HomeMy WebLinkAbout1.04 SWMP Complete
Article 4-203.E.16
Stormwater Management
Permit and Plan
Ursa Operating Company
Speakman A Booster
Compressor
OA Project No. 015-3104
U.S. Operations
1050 17th Street, Suite 2400
Denver, CO 80265
(720) 580-8350
Storm Water Management
Field Wide Plan
Battlement Mesa
Garfield County, Colorado
May / 2013 - Rev # 0
Table of Contents
1.0 INTRODUCTION .............................................................................................................................................. 1
1.1 STORM WATER RUNOFF PERMITTING REQUIREMENTS ........................................................................................................ 1
1.2 PROJECT DESCRIPTION AND BACKGROUND .......................................................................................................................... 2
1.3 PROJECT OWNER AND OPERATOR ........................................................................................................................................ 2
2.0 CONSTRUCTION SITE LOCATION DESCRIPTION ................................................................................... 3
2.1 SITE LOCATION ..................................................................................................................................................................... 3
2.2 SCHEDULE OF CONSTRUCTION ACTIVITIES ........................................................................................................................... 3
2.3 RUNOFF CHARACTERISTICS .................................................................................................................................................. 4
2.4 RECEIVING WATERS .............................................................................................................................................................. 6
2.5 NATIVE VEGETATION ............................................................................................................................................................ 6
3.0 POTENTIAL POLLUTION SOURCES ............................................................................................................. 7
4.0 DESCRIPTION OF SOIL CONTROL MEASURES ........................................................................................ 8
4.1 STRUCTURAL PRACTICES FOR EROSION AND SEDIMENT CONTROL ...................................................................................... 8
4.1.1 Straw Bale and Rock Check Dams ................................................................................................................................ 8
4.1.2 Straw Wattles/Straw Rolls ............................................................................................................................................. 8
4.1.3 Diversion Berm/Channel ............................................................................................................................................... 8
4.1.4 Culvert Inlet/Outlet Protection ...................................................................................................................................... 9
4.1.5 Sediment Basins ............................................................................................................................................................. 9
4.1.6 Armored Rundowns ....................................................................................................................................................... 9
4.1.7 Straw Bale Barriers ....................................................................................................................................................... 9
4.1.8 Water Bars .................................................................................................................................................................... 9
4.1.9 Tracking Pads ............................................................................................................................................................... 9
4.2 NON-STRUCTURAL PRACTICES FOR EROSION AND SEDIMENT CONTROL ................................................................................. 10
4.2.1 Vegetative Buffers ....................................................................................................................................................... 10
4.2.2 Seeding of Disturbed Areas ......................................................................................................................................... 10
4.2.3 Mulching ..................................................................................................................................................................... 10
4.2.4 Surface Roughening .................................................................................................................................................... 10
5.0 PHASED BMP IMPLEMENTATION .............................................................................................................. 11
5.1 CONSTRUCTION ................................................................................................................................................................... 11
5.2 INTERIM RECLAMATION ...................................................................................................................................................... 11
5.3 FINAL STABILIZATION ......................................................................................................................................................... 12
6.0 MATERIALS HANDLING AND SPILL PREVENTION ............................................................................... 13
6.1 WASTE MANAGEMENT AND DISPOSAL ................................................................................................................................ 13
6.2 Fuels and Materials Management .................................................................................................................................. 13
6.3 Construction Site Housekeeping ..................................................................................................................................... 15
7.0 DEDICATED CONCRETE OR ASPHALT BATCH PLANTS ..................................................................... 16
8.0 VEHICLE TRACKING CONTROLS ............................................................................................................... 17
9.0 INSPECTION AND MAINTENANCE PROCEDURES ................................................................................. 18
10.0 NON-STORMWATER DISCHARGES .......................................................................................................... 20
11.0 CERTIFICATIONS .......................................................................................................................................... 21
11.1 OWNER/APPLICANT CERTIFICATION ................................................................................................................................ 21
11.2 STORM WATER MANAGEMENT PLAN ADMINISTRATOR ................................................................................................... 22
12.0 ADDITIONAL BMP REFERENCES .............................................................................................................. 23
LIST OF APPENDICES
Appendix A Site Maps
Appendix B Storm Water Permit
Appendix C Storm Water Inspection Form
Appendix D BMP Descriptions and Installation Details
Appendix E Project Seed Mixes
Appendix F Site Specific Decriptions
Table 1 SWMP Revisions
1 May 2013
1.0 INTRODUCTION
This Storm Water Management Plan (SWMP) is written to comply with the Colorado
Department of Public Health and Environment’s (CDPHE) General Permit No. COR-
030000 issued on May 31, 2007 and has been administratively continued effective of July
1, 2012, and related U.S. Environmental Protection Agency (USEPA) National Pollutant
Discharge Elimination System (NPDES) storm water regulations. This larger common
plan of development SWMP addresses construction activities associated with
development of natural gas resources in the Battlement Mesa in Garfield County,
Colorado. The Battlement Mesa SWMP is intended to be periodically updated as needed
to address planned developments, new disturbances, and other changes needed to manage
storm water and protect surface water quality. This SWMP will be updated in accordance
with Parts I.D.5.c, d of the permit.
This SWMP is in two parts: (1) the field-wide SWMP for Ursa activities within the
Battlement Mesa project area; and (2) additional, dynamic, information (including
inspection forms) for well pads, compressor stations, and roads. The field-wide SWMP
includes a general area description, area boundary map, descriptions of Best Management
Practices (BMPs), description of materials handling and spill prevention, inspection,
maintenance procedures, and definition of final stabilization. Site-specific tables within
this field-wide SWMP Appendices address individual ground-disturbing activities. The
site-specific information found in Table 3 contains information such as facility location,
construction limits, BMP locations and detailed current site conditions. Additional
information on Ursa’s specifics of administrative operations is provided in the
appendices.
This SWMP will need to be updated/revised during the life of the project. Updates will
include:
1. Revision of existing BMPs as needed to address erosion and sediment control.
2. Deletion of BMPs and reduction in monitoring frequency for individual facility
locations where interim and long-term stabilization have been successfully
established.
3. Regulation updates, Table and Appendix revisions.
This SWMP will have a separate revision log sheet; this log sheet will have dates that the
SWMP was modified as applicable, refer to Table 2.
This SWMP is written to contain general storm water management practices, as well as
site specific information related to specific construction activities occurring in the
Battlement Mesa field area. Site specific information found in Table 1 includes phased
BMP implementation, areas of disturbance, schedule of construction activities, final
stabilization measures, current BMPs, and potential pollution sources.
1.1 Storm Water Runoff Permitting Requirements
The Federal Clean Water Act [Section 402(p)] requires that discharges of pollutants to
waters of the United States from any point source be regulated by NPDES permits. In
November 1990, the USEPA published final regulations that established application
requirements for storm water associated with construction activity for soil disturbances of
2 May 2013
5 acres or more be regulated as an industrial activity and covered by an NPDES permit.
In December 1999, the USEPA published final Phase II NPDES regulations that
established application requirements for storm water associated with construction activity
for soil disturbances to be regulated as an industrial activity and covered by an NPDES
permit. These regulations became effective July 1, 2002.
Storm water construction permits are required for oil and gas activities that disturb 1 or
more acres during the life of the project, or are part of a larger common plan of
development. CDPHE considers a common plan of oil and gas development to mean
development of several well pads and/or related infrastructure in a contiguous area either
during the same time period or under a consistent plan for long-term development.
1.2 Project Description and Background
Within the Battlement Mesa project area, Ursa Operating Company, LLC (Ursa) is
charged with construction, operation, and maintenance of access roads, well pads, and
gas gathering pipelines and facilities. Ursa is responsible for implementing storm water
management as it pertains to their respective operations within the Battlement Mesa
project area. This SWMP is developed, maintained, and implemented to suit the needs of
each construction activity within the Battlement Mesa project area.
The Battlement Mesa natural gas wells and associated infrastructure will be located
within Township 7 South, Range 95 West, of the 6th P.M. Construction activities will
include clearing/maintenance of drilling pads, clearing/maintenance of natural gas
facilities (compressor stations), construction/maintenance of access roads, and the
eventual construction of natural gas flow and gathering pipelines. The area of
disturbance including the natural gas well pads, the access roads and gathering system
pipeline will be greater than one acre.
Currently there are actively producing wells and natural gas facilities within the
Battlement Mesa project area. Refer to Table 1 for information regarding existing
facilities, proposed facilities, and facilities under construction. New disturbances will
occur as additional access roads and well pads are constructed and/or maintained.
1.3 Project Owner and Operator
The Project owner/operator:
Ursa Operating Company, LLC
1050 17th Street, Suite 2400
Denver, CO 80265
Contact for the project is:
• Robert W. Bleil, Regulatory & Environmental Manager/ SWMP Administrator
Main: 970.625.9922
E-mail: rbleil@ursaresources.com
Ursa will be in charge of all aspects of this project. Contractor(s) will do the actual
construction and grading, but all work will be supervised by Ursa or a representative(s),
and all decisions will be made by Ursa, or a representative(s).
3 May 2013
2.0 CONSTRUCTION SITE LOCATION DESCRIPTION
2.1 Site Location
The Battlement Mesa natural gas wells and associated infrastructure will be located
within Township 7 South, Range 95 West, of the 6th P.M. Once the natural gas wells are
completed and brought into production it will be necessary to construct flow lines,
gathering system pipelines and tank batteries to handle liquid storage, and construct
access roads to the individual well sites and pipelines access points.
The Battlement Mesa natural gas wells will be constructed using conventional cut and fill
earthmoving techniques. Typically, the working pad surface will have dimensions of
approximately 350’ x 250’. There will be a 50’ buffer area around the pad surface to
implement storm water BMPs. Specific pad dimensions may vary depending on the
planned drill rig, number of wells to be drilled from each pad, and local conditions.
After all well pads have been constructed and all production facilities have been installed,
the well pad will be graded to reduce cut and fill slopes and to minimize the overall size
of the pad. The well pad will be revegetated after grading activities have been
completed. This “interim reclamation” phase will exist until 70% stabilization (including
revegetation, compacted road surfaces, etc.) has been reached, after which “final
stabilization” will be declared. “Final stabilization” will require the 70% stabilization
and the removal of any temporary BMPs. The well pad will remain in the “final
stabilization” phase of the long-term production configuration for as much as 30 years or
more (typically, until the well’s production declines to sub-economic levels). After a well
has been plugged and abandoned and surface facilities removed, the well pad will be
graded to restore approximate pre-disturbance contours and will be revegetated.
In areas that are disturbed by well pad construction, topsoil will be stripped and
stockpiled near the site. Topsoil stockpiles will be seeded as soon as practicable to
preserve the topsoil resource. Soil materials will be managed so that erosion and
sediment transport are minimized.
Site Maps
Refer to Appendix A for maps showing locations of well pads, access roads, pipelines
and their associated storm water BMPs.
Maps will be generated for each applicable well pad showing construction site
boundaries, ground disturbance areas, cut and fill areas, all storage areas, all structural
and non-structural BMPs, and all potential pollution sources.
2.2 Schedule of Construction Activities
Construction schedules will vary. Minor road maintenance will occur on an “as needed”
basis. Refer to Table 1 for information regarding site specific construction and
maintenance activities for well pads and access roads.
Once an approved drilling permit application has been received from the Colorado Oil &
Gas Conservation Commission (COGCC), clearing and grading activities will be
performed at the well pad sites. The clearing and grading will be performed during
4 May 2013
daylight hours to prepare the site prior to drilling. Temporary storm water BMPs will be
implemented prior to well pad construction.
Once stabilization is achieved, defined as construction activities being complete and all
disturbed areas have been either built on, paved, or a uniform vegetative cover
established with a density of at least 70 percent of pre-disturbance levels, or equivalent
permanent, physical erosion reduction methods have been employed a well pad may be
removed from this SWMP.
However, if petroleum hydrocarbons or other chemicals impact storm water as a result of
industrial activities onsite, the impacted storm water will be addressed by following the
Ursa spill prevention control and countermeasures (SPCC) plan.
2.3 Runoff Characteristics
Runoff characteristics are based on site topography, soil type, and soil/vegetative cover.
According to the Natural Resource Conservation Service (NRCS), the project area of
Battlement Mesa consists of the following soils:
• Arvada loam, (6-20%): This deep, well drained, sloping soil is on fans and high
terraces. Elevation ranges from 5,100 to 6,200 feet. Average annual precipitation
is 12 inches. Average annual air temperature is about 48 degrees F and the
average frost free period is 120 days. Permeability is very slow and available
water capacity is high. The effective rooting depth is 60 inches or more. Runoff is
moderately rapid and the hazard of water erosion is severe.
• Bucklon-Inchau loams, (25-50%): These moderately sloping to very steep soils
are on ridges and mountainsides. Elevation ranges from 7,000 to 9,500 feet. The
average annual precipitation is about 18 inches, the average annual air
temperature is about 40 degrees F, and the average frost-free period is less than 75
days. The Bucklon soil is shallow and well drained. Permeability of the Bucklon
soil is slow and available water capacity is very low. The effective rooting depth
is 10 to 20 inches. Runoff is medium and the hazard of water erosion is severe.
