HomeMy WebLinkAboutRIGDEN FARM FILING SEVENTEEN - FDP - FDP130033 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTSTORMWATER MANAGEMENT PLAN
for
RIGDEN FARM FILING 17
Prepared for:
Meritage Homes
6892 South Yosemite Ct., Suite 1-201
Centennial, CO 80112
(303) 406-4325
Contact: Michael Bird
Prepared by:
JR ENGINEERING
2900 South College Ave., Suite 3D
Fort Collins, Colorado 80525
(970) 498-9888
August 2013
Job No. 39683.00
TABLE OF CONTENTS
INTRODUCTION....................................................................................................................4
GENERAL LOCATION AND DESCRIPTION .......................................................................4
Location....................................................................................................................................4
Description of Property.............................................................................................................4
CONSTRUCTION ACTIVITY ................................................................................................5
Description of Construction Activity .........................................................................................5
Sequence for major Activities....................................................................................................5
EROSION AND SEDIMENT CONTROL................................................................................5
Objectives .................................................................................................................................6
Structural Practices ...................................................................................................................6
Non-Structural Practices ...........................................................................................................8
Temporary and Permanent Seeding ...........................................................................................8
Mulch Trakifier .........................................................................................................................9
Other controls...........................................................................................................................9
MATERIALS MANAGEMENT.............................................................................................10
Potential Pollution Sources......................................................................................................10
Pollution Prevention Measures ................................................................................................11
Spill Management....................................................................................................................14
Non-Storm Water Components of Discharge...........................................................................15
FIANL STABILIZATION AND LONG TERM STORMWATER
MANAGEMENT....................................................................................................................17
SWMP ADMINISTRATOR ...................................................................................................18
CONCLUSION ......................................................................................................................18
REFERENCES:......................................................................................................................19
APPENDICES
Appendix A – Vicinity Map
Appendix B – Soil Hydrologic Group Map
Appendix C – Temporary and Permanent Seed Mix Table
Appendix D – Permits and Applications
Appendix E – Grading and Erosion Control Plan and Details
INTRODUCTION
The Report was prepared the Stormwater Management Plan (SWMP) for Rigden Farm
Filing 17 in the City of Fort Collins, Colorado. This report was prepared to be in
compliance with the provisions of the Colorado Water Quality Control Act and the Federal
Water Pollution Control Act. This plan describes the procedures and methods that will be
followed during construction to prevent pollution of waters of the State of Colorado. The
plan incorporates elements that can be found in the contract plans and specifications as
well as the following:
City of Fort Collins Storm Drainage Criteria and Construction Standards
Fort Collins Stormwater Criteria Manual
Urban Drainage and Flood Control District
Urban Storm Drainage Criteria Manual Volume 3 – Best Management Practices
This plan serves as a consolidated document for information on water quality protection
for the subject site and areas immediately adjacent. It should also be noted that this plan is
a living document that will need to be updated and maintained throughout the construction
process. The intent of this plan is to provide the contractor a tool to consolidate records,
logs, permits, applications, etc. as well as guidance on water quality protection
GENERAL LOCATION AND DESCRIPTION
Location
Rigden Farm Filing 17 is a residential facility located in the east one half of Section 29,
Township 7 North, Range 68 west of the 6th principal meridian, in the City of Fort Collins.
The site is bounded by Ziegler Road to the east and William Neal Parkway to the north.
A vicinity map is included as Figure 1, attached.
Description of Property
Rigden Farm Filing 17 is a replat of a portion of the approved Rigden Farm Filing Six
comprising of a total of 9.448 acres. The existing site is vacant. The runoff from the site
currently drains either north to the Foothills Regional Channel or east to the Fossil Creek
Reservoir Inlet Ditch. Slopes on the parcel range from 0.5 to 10 percent. The dominant
soils in this area are the Caruso clay loam described above and the Larimer-Stoneham
complex (soil number 62). This latter soil’s characteristics include medium to rapid runoff
and medium to severe erosion hazard. This soil is classified as Hydrologic Group B.
Other soils found in the southern parcel include Nunn clay loam and Stoneham loam (soil
numbers 73, 74, and 102). The NRCS Soil Hydrologic Group Map is attached as
Appendix B.
The existing site vegetation consists of native grasses and weeds.
CONSTRUCTION ACTIVITY
Description of Construction Activity
The project involves the development of 57 residential single family lots and associated
infrastructure inclusive of water main, sanitary sewer mains, curb, gutter, sidewalk and
asphalt roadways. Flows from the site during construction are directed to existing onsite
detention facilities. Ultimately releases from these detention facilities will reach the Cache-
Le-Poudre River.
There will be no asphalt or concrete batch plants used on this site. All of this material will
be provided by local plants on an as needed basis during construction.
Sequence for Major Activities
The Contractor will be responsible for implementing and maintaining the erosion
and sediment control measures described in the document and the accompanying
design drawings. The Contractor may designate these tasks to certain
subcontractors as he sees fit, but the ultimate responsibility for implementing these
controls and their proper function at each phase of the project remains with the
Contractor. The order of major activities will be as follows:
1. Installation of temporary erosion and sediment control measures.
2. Clear and rough grade for improvements.
3. Construct detention/water quality pond improvements. Construction and
stabilization of the stormwater pond must be completed prior to
establishment of impervious surfaces.
4. Excavate and install improvements including curbing, underground piping
and drainage structures.
5. Final grading the site.
6. Install paving and concrete.
7. Install final vegetation (Seeding and Mulching) and stabilize building pad
areas.
Appendix E shows the Construction Sequence.
EROSION AND SEDIMENT CONTROL
Objectives
The objective of erosion control is to limit the amount of erosion occurring on disturbed
areas until the site is stabilized. The objective of sediment control is to capture the soil
that has been eroded before it leaves the construction site. Despite the use of both erosion
and sediment control measures, it is recognized that some sediment could remain in runoff
leaving the construction site. This should be minimized to the maximum extent
practicable.
Best Management Practices (BMPs) are schedules of activities, prohibitions of practices,
maintenance procedures, and other management practices to prevent or reduce sediment
runoff and pollution of public waters. With regard to construction and erosion and
sediment control, the BMPs can be divided into Structural and Non-Structural Practices.
Structural Practices
Structural BMPs are structural site management practices that will minimize erosion and
sediment transport. Such practices may include silt fences, earth dikes, drainage swales,
sediment traps and basins, inlet protections, and outlet protection. The structural BMPs
that will be utilized on the subject are depicted on the “Drainage and Erosion Control
Plan” and “Drainage Details” included within Appendix E of this report and described in
more detail as follows:
Silt Fence:
A temporary vertical barrier of filter fabric attached to and supported by posts and
entrenched into the ground.
Utilized to intercept sediment from disturbed areas during construction operations.
Used to filter shallow sheet flow.
Typically used along the toe of fills, in transition areas between cut and fills, and adjacent
to streams.
Generally installed prior to or immediately following land-disturbance activity.
