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HomeMy WebLinkAboutAgenda 08_MS-21-04_1195 Shelburne Rd_Larkin Realty_stream alt#MS-21-04 Staff Comments 1 CITY OF SOUTH BURLINGTON DEVELOPMENT REVIEW BOARD MS-21-04_1195 Shelburne Rd_Allenwood Inn_stream alt_2021-09-08.docx DEPARTMENT OF PLANNING & ZONING Report preparation date: September 1, 2021 Plans received: August 9, 2021 1195 Shelburne Road Miscellaneous Application #MS-21-04 Meeting date: September 8, 2021 Owner Allenwood Inn, LLC 5 Holmes Road South Burlington, VT Applicant Larkin Realty 410 Shelburne Road Burlington, VT 05401 Property Information Tax Parcel 1540-01195 Residential 1 - Lakeshore Zoning District 95.34 ac Engineer Civil Engineering Associates, Inc. 10 Mansfield View Ln South Burlington, VT 05403 Location Map #MS-18-04 Staff Comments 2 PROJECT DESCRPTION Miscellaneous permit application #MS-21-04 of Larkin Realty for stream alteration and stormwater drainage modifications, 1195 Shelburne Road. CONTEXT The project is located west of Shelburne Road and consists of rerouting an existing unnamed stream. The applicant has stated that the purpose is to relocate the flows downstream of an existing eroded area. The property consists of residential use. The project is subject to the Land Development Regulations pertaining to 12.01C surface water buffers, 12.01G watercourse alteration and relocation, and 12.02 wetland protection. As illustrated in the above aerial image, the stream begins east of the railroad and east of Fayette Road, passes under Fayette Road in a culvert, runs through the wetland adjacent to Olde Orchard Park, is culverted across the railroad, and then is discharged into a Class II wetland on the subject property before flowing to Lake Champlain. The applicant’s proposal is to extend the culvert downstream of the railroad for an additional 350 feet, widen the stream channel at the new discharge, and place boulders in the stream channel downstream of the new discharge. The extended culvert would largely bypass the Class II wetland, though the applicant is proposing a 4-inch low flow outlet which would continue to discharge to the wetland. No information about flows in either the large 36-inch culvert or the 4-inch low flow outlet has been provided. Staff estimates, based on available contour and stream data, that the watershed area of the railroad culvert is approximately 200 acres. PERMIT HISTORY It appears the most recently approved permit for this property was to install erosion control measures (SD-07-13) though it is difficult to be sure because of multiple properties sharing the same address on Shelburne Road. COMMENTS Planning Director Paul Conner and Development Review Planner Marla Keene (“Staff”) have reviewed the plans submitted on 8/9/2021 and offer the following comments. Numbered items for the Board’s attention are in red. Generally speaking, Staff considers there are a number of potential issues with the proposed stream alteration, many of which are technical in nature. Staff has therefore, three principal comments on this application. 1. Insufficient information is provided to justify the proposed impacts. Staff recommends the Board require the applicant to provide the missing information. 2. Once the missing information is provided, Staff considers the Board may wish to invoke technical review (discussed herein) and defer detailed discussion of many staff comments until the technical #MS-18-04 Staff Comments 3 review is complete. The City Stormwater Section has also reviewed the proposal and supports technical review. 3. Review of the South Burlington Natural Resource Conservation Committee (NRCC) is required. Staff recommends the Board refer the application to the NRCC once the missing information is provided, and include any specific requests in their referral. The NRCC meets the first Wednesday of each month, and materials are due to them a week before their meeting. 12.01 GENERAL STREAM AND SURFACE WATER PROTECTION STANDARDS C. Surface Water Buffer Standards (“Stream Buffers”) (1) Applicability. The requirements of this Section shall apply to all lands described as follows: (a) - (b) N/A (c) All land within fifty (50) feet horizontal distance of the centerline of any minor stream (d) - (e) N/A Both the upstream and downstream ends of the proposed culvert are by definition within 50-ft of the centerline of the stream, since the culvert conveys the stream itself, therefore these standards apply. (2) General standards. It is the objective of these standards to promote the establishment of heavily vegetated areas of native vegetation and trees in order to reduce the impact of stormwater runoff, reduce sedimentation, and increase infiltration and base flows in the City’s streams and Lake Champlain. Therefore, except as specifically permitted by the DRB pursuant to the standards in Section 12.01(C)(3), (C)(4), (D) and/or (E) below, all lands within a required stream buffer defined above shall be left in an undisturbed, naturally vegetated condition. Supplemental planting and landscaping with appropriate species of vegetation to achieve these objectives shall be permitted. The specific standards for the vegetation and maintenance of stream buffers are as follows: (a) The clearing of trees that are not dead, heavily damaged by ice storms or other natural events, or diseased, and the clearing of any other vegetation other than invasive species, is permitted only in conjunction with DRB approval pursuant to (3) or (4) below. This area is currently maintained as lawn, therefore tree clearing is not an issue. (b) Any areas within a required stream buffer that are not vegetated or that are disturbed during construction shall be seeded with a naturalized mix of grasses rather than standard lawn grass, and shall not be mowed. 