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HomeMy WebLinkAboutErosion Control SpecificationsTHIS SHEET TO BE USED FOR EROSION CONTROL ONLY. EROSION & SEDIMENT CONTROL DATA PROJECT INFORMATION 1B Narrative: This project is Windsor Grove, a residential subdivision. Major land disturbing activities are anticpated to be started and completed according to the following table: Clearing, grubbing & rough grading - start 6/25/01, complete 7/16/01 Sanitary Sewers - start 7/16/01, complete 7/30/01 Storm Sewers - start 7/30/01, complete 8/13/01 Water main - start 8/13/01, complete 8/27/01 Curbs and pavement - start 8/27/01, complete 9/17/01 Utility installation - start 9/17/01, complete 10/15/01 Finish grade and temp. /perm. Seeding - 10/15/01, complete 11/12/01 1E Landuse of Adjacent Areas: All areas are Agricultural & Residential around site. TOPOGRAPHIC, DRAINAGE, AND GENERAL SITE FEATURES: 2A Existing Vegetation: The parcel of real estate to be developed as Windsor Grove is an agricultural field supporting existing vegetation comprised of former agricultural crop residue. 2B There does exist one (1) wetland on the northwest corner of the property at the rear of lots 1 & 2. 2C There is no 100 -year Floodplain, Floodway fringe or Floodway pertaining to the land parcels to be developed as Windsor Grove. 2D Refer to Soils Map located on Sheet 1 for soils information. 2F Storm water is collected via an on -site system of inlets, pipes, and swales and conveyed to the proposed detention pond. The storm water outfalls for this project are as follows: 2H The proposed detention pond facilities as well as the wetland pointed out in 2B are potential areas where stormwater may enter groundwater; this section's drainage contributes to the proposed pond. LAND DISTURBING ACTIVITIES: 3A Location and approximate dimensions of all disturbed areas, see Sheet 6 & 7. The areas where existing vegetative cover will be preserved is shown on sheet 6 & 7. 3B There will be no soil stockpiles and or borrow areas utilized during construction of this phase of development. All excess soil shall be utilized in fill placement for construction of this project. EROSION AND SEDIMENT CONTROL MEASURES: 4A Refer to Soil Erosion Control Implementation Schedule shown on this plan sheet. 48 Refer to Soil Erosion Control Maintenance Schedule shown on this plan sheet. 4C Since all water along our sites perimeter is entering our site, it is not necessary to put in place perimeter sediment control measures. 4E Refer to Soil Erosion Control Plan on sheet 6 & 7. 4K The entire 37.338 acres comprising Windsor Grove shall be considered "Disturbed Area" during the construction of the initial site development infrastructure and shall be stabilized with the erosion control practices delineated on this plan sheet and in conjunction with Sheet 6 & 7. Subsequent to the initial site development construction, each residential lot being built upon shall be considered as a separate "disturbed area" and each builder shall be required to comply with the builder's erosion control requirements thereby assuring that each developed lot is provided with a stable, permanent vegetative cover. TLT /EROSION FENCE POST /al FENCE POST SHOULD J BE BURIED --1' BELOW _ GROUND SURFACE, Recommended Erosion Control Measures Erosion Control Blanket: Recommend erosion control blankets such as North American Green S150 be installed as a temporary erosion control measure in the bottom of any awale with a concentrated