HomeMy WebLinkAbout3211721440038-10012014S E D I M E N T C 0 N T R 0 L P R A C T I C E S
1. Implement sediment control practices in order to minimize sediment from
entering surface waters, including curb and gutter systems and storm drain
inlets.
2. Install all temporary or permanent sediment control measures including silt
fence at perimeter of construction, bio -logs at driveway, sediment filters, silt
sacks, and sedimentation basins 91igL to beginning site clearing, grading, or
other land -disturbing activity. Protect all storm sewer inlets that receive
runoff from disturbed areas.
3. Establish sediment control practices on all down gradient perimeters before
any up gradient land disturbing activities begin. These practices must remain
in place until final stabilization has been established.
4. The timing of the installation of sediment control practices may be adjusted
in order to accommodate short-term activities, but sediment control practices
must be installed before the next precipitation event even if the short-term
activity is not complete.
5. If the down gradient treatment system becomes overloaded, install additional
up gradient sediment control practices or redundant BMPs in order to
eliminate the overloading.
6. Before beginning construction, install a TEMPORARY ROCK CONSTRUCTION
ENTRANCE at each point where vehicles exit the construction site. Use 25
mm (1 inch) to 50 mm (2 inch) diameter rock, MNDOT Standard
Specification 3137 CA -1, CA -2, CA -3, or equal Coarse Aggregate. Place the
aggregate in a layer at least 152 mm (6 inches) thick across the entire
width of the entrance. Extend the rock entrance at least 15 m (50 feet)
into the construction zone. Use a MNDOT Standard Specification 3733 Type
V permeable geotextile fabric material beneath the aggregate in order to
prevent migration of soil into the rock from below. Maintain the entrance in
a condition that will prevent tracking or flowing of sediment onto paved
roadways. Provide periodic top dressing with additional stone as required.
Close entrances not protected by temporary rock construction entrances to all
construction traffic.
7. If necessary, clean the wheels of construction vehicles in order to remove
soils before the vehicles leave the construction site. Wash vehicles only on
an area stabilized with stone that drains into an approved sediment trapping
device.
8. Remove all soils and sediments tracked or otherwise deposited onto adjacent
property, pavement areas, sidewalks, streets, and alleys. Removal shall be
on a Sj9.4 basis throughout the duration of the construction. Clean paved
roadways by shoveling, wet -sweeping, or dry sweeping. If necessary, scrape
paved surfaces in order to loosen compacted sediment material prior to
sweeping. Haul sediment material to a suitable disposal area. Street
washing is allowed only after sediment has been removed by shoveling or
sweeping.
9. Soil Stockpiles: Install siltfence or other effective sediment controls around
all temporary soil stockpiles. Locate soil or dirt stockpiles such that the
downslope drainage length is no less than 8 m (25 feet) from the toe of
the pile to a surface w -:ter, including stormwater conveyances such as curb
and gutter systems, or conduits and ditches unless there is a bypass in
place for the stormwater. If remaining for more than 7 days, stabilize the
stockpiles by mulching, vegetative cover, tarps, or other means. During
street repair, cover construction soil or dirt stockpiles located closer than 8
m (25 feet) to a roadway or drainage channel with torps, and protect storm
sewer inlets with silt sacks or staked siltfence.
10. Silt Fence: Install silt fence along the contour (on a level horizontal plane)
with the ends turned up (J -hooks) in order to help pond water behind the
fence. Install the silt fence on the uphill side of the support posts. Provide
a post spacing of 1.2 m (4 feet) or less. Drive posts at least 0.6 m (2
feet) into the ground. Anchor the silt fence fabric in a trench at least 152
mm (6 inches) deep and 152 mm (6 inches) wide dug on the upslope side
of the support posts. Lay the fabric in the trench and then backfill and
compact with a vibratory plate compactor. Make any splices in the fabric at
a fence post. At splices, overlap the fabric at least 152 mm (6 inches),
fold it over, and securely fasten it to the fence post. Silt fence supporting
posts shall be 51 mm (2 inch) square or larger hardwood, pine, or standard
T- or U -section steel posts. T- or U -section steel posts shall weigh not
less than 1.8602 kg per meter (1.25 Ib per lineal foot). Posts shall have a
minimum length of 1524 mm (5 feet). Posts shall have projections to
facilitate fastening the fabric and prevent slippage. Geotextile fabric shall
meet the requirements of MNDOT Standard Specification 3886 for
preassembled silt fence, furnished in a continuous roll in order to avoid
splices. Geotextile fabric shall be uniform in texture and appearance and
have no defects, flaws, or tears. The fabric shall contain sufficient ultraviolet
(UV) ray inhibitor and stabilizers to provide a minimum two-year service life
outdoors. Fabric color shall be international orange.