4. No information is provided about the seeding to be used in disturbed areas. Staff recommends the Board direct the applicant to modify their plan to include a specification for naturalized grass and indicate areas not to be mowed. In the context of the other issues with the proposal, Staff recommends the Board require this prior to closing the hearing. (c) The creation of new lawn areas within stream buffers is not permitted after the effective date of these regulations. Staff considers this criterion not applicable. (d) N/A – pertains to snow storage (e) The placing or storing of cut or cleared trees and other vegetation within the stream buffer is prohibited. #MS-18-04 Staff Comments 4 Staff considers this criterion applies but no action is needed. (3) Expansion of pre-existing structures within stream buffers. The expansion of pre-existing structures within stream buffers, except as provided in Section D below, shall be permitted only in accordance with the standards for non-complying structures in Article 3, Section 3.11 of these Regulations. Staff considers that the Board may interpret the headwall as a necessary part of the stream conveyance system and therefore modification of the headwall is not subject to Section 3.11 Non-Conformities. (4) New uses and encroachments within stream buffers. The encroachment of new land development activities into the City’s stream buffers is discouraged. The DRB may authorize the following as conditional uses within stream buffers, subject to the standards and conditions enumerated for each use. The DRB may grant approvals pursuant to this section as part of PUD review without a separate conditional use review. Staff considers the placement of boulder and widening of the stream channel to consist of a new encroachment within the stream buffer, therefore this criterion applies. (a) N/A (b) Clearing of vegetation and filling or excavating of earth materials, only to the extent directly necessitated for the construction or safe operation of a permitted or conditional use on the same property and where the DRB finds that: (i) There is no practicable alternative to the clearing, filling or excavating within the stream buffer; and (ii) The purposes of this Section will be protected through erosion controls, plantings, protection of existing vegetation, and/or other measures. 5. Staff considers that of all the allowable encroachments, this (b) is the most potentially applicable, and recommends the Board require the applicant to demonstrate why their proposed encroachment is necessary for the safe operation of a permitted use, demonstrate that there is no practicable alternative, and that the encroachment will result in greater protection of the stream buffer. Staff notes that streams naturally meander and channelization of a stream is generally considered to be a poor environmental practice. (c) Encroachments necessary to rectify a natural catastrophe for the protection of the public health, safety and welfare. (d) Encroachments necessary for providing for or improving public facilities. Staff considers encroachments (c) and (d) to be not applicable but has retained them for context. (e) N/A (f) Stormwater treatment facilities meeting the Vermont Agency of Natural Resources stormwater treatment standards, and routine maintenance thereof, including necessary clearing of vegetation and dredging. Evidence of a complete application to the VANR for coverage under the applicable permitting requirements shall be required to meet this criterion for encroachment into a stream buffer. No treatment is proposed therefore this encroachment is not applicable. #MS-18-04 Staff Comments 5 (g) – (k) N/A G. Watercourse Alteration and Relocation. The applicant provided responses to each of these criteria, shown in blue. Staff notes follow the applicant’s response. (1) The alteration or relocation of a watercourse is permitted subject to the approval of the Development Review Board provided the alteration or relocation: (a) Is needed to accomplish a clear public purpose or objective; Applicant response: The purpose of this project is to mitigate the existing erosion issues caused by an increase in impervious area and stormwater runoff from the lot at 1185 Shelburne Road. Staff comment: While staff supports erosion prevention, Staff questions whether bypassing a stream segment and limiting the ability of the watercourse to meander is the appropriate method for reducing erosion. Further, Staff considers there is no public impact of the existing erosion or the proposed impacts. Staff considers no Board action is necessary on this criterion; it is addressed through other topics discussed herein. (b) Will not reduce the ability of the watercourse to carry or store flood waters adequately; Applicant response: The project does not propose to reduce the ability of the watercourse to carry or store flood waters. 6. Staff comment: Discussed further below, Staff recommends technical review of this criterion. Staff considers the purpose of this project is to direct water away from the in- stream wetland and therefore the ability of the wetland to carry, and particularly to store, flood waters will be impacted. Staff recommends the Board require the applicant demonstrate this project does not reduce flood storage. (c) Will not have an adverse impact on downstream or upstream water quality; Applicant response: The project proposes to reduce erosion which will improve water quality downstream of this project. This project does not propose to impact water quality upstream. 7. Staff comment: Discussed further below, Staff recommends technical review of this criterion. Staff considers the wetland itself provides sediment removal, therefore without further documentation, it is not known whether bypassing the wetland has an overall reduction in sediment or simply reduces sediment deposition in the short segment where flows are removed. (d) Will not affect adversely the use and enjoyment of adjacent properties; Applicant response: This project will not adversely impact any adjacent properties. Staff comment: Staff considers this criterion met. (e) Will not affect adversely the habitat value of the watercourse or immediately adjacent areas or wetlands. #MS-18-04 Staff Comments 6 Applicant response: This project will not adversely impact any of the existing wetlands as the wetland does not rely on the existing drainage outfall as its source, but on the natural drainage of the watershed around the existing site including the existing 8. Staff comment: Discussed further below, Staff recommends technical review of this criterion. While the wetland may be not impacted, addition of 350-ft of culvert to have a potential impact on existing or future aquatic organism passage. (2) In making findings relative to these criteria, the DRB shall be authorized to invoke technical review by a professional in hydrology or geomorphology, and/or to rely on the issuance of a Stream Alteration Permit issued by the Vermont Department of Environmental Conservation as evidence that the above criteria have been met. 9. Vermont DEC has determined that no Stream Alteration Permit is needed because less than 10 cubic yards of fill or excavation are proposed. The City of South Burlington, however, has no such exemption. (3) The South Burlington Natural Resources Committee shall in a timely manner review and make advisory comments to the DRB on any application made pursuant to this section. This criterion