surface water flow. Refer to erosion control practice number 3.17 . Straw Bale Drop Inlet Protection: Recommend using straw bale drop inlet protection as per erosion control practice number 3.54 as a temporary erosion control measure until blankets are installed. Other drop inlet protection practices may become necessary upon the recommendation of the engineer or erosion control consultant if a specific need arises during construction. Topsoil Salvage and Utilization: As per erosion control practice number 3.02. Removal of topsoil to a depth of six inches (or more If required by the engineer) from all areas to m excavated or filled. Topsoil should be stored at a location where it will not interfere with construction operations. Temporary Seeding: Recommend temporary seeding as per erosion control practice number 3.11 if disturbed ground is to be left bare for two months or more. In addition, it is recommended red clover be added to the seeding mixture at a rate of 10 pounds per acre. Dormant and Frost Seeding: As per practice number 3.13 attached to be applied If necessary. Surface Roughening: As per erosion control practice number 3.03, suggest using a bulldozer to track with cleats perpendicular to the slope of slopes on disturbed ground of six percent or greater and around the shore of the lakes as a temporary measure until ready for blankets. Temporary Gravel Construction Entrance /Exit Pad: Recommended as per erosion control practice number 3.01. Tree Conservation /Protection: As per erosion control practice number 3.83, the contractor shall, at the direction of the developer, endeavor to save and protect trees of value and worth which do not impair construction of improvements as designed. In the event cut or fill exceeds 0.5 foot over the root area, the developer shall be consulted with respect of protective measure to be taken, if any, to preserve such trees. Maintenance Schedule: Maintenance of all erosion control practices should be done as needed on a weekly basis and after all large storms. A construction supervisor should be assigned the task of seeing that all practices are installed and maintained according to the design criteria. Maintenance for each erosion control practice should be conducted per maintenance schedule shown on each erosion control practice job sheet (attached). SILT FENCE DETAIL NOT -TO -SCALE SEASONAL SOIL PROTECTION CHART STABILIZATION PRACTICE JAN. FEB. MAR. APR. MAY JUN. JUL. AUG. SEPT. OCT. NOV. DEC. PERMANENT SEEDING A - - - - - - - - - - - - - - - - - - - - - - DORMANT SEEDING - - B -� - - B� SEEDING -- E--- -- - - - - -- SODDING F** - - - MULCHING G A = KENTUCKY BLUE GRASS 40 lbs. /AC.: CREEPING RED FESCUE 40 lbs. /AC.: PLUS 2 TONS STRAW MULCH /AC. OR ADD ANNUAL RYEGRASS 20lbs > /AC. B - KENTUCKY BLUE GRASS 60 lbs. /AC.: CREEPING RED FESCUE 60 lbs. /AC.: PLUS 2 TONS STRAW MULCH /AC. OR ADD ANNUAL RYEGRASS 30lbs> /AC. C - SPRING OATS 3 BUSHEL /ACRE D - WHEAT OR RYE 2 BUSHEL /ACRE E = ANNUAL RYEGRASS 40 lbs. /AC. (1 lb./1000 sq. ft.) F = SOD G - STRAW MULCH 2 TONS /ACRE IRRIGATION NEEDED DURING JUNE, JULY, AND /OR SEPT. "* = IRRIGATION NEEDED FOR 2 TO 3 WEEKS AFTER APPLYING SOD GROUND SURFACE E MATERIAL SHOULD BE BURIED 6" BELOW GROUND SURFACE, CONTRACTOR SHALL MAINTAIN EXISTING STREETS FROM DEBRIS OF DIRT,SAND,OR STONE AND SHALL BE RESPONSIBLE FOR THE CLEANING OF SUCH ITEMS. AFTER COMPLETION OF THE WORK, THE BUILDERS WILL BE REQUIRED TO KEEP STREETS FREE OF THE SAME, AT THE CITIES DISCRETION. EXISTING