMP. DISCHARGE WATER ONTO AN ENERGY DISSIPATOR DOWNSTREAM OF THE WORK AREA. g, EXCAVATED MATERIAL MUST NOT BE STOCKPILED WffHIN 10 Fi. OF THE WATERBODY. THIS MATERL4L MUST BE CONTAINED WITHIN BERM CONTAINMENT, WffH SECONDARY SILT FENCE PROTECTION TO PREVENT SATURATED SOIL FROM FLOWING BACK INTO THE WATERBODY. 7. CHEMICALS, FUELS, LUBRICATING OILS SHALL NOT BE STORED AND NOR SHALL EQUIPMENT BE REFUELED WITHIN 100 Fi. OF THE WATER80DY. PUMPS ARE TO 8E REFUELED AS PER THE SPCC PLANS. TROW ENGINEERING CONSULTANTS INC. "' uao u[maaouax e~w_ sum xoo ruwks¢ a.. ~ aaaa qy wnu~ (aso) xs-es/~ 8. IF A REPLACEMENT, PIPE MAKE-UP AREAS ARE TO BE LOCATED AT LEAST 50 FT. FROM THE WATER'S EDGE (WHERE TOPOGRAPHIC CONDITIONS PERMIT) AND SHALL BE THE MINIMUM AREA NEEDED. 9. DAMS ARE TO BE MADE OF STEEL PLATE, INFLATABLE PLASTIC DAM, SAND BAGS, COBBLES, WELL GRADED COARSE GRAVEL FlL1, OR ROCK FILL DAMS MAY NEED KEYING INTO THE BANKS AND STREAMBED. ENSURE THAT THE DAM AND VEHICLE CROSSING IF NEEDED ARE LOCATED FAR ENOUGH APART TO ALLOW FORA IDE EXCAVA ON. CAP FLUMES USED UNDER VEHICLE CROSSING DURING DRY CROSSING. 10. DEWATER AREA BETWEEN DAMS IF POSSIBLE DEWATERING SHOULD OCCUR IN A STABLE VEGETATES AREA A MINIMUM OF 50 Fi. FROM ANY WATERBODY. THE PUMP DISCHARGE SHOULD BE DISCHARGED ONTO A STABLE SPILL PAD, FlLTER BAG OR HAY BALE STRUCTURE TO PREVENT LOCALIZED EROSION. THE DISCHARGE WATER SHOULD ALSO BE FORCED INTO SHEET FLOW IMMEDIATELY BEYOND THE SPILL PAD BY USING HAY BALES AND THE NATURAL TOPOGRAPHY. DISCHARGED WATER SHALL NOT BE ALLOWED TO FLOW INTO ANY WATERBODY OR WETLAND. IF Tf IS NOT POSSIBLE TO DEWATER THE EXCAVATION DUE TO SOILS WITH A HIGH HYDRAULIC CONDUCTIVITY, THE EXCAVATION IS TO BE CARRIED OUT IN THE STANDING WATER. PUMP ANY DISPLACED WATER AS DESCRIBED ABOVE TO PREVENT OVERTOPPING OF DAMS. 11. INSPECT/REPAIR PIPELINE AS NEEDED. 12. CONTRACTOR SHALL RESTORE THE STREAM BED AND BANKS TO APPROXIMATE PRE-CONSTRUCTION CONTOURS, BUT NOT TO EXCEED 2:1 SLOPE. a. CONTRACTOR SHALL INSTALL PERMANENT EROSION AND SEDIMENT CONTROL STRUCTURES AS INDICATED ON A SITE SPECIFC BASIS. IN THE ABSENCE OF SITE SPECIFIC INFOR- MATION, AFLEXIBLE CHANNEL LINER SUCH AS NAG C125 OR C350 WHICH IS CAPABLE OF WITHSTANDING ANTICIPATED FLOW SHALL BE INSTALLED. ALTERNATIVELY, ROCK RIP-RAP SHALL BE INSTALLED. b. ANY MATERWLS PLACED IN THE STREAM TO FACILffATE CONSTRUCTION SHALL BE REMOVED DURING RESTORATION. BANKS SHALL BE STABILIZED AND TEMPORARY SEDIMENT BARRIERS INSTALLED AS SOON AS POSSIBLE AFTER IN-STREAM WORK 8UT WffHIN 24 HOURS OF COMPL.Ef1NG IN-STREAM WORK. c. MAINTAIN A SILT FENCE OR HAY BALE BARRIER ALONG THE WATERBODY UNTIL VEGETATION IS ESTABLISHED IN ADJACENT DISTURBED AREAS. 