HomeMy WebLinkAboutEAST RIDGE 2ND FILING - FDP - FDP160006 - REPORTS - STORMWATER MANAGEMENT PLANStorm Water Management Plan
East Ridge Second Filing
Residential and Mixed-Use
Timberline Road and Vine Drive
Project Owner:
Hartford Homes
Attention: Landon Hoover
4801 Goodman Road
Timnath, Colorado 80547
Phone: (970) 674-1109
Prepared By:
Galloway & Company, Inc.
3760 East 15th Street, Suite 202
Loveland, Colorado 80538
Contact: James Prelog, P.E.
Phone: (303) 770-3636
SWMP Preparation Date: February 1st, 2016
SWMP Revised Preparation Date: March 23rd, 2016
Estimated Project Dates:
Project Start Date: April 2016 (est.)
Project Completion Date: To Be Determined
Project Owner/Developer Signature Block
I have reviewed the information contained within the Storm water Management Plan and
accept
responsibility for the requirements set forth.
_________________________________ __________________
Permittee/Affiliation Date
Hartford Homes
Plan Preparer Signature Block
I acknowledge my responsibility for the preparation of the Stormwater Management Plan.
__________________________________ __________________
CO Professional Engineer Date
Name | Colorado PE Number
STANDARD EROSION AND SEDIMENT CONTROL NOTES
1) The City Stormwater Department erosion control inspector must be notified at least 24 hours
prior to any construction on this site.
2) All required BMPs shall be installed prior to any land disturbing activity (e.g., stockpiling,
stripping, grading, etc). All of required erosion control measures must be installed at the
appropriate time in the construction sequence as indicated in the approved project schedule,
construction plans, and erosion control report.
3) Pre-disturbance vegetation shall be protected and retained wherever possible. Removal or
disturbance of existing vegetation shall be limited to the area required for immediate
construction operations, and for the shortest practical period of time.
4) All soils exposed during land disturbing activity (stripping, grading, utility installations,
stockpiling, filling, etc.) shall be kept in a roughened condition by ripping or disking along land
contours until mulch, vegetation or other permanent erosion control is installed. No soils in
areas outside project street rights-of-way shall remain exposed by land disturbing activity for
more than thirty-(30) days before required temporary or permanent erosion control (e.g.
seed/mulch, landscaping, etc.) is installed, unless otherwise approved by the Stormwater
Department.
5) The property must be watered and maintained at all times during construction activities so
as to prevent wind-caused erosion. All land disturbing activities shall be immediately
discontinued when fugitive dust impacts adjacent properties, as determined by the City
Engineering Department.
6) All temporary (structural) erosion control measures must be inspected and repaired or
reconstructed as necessary after each runoff event and every 14 days in order to assure
continued performance of their intended function. All retained sediments, particularly those on
paved roadway surfaces, shall be removed and disposed of in a manner and location so as not
to cause their release into any drainage way.
7) No soil stockpile shall exceed ten-(10) feet in height. All soil stockpiles shall be protected
from sediment transport by surface roughening, watering and perimeter silt fencing. Any soil
stockpile remaining after 30 days shall be seeded and mulched.
8) City Ordinance prohibits the tracking, dropping or depositing of soils or any other material
onto city streets by or from any vehicle. Any inadvertent deposited material shall be cleaned
immediately by the contractor.
9) Additional notes can (should) be added to reflect the erosion/sediment control plan of the
individual development.
TABLE OF CONTENTS
SECTION 1 SITE DESCRIPTION
i. Site Location
ii. Description of Adjacent Areas
a) Nature and Purpose of Construction Activity
b) Construction Sequence of Major Activities
c) Area of Disturbance
d) Topography, Soils, and Rainfall Data
e) Existing Vegetation
f) Potential Sources of Pollution
g) Non-Stormwater Discharges
h) Receiving Waters
i) Site Features and Sensitive Areas to be Protected
j) Other Applicable Federal, State or Local Programs, Regulations or Restrictions
VICINITY MAP
SECTION 2 DESIGN DRAWINGS
SECTION 3 STORMWATER MANAGEMENT CONTROLS
a) SWMP Administrator and Important Contacts
b) Identification of Potential Pollutant Sources
c) BMPs for Storm water Pollution Prevention
d) Phase Construction Activity and BMP Implementation
e) Hazardous Material Handling and Spill Prevention
SECTION 4 FINAL STABILIZATION AND LONG TERM STORMWATER MANAGEMENT
a) Final Stabilization Measures
b) Seed Mix Information
c) Final Stabilization Notes
SECTION 5 INSPECTIONS AND MAINTENANCE
APPENDIX A - Floodplain information (N/A)
APPENDIX B - Soils Information
APPENDIX C - Erosion and Sediment Control Escrow/Security Calculations
APPENDIX D - Construction Sequence Matrix
APPENDIX E - Best Management Practice (BMP) Details
APPENDIX F - Colorado Discharge Permit System (CDPS) Application
APPENDIX G - Sample Inspection Log
APPENDIX H - Site Map and Design Drawings
SECTION 1 SITE DESCRIPTION
i. Site Location
East Ridge Second Filing (hereafter referred to as “the site”) will be located southeast
of the intersection of East Vine Drive and Timberline Road. More specifically, the site is
located in the Northeast Quarter of Section 8, Township 7 North, Range 68 West in the
City of Fort Collins, County of Larimer and State of Colorado. Refer to Appendix A for a
Vicinity Map.
Project Coordinate Location:
· Longitude 105°01'29.3"W
· Latitude 40°35'32.8"N
CDPS Permit #: To Be Determined
*A copy of the permit is available in Appendix F
ii. Description of Adjacent Areas
The site is bounded on north by the Burlington Northern Railroad and East Vine Drive; on
the south by an existing gravel mining operation (i.e., Barker Property); on the east by
undeveloped agricultural land; and on the west by Timberline Road and Collins Aire Park –
a mobile home park. The Larimer-Weld Canal is located north of the site, and the Lake
Canal, which will serve as the temporary outfall, is located to the south.
The project site consists of ±153.29 acres. It is currently a vacant and undeveloped tract of
land used for agriculture. The existing grades in the north half of the site average one
percent while the existing grades in the south half are steeper and average three percent.
The maximum elevation difference across the site is ±27 feet. The excess surface runoff
generally flows south and into an existing low lying wetland area in the south central region
of the site. The existing low area has no natural outfall.
A. NATURE AND PURPOSE OF CONSTRUCTION ACTIVITY
The purpose of this construction activity is to prepare the site for single and multi-family
residential housing construction. Construction activity common to this type of development
include: grubbing, rough grading, installing underground utility mains and service extensions,
constructing internal roadways and establishing finished grade across the site.
B. CONSTRUCTION SEQUENCE OF MAJOR ACTIVITIES
- Estimated project start date: April 2016
- Estimated project completion date: To Be Determined
Major Phases of Construction:
* Refer to Appendix D for the Construction Sequence Matrix.
* Refer to Appendix H for a copy of the Phasing Plan sheets.
- Install initial erosion and sediment controls, such as silt fence and vehicle tracking
control prior to any earth disturbing activity.
- Overlot grade the site. This will include grading the stormwater quality features and
detention pond. Future phases of the development should will be seeded and mulched.
- Install Phase I utilities (e.g., domestic water, sanitary sewer and storm sewer)
- Construct Phase I internal roadways.
- Additional erosion and sediment control measures will be installed as the underground
storm drain system is constructed. For example, Inlet Protection (IP) will be placed at
newly constructed Type ‘R’ curb inlets.
- Erosion and sediment control measures will remain in place until final stabilization has
been achieved. The contractor will prepare a detailed construction sequence, including
BMP installation timing, for inclusion in the SWMP.
Final stabilization is anticipated to be performed by the installation of landscaping materials
and seeding where required by the landscape plans. Refer to Appendix H and sheet LS103.
C. AREA OF DISTURBANCE
The total area of the site within the project boundaries is ±153.29 acres. The overlot grading,
utility installation and roadway construction will account for approximately XX acres of land
disturbance within the project.
Earthwork estimates:
- Cut of 297,847 cubic yards
- Fill of 292,751 cubic yards
- Net Cut of 5,096 cubic yards
D. TOPOGRAPHY, SOILS AND RAINFALL DATA
The existing grades in the north half of the site average one percent. The existing grades in
the south half are steeper and average three percent. The existing runoff generally flows to an
existing low lying wetland area in the south central region of the site. This low area has no
natural outfall. The maximum elevation difference across the site is ±27 feet (4956 – 4929).
According to the USDA NRCS Web Soil Survey, ‘Fort Collins loam, 0 to 3 percent slopes’
covers roughly two-thirds of the project site. This soil is associated with Hydrologic Soil Group
(HSG) ‘C’. HSG ‘C’ soils have a slow infiltration rate when thoroughly wet and consist chiefly of
soils having a layer that impedes the downward movement of water or soils of moderately fine
texture or fine texture. These soils have a slow rate of water transmission. The remainder of
the site consists of a mix of HSG ‘B’ and ‘C’ soils.
Normal Monthly Precipitation Table in Inches
Jan Feb Mar Apr May June July Aug. Sept. Oct. Nov. Dec.
0.36 0.48 1.18 1.97 2.74 1.83 1.62 1.42 1.27 1.13 0.59 0.49
Source: www.wrcc.dri.edu/cgi-bin/cliMAIN.pl?co3005
Impervious and Runoff Coefficients
Percentage impervious area before construction: 0%
Runoff coefficient before construction (C2): 0.20
Percentage impervious area after construction (grading): 65%
Runoff coefficient after construction (C2): 0.70
E. EXISTING VEGETATION
The site was used for agriculture, growing alfalfa. The ground cover across the existing site
consists of native grasses and weeds. The existing percent vegetation cover very good, ±75%.
For a site of this size, the number of existing trees is limited; only a few along Timberline Road
and the natural low point.
F. POTENTIAL POLLUTION SOURCES
During construction there is potential for pollution from grading, utility and roadway
construction activities. Most importantly, these are earth disturbing activities. The potential for
pollution arises not just from grading and excavation but also equipment and material staging
areas, equipment refueling and maintenance, equipment washing and the on-site use of
paints, solvents and other chemicals common to this type of construction activity. Pollution can
occur when the aforementioned are exposed to rainfall and/or runoff. The contact can
contaminate Stormwater.
Additionally there is a potential for pollution from the concrete washout area, worker’s trash
and portable toilets. Since the location of this potential pollution is dictated by the current
construction activity, they will be shown and updated on the Site Maps by the Contractor.
G. NON-STORMWATER DISCHARGES
All discharges covered by this permit shall be composed entirely of stormwater associated with
construction activity. There are however, several exceptions including uncontaminated springs,
landscape irrigation return flow, construction dewatering and concrete washout. The SWMP
should address the location and description of any anticipated allowable sources of non-
stormwater discharge at the site.
A designated contained Concrete Washout Area (CWA) is located on the Site Map. The
infiltration discharge of concrete wash water will not be allowed on this construction site. To
avoid infiltration of concrete washout wastewater a plastic liner needs to be installed at the
CWA per the detail drawing or a pre-fabricated container needs to be utilized from which all
liquids and solids can be recovered and disposed of at appropriately licensed off-site disposal
facilities. Under the general permit, concrete washout water cannot be discharged to surface
waters or to storm sewer systems without separate permit coverage.
H. RECEIVING WATERS
The developed site will drain to a proposed detention pond. The detention pond will be
constructed in the same location as the existing wetland area. The temporary pond outfall will
pump detained ±1050 l.f. south to the Lake Canal Ditch. Five-(5) stormwater quality features
will surround the detention pond. These proposed features include: a Grass Swale (GS), two-
(2) Extended Detention Basins (EDB) and two-(2) Sand Filters (SF). Developed site runoff will
pass through one of the stormwater quality features before it flows into the detention pond.
We are in the process of developing a design for the permanent outfall. At a high level, we
anticipate the outfall will convey detained runoff west to the west side of Timberline Road and
then south to Dry Creek.
The wetland area disturbance and enhancement guidelines and details are described in a
report prepared by Cedar Creek Associates.
I. SITE FEATURES AND SENSITVE AREAS TO BE PROTECTED
The developed site will drain to a proposed on-site detention pond. The lowest region of the
detention pond is an active wetland and is considered a sensitive area to be protected.
Therefore, the developed site runoff must pass through a stormwater quality feature before it
enters the proposed on-site detention pond. Additional details concerning this area are
available in a report prepared by Cedar Creek Associates.
J. OTHER APPLICABLE FEDERAL, STATE OR LOCAL PROGRAMS,
REGULATIONS OR RESTRICTION
No other applicable restrictions apply. We are not aware of endangered species and the site is
not designated as a historical site.
SITE MAPS
Refer to Appendix H for Site Maps
Erosion Control | EC01 and EC02
VICINITY MAP
Vicinity Map - East Ridge Second Filing
Not to Scale
Larimer-Weld Canal
East Ridge
Second Filing
Project Site
Lake Canal
SECTION 2: DESIGN DRAWINGS
Refer to Appendix H for Design Drawings
Phasing Plan | PH01 and PH02
Overall Grading Plan | OG02
Overall Landscape Plan | LS103
SECTION 3: STORMWATER MANAGEMENT CONTROLS
A. SWMP ADMINISTRATOR AND IMPORTANT CONTACTS
The SWMP Administrator is responsible for developing, implementing, maintaining and
revising the SWMP. The Contractor shall designate a SWMP Administrator which will be the
contact for all SWMP related issues and the person responsible for its accuracy, completeness
and implementation. The SWMP Administrator should be a person with authority to adequately
manage and direct day-to-day stormwater quality management activities at the site.
The SWMP Administrator is responsible for holding a weekly storm water meeting attended by
the General Contractor with all contractors and subcontractors involved in earth disturbing
activities to review the requirements of the Permit(s), the SWMP and address any problems
that have arisen in implementing the SWMP or maintaining the BMPs. The Contractor shall
maintain a log of all weekly meetings and document the issues addressed in the meetings.
B. IDENTIFICATION OF POTENTIAL POLLUTANT SOURCES
Potential pollutant sources for this site include:
· Disturbed and Stored Soils: The site will be grubbed and overlot graded prior to major
utility and roadway construction. The overlot grading work will occur across the site (i.e.,
all phases of development). All future phases should then receive temporary seeding
and mulching within 7 days of the last disturbance if no further disturbance is expected
for at least 14 days. Place sediment control BMPs. Additional strategies for minimizing
erosion and sediment control can be found in Stockpile Management (SP).
· Vehicle Tracking of Sediments: There is potential for tracking of soils between the
beginning of the grading process and the final stabilization of the site. Vehicle Tracking
Control (VTC) is to be installed prior to land disturbance activities and sweeping is to
take place as needed. Vehicle access to the exposed and disturbed subgrade will be
limited primarily to roll on/off earthmoving equipment and heavy materials delivery
trucks. The SWMP Administrator is responsible for ensuring that access to exposed
subgrade is limited, both in quantity and in timing relative to the tracking susceptibility of
the soil as it relates to moisture content. The SWMP Administrator must keep the
adjacent parking areas and public rights-of-way free from mud and other tracked debris
from the site.
· Management of Contaminated Soils: We are not aware of contaminated soils that
exist within the limits of the proposed earth disturbing activity. Our knowledge of the
pre-development activities within the site does not suggest that contimainated soils will
be discovered during the construction process.
· Loading and Unloading Operations: All loading and unloading operations of
equipment shall be carried out in areas protected by erosion and sediment controls. It is
recommended that all equipment be cleaned on-site and within protected areas prior to
exiting the site.
· Vehicle and Equipment Maintenance and Fueling: Reference Good Housekeeping
Practices (GH) in Appendix E for additional information about good housekeeping
practices designed to prevent pollution associated with solid, liquid and hazardous
construction-related materials and wastes.
If equipment is to be maintained and stored in an open area this area should not be
within the drip line of trees and not be within 100 feet of a watercourse or wetland.
Runoff should be diverted away from watercourses and wetlands. Maintenance should
be done on impervious areas surrounded with impervious berms. Where this is not
possible, use pads designed to contain the pollutants which may leak or spill during
maintenance operations. Impervious pads are particularly important on sandy and other
coarse soils where spilled materials can easily infiltrate and possibly leach into the
groundwater. Equipment shall be checked before and after each use and, at a
minimum, during the weekly stormwater inspection if otherwise idle. Periodic checks of
the equipment wash areas shall be performed to ensure proper operation.
Temporary on-site fuel tanks for construction vehicles shall meet all state and federal
regulations. Tanks shall have approved spill containment with the capacity required by
the applicable regulations. From NFPA 30: All tanks shall be provided with secondary
containment (i.e., containment external to and separate from primary containment).
Secondary containment shall be constructed of materials of sufficient thickness, density
and composition so as not to be structurally weakened as a result of contact with the
fuel stored and capable of containing discharged fuel for a period of time equal to or
longer than the maximum anticipated time sufficient to allow recovery of discharged
fuel. It shall be capable of containing 110% of the volume of the primary tank if a single
tank is used, or in the case of multiple tanks, 150% of the largest tank or 10% of the
aggregate, whichever is larger.
The tanks shall be in sound condition free of rust or other damage which might
compromise containment. Fuel storage areas will meet all EPA, OSHA and other
regulatory requirements for signage, fire extinguisher, etc. Hoses, valves, fittings, caps,
filler nozzles and associated hardware shall be maintained in proper working condition
at all times. The location of fuel tanks shall be shown on the Site Maps and shall be
located to minimize exposure to weather and surface water drainage features.
A Spill Prevention, Control and Countermeasure (SPCC) Plan must be developed if
aboveground oil storage capacity at the construction site exceeds 1,320-gallons or as
specified by state. Containers with a storage capacity of 55-gallons or less are not
included when calculating site storage capacity. The General Contractor shall develop
and implement a SPCC Plan in accordance with the Oil Pollution Prevention regulation
at Title 40 of the Code of Federal Regulations, Part 112, (40 CFR 112).
· Concrete Truck/Equipment Washing: A Concrete Washout Area (CWA) shall be
installed prior to any concrete placement on-site. Signs shall be placed at the
construction entrance(s), at the washout area and elsewhere as necessary to clearly
indicate the location of the concrete washout area. The washout area shall be repaired
and enlarged or cleaned out as necessary to maintain capacity for wasted concrete.
Concrete and concrete wash water shall be removed from the site and disposed of at
an accepted waste facility.
· Non-Industrial Waste Sources:
Portable toilets: All personnel involved with construction activities must comply with
state and local sanitary or septic system regulations. Temporary sanitary facilities will
be provided at the site throughout the construction phase. They must be utilized by all
construction personnel and must be serviced weekly by a commercial operator. The
location of sanitary facilities shall be shown on the Site Maps. Portable toilets must be
securely anchored a minimum of 10’ behind curbs, and are not allowed within 50’ of
inlets or within 50’ of a water of the State or the municipal storm drain system.
Worker’s trash: The site shall be policed at the end of each work day to be kept free of
trash and debris resulting from workers day-to-day activities. If necessary, place clearly
marked and protected containers for trash and debris at convenient locations
throughout the site. The burying of waste on-site is prohibited. Trash must be properly
contained at the end of each day.
· Dedicated Asphalt and Concrete Batch Plants: Neither a dedicated asphalt or
concrete batch plant is anticipated with the proposed construction activity.
C. BMPs FOR STORMWATER POLLUTION PREVENTION
The initial erosion and sediment control measures will consist of installing Silt Fence (SF) along
the perimeter of the site and around the perimeter of anticipated stock pile areas. Vehicle
Tracking Control (VTC) should be installed as shown on EC01 and EC02. Prior to construction
of any concrete fixtures a Concrete Washout Area (CWA) shall be installed on site as shown
on the EC01 and EC02. After each proposed curb or area inlet is constructed, proper inlet
protection will be installed to minimize sediment and debris discharge. These BMPs will remain
in place and be properly maintained until landscaping is installed and/or final stabilization
within the respective tributary area of the site occurs. All portions of land which may be
disturbed will be temporarily or permanently seeded, landscaped or paved as noted on the
design drawings (refer to Appendix H). The specifics for each measure to be utilized and/or
installed are indicated below:
STRUCTURAL PRACTICES
* Refer to Appendix D for details
· Temporary and Permanent Seeding (TS/PS): All denuded areas that will be inactive
for 14 days or more must be stabilized temporarily with the use of fast-germinating
annual grass/grain varieties appropriate for site soil and climate conditions, straw/hay
mulch, wood cellulose fibers, tackifiers, netting and/or blankets. Stockpiles and
diversion ditches/berms must be stabilized to prevent sediment and erosion and dust
issues, respectively.
· Permanent Seeding, Sodding or Mulching (TS/PS): All areas at final grade must be
seeded or sodded within 14 days after completion of work in that area. Prepare soil and
seed immediately after final grade is achieved. On completion of earth disturbing
activities the entire site must have permanent vegetative cover meeting vegetative
density requirements or mulch per landscape plan in all areas not covered by
hardscape (e.g., pavement, buildings, etc.). Except for small (<100 sq.ft.) level spots,
seeded areas should be protected with mulch, tackifier or a rolled erosion control
product. Mulch must be crimped by disc or other machinery.
· Silt Fence (SF): Silt fence is a synthetic permeable woven or non-woven geotextile
fabric incorporating support stakes at intervals sufficient to support the fence (5-feet
maximum distance between posts), water and sediment retained by the fence. The
fence is designed to retain sediment-laden storm water and allow settlement of
suspended soils before the storm water flows through the fabric. Silt fence shall be
located on the contour to capture overland, low-velocity sheet flows.
· Vehicle Tracking Control (VTC): All points closed to the general public and providing
access into the construction site shall include a marked construction exit that will be
monitored for any signs of tracking from the construction site. It is expected that only
trailer delivered equipment will access the exposed subgrades and that vehicle tracking
adjacent to publically accessible parking and public rights-of-way should not be evident.
It may also be necessary to install a wheel wash system. If this is done, a Sediment
Trap (ST) control must be installed to treat the wash water before it discharges from the
site. Discharge must be directed to the detention pond within the limits of construction
as indicated.
· Inlet Protection (IP): Inlet protection should be installed at storm sewer inlets that are
operable during construction. It consists of permeable barriers installed around an inlet
to filter runoff and remove sediment prior to entering the storm drain inlet. The primary
mechanism is to place controls in the path of flow sufficient to slow the sediment-laden
water to allow settlement of suspended soils before discharging into the storm sewer. It
is possible that as construction progresses from storm sewer installation through to
paving that the inlet protection devices should change. All inlet protection devices
create ponding of storm water. This should be taken into consideration when deciding
on which device or devices should be used.
· Straw Wattles (SW) or Sediment Control Logs (SCL): Straw wattles or sediment
control logs consist of straw, compost, excelsior or coconut fiber that are staked to the
ground and designed to prevent sediment transfer. The wattles are designed to retain
sediment-laden storm water and allow settlement of suspended soils before the storm
water flows through the wattle. Straw wattles shall be located on the contour to capture
overland, low-velocity sheet flows.
· Soil Stockpile Management (SP): Soil stockpiles should be located away from all
drainage system components including storm sewer inlets. Sediment control BMPs
should be placed around the perimeter of all stockpiles. Soils stockpiled for more than
30 days should be seeded and mulched with a temporary grass cover.
· Good Housekeeping Practices (GH): Good housekeeping practices include providing
waste management, establishing proper building material staging areas, designating
paint and concrete washout areas, establishing proper equipment and vehicle fueling
and maintenance practices, controlling equipment and vehicle washing and allowable
non-storm water discharges and developing a spill prevention and response plan.
· Stabilized Staging Area: This is a clearly designated area where construction
equipment and vehicles, stockpiles, waste bins and other construction-related materials
are stored. The stabilized storage area consists of a stabilized surface, covered with 3-
inch diameter aggregate or larger.
· Surface Roughening (SR): Surface roughening consists of tracking, scarifying,
imprinting or tilling a disturbed area to provide temporary stabilization of disturbed
areas. It is used to provide temporary stabilization of disturbed areas, such as when re-
vegetation cannot be immediately established.
