HomeMy WebLinkAboutBELLA VIRA FILING 2 - MJA/FDP - FDP140001 - REPORTS - DRAINAGE REPORT (3)1501 Academy Ct. Ste. 203 Fort Collins, Colorado 80524 (970) 530-4044
Stormwater Management Plan
(Erosion Control Report)
Bella Vira Subdivision
Filing Two
Fort Collins, Collins , CO
Prepared for:
Bella Vira Town Homes Inc.
1313 Fairway Five Drive
Fort Collins, CO 80525
February 12, 2014
1501 Academy Ct. Ste. 203 Fort Collins, Colorado 80524 (970) 530-4044
February 12, 2014
Bella Vira Town Homes Inc.
1313 Fairway Five Drive
Fort Collins, CO 80525
RE: Bella Vira Subdivision Filing Two
Fort Collins, Colorado
Project Number: U13012
To Whom It May Concern:
United Civil Design Group, LLC. (United Civil), is pleased to submit this Stormwater
Management Plan (SWMP) for the Bella Vira Subdivision Filing Two site located in Fort
Collins, Colorado. This report outlines best management practices (BMPs) to be
implemented with the proposed construction, in order to minimize potential pollutants
in stormwater discharges.
We have prepared this report to accompany the Colorado Department of Public Health
and Environment General Permit for Stormwater Discharges Associated with
Construction Activity.
Please note that this document is intended to be a “living” document which should be
modified and updated through the course of site construction to accurately reflect site
conditions at all times. Pollutant sources should be continuously evaluated, BMP’s
selected, documented, implemented, and pollutant sources re-evaluated. As such, this
version of the SWMP was prepared to facilitate initial plan approvals and permitting,
but does not necessarily reflect the final version, or the transitions throughout the
construction process. It shall be the responsibility of the Construction Site Operator
and/or the permit holder (or applicant thereof) to ensure the plan is properly
maintained and followed. The Construction Site Operator or SWMP Administrator for
this project is: Aggie Environmental Services Inc. – Lance McCracken, and can be
contacted at:
Address: 3172 51st Avenue, Greeley, CO, 80634
Phone: 970-515-8343
If you should have any questions or comments as you review this report, please feel free
to contact us at your convenience.
Sincerely,
Kevin Brazelton, PE
Engineering Manager
Stormwater Management Plan
Bella Vira Subdivision Filing Two
Fort Collins, CO
i U13012-SWMP.docx
TABLE OF CONTENTS
PAGE
I. Introduction ........................................................................................................................ 1
A. SWMP Objective ............................................................................................................. 1
II. Site Location and Description ............................................................................................. 1
A. Location .......................................................................................................................... 1
B. Description of Property .................................................................................................. 2
C. Description of Development .......................................................................................... 2
D. Construction Activity Description ................................................................................... 2
E. Proposed Sequence for Major Activities ......................................................................... 3
F. Area Estimates ................................................................................................................. 3
G. Runoff Coefficient and Soil Description ......................................................................... 3
H. Location and Description of Other Potential Pollution Sources .................................... 4
I. Non-Stormwater Components of Discharge ................................................................... 7
J. Receiving Waters ............................................................................................................. 7
III. BMPs for Stormwater Pollution Prevention ....................................................................... 7
A. Identification of Potential Pollutant Sources .................. Error! Bookmark not defined.
B. Erosion and Sediment Controls ...................................................................................... 7
C. Erosion Control Sequencing ......................................................................................... 11
D. Materials Handling and Spill Prevention ...................................................................... 13
IV. Other Controls .................................................................................................................. 14
V. Final Stabilization and Long-term Stormwater Quality .................................................... 14
VI. Inspection and Maintenance Procedures ......................................................................... 15
VII. References ........................................................................................................................ 17
APPENDICES
APPENDIX A – SWMP Maps, Plans, and Details
APPENDIX B – State of Colorado Permit
APPENDIX C – Stormwater Management Plan Inspection Reports
APPENDIX D – Contractor Inserts (as needed)
Stormwater Management Plan
Bella Vira Subdivision Filing Two
Fort Collins, CO
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I. Introduction
A. SWMP Objective
The objective of this Stormwater Management Plan (SWMP) for Bella Vira Subdivision
Filing Two, is to identify the Best Management Practices (BMP’s) which, when
implemented, will meet the requirements of the Colorado Department of Public Health
& Environment, Water Quality Control Division. According to Appendix A of the State of
Colorado General Permit Application and Stormwater Management Plan Guidance for
Stormwater Discharges Associated with Construction Activity (6/2011), the SWMP goal is
to, “describe appropriate controls and measures to improve water quality by reducing
pollutants in storm water discharges and ensure compliance with the requirements of
the storm water permit. The SWMP must be completed and implemented at the time
the project breaks ground, and revised if necessary as construction proceeds to
accurately reflect the conditions and practices at the site.”
