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HomeMy WebLinkAbout06 45-01Sp Erosion Control SpecificationsTHIS SHEET TO BE USED FOR EROSION CONTROL ONLY. Soil Erosion Control Summary The following is a list in sequence of construction activities to control soll erosion: 1. 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 ryegrass, 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 ail 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). FENCE POST til FENCE POST SHOULD BE BURIED --1' BELOW GROUND SURFACE. Recommended Erosion Control Measures Seeding Specifications: I. Ditch Banks: shall be seeded and covered with North American Green fiber blanket #5150 and #SC150 (or Equal) or Hydroseeded with straw mulch. The Contractor shall follow the manufacturers 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. a 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. 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 sw€zle 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 be 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 o 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 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 PRACTICES EROSION CONTROL PLAN LEGEND PROPERTY LINE/ DROP INLET REAR YARD DRAINAGE SWALE PROTECTION /DRAINAGE SWALE °%,!° _*- %,!° F ° ° ° - o EXISTING DRAINAGE SUBSOIL PS STOCKPILE SF sF -- -i- FINISHED DRAINAGE AREA TO BE TOP- ° ° SOILED, SEEDED, a © TOPSOIL AND MULCHED ` STOCKPILE BY OWNER AT I Fel TREE CONSERVATION COMPLETION OF CONSTRUCTION. HOUSE _ GARAGE SF SILT FENCING SIDE YARD ° PS := - CONSTRUCTION DRAINAGE SWALE ° a O ?+ . ° ENTRANCE/ EXIT ° -= ° GRAVEL ENTRANCE/ i EXIT PAD STREET SIDE- CURB INLET _T WALK EXISTING CURB AND GUTTER PROTEC11ON CURB INLET PROTECTION NOTES: 1. EROSION/ SEDIMENT CONTROL MEASURES MUST BE FUNCTIONAL AND BE MAINTAINED THROUGHOUT CONSTRUCTION. 2. MAINTAIN POSITIVE DRAINAGE AWAY FROM THE STUCTURE. EROSION CONTROL SCHEDULE DROP INLET PROTEC11ON SOIL SALVAGE AND U11LIZA110N PS PERMANENT SEEDINGI 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 SEASONAL SOIL PROTECTION CHART STABILIZATION PRACTICE JAN. FEB. MAR. APR. MAY JUN. JUL. AUG. SEPT. OCT. NOV. DEC. PERMANENT A SEEDING ------------------------- DORMANT B 8� SEEDING - - - - - - - - - - - - - - - - - - - - - - - - - - - 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 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 WOOD STAKES 15 " -20" IN GROUND ANGLE FIRST STAKE TOWARD PREVIOUSLY LAID BALE � r r_ y li I r /r ,. W y lie r X j Y Y Y 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 bogs 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 bogs 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, and remove any accumulated sediments after every storm. Gap between bags acts an a spillway Runoff ;off un CURB INLET PROTECTION DETAIL STONE ACCESS DRIVE DETAIL 1 STAPLE 1 -1/2 STAPLES PER SQ. YD. PER SQ. YD. 2 STAPLES PER SQ. YD. 21 4' t -x x «- -ft x x x it X xDx X x x 3.5 STAPLES PER SQ. YD. B 275 C 250 STAPLE PATTERNS APPLY TO ALL NORTH AMERICAN 2.26 GREEN EROSION CONTROL BLANKETS. STAPLE 200 PATTERNS WILL VARY DEPENDING UPON SLOPE B LENGTH, SLOPE GRADE, SOIL TYPE AND AVERAGE 175 ANNUAL RAINFALL � 150 a 125 93100 75 50 25 FT 2 STAPLES PER SQ. YD. 21 4' t -x x «- -ft x x x it X xDx X x x 3.5 STAPLES PER SQ. YD. B C C C C D B A A B B 20' +1 &1 2:1 1:1 Low MMMIGH Flow Flaw cHANNEI a1ANN& AND SLOPE GRADIENT sHORUME EROSION CONiROL BLANKET STAPLE PATTERN GUIDE CHINK GAPS W /STRAW U T SECTION r No.� y= it 19358 -0 STATE OF hoc ' lAtaw' : ��.�11 p SS/ONAL ENS,. ''�rr►nnm► ° ° °° M v, Z O 5 w 0! Y a' a M a 0 O m Q m W O 4O m c W 1�n c r O O M 1 O W Li F- D_ W U (/) C'4 of 0 65 Lil °) } 4- Of 00 0 M 0 x Z <I: Q Li J I a7 cQ � I W h L LJ I Z_ O O 00 Z I W 0 u') K) Z rn U --I m 0 00 Z 0 0 J O a- < Z Q 0 Z V! Z Z M ® � Z I- Q Z U 0 LL U U W LLJ 0- V) V) %1 Q� 0 L_L 0 I- Z 0 z U 0 z = 0 CD VJ of 0 M �N/ W ry ry W Q U SHEET NO. 6 OF 14 SHEETS JOB N0.29648