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HomeMy WebLinkAbout20191006 Ver 1_I-3819 B 2020-06-25 NCDOT Response to NOD_20200626,gsr�re., STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION Roy COOPER GOVERNOR June 25, 2020 Ms. Amy Chapman Transportation Permitting Unit, Supervisor NCDENR, Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Subject: Notice of Deficiency NOD-2020-PC-0222 Dear Ms. Chapman: J. ERIC BOYETTE SECRETARY In reference to the above noted Notice of Deficiency (NOD) issued by letter dated May 22, 2020 the Department offers the following response as requested in your letter. On Monday, May 18, 2020, upon arrival of our personnel to the project site, the contractor, Lane Construction Corporation, informed us of an issue that occurred over the weekend. An equipment operator for the contractor had reported to work over the weekend and attempted to re -position crane mats adjacent to a wetland area of the project, noted on the permit drawings as Site 5. The operator was using a tracked excavator and managed to get the piece of equipment into the wetland area and became stuck in the wet soils. The operator continued unsuccessfully to free the equipment from the wetland and ultimately informed Lane management of the issue on the morning of May 18, 2020 who immediately informed the Department. The operator was not authorized to perform this work, reported to work without advising supervision, and independently made the decision to work alone. The operator's actions were not in compliance with the contractor's policies and the work methods were contradictory to how operations are handled in environmentally sensitive areas of the project. The operator's employment with the contractor was terminated after an investigation of the incident. There was no Department personnel present during the time the incident occurred nor were we notified of any work to be performed in this area of the project. Our technicians are trained on best management practices and permit requirements sufficient to recognize non- compliance issues especially of this extent and would have taken measures to stop or eliminate damage to the wetland had they been present. We also believe that Lane Construction's personnel are cognizant of these requirements as well, excluding this particular operator. Mailing Address: NC DEPARTMENT OF TRANSPORTATION ENVIRONMENTAL ANALYSIS UNIT 1598 MAIL SERVICE CENTER RALEIGH NC 27699-1598 Telephone: (919) 707-6000 Fax: (919) 250-4224 Customer Service: 1-877-368-4968 Website: ncdot.gov Location: 1000 BIRCH RIDGE DRIVE RALEIGH NC 27610 Lane Construction mobilized resources to recover the excavator and restore the area to the extent possible prior to the impending rain events predicted for the following days. Efforts were also made to establish protective measures around the site such as temporary matting, temporary berm, and reestablished the stream channel to prevent further damages to the wetland area. The NCDOT and Lane Construction have demonstrated commitment to perform work on this project in accordance with the environmental permit requirements and in accordance with the Best Management Practices for Construction and Maintenance Activities. Please see the following comments pursuant to your response request: Assessment of additional stream impacts and wetland impacts beyond the permitted boundaries. We have surveyed the impacted area and compared to the area permitted for Site 5. A total of 0.23 acre of wetland was temporarily impacted, and a total of 37 linear feet of stream was temporarily impacted beyond the permitted boundaries. the removal of the trackhoe. • A wetland restoration plan with monitoring that includes all areas not authorized to be impacted. See attachment Training for all equipment operators on I-3819B. Lane Construction conducted training for all field employees on June 10, 2020. Mr. Casey Hurley with Lane Construction conducted the training. The training session covered incident review and prevention, review of permit project specific and general conditions, review of stream crossings, and erosion control review. The training was attended by Ms. Donna Hood, Mr. Matthew Evans, Mr. Jeff Wyatt and other NCDOT staff. The Department regrets that this issue occurred on this project. It clearly was not an intentional action by the contractor, but an action by an insubordinate employee without understandable reason. It is our intention to ensure that this area is restored to satisfactory condition and future work continues to remain in compliance with the permit requirements for this project. Please advise if further information is requested. We understand that Lane Construction will also provide a response to this notice. Sincerely, EpDocuSigned by: Lur S. aovis) «� 8CV43F6874A457... Philip S. Harris III, P.E., CPM Environmental Analysis Unit Head Electronic copies only: Mark