13. WHEN THE STREAMBED HAS BEEN RESTORED, THE CREEK BANKS ARE TO BE CONTOURED TO A STABLE ANGLE AND PROTECTED WITH EROSION RESISTANT MATERIAL COMPATIBLE WITH FLOW VELOCITY BETWEEN DAMS (E.G., EROSION CONTROL BLANKETS, CRIBBING, ROCK RIP-RAP, ETC.). THE DAMS ARE TO BE REMOVED DOWNSTREAM FIRST. KEEP PUMP RUNNING UNTIL NORMAL FLOW IS RESUMED. COMPLETE BANK TRIMMING AND EROSION PROTECTION. IF SANDBAGS ARE USED FOR THE DAMS, PLACE AND REMOVE BY HAND TO AVOID EQUIPMENT BREAKING BAGS. 14. TEMPORARY EQUIPMENT CROSSING CAN BE CONSTRUCTED USING EITHER A FLUME CROSSING OR A TEMPORARY BRIDGE. FOR BRIDGE CROSSING DETAILS, REFER TO THE TYPICAL RAILCAR BRIDGE CROSSING OR TYPICAL MAT CROSSING DRAWINGS. REV610N ~ arE oRAwN APPROVED NIS 07-28-2004 ALS - COLONIAL PIPELINE COMPANY ATLANTA, GFAKCUI TYPICAL DAM AND PUMP MAINTENANCE DIG AT WATERBODY LESS THAN 15' iROW PROD. N0. DRAWING SHEET 7HE50050362 COL-0003a 2 Of 2 APPENDIX C TYPICAL OPEN CUT DRY FLUME MAINTENANCE DIG WA1ERBdDY SPOIL CONTAINMENT BERM (SILT FENCE, HAY BALES OR OTHER APPLICABLE MATERIALS) SILT FENCE { I I '~ OPTIONAL ~ ~ ~ ~ ".~ ~:~ --- STEEL PLATE ~~.~ ~W MAINTAIN A MINIMUM 25' ~ ~ VEGETATIVE BUFFER TO ~ THE EXTENT POSSIBLE ~ ~ ~~ ~ FOR STREAM EQUIPMENT ~ ~ ~ ~ CROSSINGS, SEE NOTE 13 ~~ ~ ICI ~~ ~ ~~ ~ ~~ ~ ~ ~ ~I~ ~~ ~~ ~~ ~~ ~ ~~ ~ ~~ ~~ ~) PERMANENT ROW A'r ~ SEE SHEET 2 FOR NOTES TROW ENGINEERING CONSULTANTS INC. ~ CUL~NIAL PIPELINE COMPANY rxo umawurµ nw, smc xw rKwNSS¢, ri, use ~zwe w Wars: Iswl xs-s~si ATIJINTA, GEORGIA TYPICAL OPEN CUT DRY FLUME MAINTENANCE DIG „~,,,, ~~0°` ,~~ AT WATERBODY FROM 15' TO 50' x`i1LE DATE DRAWN APPROVED TROW PRQl. N0. DRAWING SNEEf HIS 07-2Y-2004 AlS - TiESDOSOJ62 COL-0001 1 OF 2 DRY FLUME MAINTENANCE WORK THE FOLLOWING IS A SEQUENCE OF CONSTRUCTION AND MITIGATION MEASURES TO BE FOLLOWED AT ALL 'DRY FLUME' WORK LOCATIONS SEQUENCE OF ACTMTIES STEP 1. IMPLEMENT THE TEMPORARY EROSION AND SEDIMENT CONTROLS. STEP 2. INSTALL DRY STREAM CROSSING MATERIALS. STEP 3. EXCAVATE TRENCH AND INSPECT/REPAIR AS NECESSARY. STEP 4. BACKFlLL AND RESTORE STREAM BANKS. STEP 5. REMOVE FLUME CROSSING. STEP 6. IMPLEMENT PERMANENT EROSION AND SEDIMENTATION CONTROLS. NOTES: 1. MARK OUT AND MAINTAIN LIMITS OF AUTHORIZED WORK AREAS WITH FENCING OR FLAGGING TAPE TO AVOID UNNECESSARY DISTURBANCE OF VEGETATION. ENSURE EQUIPMENT OPERATORS WORKING ON THE CROSSING HAVE BEEN BRIEFED ABOUT THIS PLAN AND THE MEASURES NEEDED TO PROTECT WATER QUALffY. 2. ALL NECESSARY EQUIPMENT AND MATERIALS TO BUILD THE FLUME MUST 8E ON SffE OR READILY AVAILABLE PRIOR TO COMMENCING IN-WATER WORK. 3. TO THE EXTENT POSSIBLE, MAINTAIN A MINIMUM 25 FT. VEGETATNE BUFFER STRIP BETWEEN DISTURBED AREAS AND THE WATERBODY. INSTALL AND MAINTAIN A SILT FENCE OR HAY BALE BARRIER UPSLOPE OF THE BUFFER STRIP ON EACH SIDE OF THE WATERBODY. 4. CONTRACTOR SHALL SUPPLY, INSTALL AND MAINTAIN SEDIMENT CONTROL STRUCTURES, AS DEPICTED OR ALONG DOWN GRADIENT SIDES OF WORK AREAS AND STAGING AREAS SUCH THAT NO HEAVILY SILT LADEN WATER ENTERS THE WATERBODY. a. NO HEAVILY SILT LADEN WATER SHALL BE DISCHARGED DIRECTLY OR INDIRECTLY INTO THE WATERBODY. b. EROSION AND SEDIMENT CONTROL STRUCTURE LOCATIONS AS DEPICTED ARE APPROXIMATE AND MAY BE ADJUSTED AS DIRECTED BY THE COMPANY INSPECTOR TO ACTUAL SITE CONDRIONS. c. SILT FENCE OR HAY BALE INSTALLATIONS SHALL INCLUDE REMOVABLE SECTIONS TO FACILITATE ACCESS DURING CONSTRUCTION. UTILIZE HAY BALE BARRIERS ONLY IN LIEU OF A SILT FENCE WHERE FREQUENT ACCESS IS REQUIRED. d. SEDIMENT LADEN WATER FROM TRENCH DEWATERING SHALL BE DISCHARGED TO A WELL VEGETATED UPLAND AREA INTO A HAY BALE DEWATERING STRUCTURE OR GEOTEXTILE FlLTER BAG. e. SEDIMENT CONTROL STRUCTURES MUST BE IN PLACE AT ALL TIMES ACROSS THE DISTURBED PORTIONS OF THE RIGHT-OF-WAY EXCEPT DURING EXCAVATION/REPAIR. 