HomeMy WebLinkAboutDec 13 2001 07 Erosion Control Specificationsr
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THIS SHEET TO BE USED
FOR EROSION CONTROL ONLY.
PERSON ONSITE RESPONSIBLE FOR EROSION CONTROL:
TOM KUTZ
CENTEX HOMES
(317)- 915 -2200
THERE ARE NO 100 YEAR FLOOD PLAINS ON THIS SITE.
ULTIMATE RECEIVING WATER:
WHITE RIVER
EROSION CONTROL SCHEDULE
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, a LANDSCAPE
AROUND UNITS FINISHED
WATER AS NEEDED
AFTER FINISHED GRADING AROUND FINISHED UNITS
REMOVAL OF STRAW BALES
N/A
ARE STABILIZEDAS DRAINING TO THESE AREAS
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. Lake no. #3 will need to be built first to serve as a
sediment trap for drainage. The temporary ditch
south of lot 22 will then need to constructed.
3. 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.
4. 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.
5. 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.
6. 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).
Recommended Erosion Control Measures
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#1`1000 S.F.
Seeding mixture: 38% Kent. 31 Fescue
19% Perenniai 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 Ryegrass
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 gralns 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
last land disturbing activity.
Erosion Control Blanket: Recommend erosion control blankets such as North American Green 5150
be installed as a temporary erosion control measure in the bottom of any swale 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 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 Con servation/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).
CONSTRUCTION SEQUENCE FOR BUILDING SITE EROSION CONTROL PRACTICES
DROP INLET REAR YARD
PROTECTION DRAINAGE SWALE
0 0 0
SUBSOIL
PS STOCKPILE SF
AREA TO BE TOP- 40
0 \
SOILED, SEEDED, e TOPSOIL
AND MULCHED ® ® e STOCKPILE
BY OWNER AT
COMPLETION OF
CONSTRUCTION.
HOUSE
GARAGE -�
CONSTRUCTION
SIDE YARD c?•!: �`
® �•S :'t ENTRANCE / EXIT
DRAINAGE SWALE
SIDE-
WALK
CURB INLET PROTECTION
EXISTING CURB AND GUTTER
NOTES: 1. EROSION/ SEDIMENT CONTROL MEASURES MUST BE FUNCTIONAL AND BE
MAINTAINED THROUGHOUT CONSTRUCTION.
2. MAINTAIN POSITIVE DRAINAGE AWAY FROM THE STUCTURE.
EROSION CONTROL
PLAN LEGEND
-i... PROPERTY LINE/
DRAINAGE SWALE
EXISTING DRAINAGE I
-ism- FINISHED DRAINAGE I
® TREE CONSERVATION
SF SILT FENCING
": �: ••s: GRAVEL ENTRANCE/
EXIT PAD
CURB INLET
PROTECTION
DROP INLET
PROTECTION
SOIL SALVAGE AND
UTILIZATION
SPERMANENT SEEDING
SAMPLE EROSION/ SEDIMENT CONTROL PRACTICE PLAN FOR A TYPICAL
ONE- OR TWO- FAMILY DWELLING UNDER CONSTRUCTION
Maintenance:
Seeding *Inspect periodically, especially after storm events, until the stand
is successfully established. (Characteristics of a successful stand
include: vigorous dark green or bluish -green seedlings; uniform
density with nurse plants, legumes, and grasses well inter - mixed;
green leaves; and the perennials remaining green throughout the
summer, at least at the plant base.)
*Plan to add fertilizer the following growing season according to
soil test recommendations.
*Repair damaged, bare, or sparse areas by filling any gullies, re-
fertilizing, over- or re- seeding, and mulching.
*If plant cover is sparse or patchy, review the plant materials
chosen, soil fertility, moisture condition, and mulching; then repair
the affected area either by over - seeding or by re- seeding and
mulching after re- preparing the seedbed.
*If vegetation fails to grow, consider soil testing to determine
acidity or nutrient deficiency problems. (contact your SWCD or
Cooperative Extension office for assistance.)
*If additional fertilization is needed to get a satisfactory stand, do
so according to soil test recommendations.
Maintenance
Storm *Inspect after storm events to check for movement of mulch or for
erosion.
*If washout, breakage, or erosion is present, repair the surface,
then re -seed, re -mulch and, if applicable, install new netting.
*Continue inspections until vegetation is firmly established.
Maintenance
Blankets *During vegetative establishment, inspect after storm events for
any erosion below the blanket.
*If any area shows erosion, pull back that portion of the blanket
covering it, add soil, re -seed the area, and re -lay and staple the
blanket.
After vegetative establishment, check the treated area periodically.
METES /23899
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:
FARM FIELD
POTENTIAL AREAS WHERE STORM WATER MAY ENTER
GROUND WATER: LAKES
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. IF THERE ARE LARGE EXPOSED AREAS ON OR NEAR SLOPES A SILT FENCE
MAY BE REQUIRED
5. AFTER FINAL GRADING, SEED OR SOD THE YARD AS SOON AS POSSIBLE
6. 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.
