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• Contractor shall control mud accumulation on all streets surrounding Project by installing a
temporary stone drive at all locations where construction traffic leaves the site. Dust shall
be kept to a minimum by utilizing water sprinkling, Calcium Chloride, vegetative cover, spray
on adhesives or other approved methods. Any dirt that gets on surrounding roads by
construction traffic shall be removed by Contractor
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• 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, Soil Conservation Service or Owner,
• Contractor shall insure that all sanitary sewers, storm sewers, subsurface drains, are
installed. Silt barriers shall be installed at all storm inlets (including street inlets), and all
drainage swales at 50 ft. intervals. Excavation Contractors shall fill top 6 inches of
trenches with topsoil if area is to be seeded.
• All disturbed areas shall be seeded and mulched as specified as soon as final grade is
established with erosion control seeding and /or permanent seeding as designated on Plan.
• Contractor shall maintain all temporary erosion control measures throughout the
construction phase of this Project and remove all temporary erosion and sediment controls
only when there is sufficient growth of ground cover to prevent further erosion.
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: ROSION CONTROL BLANKET
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Seasonal Soil Protection Chart
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wtice: Jan Feb. Mar. Apr. May June July Aug. Sept Oct Nov Dec
-rnanent
ading
Seeding
- - - -- -rig -- -' - - --
Temporary C D- -� -
Sodding
C
Mulching
A =: SEE PERMANENT SEEDING AT RIGHT
D = Kentucky Bluegrass 60 lbs/'acre' Creeping Rea{ Fescue 60
pit" 2 tons straw mulch /acre, or add Annual Ryegrass 30 Itrsj'nrre
C = Spring Dais 3 bushels /acre.
D = Wheat or Rye 2 bushels /acre.
E = Annual Ryegrass 40 lbs /acre. (1 lb /1000 sq ft.)
F = Sod
C = Straw Mulch 2 tots /acre.
• /I /' Irrigation needed during June, July, and /or September
•• Irrigation needed for 2 to 3 weeks after applying sod.
EROSION CONTROL BLANKET
Erosion control blanket shall be a machine- produced mat of 100% agncultur.0 straw
The blanket shall be of consistent thickness with the straw evenly distributer; ,er the entire
area of the mat. The blanket shall be covered on the top side with polypropylene getting having
an approximate 5/8" x 5/8" mesh, and on the bottom with a polypropylene letting with an
approximate 1 14" x 1 14" mesh. The blanket shall be sewn together with cotton *,hreac
Stl,:w erosion control blanket (or low velocity channel lining) shall be S75 is manufactured by
North American Green, or equivalent. Erosion control blanket or channel unrng ;nail nave the
following properties.
A Material Content
Straw ...- __ _- - 100°% (0 5 lb /sq yd) 10 27 kg /m2)
Netting .... Cne side lightweight photo degradable
1 i1b '1000 sq. ft approx. wt.)
One side heavyweight photo degradable
3 Ib. /1000 sa ft. approx wt.
Cotton
B Physical Specficauons Roil):
Width. - . __ _ _ _ 6.5 feet (2m)
Length. -... _ _-- 33.5 feet (25 4m)
Weight .. - _ _____ 30 lbs. - 10% (116 kg)
Area....... _ _-- .......... ... _60 sq. yds. (50m2)
SIte PreDaratlon
• Smooth grade and compact all areas to be covered with mat-
. Remove all rocks. dirt clods, grass clumps, trash and other obstructions that will lift mat from
ground surface.
Anchor Trenches
• The mat must be anchored at the upstream and downstream ends of the protected area and
intermittently in between.
• Excavate end trenches to a minimum of 12" deep and 6" wide before placing mat
• Dig intermittent check slots 6" deep by 6" wide transverse to mat at approximately 25'
intervals.
Seed And Fer lllzer
)eea and fertilizer snail be spread uniformly before mat installation Seed type, fertilizer type,
and rate of application shall comply with seeding specifications.
Mat Placement
` ')nroil mat flat side against the ground Unroll mat in direction parallel with direction of water
flow
Mat should lay flat. DO NOT PULL MAT TAUT over ground. Pulling mat taut may cause mat
to bridge depressions in the surface and allow erosion undemeath.