5. FLUME CAPACTIY DURING DRY CROSSING SHALL BE SUFFlCIENT TO ACCOMMODATE 1.5 TIMES THE FLOW MEASURED AT THE TIME OF CONSTRUCTION PROVIDED THAT THE FLUMES WILL BE IN PLACE NOT MORE THAN 96 HOURS AND NO PRECIPRATION IS FORECAST. FLUME CAPACTIY FOR VEHICLE ACCESS SHALL BE SUFFlCIENT TO PASS THE 2 YEAR DESIGN FLOW OR THE FLOW REASONABLY EXPECTED TO OCCUR DURING THE INSTALLATION. EXCESS FLUMES REQUIRED FOR LONGER TERM ACCESS SHALL BE CAPPED DURING DRY CROSSING PROCEDURES. 6. ENSURE THAT THE DAMS AND EQUIPMENT CROSSING ARE LOCATED FAR ENOUGH APART TO ACCOMMODATE THE REQUIRED EXCAVATION. 7, PLACE IMPERVIOUS DAMS AT EACH END OF THE FLUME, UPSTREAM FIRST, THEN DOWNSTREAM. ACCEPTABLE ALTERNATNES INCLUDE GRAVEL WITH RIP-RAP PROTECTION, SAND BAGS, STEEL PLATE AND ROCKFlLL. DURING INSTALLATION, INSTALL AN IMPERVIOUS MEMBRANE, 13 IF NECESSARY, TO LIMB LEAKAGE, DAMS MAY NEED KEYING INTO THE BANK AND STREAMBED. TROW ENGINEERING CONSULTANTS INC. ixo utmowurµ eiw. sme am rawuss¢ n.. use .,,,.. ~~~ ~~, 8. EXCAVATE AS REQUIRED TO INSPECT OR REPLACE PIPE. 9. EXCAVATED MATERL4L MUST NOT BE STOCKPILED WITHIN 10 FT. OF THE WATERBODY. THIS MATERIAL MUST BE CONTAINED WITHIN BERM CONTAINMENT, WITH SECONDARY SILT FENCE PROTECTION TO PREVENT SATURATED SOIL FROM FLOWING BACK INTO THE WATERBODY. 10. DEWATERING SHOULD OCCUR IN A STABLE VEGETATED AREA A MINIMUM OF 50 FT. FROM ANY WATERBODY. THE PUMP DISCHARGE SHOULD BE DIRECTED ONTO A STABLE SPILL PAD, FlLTER BAG OR HAY BALE STRUCTURE TO PREVENT LOCALJZED EROSION. THE DISCHARGE WATER SHOULD ALSO BE FORCED INTO SHEEP FLOW IMMEDIATELY BEYOND THE SPILL PAD USING HAY BALES AND THE NATURAL TOPGRAPHY. 11. FLUMES SHOULD BE REMOVED AS SOON AS POSSIBLE, WHEN NO LONGER REQUIRED FOR IN-STREAM ACTNTIY OR FOR ROAD ACCESS, AS FOLLOWS: a. REMOVE THE VEHICLE CROSSING RAMP. BANKS ARE TO BE RESTORED TO A STABLE ANGLE AND PROTECTED WITH EROSION RESISTANT MATERIAL COMPATIBLE WITH THE FLOW CONDRIONS (E.G., EROSION CONTROL BLANKETS, CRIBBING, ROCK RIP-RAP ETC.) TO THE MAXIMUM EXTENT POSSIBLE BEFORE REMOVING THE DAMS. b. REMOVE DOWNSTREAM DAM. c. REMOVE UPSTREAM DAM. d. REMOVE FLUME. e. COMPLETE BANK TRIMMING AND EROSION PROTECTION. IF SANDBAGS ARE USED FOR THE DAMS, PLACE AND REMOVE BY HAND TO AVOID EQUIPMENT BREAKING BAGS. CONTRACTOR SHALL RESTORE THE STREAM BED AND BANKS TO APPROXIMATE PRE-CONSTRUCTION CONTOURS, BUT NOT TO EXCEED 2:1 SLOPE. a. CONTRACTOR SHALL INSTALL PERMANENT EROSION AND SEDIMENT CONTROL STRUCTURES AS INDICATED ON A SffE SPECIFlC BASIS. IN THE ABSENCE OF SffE SPECIFlC INFOR- MATION, AFLEXIBLE CHANNEL LINER SUCH AS NAG C125 OR C350 WHICH IS CAPABLE OF WffHSTANDING ANTICIPATED FLOW SHALL BE INSTALLED. ALTERNATNELY, ROCK RIP-RAP SHALL BE INSTALLED. b. ANY MATERIALS PLACED IN THE STREAM TO FACILITATE CONSTRUCTION SHALL BE REMOVED DURING RESTORATION. BANKS SHALL BE STABILIZED AND TEMPORARY SEDIMENT BARRIERS INSTALLED AS SOON AS POSSIBLE AFTER IN-STREAM WORK, BUT WffHIN 24 HOURS OF COMPLETING THE IN-STREAM WORK. c. MAINTAIN A SILT FENCE OR HAY BALE BARRIER ALONG THE WATERBODY UNTIL VEGETATION IS ESTABLISHED IN ADJACENT DISTURBED AREAS. TEMPORARY EQUIPMENT CROSSING CAN BE CONSTRUCTED USING EITHER A FLUME CROSSING OR A TEMPORARY BRIDGE. FOR BRIDGE CROSSING DETAILS, REFER TO THE TYPICAL RAILCAR BRIDGE CROSSING OR TYPICAL MAT CROSSING DRAWINGS. 