11. Maintain all temporary erosion and sediment control devices in place until the
contributing drainage area has been stabilized (hard -surfaced areas paved
and vegetation established in greenspace). Repair any rilling, gully formation,
or washouts. After final establishment of permanent stabilization, remove all
temporary synthetic, structural, and nonbiodegradable erosion and sediment
control devices and any accumulated sediments. Dispose -of off site.
Restore permanent sedimentation basins to their design condition immediately
following stabilization of the site.
12. If dewatering is required and sump pumps are used, all pumped water must
be discharged through a sediment control device such as a dewatering bag
or other appropriate facility prior to leaving the construction site. Proper
energy dissipation must be provided at the outlet of the pump system.
I N S P E C T 1 0 N S A N D M A I N T E N A N C E:
1. Inspect the entire construction site at least once every 7 days during
active construction and within 24 hours after a rainfall event greater than
0.5 inches in a 24-hour period. Following an inspection that occurs
within 24 hours after a rainfall event, the next inspection must be
conducted within 7 days after that rainfall event.
2. Inspect all erosion prevention and sediment control BMPs, infiltration
areas, and stabilized areas.
3. Record all inspections and maintenance conducted during construction in
writing and keep these records. The inspections and maintenance records
must include date and time of inspections, date and amount of all
rainfall events greater than 0.5 inches in a 24-hour period, name of
persons(s) conducting inspections, findings of inspections,
recommendations for corrective actions, and any corrective actions taken.
4. Inspect all erosion prevention and sediment control BMPs in order to
ensure integrity and effectiveness. Repair, replace, or supplement any
nonfunctional BMPs with functional BMPs within 24 hours after discovery,
or as soon as field conditions allow access unless another time frame is
specified.
5. Remove accumulated sediment deposits from behind erosion and sediment
control devices as needed. Do not allow sediment to accumulate to a
depth of more than one-third of the height of the erosion and sediment
control devices. Repair, replace, or supplement deteriorated, damaged,
rotted, or missing erosion control devices within 24 hours of discovery, or
as soon as field conditions allow access.
6. Repair, replace, or supplement all silt fences when they become
nonfunctional or the sediment reaches 1/3 of the height of the fence.
These repairs must be made within 24 hours of discovery, or as soon as
field conditions allow access.
7. Clean sedimentation basins, storm sewer catch basins, ditches, and other
drainage facilities as required in order to maintain their effectiveness.
Temporary and permanent sedimentation basins must be drained and the
sediment removed when the depth of sediment collected in the basin
reaches 1/2 of the storage volume. Drainage and removal must be
completed within 72 hours, or as soon as field conditions allow access.
8. Inspect surface waters (including drainage ditches and conveyance
systems) evidence of erosion and sediment deposition. Remove all deltas
and sediment deposited. Stabilize areas where sediment removal results
in exposed soil. Removal and stabilization must be completed within 7
days of discovery unless precluded by legal, regulatory, or physical access
constraints. If precluded, removal and stabilization must take place within
7 days of obtaining access.
9. Inspect construction site vehicle exit locations for evidence of off-site
sediment tracking onto paved surfaces. Remove all soils and sediments
tracked or otherwise deposited onto adjacent property, pavement areas,
sidewalks, streets, and alleys. Removal shall be on a daily basis
throughout the duration of the construction. Clean paved roadways by
shoveling or wet -sweeping. Do not dry sweep. If necessary, scrape
paved surfaces in order to loosen compacted sediment material prior to
sweeping. Haul sediment material to a suitable disposal area. Street
washing is allowed only after sediment has been removed by shoveling or
sweeping.