VEGETATION: WHEAT FIELD /WOODED ULTIMATE RECIEVING WATER: WHITE RIVER EROSION CONTROL FOR INDIVIDUAL LOTS 1. CONSTRUCT A GRAVEL DRIVE 2. CONFINE ALL TRAVEL TO THE GRAVEL DRIVE 3. PRESERVE AS MUCH OF THE EXISTING VEGETATION AS POSSIBLE 4. SOME FORM OF BARRIER REQUIRED ALONG REAR YARD SWALE TO PROTECT THE SWALE , SILT FENCE, STRAW BALE ETC. 5. IF THERE ARE LARGE EXPOSED AREAS ON OR NEAR SLOPES A SILT FENCE MAY BE REQUIRED 6. AFTER FINAL GRADING, SEED OR SOD THE YARD AS SOON AS POSSIBLE 7. AFTER A YARD IS RE- VEGETATED, REMOVE ALL TEMPORARY EROSION CONTROL MEASURES ALL AREAS NOT DENOTING PERMANENT SEEDING OR FIBER BLANKETS SHALL BE TEMPORARILY SEEDED. RECOMMENDED EROSION CONTROL MEASURES WERE TAKEN FROM CHAPTER 3 AS STATED IN THE INDIANA HANDBOOK FOR EROSION CONTROL IN DEVELOPING AREAS. ADDITIONAL EROSION CONTROL MEASURES MAY BE REQUIRED BY INSPECTOR AS CONDITIONS WARRANT. CONSTRUCTION SEQUENCE FOR BUILDING SITE EROSION CONTROL PRACTICFS DROP INLET REAR YARD PROTECTION DRAINAGE SWALE o a f " a o SUBSOIL TREE CONSERVATION SF SILT FENCING SILT FENCE WEEKLY, AFTER STORM EVENTS AND AS NEEDED PRIOR TO CLEARING AND GRADING PS STOCKPILE GRAVEL ENTRANCE/ SF SF WEEKLY, AFTER STORM EVENTS AND AS NEEDED CURB INLET PROTECTION TEMPORARY DIVERSIONS WEEKLY, AFTER STORM EVENTS AND AS NEEDED ALONG WITH ROUGH GRADING DROP INLET PROTECTION WATER AS NEEDED AFTER ROUGH GRADING PERMANENT SEEDING SOIL SALVAGE AND unuzATioN AREA TO BE TOP- a SOILED, SEEDED, a EROSION CONTROL MATTING PS S a p$ \ ® a AFTER FINISH GRADING AND MULCHED WEEKLY, AFTER STORM EVENTS AND AS NEEDED AFTER EACH INLET IN PLACED SEED, SOD, & LANDSCAPE AROUND UNITS FINISHED WATER AS NEEDED TOPSOIL REMOVAL OF STRAW BALES N/A AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED REMOVAL OF INLET PROTECTION ` AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED REMOVAL OF SILT FENCE STOCKPILE BY OWNER AT ® COMPLETION OF CONSTRUCTION. !_ HOUSE \ GARAGE --" SIDE YARD ®� O R j '� CONSTRUCTION ENTRANCE/ EXIT DRAINAGE SWALE e 1 ± ISF S �s SF a STREET SIDE- WALK VEXISTING CURB AND GUTTER CURB INLET PROTECTION I NOTES: 1. EROSION/ SEDIMENT CONTROL MEASURES MUST BE FUNCTIONAL AND BE MAINTAINED THROUGHOUT CONSTRUCTION. 2. MAINTAIN POSITIVE DRAINAGE AWAY FROM THE STUCTURE. EROSION CONTROL SCHFDUI F EROSION CONTROL PLAN LEGEND PROPERTY LINE/ DRAINAGE SWALE �- EXISTING DRAINAGE I -�� FINISHED DRAINAGE Fe TREE CONSERVATION SF SILT FENCING SILT FENCE WEEKLY, AFTER STORM EVENTS AND AS NEEDED PRIOR TO CLEARING AND GRADING EXISTING INLET PROTECTION GRAVEL ENTRANCE/ PRIOR TO CLEARING AND GRADING EXIT PAD WEEKLY, AFTER STORM EVENTS AND AS NEEDED CURB INLET PROTECTION TEMPORARY DIVERSIONS WEEKLY, AFTER STORM EVENTS AND AS NEEDED ALONG WITH ROUGH GRADING DROP INLET PROTECTION WATER AS NEEDED AFTER ROUGH GRADING PERMANENT SEEDING SOIL SALVAGE AND unuzATioN AFTER FINISH GRADING EROSION CONTROL MATTING PS S PERMANENT SEEDING SAMPLE EROSION/ SEDIMENT CONTROL PRACTICE PLAN FOR A TYPICAL ONE- OR TWO- FAMILY DWELLING UNDER CONSTRUCTION EROSION CONTROL MEASURE MAINTENANCE INSTALLATION SEQUENCE STONE ENTRANCE AS NEEDED PRIOR TO CLEARING AND GRADING SILT FENCE WEEKLY, AFTER STORM EVENTS AND AS NEEDED PRIOR TO CLEARING AND GRADING EXISTING INLET PROTECTION WEEKLY, AFTER STORM EVENTS AND AS NEEDED PRIOR TO CLEARING AND GRADING TREE PROTECTION WEEKLY, AFTER STORM EVENTS AND AS NEEDED PRIOR TO CLEARING AND GRADING TEMPORARY DIVERSIONS WEEKLY, AFTER STORM EVENTS AND AS NEEDED ALONG WITH ROUGH GRADING TEMPORARY SEEDING WATER AS