12. COLONIAL PIPELINE COMPANY ATLANTA, GEORGIA TYPICAL OPEN CUT DRY FLUME MAINTENANCE DIG - a„M,ti, °~,~°04 , ~ AT WATERBODY FROM 15' TO 50' NTS 1 01-28-2004 1 ALS 7ROW PROD. N0. DRAWING SHEEP 7HF50050362 COL-000ta 2 OF 2 APPENDIX D CPC'S SOIL EROSION AND SEDIMENTATION CONTROL PLAN Colonial Pipeline Company Soil Erosion and Sediment Control Plan For Pipeline Maintenance Activities Objective Disturbed areas are to be restored as close as practical to their original contours and conditions so that once vegetation is reestablished, erosion will be reduced to the same or lower level that existed prior to disturbance. Description This section defines the soil erosion and sediment control measures that Colonial Pipeline Company will implement during and after inspection and repairs of the pipeline are complete. The objectives of this plan are to establish general guidelines for controlling erosion and sedimentation and to specify criteria for sensitive or particularly susceptible soil areas. The plan incorporates measures to control erosion and sedimentation, including minimizing cover removal, limiting the time of exposure, limiting the flow of water onto the disturbed right-of--way, and filtering or settling out sediment from water flowing from the right-of--way. The primary objective of the soil erosion and sediment control plan is to reduce the area and duration of soil disturbance and reestablish permanent vegetation as soon after construction as possible, thereby minimizing long-term erosion and sedimentation. Some erosion is inevitable during construction; however, the plan includes measures to reduce erosion to the minimum practical. Colonial Pipeline Company plans to reduce soil erosion and provide sediment control during the repair of the pipeline at the project site by incorporating the following measures: • Water pumped from the construction area as part of the dewatering operation from the excavation will be filtered through silt filtration bags and discharged to awell-vegetated area. • All work will be confined within the existing right-of--way. Staked hay bales and silt fence will be installed around the worksite and maintained until vegetation is established. Proper controls will be added if necessary during construction. • All terms and conditions within Nationwide Permit 3 will be followed. • Erosion control measures will be installed prior to conducting any soil disturbing activities associated with the pipeline maintenance activity. 