D. PHASE CONSTRUCTION ACTIVITY AND BMP IMPLEMENTATION
Should there be changes to the implemented BMPs, the Administrator shall be notified and the
SWMP must be modified to accurately reflect the field conditions. Examples include, but are
not limited to, removal of BMPs, identification of new potential pollutant sources, addition of
BMPs, modification of BMP installation and implementation criteria or maintenance procedures
and changes in items included in the Site Map and/or description. SWMP revisions must be
made prior to changes in site conditions, except for Responsive SWMP Changes, as follows:
· SWMP revisions must be made immediately after changes are made in the field to
address BMP installation and/or implementation issues; or
· SWMP revisions that require the development of supporting documentation (e.g.,
design of retention pond capacity) must be made as soon as practicable, but in no case
more than 72 hours, after change(s) in BMP installation and/or implementation occur at
the site.
This SWMP should be viewed as a “living document” that is to be continuously reviewed and
modified as part of the overall process of assessing and managing storm water quality issues
on-site.
E. HAZARDOUS MATERIAL HANDLING AND SPILL PREVENTION
Any hazardous or potentially hazardous material that is brought onto the construction site will
be handled properly in order to reduce the potential for storm water pollution. All materials
used on this construction site will be properly stored including the use of secondary
containment measures, handled, dispensed and disposed of following all applicable label
directions. Flammable and combustible liquids will be stored and handled according to 29
CFR 1926.152. Only approved containers and portable tanks shall be used for storage and
handling of flammable and combustible liquids.
Material Safety Data Sheets (MSDS) information will be kept on-site for any and all applicable
materials.
In the event of an accidental spill, immediate action will be undertaken by the General
Contractor to contain and remove the spilled material. All hazardous materials will be disposed
of by the Contractor in the manner specified by federal, state and local regulations and by the
manufacturer of such products. As soon as possible, the spill will be reported to the
appropriate agencies. As required under the provisions of the Clean Water Act, any spill or
discharge entering waters of the United States will be properly reported. The General
Contractor will prepare a written record of all spills and associated clean-up and will provide
also notify the City of Fort Collins (970-XXX-XXX) and Larimer County (970-XXX-XXX). The
General Contractor will provide notice to Owner immediately upon identification of a reportable
spill.
Any spills of petroleum products or hazardous materials in excess of Reportable Quantities as
defined by EPA or the state or local agency regulations, shall be immediately reported to the
EPA National Response Center (1-800-424-8802), the Colorado Department of Public Health
and Environment (CDPHE) (1-877-518-5608) and the City of Fort Collins (970-XXX-XXXX)
The State reportable quantity for petroleum products is 25 gallons or more (or that cause
sheen on nearby surface waters). Spills from regulated aboveground and underground fuel
storage tanks must be reported to the State Oil Inspector within 24 hours (after-hours contact
CDPHE Emergency Spill Reporting Line). This includes spills from fuel pumps. Spills or
releases of hazardous substances from regulated storage tanks in excess of the reportable
quantity (40 CFR Part 302.6) must be reported to the National Response Center, the local fire
authority immediately, the State Oil Inspector and the City of Fort Collins within 24 hours.
In order to minimize the potential for a spill of petroleum products or hazardous materials to
come in contact with storm water, the following steps will be implemented:
a) All materials with hazardous properties (such as pesticides, petroleum products,
fertilizers, detergents, construction chemicals, acids, paints, paint solvents,
additives for soil stabilization, concrete, curing compounds and additives, etc.) will
be stored, including secondary containment measures in a secure location and
under cover, when not in use.
b) The minimum practical quantity of all such materials will be kept on the job site
and scheduled for delivery as close to the time of use as practical.
c) A spill control and containment kit (containing for example, absorbent material
such as kitty litter or sawdust, acid neutralizing agent, brooms, dust pans, mops,
rags, gloves, goggles, plastic and metal trash containers, etc.) will be provided on
the construction site and location(s) shown on Site Maps. The kit should be
inspected for completeness as a part of weekly storm water inspections.
d) All of the product in a container will be used before the container is disposed of.
All such containers will be triple rinsed, with water, prior to disposal. The rinse water
used in these containers will be disposed of in a manner in compliance with State
and federal regulations and will not be allowed to mix with stormwater discharges.
e) All products will be stored in and used from the original container with the
original product label.
f) All products will be used in strict compliance with instructions on the product
label.
g) The disposal of excess or used products will be in strict compliance with
instructions on the products label and local regulations.
The contractor is responsible for the Spill Prevention and Control Plan (SPCP). If the
contractor elects to provide his own SPCP, it must be included in the Appendix as a
replacement. A contractor provided SPCP shall clearly state measures to stop the source of a
spill, contain the spill, clean up the spill, dispose of contaminated materials and train personnel
to prevent and control future spills. In addition the SPCP must include contact and
documentation requirements for each of the Minor, Significant and Hazardous spill
magnitudes. Further requirements are listed below in the equipment fueling section.
SECTION 4: FINAL STABILIZATION & LONG-TERM STORMWATER
MANAGEMENT
a) In accordance with Part 1.C.4.c of the CDPS General Permit for Stormwater
Discharges Associated with Construction Activity (COR-300000) (the stormwater
permit):
“Final stabilization is reached when all ground surface disturbing activities at the
site have been completed and uniform vegetative cover has been established
with an individual plant density of at least 70 percent of pre-disturbance levels,
or equivalent permanent, physical erosion reduction methods have been
employed.”
The following criteria must be met when planning for final stabilization:
· Stabilization must be permanent
· ALL disturbed areas must be stabilized
· Alternatives must follow good practice
The stormwater permit allows the use of alternatives to vegetation to achieve final
stabilization. These alternatives must meet specific criteria to be considered equivalent
to vegetation. Examples of alternative stabilization practices include:
· Permanent Paving and Buildings
· Hardscape
· Geogrid
· Xeriscape
· Compacted and Stabilized Unpaved Driving Surfaces
In general, the project will be developed in phases. The area to be developed in Phase
1 is shaded on EC01 and EC02. The areas of the site that are associated with future
phases of development and remain exposed by land disturbing activity for more than
thirty-(30) days, will require temporary or permanent erosion control (e.g. seed/mulch,
landscaping, etc.) to be installed, unless otherwise approved by the Stormwater
Department.
As the lots and blocks achieve final stabilization (see above), the BMPs associated with
them can be removed.
b) Seed Mix Information
Species Preferred
Varieties
Seeded Rate
(lbs. per
acre, drilled)
PLS
Seeded/acre
Leymus Cinereus Great Basin Wilrye Mangar 3 285,000
Nassella Viridula Green Needlegrass Lodorm 2 362,000
Achnatherum
Hymenoides Indian Ricegrass Paloma, Nezpar 1 188,000
Elymus Trachycaulus Slender Wheatgrass
Primar,
Revenue 2 320,000
Elymus Lanceolatus Thickspike Wheatgrass Critana 3 580,500
Pascopyrim Smithii Western Wheatgrass Arriba, Barton 4 504,000
Totals 15 2,239,500
c) Final Stabilization Notes – Landscape Schedule and Notes (LP100) and the Overall
Landscape Plan (LP103)
SECTION 5: INSPECTION & MAINTENANCE
The contractor must keep the approved SWMP on-site at all times. An individual certified to
inspect erosion and sediment control by a recognized organization must conduct all BMP
inspections. Proof of certification shall be included in the SWMP. All regulatory authorities may
inspect the land or site covered by the SWMP at any time, without prior notice, for compliance
with the SWMP. If site conditions indicate that the objectives of this section are not being met,
the operator shall make appropriate modifications to the SWMP. Any modification must be
recorded on the owner’s copy of the SWMP and the Administrator notified. The contractor
must maintain inspection records on-site with the SWMP and such records must be provided to
the regulatory agencies for review upon request. The contractor must notify the Administrator if
there is a change in design, construction, operation or maintenance that has a significant
effect on the potential for discharge of pollutants to the MS4 or receiving waters and the
SWMP must be amended. The contractor must notify the Administrator and the SWMP
amended, if the SWMP proves to be ineffective in achieving the general objectives of
controlling pollutants in stormwater discharges associated with construction activities.
INSPECTION PROCEDURES
Between the time this SWMP is implemented and final Inactivation Notice has been submitted,
thorough inspections will occur at least every 14 calendar days. Also, post-storm event
inspections must be conducted within 24 hours after the end of precipitation event or snowmelt
that could potentially cause surface erosion. The purpose of site inspections is to assess
performance of pollutant controls. Based on these inspections the contractor, in consultation
with the Administrator (if different) will decide whether it is necessary to modify this SWMP,
add or relocate controls, or revise or implement additional Best Management Practices (BMPs)
in order to prevent pollutants from leaving the site via storm water runoff. The contractor has
the duty to cause pollutant control measures to be repaired, modified, supplemented or take
additional steps as necessary in order to achieve effective pollutant control.
Note: If a BMP is covered by snow, mark the BMP as not applicable and document the reason
the BMP can not be inspected on the daily report.
Examples of specific items to evaluate during site inspections are listed below. This list is not
intended to be comprehensive. During each inspection, the inspector must evaluate overall
pollutant control system performance as well as particular details of individual system
components. Additional factors should be considered as appropriate to the circumstances.
· Vehicle Tracking Control (VTC): Locations where vehicles enter and exit the site must
be inspected for evidence of off-site sediment tracking. A stabilized construction exit
shall be constructed where vehicles enter and exit. Exits shall be maintained or
supplemented as necessary to prevent the release of sediment from vehicles leaving
the site. Any sediment deposited on the roadway shall be swept as necessary
throughout the day or at the end of every day and disposed of in an appropriate
manner. Sediment shall NOT be washed into storm sewer systems.
· Erosion Control Devices: Rolled Erosion Control Products (i.e., nets, blankets, turf
reinforcement mats) and marginally vegetated areas (i.e., areas not meeting required
vegetative densities for final stabilization) must be inspected weekly. Rills, gullies, ruts
and other signs of erosion indicate the erosion control device is not functioning
properly. Repair and/or additional erosion control devices may be warranted.
· Material Storage Areas: Material storage areas should be located to minimize
exposure to weather and runoff. Inspections shall evaluate disturbed areas and areas
used for storing materials that are exposed to rainfall for evidence of, or the potential
for, pollutants entering the drainage system or discharging from the site. If necessary,
the materials must be covered or original covers must be repaired or supplemented.
Also, protective berms must be constructed, if needed, in order to contain runoff from
material storage areas. All state and local regulations pertaining to material storage
areas will be adhered to.
· Discharge Points: All discharge points must be inspected to determine whether
erosion and sediment control measures are effective in preventing discharge of
sediment from the site or impacts to receiving waters.
BMP MAINTENANCE
The Stormwater Construction Permit requires that all erosion and sediment control practices
and other protective measures identified in the SWMP be maintained in effective operating
condition, and in accordance with good engineering, hydrologic and pollution control practices.
Sediment that has been collected by sediment controls, such as silt fence and inlet protection,
shall be removed when observed, to prevent failure of BMPs, ensure adequate BMP
performance and remove the potential of that sediment from being discharged from the site if
the BMP did fail. Removed sediment shall be properly disposed of on-site. Maintenance
activities to correct problems noted during inspections must be documented as discussed in
the documentation section, below. The inspection process must also include procedures to
ensure that, when needed, BMPs are replaced or new BMPs added to adequately manage the
pollutant sources at the site. This procedure is part of the ongoing process of revising the
BMPs and the SWMP as discussed above, and any changes to BMPs must be recorded in the
SWMP. The SWMP must be modified as soon as practicable to reflect current conditions.
BMPs that have failed, or have the potential to fail without maintenance or modifications, must
be addressed as soon as possible, immediately in most cases, to prevent the discharge of
pollutants.
DOCUMENTATION
All erosion control measures and stabilizations shall be inspected at least once every 14
calendar days. Also, post-storm event inspections must be conducted within 24 hours after the
end of precipitation event or snowmelt that could potentially cause surface erosion. The
permittee must document inspection results and maintain a record of the results for a period of
three-(3) years following closing of permit coverage. Sample inspection logs are included in
Appendix G. These records must be made available to the Owner, the City & County, the State
or the EPA upon request. The following items must be documented as part of the site
inspections:
· The inspection date
· Name(s) and title(s) of personnel making the inspection
· Location(s) of discharges of sediment or other pollutants from the site
· Location(s) of BMPs that need to be maintained
· Location(s) of BMPs that failed to operate as designed or proved inadequate for a
particular location
· Location(s) where additional BMPs are needed that were not in place at the time of
inspection
· Deviations from the minimum inspection schedule as indicated above
· Description and dates of corrective actions taken including requisite changes to the
SWMP.
A complete copy of the SWMP shall be kept with the inspection and maintenance records for
the aforementioned three-(3) year period.
(Contractor to provide physical address)
REFERENCES
1. Fort Collins Stormwater Criteria Manual (Addendum to the Urban Storm Drainage
Criteria Manuals Volumes 1, 2 and 3), prepared by the City of Fort Collins.
2. Urban Drainage and Flood Control District, Drainage Criteria Manual Volumes 1 and
2, prepared by Wright-McLaughlin Engineers, dated June 2001 (revised April 2008),
and the Volume 3, prepared by Wright-McLaughlin Engineers, dated September
1992 and revised November 2010.
3. General Permit Application and Stormwater Management Plan Preparation
Guidance, Colorado Department of Public Health and Environment (CDPHE),
Revised May 2008.
APPENDIX A – Floodplain Information
*The project site is not impacted by a FEMA or CoFC designated floodplain
APPENDIX B – Soils Information
Hydrologic Soil Group—Larimer County Area, Colorado
(East Ridge Subdivision)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
7/24/2015
Page 1 of 4
4492900 4493000 4493100 4493200 4493300 4493400 4493500 4493600 4493700 4493800 4493900 4494000 4494100
4492900 4493000 4493100 4493200 4493300 4493400 4493500 4493600 4493700 4493800 4493900 4494000 4494100
497500 497600 497700 497800 497900 498000 498100 498200 498300
497500 497600 497700 497800 497900 498000 498100 498200 498300
40° 35' 52'' N
105° 1' 49'' W
40° 35' 52'' N
105° 1' 8'' W
40° 35' 10'' N
105° 1' 49'' W
40° 35' 10'' N
105° 1' 8'' W
N
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
0 300 600 1200 1800
Feet
0 50 100 200 300
Meters
Map Scale: 1:6,220 if printed on A portrait (8.5" x 11") sheet.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Rating Polygons
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Soil Rating Lines
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Soil Rating Points
A
A/D
B
B/D
C
C/D
D
Not rated or not available
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at 1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil line
placement. The maps do not show the small areas of contrasting
soils that could have been shown at a more detailed scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more accurate
calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as of
the version date(s) listed below.
Soil Survey Area: Larimer County Area, Colorado
Hydrologic Soil Group
Hydrologic Soil Group— Summary by Map Unit — Larimer County Area, Colorado (CO644)
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
5 Aquepts, loamy A/D 11.7 6.4%
7 Ascalon sandy loam, 0 to
3 percent slopes
B 5.8 3.2%
34 Fort Collins loam, 0 to 1
percent slopes
B 6.0 3.3%
35 Fort Collins loam, 0 to 3
percent slopes
C 109.7 60.3%
42 Gravel pits A 10.8 5.9%
53 Kim loam, 1 to 3 percent
slopes
B 17.2 9.5%
73 Nunn clay loam, 0 to 1
percent slopes
C 6.8 3.7%
74 Nunn clay loam, 1 to 3
percent slopes
C 6.4 3.5%
94 Satanta loam, 0 to 1
percent slopes
B 0.1 0.0%
102 Stoneham loam, 3 to 5
percent slopes
B 7.3 4.0%
Totals for Area of Interest 181.8 100.0%
Hydrologic Soil Group—Larimer County Area, Colorado East Ridge Subdivision
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
7/24/2015
Page 3 of 4
Description
Hydrologic soil groups are based on estimates of runoff potential. Soils are
assigned to one of four groups according to the rate of water infiltration when the
soils are not protected by vegetation, are thoroughly wet, and receive precipitation
from long-duration storms.
The soils in the United States are assigned to four groups (A, B, C, and D) and
three dual classes (A/D, B/D, and C/D). The groups are defined as follows:
Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly
wet. These consist mainly of deep, well drained to excessively drained sands or
gravelly sands. These soils have a high rate of water transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These
consist chiefly of moderately deep or deep, moderately well drained or well drained
soils that have moderately fine texture to moderately coarse texture. These soils
have a moderate rate of water transmission.
Group C. Soils having a slow infiltration rate when thoroughly wet. These consist
chiefly of soils having a layer that impedes the downward movement of water or
soils of moderately fine texture or fine texture. These soils have a slow rate of water
transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential) when
thoroughly wet. These consist chiefly of clays that have a high shrink-swell
potential, soils that have a high water table, soils that have a claypan or clay layer
at or near the surface, and soils that are shallow over nearly impervious material.
These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is
for drained areas and the second is for undrained areas. Only the soils that in their
natural condition are in group D are assigned to dual classes.
Rating Options
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Hydrologic Soil Group—Larimer County Area, Colorado East Ridge Subdivision
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
7/24/2015
Page 4 of 4
APPENDIX C – Erosion and Sediment Control Escrow/Security
Calculation
Project: Disturbed Acres: 153.29
EROSION CONTROL BMPs Units
Estimated
Quantity
Unit
Price
Total
Price
L.F. 9900 $1.85 $18,315.00
Straw Wattles (9" x 10') each 6 $20.00 $120.00
Straw Wattles (9" x 25') each 733 $35.00 $25,655.00
each 58 $75.00 $4,350.00
Rock Sock each 0 $25.00 $0.00
each 1 $200.00 $200.00
each 2 $700.00 $1,400.00
Sub-Total: $50,040.00
1.5 x Sub-Total: $75,060.00
Amount of security: $75,060.00
Total Acres x Price/acre: $76,645.00
$500.00 Sub-Total: $76,645.00
1.5 x Sub-Total: $114,967.50
Amount to Re-seed: $114,967.50
Minimum escrow amount: $3,000.00
Erosion Control Escrow: $114,967.50
User Input Fields in BLUE should be amended for this project.
Erosion and Sediment Control Escrow/Security Calculation
BMP Amount
Silt Fence
Vehicle Tracking Control (VTC)
Re-seeding Amount
Miniumum Escrow Amount
East Ridge Second Filing
Unit Price of Seeding per acre:
“The amount of the security must be based on one and one-half times the estimate of the cost to install the approved measures, or one
and one-half times the cost to re-vegetate the disturbed land to dry land grasses based upon unit cost determined by the City's Annual
Revegetation and Stabilization Bid, whichever is greater. In no instance, will the amount of security be less than one thousand five
hundred dollars ($1,500) for residential development or three thousand dollars ($3,000) for commercial development”
Curb Inlet Protection
Concrete Washout
(add all other BMPs for the site in this list)
Final Escrow Amount
APPENDIX D – Construction Sequence Matrix
Project: East Ridge Second Filing Date: 1/29/2016
Municipality: City of Fort Collins
Best Management Practices (BMPs) Mobilization Demolition Grading
Utilities
Installation
Flat work
Installation
Vertical
Installation
Landscape Demobilization
Structural BMPs
Contour Furrows (Ripping/Disking)
Sediment Trap/ Filter
Vehicle Tracking Pad*
Flow Barriers (Wattles)*
Inlet Filter Bags*
Rock Bags*
Terracing
Stream Flow Diversion*
Riprap
Collecting Asphalt/Concrete Saw Cutting Waste
Vegetative BMPs
Temporary Seeding or Planting Any time the site will sit dormant longer than 30 Days.
Mulching/Sealant Any time the site will sit dormant longer than 30 Days.
Permanent Seeding or Planting
Sod Installation
Rolled Erosion Control Products (i.e., Netting/Blankets/Mats) Any time the site will sit dormant longer than 30 Days.
Other:
Construction Sequence Matrix
*All BMPs to be Removed when Final Stablization is achieved
Silt Fence Barriers*
APPENDIX E – Best Management Practice (BMP) Details
Construction Phasing/Sequencing (CP) SM-1
November 2010 Urban Drainage and Flood Control District CP-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph CP-1. Construction phasing to avoid disturbing the
entire area at one time. Photo courtesy of WWE.
Description
Effective construction site management
to minimize erosion and sediment
transport includes attention to
construction phasing, scheduling, and
sequencing of land disturbing activities.
On most construction projects, erosion
and sediment controls will need to be
adjusted as the project progresses and
should be documented in the SWMP.
Construction phasing refers to
disturbing only part of a site at a time to
limit the potential for erosion from
dormant parts of a site. Grading
activities and construction are completed
and soils are effectively stabilized on one
part of a site before grading and
construction begins on another portion of the site.
Construction sequencing or scheduling refers to a specified work schedule that coordinates the timing of
land disturbing activities and the installation of erosion and sediment control practices.
Appropriate Uses
All construction projects can benefit from upfront planning to phase and sequence construction activities
to minimize the extent and duration of disturbance. Larger projects and linear construction projects may
benefit most from construction sequencing or phasing, but even small projects can benefit from
construction sequencing that minimizes the duration of disturbance.
Typically, erosion and sediment controls needed at a site will change as a site progresses through the
major phases of construction. Erosion and sediment control practices corresponding to each phase of
construction must be documented in the SWMP.
Design and Installation
BMPs appropriate to the major phases of development should be identified on construction drawings. In
some cases, it will be necessary to provide several drawings showing construction-phase BMPs placed
according to stages of development (e.g., clearing and grading, utility installation, active construction,
final stabilization). Some municipalities in the Denver area set maximum sizes for disturbed area
associated with phases of a construction project. Additionally, requirements for phased construction
drawings vary among local governments within the UDFCD boundary. Some local governments require
separate erosion and sediment control drawings for initial
BMPs, interim conditions (in active construction), and final
stabilization.
Construction Scheduling
Functions
Erosion Control Moderate
Sediment Control Moderate
Site/Material Management Yes
SM-1 Construction Phasing/Sequencing (CP)
CP-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Typical construction phasing BMPs include:
Limit the amount of disturbed area at any given time on a site to the extent practical. For example, a
100-acre subdivision might be constructed in five phases of 20 acres each.
If there is carryover of stockpiled material from one phase to the next, position carryover material in a
location easily accessible for the pending phase that will not require disturbance of stabilized areas to
access the stockpile. Particularly with regard to efforts to balance cut and fill at a site, careful
planning for location of stockpiles is important.
Typical construction sequencing BMPs include:
Sequence construction activities to minimize duration of soil disturbance and exposure. For example,
when multiple utilities will occupy the same trench, schedule installation so that the trench does not
have to be closed and opened multiple times.
Schedule site stabilization activities (e.g., landscaping, seeding and mulching, installation of erosion
control blankets) as soon as feasible following grading.
Install initial erosion and sediment control practices before construction begins. Promptly install
additional BMPs for inlet protection, stabilization, etc., as construction activities are completed.
Table CP-1 provides typical sequencing of construction activities and associated BMPs.
Maintenance and Removal
When the construction schedule is altered, erosion and sediment control measures in the SWMP and
construction drawings should be appropriately adjusted to reflect actual "on the ground" conditions at the
construction site. Be aware that changes in construction schedules can have significant implications for
site stabilization, particularly with regard to establishment of vegetative cover.
Construction Phasing/Sequencing (CP) SM-1
November 2010 Urban Drainage and Flood Control District CP-3
Urban Storm Drainage Criteria Manual Volume 3
Table CP-1. Typical Phased BMP Installation for Construction Projects
Project
Phase BMPs
Pre-
disturbance,
Site Access
Install sediment controls downgradient of access point (on paved streets this may consist
of inlet protection).
Establish vehicle tracking control at entrances to paved streets. Fence as needed.
Use construction fencing to define the boundaries of the project and limit access to areas of
the site that are not to be disturbed.
Note: it may be necessary to protect inlets in the general vicinity of the site, even if not
downgradient, if there is a possibility that sediment tracked from the site could contribute
to the inlets.
Site Clearing
and Grubbing
Install perimeter controls as needed on downgradient perimeter of site (silt fence, wattles,
etc).
Limit disturbance to those areas planned for disturbance and protect undisturbed areas
within the site (construction fence, flagging, etc).
Preserve vegetative buffer at site perimeter.
Create stabilized staging area.
Locate portable toilets on flat surfaces away from drainage paths. Stake in areas
susceptible to high winds.
Construct concrete washout area and provide signage.
Establish waste disposal areas.
Install sediment basins.
Create dirt perimeter berms and/or brush barriers during grubbing and clearing.
Separate and stockpile topsoil, leave roughened and/or cover.