10. Perform any corrective measures ordered by the City or Watershed District
within 24 hours of notification. Install any additional erosion protection
or sediment control measures deemed necessary by the City or Watershed
District within 24 hours of notification.
M A T E R I A L S:
1. Storm Sewer Inlet Protection: The following are approved inlet sediment control devices:
a. Road Drain Top Slab Model RD 23 (fits rough opening for 2'x3' inlet), Road Drain Top
Slab Model RD 27 (fits rough opening for 27" inlet), or Road Drain Top Slab Model CG
3067 (fits Neenah Casting with 35-1/4"07-3/4" dimensions) manufactured by WIMCO,
799 Theis Drive, Shakopee, MN, 55379, Phone (952) 233-3055.
b. Silt Sack: Regular flow (40 gal/min/sq. ft). Average width strength equal to 165.0
lbs/in, ASTM D-4884. Rectangular siltsack on rectangular inlets. Round siltsack on round
inlets. Use ACF Environmental, Inc., 2831 Cardwell Road, Richmond, VA 23234, Phone
(800) 448-3636, or approved equal.
c. InfraSafe Sediment Control Barrier. Install geotextile sock on the outside of the barrier in
order to trap additional fines. Standard frames are available to fit 24" to 30" diameter
and 2'x3' openings. Distributed by ROYAL ENTERPRISES AMERICA, 30622 Forest Boulevard,
Stacy, MN, 55079, Phone (651) 462-2130.
2. Topsoil: Topsoil used for finish grading of areas to be turfed or planted shall meet the
requirements of MNDOT Standard Specification 3877 for topsoil borrow modified to contain no
more than 35% sand. Topsoil shall be reasonably free of subsoil, heavy clay, coarse sand,
stones, and other objects over 51 mm (2 inches) in diameter; and without plants, roots,
sticks, and other objectionable material.
3. Geotextile Fabric for Subgrode Stabilization (if required): MNDOT Standard Specification 3733
Type V permeable geotextile material.
4. Supporting Posts for Siltfence: 51 mm (2 inch) square or larger hardwood, pine, or standard
T- or U -section steel posts. T- or U -section steel posts shall weigh not less than 1.8602
kg per meter (1.25 Ib per lineal foot). Posts shall have a minimum length of 1524 mm (5
feet). Posts shall have projections to facilitate fastening the fabric and prevent slippage.
ce Fabric:Specification 3886 self su supporting silt fence. Furnish in a
5. Siltfen MNDOT Standard pp g
continuous roll in order to avoid splices. Geotextile fabric shall be uniform in texture and
appearance and have no defects, flaws, or tears. The fabric shall contain sufficient ultraviolet
(UV) ray inhibitor and stabilizers to provide a minimum two-year service life outdoors. Fabric
color shall be international orange.
6. Aggregate for Temporary Rock Construction Entrance: 25 mm (1 inch) to 50 mm (2 inch)
diameter rock, MNDOT Standard Specification 3137 CA -1, CA -2, or CA -3 Coarse Aggregate, or
equal.
7. Geotextile Fabric for Temporay_Rock Construction Entrance: MNDOT Standard Specification 3733
Type V permeable geotextile fabric material.
8. Aggregate for Block and Rock Sediment Filter: 25 mm (1 inch) to 50 mm (2 inch) diameter
rock, MNDOT Standard Specification 3137 CA -1, CA -2, or CA -3 Coarse Aggregate, or equal.
9. Block and Rock Inlet Filters: Block and Rock Inlet Filters consist of open -core concrete
masonry blocks, wire screen with 12 mm (0.5 inch) openings, and washed rock. Place
open -core concrete masonry blocks lengthwise on their sides around the catchbasin inlet.