is discussed above. Staff recommends the Board continue the hearing to no sooner than November 2 to accommodate the schedule of the NRCC, which includes an allowance for the NRCC to provide written advisory comments after their October 6 meeting. SECTION 12.02 WETLAND PROTECTION STANDARDS These standards apply to all lands within 50-feet of a wetland. (1) Consistent with the purposes of this Section, encroachment into wetlands and buffer areas is generally discouraged. (2) Encroachment into Class II wetlands is permitted by the City only in conjunction with issuance of a Conditional Use Determination (CUD) by the Vermont Department of Environmental Conservation and positive findings by the DRB pursuant to the criteria in (3) below. (3) Encroachment into Class II wetland buffers, Class III wetlands and Class III wetland buffers, may be permitted by the DRB upon finding that the proposed project’s overall development, erosion control, stormwater treatment system, provisions for stream buffering, and landscaping plan achieve the following standards for wetland protection: Based on the provided plans, it is unclear the amount of proposed wetland and wetland buffer impact. At the upstream end of the proposed culvert extension, the applicant has indicated an area to “remove ex. headwall and in all eroded areas, including the plunge pool, restore stream channel geometry to match the north (minor) leg of the stream confluence 100’ south of the headwall.” No limits of this work are shown, though it does appear to overlap with the Class II buffer. Further, no information is provided as to what it means to “restore stream channel geometry,” including but not limited to proposed surface treatment. At the downstream end of the proposed culvert extension, it appears there are no proposed Class II wetland impacts, but there is a small Class III wetland whose buffer will be impacted, though impacts are not quantified and the required 50-ft buffer is not shown. 10. Staff recommends the Board require the applicant to show the 50-ft wetland buffer and to show and quantify the area of wetland and wetland buffer impacts on the plans. #MS-18-04 Staff Comments 7 (a) The encroachment(s) will not adversely affect the ability of the property to carry or store flood waters adequately; 11. As discussed above, Staff considers the purpose of this project is to direct water away from the wetland and therefore the ability of the wetland to carry, or particularly to store, flood waters will be impacted. Staff recommends the Board require the applicant demonstrate compliance with this criterion. (b) The encroachment(s) will not adversely affect the ability of the proposed stormwater treatment system to reduce sedimentation according to state standards; 12. The removal of flow from the wetland may adversely impact sediment reduction. Staff recommends the Board require the applicant demonstrate compliance with this criterion. (c) The impact of the encroachment(s) on the specific wetland functions and values identified in the field delineation and wetland report is minimized and/or offset by appropriate landscaping, stormwater treatment, stream buffering, and/or other mitigation measures. 13. The wetland report has not been provided therefore it is not possible to evaluate compliance with this criterion. Staff recommends the Board direct the applicant to provide a description of the functions and values of each of the Class II and Class III wetlands and demonstrate how those functions and values are minimized and mitigated. 12.04E(2) Drainage Structures To Accommodate Upstream Development – Culverts or other drainage facilities shall be of sufficient size to accommodate potential runoff from the entire upstream drainage area, whether or not all or part of the upstream area is on the applicant’s lot or the parcel subject to the application. In determining the anticipated amount of upstream runoff for which drainage facilities must be sized, the applicant shall design the stormwater drainage system assuming the total potential development of upstream drainage areas. All drainage structures shall be designed to, at a minimum, safely pass the twenty-five year, twenty-four hour (4.0 inch) rain event. The applicant’s engineer shall provide such information as the Stormwater Superintendent or his designee deems necessary to determine the adequacy of all drainage structures. 14. The applicant has not demonstrated whether the proposed culvert extension can safely pass the 25- year 24-hour rain event. Staff notes a longer, flatter culvert has less capacity than a short, steep culvert. Staff recommends the Board require the applicant to provide a computation showing the culvert meets this criterion. RECOMMENDATION Staff recommends that the Board work with the applicant to address the issues identified herein and continue the hearing to a date that allows the applicant to provide necessary information, for a technical review to be completed, and for the Natural Resources and Conservation Committee to review and provide comment. Respectfully submitted, Marla Keene, Development Review Planner C1.009/14/2016LOCATION MAP1" = 2000'ORTHO PHOTOOVERALL SITEPLANACENOTES1. ORTHO BOUNDARY OF SUBJECT PROPERTY AND ALL CONTIGUOUS LANDSBELONGING TO DAVID M. FARRELL2. THIS PLAN IS NOT A BOUNDARY SURVEY AND IS NOT INTENDED TO BEUSED AS ONE.3. SUBJECT PROPERTY LINE INFORMATION IS BASED ON A PLAT ENTITLED "BOUNDARY SURVEY - "ALLENWOOD PROPERTY" DAVID M. FARRELL TRUST"PREPARED BY CIVIL ENGINEERING ASSOCIATES, INC. DATED FEB. 2, 2008.ADJACENT PROPERTY LINE INFORMATION IS BASED ON TAX MAPINFORMATION.4. THIS PARCEL LIES WITHIN THE RESIDENTIAL 1 - LAKESHORE ZONINGDISTRICT (R1-L)SAVSAVMAB1" = 250'14233PROJECTLOCATION7DAVID M. FARRELLTRUST1195 SHELBURNE ROADSOUTH BURLINGTON VT.5 HOLMES ROADSOUTH BURLINGTON VT.PROJECT LOCATIONZONING REQUIREMENTS:COVERAGECATEGORYBUILDINGSREQUIRED15%EXISTINGSETBACKSREAR YARDZONING DISTRICT: RESIDENTIAL 1 - LAKESHORE (R1-L)0.9%±30' 140'±FRONT YARD50' 455'±MIN. LOT SIZESIDE YARD25' 240'±PROPOSED0.9%±40,000 S.F. 4,649,640± S.F.TOTAL25% 3.5%± 3.5%±4,649,640± S.F.140'±455'±240'±INN LOTDRAINAGEIMPROVEMENTS3?$XWR&$''3URMHFWV???&$'')LOHV?GZJ?6LWH'UDLQDJH,PSURYHPHQWVGZJ30':*7R3')SF WWWWWWSTSTINV.=127.1GABIONRETAINING WALLEXISTING VELCOUTILITY POLESREMOVE EX. HEADWALL AND INALL ERODED AREAS, INCLUDINGTHE PLUNGE POOL, RESTORESTREAM CHANNEL GEOMETRY TOMATCH THE NORTH (MINOR) LEGOF THE STREAM CONFLUENCE100' SOUTH OF THE HEADWALLHOLMES ROADPROPERTIES, INC.FARRELL TRUSTREMAINING LANDVERMONT RAILROADEXISTING 36" CMPAND HEADWALLINV.