Shall be inspected periodically and after each rain or snowfall event and repaired when
necessary. Sediment shall be removed from behind the fence when it accumulates to one-
half the exposed fabric height. Sediments removed must be properly disposed.
Utilized as a temporary feature.
Inlet Protection
A barrier across or around a storm drain drop inlet, a curb inlet, or a culvert inlet.
Utilized to intercept and filter sediment-laden runoff and prevent it from entering storm
drainage systems.
Not to be utilized in place of a sediment-trapping device; used as a secondary control
device.
Do not use where ponded water might flow onto the roadway.
Blocking of the inlet should not be watertight.
Generally installed prior to land-disturbance activity on existing inlets and immediately
after the construction of new inlets.
Shall be inspected periodically and after each rain or snowfall event and repaired when
necessary. Accumulated sediment shall be removed and properly disposed of.
Utilized as a temporary feature.
Water Quality Pond/Temporary Sediment Basins
A small temporary or permanent ponding area formed by excavating below grade and/or
by constructing an earthen embankment with a hard lined spillway.
Utilized to detain sediment-laden runoff from small-disturbed areas to allow sediment to
settle out.
Water Quality Ponds, along with other perimeter controls, shall be installed before any
land disturbance takes place in the drainage area.
Shall be utilized in conjunction with erosion control practices such as temporary seeding,
mulching, diversion dikes, etc. to reduce the amount of sediment flowing into the basin.
Sediment shall be removed from the pond when the wet storage volume is reduced by half.
Sediments removed must be properly disposed.
Full capacity of ponds shall be re-established following final stabilization.
Spillway/outlet should be regularly inspected.
Utilized as a permanent feature.
Outlet Protection
A structurally lined apron (generally with riprap, grouted rip rap, or concrete) placed at
the outlet of pipes or paved channel sections.
Used as an energy dissipation device to prevent scour and erosion at the outlet by reducing
the velocity and energy of concentrated flow.
Shall be installed immediately following the construction of the upstream conveyance
element.
Inspection shall be performed after high flows for scour and dislodged stones. Repairs
shall be made immediately.
Utilized as a permanent feature.
Grading Techniques:
Soil surface roughening, terracing and rounding at tops of cuts, transitions and roadway
ditches to facilitate plant establishment and minimize erosion.
Utilized to temporarily stabilize disturbed areas and protect from wind and water erosion
immediately after grading activities have ceased.
Used as a temporary practice during construction.
Inspection and maintenance must be provided periodically and after each rain or snowfall
event that causes runoff to ensure roughened state is maintained.
Rills developed should be filled and the area re-graded immediately.
Silt fence and any other erosion control measures within the site will become the
responsibility of the Contractor to inspect and maintain. Any existing erosion control
devices that are removed in order to complete the construction of the utilities shall be
replaced immediately following the construction that required its removal unless directed
otherwise by the construction plans. For further information, please refer to the “City of
Fort Collins Storm Drainage Criteria and Construction Standards”.
Non-Structural Practices
Non-Structural BMPs are interim and permanent stabilization practices. Such practices
may include temporary seeding, permanent seeding, mulching, geotextiles, sod
stabilization, vegetative buffer strips, tree protection and preservation of mature
vegetation. Appendix C shows Minimum drill seeding rates for perennial grasses and
various temporary annual grasses. The non-structural BMPs that will be utilized on the
subject site are depicted on the “Drainage and Erosion Control Plan” and “Drainage
Details” included within Appendix E of this report and described in more detail as
follows:
Temporary and Permanent Seeding
Soil preparation, seeding, mulch tackifier and mulching shall be required for all
disturbed areas that are not surfaced.
Temporary seeding shall be provided when a disturbed area will be left in place for
more than thirty (30) days.
Seeding rates and types shall correspond with the rates and types included in
Appendix C of this report.
Seeding shall not be applied when the ground is frozen or during the summer when
moisture is not available.
Seeded areas shall be inspected frequently. If the seeded areas fail to establish, provide
adequate ground coverage or is disturbed, the area should be re-seeded.
Mulching:
Application of plant residues to the soil surface. Typical mulching material includes
certified weed free hay or straw, certified under the Colorado Department of Agriculture
Weed Free Forage Certification Program and inspected as regulated by the Weed Free
Forage Act, Title 35, Article 27.5, CRS and wood cellulose fiber.
Utilized in combination with mulch tackifier for temporary erosion control (i.e., incomplete
slopes, detour slopes, stockpiles).
Utilized in combination with mulch tackifier for temporary erosion control on slopes when
seeding is not allowed due to seasonal constraints.
Used to cover permanent or temporary seed areas. Hydromulch shall not be done in the
presence of free surface water.
Inspect frequently and reapply mulching in areas where the mulching has been loosened or
removed. Mulch tackifier must be applied with additional applications of mulching.
Mulch Takifier
An organic soluble powder adhesive used in the form of a water slurry to adhere native
hay, straw, hydromulch, or seed to a surface and together.
Used to cover disturbances as temporary cover for wind erosion.
Mulch movement indicates poor application and procedure mixture.
Proper application will bond mulch material together and to soil.
Inspect by touching mulch surface to determine if adhesion has occurred.
Maintain Existing Vegetation:
Existing vegetation should be preserved where possible to prevent the migration of
sediment.
Should be inspected regularly.
Establish and maintain buffers.
For further information, please refer to the “City of Fort Collins Storm Drainage Criteria
and Construction Standards”.
Other controls
Stabilized Construction Entrances:
A temporary stabilized layer of aggregate underlined with geotextile and located where
traffic enters or exits the construction site. The structure shall be constructed prior to any
construction activity and maintained daily. As construction progresses, the construction
entrance may require the removal of sediment build up, the addition of new or clean rock
as needed and maintenance of the geotextile material as deemed necessary.
Tracking of Sediment Onto Roads and Streets:
Streets shall be kept clean and free of mud, soil, and construction waste. Street sweeping
or other acceptable methods shall be used to prevent sediment from being washed from the
project site. Streets shall not be washed with water if prohibited by local ordinances.
Control Practices for Wind Erosion:
Wind erosion shall be controlled on the site by watering of the graded areas with a water
truck or hand watered. Installation of additional silt fence or fence screening may be
required as an additional protection. This will be determined as construction progresses.
For further information, please refer to the “City of Fort Collins Storm Drainage Criteria
and Construction Standards”.
MATERIALS MANAGEMENT
Potential Pollution Sources
It is anticipated that this construction project will not utilize any abnormal or atypical
hazardous materials. The construction site will operate much like other commercial
construction projects. The following materials or substances are expected to be present
onsite during construction:
Concrete/Additives/Wastes Cleaning solvents
Detergents Petroleum based products
Paints/Solvents Pesticides
Acids Fertilizers
Solid and construction wastes Sanitary wastes
Soil stabilization additives
Activities on the site that may have an impact on stormwater include the following:
x Equipment and/or vehicle washing
x Fertilizers, chemicals, or other material storage
x Vehicle maintenance or fueling
x On site waste treatment, storage or disposal
x Off-site vehicle tracking
x Loading/unloading areas
x Concrete truck washout
As construction progresses, specific areas shall be designated for vehicle maintenance and
refueling, material and waste storage, construction equipment staging, and bathroom
facilities.
