HomeMy WebLinkAbout1802824410062-09082015 (2)%
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PROPOSED CONDITIONS
Sediment Control Practices:
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 prior 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_cigtw gradlen 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 mmm (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 addition 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 daily 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 silt fence or other effective sediment controls around all temporary soil stockpiles. Locate soil or dirt stockpiles such
that the down slope drainage length is no less than 8 m (25 feet) from the toe of the pile to a surface water, 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 tarps, 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. 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 post shall not weigh 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 be uniform in texture and appearance and have no defects, flaws, or tears. The fabric shall contain sufficient
ultraviolet (UV) ray inhibitory and stabilizers to provide a minimum two-year service life outdoors. Fabric color shall be international
orange.
11. Tree Protection Fence: Before any construction or grading of project is to occur, a tree protection fence shall be installed around the
drip line of significant trees to be preserved. This fence must remain in place until all grading and construction activity is terminated.
12. 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 erosion and sediment control devices and any accumulated sediments. Dispose- of offsite. Restore permanent
sedimentation basins to their design condition immediately following stabilization of the site.
13. 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.
Inspections and Maintenance:
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 even, 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
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PERMIT #
Storm water, Sediment, and Erosion Control Contact:
Mark Miller
MJ Miller Construction
Phone 612-532-9675
Email mark@mjmillerconstruction.com
Construction Sequencing
1. Delineate the location of areas not to be disturbed 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
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. 10. Clean all storm sewer and conveyance systems.
8. Install lawn and landscape. 11. After all disturbed areas are stabilized,
obtain approval from the City and/or Watershed District.
9. Restore all disturbed areas.
12. Remove all temporary sediment control devices.
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 Y2 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 with 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 roved 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.
Materials:
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 a 2'x3' inlet), Road Drain Top Slab Model RD 27 (fits rough opening for a 27"
inlet), or Road Drain Top Slab Model CG 3067 (fits Neenah Casting with 35-1/4"x17-3/4" 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, 55073, Phone (651) 462-2130.
2. Topsoil: Topsoil used for finish grading 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 Subgrade 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.
S. Siltfence Fabric: MNDOT Standard Specification 3886 self-supporting silt fence. Furnish 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 shall be international orange
6. Aggregate for Temporary Rock Construction Entrance: 25 mm (1 inch) to 50 mm (2 inch) diameter rock, MDOT Standard Specification
3137 CA -1, CA -2, or CA -3 Coarse Aggregate, or equal.
7. Geotextile Fabric for Temporary 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, MDOT 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".
ROCK BERM ENTRANCE
HARD SURFACE
/PUBLIC ROAD
WIRE MESH REINFORCING (opww&)
GEOTEXTS.E FABRIC
= STEEL POST AT 8' O.C.
C4 FABRIC ANCHORAGE Tf�NCH,
BACKFILL NTH TAMPED NATURAL SOIL
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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.
Erosion Prevention Practices:
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 or will be underway at the discretion of
the Contractor.
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
unless there are or will be construction activities at the discretion of the Contractor. 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.
Pollution Prevention Measures:
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.
2. Hazardous Materials: Properly store oil, gasoline, paint and any other hazardous substances in 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, toxic materials, and wastewater properly off-site
and in compliance with Minnesota Pollution Control Agency disposal requirements.
4. Furnish suitable trash containers and regularly remove the accumulate trash from the premises.
S. Do not allow solid waste, hazardous materials, and other materials shall to be carried by runoff into a receiving water or storm sewer
system.
6. Limit external washing of trucks and other construction vehicles to a defined area of the site. Wash vehicles only on an area stabilized
with stone that drains into an approved sediment trapping device. Contain runoff and properly dispose of waste. Engine degreasing is
prohibited.
7. Concrete Washout Operations: Contain all liquid and solid wastes generated by concrete washout operations in a ieak-proof containment
facility or impermeable liner. Do not allow the liquid and solid wastes to contact the ground. Prevent runoff from the concrete washout
operations or areas. Dispose of liquid and solid wastes properly in compliance with Minnesota Pollution Control Agency regulations. Install
a sign adjacent to each washout facility in order to inform concrete equipment operators to utilize the proper facilities.
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.
NOR 1
Bearings are based on the Hennepin County
Coordinate System (NAD 83 -1986 adj.)
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SCALE IN FEET
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Project:
5132 Gorgas
Ave
Project Location:
Edina, Minnesota
Client:
MJ Miller Construction
1014 Prairie Ridge Lane
Lester Prairie, Minnesota
Consultant:
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Quality Control:
USE (INCLUDING COPYING, DISTRIBUTION. AND/OR CONVEYANCE OF INFORMATION)
OF THIS PRODUCT IS STRICTLY PROHIBITED WITHOUT SATHRE-9ERGCUI6T, INC.'s
EXPRESS WRITTEN AUTHORIZATION. USE WITHOUT SAID AUTHORIZATION
CONSTITUTES AN ILLEGITIMATE USE AND SHALL THEREBY INDEMNIFY
SATHRE-SERGOUIST, INC. OF ALL RESPONSIBILITY. SATHRE-SERGOUIST, INC.
RESERVES THE RIGHT TO HOLD ANY ILLEGITIMATE USER OR PARTY LEGALLY
RESPONSIBLE FOR DAMAGES OR LOSSES RESULTING FROM ILLEGITIMATE USE.
Quality Assurance:
PM: DBP
Field Crew: CL
Drafter: RLS
Checked: DBP
Review Date: 1 3.30-15
Vicinity Map:
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Submittals:
3/31/2015 Drawinglssued
4/15/2015 Revision -Rear Grades and Walkout
Signature:
I Hereby Certify that this plan or specification was prepared by
me or under my direct supervision and that I am a duly registered
professional enginner under the laws of the State of Minnesota.
Dated this h day of April 2015.
Nathan R. Herman, PE Lic. No. 47982
Title:
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File No.: 59400-017
Sheet:
Sheet 2 of 2