NEEDED AFTER ROUGH GRADING PERMANENT SEEDING WATER AS NEEDED AFTER FINISH GRADING EROSION CONTROL MATTING WEEKLY, AFTER STORM EVENTS AND AS NEEDED AFTER FINISH GRADING STRAW BALES WEEKLY, AFTER STORM EVENTS AND AS NEEDED AFTER FINISH GRADING INLET PROTECTION WEEKLY, AFTER STORM EVENTS AND AS NEEDED AFTER EACH INLET IN PLACED SEED, SOD, & LANDSCAPE AROUND UNITS FINISHED WATER AS NEEDED AFTER FINISHED GRADING AROUND FINISHED UNITS REMOVAL OF STRAW BALES N/A AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED REMOVAL OF INLET PROTECTION N/A AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED REMOVAL OF SILT FENCE N/A AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED Soil Erosion Control Summary The following is a list in sequence of construction activities to control soil erosion: i. Contractor shall install sediment traps and straw bale filters, as shown. 2. Grade the site (sides of swales, mounds and ponds to be seeded and mulched immediately upon completion). Temporary seeding shall be recommended for all swales and disturbed areas that cannot be final seeded within a time period that will prevent slope erosion. For temporary seeding, the contractor shall utilize a fast growing seed of either oats, annual ryegross, wheat or rye depending on time of year. Disturbed areas should be kept to a minimum at all times. 3. Contractor shall control mud accumulation on all streets surrounding project by installing stone surface at all locations where construction traffic leaves the site. Dust shall be kept to a minimum by utilizing sprinkling, Calcium Chloride, Vegetative cover, spray on adhesives or other approved methods. 4. Maintain all filters and traps during construction to prevent any blockages from accumulated sediment. Additional seeding and straw bales may be required during construction as specified by Engineer or Soil Conservation Service. Payment for additional straw bales shall be at the Contractors expense. Payment for additional rip rap (not shown on plans) and seeding shall be paid for on a unit basis. 5. Contractor shall Install all sanitary sewers, storm sewers, subsurface drains, and water mains. Straw bale filters shall be installed at all storm inlets (including street Inlets). Seeding Specifications: I. Ditch Banks: shall be seeded and covered with North American Green fiber blanket #S150 and #SC150 (or Equal) or Hydroseeded with straw mulch. The Contractor shall follow the manufacturer's recommended guidelines for installation and staple patterns when installing the fiber blankets. Seeding rate: 110,# /acre or 2.5 #/1000 S.F. Seeding mixture: 38% Kent. 31 Fescue 19% Perennial Rye 19% Annual Rye 14% Orchard Grass 10% Kent. Bluegrass 2. 4" of topsoil (minimum) shall be placed prior to permanent seeding. 3. If grades are established between May 15 and August 10, a temporary seeding consisting of 40# of Annual Ryegross shall be planted per acre. 4. If grades are established between October 15 and December 30, either Rye (grain) or Wheat may be used at the rate of 2 bushels /Ac. All grains should be mowed prior to seed maturing. 5. If temporary seeding is established prior to permanent seeding, the mulch may be eliminated except in "bare areas. 6. If grading occurs during December, January, or February, use dormant seeding and it should be done within 7 days of lost land disturbing activity. NOTE: TO CONTRACTOR 1. Prior to any work commencing contractor shall install stone drive at entrance, and all silt fences shown on plan. 2. Upon completion of the storm structure from being built the fabric drop inlet protection is to be installed ON curb inlets and straw bales on yard inlets immediately. 