A loading and unloading area will be designated by the onsite construction superintendent.
Spills that occur during loading or unloading should be contained and cleaned up promptly
after the spill is observed. Absorbents should be readily available in case of a spill. For
larger spills, containment of the area is critical. The contractor shall use temporary berms
around the spill to prevent mitigation offsite, prior to cleaning up the spill. Once contained,
the spill cleanup can commence and the material disposed of properly. Care should be
taken to minimize tracking of mud or other debris out of the loading and unloading area.
Should this occur, the area should be cleaned up immediately and additional BMP
measures installed if deemed necessary.
Care shall be taken to minimize damage to existing facilities, and to maintain a safe
construction site. All sub-contractors shall be responsible for the care and up keep of this
area during construction. Management measures and procedures for these facilities are
discussed later in the plan. The location of these facilities shall be marked on the
“Drainage and Erosion Control Plan” located within the Appendix E of this report.
Outdoor storage areas shall be located such that the material is protected from damage by
construction equipment. All material shall be covered with a tarp (or equivalent material)
at the end of each day. Routine maintenance and inspection of the tarp shall be done and
the tarp replaced if damaged. If storage drums or containers are used, the lids shall be
secured and checked daily by the site superintendent. Any damaged containers shall be
replaced as needed.
Pollution Prevention Measures
Pollution prevention measures shall be utilized to prevent construction materials with the
potential of polluting stormwater, such as those listed above, from coming in contact with
runoff. Measures include good housekeeping and proper disposal of construction and
demolition debris, equipment fuel, lubricants, paints and solvents, asphalt, concrete,
topsoil and other materials, as well as controls which prevent sediments from being tracked
off-site by construction vehicles, and proper control of any non-stormwater flows on-site.
As previously stated, Best Management Practices (BMPs) are schedules of activities,
prohibitions of practices, maintenance procedures, and other management practices to
prevent or reduce pollution of public waters. BMPs also control site runoff, spillage or
leaks, sludge or waste disposal, or drainage form raw material storage. With regard to
construction, these may include structural controls and nonstructural practices that are
designed to prevent pollutants form entering water or direct the flow of water away from
potential sources of pollution.
For construction sites, there are three main types of BMPs, those that prevent erosion and
sediment transport, others that prevent pollutants from construction materials from mixing
with stormwater, and those that trap pollutants before they can be discharged. BMPs for
most common construction materials and wastes with greatest potential for adversely
affecting stormwater quality are as follows:
BMPs for Construction Waste:
Select a designated waste collection area onsite.
Provide an adequate number of containers with lids or covers that can be placed over the
containers prior to rainfall.
When possible, locate containers in a covered area.
Arrange for waste collection before containers overflow.
If a container does spill, provide cleanup immediately.
Plan for additional containers and more frequent pickups during the demolition phase of
construction.
Makes sure that construction waste is collected, removed, and disposed of only at
authorized disposal areas.
Check with local solid waste management agency for specific guidance.
BMPs for Hazardous Wastes Disposal
Check with local waste management authorities to determine what the requirements are for
disposing of hazardous materials.
Use the entire product before disposing of the container.
Do not remove the original product label from the container. It contains important
information.
Do not mix products together unless specifically recommended by the manufacturer.
The correct disposal of these products varies with the product utilized. Follow the
manufacturers recommended method, which is often found on the label.
BMPs for Hazardous Products Management
Have equipment to contain and clean up spills of hazardous materials in the vicinity of
where these materials are to be stored or used.
Contain and clean up spills immediately after they occur. Contact State or Local solid
waste regulatory agency concerning information and procedures necessary to treat or
dispose of contaminated soils.
Keep materials in a dry covered area and elevated from the ground.
BMPs for Residual Concrete Disposal
Emptying or wash out of excess concrete may be allowed on site. Excess concrete and
wash water should be disposed of in a manner that prevents contact between these
materials and stormwater discharges from the site.
Residual concrete shall be discharged in specifically designated dike areas, which have
been prepared to prevent contact between the concrete and/or washout and stormwater
discharged from the site.
The hardened residue from the dike areas shall be disposed of in the same manner as other
non-hazardous construction waste materials or may be broke up and utilized as deemed
appropriate by the contractor.
BMPs for Sanitary/Septic Wastes:
Sanitary or septic wastes that are generated onsite should be treated or disposed of in
accordance with State or local requirements.
If self-contained, temporary facilities are utilized, the domestic waste haulers should be
contracted to regularly remove the sanitary and septic wastes and to maintain the facilities
in good working order.
Any facilities to be connected to a sanitary sewer system should be properly hooked to the
sanitary sewer system to prevent illicit discharges.
Untreated, raw sewage should never be discharged or buried onsite.
Contact local government and State regulatory agencies to ensure the compliance with
State or local requirements.
If sewage is being discharged to the sanitary sewer, the local treatment works authority
should be contacted.
BMPs for pesticides:
Store pesticides in a dry covered area and elevate above the ground.
Provide curbs or dikes to contain possible spills.
Have measures on site to contain and clean up spills.
Strictly follow recommended application rates and recommended application methods.
Only a Certified Applicator shall use pesticides.
BMPs for petroleum products:
Fueling operations shall occur in a designated area.
Have equipment to contain and clean up petroleum spills in fuel storage areas or on board
maintenance and fueling vehicles.
Where possible, store petroleum products and fuel vehicles in covered areas and construct
dikes to contain spills.
Contain and clean up spills immediately.
Use preventive maintenance for onsite equipment such as checking for and fixing gas and
oil leaks in construction vehicles on a regular basis.
Follow proper procedure for the handling and application of asphaltic substances.
Oversee all filling operations.
Fueling equipment and area shall be fenced and valving locked to prevent vandalism.
BMPs for Fertilizers/Detergents:
Limit the application of fertilizers to the minimum area and minimum recommended
amounts.
Reduce exposure of nutrients to storm water runoff by working the fertilizer deep into the
soil.
Apply fertilizer more frequently, but at lower application rates.
Hydro seeding where lime and fertilizers are applied to the ground surface in one
application should be limited, where possible.
Limit the use of detergents onsite: wash water containing detergents should not be
discharged to the storm system.
Implement good erosion and sediment control to help reduce the amount of fertilizers that
can leave the site as well as sediments.
Fertilizers and detergents shall be stored in dry and covered area and elevated above the
ground.
Berming shall be provided around the storage area to avoid contact with stormwater
runoff.
Spill Management
Construction site supervisors should create and adopt a spill control plan that includes
measures and procedures to stop the source of the spill, contain the spill, clean up, and
disposal of contaminated materials. Key personnel shall be identified and trained to be
responsible for spill prevention and control. The following measures would be appropriate
for a spill prevention and response plan:
Store and handle materials to prevent spills.
o Tightly seal containers.
o Make sure all containers are clearly labeled.
o Stack containers neatly and securely
o Where possible, store containers on pallets in a covered area.