1 of 2 • Clearing of vegetation will be kept to an absolute minimum and confined to the existing pipeline easement area. The easement area is 5o feet in width and devoid of large trees. The right of way is vegetated with undergrowth grasses and other short vegetation. • Vegetation will be reestablished within disturbed areas and along stream banks as soon as possible upon completion of work. Disturbed areas will be seeded with a wetland seed mixture • All erosion and sediment control measures will be inspected every two weeks at a minimum and after every significant rainfall event of o.5 inch or more until disturbed areas have been stabilized. Identified damages to control measures must be repaired immediately. Refuse and Waste Disposal Colonial's representative will not allow the Contractor to discard any litter, including paper, bottles, cans, rags, sacks, welding rod stubs, fuel, crankcase draining, coating materials, equipment, and junk pipe in the ditch or along the right-of--way. All refuse must be collected and disposed in accordance with company specifications. Personnel will be instructed regarding the correct procedure for waste disposal. Maintenance/Inspection Procedures The following inspection and maintenance practices will be implemented to maintain erosion and sediment controls: i. All control measures will be inspected every two weeks at a minimum and following any storm event of o.5 inch or greater. 2. All control measures will be maintained in good working order. If a repair is necessary, it will be initiated within 24 hours of the report. 3. Built-up sediment will be removed from silt fences when it has reached one-third the height of the fence. 4. Silt fences will be inspected for depth of sediment, tears, secure attachment of the fabric to the fence posts, and firm placement of the fence posts in the ground. 5. Temporary and permanent seeding and planting will be inspected for bare spots, washouts, and healthy growth. 6. Colonial Pipeline Company will select individuals to be responsible for inspections, maintenance and repair activities, and completion of the inspection and maintenance report. Personnel selected for inspection and maintenance responsibilities will receive training from Colonial Pipeline Company or its representative. Personnel must be trained in all practices necessary for maintaining the erosion and sediment controls used on-site. 2 of 2 APPENDIX E WILMINGTON DISTRIC PCN FORM ~®U R°f ~ 2 0 0 7 0 1 5 7 ~®P~ Office Use Only: Form Version March 05 USACE Action ID No. DWQ No. (If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) I. Processing Check all of the approval(s) requested for this project: ® Section 404 Permit ^ Riparian or Watershed Buffer Rules ^ Section 10 Permit ^ Isolated Wetland Permit from DWQ ^ 401 Water Quality Certification ^ Express 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: NWP 18 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: 4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII, and check here: ^ 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), chec re: ,fl ~ ~, ~r~ II. Applicant Information ~ ''~ Q JAN ~ ~ LJ[~l 1. Owner/Applicant Information Name: Mr. Jeff Richards, Colonial Pipeline Compar~,~_,~NR: W;q;_;~ v;~;;,L,,,. Mailing Address: ~~uaitylr~,EftAFZgNCH 391 Scru~~s Road Rin~~old GA 30736 Telephone Number: (7062891-6658 Fax Number: (706) 891-9916 E-mail Address: jrichard(a~colpipe.com 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Timothy J. Funk /Richard W. Whiteside Company Affiliation: Wetland & Ecological Consultants Mailing Address: 3225 S. Cherokee Lane Bldg. 800 Woodstock. GA 30188 Telephone Number: (770) 591-9990 Fax Number: (770) 591-9993 E-mail Address: t~(a~wet-eco.com Updated 11/1/2005 Page 5 of 12 III. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Bull Run Exposed Pipe 2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A 3. Property Identification Number (Tax PIN): N/A 4. Location County: Guilford Nearest Town: Jamestown Subdivision name (include phase/lot number): N/A Directions to site (include road numbers/names, landmarks, etc.): From the intersection of Main St. and Guilford College Rd. in Jamestown take Guilford College Road north to Mackay Road. Turn right and proceed east onto Mackay Road. CPC's ROW crosses Mackay Road west of its intersection with Killdaire Woods Drive. The site is located approximately 4501inear feet south of Mackav Road within CPC's ROW. 5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) Decimal Degrees (6 digits minimum): 36.0108° N 79.9137° W 6. Property size (acres): 7. Name of nearest receiving body of water: Bull Run 8. River Basin: Cape Fear (Note -this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/ma~s/.) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: The site is an existing_pipeline ROW that is periodically mowed. Updated 11/1/2005 Page 6 of 12 10. Describe the overall project in detail, including the type of equipment to be used: See the description in the "Background" and "Proposed Activities in Waters of the U.S." sections of the attached cover letter. 11. Explain the purpose of the proposed work: To repair an exposed petroleum pipeline, and to prevent future exposure. IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. N/A V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. No VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. Each impact must be listed separately in the tables below (e.g., culvert installation should be listed separately from riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts, permanent and temporary, must be listed, and must be labeled and clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) should be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Provide a written description of the proposed impacts: See the "Proposed Activities in Waters of the U.S." section of the attached letter. Updated 11/1/2005 Page 7 of 12 2. Individually list wetland impacts. Types of impacts include, but are not limited to mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. Wetland Impact Site Number (indicate on map) Type of Impact Type of Wetland (e.g., forested, marsh, herbaceous, bog, etc.) Located within 100-year Floodplain ( es/no) Distance to Nearest Stream (linear feet) Area of Impact (acres) N/A Total Wetland Impact (acres) 0 3. List the total acreage (estimated) of all existing wetlands on the property: N/A 4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. To calculate acreage, multiply length X width, then divide by 43,560. Stream Impact Number (indicate on ma) Stream Name Type of Impact Perennial or Intermittent? Average Stream Width Before Im act Impact Length (linear feet) Area of Impact (acres) Bull Run Revetment mat Perennial 10 feet 30 0.01 Total Stream Impact (by length and acreage) 30 0.01 5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.). Open water impacts include, but are not limited to fill, excavation, dredging, flooding, drainage, bulkheads, etc. Open Water Impact Site Number (indicate on ma) Name of Waterbody (if applicable) Type of Impact Type of Waterbody (lake, pond, estuary, sound, bay, ocean, etc.) Area of Impact (acres) N/A Total Open Water Impact (acres) 0 Updated 11/1/2005 Page 8 of 12 6. List the cumulative impact to all Waters of the U.S. resultin>; from the project: Stream Impact (acres): 0.01 Wetland Impact (acres): 0 Open Water Impact (acres): 0 Total Impact to Waters of the U.S. (acres) 0.01 Total Stream Impact (linear feet): 30 7. Isolated Waters Do any isolated waters exist on the property? ^ Yes ®No Describe all impacts to isolated waters, and include the type of water (wetland or stream) and the size of the proposed impact (acres or linear feet). Please note that this section only applies to waters that have specifically been determined to be isolated by the USACE. 8. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ^ uplands ^ stream ^ wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): Current land use in the vicinity of the pond: Size of watershed draining to pond: Expected pond surface area: VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. The proposed proiect is designed to minimize impacts to iurisdictional waters as much as practicable. The revetment mats will only be used to protect CPC's ~peline and to stabilize the area that has been excavated. VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. Updated 11/1/2005 Page 9 of 12 USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on January 15, 2002, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o. enr.state.nc.us/ncwetlands/strm~ide.html. 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. N/A 2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at (919) 715-0476 to determine availability, and written approval from the NCEEP indicating that they are will to accept payment for the mitigation must be attached to this form. For additional information regarding the application process for the NCEEP, check the NCEEP website at http://h2o.enr.state.nc.us/wry/index.htm. If use of the NCEEP is proposed, please check the appropriate box on page five and provide the following information: Amount of stream mitigation requested (linear feet): Amount of buffer mitigation requested (square feet): Amount of Riparian wetland mitigation requested (acres): Amount ofNon-riparian wetland mitigation requested (acres): Amount of Coastal wetland mitigation requested (acres): Updated 11/1/2005 Page 10 of 12 IX. Environmental Documentation (required by DWQ) 1. Does the project involve an expenditure of public (federaUstate/local) funds or the use of public (federal/state) land? Yes ^ No 2. If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ^ No ^ 3. If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ^ No ^ X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. 