=114.1'EXISTING 48" CMPW/ F.E.S.INV. IN=107.4'50'WETLAND BUFFER(2016)50'WETLAND BUFFER(2016)EXISTING 12" HDPEINV. IN=112.6'INV. OUT=112.6'EXISTING 48" CMPW/ F.E.S.INV. OUT=106.4'EXISTING STONE ARCHUNDER RAIL ROADWETLAND BOUNDARY(CLASS III)WETLAND BOUNDARY(CLASS III)EXISTING DITCH / TOP OF BANK& LIMITS OF MAINTAINED DITCHWETLAND BOUNDARY(CLASS II)50' WETLAND BUFFERST ST ST 36" HDPE BOTTOM OF BANK = 107.7BOTTOM OF BANK = 108.1130 120 140 118 116 114 112 112 114 116118120 130 114 116 120 116 118 122 124 126 128130132 134 140 LARGE STONEBOULDERSGRADE TO DRAINAABBCCDDS=0.8%±T.V. PEDESTALDNEW 6'Ø DRAINAGE MANHOLERIM= 122.0±INV. IN=115.3± (36" CMP)INV. OUT=115.6± (36" HDPE) (S)INV. OUT = 115.2 (4" HDPE) (SE)4" HDPEWETLAND BOUNDARY(CLASS III)EXISTING DITCH / TOP OF BANK& LIMITS OF MAINTAINED DITCHST BOTTOM OF BANK = 107.7BOTTOM OF BANK = 108.1118 116 114 112 112 116 118 120 130 LARGE STONEBOULDERSGRADE TO DRAINAABBCCDDS=0.8%±T.V. PEDESTAL0+00 0+25 0+50 0+75 1+00112114116118120122124126112114116118120122124126116.44118.460+00 0+25 0+50 0+75 1+00 1+25112114116112114116115.14114.37114.650+00 0+25 0+50 0+75 1+00112114116118120122124112114116118120122124116.17117.6611812011010816EXISTING GRADEPROPOSED PLUNGEPOOL ELEV.=111± - 109±GRADE TO DRAINPROPOSED HEADWALLTOP OF WALL=116.8INV. 36" HPDE=111.7±36" HPDE S=0.014LARGE BOULDERS FORENERGY DISSIPATION106EXISTING ℄ DRAINAGEDITCH BEYOND118120110108106SECTION A110108106INV. 36" HPDE=111.7±PROPOSED HEADWALLT.O.W.=116.8±EXISTING GRADEEXISTING STREAMT.O.W.=116.8±SECTION BEXISTING GRADE110108110108106106110108106SECTION C1"=10'1"=10'1"=10'PROPOSED PLUNGEPOOL ELEV.=110±GRADE TO DRAINTYPE II STONE INFILLTYPE II STONE INFILL210+00 0+25 0+50 0+75 1+00112114116118120112114116118120117.33112.00110110108108106106EXISTING GRADET.O.W.=116±T.O.W.=114±SECTION D1"=10'BOULDER WALL21Q2 WATER LEVELQ2 WATER LEVELQ2 WATER LEVELQ2 WATER LEVELC1.109/14/2016LOCATION MAP1" = 2000'EXISTINGCONDITIONS SITEPLAN - DRAINAGEIMPROVEMENTSACE08/02/19 DSM REVISE SECTIONSNOTES1. UTILITIES SHOWN DO NOT PURPORT TO CONSTITUTE ORREPRESENT ALL UTILITIES LOCATED UPON OR ADJACENT TO THESURVEYED PREMISES. EXISTING UTILITY LOCATIONS AREAPPROXIMATE ONLY. THE CONTRACTOR SHALL FIELD VERIFY ALLUTILITY CONFLICTS. ALL DISCREPANCIES SHALL BE REPORTED TOTHE ENGINEER. THE CONTRACTOR SHALL CONTACT DIG SAFE(888-344-7233) PRIOR TO ANY CONSTRUCTION.2. SITE INFORMATION IS BASED ON A FIELD SURVEY PERFORMED BYCIVIL ENGINEERING ASSOCIATES, INC FALL OF 2014 ANDORTHOMETRIC PHOTOGRAPHY. CIVIL ENGINEERING ASSOCIATES,INC. SURVEY ORIENTATION IS "GRID NORTH", VERMONTCOORDINATE SYSTEM OF 1983 (HORIZONTAL) AND NAVD88(VERTICAL) ESTABLISHED FROM GPS OBSERVATIONS ON SITE.SAVSAVMAB1" = 50'142337INN LOTDRAINAGEIMPROVEMENTSDAVID M. FARRELLTRUST1195 SHELBURNE ROADSOUTH BURLINGTON VT.5 HOLMES ROADSOUTH BURLINGTON VT.LEGENDNEW BUFFER FOR WETLAND DELINEATED BYOAKLEDGE ENVIRONMENTAL SERVICES, INC.MARCH 2016OLD WETLAND BUFFERNEW WETLANDS DELINEATED BYOAKLEDGE ENVIRONMENTAL SERVICES, INC.MARCH 2016OLD WETLANDSEXISTING DITCH / FLOW LINETOP OF BANK1" = 20'PARTIAL SITE PLAN - PLUNGE POOL1" = 50'OVERALL SITE PLAN11/26/19 DSM REVISED PROPOSED SITE IMPROVEMENTSDPROPOSED STORM MANHOLESTEXISTING STORMSTPROPOSED STORMPROJECTLOCATION3?$XWR&$''3URMHFWV???&$'')LOHV?GZJ?6LWH'UDLQDJH,PSURYHPHQWVGZJ$0':*7R3')SF C2.009/14/2016LOCATION MAP1" = 2000' DETAILSACESAVSAVMABAS SHOWN142337INN LOTDRAINAGEIMPROVEMENTSDAVID M. FARRELLTRUST1195 SHELBURNE ROADSOUTH BURLINGTON VT.5 HOLMES ROADSOUTH BURLINGTON VT.N.T.S.PLUNGE POOLNEW 36" HDPE PIPETYPE IISTONE FILLLARGEBOULDERSFOR ENERGYDISSIPATIONEXISTINGSTREAMNEW HEADWALLNOTES:N.T.S.TYPICAL STORM TRENCHREVISED 12/08/2016ST-003D+2'ST-003 Storm TrenchPAVED6"6"COVER PER PLANAPPROVED BACKFILLTHOROUGHLY COMPACTEDIN 8" LIFTSSTORM LINE, SEE PLANFOR TYPE AND SIZEPIPE BEDDINGUNDISTURBED SOILOR ROCKTOPSOIL, RAKE,SEED & MULCHUNPAVED1. COMPACTION OF BACKFILL AND BEDDING SHALL BE AMINIMUM OF 90% (95% UNDER ROADWAY SURFACES) OFMAXIMUM DRY DENSITY DETERMINED IN THE STANDARDPROCTOR TEST (ASTM D698).2. BEDDING MATERIAL SHALL NOT BE PLACED ON FROZENSUBGRADE.3. APPROVED BACKFILL SHALL NOT CONTAIN ANY STONES MORETHAN 12" IN LARGEST DIMENSION (6" IN ROADWAYS, 1 1/2""MAXIMUM DIAMETER WITHIN 24" OF THE OUTSIDE OF THEPIPE), OR CONTAIN ANY FROZEN, WET, OR ORGANIC MATERIAL.4. TRENCHES SHALL BE COMPLETELY DEWATERED PRIOR TOPLACING OF PIPE BEDDING MATERIAL AND KEPTDEWATERED DURING INSTALLATION OF PIPE AND BACKFILL.5. IN TRENCHES WITH UNSTABLE MATERIALS OR HIGH WATERTABLE, TRENCH BOTTOM SHALL FIRST BE STABILIZED BYPLACEMENT OF FILTER FABRIC THEN CRUSHED STONE (3/4"MAXIMUM).6. THE SIDES OF TRENCHES 4' OR MORE IN DEPTH ENTERED BYPERSONNEL SHALL BE SHEETED OR SLOPED TO THE ANGLE OFREPOSE AS DEFINED BY O.S.H.A. STANDARDS.7. BEDDING MATERIAL SHALL CONSIST OF CRUSHED STONE,GRAVEL, OR SAND WITH A MAXIMUM SIZE OF 34". SUBMIT ASAMPLE TO THE ENGINEER FOR APPROVAL.DLARGE STONEBOULDERRETAINING WALL6"12"MAX.24"x24"6'ØADJUST TO GRADE w/CONCRETE RISERSSET FRAME ON FULLMORTAR BEDLEBARON LK120 (LK120A FOR DESIGN GRADES >5%)C.I. GRATE w/ 3 FLANGED FRAME (OR APPROVEDEQUAL). RIM TO BE SET 1" BELOW NORMAL CROSSSECTION ELEV.)N.T.S.TYPICAL CATCH BASINPRECAST MANHOLE STRUCTURESSHALL CONFORM TO ASTM SPEC.C478 (LATEST EDITION)EXISTING 36" CMPINV=115.36" MIN. CRUSHED GRAVELSEAL w/ HYDRAULIC CEMENTMORTAR, OR CAST-IN-PLACEFLEXIBLE M.H. SLEEVESPRECAST CONCRETE w/MONOLITHIC BASEWATERTIGHT JOINT USING1" MIN. WIDTH FLEXIBLEGASKET (SEAL EXTERIORJOINTS AND LIFT HOLES)NEW 36" HDPEINV.=115.63000 PSI CONCRETE FILLET36" HDPEEXISTING36" CMP3000 PSI CONCRETE FILLET2'PLANMANHOLE WALLMANHOLE OPENINGABOVETOP OF BANKINV.=115.6EXISTING 36" CMP(REMOVED)CONCRETE BACKFILL4" PVC WITHTRASH RACKINV.=115.2INV.=115.3NEW 4" SDR 35 PVCINV=115.211/26/19 DSM REVISED PROPOSED SITE IMPROVEMENTSPROJECTLOCATION06/28/21 DSM RECONCILED DETAILS3?$XWR&$''3URMHFWV???&$'')LOHV?GZJ?6LWH'UDLQDJH,PSURYHPHQWVGZJ30':*7R3')SF WWWWWWSTST50'WETLAND BUFFER(2016)50'WETLAND BUFFER(2016)WETLAND BOUNDARY(CLASS III)WETLAND BOUNDARY(CLASS III)EXISTING DITCH / TOP OF BANK& LIMITS OF MAINTAINED DITCHWETLAND BOUNDARY(CLASS II)50' WETLAND BUFFERST ST ST 130 120 140 118 116 114 112 112 114 116118120 130 114 116 120 116 118 122 124 126 128130132 134 140 DTEMPORARY PROTECTIONINSTALL SILT FENCEINSTALL 4" TOPSOILSEED AND HAYMULCHOR EROSION CONTROLMATTING ON ALLSLOPES > 3:1 (TYP.)30'±C1.209/14/2016LOCATION MAP1" = 2000'ESPC SITE PLANACESAVSAVMAB1" = 50'142337INN LOTDRAINAGEIMPROVEMENTSDAVID M. FARRELLTRUST1195 SHELBURNE ROADSOUTH BURLINGTON VT.5 HOLMES ROADSOUTH BURLINGTON VT.PROJECTLOCATIONEROSION CONTROL NOTES1. SILT FENCE TO BE INSTALLED WHERE SHOWN PRIORTO SOIL DISTURBANCE IN UPHILL AREAS.2. EROSION CONTROL MEASURES SHOWN ON PLANSARE CONCEPTUAL. ADDITIONAL MEASURES MAY BENECESSARY BASED ON SITE/WEATHER CONDITIONSDURING CONSTRUCTION.3. ALL AREAS OF DISTURBANCE MUST HAVE TEMPORARYOR PERMANENT STABILIZATION WITHIN 7 DAYS OFINITIAL DISTURBANCE.4. MAXIMUM ALLOWABLE CONCURRENT EARTHDISTURBANCE AREA = 5.0 ACRES.EROSION CONTROL LEGENDSILT FENCECONSTRUCTION LIMITS TAPEEROSION CONTROL MATTING3?