The Inchau soil is moderately deep and well drained. Permeability of the Inchau
soil is moderate and available water capacity is moderate. The effective rooting
depth is 20 to 40 inches. Runoff is medium and the hazard of water erosion is
severe.
• Ildefonso stony loam, (6-25%): This deep, well drained, moderately sloping to
hilly soil is on mesas, benches, and sides of valleys. Elevation ranges from 5,000
to 6,500 feet. The average annual precipitation is about 14 inches, the average
annual air temperature is about 46 degrees F, and the average frost-free period is
125 days. Permeability is moderately rapid and available water capacity is low.
The effective rooting depth is 60 inches or more. Runoff is medium and the
hazard of water erosion is moderate.
• Idefonso stony loam, (25-45%): This deep, well drained, hilly to steep soil is on
mesa breaks, sides of valleys, and alluvial fans. Elevation ranges from 5,000 to
6,500 feet. The average annual precipitation is about 14 inches, the average
annual air temperature is about 46 degrees F, and the average frost-free period is
5 May 2013
125 days. Permeability is moderately rapid and available water capacity is low.
The effective rooting depth is 60 inches or more. Runoff is medium and the
hazard of water erosion is moderate.
• Morval loam, (3-12%): This deep, well drained, gently sloping to rolling soil is
on mesas and sides of valleys. Elevation ranges from 6,500 to 8,000 feet. The
average annual precipitation is about 15 inches, the average annual air
temperature is about 44 degrees F, and the average frost-free period is 100 days.
Permeability is moderate and available water capacity is moderate. The effective
rooting depth is 60 inches or more. Runoff is slow and the hazard of water erosion
is slight.
• Morval-Tridell complex, (6-25%): These moderately sloping to hilly soils are
on alluvial fans and sides of mesas. Elevation ranges from 6,500 to 8,000 feet.
The average annual precipitation is about 15 inches, the average annual air
temperature is about 44 degrees F, and the average frost-free period is 100 days.
The Morval soil is deep and well drained. Permeability of the Morval soil is
moderate and available water capacity is moderate. The effective rooting depth is
60 inches or more. Runoff is slow and the hazard of water erosion is slight. The
Tridell soil is deep and well drained. Permeability of the Tridell soil is moderately
rapid and available water capacity is low. The effective rooting depth is 60 inches
or more. Runoff is medium and the hazard of water erosion is moderate.
• Nihill channery loam, (1-6%): This deep, well drained, nearly level to gently
sloping soil is on alluvial fans and sides of valleys. Elevation ranges from 5,000 to
6,500 feet. The average annual precipitation is about 13 inches, the average
annual air temperature is about 48 degrees F, and the average frost-free period is
125 days. Permeability is moderately rapid and available water capacity is low.
The effective rooting depth is 60 inches or more. Runoff is slow and the hazard of
water erosion is moderate.
• Potts loam, (3-6%): This deep, well drained, moderately sloping soil is on mesas,
benches, and sides of valleys. Elevation ranges from 5,000 to 7,000 feet. The
average annual precipitation is about 14 inches, the average annual air
temperature is about 46 degrees F, and the average frost-free period is 120 days.
Permeability is moderate and available water capacity is high. The effective
rooting depth is 60 inches or more. Runoff is slow and the hazard of water erosion
is moderate.
• Potts loam, (6-12%): This deep, well drained, moderately sloping to rolling soil
is on mesas, benches, and sides of valleys. Elevation ranges from 5,000 to 7,000
feet. The average annual precipitation is about 14 inches, the average annual air
temperature is about 46 degrees F, and the average frost-free period is 120 days.
Permeability is moderate and available water capacity is high. The effective
rooting depth is 60 inches or more. Runoff is medium and the hazard of water
erosion is severe.
• Potts-Ildefonso complex, (12-25%): These strongly sloping to hilly soils are on
mesas, alluvial fans, and sides of valleys. Elevation ranges from 5,000 to 6,500
6 May 2013
feet. The average annual precipitation is about 14 inches, the average annual air
temperature is about 46 degrees F, and the average frost-free period is 120 days.
The Potts soil is deep and well drained. Permeability of the Potts soil is moderate
and available water capacity is high. The effective rooting depth is 60 inches or
more. Runoff is medium and the hazard of water erosion is moderate. The
Ildefonso soil is deep and well drained. Permeability is moderately rapid and
available water capacity is low. The effective rooting depth is 60 inches or more.
Runoff is medium and the hazard of water erosion is moderate.
• Torriorthents-Camborthids-Rock outcrop complex, (steep): This broadly
defined unit consists of exposed sandstone and shale bedrock, loose stones, and
soils that are shallow to deep. Torriorthents are shallow to moderately deep.
Camborthids are shallow to deep. The Rock outcrop is mainly Mesa Verde
sandstone and Wasatch shale. Elevation ranges from 5,000 to 8,500 feet. The
average annual precipitation is about 10 to 15 inches, the average annual air
temperature is 39 to 46 degrees F, and the average frost-free period is 80 to 105
days.
• Torriorthents-Rock outcrop complex, (steep): This broadly defined unit
consists of exposed sandstone and shale bedrock, and stony soils that are shallow
to moderately deep. Torriorthents are shallow to moderately deep. The Rock
outcrop is mainly Mesa Verde sandstone and Wasatch shale. Elevation ranges
from 5,000 to 8,500 feet. The average annual precipitation is about 10 to 15
inches, the average annual air temperature is 39 to 46 degrees F, and the average
frost-free period is 80 to 105 days.
• Wann sandy loam, (1-3%): This deep, somewhat poorly drained, nearly level to
gently sloping, low-lying soil is on terraces and bottom land in valleys. Elevation
ranges from 5,000 to 6,500 feet. The average annual precipitation is about 12
inches, the average annual air temperature is about 48 degrees F, and the average
frost-free period is 120 days. Permeability is moderately rapid and available water
capacity is high. The effective rooting depth varies with the level of the water
table but is about 2 feet. Runoff is slow and the hazard of water erosion is
moderate.
2.4 Receiving Waters
Receiving waters include Battlement Creek, Dry Creek, and many unnamed tributaries.
The ultimate receiving water is the Colorado River. Refer to Appendix A for the Site
Maps and distances to live waters.
2.5 Native Vegetation
Native vegetation consists of wheatgrass, needleandthread, Pinyon, Utah Juniper,
Bitterbrush, Shadescale, Saltbush, Greasewood, Rabbitbrush, Yucca, Galleta grass, a
variety of Astragalus and Sagebrush. Vegetative cover varies from 40% to 100%
depending on site specificity.
7 May 2013
3.0 POTENTIAL POLLUTION SOURCES
Potential pollution sources associated with construction sites and natural gas development
include:
• Sediment resulting from erosion of soil stockpiles and other areas cleared of
vegetation;
• Leakage of fuels and lubricants from equipment and spills from fueling;
• Trash and debris from clearing activities, construction materials, and workers;
• Sanitary sewage associated with portable toilets;
• Well completion fluids;
• Drill cuttings and drilling fluids;
• Produced water; and
• Condensate.
The most common source of pollution from construction activities is sediment, which can
be carried away from the work site with storm water runoff, and ultimately impact the
water quality of a receiving stream. Clearing, grading, and otherwise altering previously
undisturbed land can increase the rate of soil erosion over pre-disturbance rates.
Petroleum products can also be potential storm water pollutants. These products are used
in construction activities to power or lubricate equipment and include: fuel, gear oil,
hydraulic oil, brake fluid, and grease.
Debris from lay-down areas, residue from equipment cleaning and maintenance, and
solid waste generated from land clearing operations and human activity (trees, brush,
paper, trash, etc.) present other potential pollution sources within the construction site.
For site specific potential pollution sources, refer to Table 1. Maps of each well pad will
be generated showing the locations of all potential pollution sources.
No concrete washout activities are expected.
Vehicle tracking pads may be required for well pad development within the Battlement
Mesa.
All BMPs implemented throughout the project are intended to mitigate for the release of
sediment and all other potential pollution sources described above, and listed in Table 1.
Ursa Operating Company spill prevention and response policies must be followed and
include the following:
• Notification procedures to be used in the event of a material release or accident.
At a minimum, the production supervisor should be notified. Depending on the
nature of the spill and the material involved, Ursa Environmental staff, the
CDPHE, downstream water users, or other agencies may also need to be notified.
The WQCD toll-free 24-hour environmental emergency spill reporting line is
(877)518-5608.
• Provisions for absorbents are to be made available for use in fuel areas.
8 May 2013
4.0 DESCRIPTION OF SOIL CONTROL MEASURES
The objective of erosion sediment controls is to minimize the release of sediments and
any other potential pollutants by storm water runoff. This can be accomplished through
the use of structural and/or nonstructural controls. This section describes erosion and
sediment controls to be used during the ROW construction to minimize possible pollutant
impacts to storm water runoff.
Refer to Appendix D for implementation details of soil control measures.
Refer to Appendix A for locations of soil control measures.
4.1 Structural Practices for Erosion and Sediment Control
Structural practices implemented to provide erosion and sediment control can include
temporary and permanent BMPs. Temporary structural BMPs include, but are not limited
to, straw bale barriers/check dams, temporary water bars and straw fiber rolls/wattles.
When applicable, temporary BMPs will be implemented during construction and interim
reclamation phases. All temporary BMPs will be removed and disposed of upon final
stabilization. Permanent structural BMPs include, but are not limited to; earthen berms,
drainage dips, bar ditches, diversion ditches, sediment basins, culvert inlet/outlet
protection, and rock check dams.
4.1.1 Straw Bale and Rock Check Dams
Straw bale and rock check dams will be installed in areas of concentrated flow. The
purpose of a check dam is to reduce the velocity of water enough to allow sediment to
settle, while allowing the clean water to continue migrating. Some sediment will
accumulate behind the check dam. Sediment should be removed from behind the check
dams when it has accumulated to one-half of the original height of the dam and properly
disposed of. Check dams will be inspected for erosion along the edges of the check dams
and repaired as required immediately.
4.1.2 Straw Wattles/Straw Rolls
Straw rolls/wattles are intended to capture and keep sediment on a disturbed slope. Straw
rolls are useful to temporarily stabilize slopes by reducing soil creep and sheet and rill
erosion until permanent vegetation can be established. Straw rolls will last an average of
one (1) to two (2) years. The slope needs to be prepared before the rolls are placed. Small
trenches are created across the slope on the horizontal contour. The trench should be deep
enough to accommodate half the thickness of the roll. The trenches need to be 10 to 25
feet apart. The rolls need to be installed perpendicular to water movement, parallel to the
slope contour. The rolls need to fit snugly against the soil. No gaps should be between the
soil and roll. There should only be one (1) to two (2) inches of stake exposed above the
roll. The stakes should be installed every four (4) feet.
4.1.3 Diversion Berm/Channel
Diversion ditches can be a temporary or permanent structural BMP installed to direct
runoff or run-on storm water away from construction activity. Ditches direct water into
9 May 2013
sediment basin or other BMP structure designed to capture sediment while allow water to
move through.
4.1.4 Culvert Inlet/Outlet Protection
Inlets and outlets of culverts will be protected to prevent sediment build up within the
culvert, thus maintaining culvert functionality. Temporary protection during construction
can be implemented by installing straw bales or straw wattles around the inlet/outlet. For
permanent protection, inlets/outlets shall be protected via rock armoring. Sediment
accumulated at the inlet/outlet shall be removed as needed to ensure that there will be no
blockage of the culvert.
4.1.5 Sediment Basins
Sediment basins are structural BMPs installed to trap sediment that has been transported
from other BMPs including, but not limited to, berms, perimeter diversion ditches, bar
ditches, and drainage dips. Size and shape of each sediment basin shall depend on the
specific location and surrounding topography of each site.
4.1.6 Armored Rundowns
Armored rundowns are structural BMPs installed to minimize the erosion potential of the
underlying substrate. Installation of armored rundowns can include, but is not limited to,
inlet and outlet protection associated with sediment basins and ditches (i.e., sediment,
diversion).
4.1.7 Straw Bale Barriers
A straw bale barrier is a series of entrenched straw bales that are used to intercept and
direct sheet flows. The barrier reduces runoff velocity and filters sediment from storm
water as it moves through the barrier. The barrier may also be used to protect against
erosion.
4.1.8 Water Bars
Water bars can be a temporary or permanent structural BMP installed to direct runoff or
run-on storm water away from construction activity. Bars slow velocity of water, and
direct water into a sediment basin, or other BMP structure designed to capture sediment
while allowing water to move through.
4.1.9 Tracking Pads
Tracking pads are structural BMPs installed to trap sediment onsite prior to the respective
vehicle leaving the location. Size and shape of the respective tracking pad(s) shall depend
on the specific locations and surrounding topography of each site.
10 May 2013
4.2 Non-Structural Practices for Erosion and Sediment Control
Non-structural practices implemented for erosion and sediment control will consist of
permanent BMPs that will be utilized during all project phases from construction to
interim reclamation, and ultimately to final stabilization. Non-structural controls typically
include, but are not limited to, vegetative buffers, mulching, seeding of disturbed areas,
erosion control blankets, and surface roughening.