Beginning at up or downstream end, bury transverse terminal end of mat to secure and prevent
erosion `low underneath.
' Fold and secure mat snugly into all transverse check slots.
'
Backf ill and compact trenches and cnecK slots after staking the mat in bottom of trench. See
"Ground Fastening" below
Bury final terminal end as prescribed above.
,)verlap roll ends by 3' (min ) with upslope mat on top to prevent uplift of mat end by water
flow.
Overlap adjacent edges of mat by 3" (min.) and stake See "Ground Fasteninq'' beiow.
Ground Fastening
11eial p!ris or wood stakes are recommended for anchoring mat to the ground surface Metal
pins should be 3/16" diameter steel with 1 -1112" diameter steel washer secured at head of pin.
,lJood stakes snould be 1" x 3" nominal stock cut in a triangular shape StaKes should be 9" to
18" long depending on soil density. 1 _onger anchors are required for loose soils
Note that ground fasteners different from those mentioned here may function adequately. Care
must be taken to assure that fasteners hold mat securely at the surface and rave sufficient
ground penetration to resist pullout.
• Stake mat to ground on 3 tc 5 foot centers. Add extra stakes at depressions n ground surface
where mat bridges over to assure ground conformity
• Dnve wood stakes to within 3" of ground surface. Do not drive flush to surface Steel or
plastic pins should be driven flush to surface.
• in all transverse terminal trenches and check slots, stake each mat at its center and at
overlapped edges before backfilling and compacting.
• Stake overlaps longitudinally at 3' intervals.
SEEDING
1) Scope of Work
7o reestaolisn vegetative cover by seeding, either permanentitemporary or erosion control
types, as shown on the Plan. After finish grading, all construction areas are to be_ seeded_
(2) Permanent Seeding: March 1 to May 15 and August 10 to October 15. ,Dates may vary at
discretion of Landscape Architect depending on weather conditions.)
A Swales/Slooes Blended mixture of seed snail be applied at the rate ,f ' 10 pounds
per acre. The mixture shall consist of 40# Mustang turf-type T it Fescue, 309
3anff or Wabash Kentucky Bluegrass. 30# Fiesta Perennial Ryeqlass and 10#
Redtop Bentgrass
B Graded Area Adjacent to Pavement: Blended mixture of seed shall be applied at
the rate of 90 pounds per acre. The mixture shall consist of 354 Mustang turf-type
Tall Fescue. 30# Fiesta Perennial Ryegrass and 25# Banff or Wabash Kentucky
3luegrass
(3) Fertilizer Commercial analysis 12/12/12 applied at a rate of 600# /acre. Apply lime to
raise pH of soil to level needed for species being seeded. Work fertilizer and lime into the
soil to a depth of 2 -3 inches (pH factor snould be checked prior to seeding Lime should
not be required f ,opsoil is replaced.),
n) All Hydreseeding shall be in accordance with the preceding requirements
(5, Mulch Wood cellulose fiber may be used where application is made by hydraulic
muicning at the rate of one ton per acre. Straw mulch may be used and applied uniformly
in a continuous blanket at the rate of 2 tons per acre within 24 hours after seeding in
accordance with Section 621 of IDHSS
(6) Sediment Control _Fabric Fabric shall be of a non -woven construction composed of
pcivprcpylene and snali be ultraviolet stabilized.
7) If grading occurs during December. January, or February, dormant seeding procedures snail
be uses. it is imperative that all sediment filters and traps are in place prior to 'bulk
earth movinc or cleannc coerations commencing.
(3) During dry weather, keep iawns watered with spnnklers or other approved methods. Re-
seed any areas not germinating or damaged at , ntervals as may be required according to
seasonal condition Water grass and execute necessary weeding until acceptable and full
stand of grass has been obtained (Upon acceptance by the Owner the^wr.er shall
assume maintenance of the lawn areas
(10) All dates shown are nominal and may be vaned with concurrence of the Engineer.
Landscape Architect, Local Soil Conservationist or Owner.
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