C350 C -TRM = COMPLETE EROSION CONTROL
AND VEGETATION REINFORCEMENT
C350 = ENHANCED TEMPORARY EROSION CONTROL
Unlike 100% synthetic TRMs, the C350's permanent structure is incorporated with natural
coconut fibers to enhance the matting's immediate to long -term erosion control and
vegetation establishment capabilities. The coconut fibers last approximately three years
to help absorb the erosive forces of rainfall and channel flow prior to vegetation
establishment, while retaining soil, seed and moisture to promote vegetation growth.
Before vegetation establishment, many 100% synthetic TRMs are prone to floating when
submerged, often requiring manual soil filling and /or increased stapling during installation
to maintain adequate mat -to -soil contact under runoff and channel flow. The C350's
coconut fiber matrix, forming prominent ridges across the width of the mat, absorbs
n captures sediment in runoff to ensure matting conformance and achieve
water and p g
adherence with the underlying soil, even when completely submerged. The result is
imr roved erosion protection for the uninhibited development of permanently reinforced
vegetation.
C350 = EFFECTIVE PERMANENT VEGETATION REINFORCEMENT
The C350's permanent UV stabilized matting structure consists of a high strength
bottom netting, a super high strength, corrugated middle netting and a high strength
top netting mechanically bonded together to form a three - dimensional matrix for
reinforcing newly developed and fully matured vegetation. This permanent matting
structure boasts significantly higher tensile strengths and thickness - the two properties
considered necessary for turf reinforcement - than most 100% synthetic TRMs. In fact,
no other TRM on the market has proven greater turf reinforcement capabilities.
Furthermore, longevity studies have shown that the C350's permanent matting structure,
even after almost 5 years of field use, maintains nearly all of its original tensile strength
and thickness. Hence, the C350's unsurpassed vegetation reinforcement capabilities can
be counted on for a long, long time.
S /18465SR1/LEGAL
JUNE 9, 2000
6
6'
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250
3'
225
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A
B
X
x x
1 STAPLE
1 -1/2 STAPLES
PER SO. YD.
PER SQ. YD.
2 STAPLES
PER SO. YD.
2'
4 -« x
x
x x x
x xDx
X x x
3.5 STAPLES
PER SO. YD.
20'
B
725
C
250
STAPLE PATTERNS APPLY TO ALL NORTH AMERICAN
225
GREEN EROSION CONTROL BLANKETS. STAPLE
200
PATTERNS WILL VARY DEPENDING UPON SLOPE
175
LENGTH, SLOPE GRADE, SOIL TYPE AND AVERAGE
8.00 Ibs /ft
(384 Pa)
ANNUAL RAINFALL.
150
W tea
X
100
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75
0
50
25
FT
2 STAPLES
PER SO. YD.
2'
4 -« x
x
x x x
x xDx
X x x
3.5 STAPLES
PER SO. YD.
20'
B
C
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4:1 act 21 1:1 RM nm
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SLOPE GRADIENT SHOREINE
EROSION CONTROL BLANKET
STAPLE PATTERN t, ODE
SEASONAL SOIL PROTEC110N CHART
STABIUZA11ON
PRACTICE JAN. FEB. MAR. APR. MAY JUN. JUL. AUG. SEPT. OCT. NOV. DEC.
PERMANENT
SEEDING A *1111///////* *///>
-----------------------
DORMANT B B - -�
SEEDING
SEEDING - - - - - -- E_- _� - - - - --
SODDING - - F * *- - - - *1111111111/111* - 1 - - - -
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 201bs > /AC.
B - KENTUCKY BLUE GRASS 60 lbs. /AC.: CREEPING RED FESCUE 60 lbs. /AC.:
PLUS 2 TONS STRAW MULCH /AC. OR ADD ANNUAL RYEGRASS 301bs > /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
WOOD STAKES 15e -20"
IN GROUND
MAXIMUM PERMISSIBLE SHEAR STRESS
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SHORT DURATION
LONG DURATION
PHASE 1
3.20 Ibs /ft
(153 Pa)
2.25 Ibs /ft
(108 Pa)
PHASE 2
6.00 Ibs /ft
(288 Pa)
4.50 Ibs /ft
(216 Pa)
PHASE 3
8.00 Ibs /ft
(384 Pa)
6.00 Ibs /ft
(384 Pa)
FENCE POST
x;
FENCE POST SHOULD J
BE BURIED xl' BELOW
GROUND SURFACE.
ANGLE FIRST STAKE
TOWARD PREVIOUSLY
LAID BALE
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STRAW BALE DAM DETAIL
NOT -TO -SCALE
CHINK GAPS
W /STRAW
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SECTION
�1
SILT FENCE 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
upslops 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, and remove any
accumulated sediments after every storm.
3 & (min.)
Gap between bags
acts as a spillway
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GROUND SURFACE
E MATERIAL SHOULD
BE BURIED 6' BELOW GROUND
SURFACE.
Runoff ✓_
Runoff
CURB INLET PROTECTION DETAIL
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SHEET NO.
7
OF 21 sHEETs
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NO-40605