Stafford, P.E. Larry S. Carpenter, Jr., PE Matthew Evans, P.E. Eric Alsmeyer Jeff Wyatt Wetland Restoration Plan At Permit Site 5 For I-40/I-77 Interchange Improvements Iredell County TIP No. I-3819B June2020 Lane Construction performed on -site restoration of temporary wetland and stream impacts at Permit Site 5 for the I-40/I-77 interchange improvements (TIP No. I-381913). The restoration mitigated unauthorized impacts of approximately 0.23 acre of temporary impacts to wetland WD and 77 linear feet of temporary impacts to stream SJ that occurred during the construction phase of the I-3819B project. The restoration site is located just upstream of where the new two-lane bridge will cross wetland WD and stream SJ. It is also upstream of 40 linear feet of permitted temporary impacts to stream SJ for a temporary pipe that was eliminated and is no longer required for site access. Lane Construction will restore 0.23 acre of wetland WD, including 0.15 acre of temporary impacts from the mired trackhoe, 0.03 acre of temporary impacts from sediment deposition, and 0.05 acre of temporary impacts for site access, and restore 77 linear feet of stream SJ (40 linear feet of temporary impacts to stream SJ were previously permitted, therefore the restoration of 77 linear feet of temporary impacts results in a net increase of 37 linear feet of temporary impacts that were not previously permitted). EXISTING CONDITIONS The restoration project is located in Iredell County, approximately 0.25 miles south of I-40 and 0.06 miles to the west of I-77 southbound, near the I-40/I-77 interchange and adjacent to the new two- lane ramp bridge currently under construction. In the Natural Resources Technical Report (NRTR) memorandum dated July 10, 2018, wetland WD was identified as a medium quality riverine swamp forest per the North Carolina Wetland Assessment Method (NCWAM). Based on a June 1, 2020 site visit, in the intact portion of wetland WD near the impacted area, vegetation is primarily herbaceous and is dominated by giant goldenrod (Solidago gigantea), arrowleaf tearthumb (Polygonum sagittatum), barnyardgrass (Echinochloa crus-galli), dallisgrass (Paspalum dilatatum), and fall panicgrass (Panicum dichotomiflorum), with black willow (Salix nigra), and boxelder (Acer negundo) saplings further from the stream. Prior to the unauthorized disturbance, the area of impacts in wetland WD was similar to the adjacent wetland area, with herbaceous vegetation as the dominant stratum closer to the stream and tree and shrub saplings occurring further upslope. Stream SJ is identified as a perennial upper tributary of Fourth Creek. The stream channel upstream of the area of unauthorized temporary impacts is approximately 1 to 2 feet wide at the channel bottom and top of bank JOB), the bank height is approximately 4 to 6 inches, and the bed substrate is silt and clay. The stream channel downstream of the area of temporary unauthorized impacts is approximately 2 to 3 feet wide at the channel bottom, 3 to 4 feet wide at TOB, the bank height is approximately 2 to 3 feet, and the bed substrate is silt and clay. Since the unauthorized temporary impacts, the machinery has been removed and the disturbed ground surface of the wetland has been restored to the pre -impact contours. Erosion control matting has been laid down along the banks of the stream and over disturbed portions of the wetland. The stream channel and banks have also been regraded. On June 3, 2020, Lane Construction met on -site with Donna Hood with NCDWR and Matthew Evans with NCDOT to inspect the restoration areas and review the progress of restoration activities. PROPOSED CONDITIONS Design The proposed wetland mitigation will consist of restoring 0.23 acre of riverine wetland in wetland WD. Regrading to pre -impact contours, rebuilding the natural berm adjacent to the stream that existed previously, and the placement of erosion control matting have already occurred as part of the wetland restoration activities in the 0.15 acre of temporary impact area from the trackhoe. Sediment has been removed from the 0.03-acre area that experienced temporary sediment deposition outside of the trackhoe disturbance. No regrading or erosion control matting is being proposed in the 0.03- acre area or the 0.05-acre temporarily impacted for site access. Native grass seeding and mulching will be used to restore all temporarily impacted wetland areas. The proposed stream restoration will consist of restoring 77 linear feet of perennial stream SJ. The stream banks have been regraded and stabilized with erosion control matting as part of the stream restoration activities. Lane Construction attempted to match the restored channel to pre -impact cross sectional area. This area is represented in the attached as -built cross section that depicts survey data collected by Lane Construction on June 1, 2020. A plan view of the restoration areas