Reduce stormwater contact if there is a spill.
o Have cleanup procedures clearly posted.
o Have cleanup materials readily available.
o Contain any liquid.
o Stop the source of the spill.
o Cover spill with absorbent material.
Dispose of contaminated materials according to manufacturer’s instructions or according
to State or local requirements.
Identify personnel responsible for responding to a spill of toxic or hazardous materials.
o Provide personnel spill response training.
o Post names of spill response personnel.
Keep the spill area well ventilated.
If necessary, use a private firm that specializes in cleanup.
Additionally, records of spills, leaks, or overflows that result in the discharge of pollutants
must be documented and maintained. Information such as the time and date, weather
conditions, reasons for the spill, etc., shall be recorded for all occurrences. Some spills
may need to be reported to the Division of Water Quality immediately. Specifically, a
release of any chemical, oil, petroleum product, sewage, etc., which may enter waters of
the State of Colorado (which include surface water, ground water and dry gullies or storm
sewers leading to surface water) must be reported. The Division’s toll-free 24-hour
environmental emergency spill reporting line is 1-877-518-5608.
Non-Storm Water Components of Discharge
Non-storm water discharges will be eliminated or reduced to the extent feasible. This plan
does not cover construction dewatering. Pumping or draining groundwater that has
infiltrated into an excavation requires a general permit for construction dewatering,
regardless of the size of the project. Stormwater that mixes with groundwater in an
excavation is also subject to the controls in the general permit for Construction
Dewatering.
No materials shall be discharged in quantities that will have an adverse effect on the
receiving waters. The measures listed below will be implemented to achieve these
objectives:
Proper and lawful disposal of all waste materials.
Control any spills and leaks that may occur and clean up (mitigate).
Use of designated areas for equipment repair and cleaning.
Careful application of irrigation water.
INSPECTION AND MAINTENANCE
A site inspection of all erosion control facilities shall be conducted at least once every 7
days and immediately following any significant precipitation or snowmelt event that could
cause surface erosion. The inspection must determine if there is evidence of, or the
potential for, pollutants entering the drainage system, and BMPs should be reviewed to
determine if they still meet the design and operational criteria in the SWMP and that they
continue to adequately control pollutants at the site. The construction site perimeter,
disturbed areas, discharge points and areas used for material storage that are exposed to
precipitation shall be inspected for evidence of, or the potential for, pollutants entering the
storm drainage system. Erosion and sediment control measures identified in this SWMP
and on the construction plans shall be observed to ensure that they are operating correctly.
Any other structural BMPs that may require maintenance, such as secondary containment
around fuel tanks or the conditions of spill response kits, shall also be inspected.
The project site and the adjacent streets impacted by the construction shall be kept neat,
clean and free of debris. The control measures and facilities will be maintained in good
working order. Any items that are not functioning properly or are inadequate will be
promptly repaired or upgraded. The site will be inspected by responsible personnel who
are familiar with the site. Inspection and monitoring will follow the procedures outlined
below:
Minimum Monitoring(Inspection) Requirements:
Inspections of the construction site shall be conducted by the contractor (or
agent) every seven (7) days and within twenty four (24) hours of a storm
event.
The qualified site superintendent familiar with this SWMP/BMP shall perform
the inspections.
Certify the site is in compliance with the SWMP/BMP and the permit by:
o Ensuring that areas contributing significant storm water discharges
related to the construction activities have been identified.
o Evaluating preventive measures required by the SWMP/BMP to insure
they are adequate and have been properly implemented.
o Inspecting points of discharge from the site to check for signs of
pollutant discharge.
o Determining if additional control measures will need to be
implemented.
o Updating this SWMP if new measures are implemented or existing
controls are deleted.
Based on the results of the inspection, the description of potential pollutant
sources, and the pollution prevention and control measures that are identified
within this plan shall be revised and modified as appropriate as soon as practicable
after such inspection. Modifications to control measures shall be implemented in a
timely manner, but in no case more than seven (7) calendar days after the
inspection.
The operator shall keep a record of inspections. Uncontrolled releases of mud or
muddy water or measurable quantities of sediment found off the site shall be
recorded with a brief explanation as to the measures taken to prevent future
releases as well as any measure taken to clean up the sediment that has left the site.
This record shall be made available to the Division of Water Quality upon request.
This record shall also include the following information:
Dates
Names of inspectors
Purpose of inspection i.e.-spill event, leakage of hazardous materials, inclement
weather, etc.
An assessment of the entire property as related to SWMP issues
An evaluation of onsite BMPs
Action items needed to assure the site continually complies with the SWMP guidelines
Documentation of any suggested changes to the plan due to field conditions
Training events
All records related to this plan including inspection logs shall be maintained by the
administrator for a minimum of 3 years from the date that the site is finally stabilized
Uncontrolled releases of mud or muddy water or measurable quantities of sediment
found off the site shall be recorded on the Inspection Report with a brief explanation
as to the measures taken to prevent future releases as well as any measure taken to
clean up the sediment that has left the site.
All temporary and permanent erosion and sediment control facilities shall be maintained
and repaired as needed to ensure continued performance of their intended function. Silt
fences will require periodic replacement. Sediment traps and sediment basins shall be
cleaned when accumulated sediments equal approximately one-half of trap storage
capacity.
FINAL STABILIZATION AND LONG TERM STORMWATER
MANAGEMENT
Permanent stabilization will be achieved by establishing a vegetative cover on all disturbed
areas. The vegetative cover will be perennial grass, unless otherwise specified on the
Landscape Plan. Appendix C shows Minimum drill seeding rates for perennial grasses
and various temporary annual grasses. Soil amendments prior to installation of plant
materials, shall consist of thoroughly loosening the soil to a minimum depth of eight (8”)
inches; incorporation of a compost, peat or aged manure material to a minimum depth of
six (6”) inches by tilling, discing or other suitable method. The rate of soil amendment
material shall be at least three (3) cubic yards of amendment per on thousand (1000)
square foot of landscaped area. Final stabilization shall be considered complete when all
paving and landscaping are completed and the vegetative cover has been established with a
density of at least 70 percent of pre-disturbance levels (including shrubs and trees).
Management of storm water after completion of construction will be accomplished by
utilizing the practices listed below.
Upon completion of construction, the site shall be inspected to ensure that all
equipment, waste materials, and debris have been removed.
The site will be inspected to make certain that all graded surfaces have been
landscaped or seeded with an appropriate ground cover.
All inlet protection, perimeter fencing, and all other control practices and
measures that are to remain after completion of construction will be inspected
to ensure their proper function.
The water quality ponds have been returned to full capacity and the outlet
structures have been checked to ensure they are unclogged and in working
order.
The property owner/contractor shall be responsible for maintaining the storm water
controls in good working order and shall also be responsible for the costs incurred until
such time as they are accepted by the City of Fort Collins or no longer required, including
removal of measures.
SWMP ADMINISTRATOR
The SWMP administrator shall be the individual(s), position, or title who is responsible
for developing, implementing, maintaining, and revising the erosion and sediment control
plans. The activities and responsibilities of the administrator shall address all aspects of
the facility’s SWMP.
