HomeMy WebLinkAboutAgenda 06_MS-20-04_105 Swift St_Ninety Nine Swift St_fillCITY OF SOUTH BURLINGTON
DEVELOPMENT REVIEW BOARD
DEPARTMENT OF PLANNING & ZONING
Report preparation date: July 29, 2020
Application received: June 2, 2020
105 Swift Street
Sketch Plan Application #MS‐20‐04
Meeting Date: August 4, 2020
Owner
Ninety Nine Swift Street Associates LLC,
99 Swift Street, Suite 100
South Burlington, Vermont 05403‐7324
Contact Person
David S. Marshall, P.E., Civil Engineering Associates
10 Mansfield View Lane, South Burlington, VT 05403,
Property Information
Tax Parcels 1700‐00099 & 1700‐00105
Swift Street Zoning District
Parcel sizes: 54,160 s.f and 45,255 s.f.
Applicant
Ninety Nine Swift Street Associates LLC,
99 Swift Street, Suite 100
South Burlington, Vermont 05403‐7324
Location Map
PROJECT DESCRIPTION
Miscellaneous application #MS‐20‐04 of Ninety Nine Swift Street Associates, LLC for grading and
placement of fill. The purpose is to preload the soils and establish a building pad in the location of a
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future building, 105 Swift Street.
The applicant describes the proposed project as follows, from their cover letter dated June 2, 2020:
“The applicant and landowner, Ninety Nine Swift Street Associates, LLC, seeks approval for the
temporary placement of approximately 730 cubic yards of fill on this site for the purposes of
preloading and consolidating the compressible soils underneath the footprint of a future
building. The cut material on the east side of the property will be placed to create the 209'
elevation platform. The remaining material will be crushed stone, that will be imported into the
site, which will be re‐used later for the construction of the parking lot. No additional
development is proposed as part of this application.”
PERMIT HISTORY
The subject property was previously occupied by a single family home. The property was acquired by the
owners of 99 Swift Street, and the home removed. The property owners have submitted this
Miscellaneous application to place fill on the site in advance of possible development proposed under
Sketch Plan application #SD‐20‐25, also being reviewed on this August 4th agenda.
COMMENTS
Development Review Planner Marla Keene and Director of Planning and Zoning Paul Conner, hereafter
referred to as Staff, have reviewed the plans submitted by the applicant and offer the following
comments. Numbered items for the Board’s attention are in red.
CONTEXT
The two properties are located in the Swift Street Zoning District. The City‐owned Farrell Park borders the
properties on their southern side, and, in fact, the existing building at 99 Swift Street shares its parking lot
access with the entry to Farrell Park.
The property abuts the Residential‐4 Zoning District immediately to the east, where a single family home
is located at 109 Swift Street. There is a significant change in elevation between the two properties. The
center of 105 Swift Street is at an elevation of ~210’, while the house at 109 Swift Street rests at an
elevation of 232’. Across Swift Street, to the north, is the Eastwoods Natural Area, owned and managed
by the University of Vermont.
3.12 Alteration of Existing Grade
A. Permit Required. The removal from land or the placing on land of fill, gravel, sand, loam, topsoil,
or other similar material in an amount equal to or greater than twenty (20) cubic yards, except when
incidental to or in connection with the construction of a structure on the same lot, shall require the
approval of the Development Review Board. The Development Review Board may grant such approval
where such modification is requested in connection with the approval of a site plan, planned unit
development or subdivision plat. This section does not apply to the removal of earth products in
connection with a resource extraction operation (see Section 13.16, Earth Products.)
B. Standards and Conditions for Approval.
(1) The Development Review Board shall review a request under this Section for compliance
with the standards contained in this sub‐Section 3.12(B). and Section 3.07, Height of Structures of
these regulations. An application under Section 3.12(A) above shall include the submittal of a site
plan, planned unit development or subdivision plat application showing the area to be filled or
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removed, and the existing grade and proposed grade created by removal or addition of material.
The applicant is proposing to add 730 cubic yards of fill in order to create a development platform at an
elevation of 209’.