4.2.1 Vegetative Buffers
Vegetative buffers are areas of existing vegetation stands that are utilized as a permanent
BMP. Vegetative buffers are located on any or all edges of a project boundary. They
provide a filtering effect by minimizing velocity of storm water runoff enough to allow
sediment to settle out while allowing clean water to continue with its natural drainage
route.
4.2.2 Seeding of Disturbed Areas
Seeding of disturbed areas will be implemented as a measure taken to achieve final
stabilization. Upon construction completion, all disturbed areas to undergo reclamation
shall be seeded. As a disturbed area is seeded, it will remain in the interim reclamation
phase until the site has reached a vegetative cover area of 70% of pre-disturbance
conditions. At this point, the site will be at the final stabilization phase. The main
objective of drill seeding is to place the seed in the soil at the depth most favorable for
seed germination. Topography will determine if seed will be applied via a drill seeder or
if there is a need for broadcasting. Hand broadcasting is commonly used in areas too
small for large equipment or if the terrain is too steep for equipment to work safely.
Broadcast seeding throws the seeds randomly on the soil surface. This allows for a more
mosaic plant population, but must be applied at twice the drill seed rate for successful
germination. Once seed has been broadcast, raking or chaining the area will ensure seed
to soil contact. Refer to Appendix E for the Project seed mixes and associated application
rates.
4.2.3 Mulching
Mulching is a non-structural BMP implemented to aid in seed establishment. After a
disturbed area has been seeded, certified weed free straw mulch will be applied. Where
accessible, the mulch will be crimped into the ground to provide additional soil
stabilization.
4.2.4 Surface Roughening
Surface roughening is an erosion control practice often used in conjunction with grading.
Surface roughening involves increasing the relief of a bare soil surface with horizontal
grooves by either stair-stepping (running parallel to the contour of the land) or using
construction equipment to track the surface. Slopes that are not fine graded and left in a
roughened condition also reduces erosion. Soil roughening reduces runoff velocity,
increases infiltration, reduces erosion, traps sediment, and prepares the soil for seeding
and planting; giving the seed an opportunity to germinate and establish. Used as a
temporary or permanent BMP, surface roughening may take many different forms
including, but not limited to, ripping, pocking and tracking.
11 May 2013
5.0 PHASED BMP IMPLEMENTATION
During the Battlement Mesa development, each project will consist of a construction
phase, an interim reclamation phase, and a final stabilization phase. There will be some
BMPs implemented that can be utilized for each phase, however there will be certain
controls implemented specifically for each phase.
5.1 Construction
The construction phase of the project will consist of clearing the vegetation on the pad
location, cut and fill activities for each pad and access road, and general grading.
Appropriate BMPs will be installed for this phase of the construction. The following
outlines the necessary steps of the construction phase:
Well Pad(s) and Facilities
• Vegetation Clearing: Vegetation will be removed and place around edge of
disturbed area on down gradient side of fill slope. This will provide a brush
barrier BMP for construction;
• Topsoil will be utilized for berms or diversions;
• Straw bale barriers or other temporary BMPs will be installed prior to
construction; and
• Concrete and truck washout area will be established, if applicable, once
construction begins.
Pipeline(s)
• Pipelines will be installed along the road Right of Way when possible;
• Temporary BMPs will be installed prior to construction; and
• Permanent BMPs will be installed as ROW is reclaimed.
5.2 Interim Reclamation
Interim reclamation will be the phase of each project between construction and final
stabilization. A project will enter into interim reclamation when construction is
completed, disturbed areas have been seeded, and permanent BMPs have been installed.
Temporary BMPs that were implemented during the construction phase may continue to
be maintained during interim reclamation. Projects will remain in interim reclamation
until disturbed areas have been reclaimed to 70% of pre-disturbance conditions or
otherwise permanently stabilized (i.e. graveled). Refer to Table 1 for BMPs implemented
during the interim reclamation phase of each site.
Well Pad(s) and Facilities
• Topsoil will be used as material for swales or berms around the pad location;
• Topsoil stockpile will be seeded and mulched immediately; and
• Permanent BMPs will be installed, as temporary BMPs are removed if no longer a
viable BMP.
12 May 2013
Pipeline(s)
• Topsoil placement: Topsoil will be moved and redistributed across the surface of
the disturbed area;
• Vegetative material replacement/removal: Based upon BLM or landowner
requirements, stripped vegetation may be hauled off-site or redistributed along the
disturbed area;
• Seeding: When applicable the disturbed ROW will be seeded post construction.
The seed mix will vary depending on location and surface ownership and will
generally match the surrounding vegetation. Refer to Appendix E for seed mixes
and their respective application rate(s); and
• Mulching: When applicable, all disturbed areas to be reclaimed will be mulched
post seeding. A certified weed free straw will be crimped into the ROW to keep
an adequate moisture level in the seedbed.
5.3 Final Stabilization
Areas which have been disturbed are considered to be stabilized when a uniform
vegetative cover with a density of 70 percent of the pre-disturbance levels has been
established, or when an equivalent permanent, physical erosion reduction method is in
place.
Areas which are not used for facilities, access roads, material storages yards, or other
work areas will be stabilized with vegetation. Areas that are stabilized with vegetation
will be considered to have achieved final stabilization when a uniform stand of vegetation
with a density of at least 70 percent of the pre-disturbance has been established. Other
areas that may include facilities, access roads, material storage yards, and other work
areas will be stabilized through the use of permanent, physical erosion reduction methods
that include, but are not limited to:
• Surface covering – covering of the soil surface with structures that inhibit contact
of precipitation with the soil surface, which is generally considered to be
placement of a structure (building or tank) over the soil surface.
• Gravel surfacing – gravel surfacing will be applied in areas such as access roads,
materials storage yards, and other work surfaces. Some gravel may be lost due to
erosion from intense precipitation events or due to vehicle traffic. Gravel surfaces
will be periodically inspected to determine the need for gravel replacement.
Gravel surfaces will be replaced or repaired (through grading) when inspections
reveal that the gravel surface is no longer effectively covering the soil surface, or
performing its desired function.
• Surface contouring/ditching – road surfaces that will not be graveled shall be
constructed in a manner to prevent excessive erosion. Roads will be sloped in
way to encourage positive drainage into bar ditches, and ultimately into sediment
13 May 2013
control structures. A compact, earthen berm will be constructed at the uphill side
of the road slope.
6.0 MATERIALS HANDLING AND SPILL PREVENTION
6.1 Waste Management and Disposal
The various construction activities mentioned in this SWMP will generate various other
waste materials during the course of construction. These wastes typically include, but are
not limited to, the following:
• Trees and shrubs from clearing operations;
• Trash and debris from construction materials and workers; and
• Sanitary sewage.
Each of these wastes will be managed so as to not contribute to storm water pollution.
Trees and shrubs will be piled along the toe of fill slopes to provide additional sediment
control. Construction trash and debris will be collected in appropriate containers and
hauled off-site for disposal in suitable landfills. Sanitary waste will be contained in
portable toilets or other storage tanks with waste materials regularly pumped and
transported off-site for proper disposal at approved facilities.
6.2 Fuels and Materials Management
Petroleum Products
Petroleum products which may be present at the construction site include: gasoline, diesel
fuel, lubricant oils, hydraulic oils, used oils, and solvents. Gasoline and diesel fuel will be
stored in portable storage tanks with secondary containment. Lubricant, hydraulic, and
miscellaneous oils and solvents will be stored in containers up to 55-gallons in volume, in
secondary containment.
Pollutants from petroleum products used during construction activities adhere easily to
soil particles and other surfaces. In case of a spill or leak, soils contaminated with
petroleum products will be contained and removed to a proper disposal site. Erosion and
sediment control practices will aid in retention of spills or leaks. Use of secondary
containment and drip pans will reduce the likelihood of spills or leaks contacting the
ground. Proper maintenance and safe storage practices will reduce the chance of
petroleum products contaminating the site. Oily wastes such as crankcase oil, cans, rags,
and paper containing oils will be placed in proper receptacles and disposed of or
recycled. An additional source of petroleum contamination is leaks from equipment and
vehicles. Routine daily inspections will be conducted to identify leaks and initiate
corrective actions, if needed.
The following guidelines for storing petroleum products will be applied:
• All product containers will be clearly and properly labeled;
• Drums will be kept off the ground within secondary containment and stored under
cover when necessary;
14 May 2013
• Fuel tanks will be stored within areas containing secondary containment;
• Lids of drummed materials will be securely fastened;
• Emergency spill response procedures will be available on-site (Persons trained in
handling spills will be on call at all times);
• Spill cleanup and containment materials (absorbent, shovels, etc.) will be readily
available. Spills will be immediately cleaned up and contaminated materials will
be properly stored on site until they can be disposed of in accordance with
applicable regulations;
• Storage areas and containers will be regularly monitored for leaks and repaired or
replaced as necessary. Construction personnel should be informed about proper
storage and handling of materials during weekly subcontractor or safety meetings;
• Provisions for absorbents are to be made available for use in fuel areas; and
• Spill response will be immediate, contaminated soils will be contained and
disposed of in accordance with applicable regulations.
Notification procedures are to be used in the event of a material release or accident. At a
minimum, the field supervisor should be notified. Depending on the nature of the spill
and the material involved, Ursa staff, the CDPHE, downstream water users, or other
agencies may also need to be notified.
Notification Requirements:
• Ursa Facility Manager
• Project Environmental Coordinator/Regional Coordinator
• State Agency in accordance with applicable regulations
Hot Line Numbers:
• WQCD toll-free 24-hour environmental emergency spill reporting line is
(877)518-5608.
• Colorado Department of Natural Resources oil and Gas conservation commission-
oil spills 303-894-2100
• National Response Center 800-424-8802
A construction site spill report will include the following details of the incident:
• The date and time of the incident;
• A description of the material spilled;
• Quantity spilled;
• Circumstances that caused spill;
• List of water bodies affected or potentially affected by spill;
• Statement verifying whether an oil sheen is present;
• Size of the affect area;
• An estimate of depth;
• Determination of possible migration of spill off Ursa property;
• Statement of time of cleanup, methods being used, and personnel involved; and
15 May 2013
• Name of person to first observe spill, witnesses and their affiliations.
Other Chemical Product Management
Various additional materials will be used and stored on site for use in construction. These
materials will be stored appropriately and managed to minimize spills and leaks. Storage
areas will be regularly inspected, and any minor spills or leaks will be cleaned up
immediately.
Materials Management
The construction supervisor will maintain a lay-down or staging area for equipment and
materials storage on site. These areas will be maintained with good housekeeping and
will be inspected on a regular basis for spills, leaks, and potential contamination.
6.3 Construction Site Housekeeping
Housekeeping will consist of neat and orderly storage of materials and containerized
fluids. Wastes will be temporarily stored in sealed containers and regularly collected and
disposed of at appropriate off-site facilities. In the event that a spill occurs, prompt
cleanup is required to minimize any commingling of waste materials with storm water
runoff.
Routine maintenance will be limited to fueling and lubrication of equipment. Drip pans
will be used during routine fueling and maintenance to contain spills or leaks. Any waste
product from maintenance will be contained and transported off site for disposal or
recycling. There will be no major equipment overhauls conducted on site. Equipment will
be transported off site when major overhauls are necessary.
Cleanup of trash and discarded materials will be conducted at the end of each work day.
Cleanup will consist of patrolling the road way, access areas, and other work areas to
pick up trash, scrap debris, other discarded materials, along with any contaminated soil.
Upon collection, these waste materials will be disposed of properly.
16 May 2013
7.0 DEDICATED CONCRETE OR ASPHALT BATCH PLANTS
Not applicable to anticipated projects within the Battlement Mesa project area.
17 May 2013
8.0 VEHICLE TRACKING CONTROLS
Vehicle track pads will be installed at all locations where it is considered necessary.
Track pads will be approximately 20 feet wide and 20 feet long. This will eliminate
sediment transport onto public roadways.
18 May 2013
9.0 INSPECTION AND MAINTENANCE PROCEDURES
To meet the requirements of the Permit, inspection and maintenance of erosion and
sediment controls must occur during the project. Continued inspection and maintenance
is required for specific structures after construction is completed. The inspection program
will include the following:
1. A certified person familiar with the SWMP and control measures will conduct the
inspections.
2. Inspections will cover the following items within the construction site:
• Disturbed areas without stabilization;
• All structural and non-structural BMPs (temporary and permanent);
• Material storage areas;
• Surface water diversions;
• Down gradient areas; and,
• New access roads;
• Site vehicle entrance/exit locations.
3. Inspections will occur at least once every 14 calendar days (during construction)
and after a significant precipitation event, or snow melt event that causes potential
for erosion. Once all measures have been taken to reach interim reclamation,
inspections shall occur at least once every 30 calendar days.
4. A log of inspections will be maintained.
5. Water quality will be visually assessed for all receiving streams and discharge
areas during each inspection.
6. Disturbed areas and material storage areas that are exposed to precipitation will be
inspected for evidence of pollutants entering nearby drainages.
7. Roads used for vehicle access will be inspected for evidence of off-site sediment
transport.
8. Following each inspection, the SWMP will be modified as necessary to include
additional controls designed to correct identified problems. Necessary revisions to
the SWMP will be made within 7 days of the inspection.
9. An inspection report summarizing the scope of the inspection, the name of the
person conducting the inspection, the date of the inspection, and observations
relating to proper implementation will be prepared. Inspection reports will be
retained for at least 3 years from the date that the site is finally stabilized.
