North Dakota Water May 2005

• Year: 2005
• Title: North Dakota Water
• Author: North Dakota Water
• Description: May 2005
• Publications - Doc Type: Other

sewer without first checking local
regulations.
Temporary Cover
Temporary cover is used to reduce
erosion and should be applied
immediately to:
-Areas where construction activity
has ceased and will not resume
within 21 days.
-Areas with a continuous slope
within 200 feet of any surface
water.
-Temporary stockpiles such as
topsoil and clay. Clean aggregate,
demolished concrete and sand
stockpiles are exempt.
Temporary cover may be obtained
by planting fast - growing plants like
rye, oats or winter wheat, spreading
straw or wood chips, or installing
wood fiber blankets or erosion netting
over the area.
Permanent Cover
Permanent cover is any type of
cover that will not likely be disturbed
again by construction activities.
Permanent soil stabilization includes
planting grass seed, spreading mulch
and laying sod. Gravel, asphalt, or
concrete areas are also considered
permanent cover.
During construction activity,
parking areas, staging areas, and
areas immediately surrounding
the building site should not be
permanently seeded. If construction
is occurring nearby, access to areas
that have been permanently seeded
should be restricted to allow the
cover to grow.
Stockpiled Material
Materials typically stockpiled at
a construction site include gravel,
sand, excavated soil, topsoil, and
other similar materials. These piles
should never be placed in stormwater
drainage ways (e.g., curb and gutter,
drainage ditch) overnight or over
the weekend. Stockpiles should
not remain in drainage ways if
inclement weather is approaching.
An appropriate erosion control
North Dakota Water ■ May 2005
device should be in place between
any stockpile and any storm water
drainage with only a minimal amount
of material stockpiled directly against
any device.
Waste Disposal
All construction debris must be
placed in appropriate containers to
prevent it from being carried away
from the site by wind or water. All
debris should be properly disposed of
at an appropriate facility.
All liquid or soluble materials (e.g.,
oil, paint) should be properly stored
to prevent spills, leaks or discharges.
Access to storage areas must be
restricted to prevent vandalism.
Storage and disposal of hazardous
waste must be in compliance with
applicable regulations.
Concrete Wash Water
Concrete wash water must never
be allowed to drain to adjacent
properties, storm sewers or waters of
the state. Wash water disposal must be
limited to an area designated by the
developer and sufficient to contain the
wash water and residual cement.
Inspections and Maintenance
All sediment and erosion control
devices should be inspected every 14
calendar days and within 24 hours
after any storm event producing more
than one -half inch of rain in a 24 -hour
period.
All sediment should be cleaned
off of streets, and all debris that has
been deposited off site by wind or
water should be picked up and
disposed of properly.
Sediment control devices
(e.g., silt fences) should be
cleaned out once the amount
of accumulated sediment is
one -third of the exposed height
of the device. If the device is
not functioning properly, it
should be repaired or replaced.
Sediment removal or repair/
replacement of any device
should be done within 24 hours
of discovery or as soon as field
conditions allow access.
Sediment traps/basins should
be cleaned out once the amount of
accumulated sediment has reduced
the storage volume of the trap/basin
by half. Drainage and removal of
sediment must be done within 72
hours of discovery or as soon as field
conditions allow access.
Soil or sediment that has been
deposited or tracked onto any street
should be removed within 48 hours.
Removal may need to occur sooner
if specified by local authorities or
if there is a public safety hazard or
nuisance.
Removal of Sediment and
Erosion Controls
If a sediment and erosion control
device is accidently removed during
construction, the device must
be replaced immediately. If any
construction activity occurs in the area
of the device, it may be removed but
must be replaced once the activity has
ceased.
Sediment and erosion control
devices must be maintained until
70 percent of preexisting vegetative
coverage has been achieved on all
pervious surface areas, such as lawns
that are located upslope from the
device.
For more information on erosion
and sediment control during home
construction, contact the North
Dakota Department of Health at 701-
328 -5210, or visit the website www.
health. state.nd.us/wq.
Sediment traps allow sediment to settle out of
runofffrom construction sites.
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