Staff considers this application to be inappropriate and inapplicable for review as its own project, separate
from the proposal being reviewed under Sketch Plan #SD‐20‐25.
Sections 3.12A and 3.12B specifically state the process for review of a request to alter existing grade that
is associated with a proposed development project: to be reviewed in connection with, or as incidental
to, the Site Plan, Planned Unit Development, or Subdivision Plat.
These same sections do allow for an application for only the placement of fill or other similar activities;
however, this is reserved for circumstances where the placement or removal of fill is the principal and
ultimate action, unrelated to planned future development. The applicant has stated that this is not the
case, and in any event, the establishment of a flat platform cannot be considered anything other than a
pre‐condition for development.
Review and issuance of a decision concerning such a development platform would shortcut the DRB’s
authority and responsibility to evaluate the proposed land development under the Site Plan and Planned
Unit Development standards of these Regulations.
1. Staff recommends the Board invite the applicant to withdraw this application. If the applicant
elects to proceed, Staff recommends that the Board deny Miscellaneous Application #MS‐20‐04 as
the proposed activity is a component of what would be reviewed as a site plan or PUD for
development.
(2) The Development Review Board, in granting approval may impose any conditions it deems
necessary, including, but not limited to, the following:
(a) Duration or phasing of the permit for any length of time.
(b) Submission of an acceptable plan for the rehabilitation of the site at the conclusion of
the operations, including grading, seeding and planting, fencing, drainage, and other
appropriate measures.
(c) Provision of a suitable bond or other security in accordance with Section 15.15 adequate
to assure compliance with the provisions of these Regulations.
(d) Determination of what shall constitute pre‐construction grade under Section 3.07,
Height of Structures.
2. If the applicant elects to proceed, Staff recommends that Board require the applicant to provide a
detailed plan for how to return the site to the full parameters of its pre‐existing conditions in the
event that the associated Planned Unit Development is not approved, is substantially modified by
the Board, or is not constructed within a specified period of time. Any such plan must be
accompanied by a bond or other security measure sufficient to cover the full restoration of the site
in accordance with subsection 2(b).
3. Staff further recommends that in accordance with subsection 2(a), the Board establish a maximum
duration for the development platform’s existence and timeline for removal and restoration in the
event that the proposed development project does not proceed.
4. Finally, Staff recommends that the Board establish the pre‐construction grade as the grade
indicated on Page C.1.0. for this and any subsequent or concurrent development proposals in
accordance with subsection 2(d).
RECOMMENDATION
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As discussed above.
Respectfully submitted,
Paul Conner, AICP
Director of Planning & Zoning