10. Actions taken to modify any storm water control measure will be recorded and
maintained with the SWMP.
11. If no deficiencies are found during the inspection, the report will contain
certification that the site is in compliance with the SWMP.
Maintenance Procedures
Maintenance will include prompt repairs and/or adjustments to any erosion and sediment
control structures that are deteriorating or found to be performing inadequately. BMP
conditions and dates of BMP maintenance will be documented within the storm water
inspection checklists. Repairs are to be made as soon as possible and prior to the next
anticipated storm event.
19 May 2013
Inspection Forms
Inspection forms shall be a part of this SWMP and will include information such as dates
of maintenance/modifications of existing BMPs, installation of new BMPs, any site
housekeeping requirements, and general comments. Refer to Appendix C for an example
of the storm water inspection document.
20 May 2013
10.0 NON-STORMWATER DISCHARGES
No allowable sources of non-storm water discharges are anticipated from the project.
Some possible exceptions include, but are not limited to, fire prevention/suppression or
dust control activities. Produced water will be collected and hauled off site to a proper
storage facility and not discharged.
21 May 2013
11.0 CERTIFICATIONS
11.1 Owner/Applicant Certification
I certify under penalty of law that this document and all attachments were prepared under
my direction or supervision in accordance with a system designed to assure that qualified
personnel properly gather and evaluate the information submitted. Based on my inquiry
of the person(s) who manages the system, or the person(s) directly responsible for
gathering the information, I verify that the information submitted within this plan is, to
the best of my knowledge and belief, true, accurate, and complete. I am aware that there
are significant penalties for submitting false information, including the possibility of fine
and imprisonment for knowledge of violations.
Signature:
Name: Robert W. Bleil
Title: Regulatory & Environmental Manager
Date:
Applicant Name & Address: Ursa Operating Company, LLC
1050 17th Street, Suite 2400
Denver, CO 80265
Site Name and Location: Battlement Mesa
Township 7 South
Range 95 West
Garfield County, Colorado
22 May 2013
11.2 Storm Water Management Plan Administrator
The SWMP Administrator is responsible for developing, implementing, maintaining, and
revising the SWMP. This individual is responsible for the accuracy, completeness, and
implementation of the SWMP.
SWMP Administrator Certification
I certify under penalty of law that I understand the terms and conditions of the SWMP
and associated CDPS General Permit that authorizes storm water discharges associated
with industrial activity from the construction sites identified as part of this certification.
Signature:
Name: Robert W. Bleil
Title: Regulatory & Environmental Manager
Date:
Representing:
Company: Ursa Operating Company, LLC
Address: 1050 17th Street, Suite 2400
Address: Denver, CO 80265
Phone: 970.625.9922
23 May 2013
12.0 ADDITIONAL BMP REFERENCES
The structural and non-structural BMPs listed in this SWMP are intended to include all
BMPs that may be used for gas gathering projects. However, there may be situations
where a BMP is needed but not included in this SWMP, or project personnel may need
additional information on the installation, use, specifications, and/or maintenance of
BMPs. Additional information regarding various BMPs is available by referencing the
following:
For oil and gas operations, the Bureau of Land Management and U.S. Forest Service have
developed “Surface Operating Standards and Guidelines for Oil and Gas Exploration and
Development,” “Gold Book.” The most recent version (fourth edition) of this is
available on the internet at: http://www.blm.gov./bmp/GoldBook_Draft_v12.pdf.
For Construction BMPs the Urban Drainage and Flood Control District, a Colorado Front
Range group of city and county agencies has developed a BMP manual that is available
on the internet at:
http://swcc.state.al.us/pdf/ASWC_June_2003_Alabama_Handbook_ConstructionE&S_C
ontrol.pdf.
For construction BMPs and surface stabilization methods, the Alabama Soil and Water
Conservation Committee have developed “Erosion Control, Sediment Control and Storm
Water Management on Construction Sites and Urban Areas, Volume 1 Developing Plans
and Designing Best Management Practices.” This information is available on the internet
at: http://www.blm.gov/bmp/field%20guide.htm
For access roads, the US Forest Service and Bureau of Land Management have
developed “Low-Volume Roads Engineering, Best Management Practices Field Guide,”
which is available online at: http://www.blm.gov/bmp/field%20guide.htm
For seeding methods and applications information was obtained from the Practical
Handbook of Disturbed Land Revegetation. Frank F. Munshower, CRC Press Inc. 1994
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CERTIFICATION TO DISCHARGE
UNDER
COPS GENERAL PERMIT COR -0300000
STORMWATER ASSOCIATED WITH CONSTRUCTION ACTIVITIES
Certification Number: COR03KS66
This Certification to Discharge specifically authorizes:
Ursa Operating Co LLC
to d isc harge stormwater from the facility identified as
Battlement Mesa Well Field
To the waters of the State of Colorado, including, but not limited to:
Facility Industrial Activity :
Facility Located at:
Battlement Creek and Dry Creek -Colorado River
Oil and Gas Production and/or Exploration,
I 70 an d Battlement Pkwy, Battlement Mesa
Garfield County, CO 81636
Latitude 39.443, Longitude -108.009
Certification is effective : 5/21/2013 Certification Expires: 6/30/2012
ADM INI STRATIVE LY CONT INUED
This certification under the permit requires that specific actions be performed at designated times. The
ce rtification hold er is legally obligated to comply with all terms and con ditions of the permit.
Signed,
,. .
/ -. ·,-
// " ,
Nathan Moore
Construction/MS4/Pretreatment Unit Manager
Water Quality Contro l Division
Page 1of22
STATE OF COLOMDO
John W . Hickenlooper, Governor
Christopher E. Urb ina, MO , MPH
Executive Director and Chief Medical OHicer
Dedicated to protecting and Improving the health and environment of the people of Colorado
4300 Cherry Creek Or . S. La boratory Services Division
Denver, Colorado 80246-1530 8100 Lowry Blvd .
Phone (303) 692-2000 Denver, Colorado 80230-6928
Located in Glendale , Colorado (303) 692-3090
http://www.cdphe .state .co .us
Colorado Depanment
of Public Health
and Environment
5/21/2013
Robert W Bleil, Reg and Env Mgr
Ursa Operating Co LLC
1050 17 St Ste 2400
Denver, CO 80202
RE: Certification, Colorado Discharge Permit System
Permit No., COR030000, Certification Number: COR03K566
Dear Mr./Ms. Bleil;
The Water Quality Control Division (the Division) has reviewed the application submitted for the Battlement Mesa Well Field fa ci lity and determined
that it qualifies for coverage under the CDPS General Perm it for Stormwater Discharges Assoc iated w ith Construction Activitie s (the pe rmit). En closed
please find a copy of the permit certification, which was issued under the Colorado Water Qua lity Control Act.
Facility: Battlement Mesa Well Field Garfield County
Construction Activiti es: Oil and Gas Production and/or Exploration,
Legal Contact (receives a/I legal documentation pertaining to the permit certifica tion):
Robert W Bleil, Reg and Env Mgr Phone number: 970-625-9922
Ursa Operating Co LLC Ema i l: rbleil@ursa r esources .com
1050 17 St Ste 2400
Denver, CO 80202
Facil ity Contact (contacted for general inquiries rega rding the facility):
Robert W Bleil, Reg and Env Mgr
Billing Contact (re ceives the invoice pertaining to the permit certification):
Robert W Ble il, Reg and Env Mgr
Ursa Operating Co LLC
1050 17 St Ste 2400
Denver, CO 80202
Phone numbe r: 970-625-9922
Ema i l : rbleil@ursaresou rces.c om
Phone number: 970-625-9922
Email: rbleil@ursareso ur ces.com
Any changes to the contacts listed above must be provided to the Division on a Change of Contact form. This form is ava ilable on the Division's website
at coloradowaterpermits .com.
The Annual Fee for this certification is $245.00, and is invoiced every July . Do Not Pay This Now. The initial p rorated invoi ce will be sent to t he legal
contact shortly.
The Division is currently developing a new permit and associated certification for the above pe r m itted facility. The development and rev iew
procedures required by law have not yet been completed. The Construction Stormwater Genera l Permit, whi ch will expire June 30, 2012, will be
administratively continued and will remain in effect under Section 104(7) of the Administrative Pro cedures Act, C.R .S. 1973, 24-4 -101, et seq (1982
repl. vol. 10) until a new perm it /certificati on is issued and effective . The renewal for this facil ity will be based on t he application that was received
5/14/2013 .
Pl ease read the enclosed permit and certification. If you have any questions please contact Kath leen Resow, Environ mental Protect ion Spec ial ist, at
(303) 692 -3521.
Sincerely,
Karen Harford, Administrative Assistant II
WATER QUALITY CONTROL DIVISION
Enclosures: Certification page; General Permit; Highlight Sheet; Termination form
xc : Permit File /keh cert
Appendix C - URSA STORMWATER INSPECTION LOG Field:
Battlement Mesa
Project ID:
Type Infrastructure:
Date:
BMP LOC ID BMP Type M CA Work Description / Comments P INSPECTIONS
Current Inspection Cycle:
Scheduled Inspection:
*Signif Precip Event Inspection:
Post Construction Inspection:
Winter Exclusion:
Permit #
SITE STATUS
Construction Start Date:
Construction Completion Date:
Acres Disturbed:
Acres Restored:
Distance to Receiving Waters:
Number of Tanks:
Number of Separators:
Free Board in 2nd contmnt:
Comment:
House Keeping:
Spills and Leaks:
Other Equipment:
Materials Handling:
Seed Mix:
Date Planted:
Revegetated (70%):
Comment:
Date Work Completed:
Inspector - Company:
M (Maintainence) CA (Corrective Action)
P (Priority): (1) - Immediate Action within 1-3 days (2) - Action within 1 week (3) - Action within 2 weeks (4) - Action within 4 weeks (5) - Action is Seasonal
Site complies with the CDPS General Permit COR030000 in
accordance with the permit requirements and conditions.
Vegetation
WORK COMPLETION (BMP CONTRACTOR USE ONLY)
Inspector Signature:
Applicable Regulatory Agency:
Construction Manager:
SITE MAP
RECOMMENDED ACTIONS
Processing Equipment
D1
Appendix D – BMP Installation Details
Check Dams
Description and Purpose
Check dames are small, temporary dams constructed across a swale or channel. Check
dams can be constructed using gravel, rock, sandbags, logs, straw bales, or reusable
products and are used to slow the velocity of concentrated flow in a channel and reduce
erosion. Check dams reduce the effective slope of the channel, thereby reducing the
velocity of flowing water, allowing sediment to settle and reducing erosion. Reduced
slopes reduce the velocity of storm water flow, thus reducing erosion of the swale or
ditch and promoting sedimentation. The use of check dams for sedimentation will likely
result in little net removal of sediment because of the small detention time and probable
scour during longer storms. Using a series of check dams will generally increase their
effectiveness. A sediment trap may be placed immediately upstream of the check dam to
increase sediment removal efficiency.
Construction Specifications
• Dams should be installed with careful placement of the construction material.
Dumping of the material into a channel is not appropriate and will reduce overall
effectiveness.
• Check dams can be constructed from a number of different materials. Most
commonly, they are made of rock, straw bales, or sand bags. When using rock or
stone, the material diameter should be 2 to 15 inches or sized appropriately to the
site specific conditions.
• The center of the dam should be at an elevation which is lower than the edges.
This design creates a weir effect that helps to channel flows away from the banks
and prevent further erosion.
• Additional stability can be achieved by implanting the dam material into the sides
and bottom of the channel.
• Check dams may be used in a series and spaced as needed to reduce flow velocity
and as site conditions allow.
• When installing more than one check dam in a channel, outlet stabilization
measures should be installed below the final dam in the series. Because this area
D2
is likely to be vulnerable to further erosion, riprap, geotextile lining, or some other
stabilization measure is recommended.
Maintenance Considerations
Inspection frequency shall be in accordance with the Storm Water Pollution Prevention
Plan. During inspection, large debris, trash, and leaves should be removed. The center of
the check dam should always be lower than its edges. If erosion or heavy flows cause the
edges of a dam to fall to a height equal to or below the height of the center, repairs should
be made immediately. Accumulated sediment should be removed from the upstream side
of a check dam when the sediment has reached a height of approximately one-half the
original height of the day (measured at the center).
D3
Removal/Abandonment
Check dams may or may not be removed depending on the material of construction and
site specific conditions. Check dams shall only be removed after the contributing
drainage area has been completely stabilized.
D4
Straw Wattles/ Fiber Rolls
Description and Purpose
A wattle (also called a fiber roll) consists of straw, flax, or other similar materials bound
into a tight tubular roll. When wattles are placed at the toe and on the face of slopes, they
intercept runoff, reduce its flow velocity, release the runoff as sheet flow, and provide
removal of sediment from the runoff. By interrupting the length of a slope, fiber rolls can
also reduce erosion.
Wattles should be either prefabricated rolls or rolled tubes of erosion control blanket. (If
using an erosion control blanket roll the length of erosion control blanket into a tube of
minimum 8 in. diameter and bind roll at each end and every 4 ft along length of roll with
jute-type twine.)