$XWR&$''3URMHFWV???&$'')LOHV?GZJ?6LWH'UDLQDJH,PSURYHPHQWVGZJ30':*7R3')SF C2.109/14/2016LOCATION MAP1" = 2000' ESPC DETAILSACESAVSAVMABAS SHOWN142337INN LOTDRAINAGEIMPROVEMENTSDAVID M. FARRELLTRUST1195 SHELBURNE ROADSOUTH BURLINGTON VT.5 HOLMES ROADSOUTH BURLINGTON VT.PROJECTLOCATIONE-001 EC SheetIntroductionThis project is subject to the terms and conditions of the authorizationfrom the State of Vermont to discharge construction related storm waterrunoff.Coverage under the State Construction General Permit 3-9020 isrequired for any construction activity that disturbs 1 or more acres ofland, or is part of a larger development plan that will disturb 1 or moreacres.This project has been deemed to qualify as a Low Risk Site which issubject to the erosion prevention and sediment control (EPSC)standards set for in the State of Vermont'sLow Risk Site Handbook for Erosion Prevention and SedimentControlThe following narrative and implementation requirements represent theminimum standard for which this site is required to be maintained asregulated by the State of Vermont.Any best management practices (BMP's) depicted on the project's EPSCSite plan which go beyond the Handbook requirements are consideredto be integral to the management of the site and represent componentsof the municipal EPSC approval for the project which shall beimplemented.The EPSC plan depicts one snap shot in time of the site. Allconstruction sites are fluid in their day to day exposures and risks as itrelates to minimizing sediment loss from the site. It is theresponsibility of the Contractor to implement the necessary BMP'sto comply with the Low Risk Handbook standards outlined on thissheet based on the interim site disturbance conditions which may ormay not be shown on the EPSC Site Plan.Specific BMP's which are critical to allowing the project to be considereda Low risk site include the items checked below:xLimit the amount of disturbed earth to two acres or less at any onetime.xThere shall be a maximum of 7 consecutive days of disturbed earthexposure in any location before temporary or final stabilization isimplemented.1. Mark Site BoundariesPurpose:Mark the site boundaries to identify the limits of construction. Delineatingyour site will help to limit the area of disturbance, preserve existingvegetation and limit erosion potential on the site.How to comply:Before beginning construction, walk the site boundaries and flag trees,post signs, or install orange safety fence. Fence is required on anyboundary within 50 feet of a stream, lake, pond or wetland, unless thearea is already developed (existing roads, buildings, etc.)2. Limit Disturbance AreaPurpose:Limit the amount of soil exposed at one time to reduce the potentialerosion on site.Requirements:The permitted disturbance area is specified on the site's writtenauthorization to discharge. Only the acreage listed on the authorizationform may be exposed at any given time.How to comply:Plan ahead and phase the construction activities to ensure that no morethan the permitted acreage is disturbed at one time. Be sure to properlystabilize exposed soil with seed and mulch or erosion control mattingbefore beginning work in a new section of the site.3. Stabilize Construction EntrancePurpose:A stabilized construction entrance helps remove mud from vehiclewheels to prevent tracking onto streets.Requirements:If there will be any vehicle traffic off of the construction site, you mustinstall a stabilized construction entrance before construction begins.How to installRock Size: Use a mix of 1 to 4 inch stoneDepth: 8 inches minimumWidth: 12 feet minimumLength: 40 feet minimum (or length of driveway, if shorter)Geotextile: Place filter cloth under entire gravel bedMaintenance:Redress with clean stone as required to keep sediment from trackingonto the street.4. Install Silt FencePurpose:Silt fences intercept runoff and allow suspended sediment to settle out.Requirements:Silt fence must be installed:xon the downhill side of the construction activitiesxbetween any ditch, swale, storm sewer inlet, or waters of the Stateand the disturbed soil* Hay bales must not be used as sediment barriers due to theirtendency to degrade and fall apart.Where to place:xPlace silt fence on the downhill edge of bare soil. At the bottom ofslopes, place fence 10 feet downhill from the end of the slope (ifspace is available).xEnsure the silt fence catches all runoff from bare soil.xMaximum drainage area is ¼ acre for 100 feet of silt fence.xInstall silt fence across the slope (not up and down hills!)xInstall multiple rows of silt fence on long hills to break up flow.xDo not install silt fence across ditches, channels, or streams or instream buffers.How to install silt fence:xDig a trench 6 inches deep across the slopexUnroll silt fence along the trenchxEnsure stakes are on the downhill side of the fencexJoin fencing by rolling the end stakes togetherxDrive stakes in against downhill side of trenchxDrive stakes until 16 inches of fabric is in trenchxPush fabric into trench; spread along bottomxFill trench with soil and pack downMaintenance:xRemove accumulated sediment before it is halfway up the fence.xEnsure that silt fence is trenched in ground and there are no gaps.5. Divert Upland RunoffPurpose:Diversion berms intercept runoff from above the construction site anddirect it around the disturbed area. This prevents clean water frombecoming muddied with soil from the construction site.Requirements:If storm water runs onto your site from upslope areas and your sitemeets the following two conditions, you must install a diversion bermbefore disturbing any soil.1. You plan to have one or more acres of soil exposed at any one time(excluding roads).2. Average slope of the disturbed area is 20% or steeper.How to install:1. Compact the berm with a shovel or earth-moving equipment.2. Seed and mulch berm or cover with erosion control mattingimmediately after installation.3. Stabilize the flow channel with seed and straw mulch or erosioncontrol matting. Line the channel with 4 inch stone if the channelslope is greater than 20%.4.Ensure the berm drains to an outlet stabilized with riprap. Ensure thatthere is no erosion at the outlet.5. The diversion berm shall remain in place until the disturbed areas arecompletely stabilized.6. Slow Down Channelized