VH-TCB - NORTH COMMONS_permit set-L.11 - ErosionTECTECTECTECTECTECGGGG2"222.3'GWW8" CLD
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18" HDPEEROSION CONTROL BARRIERSEE 1/ L.11Erosion Control NotesThis project requires coverage under the EPA NPDES General Permitfor Stormwater Discharges from Construction Activities. Contractorand Owner are responsible for finalizing a Stormwater PollutionPrevention Plan (SWPPP) and filing for the NDPES permit prior to thestart of construction. All work shall conform to the requirements ofthe Permit for this project. All clearing, grading, drainage,construction, and development shall be conducted in strictaccordance with the SWPPP.NPDES PermitThe following is intended to provide a general sequence ofconstruction activities. A final sequencing plan will be prepared andsubmitted by the contractor selected for construction.1. Delineate the approximate limits of work in the field.2. Install erosion control barrier, inlet protection and tracking pad asrequired.3. Clear and grub vegetation slated for removal within work area only.4. Excavate and rough grade. Excess soils to be stockpiled within limitsas shown. Protect all soil stockpiles with erosion control barrier at thetoe of the slope. All stockpiles to be covered with temporary seedcover.5. Install new stormwater drainage system as shown up to newconnection points.6. Rough and fine grade for roadways and sidewalks.7. Install final paving, concrete, and other surfaces and improvementsas shown within the right-or-way.General Sequence of ConstructionPROVIDE INLET PROTECTIONAT ALL INLET STRUCTURESUNTIL SITE IS STABILIZED.TYPICALPROPOSED WORK AROUND EXISTING TREESCONSISTS OF INSTALLATION OF GRAVEL TRAIL& PLANTING ONLY. DUE THE PROXIMITY OFTHE TREES, WORK WITHIN THE DRIP LINE(S) ISNECESSARY. ALL EFFORTS SHALL BE MADE TOMINIMIZE DISTRUBANCE. TREE PROTECTIONAROUND EXISTING TREES SHALL REMAIN INPLACE AT ALL TIMES OTHER THAN DURINGPERIODS TO INSTALL THE TRAIL ANDPLANTINGS.TRACKING PAD20' x 40'SEE DETAIL 2/ L.11NPQ141514151616Copyright Davis Square Architects, Inc.cREVISIONS/SUBMISSIONSNo.DateDesignedCheckedDateProject No.ScaleDrawing No.ConsultantProjectTitle23456789101112131ABCDEFGHJKLM23456789101112131NOTESF:\Hospital Hill\TCB_CDC\DRAWINGS\NORTH COMMONS\VH-TCB - NORTH COMMONS_cd set.dwgWeb: http://www.berkshiredesign.comEmail: bdg@berkshiredesign.comFAX (413) 582-7005 (413) 582-70004 Allen Place, Northampton, Massachusetts 01060BerkshireDesignGroupPlanningCivil EngineeringLandscape ArchitectureLand SurveyingNEW CONSTRUCTIONNORTH COMMONS AT VILLAGE HILLNORTHAMPTON, MAEROSION CONTROL PLANJDS/CCJDS17031.011"=30'07/06/2020 L.11PERMIT
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2019060301590Tree ProtectionL.113not to scale40' min.8"min.PUBLIC ROADGEOTEXTILE SEPARATION FABRIC2"-3'' WASHED COARSEEXIST. GROUNDFOR FULL WIDTH AND LENGTHAGGREGATESTABILIZED CONSTRUCTION ACCESS NOTES:1. DIMENSIONS:WIDTH: 15' FLARED TO 25' AT ROADWAYLENGTH: 40' MIN.GRADE AND CROSS SLOPE: 2%2. CLEAR ACCESS OF ALL VEGETATION, ROOTS, AND OTHER OBJECTIONAL MATERIAL.3. GRADE THE ROAD SUBGRADE SO THAT THE ACCESS WILL NOT DRAIN OFF SITE.4. MAINTAIN THE GRAVEL PAD IN A CONDITION TO PREVENT MUD, SEDIMENT, ETC. FROM LEAVING THE SITE. SHOULD MUD/SEDIMENTBE TRACKED OR WASHED INTO THE PUBLIC ROAD IT SHALL BE REMOVED IMMEDIATELY.Erosion Control BarrierL.111not to scaleTracking PadL.112not to scaleEROSION CONTROL BARRIERSEE DETAIL SHEET L.7PROVIDE INLET PROTECTIONAT ALL INLET STRUCTURESUNTIL SITE IS STABILIZED.TYPICALTREES TO BE REMOVED(CROSS-HATCHED)SEE DEMO PLAN SHEET L.2ADJACENT ROLLS SHALLTIGHTLY ABUT12" DIA. STRAW WATTLESSECTIONSILT FENCE TUCKEDUNDER STRAW WATTLESILT FENCESILT FENCEENTRENCHED 3"FLOW2.All erosion control barriers shall be placed prior to beginning work as per theplan and as per the appropriate detail specification.3.Wherever erosion control barriers are used, they shall be maintained in goodworking condition until ground cover is reestablished. Silt fence shall beperiodically cleaned as necessary to assure proper and effective functioning.Straw wattles shall also be replaced as necessary, to provide adequate function.4.Natural vegetation shall be retained wherever feasible up to the scheduled startof construction activity in the area. Where possible, clearing shall immediatelyprecede construction activity.5.No siltation shall be allowed into the wetlands on site, and no erosion ofany bank edge shall be allowed under any circumstances.6.Soil stockpiles shall be shaped and seeded with temporary cover as per seedingspecifications or mulched if grading is to be delayed over winter. The downhilltoe-of-slope of all stockpiled soils shall be protected by erosion control barriers.7.If any questions arise regarding erosion and sedimentation control measures,the Project Landscape Architect shall be consulted immediately.1.Erosion control measures shall be incorporated in the sequence of constructionto prevent sediment-laden runoff from leaving the site, and shall, whereapplicable, consist of at least the following procedures:a.Erosion control barriers shall be placed along downslope site boundariesprior to commencing any other work. Fence material shall be Mirafi140N, Trevira 1127, or approved equal.b.Catch basin sediment barrier shall be installed in all catch basins and draininlets to prevent sediment-laden runoff from entering drainage system.c.New or regraded slopes of 3:1 or greater shall receive spread straw and/orseed and fertilizer as per plans. New or regraded slopes of 2:1 or greatershall be blanketed with Curlex erosion control matting, or approved equal;provide temporary slope erosion control where required.d.Fill and grading shall be treated with slope stabilization seeding or groundcover and hay mulch upon completion.NOTES1.SEDIMENT BARRIER SHALL BE INSTALLED AT ALL DRAININLETS WITHIN THE SITE AND AT ALL INLETSDOWN-SLOPE OF DISTURBED AREAS.Catch Basin Sediment BarrierL.114not to scalePROTECT ALL NEWSTREET TREES WITHCHAIN LINK FENCINGAROUND 4 SIDES