3. Upon completion of the swale construction, contractor shall notify engineer to as- built, upon review of as -built engineer shall notify contractor to install the erosion control blankets as soon as possible. FORMS/22687 ANGLE FIRST STAKE TOWARD PREVIOUSLY LAID BALE WOOD STAKES 15 " -20" IN GROUND r i I 1 �r I `y kL J, STRAW BALE DAM DETAIL NOT -TO -SCALE Gravel bags overlap onto the curb 1. Fill geotextile bags approximately half full with 2 to 3 inch stone or gravel. 2. At a position downslope of the lot and upslope of the inlet, lay bags tightly in a row curving upslope from curb and away from inlet. 3. Overlap bags onto the curb and extend a min- imum of 3 feet into the street. 4. For additional layers, overlap bags with the row beneath, and leave a one --bag gap in the middle of the top row to serve as a spillway. 5. Place bags in an arc around curb inlets that are in a sump position. 6. Set up safety /traffic barriers to keep vehichles from hitting bags, causing possible injury. 7. Inspect and repair as needed, cnd remove any accumulated sediments after every storm. 3 ft (min.) Gap between bags acts as a spillway CURB INLET PROTECTION DETAIL CHINK GAPS W /STRAW � u SECTION T ``,111111 /llff /ff�� ♦�```, STOEPp��'�i�i J............. :oQ Q No. � i- 19358 o STATE OF ' �,� acs' •... .•• G����. S %NA �1uc` _ 6' p31 ' 3, 225 GREEN EROSION CONTROL BLANKETS. STAPLE 200 - F - A B X x x 1 STAPLE 1 -1/2 STAPLES PER SQ. YD. P R SQ. YD. 2 STAPLES PER SQ. YD. 4% f_X1 r X x x X xDx 1 X x x 1 375 STAPLES PER SQ. YD. z75 z5o C B C C B C D A A B B 2:1 1:1 LOW MM/HIGH FLOW FLOW CHASMU. o AND SLOPE GRADIENT SHORElJNE EROSION CONTROL BLANKET STAPLE PATTERN GUIDE :III r M U) Z 0 5 W o! Y o! a Q 0 } } \ M U) m W N O0 ZO o 93 Z 0 O l 0 W H 0_ w U C14 z � a 0 Lo °z W rn > `- Of GD i1 0 X Z < Q J r` I CD (0 I a0 W r LI J I _Z O O 00 Z I W Z J 0) cn �} 0 00 a Z z O d V/ Z Z O Z U LL_ W U > nnW 0 1r_In_ (/ V ) r NO O v J Z O Z U 3�: Z O O w M of W SHEET NO. OF 28 SHEETS '10B N0'33697 STAPLE PATTERNS APPLY TO ALL NORTH AMERICAN 225 GREEN EROSION CONTROL BLANKETS. STAPLE 200 PATTERNS WILL VARY DEPENDING UPON SLOPE LENGTH, SLOPE GRADE, SOIL TYPE AND AVERAGE 175 ANNUAL RAINFALL. � 150 W 125 gJ 100 75 50 25 Fr. 2 STAPLES PER SQ. YD. 4% f_X1 r X x x X xDx 1 X x x 1 375 STAPLES PER SQ. YD. z75 z5o C B C C B C D A A B B 2:1 1:1 LOW MM/HIGH FLOW FLOW CHASMU. o AND SLOPE GRADIENT SHORElJNE EROSION CONTROL BLANKET STAPLE PATTERN GUIDE :III r M U) Z 0 5 W o! Y o! a Q 0 } } \ M U) m W N O0 ZO o 93 Z 0 O l 0 W H 0_ w U C14 z � a 0 Lo °z W rn > `- Of GD i1 0 X Z < Q J r` I CD (0 I a0 W r LI J I _Z O O 00 Z I W Z J 0) cn �} 0 00 a Z z O d V/ Z Z O Z U LL_ W U > nnW 0 1r_In_ (/ V ) r NO O v J Z O Z U 3�: Z O O w M of W SHEET NO. OF 28 SHEETS '10B N0'33697 2:1 1:1 LOW MM/HIGH FLOW FLOW CHASMU. o AND SLOPE GRADIENT SHORElJNE EROSION CONTROL BLANKET STAPLE PATTERN GUIDE :III r M U) Z 0 5 W o! Y o! a Q 0 } } \ M U) m W N O0 ZO o 93 Z 0 O l 0 W H 0_ w U C14 z � a 0 Lo °z W rn > `- Of GD i1 0 X Z < Q J r` I CD (0 I a0 W r LI J I _Z O O 00 Z I W Z J 0) cn �} 0 00 a Z z O d V/ Z Z O Z U LL_ W U > nnW 0 1r_In_ (/ V ) r NO O v J Z O Z U 3�: Z O O w M of W SHEET NO. OF 28 SHEETS '10B N0'33697 V/ Z Z O Z U LL_ W U > nnW 0 1r_In_ (/ V ) r NO O v J Z O Z U 3�: Z O O w M of W SHEET NO. OF 28 SHEETS '10B N0'33697