The SWMP is a “living” document which should be modified and updated through the
course of site construction to accurately reflect site conditions at all times. Pollutant
sources should be continuously evaluated, BMP’s selected, documented, implemented,
and pollutant sources re-evaluated (and the process continued). A current copy of the
SWMP shall be kept onsite at all times. A person familiar with the SWMP and on-site
construction activities and clean-up procedures should be designated as the SWMP
Administrator for the site. The SWMP Administrator will be responsible for, but not
limited to, inspections and inspection reports, personnel training, regulatory agency
contact, SWMP implementation and revisions, field notebooks, and record keeping of
employee activities, contacts, and notifications.
References are found in the Appendix regarding some of the requirements, restrictions,
and forms related to the SWMP.
II. Site Location and Description
A. Location
The Bella Vira Subdivision Filing Two project site (referred herein as ”the site”) is located
in Fort Collins and is described as Lot 1 within Bella Vira Filing Two located within the
south half of Section 17, Township 7 North, Range 69 West of the Sixth P.M., City of Fort
Collins, Larimer County, Colorado.
The site is bounded by Overland Trail to the east, Colorado State University Equine
Facility to the north, and The Ponds at Overland Trail Second Filing to the west and
south.
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Fort Collins, CO
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B. Description of Property
The Filing Two portion of the site has a platted area of 3.47 acres and has historically
been used as agricultural farm land.
The following is a summary of the existing conditions:
Ground Cover/Percent Vegetation - The site has recently been overlot graded based
upon the Phase 1 construction plans. Therefore, the existing ground currently
consists of bare earth with 0% vegetative density.
Grades - In general, the majority of the site slopes from west to east with grades
between 2.0 to 2.5 percent.
Soil Type - According to the NRCS Web Soil Survey, the site consists of Altvan-Satanta
Loam and Kim Loam (Hydrologic Soil Group B).
Utilities – The site has several known utilities located on or adjacent to the property.
These include existing WAPA overhead power lines along the eastern perimeter of
the site, a 20-inch City of Fort Collins water main and a 36-inch Fort Collins-Loveland
Water District water main both along the southwest edge of the site. Other utilities
are anticipated to be built within the extension of West Elizabeth Street along the
north site boundary with Phase I of the Bella Vira development.
Detention Ponds and Storm Sewer – Tract C of the Bella Vira Subdivision located
adjacent to the west boundary of the site contains approximately 3.7 acres of
property and a City regional detention and water quality pond. This regional pond
will service the site for both water quality and detention.
C. Description of Development
The planned development for the site will consist of the following improvements:
• The construction of six (6) single family attached buildings with twenty-five (25)
units.
• The construction of a private drive and parking stalls in support of the building
construction.
• The construction of utilities to support the proposed buildings including sanitary,
water and storm drainage.
D. Construction Activity Description
Construction activity (for all phases of construction) includes installation of BMP’s,
demolition, grading, infill, utility (storm sewer, sanitary sewer, and waterline)
construction, roadway construction, drainage conveyance construction, and building
construction.
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Fort Collins, CO
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E. Proposed Sequence for Major Activities
The sequence for major construction activities includes the installation of BMP’s, site
demolition activities, grading and infill, major drainage conveyance construction,
installation of storm drain, installation of other utilities (underground water main and
services and sanitary sewer main and services), final grading of building pad, building
construction, final site grading, curb and gutter installation, asphalt paving, and
landscaping.
The following is the expected sequence of phasing for this site.
• Installation of erosion control
• Site demolition activities
• Site grading and infill
• Installation of utilities
• Installation of permanent vegetation in open areas
• Construction of new buildings
• Installation of curb and gutter and sidewalk
• Paving of roads and parking areas
• Installation of permanent landscape vegetation
Construction is estimated to begin November 2013 and be completed by October 2014.