Protect stockpiles with perimeter control BMPs. Stockpiles should be located away from
drainage paths and should be accessed from the upgradient side so that perimeter controls
can remain in place on the downgradient side. Use erosion control blankets, temporary
seeding, and/or mulch for stockpiles that will be inactive for an extended period.
Leave disturbed area of site in a roughened condition to limit erosion. Consider temporary
revegetation for areas of the site that have been disturbed but that will be inactive for an
extended period.
Water to minimize dust but not to the point that watering creates runoff.
SM-1 Construction Phasing/Sequencing (CP)
CP-4 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Project
Phase BMPs
Utility And
Infrastructure
Installation
In Addition to the Above BMPs:
Close trench as soon as possible (generally at the end of the day).
Use rough-cut street control or apply road base for streets that will not be promptly paved.
Provide inlet protection as streets are paved and inlets are constructed.
Protect and repair BMPs, as necessary.
Perform street sweeping as needed.
Building
Construction
In Addition to the Above BMPs:
Implement materials management and good housekeeping practices for home building
activities.
Use perimeter controls for temporary stockpiles from foundation excavations.
For lots adjacent to streets, lot-line perimeter controls may be necessary at the back of
curb.
Final Grading
In Addition to the Above BMPs:
Remove excess or waste materials.
Remove stored materials.
Final
Stabilization
In Addition to the Above BMPs:
Seed and mulch/tackify.
Seed and install blankets on steep slopes.
Remove all temporary BMPs when site has reached final stabilization.
Silt Fence (SF) SC-1
November 2010 Urban Drainage and Flood Control District SF-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph SF-1. Silt fence creates a sediment barrier, forcing
sheet flow runoff to evaporate or infiltrate.
Description
A silt fence is a woven geotextile fabric
attached to wooden posts and trenched
into the ground. It is designed as a
sediment barrier to intercept sheet flow
runoff from disturbed areas.
Appropriate Uses
A silt fence can be used where runoff is
conveyed from a disturbed area as sheet
flow. Silt fence is not designed to
receive concentrated flow or to be used
as a filter fabric. Typical uses include:
Down slope of a disturbed area to
accept sheet flow.
Along the perimeter of a receiving
water such as a stream, pond or
wetland.
At the perimeter of a construction site.
Design and Installation
Silt fence should be installed along the contour of slopes so that it intercepts sheet flow. The maximum
recommended tributary drainage area per 100 lineal feet of silt fence, installed along the contour, is
approximately 0.25 acres with a disturbed slope length of up to 150 feet and a tributary slope gradient no
steeper than 3:1. Longer and steeper slopes require additional measures. This recommendation only
applies to silt fence installed along the contour. Silt fence installed for other uses, such as perimeter
control, should be installed in a way that will not produce concentrated flows. For example, a "J-hook"
installation may be appropriate to force runoff to pond and evaporate or infiltrate in multiple areas rather
than concentrate and cause erosive conditions parallel to the silt fence.
See Detail SF-1 for proper silt fence installation, which involves proper trenching, staking, securing the
fabric to the stakes, and backfilling the silt fence. Properly installed silt fence should not be easily pulled
out by hand and there should be no gaps between the ground and the fabric.
Silt fence must meet the minimum allowable strength requirements, depth of installation requirement, and
other specifications in the design details. Improper installation
of silt fence is a common reason for silt fence failure; however,
when properly installed and used for the appropriate purposes, it
can be highly effective.
Silt Fence
Functions
Erosion Control No
Sediment Control Yes
Site/Material Management No
SC-1 Silt Fence (SF)
SF-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Photograph SF-2. When silt fence is not installed along
the contour, a "J-hook" installation may be appropriate
to ensure that the BMP does not create concentrated
flow parallel to the silt fence. Photo courtesy of Tom
Gore.
Maintenance and Removal
Inspection of silt fence includes observing the
material for tears or holes and checking for slumping
fence and undercut areas bypassing flows. Repair of
silt fence typically involves replacing the damaged
section with a new section. Sediment accumulated
behind silt fence should be removed, as needed to
maintain BMP effectiveness, typically before it
reaches a depth of 6 inches.
Silt fence may be removed when the upstream area
has reached final stabilization.
Silt Fence (SF) SC-1
November 2010 Urban Drainage and Flood Control District SF-3
Urban Storm Drainage Criteria Manual Volume 3
SC-1 Silt Fence (SF)
SF-4 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Vehicle Tracking Control (VTC) SM-4
November 2010 Urban Drainage and Flood Control District VTC-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph VTC-1. A vehicle tracking control pad constructed with
properly sized rock reduces off-site sediment tracking.
Description
Vehicle tracking controls provide
stabilized construction site access where
vehicles exit the site onto paved public
roads. An effective vehicle tracking
control helps remove sediment (mud or
dirt) from vehicles, reducing tracking onto
the paved surface.
Appropriate Uses
Implement a stabilized construction
entrance or vehicle tracking control where
frequent heavy vehicle traffic exits the
construction site onto a paved roadway. An
effective vehicle tracking control is
particularly important during the following conditions:
Wet weather periods when mud is easily tracked off site.
During dry weather periods where dust is a concern.
When poorly drained, clayey soils are present on site.
Although wheel washes are not required in designs of vehicle tracking controls, they may be needed at
particularly muddy sites.
Design and Installation
Construct the vehicle tracking control on a level surface. Where feasible, grade the tracking control
towards the construction site to reduce off-site runoff. Place signage, as needed, to direct construction
vehicles to the designated exit through the vehicle tracking control. There are several different types of
stabilized construction entrances including:
VTC-1. Aggregate Vehicle Tracking Control. This is a coarse-aggregate surfaced pad underlain by a
geotextile. This is the most common vehicle tracking control, and when properly maintained can be
effective at removing sediment from vehicle tires.
VTC-2. Vehicle Tracking Control with Construction Mat or Turf Reinforcement Mat. This type of
control may be appropriate for site access at very small construction sites with low traffic volume over
vegetated areas. Although this application does not typically remove sediment from vehicles, it helps
protect existing vegetation and provides a stabilized entrance.
Vehicle Tracking Control
Functions
Erosion Control Moderate
Sediment Control Yes
Site/Material Management Yes
SM-4 Vehicle Tracking Control (VTC)
VTC-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Photograph VTC-2. A vehicle tracking control pad with wheel wash
facility. Photo courtesy of Tom Gore.
VTC-3. Stabilized Construction Entrance/Exit with Wheel Wash. This is an aggregate pad, similar
to VTC-1, but includes equipment for tire washing. The wheel wash equipment may be as simple as
hand-held power washing equipment to more advance proprietary systems. When a wheel wash is
provided, it is important to direct wash water to a sediment trap prior to discharge from the site.
Vehicle tracking controls are sometimes installed in combination with a sediment trap to treat runoff.
Maintenance and Removal
Inspect the area for degradation and
replace aggregate or material used for a
stabilized entrance/exit as needed. If the
area becomes clogged and ponds water,
remove and dispose of excess sediment
or replace material with a fresh layer of
aggregate as necessary.
With aggregate vehicle tracking controls,
ensure rock and debris from this area do
not enter the public right-of-way.
Remove sediment that is tracked onto the
public right of way daily or more
frequently as needed. Excess sediment
in the roadway indicates that the
stabilized construction entrance needs
maintenance.
Ensure that drainage ditches at the
entrance/exit area remain clear.
A stabilized entrance should be removed only when there is no longer the potential for vehicle tracking to
occur. This is typically after the site has been stabilized.
When wheel wash equipment is used, be sure that the wash water is discharged to a sediment trap prior to
discharge. Also inspect channels conveying the water from the wash area to the sediment trap and
stabilize areas that may be eroding.
When a construction entrance/exit is removed, excess sediment from the aggregate should be removed
and disposed of appropriately. The entrance should be promptly stabilized with a permanent surface
following removal, typically by paving.
Vehicle Tracking Control (VTC) SM-4
November 2010 Urban Drainage and Flood Control District VTC-3
Urban Storm Drainage Criteria Manual Volume 3
SM-4 Vehicle Tracking Control (VTC)
VTC-4 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Vehicle Tracking Control (VTC) SM-4
November 2010 Urban Drainage and Flood Control District VTC-5
Urban Storm Drainage Criteria Manual Volume 3
SM-4 Vehicle Tracking Control (VTC)
VTC-6 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Inlet Protection (IP) SC-6
August 2013 Urban Drainage and Flood Control District IP-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph IP-1. Inlet protection for a curb opening inlet.
Description
Inlet protection consists of permeable
barriers installed around an inlet to
filter runoff and remove sediment prior
to entering a storm drain inlet. Inlet
protection can be constructed from rock
socks, sediment control logs, silt fence,
block and rock socks, or other materials
approved by the local jurisdiction.
Area inlets can also be protected by
over-excavating around the inlet to
form a sediment trap.
Appropriate Uses
Install protection at storm sewer inlets
that are operable during construction.
Consider the potential for tracked-out
sediment or temporary stockpile areas to contribute sediment to inlets when determining which inlets
must be protected. This may include inlets in the general proximity of the construction area, not limited
to downgradient inlets. Inlet protection is not a stand-alone BMP and should be used in conjunction with
other upgradient BMPs.
Design and Installation
To function effectively, inlet protection measures must be installed to ensure that flows do not bypass the
inlet protection and enter the storm drain without treatment. However, designs must also enable the inlet
to function without completely blocking flows into the inlet in a manner that causes localized flooding.
When selecting the type of inlet protection, consider factors such as type of inlet (e.g., curb or area, sump
or on-grade conditions), traffic, anticipated flows, ability to secure the BMP properly, safety and other
site-specific conditions. For example, block and rock socks will be better suited to a curb and gutter
along a roadway, as opposed to silt fence or sediment control logs, which cannot be properly secured in a
curb and gutter setting, but are effective area inlet protection measures.
Several inlet protection designs are provided in the Design Details. Additionally, a variety of proprietary
products are available for inlet protection that may be approved for use by local governments. If
proprietary products are used, design details and installation procedures from the manufacturer must be
followed. Regardless of the type of inlet protection selected, inlet protection is most effective when
combined with other BMPs such as curb socks and check dams. Inlet protection is often the last barrier
before runoff enters the storm sewer or receiving water.
Design details with notes are provided for these forms of inlet
protection:
IP-1. Block and Rock Sock Inlet Protection for Sump or On-grade
Inlets
IP-2. Curb (Rock) Socks Upstream of Inlet Protection, On-grade
Inlets
Inlet Protection
(various forms)
Functions
Erosion Control No
Sediment Control Yes
Site/Material Management No
SC-6 Inlet Protection (IP)
IP-2 Urban Drainage and Flood Control District August 2013
Urban Storm Drainage Criteria Manual Volume 3
IP-3. Rock Sock Inlet Protection for Sump/Area Inlet
IP-4. Silt Fence Inlet Protection for Sump/Area Inlet
IP-5. Over-excavation Inlet Protection
IP-6. Straw Bale Inlet Protection for Sump/Area Inlet
CIP-1. Culvert Inlet Protection
Propriety inlet protection devices should be installed in accordance with manufacturer specifications.
More information is provided below on selecting inlet protection for sump and on-grade locations.
Inlets Located in a Sump
When applying inlet protection in sump conditions, it is important that the inlet continue to function
during larger runoff events. For curb inlets, the maximum height of the protective barrier should be lower
than the top of the curb opening to allow overflow into the inlet during larger storms without excessive
localized flooding. If the inlet protection height is greater than the curb elevation, particularly if the filter
becomes clogged with sediment, runoff will not enter the inlet and may bypass it, possibly causing
localized flooding, public safety issues, and downstream erosion and damage from bypassed flows.
Area inlets located in a sump setting can be protected through the use of silt fence, concrete block and
rock socks (on paved surfaces), sediment control logs/straw wattles embedded in the adjacent soil and
stacked around the area inlet (on pervious surfaces), over-excavation around the inlet, and proprietary
products providing equivalent functions.
Inlets Located on a Slope
For curb and gutter inlets on paved sloping streets, block and rock sock inlet protection is recommended
in conjunction with curb socks in the gutter leading to the inlet. For inlets located along unpaved roads,
also see the Check Dam Fact Sheet.
Maintenance and Removal
Inspect inlet protection frequently. Inspection and maintenance guidance includes:
Inspect for tears that can result in sediment directly entering the inlet, as well as result in the contents
of the BMP (e.g., gravel) washing into the inlet.
Check for improper installation resulting in untreated flows bypassing the BMP and directly entering
the inlet or bypassing to an unprotected downstream inlet. For example, silt fence that has not been
properly trenched around the inlet can result in flows under the silt fence and directly into the inlet.
Look for displaced BMPs that are no longer protecting the inlet. Displacement may occur following
larger storm events that wash away or reposition the inlet protection. Traffic or equipment may also
crush or displace the BMP.
Monitor sediment accumulation upgradient of the inlet protection.
Inlet Protection (IP) SC-6
August 2013 Urban Drainage and Flood Control District IP-3
Urban Storm Drainage Criteria Manual Volume 3
Remove sediment accumulation from the area upstream of the inlet protection, as needed to maintain
BMP effectiveness, typically when it reaches no more than half the storage capacity of the inlet
protection. For silt fence, remove sediment when it accumulates to a depth of no more than 6 inches.
Remove sediment accumulation from the area upstream of the inlet protection as needed to maintain
the functionality of the BMP.
Propriety inlet protection devices should be inspected and maintained in accordance with
manufacturer specifications. If proprietary inlet insert devices are used, sediment should be removed
in a timely manner to prevent devices from breaking and spilling sediment into the storm drain.
Inlet protection must be removed and properly disposed of when the drainage area for the inlet has
reached final stabilization.
SC-6 Inlet Protection (IP)
IP-4 Urban Drainage and Flood Control District August 2013
Urban Storm Drainage Criteria Manual Volume 3
Inlet Protection (IP) SC-6
August 2013 Urban Drainage and Flood Control District IP-5
Urban Storm Drainage Criteria Manual Volume 3
SC-6 Inlet Protection (IP)
IP-6 Urban Drainage and Flood Control District August 2013
Urban Storm Drainage Criteria Manual Volume 3
Inlet Protection (IP) SC-6
August 2013 Urban Drainage and Flood Control District IP-7
Urban Storm Drainage Criteria Manual Volume 3
SC-6 Inlet Protection (IP)
IP-8 Urban Drainage and Flood Control District August 2013
Urban Storm Drainage Criteria Manual Volume 3
Rock Sock (RS) SC-5
November 2010 Urban Drainage and Flood Control District RS-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph RS-1. Rock socks placed at regular intervals in a curb
line can help reduce sediment loading to storm sewer inlets. Rock
socks can also be used as perimeter controls.
Description
A rock sock is constructed of gravel
that has been wrapped by wire mesh or
a geotextile to form an elongated
cylindrical filter. Rock socks are
typically used either as a perimeter
control or as part of inlet protection.
When placed at angles in the curb line,
rock socks are typically referred to as
curb socks. Rock socks are intended to
trap sediment from stormwater runoff
that flows onto roadways as a result of
construction activities.
Appropriate Uses
Rock socks can be used at the perimeter
of a disturbed area to control localized
sediment loading. A benefit of rock
socks as opposed to other perimeter controls is that they do not have to be trenched or staked into the
ground; therefore, they are often used on roadway construction projects where paved surfaces are present.
Use rock socks in inlet protection applications when the construction of a roadway is substantially
complete and the roadway has been directly connected to a receiving storm system.
Design and Installation
When rock socks are used as perimeter controls, the maximum recommended tributary drainage area per
100 lineal feet of rock socks is approximately 0.25 acres with disturbed slope length of up to 150 feet and
a tributary slope gradient no steeper than 3:1. A rock sock design detail and notes are provided in Detail
RS-1. Also see the Inlet Protection Fact Sheet for design and installation guidance when rock socks are
used for inlet protection and in the curb line.
When placed in the gutter adjacent to a curb, rock socks should protrude no more than two feet from the
curb in order for traffic to pass safely. If located in a high traffic area, place construction markers to alert
drivers and street maintenance workers of their presence.
Maintenance and Removal
Rock socks are susceptible to displacement and breaking due to vehicle traffic. Inspect rock socks for
damage and repair or replace as necessary. Remove sediment by sweeping or vacuuming as needed to
maintain the functionality of the BMP, typically when sediment
has accumulated behind the rock sock to one-half of the sock's
height.
Once upstream stabilization is complete, rock socks and
accumulated sediment should be removed and properly disposed.
Rock Sock
Functions
Erosion Control No
Sediment Control Yes
Site/Material Management No
SC-5 Rock Sock (RS)
RS-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Rock Sock (RS) SC-5
November 2010 Urban Drainage and Flood Control District RS-3
Urban Storm Drainage Criteria Manual Volume 3
Sediment Control Log (SCL) SC-2
November 2010 Urban Drainage and Flood Control District SCL-1
Urban Storm Drainage Criteria Manual Volume 3
Photographs SCL-1 and SCL-2. Sediment control logs used as 1) a
perimeter control around a soil stockpile; and, 2) as a "J-hook"
perimeter control at the corner of a construction site.
Description
A sediment control log is a linear roll
made of natural materials such as
straw, coconut fiber, or other fibrous
material trenched into the ground and
held with a wooden stake. Sediment
control logs are also often referred to
as "straw wattles." They are used as a
sediment barrier to intercept sheet flow
runoff from disturbed areas.
Appropriate Uses
Sediment control logs can be used in
the following applications to trap
sediment:
As perimeter control for stockpiles
and the site.
As part of inlet protection designs.
As check dams in small drainage
ditches. (Sediment control logs
are not intended for use in
channels with high flow
velocities.)
On disturbed slopes to shorten flow
lengths (as an erosion control).
As part of multi-layered perimeter control along a receiving water such as a stream, pond or wetland.
Sediment control logs work well in combination with other layers of erosion and sediment controls.
Design and Installation
Sediment control logs should be installed along the contour to avoid concentrating flows. The maximum
allowable tributary drainage area per 100 lineal feet of sediment control log, installed along the contour, is
approximately 0.25 acres with a disturbed slope length of up to 150 feet and a tributary slope gradient no
steeper than 3:1. Longer and steeper slopes require additional measures. This recommendation only
applies to sediment control logs installed along the contour. When installed for other uses, such as
perimeter control, it should be installed in a way that will not
produce concentrated flows. For example, a "J-hook"
installation may be appropriate to force runoff to pond and
evaporate or infiltrate in multiple areas rather than concentrate
and cause erosive conditions parallel to the BMP.
Sediment Control Log
Functions
Erosion Control Moderate
Sediment Control Yes
Site/Material Management No
SC-2 Sediment Control Log (SCL)
SCL-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Although sediment control logs initially allow runoff to flow through the BMP, they can quickly become
a barrier and should be installed is if they are impermeable.
Design details and notes for sediment control logs are provided in Detail SCL-1. Sediment logs must be
properly trenched and staked into the ground to prevent undercutting, bypassing and displacement. When
installed on slopes, sediment control logs should be installed along the contours (i.e., perpendicular to
flow).
Improper installation can lead to poor performance. Be sure that sediment control logs are properly
trenched, anchored and tightly jointed.
Maintenance and Removal
Be aware that sediment control logs will eventually degrade. Remove accumulated sediment before the
depth is one-half the height of the sediment log and repair damage to the sediment log, typically by
replacing the damaged section.
Once the upstream area is stabilized, remove and properly dispose of the logs. Areas disturbed beneath
the logs may need to be seeded and mulched. Sediment control logs that are biodegradable may
occasionally be left in place (e.g., when logs are used in conjunction with erosion control blankets as
permanent slope breaks). However, removal of sediment control logs after final stabilization is typically
recommended when used in perimeter control, inlet protection and check dam applications.
Sediment Control Log (SCL) SC-2
November 2010 Urban Drainage and Flood Control District SCL-3
Urban Storm Drainage Criteria Manual Volume 3
SC-2 Sediment Control Log (SCL)
SCL-4 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Sediment Control Log (SCL) SC-2
November 2010 Urban Drainage and Flood Control District SCL-5
Urban Storm Drainage Criteria Manual Volume 3
Good Housekeeping Practices (GH) MM-3
November 2010 Urban Drainage and Flood Control District GH-1
Urban Storm Drainage Criteria Manual Volume 3
Photographs GH-1 and GH-2. Proper materials
storage and secondary containment for fuel tanks
are important good housekeeping practices. Photos
courtesy of CDOT and City of Aurora.
Description
Implement construction site good housekeeping practices to
prevent pollution associated with solid, liquid and hazardous
construction-related materials and wastes. Stormwater
Management Plans (SWMPs) should clearly specify BMPs
including these good housekeeping practices:
Provide for waste management.
Establish proper building material staging areas.
Designate paint and concrete washout areas.
Establish proper equipment/vehicle fueling and
maintenance practices.
Control equipment/vehicle washing and allowable non-
stormwater discharges.
Develop a spill prevention and response plan.
Acknowledgement: This Fact Sheet is based directly on
EPA guidance provided in Developing Your Stormwater
Pollution Prevent Plan (EPA 2007).
Appropriate Uses
Good housekeeping practices are necessary at all construction sites.
Design and Installation
The following principles and actions should be addressed in SWMPs:
Provide for Waste Management. Implement management procedures and practices to prevent or
reduce the exposure and transport of pollutants in stormwater from solid, liquid and sanitary wastes
that will be generated at the site. Practices such as trash disposal, recycling, proper material handling,
and cleanup measures can reduce the potential for stormwater runoff to pick up construction site
wastes and discharge them to surface waters. Implement a comprehensive set of waste-management
practices for hazardous or toxic materials, such as paints, solvents, petroleum products, pesticides,
wood preservatives, acids, roofing tar, and other materials. Practices should include storage,
handling, inventory, and cleanup procedures, in case of spills. Specific practices that should be
considered include:
Solid or Construction Waste
o Designate trash and bulk waste-collection areas on-
site.
Good Housekeeping
Functions
Erosion Control No
Sediment Control No
Site/Material Management Yes
MM-3 Good Housekeeping Practices (GH)
GH-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Photograph GH-3. Locate portable toilet facilities on level
surfaces away from waterways and storm drains. Photo
courtesy of WWE.
o Recycle materials whenever possible (e.g., paper, wood, concrete, oil).
o Segregate and provide proper disposal options for hazardous material wastes.
o Clean up litter and debris from the construction site daily.
o Locate waste-collection areas away from streets, gutters, watercourses, and storm drains. Waste-
collection areas (dumpsters, and such) are often best located near construction site entrances to
minimize traffic on disturbed soils. Consider secondary containment around waste collection
areas to minimize the likelihood of contaminated discharges.
o Empty waste containers before they are full and overflowing.
Sanitary and Septic Waste
o Provide convenient, well-maintained, and properly located toilet facilities on-site.
o Locate toilet facilities away from storm drain inlets and waterways to prevent accidental spills
and contamination of stormwater.
o Maintain clean restroom facilities and empty portable toilets regularly.
o Where possible, provide secondary containment pans under portable toilets.
o Provide tie-downs or stake-downs for portable toilets.
o Educate employees, subcontractors, and suppliers on locations of facilities.
o Treat or dispose of sanitary and septic waste in accordance with state or local regulations. Do not
discharge or bury wastewater at the construction site.
o Inspect facilities for leaks. If found, repair or replace immediately.
o Special care is necessary during maintenance (pump out) to ensure that waste and/or biocide are
not spilled on the ground.
Hazardous Materials and Wastes
o Develop and implement employee and
subcontractor education, as needed, on
hazardous and toxic waste handling,
storage, disposal, and cleanup.
o Designate hazardous waste-collection
areas on-site.
o Place all hazardous and toxic material
wastes in secondary containment.
Good Housekeeping Practices (GH) MM-3
November 2010 Urban Drainage and Flood Control District GH-3
Urban Storm Drainage Criteria Manual Volume 3
o Hazardous waste containers should be inspected to ensure that all containers are labeled properly
and that no leaks are present.
Establish Proper Building Material Handling and Staging Areas. The SWMP should include
comprehensive handling and management procedures for building materials, especially those that are
hazardous or toxic. Paints, solvents, pesticides, fuels and oils, other hazardous materials or building
materials that have the potential to contaminate stormwater should be stored indoors or under cover
whenever possible or in areas with secondary containment. Secondary containment measures prevent
a spill from spreading across the site and may include dikes, berms, curbing, or other containment
methods. Secondary containment techniques should also ensure the protection of groundwater.