CONCLUSION
This Stormwater Management Plan has been prepared in accordance with the criteria and
methods described in the “State of Colorado General Permit Application and Stormwater
Management Plan Guidance for Stormwater Discharges Associated with Construction
Activity”, and “Fort Collins Stormwater Criteria Manual”
REFERENCES:
x Urban Storm Drainage Criteria Manual, Urban Drainage Flood Control District (Rev.
Nov., 2010)
x Fort Collins Stormwater Criteria Manual, City of Fort Collins (Dec., 2011)
x City of Fort Collins Storm Drainage Criteria, City of Fort Collins
x Soil Survey of Larimer County Area, Colorado, Natural Resources Conservation Service,
April 30, 2009
Appendix A – Vicinity Map
RIGDEN FARM FILING SEVENTEEN
A REPLAT OF PORTIONS OF RIGDEN FARM FILING SIX,
LOCATED IN THE EAST HALF OF SECTION 29, TOWNSHIP 7 NORTH,
RANGE 68 WEST OF THE 6TH P.M. CITY OF FT. COLLINS,
COUNTY OF LARIMER, STATE OF COLORADO
X:\3960000.all\3968300\Drawings\Working Dwgs\RIG 1.dwg, 8/16/2013 9:37:39 AM, PDF-XChange 3.0
Appendix B – Soil Hydrologic Group Map
8
Custom Soil Resource Report
Soil Map
4487820 4487910 4488000 4488090 4488180 4488270 4488360 4488450 4488540
4487820 4487910 4488000 4488090 4488180 4488270 4488360 4488450 4488540
497880 497970 498060 498150 498240 498330 498420
497880 497970 498060 498150 498240 498330 498420
40° 32' 52'' N
105° 1' 31'' W
40° 32' 52'' N
105° 1' 6'' W
40° 32' 27'' N
105° 1' 31'' W
40° 32' 27'' N
105° 1' 6'' W
N
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
0 150 300 600 900
Feet
0 50 100 200 300
Meters
Map Scale: 1:3,790 if printed on A portrait (8.5" x 11") sheet.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
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
Map Unit Legend
Larimer County Area, Colorado (CO644)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
22 Caruso clay loam, 0 to 1 percent
slope
38.1 65.0%
35 Fort Collins loam, 1 to 3 percent
slopes
0.3 0.5%
53 Kim loam, 1 to 3 percent slopes 3.0 5.1%
62 Larimer-Stoneham complex, 3 to
10 percent slopes
8.9 15.2%
74 Nunn clay loam, 1 to 3 percent
slopes
0.2 0.4%
102 Stoneham loam, 3 to 5 percent
slopes
8.0 13.7%
Totals for Area of Interest 58.5 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the soils
or miscellaneous areas in the survey area. The map unit descriptions, along with the
maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the landscape,
however, the soils are natural phenomena, and they have the characteristic variability
of all natural phenomena. Thus, the range of some observed properties may extend
beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic
class rarely, if ever, can be mapped without including areas of other taxonomic
classes. Consequently, every map unit is made up of the soils or miscellaneous areas
for which it is named and some minor components that belong to taxonomic classes
other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They generally
are in small areas and could not be mapped separately because of the scale used.
Some small areas of strongly contrasting soils or miscellaneous areas are identified
by a special symbol on the maps. If included in the database for a given area, the
contrasting minor components are identified in the map unit descriptions along with
some characteristics of each. A few areas of minor components may not have been
observed, and consequently they are not mentioned in the descriptions, especially
Custom Soil Resource Report
10
where the pattern was so complex that it was impractical to make enough observations
to identify all the soils and miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the usefulness
or accuracy of the data. The objective of mapping is not to delineate pure taxonomic
classes but rather to separate the landscape into landforms or landform segments that
have similar use and management requirements. The delineation of such segments
on the map provides sufficient information for the development of resource plans. If
intensive use of small areas is planned, however, onsite investigation is needed to
define and locate the soils and miscellaneous areas.
An identifying symbol precedes the map unit name in the map unit descriptions. Each
description includes general facts about the unit and gives important soil properties
and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major horizons
that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity,
degree of erosion, and other characteristics that affect their use. On the basis of such
differences, a soil series is divided into soil phases. Most of the areas shown on the
detailed soil maps are phases of soil series. The name of a soil phase commonly
indicates a feature that affects use or management. For example, Alpha silt loam, 0
to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps. The
pattern and proportion of the soils or miscellaneous areas are somewhat similar in all
areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present or
anticipated uses of the map units in the survey area, it was not considered practical
or necessary to map the soils or miscellaneous areas separately. The pattern and
relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha-
Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas that
could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion of
the soils or miscellaneous areas in a mapped area are not uniform. An area can be
made up of only one of the major soils or miscellaneous areas, or it can be made up
of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil material
and support little or no vegetation. Rock outcrop is an example.
Custom Soil Resource Report
11
22
Custom Soil Resource Report
Map—Hydrologic Soil Group (Rigden Farm Filing 17)
4487820 4487910 4488000 4488090 4488180 4488270 4488360 4488450 4488540
4487820 4487910 4488000 4488090 4488180 4488270 4488360 4488450 4488540
497880 497970 498060 498150 498240 498330 498420
497880 497970 498060 498150 498240 498330 498420
40° 32' 52'' N
105° 1' 31'' W
40° 32' 52'' N
105° 1' 6'' W
40° 32' 27'' N
105° 1' 31'' W
40° 32' 27'' N
105° 1' 6'' W
N
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
0 150 300 600 900
Feet
0 50 100 200 300
Meters
Map Scale: 1:3,790 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
Table—Hydrologic Soil Group (Rigden Farm Filing 17)
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
22 Caruso clay loam, 0 to 1
percent slope
C 38.1 65.0%
35 Fort Collins loam, 1 to 3
percent slopes
B 0.3 0.5%
53 Kim loam, 1 to 3 percent
slopes
B 3.0 5.1%
62 Larimer-Stoneham
complex, 3 to 10
percent slopes
B 8.9 15.2%
74 Nunn clay loam, 1 to 3
percent slopes
C 0.2 0.4%
102 Stoneham loam, 3 to 5
percent slopes
B 8.0 13.7%
Totals for Area of Interest 58.5 100.0%
Rating Options—Hydrologic Soil Group (Rigden Farm Filing 17)
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Custom Soil Resource Report
24
Appendix C – Temporary and Permanent Seed Mix Table
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
Season
b
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 Mix
c
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
Season
b
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 wheatgrassd
Agropyron cristatum
'Ephriam' Cool Sod 175,000 1.5
Oahe Intermediate wheatgrass Agropyron intermedium
'Oahe' Cool Sod 115,000 5.5
Vaughn sideoats gramae
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.
Appendix D – Permits and Applications
For Agency Use Only
Permit Number Assigned
COR03-
Date Received /_ /_
Month Day Year
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-P-B2
Denver, Colorado 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.