and detail of the erosion control matting area are also attached. Vegetation Planting Native wetland grass seeding and mulching will be performed on all disturbed areas within the wetland and stream bank restoration area for stabilization purposes according to guidance and standard procedures of NCDOT's Roadside Environmental Unit (Appendix A). MONITORING Upon completion of the restoration activities, the following monitoring strategy is proposed for the mitigation site. Lane Construction will document monitoring activities over the course of one year on the site, with monitoring site visits occurring once in the fall of 2020 and once in the spring of 2021. A report following the completion of each monitoring site visit will be submitted to the regulatory agencies. The need for additional monitoring of the restored areas will be evaluated after one year of monitoring. Lane Construction will monitor the wetland and stream bank restoration site for survival and aerial cover of vegetation by visual observation and photo points. Lane Construction shall monitor the site for one year. Additional monitoring will only occur if the restoration project does not meet the success criteria (see below), in which case a supplemental plan will be developed. Monitoring will begin in the fall of 2020 to allow for establishment of vegetation from the site seeding. No specific wetland hydrological monitoring is proposed for this wetland restoration site. The target elevation was based on pre -impact wetland elevation data which will ensure the hydrology in the restored area is similar to the hydrology in the adjacent wetland area. For the stream restoration, visual observations of bank stability will be documented and photographs will be taken in the restored stream segment and at upstream and downstream reference locations during monitoring site visits. Success Criteria Success criteria will include the following: • 85% total cover of herbaceous species after one year following completion of the restoration activities. • No disruption of erosion control matting or substantial bank erosion. Appendix A. NATIVE GRASS SEEDING AND MULCHING: Native Grass Seeding and Mulching shall be performed on the disturbed areas of wetlands and riparian areas, and adjacent to Stream Relocation and/or trout stream construction within a 50 foot zone on both sides of the stream or depression, measured from top of stream bank or center of depression. The stream bank of the stream relocation shall be seeded by a method that does not alter the typical cross section of the stream bank. Native Grass Seeding and Mulching shall also be performed in the permanent soil reinforcement mat section of preformed scour holes, and in other areas as directed. The kinds of seed and fertilizer, and the rates of application of seed, fertilizer, and limestone, shall be as stated below. During periods of overlapping dates, the kind of seed to be used shall be determined. All rates are in pounds per acre. August 1 - June 1 18# Creeping Red Fescue 8# Big Bluestem 6# Indiangrass 4# Switchgrass 35# Rye Grain 500# Fertilizer 4000# Limestone May 1— September 1 18# Creeping Red Fescue 8# Big Bluestem 6# Indiangrass 4# Switchgrass 25# German or Browntop Millet 500# Fertilizer 4000# Limestone Fertilizer shall be 10-20-20 analysis. A different analysis of fertilizer may be used provided the 1-2- 2 ratio is maintained and the rate of application adjusted to provide the same amount of plant food as a 10-20-20 analysis and as directed. 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Suite 610, Charlotte, NC 28203 1-38198 • • • NC LIC NO. F-0165 RNV SHEEP NO. 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I CENTERS 2" x 2" (nominal) WOODEN STAKE 24" #4 STEEL REINFORCEMENT BAR I" (nominal) STAPLE 12 11 ANCHOR OPTIONS STREAM BED NOTES: TYPICAL CROSS SECTION I) IN AREAS TO BE MATTED, ALL SEEDING, SOIL AMENDMENTS, AND SOIL PREPARATION MUST BE COMPLETED IN ACCORDANCE WITH THE PROJECT SPECIFICATIONS PRIOR TO PLACEMENT OF COIR FIBER MATTING. 2) REBAR OR STAPLES DAY BE USED IN PLACE OF COIR FIBER MATTING DETAIL WOODEN STAKES AS DIRECTED BY THE ENGINEER. 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A)ICHORS ONE 1 BACKFI.... 7 CENTERS 2" x 2" (nominal) WOODEN STAKE 24" #4 STEEL REINFORCEMENT BAR I" (nominal) STAPLE 12 11 ANCHOR OPTIONS STREAM BED NOTES: TYPICAL CROSS SECTION I) IN AREAS TO BE MATTED, ALL SEEDING, SOIL AMENDMENTS, AND SOIL PREPARATION MUST BE COMPLETED IN ACCORDANCE WITH THE PROJECT SPECIFICATIONS PRIOR TO PLACEMENT OF COIR FIBER MATTING. 2) REBAR OR STAPLES MAY BE USED IN PLACE OF COIR FIBER MATTING DETAIL WOODEN STAKES AS DIRECTED BY THE ENGINEER. NOT TO SCALE 10 5 0 10 20 PLAN 779 O778 777 776 775 774 i —25 —15 —5 (0) 5 15 25 CROSS SECTION A -A 1":2' VERT 1":10' HORIZ (22x34) 71 1":4' VERT 1':20' HORIZ (11W) *SITE GRADING APPROVED BY NCDEQ REPRESENTATIVE DURING FIELD OBSERVATION