Designate staging areas for activities such as fueling vehicles, mixing paints, plaster, mortar, and
other potential pollutants. Designated staging areas enable easier monitoring of the use of materials
and clean up of spills. Training employees and subcontractors is essential to the success of this
pollution prevention principle. Consider the following specific materials handling and staging
practices:
o Train employees and subcontractors in proper handling and storage practices.
o Clearly designate site areas for staging and storage with signs and on construction drawings.
Staging areas should be located in areas central to the construction site. Segment the staging area
into sub-areas designated for vehicles, equipment, or stockpiles. Construction entrances and exits
should be clearly marked so that delivery vehicles enter/exit through stabilized areas with vehicle
tracking controls (See Vehicle Tracking Control Fact Sheet).
o Provide storage in accordance with Spill Protection, Control and Countermeasures (SPCC)
requirements and plans and provide cover and impermeable perimeter control, as necessary, for
hazardous materials and contaminated soils that must be stored on site.
o Ensure that storage containers are regularly inspected for leaks, corrosion, support or foundation
failure, or other signs of deterioration and tested for soundness.
o Reuse and recycle construction materials when possible.
Designate Concrete Washout Areas. Concrete contractors should be encouraged to use the washout
facilities at their own plants or dispatch facilities when feasible; however, concrete washout
commonly occurs on construction sites. If it is necessary to provide for concrete washout areas on-
site, designate specific washout areas and design facilities to handle anticipated washout water.
Washout areas should also be provided for paint and stucco operations. Because washout areas can
be a source of pollutants from leaks or spills, care must be taken with regard to their placement and
proper use. See the Concrete Washout Area Fact Sheet for detailed guidance.
Both self-constructed and prefabricated washout containers can fill up quickly when concrete, paint,
and stucco work are occurring on large portions of the site. Be sure to check for evidence that
contractors are using the washout areas and not dumping materials onto the ground or into drainage
facilities. If the washout areas are not being used regularly, consider posting additional signage,
relocating the facilities to more convenient locations, or providing training to workers and
contractors.
When concrete, paint, or stucco is part of the construction process, consider these practices which will
help prevent contamination of stormwater. Include the locations of these areas and the maintenance
and inspection procedures in the SWMP.
MM-3 Good Housekeeping Practices (GH)
GH-4 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
o Do not washout concrete trucks or equipment into storm drains, streets, gutters, uncontained
areas, or streams. Only use designated washout areas.
o Establish washout areas and advertise their locations with signs. Ensure that signage remains in
good repair.
o Provide adequate containment for the amount of wash water that will be used.
o Inspect washout structures daily to detect leaks or tears and to identify when materials need to be
removed.
o Dispose of materials properly. The preferred method is to allow the water to evaporate and to
recycle the hardened concrete. Full service companies may provide dewatering services and
should dispose of wastewater properly. Concrete wash water can be highly polluted. It should
not be discharged to any surface water, storm sewer system, or allowed to infiltrate into the
ground in the vicinity of waterbodies. Washwater should not be discharged to a sanitary sewer
system without first receiving written permission from the system operator.
Establish Proper Equipment/Vehicle Fueling and Maintenance Practices. Create a clearly
designated on-site fueling and maintenance area that is clean and dry. The on-site fueling area should
have a spill kit, and staff should know how to use it. If possible, conduct vehicle fueling and
maintenance activities in a covered area. Consider the following practices to help prevent the
discharge of pollutants to stormwater from equipment/vehicle fueling and maintenance. Include the
locations of designated fueling and maintenance areas and inspection and maintenance procedures in
the SWMP.
o Train employees and subcontractors in proper fueling procedures (stay with vehicles during
fueling, proper use of pumps, emergency shutoff valves, etc.).
o Inspect on-site vehicles and equipment regularly for leaks, equipment damage, and other service
problems.
o Clearly designate vehicle/equipment service areas away from drainage facilities and watercourses
to prevent stormwater run-on and runoff.
o Use drip pans, drip cloths, or absorbent pads when replacing spent fluids.
o Collect all spent fluids, store in appropriate labeled containers in the proper storage areas, and
recycle fluids whenever possible.
Control Equipment/Vehicle Washing and Allowable Non-Stormwater Discharges. Implement
practices to prevent contamination of surface and groundwater from equipment and vehicle wash
water. Representative practices include:
o Educate employees and subcontractors on proper washing procedures.
o Use off-site washing facilities, when available.
o Clearly mark the washing areas and inform workers that all washing must occur in this area.
o Contain wash water and treat it using BMPs. Infiltrate washwater when possible, but maintain
separation from drainage paths and waterbodies.
Good Housekeeping Practices (GH) MM-3
November 2010 Urban Drainage and Flood Control District GH-5
Urban Storm Drainage Criteria Manual Volume 3
o Use high-pressure water spray at vehicle washing facilities without detergents. Water alone can
remove most dirt adequately.
o Do not conduct other activities, such as vehicle repairs, in the wash area.
o Include the location of the washing facilities and the inspection and maintenance procedures in
the SWMP.
Develop a Spill Prevention and Response Plan. Spill prevention and response procedures must be
identified in the SWMP. Representative procedures include identifying ways to reduce the chance of
spills, stop the source of spills, contain and clean up spills, dispose of materials contaminated by
spills, and train personnel responsible for spill prevention and response. The plan should also specify
material handling procedures and storage requirements and ensure that clear and concise spill cleanup
procedures are provided and posted for areas in which spills may potentially occur. When developing
a spill prevention plan, include the following:
o Note the locations of chemical storage areas, storm drains, tributary drainage areas, surface
waterbodies on or near the site, and measures to stop spills from leaving the site.
o Provide proper handling and safety procedures for each type of waste. Keep Material Safety Data
Sheets (MSDSs) for chemical used on site with the SWMP.
o Establish an education program for employees and subcontractors on the potential hazards to
humans and the environment from spills and leaks.
o Specify how to notify appropriate authorities, such as police and fire departments, hospitals, or
municipal sewage treatment facilities to request assistance. Emergency procedures and contact
numbers should be provided in the SWMP and posted at storage locations.
o Describe the procedures, equipment and materials for immediate cleanup of spills and proper
disposal.
o Identify personnel responsible for implementing the plan in the event of a spill. Update the spill
prevention plan and clean up materials as changes occur to the types of chemicals stored and used
at the facility.
MM-3 Good Housekeeping Practices (GH)
GH-6 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Spill Prevention, Control, and Countermeasure (SPCC) Plan
Construction sites may be subject to 40 CFR Part 112 regulations that require the preparation and
implementation of a SPCC Plan to prevent oil spills from aboveground and underground storage tanks.
The facility is subject to this rule if it is a non-transportation-related facility that:
Has a total storage capacity greater than 1,320 gallons or a completely buried storage capacity
greater than 42,000 gallons.
Could reasonably be expected to discharge oil in quantities that may be harmful to navigable waters
of the United States and adjoining shorelines.
Furthermore, if the facility is subject to 40 CFR Part 112, the SWMP should reference the SPCC Plan.
To find out more about SPCC Plans, see EPA's website on SPPC at www.epa.gov/oilspill/spcc.htm.
Reporting Oil Spills
In the event of an oil spill, contact the National Response Center toll free at 1-800-424- 8802 for
assistance, or for more details, visit their website: www.nrc.uscg.mil.
Maintenance and Removal
Effective implementation of good housekeeping practices is dependent on clear designation of personnel
responsible for supervising and implementing good housekeeping programs, such as site cleanup and
disposal of trash and debris, hazardous material management and disposal, vehicle and equipment
maintenance, and other practices. Emergency response "drills" may aid in emergency preparedness.
Checklists may be helpful in good housekeeping efforts.
Staging and storage areas require permanent stabilization when the areas are no longer being used for
construction-related activities.
Construction-related materials, debris and waste must be removed from the construction site once
construction is complete.
Design Details
See the following Fact Sheets for related Design Details:
MM-1 Concrete Washout Area
MM-2 Stockpile Management
SM-4 Vehicle Tracking Control
Design details are not necessary for other good housekeeping practices; however, be sure to designate
where specific practices will occur on the appropriate construction drawings.
Stockpile Management (SP) MM-2
November 2010 Urban Drainage and Flood Control District SP-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph SP-1. A topsoil stockpile that has been partially
revegetated and is protected by silt fence perimeter control.
Description
Stockpile management includes
measures to minimize erosion and
sediment transport from soil stockpiles.
Appropriate Uses
Stockpile management should be used
when soils or other erodible materials
are stored at the construction site.
Special attention should be given to
stockpiles in close proximity to natural
or manmade storm systems.
Design and Installation
Locate stockpiles away from all drainage system components including storm sewer inlets. Where
practical, choose stockpile locations that that will remain undisturbed for the longest period of time as the
phases of construction progress. Place sediment control BMPs around the perimeter of the stockpile, such
as sediment control logs, rock socks, silt fence, straw bales and sand bags. See Detail SP-1 for guidance
on proper establishment of perimeter controls around a stockpile. For stockpiles in active use, provide a
stabilized designated access point on the upgradient side of the stockpile.
Stabilize the stockpile surface with surface roughening, temporary seeding and mulching, erosion control
blankets, or soil binders. Soils stockpiled for an extended period (typically for more than 60 days) should
be seeded and mulched with a temporary grass cover once the stockpile is placed (typically within 14
days). Use of mulch only or a soil binder is acceptable if the stockpile will be in place for a more limited
time period (typically 30-60 days). Timeframes for stabilization of stockpiles noted in this fact sheet are
"typical" guidelines. Check permit requirements for specific federal, state, and/or local requirements that
may be more prescriptive.
Stockpiles should not be placed in streets or paved areas unless no other practical alternative exists. See
the Stabilized Staging Area Fact Sheet for guidance when staging in roadways is unavoidable due to
space or right-of-way constraints. For paved areas, rock socks must be used for perimeter control and all
inlets with the potential to receive sediment from the stockpile (even from vehicle tracking) must be
protected.
Maintenance and Removal
Inspect perimeter controls and inlet protection in accordance with their respective BMP Fact Sheets.
Where seeding, mulch and/or soil binders are used, reseeding or reapplication of soil binder may be
necessary.
When temporary removal of a perimeter BMP is necessary
to access a stockpile, ensure BMPs are reinstalled in
accordance with their respective design detail section.
Stockpile Management
Functions
Erosion Control Yes
Sediment Control Yes
Site/Material Management Yes
MM-2 Stockpile Management (SM)
SP-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
When the stockpile is no longer needed, properly dispose of excess materials and revegetate or otherwise
stabilize the ground surface where the stockpile was located.
Stockpile Management (SP) MM-2
November 2010 Urban Drainage and Flood Control District SP-3
Urban Storm Drainage Criteria Manual Volume 3
MM-2 Stockpile Management (SM)
SP-4 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Stockpile Management (SP) MM-2
November 2010 Urban Drainage and Flood Control District SP-5
Urban Storm Drainage Criteria Manual Volume 3
MM-2 Stockpile Management (SM)
SP-6 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Concrete Washout Area (CWA) MM-1
November 2010 Urban Drainage and Flood Control District CWA-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph CWA-1. Example of concrete washout area. Note gravel
tracking pad for access and sign.
Description
Concrete waste management involves
designating and properly managing a
specific area of the construction site as a
concrete washout area. A concrete
washout area can be created using one of
several approaches designed to receive
wash water from washing of tools and
concrete mixer chutes, liquid concrete
waste from dump trucks, mobile batch
mixers, or pump trucks. Three basic
approaches are available: excavation of a
pit in the ground, use of an above ground
storage area, or use of prefabricated haul-
away concrete washout containers.
Surface discharges of concrete washout
water from construction sites are prohibited.
Appropriate Uses
Concrete washout areas must be designated on all sites that will generate concrete wash water or liquid
concrete waste from onsite concrete mixing or concrete delivery.
Because pH is a pollutant of concern for washout activities, when unlined pits are used for concrete
washout, the soil must have adequate buffering capacity to result in protection of state groundwater
standards; otherwise, a liner/containment must be used. The following management practices are
recommended to prevent an impact from unlined pits to groundwater:
The use of the washout site should be temporary (less than 1 year), and
The washout site should be not be located in an area where shallow groundwater may be present, such
as near natural drainages, springs, or wetlands.
Design and Installation
Concrete washout activities must be conducted in a manner that does not contribute pollutants to surface
waters or stormwater runoff. Concrete washout areas may be lined or unlined excavated pits in the
ground, commercially manufactured prefabricated washout containers, or aboveground holding areas
constructed of berms, sandbags or straw bales with a plastic liner.
Although unlined washout areas may be used, lined pits may be required to protect groundwater under
certain conditions.
Do not locate an unlined washout area within 400 feet
of any natural drainage pathway or waterbody or
within 1,000 feet of any wells or drinking water
sources. Even for lined concrete washouts, it is
advisable to locate the facility away from waterbodies
and drainage paths. If site constraints make these
Concrete Washout Area
Functions
Erosion Control No
Sediment Control No
Site/Material Management Yes
MM-1 Concrete Washout Area (CWA)
CWA-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
setbacks infeasible or if highly permeable soils exist in the area, then the pit must be installed with an
impermeable liner (16 mil minimum thickness) or surface storage alternatives using prefabricated
concrete washout devices or a lined aboveground storage area should be used.
Design details with notes are provided in Detail CWA-1 for pits and CWA-2 for aboveground storage
areas. Pre-fabricated concrete washout container information can be obtained from vendors.
Maintenance and Removal
A key consideration for concrete washout areas is to ensure that adequate signage is in place identifying
the location of the washout area. Part of inspecting and maintaining washout areas is ensuring that
adequate signage is provided and in good repair and that the washout area is being used, as opposed to
washout in non-designated areas of the site.
Remove concrete waste in the washout area, as needed to maintain BMP function (typically when filled to
about two-thirds of its capacity). Collect concrete waste and deliver offsite to a designated disposal
location.
Upon termination of use of the washout site, accumulated solid waste, including concrete waste and any
contaminated soils, must be removed from the site to prevent on-site disposal of solid waste. If the wash
water is allowed to evaporate and the concrete hardens, it may be recycled.
Photograph CWA-3. Earthen concrete washout. Photo
courtesy of CDOT.
Photograph CWA-2. Prefabricated concrete washout. Photo
courtesy of CDOT.
Concrete Washout Area (CWA) MM-1
November 2010 Urban Drainage and Flood Control District CWA-3
Urban Storm Drainage Criteria Manual Volume 3
MM-1 Concrete Washout Area (CWA)
CWA-4 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Rough Cut Street Control (RCS) EC-9
November 2010 Urban Drainage and Flood Control District RCS-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph RCS-1. Rough cut street controls.
Description
Rough cut street controls are rock or
earthen berms placed along dirt roadways
that are under construction or used for
construction access. These temporary
berms intercept sheet flow and divert
runoff from the roadway, and control
erosion by minimizing concentration of
flow and reducing runoff velocity.
Appropriate Uses
Appropriate uses include:
Temporary dirt construction roadways
that have not received roadbase.
Roadways under construction that will not be paved within 14 days of final grading, and that have not
yet received roadbase.
Design and Installation
Rough cut street controls are designed to redirect sheet flow off the dirt roadway to prevent water from
concentrating and eroding the soil. These controls consist of runoff barriers that are constructed at
intervals along the road. These barriers are installed perpendicular to the longitudinal slope from the
outer edge of the roadside swale to the crown of the road. The barriers are positioned alternately from the
right and left side of the road to allow construction traffic to pass in the lane not barred. If construction
traffic is expected to be congested and a vehicle tracking control has been constructed, rough-cut street
controls may be omitted for 400 feet from the entrance. Runoff from the controls should be directed to
another stormwater BMP such as a roadside swale with check dams once removed from the roadway. See
Detail RCS-1 for additional information.
Maintenance and Removal
Inspect street controls for erosion and stability. If rills are forming in the roadway or cutting through the
control berms, place the street controls at shorter intervals. If earthen berms are used, periodic
recompaction may be necessary. When rock berms are used,
repair and/or replace as necessary when damaged. Street
controls may be removed 14 days prior to road surfacing and
paving.
Rough Cut Street Control
Functions
Erosion Control Yes
Sediment Control Moderate
Site/Material Management No
EC-9 Rough Cut Street Control (RCS)
RCS-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Rough Cut Street Control (RCS) EC-9
November 2010 Urban Drainage and Flood Control District RCS-3
Urban Storm Drainage Criteria Manual Volume 3
Temporary Outlet Protection (TOP) EC-8
November 2010 Urban Drainage and Flood Control District TOP-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph TOP-1. Riprap outlet protection.
Description
Outlet protection helps to reduce erosion
immediately downstream of a pipe,
culvert, slope drain, rundown or other
conveyance with concentrated, high-
velocity flows. Typical outlet protection
consists of riprap or rock aprons at the
conveyance outlet.
Appropriate Uses
Outlet protection should be used when a
conveyance discharges onto a disturbed
area where there is potential for accelerated
erosion due to concentrated flow. Outlet
protection should be provided where the velocity at the culvert outlet exceeds the maximum permissible
velocity of the material in the receiving channel.
Note: This Fact Sheet and detail are for temporary outlet protection, outlets that are intended to be used
for less than 2 years. For permanent, long-term outlet protection, see the Major Drainage chapter of
Volume 1.
Design and Installation
Design outlet protection to handle runoff from the largest drainage area that may be contributing runoff
during construction (the drainage area may change as a result of grading). Key in rock, around the entire
perimeter of the apron, to a minimum depth of 6 inches for stability. Extend riprap to the height of the
culvert or the normal flow depth of the downstream channel, whichever is less. Additional erosion
control measures such as vegetative lining, turf reinforcement mat and/or other channel lining methods
may be required downstream of the outlet protection if the channel is susceptible to erosion. See Design
Detail OP-1 for additional information.
Maintenance and Removal
Inspect apron for damage and displaced rocks. If rocks are missing or significantly displaced, repair or
replace as necessary. If rocks are continuously missing or displaced, consider increasing the size of the
riprap or deeper keying of the perimeter.
Remove sediment accumulated at the outlet before the outlet protection becomes buried and ineffective.
When sediment accumulation is noted, check that upgradient BMPs, including inlet protection, are in
effective operating condition.
Outlet protection may be removed once the pipe is no longer
draining an upstream area, or once the downstream area has
been sufficiently stabilized. If the drainage pipe is
permanent, outlet protection can be left in place; however,
permanent outlet protection should be designed and
constructed in accordance with the requirements of the
Major Drainage chapter of Volume 2.
Outlet Protection
Functions
Erosion Control Yes
Sediment Control Moderate
Site/Material Management No
EC-8 Temporary Outlet Protection (TOP)
TOP-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Temporary Outlet Protection (TOP) EC-8
November 2010 Urban Drainage and Flood Control District TOP-3
Urban Storm Drainage Criteria Manual Volume 3
Rolled Erosion Control Products (RECP) EC-6
November 2010 Urban Drainage and Flood Control District RECP-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph RECP-1. Erosion control blanket protecting the slope from
erosion and providing favorable conditions for revegetation.
Description
Rolled Erosion Control Products
(RECPs) include a variety of
temporary or permanently installed
manufactured products designed to
control erosion and enhance vegetation
establishment and survivability,
particularly on slopes and in channels.
For applications where natural
vegetation alone will provide sufficient
permanent erosion protection,
temporary products such as netting,
open weave textiles and a variety of
erosion control blankets (ECBs) made
of biodegradable natural materials
(e.g., straw, coconut fiber) can be used.
For applications where natural
vegetation alone will not be sustainable under expected flow conditions, permanent rolled erosion control
products such as turf reinforcement mats (TRMs) can be used. In particular, turf reinforcement mats are
designed for discharges that exert velocities and sheer stresses that exceed the typical limits of mature
natural vegetation.
Appropriate Uses
RECPs can be used to control erosion in conjunction with revegetation efforts, providing seedbed
protection from wind and water erosion. These products are often used on disturbed areas on steep
slopes, in areas with highly erosive soils, or as part of drainageway stabilization. In order to select the
appropriate RECP for site conditions, it is important to have a general understanding of the general types
of these products, their expected longevity, and general characteristics.
The Erosion Control Technology Council (ECTC 2005) characterizes rolled erosion control products
according to these categories:
Mulch control netting: A planar woven natural fiber or extruded geosynthetic mesh used as a
temporary degradable rolled erosion control product to anchor loose fiber mulches.
Open weave textile: A temporary degradable rolled erosion control product composed of processed
natural or polymer yarns woven into a matrix, used to provide erosion control and facilitate
vegetation establishment.
Erosion control blanket (ECB): A temporary
degradable rolled erosion control product composed of
processed natural or polymer fibers which are
mechanically, structurally or chemically bound together
to form a continuous matrix to provide erosion control
and facilitate vegetation establishment. ECBs can be
further differentiated into rapidly degrading single-net
and double-net types or slowly degrading types.
Rolled Erosion Control Products
Functions
Erosion Control Yes
Sediment Control No
Site/Material Management No
EC-6 Rolled Erosion Control Products (RECP)
RECP-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Turf Reinforcement Mat (TRM): A rolled erosion control product composed of non-degradable
synthetic fibers, filaments, nets, wire mesh, and/or other elements, processed into a permanent, three-
dimensional matrix of sufficient thickness. TRMs, which may be supplemented with degradable
components, are designed to impart immediate erosion protection, enhance vegetation establishment
and provide long-term functionality by permanently reinforcing vegetation during and after
maturation. Note: TRMs are typically used in hydraulic applications, such as high flow ditches and
channels, steep slopes, stream banks, and shorelines, where erosive forces may exceed the limits of
natural, unreinforced vegetation or in areas where limited vegetation establishment is anticipated.
Tables RECP-1 and RECP-2 provide guidelines for selecting rolled erosion control products appropriate
to site conditions and desired longevity. Table RECP-1 is for conditions where natural vegetation alone
will provide permanent erosion control, whereas Table RECP-2 is for conditions where vegetation alone
will not be adequately stable to provide long-term erosion protection due to flow or other conditions.
Rolled Erosion Control Products (RECP) EC-6
November 2010 Urban Drainage and Flood Control District RECP-3
Urban Storm Drainage Criteria Manual Volume 3
Table RECP-1. ECTC Standard Specification for Temporary Rolled Erosion Control Products
(Adapted from Erosion Control Technology Council 2005)
Product Description Slope
Applications*
Channel
Applications*
Minimum
Tensile
Strength1
Expected
Longevity
Maximum
Gradient C Factor2,5 Max. Shear
Stress3,4,6
Mulch Control Nets 5:1 (H:V) ≤0.10 @
5:1
0.25 lbs/ft2
(12 Pa)
5 lbs/ft
(0.073 kN/m)
Up to 12
months
Netless Rolled
Erosion Control
Blankets
4:1 (H:V) ≤0.10 @
4:1
0.5 lbs/ft2
(24 Pa)
5 lbs/ft
(0.073 kN/m)
Single-net Erosion
Control Blankets &
Open Weave Textiles
3:1 (H:V) ≤0.15 @
3:1
1.5 lbs/ft2
(72 Pa)
50 lbs/ft
(0.73 kN/m)
Double-net Erosion
Control Blankets 2:1 (H:V)
≤0.20 @
2:1
1.75 lbs/ft2
(84 Pa)
75 lbs/ft
(1.09 kN/m)
Mulch Control Nets 5:1 (H:V) ≤0.10 @
5:1
0.25 lbs/ft2
(12 Pa)
25 lbs/ft
(0.36 kN/m) 24 months
Erosion Control
Blankets & Open
Weave Textiles
EC-6 Rolled Erosion Control Products (RECP)
RECP-4 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Table RECP-2. ECTC Standard Specification for Permanent1 Rolled Erosion Control Products
(Adapted from: Erosion Control Technology Council 2005)
Product Type Slope
Applications Channel Applications
TRMs with a minimum thickness of
0.25 inches (6.35 mm) per ASTM D
6525 and UV stability of 80% per
ASTM D 4355 (500 hours
exposure).
Maximum
Gradient
Maximum
Shear Stress4,5
Minimum
Tensile
Strength2,3
0.5:1 (H:V) 6.0 lbs/ft2 (288 Pa) 125 lbs/ft (1.82
kN/m)
0.5:1 (H:V) 8.0 lbs/ft2 (384 Pa) 150 lbs/ft (2.19
kN/m)
0.5:1 (H:V) 10.0 lbs/ft2 (480 Pa) 175 lbs/ft (2.55
kN/m)
1 For TRMs containing degradable components, all property values must be obtained on the non-
degradable portion of the matting alone.