PERMIT INFORMATION
Reason for Application: NEW CERT
RENEW CERT EXISTING CERT #
Applicant is: Property Owner Contractor/Operator
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Appendix E – Drainage and Erosion Control Plan and Details
SHEET 8
THIS SHEET
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
CityDate Engineer
WaterDate & Wastewater Utility
StormwaterDate Utility
ParksDate & Recreation
TrafficDate Engineer Date
EnvironmentalDate Planner
EnvironmentalDate Planner
KEY MAP
SHEET 6
Know what's
"B"-TYPE B LOT DRAINAGE
NO SCALE
TRACT C
SECTION E-E
PLAN VIEW
ISOMETRIC VIEW
LEGEND
NOTES:
E
E
PEDESTRIAN/BIKE TRAIL
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SHEET 7
SHEET 8
THIS SHEET
WILLIAM NEAL PARKWAY
LEGEND
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
CityDate Engineer
WaterDate & Wastewater Utility
StormwaterDate Utility
ParksDate & Recreation
TrafficDate Engineer Date
EnvironmentalDate Planner
EnvironmentalDate Planner
KEY MAP
TRACT A
REAR YARD
SECTION C-C
SECTION D-D
PLAN VIEW ISOMETRIC VIEW
"A"-TYPE A LOT DRAINAGE
NO SCALE
NOTES:
D
D
C
C
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SHEET 7
THIS SHEET
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
CityDate Engineer
WaterDate & Wastewater Utility
StormwaterDate Utility
ParksDate & Recreation
TrafficDate Engineer Date
EnvironmentalDate Planner
EnvironmentalDate Planner
KEY MAP
SHEET 6
DOUBLE INLET
PROFILE
DOUBLE TYPE 13
PROFILE LEGEND
NOTES:
(SEE PLAN SHEET 3 FOR LOCATION)
(SEE PLAN SHEET 3 FOR LOCATION)
H:1"=50'
V:1"=5'
H:1"=50'
V:1"=5'
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'SRWXVYGXMSR%GXMZMX] JSVXLIIRXMVIX]SJXLIGSRWXVYGXMSRWMXITVSNIGXHIWGVMFIHERHETTPMIHJSVYRXMPWYGLXMQIEWXLIETTPMGEXMSRMWEQIRHIHSVXLI
GIVXMJMG SRMWXVERWJIVVIHMREGXMZEXIHSVI\TMVIH
<<
7MKREXYVISJ0IKEPP]6IWTSRWMFPI4IVWSR
WYFQMWWMSRQYWXMRGPYHISVMKMREP WMKREXYVI (EXI7MKRIH
2EQI
TVMRXIH 8MXPI
(3238-2'09()%'34=3*8,)78361;%8)61%2%+)1)2840%2
(3238-2'09()4%=1)28 %2-2:3-');-00&)7)28%*8)68,)')68-*-'%8-32-7-779)(
TEKISJVIZMWIH%TVMP
EGVIW
%VIESJTVSNIGXWMXIXSYRHIVKSHMWXYVFERGI
EGVIW
2SXI EWMHIJVSQGPIEVMRKKVEHMRKERHI\GEZEXMSREGXMZMXMIWHMWXYVFIHEVIEWEPWSMRGPYHIEVIEWVIGIMZMRK
SZIVFYVHIR
IKWXSGOTMPIW
HIQSPMXMSREVIEWERHEVIEW[MXLLIEZ]IUYMTQIRXZILMGPIXVEJJMGERHWXSVEKI
XLEXHMWXYVFI\MWXMRKZIKIXEXMZIGSZIV
8SXEPHMWXYVFIHEVIESJ0EVKIV'SQQSR4PERSJ(IZIPSTQIRXSV7EPIMJETTPMGEFPI
MIXSXEPMRGPYHMRKEPPTLEWIWJMPMRKWPSXWERHMRJVEWXVYGXYVIRSXGSZIVIHF]XLMWETTPMGEXMSR
4VSZMHIFSXLXLIXSXEPEVIESJXLIGSRWXVYGXMSRWMXIERHXLIEVIEXLEX[MPPYRHIVKSHMWXYVFERGIMREGVIW 2SXI EWMHI
JVSQGPIEVMRKKVEHMRKERHI\GEZEXMSREGXMZMXMIWHMWXYVFIHEVIEWEPWSMRGPYHIEVIEWVIGIMZMRKSZIVFYVHIR
IK
WXSGOTMPIW
HIQSPMXMSREVIEWERHEVIEW[MXLLIEZ]IUYMTQIRXZILMGPIXVEJJMGERHWXSVEKIXLEXHMWXYVFI\MWXMRK
ZIKIXEXMZIGSZIV
WIIGSRWXVYGXMSREGXMZMX]HIWGVMTXMSRYRHIVXLI%440-'%&-0-8=WIGXMSRSRTEKI
-JXLITVSNIGXMWTEVXSJE PEVKIVGSQQSRTPERSJHIZIPSTQIRXSVWEPI
WIIXLIHIJMRMXMSRYRHIVXLI%440-'%&-0-8=
WIGXMSRSRTEKI
XLIHMWXYVFIHEVIESJXLIXSXEPTPERQYWXEPWSFIMRGPYHIH
F. NATURE OF CONSTRUCTION ACTIVITY