RunoffPurpose:Stone check dams reduce erosion in drainage channels by slowingdown the storm water flow.Requirements:If there is a concentrated flow (e.g. in a ditch or channel) of storm wateron your site, then you must install stone check dams. Hay bales mustnot be used as check dams.How to install:Height: No greater than 2 feet. Center of dam should be 9 inches lowerthan the side elevationSide slopes: 2:1 or flatterStone size: Use a mixture of 2 to 9 inch stoneWidth: Dams should span the width of the channel and extend up thesides of the banksSpacing: Space the dams so that the bottom (toe) of the upstream damis at the elevation of the top (crest) of the downstream dam. Thisspacing is equal to the height of the check dam divided by the channelslope.Spacing (in feet) = Height of check dam (in feet)/Slope in channel (ft/ft)Maintenance:Remove sediment accumulated behind the dam as needed to allowchannel to drain through the stone check dam and prevent large flowsfrom carrying sediment over the dam. If significant erosion occursbetween check dams, a liner of stone should be installed.7. Construct Permanent ControlsPurpose:Permanent storm water treatment practices are constructed to maintainwater quality, ensure groundwater flows, and prevent downstreamflooding. Practices include detention ponds and wetlands, infiltrationbasins, and storm water filters.Requirements:If the total impervious* area on your site, or within the common plan ofdevelopment, will be 1 or more acres, you must apply for a State Stormwater Discharge Permit and construct permanent storm water treatmentpractices on your site. These practices must be installed before theconstruction of any impervious surfaces.How to comply:Contact the Vermont Storm water Program and follow the requirementsin the Vermont Storm water Management Manual. The Storm waterManagement Manual is available at:www.vtwaterquality.org/stormwater.htm*An impervious surface is a manmade surface, including, butnot limited to, paved and unpaved roads, parking areas, roofs,driveways, and walkways, from which precipitation runs off ratherthan infiltrates.8. Stabilize Exposed SoilPurpose:Seeding and mulching, applying erosion control matting, andhydroseeding are all methods to stabilize exposed soil. Mulches andmatting protect the soil surface while grass is establishing.Requirements:All areas of disturbance must have temporary or permanent stabilizationwithin 7, 14, or 21 days of initial disturbance, as stated in the projectauthorization. After this time, any disturbance in the area must bestabilized at the end of each work day.The following exceptions apply:xStabilization is not required if earthwork is to continue in the areawithin the next 24 hours and there is no precipitation forecast forthe next 24 hours.xStabilization is not required if the work is occurring in aself-contained excavation (i.e. no outlet) with a depth of 2 feet orgreater (e.g. house foundation excavation, utility trenches).All areas of disturbance must have permanent stabilization within 48hours of reaching final grade.How to comply:Prepare bare soil for seeding by grading the top 3 to 6 inches of soil andremoving any large rocks or debris.Seeding Rates for Temporary StabilizationApril 15 - Sept. 15 --- Ryegrass (annual or perennial: 20 lbs/acre)Sept. 15 - April 15 --- Winter rye: 120 lbs/acreSeeding Rates for Final Stabilization:ChooseMulching RatesApril 15 - Sept.15 -- Hay or Straw: 1 inch deep (1-2 bales/1000 s.f.)Sept.15 - April 15 -- Hay or Straw: 2 in. deep (2-4 bales/1000 s.f.)Erosion Control MattingAs per manufacturer's instructionsHydroseedAs per manufacturer's instructions9. Winter StabilizationPurpose:Managing construction sites to minimize erosion and prevent sedimentloading of waters is a year-round challenge. In Vermont, this challengebecomes even greater during the late fall, winter, and early springmonths.'Winter construction' as discussed here, describes the period betweenOctober 15 and April 15, when erosion prevention and sediment controlis significantly more difficult.Rains in late fall, thaws throughout the winter, and spring melt and rainscan produce significant flows over frozen and saturated ground, greatlyincreasing the potential for erosion.Requirements for Winter Shutdown:For those projects that will complete earth disturbance activities prior tothe winter period (October 15), the following requirements must beadhered to:1. For areas to be stabilized by vegetation, seeding shall be completedno later than September 15 to ensure adequate growth and cover.2. If seeding is not completed by September 15, additionalnon-vegetative protection must be used to stabilize the site for thewinter period. This includes use of Erosion Control Matting or nettingof a heavy mulch layer. Seeding with winter rye is recommended toallow for early germination during wet spring conditions.3. Where mulch is specified, apply roughly 2 inches with an 80-90%cover. Mulch should be tracked in or stabilized with netting in openareas vulnerable to wind.Requirements for Winter ConstructionIf construction activities involving earth disturbance continue pastOctober 15 or begin before April 15, the following requirements must beadhered to:1. Enlarged access points, stabilized to provide for snow stockpiling.2. Limits of disturbance moved or replaced to reflect boundary of winterwork.3. A snow management plan prepared with adequate storage andcontrol of meltwater, requiring cleared snow to be stored down slopeof all areas of disturbance and out of storm water treatment structures.4. A minimum 25 foot buffer shall be maintained from perimeter controlssuch as silt fence.5. In areas of disturbance that drain to a water body within 100 feet, tworows of silt fence must be installed along the contour.6. Drainage structures must be kept open and free of snow and icedams.7. Silt fence and other practices requiring earth disturbance must beinstalled ahead of frozen ground.8. Mulch used for temporary stabilization must be applied at double thestandard rate, or a minimum of 3 inches with an 80-90% cover.9. To ensure cover of disturbed soil in advance of a melt event, areas ofdisturbed soil must be stabilized at the end of each work day, with thefollowing exceptions:x If no precipitation within 24 hours is forecast and work will resumein the same disturbed area within 24 hours, daily stabilization is notnecessary.x Disturbed areas that collect and retain runoff, such as housefoundations or open utility trenches.10. Prior to stabilization, snow or ice must be removed to less than 1inch thickness.11. Use stone to stabilize areas such as the perimeter of buildingsunder