2 Minimum Average Roll Values, machine direction only for tensile strength determination using ASTM
D 6818 (Supersedes Mod. ASTM D 5035 for RECPs)
3 Field conditions with high loading and/or high survivability requirements may warrant the use of a TRM
with a tensile strength of 44 kN/m (3,000 lb/ft) or greater.
4 Required minimum shear stress TRM (fully vegetated) can sustain without physical damage or excess
erosion (> 12.7 mm (0.5 in.) soil loss) during a 30-minute flow event in large scale testing.
5 Acceptable large-scale testing protocols may include ASTM D 6460, or other independent testing
deemed acceptable by the engineer.
Design and Installation
RECPs should be installed according to manufacturer’s specifications and guidelines. Regardless of the
type of product used, it is important to ensure no gaps or voids exist under the material and that all
corners of the material are secured using stakes and trenching. Continuous contact between the product
and the soil is necessary to avoid failure. Never use metal stakes to secure temporary erosion control
products. Often wooden stakes are used to anchor RECPs; however, wood stakes may present installation
and maintenance challenges and generally take a long time to biodegrade. Some local jurisdictions have
had favorable experiences using biodegradable stakes.
This BMP Fact Sheet provides design details for several commonly used ECB applications, including:
ECB-1 Pipe Outlet to Drainageway
ECB-2 Small Ditch or Drainageway
ECB-3 Outside of Drainageway
Rolled Erosion Control Products (RECP) EC-6
November 2010 Urban Drainage and Flood Control District RECP-5
Urban Storm Drainage Criteria Manual Volume 3
Staking patterns are also provided in the design details according to these factors:
ECB type
Slope or channel type
For other types of RECPs including TRMs, these design details are intended to serve as general
guidelines for design and installation; however, engineers should adhere to manufacturer’s installation
recommendations.
Maintenance and Removal
Inspection of erosion control blankets and other RECPs includes:
Check for general signs of erosion, including voids beneath the mat. If voids are apparent, fill the
void with suitable soil and replace the erosion control blanket, following the appropriate staking
pattern.
Check for damaged or loose stakes and secure loose portions of the blanket.
Erosion control blankets and other RECPs that are biodegradable typically do not need to be removed
after construction. If they must be removed, then an alternate soil stabilization method should be installed
promptly following removal.
Turf reinforcement mats, although generally resistant to biodegradation, are typically left in place as a
dense vegetated cover grows in through the mat matrix. The turf reinforcement mat provides long-term
stability and helps the established vegetation resist erosive forces.
EC-6 Rolled Erosion Control Products (RECP)
RECP-6 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Rolled Erosion Control Products (RECP) EC-6
November 2010 Urban Drainage and Flood Control District RECP-7
Urban Storm Drainage Criteria Manual Volume 3
EC-6 Rolled Erosion Control Products (RECP)
RECP-8 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Rolled Erosion Control Products (RECP) EC-6
November 2010 Urban Drainage and Flood Control District RECP-9
Urban Storm Drainage Criteria Manual Volume 3
Mulching (MU) EC-4
June 2012 Urban Drainage and Flood Control District MU-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph MU-1. An area that was recently seeded, mulched,
and crimped.
Description
Mulching consists of evenly applying
straw, hay, shredded wood mulch, rock,
bark or compost to disturbed soils and
securing the mulch by crimping, tackifiers,
netting or other measures. Mulching helps
reduce erosion by protecting bare soil
from rainfall impact, increasing
infiltration, and reducing runoff.
Although often applied in conjunction
with temporary or permanent seeding, it
can also be used for temporary
stabilization of areas that cannot be
reseeded due to seasonal constraints.
Mulch can be applied either using
standard mechanical dry application
methods or using hydromulching equipment
that hydraulically applies a slurry of water,
wood fiber mulch, and often a tackifier.
Appropriate Uses
Use mulch in conjunction with seeding to help protect the seedbed and stabilize the soil. Mulch can also
be used as a temporary cover on low to mild slopes to help temporarily stabilize disturbed areas where
growing season constraints prevent effective reseeding. Disturbed areas should be properly mulched and
tacked, or seeded, mulched and tacked promptly after final grade is reached (typically within no longer
than 14 days) on portions of the site not otherwise permanently stabilized.
Standard dry mulching is encouraged in most jurisdictions; however, hydromulching may not be allowed
in certain jurisdictions or may not be allowed near waterways.
Do not apply mulch during windy conditions.
Design and Installation
Prior to mulching, surface-roughen areas by rolling with a crimping or punching type roller or by track
walking. Track walking should only be used where other methods are impractical because track walking
with heavy equipment typically compacts the soil.
A variety of mulches can be used effectively at construction
sites. Consider the following:
Mulch
Functions
Erosion Control Yes
Sediment Control Moderate
Site/Material Management No
EC-4 Mulching (MU)
MU-2 Urban Drainage and Flood Control District June 2012
Urban Storm Drainage Criteria Manual Volume 3
Clean, weed-free and seed-free cereal grain straw should be applied evenly at a rate of 2 tons per acre and
must be tacked or fastened by a method suitable for the condition of the site. Straw mulch must be
anchored (and not merely placed) on the surface. This can be accomplished mechanically by crimping or
with the aid of tackifiers or nets. Anchoring with a crimping implement is preferred, and is the
recommended method for areas flatter than 3:1. Mechanical crimpers must be capable of tucking the long
mulch fibers into the soil to a depth of 3 inches without cutting them. An agricultural disk, while not an
ideal substitute, may work if the disk blades are dull or blunted and set vertically; however, the frame may
have to be weighted to afford proper soil penetration.
Grass hay may be used in place of straw; however, because hay is comprised of the entire plant including
seed, mulching with hay may seed the site with non-native grass species which might in turn out-compete
the native seed. Alternatively, native species of grass hay may be purchased, but can be difficult to find
and are more expensive than straw. Purchasing and utilizing a certified weed-free straw is an easier and
less costly mulching method. When using grass hay, follow the same guidelines as for straw (provided
above).
On small areas sheltered from the wind and heavy runoff, spraying a tackifier on the mulch is satisfactory
for holding it in place. For steep slopes and special situations where greater control is needed, erosion
control blankets anchored with stakes should be used instead of mulch.
Hydraulic mulching consists of wood cellulose fibers mixed with water and a tackifying agent and should
be applied at a rate of no less than 1,500 pounds per acre (1,425 lbs of fibers mixed with at least 75 lbs of
tackifier) with a hydraulic mulcher. For steeper slopes, up to 2000 pounds per acre may be required for
effective hydroseeding. Hydromulch typically requires up to 24 hours to dry; therefore, it should not be
applied immediately prior to inclement weather. Application to roads, waterways and existing vegetation
should be avoided.
Erosion control mats, blankets, or nets are recommended to help stabilize steep slopes (generally 3:1 and
steeper) and waterways. Depending on the product, these may be used alone or in conjunction with grass
or straw mulch. Normally, use of these products will be restricted to relatively small areas.
Biodegradable mats made of straw and jute, straw-coconut, coconut fiber, or excelsior can be used instead
of mulch. (See the ECM/TRM BMP for more information.)
Some tackifiers or binders may be used to anchor mulch. Check with the local jurisdiction for allowed
tackifiers. Manufacturer's recommendations should be followed at all times. (See the Soil Binder BMP
for more information on general types of tackifiers.)
Rock can also be used as mulch. It provides protection of exposed soils to wind and water erosion and
allows infiltration of precipitation. An aggregate base course can be spread on disturbed areas for
temporary or permanent stabilization. The rock mulch layer should be thick enough to provide full
coverage of exposed soil on the area it is applied.
Maintenance and Removal
After mulching, the bare ground surface should not be more than 10 percent exposed. Reapply mulch, as
needed, to cover bare areas.
Temporary and Permanent Seeding (TS/PS) EC-2
June 2012 Urban Drainage and Flood Control District TS/PS-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph TS/PS -1. Equipment used to drill seed. Photo courtesy of
Douglas County.
Description
Temporary seeding can be used to
stabilize disturbed areas that will be
inactive for an extended period.
Permanent seeding should be used to
stabilize areas at final grade that will not
be otherwise stabilized. Effective seeding
includes preparation of a seedbed,
selection of an appropriate seed mixture,
proper planting techniques, and protection
of the seeded area with mulch, geotextiles,
or other appropriate measures.
Appropriate Uses
When the soil surface is disturbed and
will remain inactive for an extended
period (typically 30 days or longer),
proactive stabilization measures should be implemented. If the inactive period is short-lived (on the order
of two weeks), techniques such as surface roughening may be appropriate. For longer periods of
inactivity, temporary seeding and mulching can provide effective erosion control. Permanent seeding
should be used on finished areas that have not been otherwise stabilized.
Typically, local governments have their own seed mixes and timelines for seeding. Check jurisdictional
requirements for seeding and temporary stabilization.
Design and Installation
Effective seeding requires proper seedbed preparation, selection of an appropriate seed mixture, use of
appropriate seeding equipment to ensure proper coverage and density, and protection with mulch or fabric
until plants are established.
The USDCM Volume 2 Revegetation Chapter contains detailed seed mix, soil preparations, and seeding
and mulching recommendations that may be referenced to supplement this Fact Sheet.
Drill seeding is the preferred seeding method. Hydroseeding is not recommended except in areas where
steep slopes prevent use of drill seeding equipment, and even in these instances it is preferable to hand
seed and mulch. Some jurisdictions do not allow hydroseeding or hydromulching.
Seedbed Preparation
Prior to seeding, ensure that areas to be revegetated have
soil conditions capable of supporting vegetation. Overlot
grading can result in loss of topsoil, resulting in poor quality
subsoils at the ground surface that have low nutrient value,
little organic matter content, few soil microorganisms,
rooting restrictions, and conditions less conducive to
infiltration of precipitation. As a result, it is typically
necessary to provide stockpiled topsoil, compost, or other
Temporary and Permanent Seeding
Functions
Erosion Control Yes
Sediment Control No
Site/Material Management No
EC-2 Temporary and Permanent Seeding (TS/PS)
TS/PS-2 Urban Drainage and Flood Control District June 2012
Urban Storm Drainage Criteria Manual Volume 3
soil amendments and rototill them into the soil to a depth of 6 inches or more.
Topsoil should be salvaged during grading operations for use and spread on areas to be revegetated later.
Topsoil should be viewed as an important resource to be utilized for vegetation establishment, due to its
water-holding capacity, structure, texture, organic matter content, biological activity, and nutrient content.
The rooting depth of most native grasses in the semi-arid Denver metropolitan area is 6 to 18 inches. At a
minimum, the upper 6 inches of topsoil should be stripped, stockpiled, and ultimately respread across
areas that will be revegetated.
Where topsoil is not available, subsoils should be amended to provide an appropriate plant-growth
medium. Organic matter, such as well digested compost, can be added to improve soil characteristics
conducive to plant growth. Other treatments can be used to adjust soil pH conditions when needed. Soil
testing, which is typically inexpensive, should be completed to determine and optimize the types and
amounts of amendments that are required.
If the disturbed ground surface is compacted, rip or rototill the surface prior to placing topsoil. If adding
compost to the existing soil surface, rototilling is necessary. Surface roughening will assist in placement
of a stable topsoil layer on steeper slopes, and allow infiltration and root penetration to greater depth.
Prior to seeding, the soil surface should be rough and the seedbed should be firm, but neither too loose
nor compacted. The upper layer of soil should be in a condition suitable for seeding at the proper depth
and conducive to plant growth. Seed-to-soil contact is the key to good germination.
Seed Mix for Temporary Vegetation
To provide temporary vegetative cover on disturbed areas which will not be paved, built upon, or fully
landscaped or worked for an extended period (typically 30 days or more), plant an annual grass
appropriate for the time of planting and mulch the planted areas. Annual grasses suitable for the Denver
metropolitan area are listed in Table TS/PS-1. These are to be considered only as general
recommendations when specific design guidance for a particular site is not available. Local governments
typically specify seed mixes appropriate for their jurisdiction.
Seed Mix for Permanent Revegetation
To provide vegetative cover on disturbed areas that have reached final grade, a perennial grass mix should
be established. Permanent seeding should be performed promptly (typically within 14 days) after
reaching final grade. Each site will have different characteristics and a landscape professional or the local
jurisdiction should be contacted to determine the most suitable seed mix for a specific site. In lieu of a
specific recommendation, one of the perennial grass mixes appropriate for site conditions and growth
season listed in Table TS/PS-2 can be used. The pure live seed (PLS) rates of application recommended
in these tables are considered to be absolute minimum rates for seed applied using proper drill-seeding
equipment.
If desired for wildlife habitat or landscape diversity, shrubs such as rubber rabbitbrush (Chrysothamnus
nauseosus), fourwing saltbush (Atriplex canescens) and skunkbrush sumac (Rhus trilobata) could be
added to the upland seedmixes at 0.25, 0.5 and 1 pound PLS/acre, respectively. In riparian zones,
planting root stock of such species as American plum (Prunus americana), woods rose (Rosa woodsii),
plains cottonwood (Populus sargentii), and willow (Populus spp.) may be considered. On non-topsoiled
upland sites, a legume such as Ladak alfalfa at 1 pound PLS/acre can be included as a source of nitrogen
for perennial grasses.
Temporary and Permanent Seeding (TS/PS) EC-2
June 2012 Urban Drainage and Flood Control District TS/PS-3
Urban Storm Drainage Criteria Manual Volume 3
Seeding dates for the highest success probability of perennial species along the Front Range are generally
in the spring from April through early May and in the fall after the first of September until the ground
freezes. If the area is irrigated, seeding may occur in summer months, as well. See Table TS/PS-3 for
appropriate seeding dates.
Table TS/PS-1. Minimum Drill Seeding Rates for Various Temporary Annual Grasses
Speciesa
(Common name)
Growth
Seasonb
Pounds of
Pure Live Seed
(PLS)/acrec
Planting
Depth
(inches)
1. Oats Cool 35 - 50 1 - 2
2. Spring wheat Cool 25 - 35 1 - 2
3. Spring barley Cool 25 - 35 1 - 2
4. Annual ryegrass Cool 10 - 15 ½
5. Millet Warm 3 - 15 ½ - ¾
6. Sudangrass Warm 5–10 ½ - ¾
7. Sorghum Warm 5–10 ½ - ¾
8. Winter wheat Cool 20–35 1 - 2
9. Winter barley Cool 20–35 1 - 2
10. Winter rye Cool 20–35 1 - 2
11. Triticale Cool 25–40 1 - 2
a Successful seeding of annual grass resulting in adequate plant growth will
usually produce enough dead-plant residue to provide protection from
wind and water erosion for an additional year. This assumes that the cover
is not disturbed or mowed closer than 8 inches.
Hydraulic seeding may be substituted for drilling only where slopes are
steeper than 3:1 or where access limitations exist. When hydraulic
seeding is used, hydraulic mulching should be applied as a separate
operation, when practical, to prevent the seeds from being encapsulated in
the mulch.
b See Table TS/PS-3 for seeding dates. Irrigation, if consistently applied,
may extend the use of cool season species during the summer months.
c Seeding rates should be doubled if seed is broadcast, or increased by 50
percent if done using a Brillion Drill or by hydraulic seeding.
EC-2 Temporary and Permanent Seeding (TS/PS)
TS/PS-4 Urban Drainage and Flood Control District June 2012
Urban Storm Drainage Criteria Manual Volume 3
Table TS/PS-2. Minimum Drill Seeding Rates for Perennial Grasses
Common
a
Name
Botanical
Name
Growth
Seasonb
Growth
Form
Seeds/
Pound
Pounds of
PLS/acre
Alakali Soil Seed Mix
Alkali sacaton Sporobolus airoides Cool Bunch 1,750,000 0.25
Basin wildrye Elymus cinereus Cool Bunch 165,000 2.5
Sodar streambank wheatgrass Agropyron riparium 'Sodar' Cool Sod 170,000 2.5
Jose tall wheatgrass Agropyron elongatum 'Jose' Cool Bunch 79,000 7.0
Arriba western wheatgrass Agropyron smithii 'Arriba' Cool Sod 110,000 5.5
Total 17.75
Fertile Loamy Soil Seed Mix
Ephriam crested wheatgrass Agropyron cristatum
'Ephriam' Cool Sod 175,000 2.0
Dural hard fescue Festuca ovina 'duriuscula' Cool Bunch 565,000 1.0
Lincoln smooth brome Bromus inermis leyss
'Lincoln' Cool Sod 130,000 3.0
Sodar streambank wheatgrass Agropyron riparium 'Sodar' Cool Sod 170,000 2.5
Arriba western wheatgrass Agropyron smithii 'Arriba' Cool Sod 110,000 7.0
Total 15.5
High Water Table Soil Seed Mix
Meadow foxtail Alopecurus pratensis Cool Sod 900,000 0.5
Redtop Agrostis alba Warm Open sod 5,000,000 0.25
Reed canarygrass Phalaris arundinacea Cool Sod 68,000 0.5
Lincoln smooth brome Bromus inermis leyss
'Lincoln' Cool Sod 130,000 3.0
Pathfinder switchgrass Panicum virgatum
'Pathfinder' Warm Sod 389,000 1.0
Alkar tall wheatgrass Agropyron elongatum
'Alkar' Cool Bunch 79,000 5.5
Total 10.75
Transition Turf Seed Mixc
Ruebens Canadian bluegrass Poa compressa 'Ruebens' Cool Sod 2,500,000 0.5
Dural hard fescue Festuca ovina 'duriuscula' Cool Bunch 565,000 1.0
Citation perennial ryegrass Lolium perenne 'Citation' Cool Sod 247,000 3.0
Lincoln smooth brome Bromus inermis leyss
'Lincoln' Cool Sod 130,000 3.0
Total 7.5
Temporary and Permanent Seeding (TS/PS) EC-2
June 2012 Urban Drainage and Flood Control District TS/PS-5
Urban Storm Drainage Criteria Manual Volume 3
Table TS/PS-2. Minimum Drill Seeding Rates for Perennial Grasses (cont.)
Common
Name
Botanical
Name
Growth
Seasonb
Growth
Form
Seeds/
Pound
Pounds of
PLS/acre
Sandy Soil Seed Mix
Blue grama Bouteloua gracilis Warm Sod-forming
bunchgrass 825,000 0.5
Camper little bluestem Schizachyrium scoparium
'Camper' Warm Bunch 240,000 1.0
Prairie sandreed Calamovilfa longifolia Warm Open sod 274,000 1.0
Sand dropseed Sporobolus cryptandrus Cool Bunch 5,298,000 0.25
Vaughn sideoats grama Bouteloua curtipendula
'Vaughn' Warm Sod 191,000 2.0
Arriba western wheatgrass Agropyron smithii 'Arriba' Cool Sod 110,000 5.5
Total 10.25
Heavy Clay, Rocky Foothill Seed Mix
Ephriam crested wheatgrass
d
Agropyron cristatum
'Ephriam' Cool Sod 175,000 1.5
Oahe Intermediate wheatgrass Agropyron intermedium
'Oahe' Cool Sod 115,000 5.5
Vaughn sideoats grama
e
Bouteloua curtipendula
'Vaughn' Warm Sod 191,000 2.0
Lincoln smooth brome Bromus inermis leyss
'Lincoln' Cool Sod 130,000 3.0
Arriba western wheatgrass Agropyron smithii 'Arriba' Cool Sod 110,000 5.5
Total 17.5
a All of the above seeding mixes and rates are based on drill seeding followed by crimped straw mulch. These rates should be
doubled if seed is broadcast and should be increased by 50 percent if the seeding is done using a Brillion Drill or is applied
through hydraulic seeding. Hydraulic seeding may be substituted for drilling only where slopes are steeper than 3:1. If
hydraulic seeding is used, hydraulic mulching should be done as a separate operation.
b
See Table TS/PS-3 for seeding dates.
c
If site is to be irrigated, the transition turf seed rates should be doubled.
d
Crested wheatgrass should not be used on slopes steeper than 6H to 1V.
e
Can substitute 0.5 lbs PLS of blue grama for the 2.0 lbs PLS of Vaughn sideoats grama.
EC-2 Temporary and Permanent Seeding (TS/PS)
TS/PS-6 Urban Drainage and Flood Control District June 2012
Urban Storm Drainage Criteria Manual Volume 3
Table TS/PS-3. Seeding Dates for Annual and Perennial Grasses
Annual Grasses
(Numbers in table reference
species in Table TS/PS-1)
Perennial Grasses
Seeding Dates Warm Cool Warm Cool
January 1–March 15
March 16–April 30 4 1,2,3
May 1–May 15 4
May 16–June 30 4,5,6,7
July 1–July 15 5,6,7
July 16–August 31
September 1–September 30 8,9,10,11
October 1–December 31
Mulch
Cover seeded areas with mulch or an appropriate rolled erosion control product to promote establishment
of vegetation. Anchor mulch by crimping, netting or use of a non-toxic tackifier. See the Mulching BMP
Fact Sheet for additional guidance.
Maintenance and Removal
Monitor and observe seeded areas to identify areas of poor growth or areas that fail to germinate. Reseed
and mulch these areas, as needed.
An area that has been permanently seeded should have a good stand of vegetation within one growing
season if irrigated and within three growing seasons without irrigation in Colorado. Reseed portions of
the site that fail to germinate or remain bare after the first growing season.
Seeded areas may require irrigation, particularly during extended dry periods. Targeted weed control may
also be necessary.
Protect seeded areas from construction equipment and vehicle access.
Surface Roughening (SR) EC-1
November 2010 Urban Drainage and Flood Control District SR-1
Urban Storm Drainage Criteria Manual Volume 3
Photograph SR-1. Surface roughening via imprinting for temporary
stabilization.
Description
Surface roughening is an erosion control
practice that involves tracking,
scarifying, imprinting, or tilling a
disturbed area to provide temporary
stabilization of disturbed areas. Surface
roughening creates variations in the soil
surface that help to minimize wind and
water erosion. Depending on the
technique used, surface roughening may
also help establish conditions favorable
to establishment of vegetation.
Appropriate Uses
Surface roughening can be used to
provide temporary stabilization of
disturbed areas, such as when
revegetation cannot be immediately established due to seasonal planting limitations. Surface roughening
is not a stand-alone BMP, and should be used in conjunction with other erosion and sediment controls.
Surface roughening is often implemented in conjunction with grading and is typically performed using
heavy construction equipment to track the surface. Be aware that tracking with heavy equipment will also
compact soils, which is not desirable in areas that will be revegetated. Scarifying, tilling, or ripping are
better surface roughening techniques in locations where revegetation is planned. Roughening is not
effective in very sandy soils and cannot be effectively performed in rocky soil.
Design and Installation
Typical design details for surfacing roughening on steep and mild slopes are provided in Details SR-1 and
SR-2, respectively.
Surface roughening should be performed either after final grading or to temporarily stabilize an area
during active construction that may be inactive for a short time period. Surface roughening should create
depressions 2 to 6 inches deep and approximately 6 inches apart. The surface of exposed soil can be
roughened by a number of techniques and equipment. Horizontal grooves (running parallel to the
contours of the land) can be made using tracks from equipment treads, stair-step grading, ripping, or
tilling.
Fill slopes can be constructed with a roughened surface. Cut slopes that have been smooth graded can be
roughened as a subsequent operation. Roughening should follow along the contours of the slope. The
tracks left by truck mounted equipment working perpendicular
to the contour can leave acceptable horizontal depressions;
however, the equipment will also compact the soil.
Surface Roughening
Functions
Erosion Control Yes
Sediment Control No
Site/Material Management No
EC-1 Surface Roughening (SR)
SR-2 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Maintenance and Removal
Care should be taken not to drive vehicles or equipment over areas that have been surface roughened.
Tire tracks will smooth the roughened surface and may cause runoff to collect into rills and gullies.
Because surface roughening is only a temporary control, additional treatments may be necessary to
maintain the soil surface in a roughened condition.
Areas should be inspected for signs of erosion. Surface roughening is a temporary measure, and will not
provide long-term erosion control.