Place wire screen around the perimeter to the top of the block barrier before the rock is
placed. The screen acts to prevent the rocks from being washed through the blocks. Place
rock against the wire mesh to the top of the blocks. Use 25 mm (1 inch) to 50 mm (2
inch) diameter rock, MNDOT Standard Specification 3137 CA -1, CA -2, CA -3, or equal Coarse
Aggregate. Install two courses of 8" blocks in order to form a barrier height of 16".
10. Biodegradable Erosion Control Blankets: In accordance with MNDOT Standard Specification 3885.
11. Erosion Control Matting: LandLok TRM 450 Turf Reinforcement Mat manufactured by Propex, Inc.
(www.goeotextile.com), or approved equal soil erosion control matting.
12. Staples Staples used to anchor erosion control blankets shall be U-shaped, 3 mm diameter
or heavier steel wire. The span width at the crown shall be a minimum of 25 mm (1 inch).
Staples shall have a length of 250 mm (10 inches) or more from top to bottom after
bending.
E R 0 S 1 0 N P R E V E N T 1 0 N P R A C T I C E S:
1. Delineate the location of areas not to be disturbed (e.g. with flags, stakes, signs, silt fence,
etc.) on the development site before work begins.
2. Avoid removal of trees and surface vegetation wherever possible. Schedule construction in
order to expose the smallest practical area of soil at any given time. Implement appropriate
construction phasing, vegetative buffer strips, horizontal slope grading, and other construction
practices that minimize erosion.
3. Following initial soil disturbance or redisturbance, complete permanent or temporary stabilization
against erosion due to rain, wind, and running water as soon as possible, but in no case
later than 14 calendar days, on all disturbed or graded areas including stormwater
management pond sideslopes. This requirement does not apply to those areas that are
currently being used for material storage or for those areas on which grading, site building, or
other construction activities are actively underway.
4. Provide temporary grass seed cover on all topsoil stockpiles and other areas of stockpiled
excavated material in order to prevent soil erosion and rapid runoff during the construction
period. Prolonged periods of open, bare earth without grass cover will not be permitted.
Stabilize all disturbed greenspace areas with a minimum of 4" topsoil immediately after final
subgrade completion. Seed and mulch, or sod and stake these areas within 48 hours after
completion of final grading work (weather permitting).
5. Stabilize all disturbed areas to be paved using early application of gravel base.
6. Apply necessary moisture to the construction area in order to prevent the spread of dust.
INDIVIDUAL RESPONSIBLE FOR THE CLEANLINESS OF
THE SITE AND THE MAINTENANCE OF THE EROSION
AND SEDIMENT CONTROLS:
MATT COOKE
OSLO BUILDERS
6844 POINT DRIVE
EDINA, MN 55345
PHONE: 612-836-0386
EMAIL: mattOoslobuilders.com
K EY:
-.� EXISTING RUNOFF FLOW DIRECTION
► PROPOSED RUNOFF FLOW DIRECTION
------- EXISTING CONTOUR
PROPOSED CONTOUR
20.69 PROPOSED SPOT MWATOr
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a
QEDIIEKTILE FAM
MATERIAL BENEATH
THE ROCK
24 -OM HIGH CUT -W DICE
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WASHED ROCK. MNDOT
SIDWIDARID OR IM
7 CA-1UAL 1,
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12 FOOT
mooM I
WIDTH
CONSTRUCTION SEQUENCE
1
Delineate the location of areas not to be disturbed (e.g. with flags,
stakes, signs, silt fence, etc.) before work begins.
2
Establish sediment control practices on all down gradient perimeters
before any up gradient land disturbing activities begin. These practices
shall remain in place until final stabilization has been established.
3
Install all perimeter sediment control devices and construction entrances.
The timing of the installation of sediment control practices may be
adjusted in order to accommodate short-term activities, but sediment
control practices must be installed before the next precipitation event
even if the short-term activity is not complete.
4
Contact the City for approval of the sediment control devices.
5
Rough grade the site.
6
Install utilities.
7
Install pavements.
lawn and landscape.
Restore all disturbed areas.
N12Install
Clean all storm sewer and conveyance systems.