construction or where construction vehicle traffic is anticipated.Stone paths should be 10 to 20 feet wide to accommodate vehiculartraffic.10. Stabilize Soil at Final GradePurpose:Stabilizing the site with seed and mulch or erosion control matting whenit reaches final grade is the best way to prevent erosion whileconstruction continues.Requirements:Within 48 hours of final grading, the exposed soil must be seeded andmulched or covered with erosion control matting.How to comply:Bring the site or sections of the site to final grade as soon as possibleafter construction is completed. This will reduce the need for additionalsediment and erosion control measures and will reduce the totaldisturbed area.For seeding and mulching rates, follow the specifications under Rule 8,Stabilizing Exposed Soil.11. Dewatering ActivitiesPurpose:Treat water pumped from dewatering activities so that it is clear whenleaving the construction site.Requirements:Water from dewatering activities that flows off of the construction sitemust be clear. Water must not be pumped into storm sewers, lakes, orwetlands unless the water is clear.How to comply:Using sock filters or sediment filter bags on dewatering discharge hosesor pipes, discharge water into silt fence enclosures installed in vegetatedareas away from waterways. Remove accumulated sediment after thewater has dispersed and stabilize the area with seed and mulch.12. Inspect Your SitePurpose:Perform site inspections to ensure that all sediment and erosion controlpractices are functioning properly. Regular inspections and maintenanceof practices will help to reduce costs and protect water quality.Requirements:Inspect the site at least once every 7 days and after every rainfall orsnow melt that results in a discharge from the site. Perform maintenanceto ensure that practices are functioning according to the specificationsoutlined in this handbook.In the event of a noticeable sediment discharge from the constructionsite, you must take immediate action to inspect and maintain existingerosion prevention and sediment control practices. Any visiblydiscolored storm water runoff to waters of the State must be reported.Forms for reporting discharges are available at:www.vtwaterquality.org/stormwater.htmN.T.S.CONSTRUCTION FENCE DETAILREVISED 08/01/2014E-002E-002 Constr FenceWOOD POST30"18"EXISTING GRADENATIVE MATERIALPLASTIC ORANGECONSTRUCTION FENCEREVISED 08/01/2014E-004E-004 Constr. Ent20' (6m) RROADWAYAASTABILIZED CONSTRUCTION ENTRANCEN.T.S.12'. MIN.50' MIN.SECTION A-ADIVERSION RIDGE REQUIREDWHERE GRADE EXCEEDS 2%ROADWAY2% OR GREATERSPILLWAYFILTER FABRICSANDBAGS ORCONTINUOUS BERM OFEQUIVALENT HEIGHTDIVERSION RIDGESUPPLY WATER TO WASHWHEELS IF NECESSARY2"-3" (50-75mm) COURSEAGGREGATE MIN. 8"(150mm) THICKPLAN VIEWNOTES:1. THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION THAT WILL PREVENTTRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC RIGHT-OF-WAYS. THIS MAYREQUIRE TOP DRESSING, REPAIR AND/OR CLEAN OUT OF ANY MEASURES USED TOTRAP SEDIMENT.2. WHEN NECESSARY, WHEELS SHALL BE CLEANED PRIOR TO ENTRANCE ONTO PUBLICRIGHT-OF-WAY.3. WHEN WASHING IS REQUIRED, IT SHALL BE DONE ON AN AREA STABILIZED WITHCRUSHED STONE THAT DRAINS INTO AN APPROVED SEDIMENT TRAP OR SEDIMENTBASIN.NOTE:USE SANDBAGS OR OTHERAPPROVED METHODS TOCHANNELIZE RUNOFF TOBASIN AS REQUIREDREVISED 08/01/2014E-003E-003 Silt FenceN.T.S.SILT FENCE DETAILNOTES:1. INSTALL MIRAFI ENVIROFENCE, OR APPROVED EQUAL OR AS DETAILED HEREIN.2. INSTALL SILT FENCES AT TOES OF ALL UNPROTECTED SLOPES AND AS PARALLEL TOCONTOURS AS POSSIBLE. THIS INCLUDES ALL FILLED OR UNPROTECTED SLOPESCREATED DURING CONSTRUCTION, NOT NECESSARILY REFLECTED ON THE FINALPLANS. CURVE THE ENDS OF THE FENCE UP INTO THE SLOPE. REMOVE SEDIMENTWHEN ACCUMULATED TO HALF THE HEIGHT OF THE FENCE. SILT FENCES ARE TO BEMAINTAINED UNTIL SLOPES ARE STABILIZED.3. WHEN TWO SECTIONS OF FILTER CLOTH ADJOIN EACH OTHER, THEY SHALL BEOVERLAPPED BY 6", FOLDED AND STAPLED.10'10'2.5'METAL POST4 x 4 WOODPOST SPACING212 X 212 WOOD36" MIN.12" MIN.POST2"8"FILTER FABRIC TO BEMIRAFI 100X OR APPROVEDEQUALFILTER FABRIC TO BECLIPPED, BACKFILLED ANDTAMPED 8" BELOW GRADESTEEL OR WOOD STAKES(SEE CHART AT RIGHT)REVISED 08/01/2014E-005E-005 StockpileTEMPORARY STOCKPILE DETAILN.T.S.TEMPORARY SEEDING & MULCHOR NETTINGSILT FENCE OR HAYBALES INSTALLED ONDOWN GRADIENT SIDEREVISED 08/01/2014E-007E-007 Infilt SectSILT FENCE CONSTRUCTION DETAILN.T.S.2. ATTACH SILT FENCEAND EXTEND IT TOTHE TRENCH.3. STAPLE THE SILTFENCING TO THEEND POSTS.BACKFILL TRENCH.1. SET POSTS AND EXCAVATE A 4"X8" TRENCH, SET POST DOWNSLOPE.ANGLE 10°UPSLOPE FORSTABILITY ANDSELF CLEANINGPOSTSSILTFENCE100°12"MIN.8"COMPACTEDBACKFILL3?$XWR&$''3URMHFWV???&$'')LOHV?GZJ?6LWH'UDLQDJH,PSURYHPHQWVGZJ30':*7R3')SF Land Development Regulations South Burlington, Vermont Adopted May 12, 2003 Amendments Adopted December 7, 2020 Amendments Effective December 28, 2020 ARTICLE 12 12 SURFACE WATER PROTECTION STANDARDS 12.01 General Stream and Surface Water Protection Standards D. Erosion control measures and water-oriented development along Lake Champlain. The installation of erosion control measures and water-oriented development within or abutting the high-water elevation of Lake Champlain, may be approved by the DRB as a conditional use provided the following standards are met: (a) The improvement involves, to the greatest extent possible, the use of natural materials such as wood and stone. This project intends to use a type II stone base for the plunge pool, large boulders for energy dissipation and as a wall to hold back grade so there is minimal disturbance within the top of banks of the perennial stream. (b) The improvement will not increase the potential for erosion. The intent of this project is to mitigate the existing erosion by relocating the stormwater outfall through a new stormwater line dissipating the energy across a plunge pool made of stone fill and large boulders and allowing the stormwater to reenter the existing stream. (c) The improvement will not have an undue adverse impact on the aesthetic integrity of the lakeshore. In making a determination pursuant to this criterion, the DRB may request renderings or other additional information relevant and necessary to evaluating the visual impact of the proposed improvement. This will have no undue adverse impact on the aesthetic integrity of the lakeshore, and will reduce sediment and further erosion of the existing area from being washed downstream and into the lake. (d) A landscaping plan showing plans to preserve, maintain and supplement existing trees and ground cover vegetation is submitted and the DRB finds that the