'LIGOXLIETTVSTVMEXIFS\
W
SVTVSZMHIEFVMIJHIWGVMTXMSRXLEXMRHMGEXIWXLIKIRIVEPREXYVISJXLIGSRWXVYGXMSREGXMZMXMIW
8LI JYPPHIWGVMTXMSRSJEGXMZMXMIWQYWXFIMRGPYHIHMRXLI7XSVQ[EXIV1EREKIQIRX4PER
7MRKPI*EQMP]6IWMHIRXMEP(IZIPSTQIRX
1YPXM*EQMP]6IWMHIRXMEP(IZIPSTQIRX
'SQQIVGMEP(IZIPSTQIRX
3MPERH+EW4VSHYGXMSRERHSV)\TPSVEXMSR
MRGPYHMRKTEHWMXIWERHEWWSGMEXIHMRJVEWXVYGXYVI
,MKL[E]6SEH(IZIPSTQIRX
RSXMRGPYHMRKVSEH[E]WEWWSGMEXIH[MXLGSQQIVGMEPSVVIWMHIRXMEPHIZIPSTQIRX
3XLIV (IWGVMTXMSR
G. ANTICIPATED CONSTRUCTION SCHEDULE
'SRWXVYGXMSR7XEVX(EXI CCCCCCCCCCCCCCCCCCCCCCCCCCC*MREP7XEFMPM^EXMSR(EXI CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
'SRWXVYGXMSR7XEVX(EXI8LMWMWXLIHE]]SYI\TIGXXSFIKMRKVSYRHHMWXYVFMRKEGXMZMXMIWMRGPYHMRKKVYFFMRKWXSGOTMPMRKI\GEZEXMRK
HIQSPMXMSRERHKVEHMRKEGXMZMXMIW
*MREP7XEFMPM^EXMSR(EXIMRXIVQWSJTIVQMXGSZIVEKIXLMWMW[LIRXLIWMXIMWJMREPP]WXEFMPM^IH8LMWQIERWXLEXEPPKVSYRHWYVJEGI
HMWXYVFMRKEGXMZMXMIWEXXLIWMXILEZIFIIRGSQTPIXIHERHEPPHMWXYVFIHEVIEWLEZIFIIRIMXLIVFYMPXSRTEZIHSVEYRMJSVQZIKIXEXMZI
GSZIVLEWFIIRIWXEFPMWLIH[MXLERMRHMZMHYEPTPERXHIRWMX]SJEXPIEWXTIVGIRXSJTVIHMWXYVFERGIPIZIPW 4IVQMXGSZIVEKIQYWXFI
QEMRXEMRIHYR PXLIWMXIMW REPP]WXEFMPM^IH )ZIRMJ]SYEVISRP]HSMRKSRITEVXSJXLITVSNIGXXLIIW QEXIH REPWXEFMPM^E SR
HEXIQYWXFIJSVXLISZIVEPPTVSNIGX-JTIVQMXGSZIVEKIMWWXMPPVIUYMVIHSRGI]SYVTEVXMWGSQTPIXIHXLITIVQMXGIVXMJMGEXMSRQE]FI
XVERWJIVVIHSVVIEWWMKRIHXSERI[VIWTSRWMFPIIRXMX]
W
H. RECEIVING WATERS (-JHMWGLEVKIMWXSEHMXGLSVWXSVQWI[IVMRGPYHIXLIREQISJXLIYPXMQEXIVIGIMZMRK[EXIVW
-QQIHMEXI6IGIMZMRK;EXIV
W
9PXMQEXI6IGIMZMRK;EXIV
W
-HIRXMJ]XLIVIGIMZMRK[EXIVSJXLIWXSVQ[EXIVJVSQ]SYVWMXI6IGIMZMRK[EXIVWEVIER][EXIVWSJXLI7XEXISJ'SPSVEHS8LMWMRGPYHIW
EPP[EXIVGSYVWIWIZIRMJXLI]EVIYWYEPP]HV]-JWXSVQ[EXIVJVSQXLIGSRWXVYGXMSRWMXIIRXIVWEHMXGLSVWXSVQWI[IVW]WXIQMHIRXMJ]
XLEXW]WXIQERHMRHMGEXIXLIYPXMQEXIVIGIMZMRK[EXIVJSVXLIHMXGLSVWXSVQWI[IV 2SXI EWXSVQ[EXIVHMWGLEVKITIVQMXHSIWRSX
EPPS[EHMWGLEVKIMRXSEHMXGLSVWXSVQWI[IVW]WXIQ[MXLSYXXLIETTVSZEPSJXLIS[RIVSTIVEXSVSJXLEXW]WXIQ
TEKISJ VIZMWIH%TVMP
GLIGOFIPS[
%HHTEKIWMJRIGIWWEV]
6IWTSRWMFPI4SWMXMSR
8MXPI
'YVVIRXP],IPH&]
4IVWSR
8IPITLSRI2S C
IQEMPEHHVIWW
3VKERM^EXMSR
1EMPMRK%HHVIWW
'MX] C 7XEXI >MT
4VIXVIEXQIRX
'SSVHMREXSV
)RZMVSRQIRXEP'SRXEGX
&MSWSPMHW6IWTSRWMFPI
4EVX]
4VSTIVX]3[RIV
-RWTIG SR*EGMPMX]'SRXEGX
'SRWYPXERX
'SQTPMERGI'SRXEGX
7XSVQ[EXIV1746IWTSRWMFPI
4IVWSR
7XSVQ[EXIV%YXLSVM^IH
6ITVIWIRXEXMZI
3XLIV
B. Permitted Project/Facility Information
Project/Facility Name
Street Address or cross streets
XL
%ZIERH
XL
%WXVIIXREQI[MXLSYXEREHHVIWW
MRXIVWIGXMSRQMPIQEVOIVSVSXLIVMHIRXMJ]MRKMRJSVQEXMSRHIWGVMFMRKXLIPSGEXMSRSJXLITVSNIGXMWRSXEHIUYEXI*SV PMRIEVTVSNIGXW
XLIVSYXISJXLITVSNIGXWLSYPHFIHIWGVMFIHEWFIWXEWTSWWMFPI[MXLXLIPSGEXMSRQSVIEGGYVEXIP]MRHMGEXIHF]EQET
City, Zip Code County
Facility Latitude/Longitude (approximate center of site to nearest 15 seconds using one of
following formats
001A Latitude . Longitude . (e.g., 39.703°, 104.933°
degrees (to 3 decimal places) degrees (to 3 decimal places)
or
001A Latitude º " Longitude º " (e.g., 39°46'11"N, 104°53'11"W)