After all disturbed areas are stabilized, obtain approval from the City
and/or Watershed District.
Remove all temporary sediment control devices.
" WATER, SERVICE ' .. SEWER SERVICE
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PROTECTION ON ALL CATCH 918.26 d 45•
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RLS 9235 L= 8.00 &R " Oa '.0•' SOUTH RIGHT-OF-WAY FOUND 1/2"
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P 0 L L U T 1 0 N P R E V E N T 1 0 N M E A S U R E S O
1. Solid Waste: Dispose of collected sediment, asphalt and concrete millings, floating debris,
paper, plastic, fabric, construction and demolition debris, and other wastes properly off-site
in compliance with Minnesota Pollution Control Agency requirements.
EAST LINE
2. Hazardous Materials: Properly store oil, gasoline, paint and any hazardous substances in OF LOT I
order to prevent spills, leaks or other discharge. Include secondary containment. Restrict
access to storage areas in order to prevent vandalism. Storage and disposal of hazardous
materials must be in compliance with MPCA regulations.
3. Other Materials: Dispose of unused building materials, garbage, trash, cleaning wastes, r,0
toxic materials, and wastewater properly off-site and in compliance with Minnesota Pollution
Control Agency disposal requirements.
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4. Furnish suitable trash containers and regularly remove the accumulated trash from the ° PR
premises. X917.57
5. Do not allow solid waste, hazardous materials, and other materials shall to be carried by �c
runoff into a receiving water or storm sewer system. g
6. Limit external washing of trucks and other construction vehicles to a defined area of the a
site. Wash vehicles only on an area stabilized with stone that drains into an approved m
sediment trapping device. Contain runoff and properly dispose of waste. Engine g
degreasing is prohibited.
7. Concrete Washout Operations: Contain all liquid and solid wastes generated by concrete
washout operations in a leak -proof containment facility or impermeable liner. Do not allow i
the liquid and solid wastes to contact the ground. Prevent runoff from the concrete ADJACENT RESIDENCE (6101 WESTRIDGE B a
washout operations or areas. Dispose of liquid and solid wastes properly in compliance TOP OF FOUNDATION ELEV, ±915.8
with Minnesota Pollution Control Agency regulations. Install a sin adjacent to each EXISTING FRONT SETBACK FROM HIGHLAND
9 Y 9 9 1 ROAD IS APPROXIMATELY 2$.6 FEET 5.00
washout facility in order to inform concrete equipment operators to utilize the proper /
facilities.
�_� 42.61
8. Sanitary and Septic Waste: Furnish and install detached portable toilet facilities at the
construction site. The portable toilets shall be conveniently located for the use of all
workers on the project. Maintain the facilities in a clean, dry, sanitary condition in
accordance with Minnesota Department of Health requirements. NOTE. ADJACENT RESIDENCE LIES
OFF THE PAPER SPACE OF THIS
The subsurface utility information shown on this plan is utility
Quality Level D. This quality level was determined according to
the guidelines of CI/ASCE 38-02, entitled "Standard Guideline
for the Collection and Depiction of Existing Subsurface Utility
Data."
DRAWING. A BUILDING TIE TO
THE PROPERTY LINE IS SHOWN PP
TO ACKNOWLEDGE ITS LOCATION. l
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5517 HIGHLAND
ROAD
EDINA, MN
DATE REVISION
I HEREBY CERTIFY THAT THIS PLAN,
SPECIFICATION, OR REPORT WAS PREPARED
BY ME OR UNDER MY DIRECT SUPERVISION
AND THAT I AM A DULY LICENSED
PROFESSIONAL ENGINEER UNDER THE LAWS
OF THE STATE OF MINNESOTA.
Brian Mundstock
DATE: REG. NO.: 23468
INFORMATION:
PROJECT NO.: 14-577
DRAWN BY: mtw
CHECKED BY: bhm
APPROVED BY: bhm
SCALE: graphic
DATE:
DESCRIPTION:
STORMWATER
AND
EROSION CONTROL
PLAN
SHEET NO:
ST1
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