overall plan will provide a visual and vegetative buffer for the lake and/or stream. This project does not propose to remove any of the existing trees. Existing vegetation that is disturbed during construction will be top soiled, seeded, and mulched at the competition to reestablish ground cover over the stormwater line. G. Watercourse Alteration and Relocation. (1) The alteration or relocation of a watercourse is permitted subject to the approval of the Development Review Board provided the alteration or relocation: (a) Is needed to accomplish a clear public purpose or objective; The purpose of this project is to mitigate the existing erosion issues caused by an increase in impervious area and stormwater runoff from the lot at 1185 Shelburne Road. (b) Will not reduce the ability of the watercourse to carry or store flood waters adequately; This project does not propose to reduce the ability of the watercourse to carry or store flood waters. (c) Will not have an adverse impact on downstream or upstream water quality; This project proposes to reduce erosion which will improve water quality downstream of the project. This does not propose to impact water quality upstream. (d) Will not affect adversely the use and enjoyment of adjacent properties; This project will not adversely impact any adjacent properties. (e) Will not affect adversely the habitat value of the watercourse or immediately adjacent areas or wetlands. This project will not adversely impact any of the existing wetlands as the wetland does not rely on the existing drainage outfall as its source, but on the natural drainage of the watershed around the existing site including the existing stream flowing north to south through the wetland that is not proposed to be modified. (2) In making findings relative to these criteria, the DRB shall be authorized to invoke technical review by a professional in hydrology or geomorphology, and/or to rely on the issuance of a Stream Alteration Permit issued by the Vermont Department of Environmental Conservation as evidence that the above criteria have been met. We have consulted with Chris Brunelle, River Management Engineer for the Agency of Natural Resources Department of Environmental Conservation River Management Program for this project, and Chris made the determination that this project does not require a stream alteration permit. Please see the attached correspondence with Chris Brunelle. From: Brunelle, Chris <Chris.Brunelle@vermont.gov> Sent: Wednesday, July 28, 2021 11:07 AM To: broberts@cea-vt.com Cc: David Marshall Subject: RE: Farrell Culvert relocaƟon Hello Robert, I have reviewed the materials you sent to me. I have determined that this project does not require a stream alteraƟon permit because there is less than 10cy of fill or excavaƟon proposed within the top of banks of a perennial stream. Sincerely, Chris Brunelle, River Management Engineer Agency of Natural Resources Department of Environmental Conservation River Management Program 111 West Street Essex Jct, VT 05452 (802) 777-5328 / chris.brunelle@vermont.gov www.dec.vermont.gov To preserve, enhance, restore, and conserve Vermont's natural resources, and protect human health for the benefit of this and future generations. Due to the coronavirus (COVID-19) we are taking addiƟonal safety measures to protect our employees and customers and are now working remotely while focusing on keeping our normal business processes fully funcƟonal. Please communicate with our staff electronically or via phone to the greatest extent possible since our processing of postal mail may be slowed during this period. You may now submit permit applicaƟons, compliance reports and fee payments through our new online form to expedite its receipt and review: hƩps://anronline.vermont.gov/? formtag=WSMD_Intake. Division staff contact informaƟon can be found online here: hƩps://dec.vermont.gov/watershed/contacts. Thank you for your paƟence during this challenging Ɵme. We wish you and your family the best. From: Billy Roberts <broberts@cea-vt.com> Sent: Tuesday, July 20, 2021 1:02 PM To: Brunelle, Chris <Chris.Brunelle@vermont.gov> Cc: David Marshall <dmarshall@cea-vt.com> Subject: RE: Farrell Culvert relocaƟon EXTERNAL SENDER: Do not open aƩachments or click on links unless you recognize and trust the sender. Hi Chris, Sorry to keep dragging you into this, the City does not believe that we do not need a stream alteraƟon permit for this project based on the revisions we made under your guidance. Can you confirm that the work on the aƩached plan does not need a stream alteraƟon permit? Thanks! Billy Roberts Civil Engineering Associates, Inc. 10 Mansfield View Lane So. Burlington, Vermont 05403 802-864-2323 x305 www.cea-vt.com broberts@cea-vt.com From: Billy Roberts <broberts@cea-vt.com> Sent: Friday, October 30, 2020 1:09 PM To: 'Brunelle, Chris' <Chris.Brunelle@vermont.gov> Cc: David Marshall (dmarshall@cea-vt.com) <dmarshall@cea-vt.com> Subject: RE: Farrell Culvert relocaƟon Hi Chris, I was wondering if you could review the aƩached for us. Marla at the City of South Burlington wanted to have you review the minor revisions to the plan prior to approving the permit. If you have any quesƟons, feel free to reach out. Thanks! Billy Roberts Civil Engineering Associates, Inc. 10 Mansfield View Lane So. Burlington, Vermont 05403 802-864-2323 x305 www.cea-vt.com broberts@cea-vt.com From: Billy Roberts <broberts@cea-vt.com> Sent: Tuesday, June 2, 2020 8:48 AM To: 'Brunelle, Chris' <Chris.Brunelle@vermont.gov> Cc: David Marshall (dmarshall@cea-vt.com) <dmarshall@cea-vt.com> Subject: RE: Farrell Culvert relocaƟon Hi Chris, Hope all is well. I am reaching out because we have submiƩed a Miscellaneous Permit applicaƟon to the City of South Burlington for drainage improvements to the Inn Drainage Lot at 1195 Shelburne Road in South Burlington. Since the last correspondence was in July of 2019 and there have been minor revisions since then, they would like us to have you review the most recent plan and confirm if we can sƟll proceed without the need for a stream alteraƟon permit. I have aƩached the most recent plan. If you have any quesƟons, please feel free to reach out. Thanks! Billy Roberts Civil Engineering Associates, Inc. 10 Mansfield View Lane So. Burlington, Vermont 05403 802-864-2323 x305 www.cea-vt.com broberts@cea-vt.com From: Brunelle, Chris <Chris.Brunelle@vermont.gov> Sent: Monday, July 29, 2019 9:52 AM To: David Marshall <dmarshall@cea-vt.com> Subject: Farrell Culvert relocaƟon Dave, No stream alteration permit is required for the relocation because there will be no work within the top of banks of the stream.