Minor deviations from the following construction specifications are acceptable as long as
performance oriented specifications are maintained. The performance oriented
specification for wattles is that sediment is not observed on the down gradient side of the
wattle row. If sediment is observed on the down gradient side of the wattle, the wattle
should be re-installed.
Construction Specifications
1. Locate wattles on level contours where possible. However, wattles may also
be used off-contour to direct runoff to an outlet sediment control BMP (i.e. a
sediment trap) or used as a check dam within a diversion ditch.
2. Suggested spacing of wattles for use of permanent slopes is as follows:
a. Slope inclination of 4:1 (H:V) of flatter: Fiber rolls should be placed
at a maximum interval of 20 ft.
b. Slope inclination between 4:1 and 2:1: Fiber rolls should be placed at a
maximum interval of 15 ft. (A closer spacing is more effective).
c. Slope inclination 2:1 or greater: Fiber rolls should be placed at a
maximum interval of 10 ft. (A closer spacing is more effective).
D5
3. Wattles may also be used on temporary slopes at a spacing determined in the
field or as a single wattle placed at the toe of the slope of at the perimeter of a
project.
4. Turn the ends of the wattles up slope to prevent runoff from going around the
roll. When using wattles to direct runoff to another BMP, the ends of the
wattles do not need to be turned up slope.
5. Stake wattles into a 2 to 4 in. deep trench with a width equal to the diameter of
the wattle. If frozen conditions prevent trenching, wattles may be temporarily
secured to the ground without trenching. However, when warm weather
permits, wattles will be re-installed in a trench.
6. Drive stakes at the end of each wattle and the stakes should be installed every
4 feet.
7. If more than one wattle is place in a row, the rolls should be overlapped or
tightly abutted.
Maintenance Considerations
• In construction phase BMPs will be inspected every 14 days or within 24 hours of
a significant storm event. In interim phase BMPs will be inspected every 30 days.
• Repair or replace split, torn, unraveling, flattened, saturated, or slumping rolls.
• If the wattle is used as a sediment capture device, or as an erosion control device
to maintain sheet flows, sediment that accumulates must be periodically removed
in order to maintain wattle effectiveness.
• Sediment should be removed when sediment accumulation reaches one-half the
designated sediment storage depth, usually one-half the distance between the top
of the wattle and the adjacent ground surface.
D6
Removal/Abandonment
Once a wattle is no longer necessary it should be removed. Collect and dispose of
sediment accumulation, and fill and compact holes, trenches, depressions or any other
ground disturbance to blend with adjacent ground.
D7
D8
Diversion Berm/Channel
Description and Purpose
A diversion berm or channel is a structure that intercepts, diverts and conveys surface
run-on, generally sheet flow, to prevent erosion. Earth dikes/drainage swales are not
suitable as sediment trapping devices as the main purpose is to manage flow direction.
These structures may however be modified when integrated with other soil stabilization
and sediment controls, such as check dams, plastics, and blankets, to prevent scour and
erosion in newly graded dikes, swales and ditches.
Implementation
General
Earth dikes/drainage swales may be used to convey surface runoff down sloping land,
intercept and divert runoff to avoid sheet flow over sloped surfaces, divert and direct
runoff towards a stabilized watercourse or channel or intercept runoff from hardened
surfaces such as well pads or roadways. Additionally, earth dikes/drainage swales may
be used below steep grades where runoff begins to concentrate, along roadways and
facility improvements subject to flood drainage. at the top of slopes to divert run-on from
adjacent or undisturbed slopes and/or at bottom and mid-slope locations to intercept sheet
flow and convey concentrated flows.
Design and Layout
• Install riprap, grouted riprap, or concrete apron at selected outlet. Riprap aprons
are best suited for temporary use during construction.
• Compact subgrade and/or berm.
• Use stabilizing cover (i.e. seeding, hydroseeding or blankets) when necessary, as
determined by slope and erosion potential of the soil.
• Modification of this BMP type may be necessary due to site specific
requirements. At these locations sediment basins, rock check dams, erosion
control blankets and/or seeding types of BMPs will be integrated. Design, layout
and implementation should maintain and follow each BMP type general
installation specification.
• Refer to the schematic detail at the end of this section.
D9
Inspection and Maintenance
• In construction phase BMPs will be inspected every 14 days or within 24 hours of
a significant storm event. In interim phase BMPs will be inspected every 30 days.
• Inspect ditches and berms for washouts. Replace lost riprap, damaged linings or
soil stabilizers as needed.
• Inspect channel embankments, linings and beds of ditches and berms for erosion
and accumulation of debris and sediment. Remove debris and sediment once 75%
of the capacity has been filled, and repair linings and embankments as needed.
• Temporary conveyances shall be completely removed as soon as the surrounding
drainage area has been stabilized, or at the completion of construction.
D10
Culvert Inlet/Outlet Protection
Description and Purpose
Culvert inlet/outlet protection typically consists of gravel riprap that act as energy
dissipation features, thus allowing for the settling of sediments, while preventing piping
or undercutting from occurring at the inlet or outlet. Riprap should consist of small to
medium gravels that are layered to achieve uniform density.
Implementation
General
Culverts may be installed on a site specific basis to provide a method of transport through
confining features such as roadways and well pads.
D11
Design and Layout
• Install riprap, grouted riprap, or concrete apron at selected outlet. Riprap aprons
are best suited for temporary use during construction.
• Carefully place riprap to avoid damaging the filter fabric, if applicable.
• For proper operation of apron:
o Align apron with receiving stream and keep straight throughout its length.
If a curve is needed to fit site conditions, place it in upper section of apron.
o If size of apron riprap is large, protect underlying filter fabric with a gravel
blanket.
• Outlets on slopes steeper than 10% shall have additional protection.
Inspection and Maintenance
• In construction phase BMPs will be inspected every 14 days or within 24 hours of
a significant storm event. In interim phase BMPs will be inspected every 30 days.
• Repair or fill any unnecessary gaps or holes in the inlet/outlet of culverts.
• Inspect for scour beneath the riprap and around the outlet. Repair damage to
slopes or underlying filter fabric immediately.
• Temporary devices shall be completely removed as soon as the surrounding
drainage area has been stabilized, or at the completion of construction.
D12
Sediment Basin
Description and Purpose
A sediment basin provides adequate settling time, retention capacity and reduction of
flow velocities minimizing erosion and allowing for settling of suspended sediment. A
basin may be constructed by the construction of a barrier or dam across a natural drainage
path, by excavating a basin or by a combination of both. Basins usually consist of a dam,
blanketed or hydroseeded downgradient slopes/berms and a stabilized outlet (spillway).
Implementation
A sediment basin is a temporary containment area that allows sediment in collected storm
water to settle out during infiltration or before the runoff is discharged through a
stabilized spillway. Sediment basins are formed by excavating or constructing an earthen
embankment across a waterway or low drainage area. Basins should be placed at the end
of perimeter sediment ditches, diversion ditches, along bar ditches upgradient areas from
which sediment-laden storm water directly enters a drainage or watercourse. The size of
the structure will depend upon the location, size of drainage area, soil type, rainfall
pattern and desired outflow releases.
Design and Layout
• Sediment basins should be constructed prior to the rainy season and
commencement of construction activities in the area.
• Sediment basins are not to be constructed in any live stream.
• Sediment basin(s), as measured from the bottom of the basin to the principal
outlet, should have at least a capacity equivalent to 100 cubic meters (3,532 cubic
feet) of storage per hectare (2.47 acres) draining into the sediment basin. The
length of the basin should be more than twice the width of the basin. The length is
determined by measuring the distance between the inlet and the outlet. The depth
must not be less than 0.9 m (3 ft) nor greater than 1.5 m (5 ft) for safety reasons
and for maximum efficiency.
• Multiple traps and/or additional volume may be required to accommodate site
specific rainfall and soil conditions.
• Basins with an impounding levee greater than 1.5 m (5 ft) tall, measured from the
lowest point to the impounding area to the highest point of the levee, and basins
D13
capable of impounding more than 1000 cubic meters (35,300 cubic feet), shall be
individually designed and implemented with direct on-site oversight provided by
appropriate and designated personnel. Additional safety requirements such as
fencing may also be required.
• Rock, blankets, hydromulch and/or vegetation shall be used to protect the basin
inlet and slopes against erosion.
• Embankments shall be constructed of a material and size (i.e. sorted, with fines)
capable of attaining sufficient levels of compaction and conductivity to ensure the
structural integrity of the structure and its desired retention capacity and
capability. Generally compaction of the structure is by use of heavy machinery
• Use rock or vegetation in addition to geotextile to protect the basin outlet(s)
against erosion.
Inspection and Maintenance
• In construction phase BMPs will be inspected every 14 days or within 24 hours of
a significant storm event. In interim phase BMPs will be inspected every 30 days.
• Inspect sediment basin banks for embankment seepage and structural soundness.
• Inspect inlet and outlet (rock spillway) areas for erosion, damage or obstructions
and stabilize/maintenance as necessary.
• Remove accumulated sediment when the volume has reached one-third the
original trap volume.
• Properly disposed of sediment and debris removed from the trap.
D14
Riprap/ Armored Rundown
Description and Purpose
Lined channels are excavated channels or swales lined with grass, riprap, or other
protective material. They are intended to carry concentrated runoff to a stable outlet
without causing erosion or flooding. In some cases they are designed to allow runoff to
infiltrate into the surrounding soil (Figure 6).
Design and Installation
Grass-lined channels may have V-shaped, parabolic, or trapezoidal cross-sections. Side
slopes should not exceed 3:1 to facilitate the establishment, maintenance, and mowing of
vegetation. A dense cover of hardy, erosion-resistant grass should be established as soon
as possible following grading. This may necessitate the use of straw mulch and the
installation of protective netting until the grass becomes established (see BMP 2.2,
Mulching and Matting).
If the intent is to create opportunities for runoff to infiltrate into the soil, the channel
gradient should be kept near zero, the channel bottom must be well above the seasonal
D15
water table, and the underlying soils should be relatively permeable (generally, with an
infiltration rate greater than 2 cm per hour).
Riprap-lined channels may be installed on somewhat steeper slopes than grass-lined
channels. They require a foundation of filter fabric or gravel under the riprap. Generally,
side slopes should not exceed 2:1, and riprap thickness should be 1.5 times the maximum
stone diameter. Riprap should form a dense, uniform, well-graded mass.
Applicability, Limitations, and Common Problems
A limitation of lined channels is that they tend to take up substantial land area on a site.
Where land is expensive they may not be a cost-effective solution.
Grass-lined channels typically are used in residential developments, along highway
medians, or as an alternative to curb and gutter systems. Grass-lined channels should be
used to convey runoff only where slopes are 5% or less. They require periodic mowing,
occasional spot-seeding, and weed control to ensure adequate grass cover.
Common problems in grass-lined channels include erosion of the channel before
vegetation is fully established and gullying or head cutting in the channel if the grade is
too steep. Trees and brush tend to invade grass-lined channels, causing maintenance
problems.
Riprap lined channels can be designed to safely convey greater runoff volumes on some-
what steeper slopes. However, they should generally be avoided on slopes exceeding
10%. Common problems include stone displacement or erosion of the foundation, or
channel overflow and erosion because the channel is not large enough.
Channels established on slopes greater than 10% will usually require protection with rock
gabions, concrete, or other highly stable and protective surface.
Riprap rundown information obtained from:
http://www.cep.unep.org/pubs/Techreports/tr32en/content.html
D16
Straw Bale Barrier
Description and Purpose
A straw bale barrier is a series of straw bales placed on a level contour to intercept sheet
flows. The use of a straw bale barrier ponds sheet- flow runoff, allowing sediment to
settle out.
Implementation
A straw bale barrier consists of a row of straw bales placed on a level contour. When
appropriately placed, a straw bale barrier intercepts and slows sheet flow runoff, causing
temporary ponding. The temporary ponding provides quiescent conditions allowing
sediment to settle. Straw bale barriers also interrupt the slope length and thereby reduce
erosion by reducing the tendency of sheet flows to concentrate into rivulets, which erode
rills, and ultimately gullies, into disturbed, sloped soils.
Straw bale barriers have not been as effective as expected due to improper use and
installation. These barriers have been placed in streams and drainage ways where runoff
volumes and velocities have caused the barriers to wash out. In addition, failure to stake
and entrench the straw bale has allowed undercutting and end flow. Use of straw bale
barriers in accordance with this BMP should produce acceptable results.
Bales should be placed in a single row on a level contour with ends tightly abutting one
another. All bales should be installed on their sides so that twine or binding runs around
side of bale rather than on the top and bottom. Bales should be trenched in and staked.
See illustration below.
D17
Materials
• Straw Bale Size: Each straw bale should be a minimum of 14 in. wide, 18 in. in
height, 36 in. in length and should have a minimum mass of 50 lbs. The straw
bale should be composed entirely of vegetative matter, except for the binding
material.
• Bale Bindings: Bales should be bound by steel wire, nylon or polypropylene
string placed horizontally. Jute and cotton binding should not be used. Baling
wire should be a minimum diameter of 14-gauge. Nylon or polypropylene string
should be approximately 12-gauge in diameter with a breaking strength of 80 lbs
force.