DSMDSMSAL1" = 20'19130C1.0MAY, 2020LOCATION MAP1" = 2000'NINETY NINE SWIFTSTREETASSOCIATES, LLC99 SWIFT STREET SOUTH BURLINGTONVERMONT 05403105 SWIFT STREETEXISTINGCONDITIONS SITEPLANACE105 SWIFT STREETSOUTH BURLINGTON VTNOTES1. UTILITIES SHOWN DO NOT PURPORT TO CONSTITUTE OR REPRESENT ALL UTILITIESLOCATED UPON OR ADJACENT TO THE SURVEYED PREMISES. EXISTING UTILITYLOCATIONS ARE APPROXIMATE ONLY. THE CONTRACTOR SHALL FIELD VERIFY ALLUTILITY CONFLICTS. ALL DISCREPANCIES SHALL BE REPORTED TO THE ENGINEER.THE CONTRACTOR SHALL CONTACT DIG SAFE (888-344-7233) PRIOR TO ANYCONSTRUCTION.2. THIS PLAN IS NOT A BOUNDARY SURVEY AND IS NOT INTENDED TO BE USED AS ONE.MONUMENTATION RECOVERED IS CONSISTENT WITH RECORDED DOCUMENTS.3. PROPERTY LINE INFORMATION IS BASED ON A PLAT ENTITLED "A PLAT OF SURVEYNINETY NINE SWIFT STREET ASSOCIATES, LLC" PREPARED BY CIVIL ENGINEERINGASSOCIATES DATES APRIL 11, 2019.4. SITE INFORMATION IS BASED ON A FIELD SURVEY PERFORMED BY CIVILENGINEERING ASSOCIATES, INC APRIL 2019. CIVIL ENGINEERING ASSOCIATES, INC.SURVEY ORIENTATION IS "GRID NORTH", VERMONT COORDINATE SYSTEM OF 1983(HORIZONTAL) AND NAVD88 (VERTICAL) ESTABLISHED FROM GPS OBSERVATIONSON SITE.5. THIS PROPERTY FALLS WITHIN THE COMMERCIAL - SWIFT STREET ZONING DISTRICT.LEGENDOEG100EXISTING CONTOUREXISTING CURBEXISTING FENCEEXISTING GRAVELEXISTING PAVEMENTEXISTING SWALEEXISTING OVERHEAD ELECTRICEXISTING GASPROJECT BENCHMARKEXISTING UTILITY POLEEXISTING DECIDUOUS TREEEXISTING CONIFEROUS TREEEDGE OF BRUSH/WOODSSETBACK LINEPROPERTY LINEIRON ROD/PIPE FOUNDSTREAMSTSTWEXISTING STORMEXISTING GRAVITY SEWEREXISTING TELEPHONEEXISTING WATERUEEXISTING UNDERGROUND ELECTRICEXISTING WELLWSOUTH BURLINGTONBURLINGTONPROJECTLOCATION897P:\AutoCADD Projects\2019\19130\1-CADD Files-\dwg\19130-Site - Preload.dwg, 5/28/2020 7:45:02 AM
DSMDSMSAL1" = 20'19130C2.0MAY, 2020LOCATION MAP1" = 2000'NINETY NINE SWIFTSTREETASSOCIATES, LLC99 SWIFT STREET SOUTH BURLINGTONVERMONT 05403105 SWIFT STREETPROPOSEDCONDITIONSSITE PLANSOUTH BURLINGTONBURLINGTONPROJECTLOCATIONACE105 SWIFT STREETSOUTH BURLINGTON VT897P:\AutoCADD Projects\2019\19130\1-CADD Files-\dwg\19130-Site - Preload.dwg, 5/28/2020 7:45:27 AM
DSMDSMSAL1" = 20'19130C3.0MAY, 2020LOCATION MAP1" = 2000'NINETY NINE SWIFTSTREETASSOCIATES, LLC99 SWIFT STREET SOUTH BURLINGTONVERMONT 05403105 SWIFT STREETEPSC PLANSOUTH BURLINGTONBURLINGTONPROJECTLOCATIONACE105 SWIFT STREETSOUTH BURLINGTON VT897P:\AutoCADD Projects\2019\19130\1-CADD Files-\dwg\19130-Site - Preload.dwg, 5/29/2020 7:08:15 AM
AS SHOWNC3.1EPSC NARRATIVE &DETAILSACEDSMDSMSAL19130MAY., 2020IntroductionThis 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:Mulching 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 treatmentstructures.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, withthe following exceptions:x If no precipitation within 24 hours is forecast and work will resumein the same disturbed area within 24 hours, daily stabilization isnot necessary.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 1 inch thickness.11. Use stone to stabilize areas such as the perimeter of buildings underconstruction or where construction vehicle traffic is anticipated. Stonepaths should be 10 to 20 feet wide to accommodate vehicular traffic.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:dec.vermont.gov/watershed/stormwater/permit-information-applications-feesN.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"COMPACTEDBACKFILLNINETY NINE SWIFTSTREETASSOCIATES, LLC99 SWIFT STREET SOUTH BURLINGTONVERMONT 05403105 SWIFT STREET105 SWIFT STREETSOUTH BURLINGTON VTP:\AutoCADD Projects\2019\19130\1-CADD Files-\dwg\19130-Details - Preload.dwg, 5/28/2020 7:48:08 AM