1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ^ No 2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. * Impact I Required Zone ~~,,,,,,.o f o«~ Multiplier ,~,~;«;,..,«;,.,, 1 3 (2 for Catawba) 2 1.5 Total * Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an additiona120 feet from the edge of Zone 1. 3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Riparian Buffer Restoration /Enhancement, or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0244, or .0260. Updated 11/1/2005 Page 11 of 12 XI. Stormwater (required by DWQ) Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss Stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. If percent impervious surface exceeds 20%, please provide calculations demonstrating total proposed impervious level. The project will not result in impervious surfaces. BMP's will be incorporated as described under General Condition 9 of the attached cover letter. XII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ^ No Is this anafter-the-fact permit application? Yes ^ No XIV. Cumulative Impacts (required by DWQ) Will this project (based on past and reasonably anticipated future impacts) result in additional development, which could impact nearby downstream water quality? Yes ^ No If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent North Carolina Division of Water Quality policy posted on our website at http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description: Upon completion of the project the pipeline should be repaired and protected from future damage. No other work will be needed. XV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). //.~...~L~~ //a '06 Applicant/Agent's Signature ~ Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Updated 11/1/2005 Page 12 of 12 '~.'`.~, mom, Photograph No. 2: View of where the pipeline is exposed within Bull Run (obscured by turbid water . PCNNWP Nos. g and 18 Photos taken January 22, 200 Colonial Pipeline Company YVEC Project No. o2-ogl9oi -Bull Run PCNNWPNos. Sand i8 Photos taken January 22, 200 Colonial Pipeline Company WEC Project No. o2-o4i9oi -Bull Run ~ ~ " ,~- v` ~, :e ~'~,:,~. ~,'. ~ ~` .tom : ~ ~ ~3 ~~~ ~ z~r', ~. y ~ ~ ~~• ,q~' ••-+_ "F''~ sue'`; ~4. ~ ~ ~ ,. ~, ~ ~ ~ ..._ "- fi ~ '~ Se '~ Y:^~~ ~_. 5 Photograph No. 3: View of existing rock fords/ ATV crossings used by the landowner immediately downstream of the exposed pipe. ~1 d~y'x Wj 9 N 9 .~ ~ ~ ~ a ((4 z~ yam, fJ , l.r y.. rl.- ~l, ~ S $ .J yf,. ~ 1f1 ~,~ ~~' ,d - _ 'T d` ~~ ~ 71 ~ Iy1~ i1 y d~~ ~, ~.. µ y~ y ~. Y . ~' Ca k F S R K 3~'y „pr ~, r ~* ~ r ~ a . -~c.. '; ~~.+~ ~~ } I~ ;~. rpa FO ~. . "k~' ~. '~ '. ~i ~.c;',: t;,e~ ~}°,..k ~ t ~ 5 ""!'r`Y ~ ~4r' k :, „ +x Wf "~~u~. .{.'`.~' W;, -..t': ~' yt~' .. 1- ,tt:-: gy~.I~ .aa: yaf .r1R ~ia~~{,~'y`i~' '~' Rx ~.'°.ae ~~~ tMYG ~ - ~ ~ A ~} ~ ~ P'*~:Yi~ ~~t V Std ` ~y~~.1yt i ^: 'q~_.. d ~ r ay ~. a 1. ~ y ..: ~ ~ ~ ~~y~~,r ~' .~~~ '~~ .sue. a...a $~ ~ ~'i .: ~1. 8 ~.. ,e +~ ; 1'r'4~ y, '~"'4~ 1 ~.,r RJR "~ ~n `• T~.`+F tAf ~`F ~. eY'.~ '4 0 • ~y ~f4 ~,j-. ~~ {a. i~ .SH~'(F• ~y }, M11+3, :~ ¢ ~ C` ~ ~ 2 b ,' 1. .. ~~ > .. '+ "^ C ~ ~... Rte`^~, .. Photograph No. 4: View of the CPC ROW at the maintenance location.