• Stakes: Wood stakes should be commercial quality lumber of the size and shape
shown on the plans. Each stake should be free from decay, splits or cracks longer
than the thickness of the stake, or other defects that would weaken the stakes and
cause the stakes to be structurally unsuitable. Steel bar reinforcement should be
equal to a #4 designation or greater. End protection should be provided for any
exposed bar reinforcement.
Inspection and Maintenance
• In construction phase BMPs will be inspected every 14 days or within 24 hours of
a significant storm event. In interim phase BMPs will be inspected every 30 days.
• Inspect straw bale barriers for sediment accumulations and remove sediment
when depth reaches one-third the barrier height.
• Replace or repair damage bales and washouts as needed
• Remove straw bales when no longer needed. Remove sediment accumulation, and
clean, re-grade, and stabilized the area.
D18
D19
D20
Water Bar
Description and Purpose
A water bar is made of earthen fill, mound-trench built into a road, pipeline right-of-way (ROW)
or well pad. The purpose is to divert water and dissipate energy by reducing flow velocity by
redirecting inertia direction.
Implementation
Water bars are to be implemented at a 15 to 30 degree downslope position relative to the relief
and layout of the roadway, ROW or well pad. Water bars are to be constructed using a bulldozer
or road grater. The water bar should be built such that the uphill end of the bar ties into any
adjacent bank, cut wall or preserved existing vegetation to receive ditch flow. An energy
absorber on the downslope outfall, such as riprap, brush, native vegetative filter and the like, will
serve to slow and dissipate the water's energy. When installed in series, the number used is
dependent on the slope of the site/surrounding area and should generally proceed as follows:
Grade (Degrees) Spacing (feet) between Water Bars
0-5 None Required
5-15 300
15-30 200
30 100
Water bars should be armored under circumstances of steep grades. The BMP should be also be
stabilized with seeding/mulching with a mixture determined/agreed upon by an appropriate
party.
Water bars implemented at a pad entrance are intended to contain water on the pad. At these
locations the water bar should be built such that both end tie into the pad perimeter berm. This
provides 100% containment and control of the storm water collected on the pad from
precipitation.
Inspection and Maintenance
• In construction phase BMPs will be inspected every 14 days or within 24 hours of a
significant storm event. In interim phase BMPs will be inspected every 30 days.
• Inspect sediment basins for sediment load and erosion around over flow. Inspect check
dams for sediment load, and rilling from water tracking around outer edge of check dam.
D21
Vehicle Tracking Pad
Description:
A rock construction entrance pad may be necessary at construction access locations to reduce the
amount of mud transported onto paved roads by vehicles or surface runoff. Rock construction
entrance pads provide an area where mud can be removed by vehicle tires traveling over the
gravel pad before entering public roads.
A construction entrance is a stabilized pad of aggregate over a geotextile base and is used to
reduce the amount of mud tracked off-site with construction traffic.
A temporary construction entrance is a stone pad located where vehicles leave a construction
site. The purpose of the stone pad is to provide an area where mud can be removed from tires
before a vehicle leaves the site. The stone pad consists of clean rock designed in such a way that
vehicle tires will sink in slightly. This helps remove mud from the tires as the vehicle passes
over the pad. If a wash rack is used, it provides an area where vehicle tires can be washed.
Effectiveness:
The effectiveness of temporary rock construction entrances for trapping sediment depends upon
the length, depth of rock, frequency of use and maintenance, as well as the type of structure used.
A newly installed rock construction entrance meeting the recommendations included here will be
relatively effective for removing mud from tires before construction vehicles leave the site.
However, once the rock voids become clogged with mud, the practice will not serve its intended
D22
purpose until the rock is replaced. Washing vehicle tires with pressurized water over a wash
rack will increase the effectiveness of the tracking pad for removing mud.
Advantages:
• Cost-effective
• Highly effective for erosion and sediment control
Limitations:
• Muddy sites will require extensive maintenance of the vehicle tracking pad to ensure
effective sediment removal.
• Gravel can become quickly saturated with mud in certain soils and moisture conditions
Design:
The aggregate is recommended to be 1 to 3 inch washed rock. The aggregate layer should be 6
inches thick and extend the full width of the ingress and egress areas. The rock pad should be at
least 50 feet long. A geotechnical fabric may be used under the aggregate to minimize the
migration of stone into the underlying soil by heavy vehicle loads.
If the majority of mud is not removed by vehicles traveling over the rock pad, the tires of the
vehicle should be washed before entering a paved road. Wash water should be directed to a
settling area to remove sediments. A wash rack installed on the rock pad may make washing
more convenient and effective in removing sediment.
Specifications:
• The rock used for gravel pads should be a minimum 1 to 3 inch size, coarse aggregate
• Aggregate should be placed in a layer at least 6 inches thick. Generally, the larger the
aggregate, the better
• Rock entrance should be at least 50 ft. long: however, longer entrances may be required
to adequately clean tires.
• Geotextile fabric may be needed under the rock to prevent migration of mud from the
underlying soil into the stone.
• If tires are cleaned with water, the wash water should be directed to a suitable settling
area.
• A wash rack installed on the rock pad may make washing more convenient and effective.
The wash rack would consist of a heavy grating over a lowered area. The grating may be
a prefabricated rack, such as a cattle guard, or it may be constructed o site of structural
steel. In any case, the wash rack must be strong enough to support the vehicles that will
cross it.
• Culvert-A pipe or culvert shall be constructed under the entrance if needed to prevent
surface water flowing across the entrance from being directed out on to paved surfaces.
• Water Bar-a water bar shall be constructed as part of the construction entrance if needed
to prevent surface runoff from flowing the length f the construction entrance and out onto
paved surfaces
D23
Maintenance:
• In addition to the vehicle tracking pad, it is recommended that a street sweeper and
scraper be kept on site during construction operations and the street areas adjacent to the
tracking pad should be cleaned daily at the end of each construction day.
• New rock should be added to the tracking pad whenever the existing rock becomes
buried.
• If conditions on the site are such that the majority of the mud is not removed by the
vehicles traveling over the gravel, then the tires of the vehicles should be washed before
entering a public road.
• Wash water should be carried way from the entrance to a settling area to remove
sediment; a wash rack may also be used to make washing more convenient and effective.
• The rock entrance pad needs maintenance to prevent racking of mud onto paved roads.
This may require periodic top-dressing with additional rock or removal and reinstallation
of the pad. Areas used for sediment trapping may also need to be cleaned out.
• Top dressing of additional stone shall be applied as conditions demand. Mud spilled,
dropped, washed or tracked onto public roads, or any surface where runoff is not checked
by sediment controls, shall be removed immediately.
• The rock pad needs occasional maintenance to prevent the tracking of mud onto paved
roads. This may require periodic topdressing with addition rock or removal and
reinstallation of the pad.
D24
Vegetative Buffers
Description
Vegetated buffers area areas of either natural or established vegetation (i.e. agricultural fields or
otherwise re-vegetated areas) that are maintained to protect the water quality of neighboring
areas. Buffer zones reduce the velocity of storm water runoff, provide an area for the runoff to
permeate the soil, contribute to the ground water recharge, and act as filters to catch sediment.
The reduction in velocity also helps to prevent soil erosion.
Construction Specifications
1. Buffer widths should be determined after careful consideration of slope, vegetation, soils,
depth to impermeable layers, runoff sediment characteristics, type and quantity of storm
water pollutants, and annual rainfall. Buffer widths should increase as slope increases.
2. Mixed zones of vegetation are ideal, if available.
3. Direct sediment-laden water onto naturally vegetated ground.
4. Do not place any equipment, construction debris, or extra soil in the buffer area.
Maintenance Considerations
In construction phase BMPs will be inspected every 14 days or within 24 hours of a significant
storm event. In interim phase BMPs will be inspected every 30 days. Inspection of buffer areas is
most important during ground disturbance activities. Inspections should focus on encroachment,
gully erosion, density of vegetation, evidence of concentrated flows through the areas, and any
damage from foot or vehicular traffic. If there is more than six inches of sediment in one place, it
should be removed.
D25
Drill Seeding/Hand BroadcastSeeding
Description and Purpose
Areas of disturbance are inevitable and are the premise for storm water management. To ensure
the integrity of our water and vegetative communities as well as the security of our appreciable
aesthetic surroundings re-vegetating disturbed areas is essential to this desire. There are a variety
of methods that can be used to achieve the temporary and permanent vegetative cover required.
These seeding methods are to include:
• 1) Drill/Disc;
• 2) Broadcast; and
• 3) Hand (where applicable due to terrain and accessible distance).
1) Drill Seeding: This method consist of implementing the seed into the soil at a specific
depth. Drill seeding utilizes a drill or cultipack seeder to inject the seeds beneath the soil
surface. Seed depth is set based upon the seed type. Once the depth of the drill is
determined the seed is then inserted and covered. This method provides optimization of
seed placement to maximum seed contact with soil water.
2) Broadcast Seeding: This method of seeding scatters the seed at random on top of the soil
surface rather than placing seed within the soil. Broadcast Seeding provides more of a
native plant community than drill-seeded due to the randomly dispersal of seed. Seeing
rates are doubled when using this method.
3) Hand Broadcast: This method of seeding scatters the seed at random on top of the soil
surface by hand. Hand Broadcasting is used in areas of small disturbances and or
locations which are unattainable by other methods. The seed can be implemented by
scattering by hand or using a hand held broadcaster. Seeding rates are doubled when
using this method.
D26
Implementation
Typical seeding practices will be as follows:
• The permanent seed mix, rate, application method, and supplemental materials will be
determined by appropriated personnel or the BLM/Landowner as appropriate for the land
ownership. Generally, seeding will occur by broadcasting (hand and/or mechanical), or
drilling (where applicable with inclusion of a tackifier).
Design and Layout
Application rates and procedures typically used are included as Figure 1 in this section.
Additional seeding and mulching details are as follows:
General Standards and Specifications
• Prior to application, roughen embankment and fill areas by rolling with a
crimping or punching type roller or by track walking. Track walking shall
only be used where other methods are impractical.
Inspection and Maintenance
• Inspections will be on a 14 day cycle during construction and moved to a 30 day cycle
once the site has moved into interm reclamation.
• Areas should be identified where seed may have been damaged or removed. Such areas
should be repaired, reseeded, and re-mulched.
• Vegetation is considered complete when density of at least 70 percent of pre- disturbance
levels has been reached. Inspect before expected rain storms and repair any damaged
ground cover and re-areas of bare soil.
• Inspections should be continued until vegetation is firmly established
D27
Mulching
Description
Mulching is a temporary erosion control practice in which materials such as grass, hay, wood
chips, wood fibers, straw, or gravel are placed on exposed or recently planted soil surfaces.
Mulching stabilizes soils by minimizing rainfall impact and reducing storm water runoff
velocity. When used in combination with seeding or planting, mulching can aid plant growth by
holding seeds, fertilizers, and topsoil in place, preventing birds from eating seeds, retaining
moisture, and insulating plant roots against extreme temperatures.
Mulch mattings are materials such as jute or other wood fibers that are formed into sheets and
are more stable that loose mulch. Jute and other wood fibers, plastic, paper, or cotton can be used
individually or combined into mats to hold mulch to the ground. Netting can be used to stabilize
soils while plants are growing, although netting does not retain moisture or insulate against
extreme temperatures. Mulch binders consist of asphalt or synthetic materials that are sometimes
used instead of netting to bind loose mulches.
Construction Specifications
1. Site Preparation
a. Prior to mulching, install the necessary temporary or permanent erosion control
practices and drainage systems within or adjacent to the area to be mulched.
b. Slope, grade and smooth the site to fit needs of the selected mulch products.
c. Remove all undesirable stones and other debris to meet the needs of the
anticipated land use and maintenance required.
2. Mulching & Anchoring
a. Select the appropriate mulch and application rate that will best meet the need and
availability of material. When possible, organic mulches should be used for
erosion control and plant material established. All mulch should be certified weed
free.
b. Apply mulch after soil amendments and planting is accomplished or
simultaneously if hydro seeding is used.
c. Loose straw may be anchored using a crimper or tracked equipment. Mulch
material should be “tucked” into soil surface about 3”.
D28
Maintenance Considerations
Mulched areas should be inspected in accordance with the Storm Water Pollution Prevention
Plan is identify areas where mulch has loosened or been removed, especially after rainstorms.
Such areas should be reseeded (if necessary) and the mulch cover replaced immediately. Mulch
binders should be applied at rates recommended by the manufacturer. If washout, breakage, or
erosion occurs, surfaces should be repaired, reseeded, and mulched, and new netting should be
installed. Inspections should be continued until vegetation is firmly established.
Removal/Abandonment
Anchor netting and any other artificial mulch material should be removed when protection is no
longer needed and disposed of in a landfill.
D35
Surface Roughening
Description and Purpose
Surface roughening includes a variety of methods to create ridges, furrows, pocking or terraces
in the soil surface. The ridges, furrows, pocking or terraces run perpendicular to the slope and the
natural direction of runoff, slowing the runoff. Surface roughening helps to establish vegetative
cover, prevent erosion, allow for infiltration, and trap sediment by reducing runoff velocity.
Surface roughening can be used as a temporary or permanent BMP.
Implementation
Conditions of Practice
All slopes steeper than 4H:1V and greater than 5 vertical feet, as well as any bare soil requiring
some level of erosion prevention.