degrees minutes seconds degrees minutes seconds
*SVXLIETTVS\MQEXIGIRXIVTSMRXSJXLITVSTIVX]XSXLIRIEVIWXWIGSRHW8LIPEXMXYHIERHPSRKMXYHIQYWXFITVSZMHIHEW
IMXLIVHIKVIIWQMRYXIWERHWIGSRHWSVMRHIGMQEPHIKVIIW[MXLXLVIIHIGMQEPTPEGIW8LMWMRJSVQEXMSRQE]FISFXEMRIHJVSQ
EZEVMIX]SJWSYVGIWMRGPYHMRK
7YVZI]SVWSVIRKMRIIVWJSVXLITVSNIGXWLSYPHLEZISVFIEFPIXSGEPGYPEXIXLMWMRJSVQEXMSR
)4%QEMRXEMRWE [IFFEWIHWMXMRKXSSPEWTEVXSJXLIMV8S\MG6IPIEWI-RZIRXSV]TVSKVEQXLEXYWIWMRXIVEGXMZIQETWERH
EIVMEPTLSXSKVETL]XSLIPTYWIVWKIXPEXMXYHIERHPSRKMXYHI8LIWMXMRKXSSPGERFIEGGIWWIHEX
[[[ITEKSZXVMVITSVXWM RKCXSSPMRHI\LXQ
97+ISPSKMGEP7YVZI]XSTSKVETLMGEPQET
W
EZEMPEFPIEXEVIEQETWXSVIW
9WMRKE +PSFEP4SWM SRMRK7]WXIQ
+47
YRMX XSSFXEMREHMVIGXVIEHMRK
XLIPEXMXYHIPSRKMXYHIVIUYMVIHEFSZIMWRSXXLIHMVIGXMSREPHIKVIIWQMRYXIWERHWIGSRHWTVSZMHIHSREWMXIPIKEP
HIWGVMTXMSRXSHIJMRITVSTIVX]FSYRHEVMIW
C. MAP (Attachment) If no map is submitted, the permit will not be issued.
1ET %XXEGLEQETXLEXMRHMGEXIWXLIWMXIPSGEXMSRERHXLEX'0)%60=WLS[WXLIFSYRHEVMIWSJXLIEVIEXLEX[MPPFI
HMWXYVFIH 1ETWQYWXFI RSPEVKIV XLER\MRGLIW
D. LEGAL DESCRIPTION
0IKEPHIWGVMT SR -JWYFHMZMHIHTVSZMHIXLIPIKEPHIWGVMTXMSRFIPS[SVMRHMGEXI XLEXMXMWRSXETTPMGEFPI
HSRSX WYTTP]
8S[RWLMT6ERKI7IGXMSRSVQIXIWERHFSYRHWHIWGVMTXMSRSJWMXI
7YFHMZMWMSR
W
0SX
W
&PSGO
W
36
2SXETTPMGEFPI
WMXILEWRSXFIIRWYFHMZMHIH
TEKISJ VIZMWIH%TVMP
MIEYXLSVM^IHEKIRX XLITIVWSRSVTSWMXMSREYXLSVM^IHXS WMKRERHGIV J]VITSVXW VIUYMVIH
F] XLI(MZMWMSR MRGPYHMRK (MWGLEVKI1SRMXSVMRK6ITSVXW W%RRYEP6ITSVXW'SQTPMERGI7GLIHYPIWYFQMXXEPW
ERHSXLIVMRJSVQEXMSRVIUYIWXIHF]XLI(MZMWMSR 8LI(MZMWMSR[MPPXVERWQMXTVITVMRXIHVITSVXW
MI W
XSXLMWTIVWSR
-J QSVIXLERSRITPIEWIEHHEHHMXMSREPTEKIW 7EQI%W
4IVQMXXII
6IWTSRWMFPI4SWMXMSR
8MXPI
'YVVIRXP],IPH&]
4IVWSR
8IPITLSRI2S C
IQEMPEHHVIWW
3VKERM^EXMSR
1EMPMRK%HHVIWW
'MX] C 7XEXI >MT
4IV6IKYP SR 61 %PPVITSVXWVIUYMVIHF]TIVQMXWERHSXLIVMRJSVQEXMSRVIUYIWXIHF]XLI(MZMWMSRWLEPPFIWMKRIHF]
XLITIVQMXXIISVF]EHYP]EYXLSVM^IHVITVIWIRXEXMZISJXLEXTIVWSR%TIVWSRMWEHYP]EYXLSVM^IHVITVIWIRXEXMZISRP]MJ
M
8LIEYXLSVM^EXMSRMWQEHIMR[VMXMRKF]XLITIVQMXXII
MM
8LIEYXLSVM^EXMSRWTIGMJMIWIMXLIVERMRHMZMHYEPSVETSWMXMSRLEZMRKVIWTSRWMFMPMX]JSVXLISZIVEPPSTIVEXMSRSJXLI
VIKYPEXIHJEGMPMX]SVEGXMZMX]WYGLEWXLITSWMXMSRSJTPERXQEREKIVSTIVEXSVSJE[IPPSVE[IPPJMIPHWYTIVMRXIRHIRX
TSWMXMSRSJIUYMZEPIRXVIWTSRWMFMPMX]SVERMRHMZMHYEPSVTSWMXMSRLEZMRKSZIVEPPVIWTSRWMFMPMX]JSVIRZMVSRQIRXEPQEXXIVW
JSVXLIGSQTER]
%HYP]EYXLSVM^IHVITVIWIRXEXMZIQE]XLYWFIIMXLIVE REQIHMRHMZMHYEP SVER]MRHMZMHYEPSGGYT]MRKE
REQIHTSWM SR
ERH
MMM
8LI[VMXXIREYXLSVM^EXMSRMWWYFQMXXIHXSXLI(MZMWMSR
3) 7-8)'328%'8 PSGEPGSRXEGXJSVUYIWXMSRWVIPEXMRKXSXLIJEGMPMX]
HMWGLEVKIEYXLSVM^IHF]XLMWTIVQMX
JSVXLIJEGMPMX]
7EQI%W
4IVQMXXII
6IWTSRWMFPI4SWMXMSR
8MXPI
'YVVIRXP],IPH&]
4IVWSR
8IPITLSRI2S C
IQEMPEHHVIWW
3VKERM^EXMSR
1EMPMRK%HHVIWW
'MX] C 7XEXI >MT
4
&-00-2+'328%'8 MJHMJJIVIRXXLERXLITIVQMXXII
6IWTSRWMFPI4SWMXMSR
8MXPI
'YVVIRXP],IPH&]
4IVWSR
8IPITLSRI2S C
IQEMPEHHVIWW
3VKERM^EXMSR
1EMPMRK%HHVIWW
'MX] C 7XEXI >MT
4EKISJ VIZMWIH%TVMP
-JQSVIXLERSRITPIEWIEHHEHHMXMSREPTEKIW
36+%2->%8-32*361%02%1)
1) 4)61-88)) XLITIVWSR EYXLSVM^IHXSWMKRERHGIV J] XLITIVQMXETTPMGEXMSR 8LMWTIVWSRVIGIMZIWEPP
TIVQMXGSVVIWTSRHIRGIWERHMW PIKEPP]VIWTSRWMFPI JSVGSQTPMERGI[MXLXLITIVQMX
6IWTSRWMFPI4SWMXMSR
8MXPI
'YVVIRXP],IPH&]
4IVWSR
8IPITLSRI2S C
IQEMPEHHVIWW
3VKERM^EXMSR
1EMPMRK%HHVIWW
'MX] C 7XEXI >MT
8LMWJSVQQYWXFIWMKRIHF]XLI4IVQMXXII
PMWXIHMRMXIQ
XSFIGSRWMHIVIHGSQTPIXI
4IV6IKYP SR 61-REPPGEWIWMXWLEPPFIWMKRIHEWJSPPS[W
E
-RXLIGEWISJGSVTSVEXMSRWF]EVIWTSRWMFPIGSVTSVEXISJJMGIV *SVXLITYVTSWIWSJXLMWWIGXMSRXLIVIWTSRWMFPI
GSVTSVEXISJJMGIVMWVIWTSRWMFPIJSVXLISZIVEPPSTIVEXMSRSJXLIJEGMPMX]JVSQ[LMGLXLIHMWGLEVKIHIWGVMFIHMRXLI
ETTPMGEXMSRSVMKMREXIW
F
-RXLIGEWISJETEVXRIVWLMTF]EKIRIVEPTEVXRIV
G
-RXLIGEWISJEWSPITVSTVMIXSVWLMTF]XLITVSTVMIXSV
H
-RXLIGEWISJEQYRMGMTEPWXEXISVSXLIVTYFPMGJEGMPMX]F]IMXLIVETVMRGMTEPI\IGYXMZISJJMGIVSVVEROMRKIPIGXIHSJJMGMEP
TEKISJ VIZMWIH%TVMP
Survey Area Data: Version 7, May 1, 2009
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—Nov 18,
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.
Custom Soil Resource Report
23
the version date(s) listed below.
Soil Survey Area: Larimer County Area, Colorado
Survey Area Data: Version 7, May 1, 2009
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—Nov 18,
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.
Custom Soil Resource Report
9