Surface Roughening (SR) EC-1
November 2010 Urban Drainage and Flood Control District SR-3
Urban Storm Drainage Criteria Manual Volume 3
EC-1 Surface Roughening (SR)
SR-4 Urban Drainage and Flood Control District November 2010
Urban Storm Drainage Criteria Manual Volume 3
Appendix F - Colorado Discharge Permit System (CDPS) Application
For Agency Use Only
Permit Number Assigned
COR03-__________________________
Date Received ______/______/______
MM DD YYYY
COLORADO DISCHARGE PERMIT SYSTEM (CDPS)
STORMWATER DISCHARGE ASSOCIATED WITH CONSTRUCTION ACTIVITIES APPLICATION
PHOTO COPIES, FAXED COPIES, PDF COPIES OR EMAILS WILL NOT BE ACCEPTED.
Please print or type. Original signatures are required.
All items must be completed accurately and in their entirety for the application to be deemed complete. Incomplete applications will not be processed until all
information is received which will ultimately delay the issuance of a permit. If more space is required to answer any question, please attach additional sheets to the
application form. Applications must be submitted by mail or hand delivered to:
Colorado Department of Public Health and Environment
Water Quality Control Division
4300 Cherry Creek Drive South
WQCD-WQPS-B2
Denver, CO 80246-1530
Any additional information that you would like the Division to consider in developing the permit should be provided with the application. Examples include effluent data
and/or modeling and planned pollutant removal strategies.
Responsible Person (Title):
* PERMITTEE (if more than one please add additional pages)
COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT
Dedicated to protecting and improving the health and environment of the people of Colorado
Water Quality Control Division
4300 Cherry Creek Drive South
WQCD-WQPS-B2
Denver, CO 80246-1530
(303) 692– 3500 www.coloradowaterpermits.com
PERMIT INFORMATION
Reason for Application: NEW CERT RENEW CERT EXISTING CERT#
Applicant is: Property Owner Contractor/Operator
A. CONTACT INFORMATION—NOT ALL CONTACTS MAY APPLY *indicates required
* ORGANIZATION FORMAL NAME:
1) * PERMITTEE CONTACT the person authorized to sign and certify the permit application.
This person receives all permit correspondences and is the person responsible for ensuring compliance with the permit.
Currently Held By (Person): FirstName: LastName:
Telephone: Email Address:
Organization:
Mailing Address:
City: State: Zip Code:
This form must be signed by the Permittee (listed in item 1) to be considered complete.
Per Regulation 61 In all cases, it shall be signed as follows:
In the case of corporations, by a responsible corporate officer. For the purposes of this section, the responsible corporate officer is
responsible for the overall operation of the facility from which the discharge described in the application originates.
In the case of a partnership, by a general partner.
In the case of a sole proprietorship, by the proprietor.
In the case of a municipal, state, or other public facility, by either a principal executive officer or ranking elected official.
SW Construction Application for: page 1 of 5
HOW TO COMPLETE THIS APPLICATION
1. Online via web browser. You must use Internet Explorer (version 8 and above). All other browsers disable the electronic submission features.
OR
2. Download and save this form to your computer. Then open Adobe Reader (or Acrobat), select File, then Open and navigate to where the form is saved. This is the best
option if using a Mac computer (Do not use the Mac Preview program).
Responsible Person (Title):
2) DMR COGNIZANT OFFICIAL (i.e. authorized agent) the person or position authorized to sign and certify reports required by the Division
including Discharge Monitoring Reports *DMR’s, Annual Reports, Compliance Schedule submittals, and other information requested by the
Division. The Division will transmit pre-printed reports (ie. DMR’s) to this person. If more than one, please add additional pages.
Currently Held By (Person): FirstName: LastName:
Telephone: Email Address:
Organization:
Mailing Address:
City: State: Zip Code:
Same as 1) Permittee
Per Regulation 61 : All reports required by permits, and other information requested by the Division shall be signed by the permittee or by a duly
authorized representative of that person. A person is a duly authorized representative only if:
i. The authorization is made in writing by the permittee.
ii. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or
activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an
individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus
be either a named individual or any individual occupying a named position); and
iii. The written authorization is submitted to the Division.
Responsible Person (Title):
Currently Held By (Person): FirstName: LastName:
Telephone: Email Address:
Organization:
Mailing Address:
City: State: Zip Code:
Same as 1) Permittee
4) *BILLING CONTACT if different than the permittee.
3) *SITE CONTACT local contact for questions relating to the facility & discharge authorized by this permit
Responsible Person (Title):
Currently Held By (Person): FirstName: LastName:
Telephone: Email Address:
Organization:
Mailing Address:
City: State: Zip Code:
Same as 1) Permittee
SW Construction Application for: page 2 of 5
B) PERMITTED PROJECT/FACILITY INFORMATION
5) OTHER CONTACT TYPES (check below) Add pages if necessary:
LastName:
Email Address:
Responsible Person (Title):
Currently Held By (Person):
Telephone:
Organization:
Mailing Address:
City: State: Zip Code:
001A Latitude
Decimal Degrees
Pretreatment Coordinator
Environmental Contact
Biosolids Responsible Party
Other:
Property Owner
Inspection Facility Contact
Consultant
Compliance Contact
Stormwater MS4 Responsible Person
Stormwater Authorized Representative
Project/Facility Name
Street Address or Cross Streets
(e.g., “S. of Park St. between 5th Ave. and 10th Ave.”, or “W. side of C.R. 21, 3.25 miles N. of Hwy 10”; A street name without an address,
intersection, mile marker, or other identifying information describing the location of the project is not adequate. For linear projects, the route of
the project should be described as best as possible with the location more accurately indicated by a map.)
Facility Latitude/Longitude - (approximate center of site to nearest 15 seconds using one of the following formats)
. 001A Longitude
Degrees (to 3 decimal places)
.
Degrees (to 3 decimal places)
(e.g., 39.703°, 104.933°)
001A Latitude o 001A Longitude
Degrees
‘
Minutes Seconds
“ o
Degrees
‘
Minutes Seconds
“ e.g., 39°46'11"N, 104°53'11"W
Degrees, Minutes, Seconds
OR
For the approximate center point of the property, to the nearest 15 seconds. The latitude and longitude must be provided as either degrees,
minutes, and seconds, or in decimal degrees with three decimal places. This information may be obtained from a variety of sources, including:
Surveyors or engineers for the project should have, or be able to calculate, this information.
EPA maintains a web-based siting tool as part of their Toxic Release Inventory program that uses interactive maps and aerial pho-
tography to help users get latitude and longitude. The siting tool can be accessed at www.epa.gov/tri/report/siting_tool/index.htm
U.S. Geological Survey topographical map(s), available at area map stores.
Using a Global Positioning System (GPS) unit to obtain a direct reading.
Note: the latitude/longitude required above is not the directional degrees, minutes, and seconds provided on a site legal description to define
property boundaries.
C) MAP (Attachment) If no map is submitted, the permit will not be issued Facility Information
Map: Attach a map that indicates the site location and that CLEARLY shows the boundaries of the area that will be disturbed. Maps must be no
larger than 11x17 inches.
D) LEGAL DESCRIPTION
Legal description: If subdivided, provide the legal description below, or indicate that it is not applicable (do not supply Township/Range/Section
or metes and bounds description of site)
Subdivision(s): Lot(s): Block(s)
Total area of project site (Acres) Area of project site to undergo disturbance (Acres)
Note: aside from clearing, grading and excavation activities, disturbed areas also include areas receiving overburden (e.g., stockpiles), demolition areas,
and areas with heavy equipment/vehicle traffic and storage that disturb existing vegetative cover
E) AREA OF CONSTRUCTION SITE
Total disturbed area of Larger Common Plan of Development or Sale. If applicable:
SW Construction Application for: page 4 of 5
Single Family Residential Development
Other—Description:
(i.e., total, including all phases, filings, lots, and infrastructure not covered by this application)
Provide both the total area of the construction site, and the area that will undergo disturbance, in acres. Note: aside from clearing, grading and excavation
activities, disturbed areas also include areas receiving overburden (e.g., stockpiles), demolition areas, and areas with heavy equipment/vehicle traffic and storage
that disturb existing vegetative cover (see construction activity description under the APPLICABILITY section on page 1). If the project is part of a larger common
plan of development or sale (see the definition under the APPLICABILITY section on page 1), the disturbed area of the total plan must also be included.
F) NATURE OF CONSTRUCTION ACTIVITY
Check the appropriate box(s) or provide a brief description that indicates the general nature of the construction activities. (The full description of activities must be
included in the Stormwater Management Plan.)
Multi-Family Residential Development
Commercial Development
Oil and Gas Production and/or Exploration (including pad sites and associated infrastructure)
Highway/Road Development (not including roadways associated with commercial or residential development)
G) ANTICIPATED CONSTRUCTION SCHEDULE
Construction Start Date: Final Stabilization Date:
Construction Start Date - This is the day you expect to begin ground disturbing activities, including grubbing, stockpiling, excavating, demolition,
and grading activities.
Final Stabilization Date - in terms of permit coverage, this is when the site is finally stabilized. This means that all ground surface disturbing
activities at the site have been completed, and all disturbed areas have been either built on, paved, or a uniform vegetative cover has been
established with an individual plant density of at least 70 percent of pre-disturbance levels. Permit coverage must be maintained until the site is
finally stabilized. Even if you are only doing one part of the project, the estimated final stabilization date must be for the overall project.
If permit coverage is still required once your part is completed, the permit certification may be transferred or reassigned to a new responsible
entity(s).
H) RECEIVING WATERS (If discharge is to a ditch or storm sewer, include the name of the ultimate receiving waters)
Immediate Receiving Water(s):
Ultimate Receiving Water(s):
Identify the receiving water of the stormwater from your site. Receiving waters are any waters of the State of Colorado. This includes all water courses, even if they
are usually dry. If stormwater from the construction site enters a ditch or storm sewer system, identify that system and indicate the ultimate receiving water for the
ditch or storm sewer. Note: a stormwater discharge permit does not allow a discharge into a ditch or storm sewer system without the approval of the owner/
operator of that system.
I) SIGNATURE PAGE
STORMWATER MANAGEMENT PLAN CERTIFICATION
Electronic Signature Ink Signature
1. You may print and sign this document and mail the hard copy to the State along with required documents.
OR
2. Electronic Submission Signature
You may choose to submit your application electronically, along with required attachments. To do so, click the SUBMIT button below which will direct you, via
e-mail , to sign the document electronically using the DocuSign Electronic Signature process. Once complete, you will receive, again via e-mail, an electronically
stamped Adobe pdf of this application. Print the signature page from the electronically stamped pdf, sign it and mail it to the WQCD Permits Section to complete
the application process (address is on page 1 of the application).
The Division encourages use of the electronic submission of the application and electronic signature. This method meets signature requirements as
required by the State of Colorado.
The ink signed copy of the electronically stamped pdf signature page is also required. This requirement meets Federal EPA Requirements.
Processing of the application will begin with the receipt of the valid electronic signature.
“I certify under penalty of law that a complete Stormwater Management Plan, as described in Appendix B of this application, has been prepared for my activity.
Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the Stormwater
Management Plan is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for falsely certifying
the completion of said SWMP, including the possibility of fine and imprisonment for knowing violations."
Date:
Signature of Legally Responsible Person or Authorized Agent (submission must include original signature)
Name (printed) Title
"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 or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted 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 knowing violations."
“I understand that submittal of this application is for coverage under the State of Colorado General Permit for Stormwater Discharges Associated with Construction
Activity for the entirety of the construction site/project described and applied for, until such time as the application is amended or the certification is
transferred, inactivated, or expired.” [Reg 61.4(1)(h)]
DO NOT INCLUDE A COPY OF THE STORMWATER MANAGEMENT PLAN
DO NOT INCLUDE PAYMENT—AN INVOICE WILL BE SENT AFTER THE CERTIFICATION IS ISSUED.
This form must be signed by the Permittee to be considered complete. Per Regulation 61 In all cases, it shall be signed as follows:
a) In the case of corporations, by a responsible corporate officer. For the purposes of this section, the responsible corporate officer is responsible for the over
all operation of the facility from which the discharge described in the application originates.
b) In the case of a partnership, by a general partner.
c) In the case of a sole proprietorship, by the proprietor.
d) In the case of a municipal, state, or other public facility, by either a principal executive officer or ranking elected official
SW Construction Application for: page 5 of 5
3rd Party Preparer: If this form was prepared by an authorized agent on behalf of the Permittee, please complete the fields below.
Preparer Name (printed) Email Address
For Docusign
Appendix G - Sample Inspection Log
Appendix H – Site Map and Design Drawings
Erosion Control Plans | EC01 and EC02
Phasing Plan | PH01 and PH02
Overall Grading | OG02
Landscape Schedule and Notes | LP100
Overall Landscape Plan | LP103
BARNSTORMER STREET
BIPLANE STREET
COLEMAN STREET
SUPERCUB LANE
CONQUEST STREET
VICOT WAY
NAVION LANE
VICOT WAY
YEAGER STREET
MARQUISE STREET
FAIRCHILD STREET
QUINBY STREET
FAIRCHILD STREET
SYKESDRIVE
BARNSTORMER STREET
BIPLANE STREET
COLEMAN STREET
VICOT WAY
CONQUEST STREET
CONQU
EST STREET
CONQUESTWAY
ALLEYA
A
LLEYA
ALLEY A
ALLEYA
ALLEYA
ALLEYA
MARQUISE
STREET
ZEPPELIN WAY
SYKES DRIV
E
PRIVATE DRIVE C
SF SF SF SF SF SF
SF SF SF
SF SF SF SF SF SF SF
SF SF SF
SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF
SF SF SF SF SF SF SF SF
SF SF SF SF SF SF SF SF SF SF SF SF
SF SF SF SF SF SF
SF SF SF
CWA
IP
IP
IP
IP
IP
IP
IP
IP
IP
IP IP
IP
IP
IP
IP
IP
SYKESDRIVE
COMET STREET (B)
RELIANT STREET
CRUSADER STREET (B)
VICOT WAY
PRIVATE DRIVEAA
ZEPPELIN WAY
PRIVATE DRIVE TIGERCATW
AY
DASSAULT STREET
DELOZIER ROAD
VICOT WAY
QUINBY STREET
CRUSADER STREET (A)
ZEPPELIN WAY
ALLEYB
COMET STREET (A)
PRIVATE DRIV
E C
PRIVATE DRIVED
PRIVATE DRIVEE
PRI
VATE DRIVE C
PRIVATE DRIVE TIGERCATWAY
SF SF
SF SF SF SF SF SF SF SF SF SF SF SF SF SF
SF SF SF SF SF SF SF SF SF SF SF
SF SF SF
SF SF SF SF
SF SF SF
SF SF SF SF SF
SF SF SF SF SF SF
SF SF SF
SF SF SF SF SF SF SF SF SF SF SF SF SF SF
RP
RP
IP
IP
IP
IP
IP
IP
IP
IP
IP
IP
IP
IP
IP
IP IP
IP
IP
IP
IP
IP
IP
IP
IP
IP
IP
8''SS
8''SS
8''SS 8''SS
8''SS 8''S
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8''SS
8''SS 8''SS 8''SS
18''SS 18''SS
18'
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18''SS
8''SS 8''SS
8''SS
8''SS
8''SS
8''SS 8''SS
8''SS 8''SS 8''SS 8''SS 8''SS 8''SS 8''SS
8''SS 8''SS 8''SS 8''SS
8''SS 8''SS 8''SS 8''SS
18''SS 18''SS
8''SS 8''SS 8''SS 8''SS 8''SS 8''SS 8''SS
8''SS
8''SS
8''SS 8''SS 8''SS 8''SS 8''SS 8''SS
12''W 12''W 12''W 12''W 12''W 12''W
8''SS
8''SS 8
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18''SS 18''SS 18''SS 18''SS 18''SS 18''SS 18''SS 18''SS
8''W 8''W
8''
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8''W
8''W
8''W
8 ''W
12''W 12''W 12''W 12''W 12''W
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8''
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8''W
8 ''W
8''W
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8''W 8''W
8''W
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12''W 12''W 12''W
12''W 12''W 12''W 12''W 12''W 12''W 12''W 12''W 12''W 12''W 12''W 12''W 12''W 12''W
8''W
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1
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8''W 8''W 8''W 8''W 8''W 8''W 8''W 8''W
8''SS 8''SS
8''W 8''W
8''SS 8''SS 8''SS 8''SS
8''SS 8''S
S
8''SS 8''SS 8''SS 8''SS 8''SS 8''SS
18''SS
18''SS
8''W 8''W
8
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8''W
8''W
8''W
8''W
8''W
8''W 8''W
8''W 8''W 8''W 8''W 8
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8''W 8''W 8''W 8''W 8''W 8''W 8''W 8''W
8''W 8''W 8''W 8''W 8''W 8''W 8''W 8''W
8''SS
8''W 8''W 8''W
18''SS18''SS 18''SS
8''SS 8''SS 8''SS 8''SS 8''SS
12''SS 12''SS
12''SS
12''SS 12''SS
12''SS 12''SS
12''SS 12''SS
21''SS 21''SS 21''SS
12''W 12''W 12''W 12''W 12''W 12''W
12''W 12''W 12''W
21''SS 21''SS 21''SS 21''SS 21''SS 21''SS
12''SS 12
''SS 12''SS
21''SS 21''SS
8''SS8''SS 8''SS 8''SS 8''SS 8''SS
8''SS 8''SS 8''SS
8''SS 8''SS 8''SS 8''SS 8''SS 8''SS 8''SS 8''SS 8''SS
21''SS
8''W
16''SS 16''SS 16''SS 16''SS 16''SS 16''SS
16''SS 16''SS 16''SS 16''SS 16''SS 16''SS
8''SS 8''SS
8''SS
8''SS 8''SS 8''SS
8''S
S 8''SS
BARNSTORMER STREET
BIPLANE STREET
COLEMAN STREET
SUPERCUBLANE
CONQUEST STREET
SYKES DRIVE
COMET STREET(B)
RELIANT STREET
CRUSADER STREET (B)
VICOT W AY
PR IVATE DRIVEAA
ZEPPELIN WAY
PR IVATE DRIV
E TIGERCATWAY
NAVION LANE
VICOT WAY
YEAGER STREET
MARQUISE STREET
FAIRCHILD STREET
QUINBY STREET
FAIRCHILD STREET
DASSAULT STREET
DELOZIER ROAD
SYKES DRIVE
BARNSTORMER STREET
BIPLANE STREET
COLEMAN STREET
VICOT WAY
VICOT WAY
CONQUEST STREET
C ONQU
EST STREET
CONQUE
ST WAY
ALLEYA
ALLEYA
ALLEYA
ALLEY
A
ALLEYA
ALLEYA
QUINBY STREET
MARQUISE STREE
T
CRUSADER STREET(A)
ZEPPELIN WAY
ZEPPELIN WAY
S
YK ES DRIVE
AL L EY B
COMET STREET(
A)
PR IVATE DRIVEC
PR I
VATE DRIVE D
PRIVATE DRIVE E
PR IV
ATE DRIVEC
PRIVATE DRIVE TIGERCAT W
AY
4950
4955
4947
4948
4949
4951
4952
4953
4954
4956
4930
4935
4940
4945
4950
4929
4931
4932
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4951
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4950
4955
4946
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4935
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4932
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4960
4965
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4957
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4959
4961
4962
4963
4964
4964
4964
4964
4964
4966
4967
4968
4940
4945
4950
4955
4941
4942
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4947
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4951
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4956
4957
4958
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4945
42
43
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4940
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39
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42
27
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31
4935
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41 41
42 42
41 42 42 42
43 44
4945
41 42 43 43
43 44 46
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47 48 49 51 52
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47 48
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48 49 51 52
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42
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52 52 51 51 52
53 54
4950
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49 49 51
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51 51
47
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46
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48 48 49 51 52 53
46
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48
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4955
51
52
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4950
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4950
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8''SS
8''SS 8''SS 8''SS
8''W 8''W 8''W
8''SS
8''SS 8''SS
8''SS
18''SS
8''SS
8''SS
8''SS
8''SS
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12''W 12''W
18''SS
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12''W 12''W
8''W
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12''W
12''W
8''W
8''W 8''W 8''W 8''W
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8''W 8''W 8''W
18''SS 18''SS
8''SS
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8''SS 8''SS
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21''SS 21''SS 21''SS
12''SS
21''SS
8''SS
8''SS
8''SS
8''SS 8''SS 8''SS
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16''SS 16''SS 16''SS 16''SS
8''SS
8''SS
8''W
8''W
8''W
S S S S S S
S S S S S
S S S S
S S S S S S
S S S S S S
S S S S
S S S S S S
S S S S S
S S S S S
S S S S S S S S
S S S S S S
S S
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S S S S S S S
S S S S S
S S S S
S S S S S S
S S S S S S
S S S S
S S S S S S S S
S S S S S S S
S S S S S
S S S S S S S
S S S S S S
S S S
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S S S S S S S S
S S S S S S S
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S S S S S
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S S S S S S S
S S S S S
S S
S S S S S S S S S S
S S S S S S S S
S S S
S S S S S
S
S
S
S
S
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S S S S S S S S S S
S S S S S S S
S S S S S
S S S S S S S S
S S S S S S S S S
S S S S S S S
S S S S
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12''W
8''SS
8''W 8''W
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SHEET LP401
SHEET LP403 SHEET LP404
SHEET LP403 SHEET LP404
SHEET LP405 SHEET LP406
SHEET LP402
SHEET LP401
SHEET LP404
SHEET LP403
SHEET LP406
SHEET LP405
SHEET LP402
LOT 15
LOT 14
LOT 13
LOT 12
LOT 21
LOT 20
LOT 19
LOT 18
LOT 15
LOT 14
LOT 13
LOT 12
LOT 11
LOT 22
LOT 23
LOT 24
LOT 9
LOT 10
LOT 11
LOT 10
LOT 9
LOT 8
LOT 7
LOT 35
LOT 34
LOT 33
LOT 32
LOT 31
LOT 30
LOT 29
LOT 28
LOT 27
LOT 26
LOT 25
LOT 24
LOT 17
LOT 18
LOT 19
LOT 20
LOT 23
LOT 22
LOT 21
LOT 36
LOT 37
LOT 6
LOT 5
LOT 27
LOT 6
LOT 12
LOT 11
LOT 24
LOT 25
LOT 23
LOT 13
LOT 12
LOT 11
LOT 23
LOT 24
LOT 22
LOT 21
LOT 25
LOT 26
LOT 27
LOT 28
LOT 29
LOT 30
LOT 31
LOT 4
LOT 3
LOT 5
LOT 6
LOT 7
LOT 8
LOT 9
LOT 30
LOT 29
LOT 28
LOT 27
LOT 7
LOT 16
LOT 17
LOT 16
LOT 8
LOT 7
LOT 26
LOT 25
LOT 38
LOT 39
LOT 40
LOT 4
LOT 3
LOT 2
LOT 1
LOT 28
LOT 29
LOT 30
LOT 31
LOT 32
LOT 1
LOT 2
LOT 3
LOT 4
LOT 5
LOT 20
LOT 19
LOT 18
LOT 17
LOT 14
LOT 15
LOT 16
LOT 22
LOT 21
LOT 20
LOT 19
LOT 18
LOT 17
LOT 16
LOT 15
LOT 14
LOT 13
LOT 26
LOT 10
LOT 9
LOT 8
LOT 6
LOT 5
LOT 4
LOT 3
LOT 2
LOT 1
LOT 34
LOT 33
LOT 32
LOT 31
LOT 10
LOT 2
LOT 1
LOT 34
LOT 33
LOT 32
LOT 12
LOT 11
LOT 10
LOT 9
LOT 8
LOT 7
LOT 5 LOT 6
LOT 4
LOT 1
LOT 3
LOT 2
LOT 15
LOT 14
LOT 13
LOT 12
LOT 11
LOT 2
LOT 3
LOT 4
LOT 5
LOT 6
LOT 7
LOT 1
LOT 8
LOT 9
LOT 10
LOT 1
LOT 2.
LOT 16 LOT 1
LOT 15
LOT 3 LOT 14
LOT 4 LOT 13
LOT 5 LOT 12
LOT 6 LOT 11
LOT 7 LOT 10
LOT 7
LOT 6 LOT 13
LOT 5
LOT 14
LOT 4 LOT 15
LOT 3 LOT 16
LOT 2 LOT 17
LOT 18
LOT 8 LOT 9
LOT 8 LOT 11
LOT 12
LOT 10
LOT 9.