Design Criteria/Specifications
There are different methods for roughening the soil surface, and the selection of an appropriate
method depends on the type of slope and the desired temporary or permanent slope vegetative
treatment. The major consideration when using this BMP is to develop grooves or furrows that
lie perpendicular to (across) the slope.
The following criteria are for disturbed areas where existing vegetation has been removed:
• All vegetation sites require some surface roughening: stair step, grooving, furrowing,
pocking or tracking.
• Areas that will be mowed (slopes less than 3:1) may have small furrows parallel to the
slope contours (across the slope) left by discing, harrowing, raking, or other grooving
methods from seed planting machinery operated on the contour.
• Areas with vegetation that will not be mowed may be stair-step graded, grooved, pocked,
or left rough after filling.
• Slopes steeper than 2:1 shall be stair-stepped with benches (see Figure 4.5-A) or pocked.
Stair-step grading or pocking are also appropriate for soils containing large amounts of
rock. Each step or pock catches material that sloughs from above and provides a level site
to convey or detain drainage or establish vegetation. Stairs shall be wide enough to work
with standard earth-moving or maintenance equipment (12 feet minimum with no more
than 15% slope). Heights shall be slope specific, but shall not exceed 3 feet without
appropriate soils analysis or retaining structure support.
• Excessive compaction of soils shall be avoided during grubbing.
D36
• Tracking can compact soils, reducing infiltration. Tracking with a bulldozer is the least
preferred method of roughening; however it is better than not roughening at all. Tracking
shall be done up and down the slope to leave track tread indentations across the slope.
• Roughened soil surfaces shall be seeded and mulched as quickly as possible.
Inspection and Maintenance Specifications
• In construction phase BMPs will be inspected every 14 days or within 24 hours of a
significant storm event. In interim phase BMPs will be inspected every 30 days.
• Roughened areas without other cover shall be inspected after every rainstorm. If grooves,
pocks, or stair-steps fill in, leaving less than one-third of the original groove or stair
depth, the sediment shall be removed and the site re-roughened if necessary.
D37
Sources:
1. Minnesota Pollution Control Agency, 2000, Protecting Water Quality in Urban Areas:
Best Management Practices for Dealing with Storm Water Runoff from Urban, Suburban
and developing Areas of Minnesota. Minneapolis.
2. Center for Watershed Protection, 2001. “Stabilized Construction Entrance” fact sheet in
Storm water Manager’s Resource Center, www.stormwatercenter.net Ellicott City, MD.
3. Mecklenburg, D. 1996. Rainwater and Land Development. Division of Soil and Water
Conservation, Ohio Department of Natural Resources. Columbus.
4. Soil Conservation Service. 1987. “Temporary Rock Construction Entrance” fact sheet.
United States Department of Agriculture, Washington, D.C.
5. Minnesota Department of Transportation. 2000. Standard Specifications for
Construction. St. Paul.
Species lbs/ace PLS (Pure Live Seed)
Timothy 4.5
Smooth Brome 4.5
Tall Fescue 3.5
Annual Rye 2.5
Total lbs/acre 15.0 lbs/acre
Rate will be doubled for hand broadcast seeding
Species Lbs/acre PLS (Pure Live Seed)
Fourwing Saltbush 1.9
Shadscale 1.5
Galleta 2.5
Alkali Sacaton 0.2
Streambank Wheatgrass 2.5
Slender Wheatgrass 1.8
Sandberg Bluegrass 0.3
Total lbs/acre 10.7 lbs/acre
Rate will be doubled for hand broadcast seeding
Species Lbs/acre PLS (Pure Live Seed)
Indian Ricegrass 1.9
Galleta 2.5
Bluebunch Wheatgrass 2.8
Muttongrass 3.3
Sandberg Bluegrass 0.6
0.6
Total lbs/acre 11.7 lbs/acre
Rate will be doubled for hand broadcast seeding
Species Lbs/acre PLS (Pure Live Seed)
Thickspike Wheatgrass 3.4
Bluebunch Wheatgrass 3.7
Bottlebrush Squirreltail 2.7
Slender Wheatgrass 3.3
Canby Bluegrass 0.6
Mutton Bluegrass 0.6
Letterman Needlegrass 1.7
Columbia Needlegrass 1.7
Indian Ricegrass 1.9
Junegrass 0.1
Total lbs/acre 19.7
Rate will be doubled for hand broadcast seeding
Species Lbs/acre PLS (Pure Live Seed)
Mountain Brome 5.8
Slender Wheatgrass 3.3
Letterman Needlegrass 3.5
Blue Wildrye 4.8
Thickspike Wheatgrass 3.4
Idaho Fescue 1.2
Wheeler Bluegrass 0.6
Total lbs/acre 22.6
Rate will be doubled for hand broadcast seeding
Spruce-Fur/Mountain Meadow Seed Mix (BLM)
Ursa Dry Land Pasture Mix
Low Elevation Salt-Desert Scrub Seed Mix (BLM)
Pinyon-Juniper Woodland Seed Mix (BLM)
Mixed Mountain Shrubland Seed Mix (BLM)
Appendix F - Site Specific Stormwater
Management Plan
Project Name (Site): Speakman A Well Pad Field Name: Battlement Mesa
Latitude: 39.420663° Longitude: -108.056968°
CDPS Permit Number: COR03K566 Inspection Type: 14 Day
Phase: Temporary Interim
Name of Receiving Water: Dry Creek, Ultimately the Colorado River
Estimated Distance to Receiving Water: 0.41 miles, 0.5 miles respectively
Twp, Sec, Range: T-7-S R-96-W, Section 24 SW ¼
Major Erosion Control Facilities/Structures (BMPs) Utilized at Site: Vegetative Buffer,
Diversion Ditch, Berm, Sediment Basin, and Jute Matting.
Estimate of Total Area of Site: 8.7 acres
Estimate of Disturbed Acres of Site: 8.7 acres
Soil Types: Potts Loam (6 to 12% slopes
Permeability: Moderate to rapid
Soil Erosion Potential: Moderate to severe
Existing Vegetation Description: Wheat grass, needle and thread, and sagebrush
Final Stabilization Date: Not yet determined
Estimate of Percent Vegetative Ground Cover: 0%
Seed Mix for Interim Final Reclamation: BLM Low Elevation Seed Mix or Landowner Seed
Mix
Description of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Location of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Comments: The Speakman A well pad is currently in the temporary interim phase where the
disturbed areas not required for routine operations have been seeded or graveled, and permanent
BMPs have been installed. The project will enter into interim reclamation when the temporary
interim phase is completed. Temporary BMPs that were implemented during the construction
phase may continue to be maintained during temporary interim and interim reclamation. Projects
will remain in interim reclamation until disturbed areas have been reclaimed to 70% of pre-
disturbance conditions or otherwise permanently stabilized (i.e. graveled).
Amended 07-01-2014
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Date Saved: 1/21/2014 2:27:00 PMDocument Path: T:\Client_Specific\2008\Ursa Resources\Stormwater\Locations\Speakman A\Speakman A BMP Map.mxd
39.420780 -108.060256Location: Speakman A
Stormwater Site Map
PermanentDiversion
±
0 10050
Feet
[\[\[\Riprap
Sediment Basin
Well Pad Surface
Topsoil Berm
Pad Disturbance
Pad Disturbance Area:4.240 acres
Top SoilStockpile
Wattle
Appendix F - Site Specific Stormwater
Management Plan
Project Name (Site): Tompkins Well Pad Field Name: Battlement Mesa
Latitude: 39.420663° Longitude: -108.056968°
CDPS Permit Number: COR03K566 Inspection Type: 14 Day
Phase: Construction Estimate of Total Area of Site: 4.8 acres
Name of Receiving Water: Unnamed drainages, Ultimately the Colorado River
Estimated Distance to Receiving Water: 0.41 miles, 0.5 miles respectively
Twp, Sec, Range: T-7-S R-96-W, Section 24 SW ¼
Major Erosion Control Facilities/Structures (BMPs) Utilized at Site: This is a “no discharge”
location. Please see phases below for BMP description.
Soil Types: Potts Loam (6 to 12% slopes), Potts-Ildefonso Complex (12-25% slopes)
Permeability: Moderate to rapid Soil Erosion Potential: Moderate to severe
Existing Vegetation Description: Wheat grass, needle and thread, and sagebrush
Final Stabilization Date: TBD Estimate of Percent Vegetative Ground Cover: 60%
Seed Mix for Temporary, Interim Final Reclamation: Ursa Dry Pasture Seed Mix or
Landowner Seed Mix
Description of Non-SW Discharge Components (e.g., Springs, Irrigation): Springs (Town of
Parachute Water Shed)
Location of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Phased BMPs
Construction:
A straw bale barrier has been installed on the north side of the location running from east
to west (please refer to site map for location).
Wattles will be installed as necessary in the mouth of the drainages on the north side of
the location.
County road 309 and pad entrance will be cleared daily of any sediment that is tracked
from location via a sweeper.
Topsoil will be utilized in the construction of the berm on the north side of location.
A sediment pond will be installed on the northwest side of location. Sediment pond has
been designed for a 100 year precipitation event.
Berm/diversion ditch will direct water along the west, east and north sides of location
into the sediment pond.
A diversion ditch to divert run-on water will be installed on the south side of the site.
Rock armoring will be installed at the terminus ends of the diversion ditch.
Large boulders have been placed on the northeast side of pad to assist with erosion and
also increase pad stability.
Berm/ditch on south side of location to sediment pond will be armored with rock as
applicable.
Bentonite will be applied to the pad surface after sub grading is complete. Bentonite will
be applied at approximately four (4) inches in depth.
Bentonite will also be applied in the sediment pond to ensure an impermeable bottom.
Gravel will be applied to the pad’s surface as final grade.
A drive over berm or swale will be installed at the pad’s entrance to ensure full
containment.
Portable lavatories will be placed inside the pad containment and will be staked down.
Post Construction:
Upon completion of pad construction, temporary stormwater structures that are no longer
a viable BMP will be removed.
All permanent BMPs installed during construction phase will remain on site for the life-
time of the pad.
Monitoring:
Inspections will occur every 7 days and after a significant precipitation event.
Inspections will be conducted by a certified person familiar with the site specific control
measures and COAs of the pad.
Inspections will cover the following:
o Disturbed area;
o All BMPs, temporary and permanent;
o Materials storage areas;
o Down gradient areas;
o Surface water diversions;
o Access road; and
o Pad entrance.
Inspections will be conducted on a weekly basis when operations are active on site.
Maintenance Procedures:
Maintenance will include prompt repairs and/or adjustments to any erosion and sediment control
structures that are deteriorating or found to be performing inadequately. BMP conditions and
dates of BMP maintenance will be document within the stormwater inspection checklists.
Comments:
Amended 10/31/14
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~ 1.70 Acres
~ 3.06 Acres
Proposed Intercept Ditch/Armor(not yet constructed)
Proposed Culvert(not yet installed)
Stormwater Site MapStormwater Site MapTompkins
39.45995 -108.01407Section 5, Township 7 South, Range 95 West
±Author: M. Spinelli
Revision: 0
Date: 11/3/2014
0 100 200
Feet
kkkk Brush Barrier
Straw Bale Barrier
Temporary Berm
[\[\Riprap
Access Road Area of Disturbance
Riprap Channel
Sediment Pond
Notes / Comments:
Planned WorkingSurface
* Map will be amended upon
completion of construction.
Appendix F - Site Specific Stormwater
Management Plan
Project Name (Site): Monument Ridge Well Pad Field Name: Battlement Mesa
Latitude: 39.431208° Longitude: -108.033248°
CDPS Permit Number: COR03K566 Inspection Type: 14 Day
Phase: Temporary Interim
Name of Receiving Water: Dry Creek, Ultimately the Colorado River
Estimated Distance to Receiving Water: 0.41 miles, 0.5 miles respectively
Twp, Sec, Range: T-7-S R-95-W, Section 18 SE ¼ ,SE ¼
Major Erosion Control Facilities/Structures (BMPs) Utilized at Site: Vegetative Buffer,
Culvert, Diversion Ditch, Berm, and Sediment Basin
Estimate of Total Area of Site: 4.9 acres
Estimate of Disturbed Acres of Site: 4.9
Soil Types: Potts Loam (6 to 12% slopes
Permeability: Moderate to rapid
Soil Erosion Potential: Moderate to severe
Existing Vegetation Description: Wheat grass, needle and thread, and sagebrush.
Final Stabilization Date: TBD
Estimate of Percent Vegetative Ground Cover: 0%
Seed Mix for Interim Final Reclamation: Ursa Dryland Pasture
Description of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Location of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Comments: The Monument Ridge well pad is currently in the temporary interim phase.
Construction has been completed and temporary BMPs have been implemented. The site will
remain in the temporary interim reclamation phase until the facility has been reclaimed and
recontoured excluding areas required for routine operations and maintenance. Final stabilization
will be achieved when areas have been reclaimed to 70% of pre-disturbance conditions or
otherwise permanently stabilized (i.e. graveled).
Revised: 07/01/14
Source: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP,
swisstopo, and the GIS User Community
Date Saved: 10/3/2013 6:18:50 PMDocument Path: T:\Client_Specific\2008\Ursa Resources\Stormwater\Locations\Monument Ridge\Monument Ridge BMP Map.mxd
PermanentDiversion
Sediment Basin
Access Road
39.431208 -108.033248Location: Monument Ridge
Stormwater Site Map
±
0 15075
Feet
Well Pad Surface
Pad Disturbance
Pad Disturbance Area:4.944 acres
Culvert
Permanent Berm
Appendix F - Site Specific Stormwater
Management Plan
Project Name (Site): Watson Ranch Well Pad Field Name: Battlement Mesa
Latitude: 39.432942° Longitude: -108.025021°
CDPS Permit Number: COR03K566 Inspection Type: 30 Day
Phase: Interim
Name of Receiving Water: Unnamed drainage, Ultimately the Colorado River
Estimated Distance to Receiving Water: 0.34 miles, 1.24 miles respectively
Twp, Sec, Range: T-7-S R-95-W, Section 17
Major Erosion Control Facilities/Structures (BMPs) Utilized at Site: Vegetative Buffer,
Graveled Surface.
Estimate of Total Area of Site: ~2 acres
Estimate of Disturbed Acres of Site: ~2 acres
Soil Types: Potts Loam (6 to 12% slopes)
Permeability: Moderate to moderately rapid
Soil Erosion Potential: Moderate to severe
Existing Vegetation Description: Wheat grass, needle and thread, and sagebrush.
Final Stabilization Date: Not yet determined
Estimate of Percent Vegetative Ground Cover: 50%, please note that while berms and top soil
stockpiles have been revegetated; the site has not undergone final reclamation processes and is
therefore not eligible for final reclamation status.
Seed Mix for Interim Final Reclamation: Ursa Dryland Seed Mix
Description of Non-SW Discharge Components (Springs, Irrigation): Unnamed Irrigation
Ditches
Location of Non-SW Discharge Components (Springs, Irrigation): One of the irrigation
ditches is located ~ 158 feet to the north of the well pad. The other irrigation ditch is located ~
312 feet to the south of the well pad.
Comments: The Watson Ranch well pad is currently in the interim phase. The top soil stock
piles have been seeded and mulched. Temporary BMPs that were implemented during the
construction phase may continue to be maintained during the interim and interim reclamation
phases. Projects will remain in interim reclamation until disturbed areas have been reclaimed to
70% of pre-disturbance conditions or otherwise permanently stabilized (i.e. graveled).
Amended 07/01/2014
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swisstopo, and the GIS User Community
Date Saved: 2/5/2014 11:09:00 AMDocument Path: T:\Client_Specific\2008\Ursa Resources\Stormwater\Locations\Watson Ranch\Watson Ranch BMP Map.mxd
Area Between Pad Well Surface and
Disturbance is Pocked
Sediment Basin
Access Road
39.433042 -108.025195Location: Watson Ranch
Stormwater Site Map
±
0 200100
Feet
Well Pad Surface
Pad Disturbance
Pad Disturbance Area:2.428 acres
Culvert
Wattles
Appendix F - Site Specific Stormwater
Management Plan
Project Name (Site): Yater Well Pad Field Name: Battlement Mesa
Latitude: 39.435131° Longitude: -108.026428°
CDPS Permit Number: COR03K566 Inspection Type: Pre-Construction
Phase: Pre-Construction
Name of Receiving Water: Monument Gulch, Unnamed Tributaries, Ultimately the Colorado
River
Estimated Distance to Receiving Water: 0.41 miles, 500 feet, 0.7 miles respectively
Twp, Sec, Range: T-7-S R-95-W, Section 17
Major Erosion Control Facilities/Structures (BMPs) Utilized at Site: Vegetative Buffer,
Culvert, Diversion Ditch, Berm, and Sediment Basin
Estimate of Total Area of Site: 5.02 acres
Estimate of Disturbed Acres of Site: 5.02
Soil Types: Potts Loam (6 to 12% slopes, Potts Ildefonso Complex (12-25% slopes)
Permeability: Moderate to rapid
Soil Erosion Potential: Moderate to severe
Existing Vegetation Description: Wheat grass, needle and thread, and sagebrush.
Final Stabilization Date: TBD
Estimate of Percent Vegetative Ground Cover: 60% pre-disturbance
Seed Mix for Interim Final Reclamation: Ursa Dryland Pasture
Description of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Location of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Comments: Pad is currently in planning stage. Site Specific Plan will be amended once
construction has commenced.
Revised:
"Û"Yater
Author: M. Spinelli
Revision: 0
Date: 12/2/2014±
Notes / Comments:
Stormwater BMP NotesStormwater BMP NotesYater39.435125 -108.026382Section 17, Township 7 South, Range 95 West
Original diagram produced by River Valley Survey.Notes (in red) provided by HRL Compliance Solutions.
0 1 2
Miles
T:\CLIENTS\URSA\BATTLEMENT MESA\YATER\STORMWATER\Yater BMP notes.mxd
Appendix F - Site Specific Stormwater
Management Plan
Project Name (Site): BMC B Well Pad Field Name: Battlement Mesa
Latitude: 39.438909° Longitude: -108.046717°
CDPS Permit Number: COR03K566 Inspection Type: Pre-Construction
Phase: Pre-Construction
Name of Receiving Water: Monument Ridge Gulch, Ultimately the Colorado River
Estimated Distance to Receiving Water: ~ 1,000 feet, ~500 feet respectively
Twp, Sec, Range: T-7-S R-95-W, Section 18
Major Erosion Control Facilities/Structures (BMPs) Utilized at Site: Vegetative Buffer,
Culvert, Diversion Ditch, Berm, and Sediment Basin (BMPs to be determined upon completion
of final layout)
Estimate of Total Area of Site: 4.7
Estimate of Disturbed Acres of Site: 4.7
Soil Types: Arvada loam (6 to 20% slopes)
Permeability: Very slow
Soil Erosion Potential: severe
Existing Vegetation Description: Sagebrush, greasewood and wheatgrass.
Final Stabilization Date: TBD
Estimate of Percent Vegetative Ground Cover: 30%
Seed Mix for Interim Final Reclamation: Ursa Dryland Pasture
Description of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Location of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Comments:
Revised:
"Û"BMC B
Author: M. Spinelli
Revision: 0
Date: 12/3/2014±
Notes / Comments:
Stormwater BMP NotesStormwater BMP NotesBMC B39.43894 -108.04647Section 18, Township 7 South, Range 95 West
Original diagram producedby River Valley Survey.
Notes provided byHRL Compliance Solutions.
0 1 2
Miles
T:\CLIENTS\URSA\BATTLEMENT MESA\BMC B\STORMWATER\BMC B BMP notes.mxd
Appendix F - Site Specific Stormwater
Management Plan
Project Name (Site): BMC D Well Pad Field Name: Battlement Mesa
Latitude: 39.441549° Longitude: -108.040769°
CDPS Permit Number: COR03K566 Inspection Type: 14 Day
Phase: Pre-Construction
Name of Receiving Water: Unnamed drainages, Ultimately the Colorado River
Estimated Distance to Receiving Water: ~ 500 feet, ~1/4 mile respectively
Twp, Sec, Range: T-7-S R-95-W, Section 18
Major Erosion Control Facilities/Structures (BMPs) Utilized at Site: Vegetative Buffer,
Culvert, Diversion Ditch, Berm, and Sediment Basin (BMPs to be determined upon completion
of final layout)
Estimate of Total Area of Site: TBD
Estimate of Disturbed Acres of Site: TBD
Soil Types: Potts loam (6 to 12% slopes)
Permeability: Moderate
Soil Erosion Potential: severe
Existing Vegetation Description: Wheatgrass, needlethread, and sagebrush.
Final Stabilization Date: TBD
Estimate of Percent Vegetative Ground Cover: 30%
Seed Mix for Interim Final Reclamation: Ursa Dryland Pasture
Description of Non-SW Discharge Components (e.g., Springs, Irrigation): TBD
Location of Non-SW Discharge Components (e.g., Springs, Irrigation): TBD
Comments:
Revised:
"Û"BMC D
Author: M. Spinelli
Revision: 0
Date: 12/3/2014±
Notes / Comments:
Stormwater BMP NotesStormwater BMP NotesBMC D39.44145 -108.04075Section 18, Township 7 South, Range 95 West
Original diagram produced by River Valley Survey.Notes provided by HRL Compliance Solutions.
0 1 2
Miles
T:\CLIENTS\URSA\BATTLEMENT MESA\BMC D\STORMWATER\BMC D BMP notes.mxd
Appendix F - Site Specific Stormwater
Management Plan
Project Name (Site): Watson Ranch B Well Pad Field Name: Battlement Mesa
Latitude: 39.43351° Longitude: -108.022632°
CDPS Permit Number: COR03K566 Inspection Type: Pre-Construction
Phase: Pre-Construction
Name of Receiving Water: Monument Gulch, unnamed drainages, Ultimately the Colorado
River
Estimated Distance to Receiving Water: 0.27 miles,0.32 miles, 1.24 miles respectively
Twp, Sec, Range: T-7-S R-95-W, Section 17
Major Erosion Control Facilities/Structures (BMPs) Utilized at Site: Vegetative Buffer,
Graveled Surface.
Estimate of Total Area of Site: ~10.82 acres
Estimate of Disturbed Acres of Site: ~10.82 acres
Soil Types: Potts Loam (6 to 12% slopes), Potts Ildefonso Complex (12-25% slopes)
Permeability: Moderate to moderately rapid
Soil Erosion Potential: Moderate to severe
Existing Vegetation Description: Wheat grass, needle and thread, and sagebrush.
Final Stabilization Date: Not yet determined
Estimate of Percent Vegetative Ground Cover: 60% pre-disturbance.
Seed Mix for Interim Final Reclamation: Ursa Dryland Seed Mix
Description of Non-SW Discharge Components (Springs, Irrigation): Unnamed Irrigation
Ditches
Location of Non-SW Discharge Components (Springs, Irrigation): Irrigation ditches will be
rerouted to the outer edge of pad on the north and south side.
Comments: Pad is currently in planning stage. Site specific plan will be amended once
construction has commenced.
Amended
"Û"Watson Ranch B
Author: M. Spinelli
Revision: 0
Date: 12/2/2014±
Notes / Comments:
Stormwater BMP NotesStormwater BMP NotesWatson Ranch B39.433335 -108.023363Section 17, Township 7 South, Range 95 West
Original diagram produced by River Valley Survey.Notes (in red) provided by HRL Compliance Solutions.
0 1 2
Miles
T:\CLIENTS\URSA\BATTLEMENT MESA\WATSON RANCH B\STORMWATER\Watson Ranch B BMP notes.mxd
Appendix F - Site Specific Stormwater
Management Plan
Project Name (Site): Monument Ridge ROW Field Name: Battlement Mesa
Latitude: 39.4325° Longitude: -108.0253°
CDPS Permit Number: COR03K566 Inspection Type: 30 Day
Phase: Interim
Name of Receiving Water: Dry Creek, Ultimately the Colorado River
Estimated Distance to Receiving Water: 0.41 miles, 0.5 miles respectively
Twp, Sec, Range: T-7-S R-95-W, Section 18 SE ¼ ,SE ¼
Major Erosion Control Facilities/Structures (BMPs) Utilized at Site: Vegetative Buffer,
Culvert, water bars, surface roughening
Estimate of Total Area of Site: 4.0 acres
Estimate of Disturbed Acres of Site: 4.0
Soil Types: Potts Loam (6 to 12% slopes
Permeability: Moderate to rapid
Soil Erosion Potential: Moderate to severe
Existing Vegetation Description: Wheat grass, needle and thread, and sagebrush.
Construction End Date: TBD
Estimate of Percent Vegetative Ground Cover: 0%
Seed Mix for Interim Final Reclamation: Ursa Dryland Pasture
Description of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Location of Non-SW Discharge Components (e.g., Springs, Irrigation): None
Comments: The Monument Ridge ROW is currently in the interim phase. Construction has been
completed, ROW has been seeded and is being monitored for initial growth. The facility will
remain in the interim phase until disturbed areas have been reclaimed to 70% of pre-disturbance
conditions or otherwise permanently stabilized (i.e. graveled).
Revised: 0\7/01/14
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swisstopo, and the GIS User Community
Date Saved: 2/5/2014 11:46:35 AMDocument Path: T:\Client_Specific\2008\Ursa Resources\Stormwater\Locations\Watson Ranch to Monument Ridge ROW\Watson Ranch to Monument Ridge ROW BMP Map.mxd
Stormwater Site Map
Seeded Area
Wattles
Location: Watson Ranchto Monument Ridge ROW
±
0 400200
Feet
39.430615 -108.027317
Stormwater BMP Map
±
Table 1 - SWMP - REVISION SHEET
Review Date Representative/Designee Printed Name Representative/Designee
Signature
Type of revision (e.g. SWMP text, site
modification, etc.)
SWMP
Amended (Y/N)
5/7/2013 Nadia Almuti Initial SWMP Drafting N/A
5/22/2013 Tanner Ridgway SWMP Amendments Yes
11/8/2013 Kay Lambert Amendments to Appedices. Yes
1/16/2014 Kay Lambert Amendments to Ap F, Body of SWMP,
Section 4 BMPs, added MR ROW Yes
7/1/2014 Finn Whiting Amendments to Ap F, Formatting, & Maps Yes