LOT 2 LOT 3 LOT 4
LOT 5 LOT 6
LOT 13 LOT 12 LOT 11 LOT 10
LOT 1
LOT 14
LOT 7
LOT 9 LOT 8
LOT 3 LOT 4 LOT 5
LOT 12 LOT 11 LOT 10
LOT 1 LOT 2
LOT 14 LOT 13
LOT 6 LOT 7
LOT 9 LOT 8
LOT 1
LOT 2
LOT 3 LOT 4
LOT 5
LOT 6
LOT 7
LOT 8
LOT 9
LOT 10
LOT 11
LOT 12
LOT 13
LOT 1
LOT 2
LOT 3
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LOT 21
LOT 2 LOT 3 LOT 4
LOT 7 LOT 6 LOT 5
LOT 1 LOT 2
LOT 3 LOT 4
LOT 5
LOT 29 LOT 28 LOT 27
LOT 31 LOT 30 LOT 25
LOT 7 LOT 8 LOT 9
LOT 24 LOT 23
LOT 6
LOT 26
LOT 10 LOT 11 LOT 12 LOT 13
LOT 1
LOT 8
LOT 14
LOT 19
LOT 22 LOT 21 LOT 20
LOT 18
LOT 17
LOT 16
LOT 15
LOT 2 LOT 3 LOT 4
LOT 6 LOT 5
LOT 7
LOT 1 LOT 2 LOT 3
LOT 4 LOT 5 LOT 6 LOT 7
LOT 19 LOT 18 LOT 17 LOT 16
LOT 22 LOT 21 LOT 20
LOT 15
LOT 14 LOT 13
LOT 1 LOT 8 LOT 9 LOT 10
LOT 8
LOT 11
LOT 12
LOT 1 LOT 2 LOT 3 LOT 4 LOT 5 LOT 6
LOT 9 LOT 8 LOT 7
LOT 11 LOT 10
LOT 12
LOT 3
LOT 2
LOT 4
LOT 5
LOT 6
LOT 7
LOT 8
LOT 1
LOT 3 LOT 14
LOT 4
LOT 5
LOT 6
LOT 13
LOT 12
LOT 11
LOT 7 LOT 10
LOT 8 LOT 9
LOT 1 LOT 16
LOT 2 LOT 15
LOT 2 LOT 3 LOT 4
LOT 5 LOT 6 LOT 7
LOT 12 LOT 11 LOT 10
LOT 15 LOT 14 LOT 13
LOT 8
LOT 9 LOT 16
LOT 1 LOT 2 LOT 3
LOT 4 LOT 5 LOT 6 LOT 7
LOT 13 LOT 12 LOT 11 LOT 10
LOT 15 LOT 14
LOT 2 LOT 3 LOT 4
LOT 5 LOT 6 LOT 7
LOT 8 LOT 6 LOT 7
LOT 1 LOT 2 LOT 3 LOT 4 LOT 5
LOT 1
LOT 1
LOT 9
LOT 8
LOT 8
LOT 16
LOT 2 LOT 3 LOT 4
LOT 5 LOT 6 LOT 7
LOT 14 LOT 13 LOT 12 LOT 11 LOT 10
LOT 15
LOT 8
LOT 9 LOT 16
LOT 1 LOT 2
LOT 3 LOT 4
LOT 5 LOT 6 LOT 7
LOT 13 LOT 12 LOT 11 LOT 10
LOT 15 LOT 14
LOT 1
LOT 9
LOT 8
LOT 16
LOT 2
LOT 1
LOT 3
LOT 4
LOT 5
LOT 6
LOT 7
LOT 8
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LOT 19 LOT 18 LOT 17 LOT 16 LOT 15 LOT 14 LOT 13
LOT 12 LOT 11
LOT 19 LOT 18 LOT 17 LOT 16 LOT 15
LOT 14
LOT 13 LOT 12 LOT 11
LOT 4 LOT 5 LOT 6 LOT 7 LOT 8
LOT 7 LOT 8 LOT 9 LOT 10 LOT 1 LOT 2 LOT 3
LOT 6
LOT 20 LOT 10
LOT 3 LOT 4 LOT 5 LOT 9
LOT 1 LOT 2
LOT 2 LOT 3 LOT 4 LOT 5 LOT 6
LOT 7
LOT 15 LOT 14 LOT 13 LOT 15 LOT 14 LOT 13 LOT 12 LOT 11 LOT 10
LOT 17 LOT 16
LOT 7 LOT 8 LOT 9 LOT 10
LOT 9
LOT 1 LOT 8
LOT 16
LOT 11
LOT 12
LOT 5 LOT 6
LOT 3 LOT 4
LOT 2
LOT 1
LOT 22
LOT 21
LOT 20 LOT 19
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LOT 1
LOT 2
LOT 3
LOT 6
LOT 10
LOT 11
LOT 4
LOT 5
LOT 7
LOT 8
LOT 9
LOT 1
LOT 2
LOT 3
LOT 4
LOT 5
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LOT 1 LOT 2 LOT 3 LOT 4
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LOT 9 LOT 8
LOT 12 LOT 11 LOT 10
LOT 13
TRACT I
TRACT T
TRACT Y TRACT X TRACT W
TRACT D
TRACT S
TRACT R
TRACT P
TRACT V
TRACT M
TRACT K
TRACT N
TRACT L
TRACT Q
TRACT U
TRACT E
TRACT F
TRACT J
TRACT H
TRACT O
TRACT Z
TRACT AA
TRACT A
TRACT C
TRACT G
TRACT E
TRACT E
TRACT E
TRACT E
TRACT E
TRACT E
TRACT E
TRACT B TRACT BB
BLOCK 7
BLOCK 8
BLOCK 9
BLOCK 9
BLOCK 20 BLOCK 21
BLOCK 10
BLOCK 19
BLOCK 7
BLOCK 10
BLOCK 18
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BLOCK 17 BLOCK 23
BLOCK 11
BLOCK 8
BLOCK 5
BLOCK 5
BLOCK 6
BLOCK 6
BLOCK 12
BLOCK 11
BLOCK 15
BLOCK 16
BLOCK 16
BLOCK 23
BLOCK 22
BLOCK 24
BLOCK 14
BLOCK 13
BLOCK 4 BLOCK 12
BLOCK 4
BLOCK 1
BLOCK 1
BLOCK 13
BLOCK 14
BLOCK 24
BLOCK 26
BLOCK 28
BLOCK 30
BLOCK 26
BLOCK 25
BLOCK 28
BLOCK 27
BLOCK 30
BLOCK 29
BLOCK 31 BLOCK 32
BLOCK 33
BLOCK 29
BLOCK 33
BLOCK 27
BLOCK 25
BLOCK 1
BLOCK 1
BLOCK 4
BLOCK 4
BLOCK 2
BLOCK 2
BLOCK 3
BLOCK 3
BLOCK 2
BLOCK 2
BLOCK 3
BLOCK 3
150' 0 75' 150' 300' N O R T H
russell + mills studios
141 s. college ave., suite 104
fort collins, co 80524
p: 970.484.8855
www.russellmillsstudios.com
OVERALL LANDSCAPE PLAN
LP103
FUTURE NEIGHBORHOOD
PARK (±8.0AC)
1
5
4
2
3
6
6
7
CALL 2 BUSINESS DAYS IN ADVANCE BEFOREYOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUNDMEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
#
THESE PLANS ARE AN INSTRUMENT OF
SERVICE AND ARE THE PROPERTY OF
GALLOWAY, AND MAY NOT BE DUPLICATED,
DISCLOSED, OR REPRODUCED WITHOUT
THE WRITTENCONSENT OF THE
ARCHITECT. COPYRIGHTSAND
INFRINGEMENTS WILL BE ENFORCED AND
PROSECUTED.
3760 E. 15th Street, Suite 202
Loveland, CO80538
970.800.3300 O
www.gallowayUS.com
C 2015. Galloway& Company, Inc. All RightsReserved
SHEET TITLE:
Date:
Drawn By:
Project No:
Checked By:
HFHLV0001.01
03/23/16
EAST RIDGE HOLDINGS
4801 Goodman Rd.
Timnath, CO 80547
970.674.1109
NOT FOR CONSTRUCTION
03/23/16
CityDate Engineer
Date
Date
Date
Date
Stormwater Utility
Parks & Recreation
Traffic Engineer
Date
APPROVED:
CHECKEDBY:
CHECKEDBY:
CHECKEDBY:
CHECKEDBY:
CHECKEDBY:
Water & WastewaterUtility
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
EnvironmentalPlanner
1. BIOSWALE - LID:
TRIBUTARY AREA: A-BASINS (INCLUDES FUT-A)
DESIGNFLOW:Q2 ~ 27.1 CFS
LENGTH: 450 FT, CHANNEL SLOPE: 0.0025 FT/FT, CHANNELSIDESLOPES:5:1, BOTTOM WIDTH: 30 FT
2. SANDFILTER (SF) - LID:
TRIBUTARY AREA: B-, E- AND F-BASINS (INCLUDES FUT-B)
DESIGNVOLUME: 0.75 AC-FT
3. EXTENDEDDETENTIONBASIN (EDB) - WQCV:
TRIBUTARY AREA: C- AND D-BASINS
DESIGNVOLUME: 0.61 AC-FT
4. EXTENDEDDETENTIONBASIN (EDB) - WQCV:
TRIBUTARY AREA: G- AND H-BASINS (INCLUDES FUT-G,
FUT-H ANDFUT-TL2)
DESIGNVOLUME: 0.94 AC-FT
5. SANDFILTER (SF) - LID:
TRIBUTARY AREA: I-BASINS (INCLUDES FUT-I BASINS
AND FUT-TL3)
DESIGNVOLUME: 0.33 AC-FT
GRASS BUFFER (GB) - LID:
TRIBUTARY AREA: VARIES
LENGTH: 14 FT (MIN.), MAX. SLOPE=10%
DETENTION PONDWATERSURFACE ELEVATION:
NOTES:
1
LEGEND:
2
3
4
5
6
PROPOSEDRIGHT-OF-WAY
PROPOSEDSTORMSEWER
EXISTING STORMSEWER
PROPOSEDSTORM INLET
PROPOSEDLOTLINE
EASEMENTLINE
FUTURE LOTLINE
FUTURE RIGHT-OF-WAY
EXISTING MINORCONTOUR
EXISTING MAJORCONTOUR
PROPOSED MINORCONTOUR
PROPOSEDMAJORCONTOUR 4900
4900
35
7
**FOR 2,3,4 AND 5 - EACH CORRESPONDING HATCHPATTERNINDICATESTHELIMITS
OF THE WATERQUALITY STORM EVENT WATERSURFACE ELEVATION.
2-YEAR
WSEL=4933.96
WSEL=4930.99
WSEL=4931.59
WSEL=4930.36
OVERLAND FLOWDIRECTION
(I.E., LANDSCAPING)
DRAINAGE SYMBOLS:
DIRECT FLOW DIRECTION
(I.E., PAVEMENT, CURB AND
GUTTER)
8''SS
8''SS 8''SS
8''SS
8''W
8''W 8''W 8''W 8''W
8''W
8''W 8''W
8''SS 8''SS
1
2''W
8''SS 8''SS
8''W 8''W 8''W 8''W 8''W 8''W
8''W
8
''W 8''W 8''W 8''W
8''W 8''W 8''W 8''W 8''W 8''W
8''W
8
''W 8''W 8''W
8''W 8''W
SYKESDRIVE
COMET STREET
(B)
RELIANT STREET
CRUSADER STREET
(B)
VICOT WAY
PRIVATE DRIVEAA
ZEPPELIN WAY
PRIVATE DRIVE TIGERCATW
AY
DASSAULT STREET
DELOZIER ROAD
VICOT WAY
QUINBY STREET
CRUSADER STREET
(B)
ZEPPELIN WAY
ALLEYB
COMET STREET
(B)
PRIVATE DRIVE C
LOT15
LOT14
LOT13
LOT12
LOT21
LOT20
LOT19
LOT18
LOT15
LOT14
LOT13
LOT12
LOT11
LOT22
LOT23
LOT24
LOT9
LOT10
LOT11
LOT10
LOT9
LOT8
LOT7
LOT35
LOT34
LOT33
LOT32
LOT31
LOT30
LOT29
LOT28
LOT27
LOT26
LOT25
LOT24
LOT17
LOT18
LOT19
LOT20
LOT23
LOT22
LOT21
LOT36
LOT37
LOT6
LOT5
LOT27
LOT6
LOT12
LOT11
LOT24
LOT25
LOT23
LOT13
LOT12
LOT11
LOT23
LOT24
LOT22
LOT21
LOT25
LOT26
LOT27
LOT28
LOT29
LOT7
LOT8
LOT9
LOT16
LOT17
LOT16
LOT8
LOT7
LOT26
LOT25
LOT38
LOT39
LOT40
LOT4
LOT3
LOT2
LOT1
LOT28
LOT29
LOT30
LOT31
LOT32
LOT1
LOT2
LOT3
LOT4
LOT5
LOT20
LOT19
LOT18
LOT17
LOT14
LOT15
LOT16
LOT22
LOT21
LOT20
LOT19
LOT18
LOT17
LOT16
LOT15
LOT14
LOT13
LOT26
LOT10
LOT9
LOT10
LOT2 LOT3 LOT4
LOT5 LOT6 LOT7
LOT12LOT11LOT10
LOT15LOT14LOT13
LOT8
LOT9 LOT16
LOT1 LOT2
LOT3 LOT4 LOT5 LOT6 LOT7
LOT13LOT12LOT11LOT10
LOT15LOT14
LOT2 LOT3 LOT4
LOT5 LOT6 LOT7
LOT8 LOT6LOT7
LOT1LOT2LOT3LOT4LOT5
LOT1
LOT1
LOT9
LOT8
LOT8
LOT16
LOT2 LOT3 LOT4
LOT5 LOT6 LOT7
LOT13LOT12LOT11LOT10
LOT15LOT14
LOT8
LOT9 LOT16
LOT1 LOT2
LOT3 LOT4
LOT5 LOT6 LOT7
LOT12LOT11LOT10
LOT15LOT14LOT13
LOT1
LOT9
LOT8
LOT16
LOT2
LOT1
LOT3
LOT4
LOT5
LOT6
LOT7
LOT8
LOT9
LOT10
LOT11
LOT19 LOT18 LOT17 LOT16 LOT15
LOT14 LOT13 LOT12
LOT11 LOT19 LOT18 LOT17 LOT16
LOT15
LOT14
LOT13 LOT12 LOT11
LOT5LOT6LOT7LOT8
LOT8LOT9LOT10LOT1LOT2LOT3LOT4
LOT6LOT7
LOT20 LOT10
LOT3LOT4LOT5LOT9
LOT1LOT2
LOT14LOT13LOT15LOT14LOT13LOT12LOT11LOT10
LOT17LOT16LOT15 LOT12LOT16LOT9
LOT22
LOT21
LOT20 LOT19
LOT18
LOT6
LOT7
TRACT I
TRACT Y TRACT X TRACT W
TRACT D
TRACT V
TRACTK
TRACT U
T
RACT E
TRACT F
TRACT J
TRACTH
TRACT Z
TRACT AA
TRACTC
TRACT G
TRACTE
TRACTE
TRACT E
TRACTE
TRACT E
TRACTE
TRACTE
TRACTB TRACT BB
BLOCK13
BLOCK14
BLOCK24
BLOCK26
BLOCK28
BLOCK30
BLOCK26
BLOCK25
BLOCK28
BLOCK27
BLOCK30
BLOCK29
BLOCK31BLOCK32
BLOCK33
BLOCK29
BLOCK33
BLOCK27
BLOCK25
BLOCK1
BLOCK1
BLOCK4
BLOCK4
BLOCK2
BLOCK2
BLOCK3
BLOCK3
BLOCK2
BLOCK2
BLOCK3
BLOCK3
PRIVATE DRIVED
PRIVATE DRIVEE
PRI
VATE DRIVE C
PRIVATE DRIVE TIGERCATWAY
PHASE
1
PHASE
1
PHASE
1
PHASE
2
PHASE
5
CITY
PARK
PHASE
5
3
#
THESE PLANS ARE AN INSTRUMENTOF
SERVICE AND ARE THE PROPERTYOF
GALLOWAY, AND MAY NOT BE DUPLICATED,
DISCLOSED, OR REPRODUCED WITHOUT
THE WRITTENCONSENT OF THE
ARCHITECT. COPYRIGHTSAND
INFRINGEMENTS WILL BE ENFORCED AND
PROSECUTED.
3760 E. 15th Street, Suite 202
Loveland, CO80538
970.800.3300 O
www.gallowayUS.com
C 2015. Galloway& Company, Inc. All RightsReserved
SHEET TITLE:
Date:
Drawn By:
Project No:
Checked By:
HFHLV0001.01
03/23/16
EAST RIDGE HOLDINGS
4801 Goodman Rd.
Timnath, CO 80547
970.674.1109
NOT FOR CONSTRUCTION
03/23/16
MATCHLINE-SEE SHEET PH01
1. THE PHASE LINES SHOWNDELINEATE THE LOTS THAT ARE INCLUDEDWITHINA PHASE. GRADINGAND
INSTALLATIONOF INFRASTRUCTURE OUTSIDE THE LIMITS OF THE PHASE MAY BE REQUIRED.
2. ROADWAYS MAY REQUIRE SAWCUTS, MILLING AND/OR PATCHING OF ASPHALT. FINAL LIMITSWILLBE
DETERMINED IN THE FIELDBY THE CITY ENGINEERING INSPECTOR. ALLPATCHING ANDSTREET
REPAIRS SHALLBE PERTHE MOST CURRENT CITY STANDARDS.
3. THE PHASING DESIGNATIONS SHOWN ARE FOR REFERENCE ONLY, THEY MAY NOT HAVE ANY
RELATIONSHIP TO THE ACTUAL CONSTRUCTIONSEQUENCE.
4. TEMPORARY FIRE HYDRANTS ARE REQUIREDAT THE UPSTREAM END OF ALL "DEAD-END" WATERLINES
IN EACHPHASE. THE FIRE HYDRANTS SHALL BE REMOVEDUPONCONTINUATIONOF THE WATERMAIN
DURING THE CONSTRUCTIONOFTHENEXTPHASE.
5. SANITARY SEWERMAINSHALLBE EXTENDEDTO THE NEXT MANHOLE BEYONDTHEPHASELINE.
6. FOR DETAILEDOVERLOT GRADING SEE SHEETS GR01-GR08
NOTES:
LEGEND:
PROJECT BOUNDARY
PHASE LINE
CityDate Engineer
Date
Date
Date
Date
Stormwater Utility
Parks & Recreation
Traffic Engineer
Date
APPROVED:
CHECKEDBY:
CHECKEDBY:
CHECKEDBY:
CHECKEDBY:
CHECKEDBY:
Water & Wastewater Utility
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
EnvironmentalPlanner
GENERAL MANAGER
REVIEWEDBY:
DATE:
UTILITY PLAN REVIEW
BOXELDER SANITATION DISTRICT
REVIEW DOES NOTCONSTITUTE "APPROVAL" OF PLANS. PLAN ENGINEER IS
RESPONSIBLEFOR ACCURACY AND COMPLETENESS.
REVIEW DOES NOTCONSTITUTE "APPROVAL" OF PLANS. PLAN ENGINEER IS RESPONSIBLE
FOR ACCURACY AND COMPLETENESS.
GENERAL MANAGER
REVIEWEDBY:
DATE:
EAST LARIMER COUNTY WATER DISTRICT
UTILITY PLAN REVIEW
PHASING LEGEND:
PHASE ONE -
PHASE TWO -
PHASE THREE-
PHASE FOUR-
PHASE FIVE-
PHASE SIX -
PHASE SEVEN -
PHASE EIGHT -
PHASE NINE-
CITY PARK -
TEMP. FIREHYDRANT
PROPOSED
ROADWAY
END OF PHASE ROADWAY
AND UTILITY TERMINATIONS
TYPE III
BARRICADE
10'x5'x1.5' TYPE 'L'
RIPRAP PAD
10'x5'x1.5' TYPE 'L'
RIPRAP PAD
CONSTRUCT SANITARY TO
SSMANHOLE 8" NEXT
W 8" W 8"
SS 8"
UTILITY PHASING
PHASE REQUIRED UTILITY INFRASTRUCTURE
1 SANITARY
SS LINE 1 SSMH 1 to SSMH 1-13, SS LINE 1-4 SSMH 1-4 to SSMH 1-4.7, SS
LINE 1-4.3, SS LINE 1-4.5, SS LINE 1-4.6, SS LINE 1-5, SS LINE 1-6, SS LINE
1-7, SS LINE 1-9, SS LINE 1-11, SS LINE 1-11.2, SS LINE 1-11.3, SS LINE
1-11.5 SSMH 1-11.5 to 1-11.5-1
1 STORM
SD LINE A, SD LINE A4, SD LINE A6, SD LINE B, SD LINE B3, SD LINE B4, SD
LINE B6, SD LINE B8, SD LINE B9, SD LINE C SDMH C to SDMH C5, SD LINE
C3, SD LINE D SDMH D to SD INLET D5, SD LINE D2, SD LINE D4SDLINE
D4.1, SD LINE E SDMH E to SDMH E15, SD LINE E13, SD LINE G, SD LINE G2,
POND OUTFALL, IRRIGATION, IRRIGATION5
2 SANITARY SS LINE 1-4 SSMH 1-4.7 to 1-4.11, SSMH 1-11.5 SSMH 1-11.5-1 to SSMH
1-11.5-2
4 SANITARY SS LINE 1-12, SS LINE 1-12.4 SSMH 1-12.4 to SSMH 1-12.4-1, SS LINE1-12.5
SSMH 1-12.5 to 1-12.5-1
4 STORM SD LINE C SDMH C5 to SDMH C7, SD LINE C5, SD LINEC6
UTILITY PHASING
PHASE REQUIRED UTILITY INFRASTRUCTURE
6 SANITARY SS LINE 1-12.4 SSMH 1-12.4-1 to 1-12.4-2, SS LINE 1-12.5 SSMH 1-12.5-1 to
SSMH 1-12.5-2
6 STORM
SD LINE C SDMH C7 to INLET C11, SD LINE C7, SD LINE C7.1, SD LINE C9,
SD LINE C10,
7 SANITARY
SS LINE 1 SSMH 1-13 to SSMH 1-17, SS LINE 1-12A, SS LINE 1-12A.3, SS LINE
1-12A.4, SS LINE 1-14, SS LINE 1-15 SSMH 1-15 to SSMH 1-15.1, SS LINE
1-15A, SS LINE 1-16, SS LINE 1-16A SSMH 1-16 to SSMH 1-16A.1, SS LINE
1-17 SSMH 1-17 to 1-17.1, SS LINE 1-17A
7 STORM SD LINE D INLET D5 to FESD18,
8''SS8''SS 8''SS 8''SS
8''SS 8''SS
18''SS 18''SS
12''W 12''W 12''W 12''W 12''W
8''SS 8''S
S 8''SS
8''SS 8''SS 8''SS
8''SS 8''SS 8''SS
12''W
12''W
12'
'W
8''W 8''W
12''W
8''W 8''W 8''W 8''W
8''SS 8''
SS
8''SS
8''SS 8''SS
8''SS
8''S
S
8''SS 8''SS 8''SS 8''SS 8''SS 8''SS 8''SS 8''SS 8''SS
8''SS
8''SS 8''SS
8''
SS 8''SS
8''SS
8''SS 8''SS 8''SS 8''SS
8''SS 8''SS 8''SS 8''SS
8''W 8''W
8''W12''W 8''W 12''W
8''W
8''W
8''W
8''W
8''W
8'
'W
8''W
8''W
8''W 8''W
8''W 8''W
18''SS 18''SS
8''W 8'
'W
8''W
8''SS
8''W 8''W
8''W
12''W 12''W
8''SS
8''W
8''W 8''W 8''W
BARNSTORMER STREET
BIPLANE STREET
COLEMAN STREET
SUPERCUB LANE
CONQUEST STREET
VICOT WAY
NAVION LANE
VICOT WAY
YEAGER STREET
MARQUISE STREET
FAIRCHILD STREET
QUINBY STREET
FAIRCHILD STREET
SYKESDRIVE
BARNSTORMER STREET
BIPLANE STREET
COLEMAN STREET
VICOT WAY
CONQUEST STREET
CONQU
EST STREET
CONQUESTWAY
ALLEYA
A
LLEYA
ALLEY A
ALLEYA
ALLEYA
ALLEYA
MARQUISE
STREET
ZEPPELIN WAY
SYKES DRIV
E
PRIVATE DRIVE C
LOT29
LOT30
LOT31
LOT4
LOT3
LOT5
LOT6
LOT7
LOT30
LOT29
LOT28
LOT27
LOT7
LOT9
LOT8
LOT6
LOT5
LOT4
LOT3
LOT2
LOT1
LOT34
LOT33
LOT32
LOT31
LOT2
LOT1
LOT34
LOT33
LOT32
LOT12
LOT11
LOT10
LOT9
LOT8
LOT7
LOT6
LOT5
LOT4
LOT1
LOT3
LOT2
LOT15
LOT14
LOT13
LOT12
LOT11
LOT2
LOT3
LOT4
LOT5
LOT6
LOT7
LOT1
LOT8
LOT9
LOT10
LOT1
LOT2.
LOT16LOT1
LOT15
LOT3LOT14
LOT4 LOT13
LOT5LOT12
LOT6 LOT11
LOT7LOT10
LOT7
LOT6 LOT13
LOT5
LOT14
LOT4 LOT15
LOT3 LOT16
LOT2LOT17
LOT18
LOT8
LOT9
LOT8 LOT11
LOT12
LOT10
LOT9.
LOT2 LOT3
LOT4 LOT5 LOT6
LOT13LOT12LOT11LOT10
LOT1
LOT14
LOT7
LOT9LOT8
LOT3 LOT4 LOT5
LOT12LOT11LOT10
LOT1 LOT2
LOT14LOT13
LOT6 LOT7
LOT9LOT8
LOT1
LOT2
LOT3 LOT4
LOT5
LOT6
LOT7
LOT8
LOT9
LOT10
LOT11
LOT12
LOT13
LOT1
LOT2
LOT3
LOT4
LOT5
LOT6
LOT7
LOT8
LOT9
LOT10
LOT11
LOT12
LOT13
LOT14
LOT15
LOT16
LOT17
LOT18
LOT19
LOT20
LOT21
LOT2 LOT3
LOT4
LOT7 LOT6 LOT5
LOT1 LOT2
LOT3 LOT4
LOT5
LOT29LOT28LOT27
LOT31LOT30 LOT25
LOT7 LOT8 LOT9
LOT24LOT23
LOT6
LOT26
LOT10 LOT11 LOT12 LOT13
LOT1
LOT8
LOT14
LOT19
LOT22LOT21LOT20
LOT18
LOT17
LOT16
LOT15
LOT2 LOT3 LOT4
LOT5
LOT7LOT6
LOT1 LOT2
LOT3 LOT4 LOT5 LOT6 LOT7
LOT19LOT18LOT17LOT16
LOT22LOT21LOT20 LOT15
LOT14 LOT13
LOT8LOT9LOT10
LOT1
LOT8
LOT11
LOT12
LOT1 LOT2 LOT3 LOT4 LOT5 LOT6
LOT9LOT8LOT7
LOT10
LOT12LOT11
LOT3
LOT2
LOT4
LOT5
LOT6
LOT7
LOT8
LOT1
LOT3 LOT14
LOT4
LOT5
LOT6
LOT13
LOT12
LOT11
LOT7LOT10
LOT8 LOT9
LOT1 LOT16
LOT2LOT15
LOT2 LOT3 LOT4 LOT5 LOT6 LOT7
LOT7 LOT8 LOT9
LOT5LOT6LOT11LOT1LOT8 LOT10
LOT4
LOT2LOT3
LOT1
LOT1
LOT2
LOT3
LOT6
LOT10
LOT11
LOT4
LOT5
LOT7
LOT8
LOT9
LOT1
LOT2
LOT3
LOT4
LOT5
LOT6
LOT7
LOT8
LOT1 LOT2 LOT3
LOT4 LOT5
LOT6
LOT7
LOT9LOT8
LOT11LOT10
LOT12
LOT13
TRACT T
TRACTS
TRACTR
TRACT P
TRACTM
TRACTK
TRACT
N
TRACTL
TRACT Q
TRACT U
TRACT O
TRACTA
TRACTE
BLOCK7
BLOCK8
BLOCK9
BLOCK9
BLOCK20 BLOCK21
BLOCK10 BLOCK19
BLOCK7
BLOCK10
BLOCK18
BLOCK19
BLOCK21
BLOCK22
BLOCK17BLOCK23
BLOCK11
BLOCK8
BLOCK5
BLOCK5
BLOCK6
BLOCK6
BLOCK12
BLOCK11
BLOCK15
BLOCK16
BLOCK16
BLOCK23
BLOCK22
BLOCK24
BLOCK14
BLOCK13
BLOCK4BLOCK12
BLOCK4
BLOCK1
BLOCK1
BLOCK13
PHASE
6
PHASE
8
PHASE
4
PHASE
PHASE
2
PHASE
5
PHASE
4
PHASE
7
PHASE
7
PHASE
9
PHASE
9
PHASE
6
PHASE
PHASE 1
3
#
THESE PLANSARE AN INSTRUMENTOF
SERVICE AND ARE THE PROPERTYOF
GALLOWAY, AND MAY NOT BE DUPLICATED,
DISCLOSED, OR REPRODUCED WITHOUT
THE WRITTENCONSENT OF THE
ARCHITECT. COPYRIGHTSAND
INFRINGEMENTS WILL BE ENFORCED AND
PROSECUTED.
3760 E. 15th Street, Suite 202
Loveland, CO80538
970.800.3300 O
www.gallowayUS.com
C 2015. Galloway& Company, Inc. All RightsReserved
SHEET TITLE:
Date:
Drawn By:
Project No:
Checked By:
HFHLV0001.01
03/23/16
EAST RIDGE HOLDINGS
4801 Goodman Rd.
Timnath, CO 80547
970.674.1109
NOT FOR CONSTRUCTION
03/23/16
MATCHLINE-SEE SHEET PH02
1. THE PHASE LINES SHOWNDELINEATE THE LOTS THAT ARE INCLUDEDWITHINA PHASE. GRADINGAND
INSTALLATIONOF INFRASTRUCTURE OUTSIDE THE LIMITS OF THE PHASE MAY BE REQUIRED.
2. ROADWAYS MAY REQUIRE SAWCUTS, MILLING AND/OR PATCHING OF ASPHALT. FINAL LIMITSWILLBE
DETERMINED IN THE FIELDBY THE CITY ENGINEERING INSPECTOR. ALLPATCHING ANDSTREET
REPAIRS SHALLBE PERTHE MOST CURRENT CITY STANDARDS.
3. THE PHASING DESIGNATIONS SHOWN ARE FOR REFERENCE ONLY, THEY MAY NOT HAVE ANY
RELATIONSHIP TO THE ACTUAL CONSTRUCTIONSEQUENCE.
4. TEMPORARY FIRE HYDRANTS ARE REQUIREDAT THE UPSTREAM END OF ALL "DEAD-END" WATERLINES
IN EACHPHASE. THE FIRE HYDRANTS SHALL BE REMOVEDUPONCONTINUATIONOF THE WATERMAIN
DURING THE CONSTRUCTIONOFTHENEXTPHASE.
5. SANITARY SEWERMAINSHALLBE EXTENDEDTO THE NEXT MANHOLE BEYONDTHEPHASELINE.
6. FOR DETAILEDOVERLOT GRADING SEE SHEETS GR01-GR08
NOTES:
LEGEND:
PROJECT BOUNDARY
PHASE LINE
CityDate Engineer
Date
Date
Date
Date
Stormwater Utility
Parks & Recreation
Traffic Engineer
Date
APPROVED:
CHECKEDBY:
CHECKEDBY:
CHECKEDBY:
CHECKEDBY:
CHECKEDBY:
Water & WastewaterUtility
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
EnvironmentalPlanner
GENERAL MANAGER
REVIEWEDBY:
DATE:
UTILITY PLAN REVIEW
BOXELDER SANITATION DISTRICT
REVIEWDOES NOTCONSTITUTE "APPROVAL" OF PLANS. PLAN ENGINEER IS
RESPONSIBLEFOR ACCURACY AND COMPLETENESS.
REVIEWDOES NOTCONSTITUTE "APPROVAL" OF PLANS. PLAN ENGINEER IS RESPONSIBLE
FOR ACCURACY AND COMPLETENESS.
GENERAL MANAGER
REVIEWEDBY:
DATE:
EAST LARIMER COUNTY WATER DISTRICT
UTILITY PLAN REVIEW
PHASING LEGEND:
PHASE ONE -
PHASE TWO -
PHASE THREE-
PHASE FOUR-
PHASE FIVE-
PHASE SIX -
PHASE SEVEN -
PHASE EIGHT -
PHASE NINE-
CITY PARK -
TEMP. FIREHYDRANT
PROPOSED
ROADWAY
END OF PHASE ROADWAY
AND UTILITY TERMINATIONS
TYPE III
BARRICADE
10'x5'x1.5' TYPE 'L'
RIPRAP PAD
10'x5'x1.5' TYPE 'L'
RIPRAP PAD
CONSTRUCT SANITARY TO
SSMANHOLE 8" NEXT
W 8" W 8"
SS 8"
UTILITY PHASING
PHASE REQUIRED UTILITY INFRASTRUCTURE
1 SANITARY
SS LINE 1 SSMH 1 to SSMH 1-13, SS LINE 1-4 SSMH 1-4 to SSMH 1-4.7, SS
LINE 1-4.3, SS LINE 1-4.5, SS LINE 1-4.6, SS LINE 1-5, SS LINE 1-6, SS LINE
1-7, SS LINE 1-9, SS LINE 1-11, SS LINE 1-11.2, SS LINE 1-11.3, SS LINE
1-11.5 SSMH 1-11.5 to 1-11.5-1
1 STORM
SD LINE A, SD LINE A4, SD LINE A6, SD LINE B, SD LINE B3, SD LINE B4, SD
LINE B6, SD LINE B8, SD LINE B9, SD LINE C SDMH C to SDMH C5, SD LINE
C3, SD LINE D SDMH D to SD INLET D5, SD LINE D2, SD LINE D4SDLINE
D4.1, SD LINE E SDMH E to SDMH E15, SD LINE E13, SD LINE G, SD LINE G2,
POND OUTFALL, IRRIGATION, IRRIGATION5
2 SANITARY SS LINE 1-4 SSMH 1-4.7 to 1-4.11, SSMH 1-11.5 SSMH 1-11.5-1 to SSMH
1-11.5-2
4 SANITARY SS LINE 1-12, SS LINE 1-12.4 SSMH 1-12.4 to SSMH 1-12.4-1, SS LINE1-12.5
SSMH 1-12.5 to 1-12.5-1
4 STORM SD LINE C SDMH C5 to SDMH C7, SD LINE C5, SD LINEC6
UTILITY PHASING
PHASE REQUIRED UTILITY INFRASTRUCTURE
6 SANITARY SS LINE 1-12.4 SSMH 1-12.4-1 to 1-12.4-2, SS LINE 1-12.5 SSMH 1-12.5-1 to
SSMH 1-12.5-2
6 STORM
SD LINE C SDMH C7 to INLET C11, SD LINE C7, SD LINE C7.1, SD LINE C9,
SD LINE C10,
7 SANITARY
SS LINE 1 SSMH 1-13 to SSMH 1-17, SS LINE 1-12A, SS LINE 1-12A.3, SS LINE
1-12A.4, SS LINE 1-14, SS LINE 1-15 SSMH 1-15 to SSMH 1-15.1, SS LINE
1-15A, SS LINE 1-16, SS LINE 1-16A SSMH 1-16 to SSMH 1-16A.1, SS LINE
1-17 SSMH 1-17 to 1-17.1, SS LINE 1-17A
7 STORM SD LINE D INLET D5 to FESD18,
IP
IP
SF
SF
SF
SF SF
SF
SF
IP
IP
IP
IP
TIMBERLINE ROAD
INTERNATIONAL BOULEVARD
(FUTURE ALIGNMENT)
#
THESE PLANS ARE AN INSTRUMENTOF
SERVICE AND ARE THE PROPERTYOF
GALLOWAY, AND MAY NOT BE DUPLICATED,
DISCLOSED, OR REPRODUCED WITHOUT
THE WRITTENCONSENT OF THE
ARCHITECT. COPYRIGHTSAND
INFRINGEMENTS WILL BE ENFORCED AND
PROSECUTED.
3760 E. 15th Street, Suite 202
Loveland, CO80538
970.800.3300 O
www.gallowayUS.com
C 2015. Galloway& Company, Inc. All RightsReserved
SHEET TITLE:
Date:
Drawn By:
Project No:
Checked By:
HFHLV0001.01
01/27/16
EAST RIDGE HOLDINGS
4801 Goodman Rd.
Timnath, CO 80547
970.674.1109
NOT FOR CONSTRUCTION
01/27/16
MATCHLINE-SEE SHEET EC01
LEGEND:
PROPOSEDCONTOUR
EXISTING STORMSEWER
PROPOSEDSTORMSEWER
PROPOSEDSWALE
EXISTING CONTOUR
PROPOSEDCURB & GUTTER
PROPOSEDSTORM INLET
PROPOSEDCONCRETE
CROSSPAN (TYP.)
1. THIS EROSIONCONTROL PLAN ANDASSOCIATEDSWMP ARE LIVING DOCUMENTS REQUIRING PERIODIC
REVIEWANDUPDATING AS SITE CONDITIONS CHANGE OR AS REQUIREDBY LOCAL AUTHORITIES. IT IS
THE CONTRACTOR'S RESPONSIBILITY TO ENSURE ONGOING COMPLIANCE WITH THE REQUIREMENTS
OF THE STORMWATER DISCHARGE PERMIT.
2. THE SIZE, TYPE AND LOCATIONOF ALL KNOWN UNDERGROUNDUTILITIES ARE APPROXIMATEWHEN
SHOWNON THESE DRAWINGS. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO VERIFY
THE EXISTENCE OF ALL UNDERGROUNDUTILITIES IN THE AREA OF THE WORK. BEFORE COMMENCING
NEW CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONSIBLE FORLOCATINGALLUNDERGROUND
UTILITIES ANDSHALLBE RESPONSIBLE FOR ALL UNKNOWN UNDERGROUNDUTILITIES.
3. EROSIONCONTROL PRACTICES, SITE PROTECTION AND REVEGETATIONMETHODS SHALL FOLLOW
CITY OF FORT COLLINS REGULATIONS.
4. DURING CONSTRUCTIONPHASING, INSTALL EROSIONCONTROL MEASURES FOLLOWING BMPS WITH
EACHPHASE, AS REQUIRED.
5. PERIMETERPROTECTION (I.E., STRAWWATTLES) IS SHOWNAROUNDEACHBLOCK THATISAPARTOF
THE PROPOSEDPHASE 1 IMPROVEMENTS. REFERTO THE LEGEND (SEE RIGHT). THIS PERIMETER
PROTECTION SHALL BE INSTALLEDWHENCURB, GUTTER ANDSIDEWALK INSTALLATIONIS
COMPLETED IN THE ADJOINING RIGHT-OF-WAY.
6. FOLLOWING OVERLOT GRADING OR ANY OTHER LANDDISTURBING ACTIVITY, ALL OTHERAREASOF
THE SITE TO BE DEVELOPEDDURING LATER PHASES OF CONSTRUCTION AND WHICH SHALL REMAIN
EXPOSEDFORMORE THAN THIRTY-(30) DAYS WILL REQUIRE TEMPORARY OR PERMANENTEROSION
CONTROL (I.E., SEED/MULCH, LANDSCAPING, ETC.).
7. SEE LANDSCAPE PLANS FOR ADDITIONAL INFORMATIONON SEEDING/PLANTING, REVEGETATION,
EROSION FABRIC/BLANKETS, IRRIGATION, HARDSCAPE AND OTHERTEMPORARY AND PERMANENT
SITE STABILIZATIONMETHODS.
8. SEE EROSIONCONTROL NOTES ON THIS SHEET ANDGRADING & EROSIONCONTROL NOTES ON SHEET
CV02, AS WELLAS DETAILS ON SHEETS DT06 & DT10-DT11.
GENERAL NOTES:
VEHICLE TRACKINGCONTROLPAD
SILT FENCE
PLANTEDRIPRAP PROTECTION
SWALE WATTLEDIKE
INLET PROTECTION
CONCRETE WASHOUT AREA
NOTE:
ALL BMPS SHOWN ON THIS PLAN ARE GRAPHIC
REPRESENTATIONS ONLY. FINAL DETERMINATION OF SIZE
AND LOCATION SHALL BE DETERMINED BY THE CONTRACTOR.
PERMANENT BMP'S
TEMPORARY BMPS
SEDIMENT BASIN
EROSIONCONTROL BLANKET
STABILIZEDSTAGINGAREA
STOCKPILE MANAGEMENT
100-YR FLOODPLAIN
PHASE 1 DEVELOPMENT
ROCK SOCK
PROJECT BOUNDARY
WD
SF
IP
CWA
SSA
SP
VTC
RS
ECB
RP
SB
OUTLET STRUCTUREPROTECTION OSP
LOT PERIMETERPROTECTION WD
IP
IP
IP
IP IP
IP
IP
IP
IP
SF
SF
SF
SF
SF
SF
SF
TIMBERLINE ROAD
#
THESE PLANS ARE AN INSTRUMENTOF
SERVICE AND ARE THE PROPERTYOF
GALLOWAY, AND MAY NOT BE DUPLICATED,
DISCLOSED, OR REPRODUCED WITHOUT
THE WRITTENCONSENT OF THE
ARCHITECT. COPYRIGHTSAND
INFRINGEMENTS WILL BE ENFORCED AND
PROSECUTED.
3760 E. 15th Street, Suite 202
Loveland, CO80538
970.800.3300 O
www.gallowayUS.com
C 2015. Galloway& Company, Inc. All RightsReserved
SHEET TITLE:
Date:
Drawn By:
Project No:
Checked By:
HFHLV0001.01
01/27/16
EAST RIDGE HOLDINGS
4801 Goodman Rd.
Timnath, CO 80547
970.674.1109
NOT FOR CONSTRUCTION
01/27/16
MATCHLINE-SEE SHEET EC02
LEGEND:
PROPOSEDCONTOUR
EXISTING STORMSEWER
PROPOSEDSTORMSEWER
PROPOSEDSWALE
EXISTING CONTOUR
PROPOSEDCURB & GUTTER
PROPOSEDSTORM INLET
PROPOSEDCONCRETE
CROSSPAN (TYP.)
1. THIS EROSIONCONTROL PLAN ANDASSOCIATEDSWMP ARE LIVING DOCUMENTS REQUIRING PERIODIC
REVIEWANDUPDATING AS SITE CONDITIONS CHANGE OR AS REQUIREDBY LOCAL AUTHORITIES. IT IS
THE CONTRACTOR'S RESPONSIBILITY TO ENSURE ONGOING COMPLIANCE WITH THE REQUIREMENTS
OF THE STORMWATER DISCHARGE PERMIT.
2. THE SIZE, TYPE AND LOCATIONOF ALL KNOWN UNDERGROUNDUTILITIES ARE APPROXIMATEWHEN
SHOWNON THESE DRAWINGS. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO VERIFY
THE EXISTENCE OF ALL UNDERGROUNDUTILITIES IN THE AREA OF THE WORK. BEFORE COMMENCING
NEW CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONSIBLE FORLOCATINGALLUNDERGROUND
UTILITIES ANDSHALLBE RESPONSIBLE FOR ALL UNKNOWN UNDERGROUNDUTILITIES.
3. EROSIONCONTROL PRACTICES, SITE PROTECTION AND REVEGETATIONMETHODS SHALL FOLLOW
CITY OF FORT COLLINS REGULATIONS.
4. DURING CONSTRUCTIONPHASING, INSTALL EROSIONCONTROL MEASURES FOLLOWING BMPS WITH
EACHPHASE, AS REQUIRED.
5. PERIMETERPROTECTION (I.E., STRAWWATTLES) IS SHOWNAROUNDEACHBLOCK THATISAPARTOF
THE PROPOSEDPHASE 1 IMPROVEMENTS. REFERTO THE LEGEND (SEE RIGHT). THIS PERIMETER
PROTECTION SHALL BE INSTALLEDWHENCURB, GUTTER ANDSIDEWALK INSTALLATIONIS
COMPLETED IN THE ADJOINING RIGHT-OF-WAY.
6. FOLLOWING OVERLOT GRADING OR ANY OTHER LANDDISTURBING ACTIVITY, ALL OTHERAREASOF
THE SITE TO BE DEVELOPEDDURING LATER PHASES OF CONSTRUCTION AND WHICH SHALL REMAIN
EXPOSEDFORMORE THAN THIRTY-(30) DAYS WILL REQUIRE TEMPORARY OR PERMANENTEROSION
CONTROL (I.E., SEED/MULCH, LANDSCAPING, ETC.).
7. SEE LANDSCAPE PLANS FOR ADDITIONAL INFORMATIONON SEEDING/PLANTING, REVEGETATION,
EROSION FABRIC/BLANKETS, IRRIGATION, HARDSCAPE AND OTHERTEMPORARY AND PERMANENT
SITE STABILIZATIONMETHODS.
8. SEE EROSIONCONTROL NOTES ON THIS SHEET ANDGRADING & EROSIONCONTROL NOTES ON SHEET
CV02, AS WELLAS DETAILS ON SHEETS DT06 & DT10-DT11.
GENERAL NOTES:
VEHICLE TRACKINGCONTROLPAD
SILT FENCE
PLANTEDRIPRAP PROTECTION
SWALE WATTLEDIKE
INLET PROTECTION
CONCRETE WASHOUT AREA
NOTE:
ALL BMPS SHOWN ON THIS PLAN ARE GRAPHIC
REPRESENTATIONS ONLY. FINAL DETERMINATION OF SIZE
AND LOCATION SHALL BE DETERMINED BY THE CONTRACTOR.
PERMANENT BMP'S
TEMPORARY BMPS
SEDIMENT BASIN
EROSIONCONTROL BLANKET
STABILIZEDSTAGINGAREA
STOCKPILE MANAGEMENT
100-YR FLOODPLAIN
PHASE 1 DEVELOPMENT
ROCK SOCK
PROJECT BOUNDARY
WD
SF
IP
CWA
SSA
SP
VTC
RS
ECB
RP
SB
OUTLET STRUCTUREPROTECTION OSP
LOT PERIMETERPROTECTION WD
OR Not applicable (site has not been subdivided)
SW Construction Application for: page 3 of 5
City: Zip Code: County:
(slowly degrading)
1.5:1 (H:V) ≤0.25 @
1.5:1
2.00 lbs/ft2
(96 Pa)
100 lbs/ft
(1.45 kN/m) 24 months
Erosion Control
Blankets & Open
Weave Textiles
1:1 (H:V) ≤0.25 @
1:1
2.25 lbs/ft2
(108 Pa)
125 lbs/ft
(1.82 kN/m) 36 months
* C Factor and shear stress for mulch control nettings must be obtained with netting used in conjunction
with pre-applied mulch material. (See Section 5.3 of Chapter 7 Construction BMPs for more information
on the C Factor.)
1 Minimum Average Roll Values, Machine direction using ECTC Mod. ASTM D 5035.
2 C Factor calculated as ratio of soil loss from RECP protected slope (tested at specified or greater
gradient, H:V) to ratio of soil loss from unprotected (control) plot in large-scale testing.
3 Required minimum shear stress RECP (unvegetated) can sustain without physical damage or excess
erosion (> 12.7 mm (0.5 in) soil loss) during a 30-minute flow event in large-scale testing.
4 The permissible shear stress levels established for each performance category are based on historical
experience with products characterized by Manning's roughness coefficients in the range of 0.01 - 0.05.
5 Acceptable large-scale test methods may include ASTM D 6459, or other independent testing deemed
acceptable by the engineer.
6 Per the engineer’s discretion. Recommended acceptable large-scale testing protocol may include ASTM
D 6460, or other independent testing deemed acceptable by the engineer.
Survey Area Data: Version 9, Sep 22, 2014
Soil map units are labeled (as space allows) for map scales 1:50,000
or larger.
Date(s) aerial images were photographed: Apr 22, 2011—Apr 28,
2011
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
of map unit boundaries may be evident.
Hydrologic Soil Group—Larimer County Area, Colorado
(East Ridge Subdivision)
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
7/24/2015
Page 2 of 4