F. Area Estimates
The site has a platted area of 3.47 acres. The total area subject to disturbance by
construction of this project is approximately 3.4 acres.
This SWMP does not include additional offsite area (for staging, material storage,
overburden stockpiles of dirt, borrow areas, etc.) other than that mentioned above.
G. Runoff Coefficient and Soil Description
Individual basin runoff coefficients as shown in the Bella Vira Subdivision Filing Two
Drainage Plan are summarized in the table on the following page:
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Developed Conditions "C" Values and 2-yr and 100-yr Runoff:
Basin
Design
Point
Area
%I C2 C100
Q2 Q100
(acre) (cfs) (cfs)
Proposed Basins -Filing Two
A1 A1 0.28 27% 0.45 0.57 0.35 1.55
A2 A2 0.60 35% 0.51 0.64 0.87 3.82
A3 A3 0.46 29% 0.46 0.58 0.60 2.62
A4 A4 0.78 80% 0.86 1.00 1.90 7.73
A5 A5 0.64 69% 0.77 0.96 1.39 6.07
A6 A6 0.32 47% 0.60 0.76 0.56 2.42
OS1 OS1 0.27 2% 0.25 0.31 0.16 0.68
OS2 OS2 0.10 2% 0.25 0.31 0.06 0.27
Onsite
Total
3.44 47% 0.61 0.76 5.67 24.21
CTL Thompson Inc., completed the geotechnical and groundwater investigations for the
project site and presented the results of this work in the Preliminary Geotechnical
Investigation, Bella Vira Townhomes, Elizabeth Street and Overland Trail, Fort Collins,
Colorado, CTL Project No. FC06266-115 (September 2013). According to this report,
there are expansive sandy clay soils overlying claystone bedrock. Groundwater was
observed at depths of approximately 11 to 23 feet below ground surface and bedrock
was encountered at depths between 12 to 16 feet.
According to the NRCS Web Soil Survey, the site consists of Altvan-Satanta Loam and Kim
Loam (Hydrologic Soil Group B). Both soils have a “Well drained” rating per the NRCS
Web Soil Group.
H. Location and Description of Potential Pollution Sources
This section focuses on the identification of the potential pollutant sources and briefly
discusses the Best Management Practices (BMPs) that will be used. More information
on the BMP’s utilized on this site is included in the next section “III. BMPs for
Stormwater Pollution Prevention”.
1. All disturbed and stored soils;
It is expected that there will be stockpiles of dirt on the site from the utility installations
and the foundation excavation. For this site, stockpiles should be located in areas
where Silt Fence or Straw wattles may be placed around the individual stockpiles to
contain the runoff (i.e. landscaped or disturbed earth areas).
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2. Vehicle tracking of sediments
It is anticipated that the contractor will access the property from West Elizabeth Street
adjacent to the site. A vehicle tracking control pad will be required onsite during
construction to reduce tracking sediment onto the adjacent streets.
At the end of each workday, the Contractor shall sweep or scrape West Elizabeth Street
(when constructed) of sediment that may have accumulated during the workday.
3. Management of contaminated soils
There are not any known contaminated soils on the site. However, if the contractor
encounters contaminated soils during the construction process they should stop
construction immediately and notify the appropriate government authorities in
accordance with good construction safety and practice.
4. Loading and Unloading operations
Loading and unloading will take place on the site. Truck access should be limited to the
extent possible to locations within the disturbed limits of the project. BMP’s such as silt
fence in non-paved areas and rock socks in paved areas should be placed to keep
sediment from exiting the disturbed area limits, primarily towards the south and west as
these are the low side of the site.
5. Outdoor storage activities (building materials, fertilizers, chemicals, etc.)
Storage of onsite materials including building materials, fertilizers, waterline, and
sanitary sewer will be covered and placed on pallets to prevent direct contact with the
ground and potential surface runoff.
6. Vehicle and equipment maintenance
Vehicle and equipment maintenance should be performed offsite or onsite within an
area surrounded by silt fence or straw wattles. Vehicle and equipment maintenance
shall not happen along the adjacent public streets. At a minimum, all vehicle and
equipment maintenance shall be performed on the hard surface or gravel areas at least
50’ from any stormwater feature (i.e. inlet, storm sewer, concentrated runoff, swale,
etc.)
7. Significant dust or particulate generating processes
The Contractor shall comply with applicable air pollution control requirements of the
City of Fort Collins. The Contractor shall take appropriate actions to minimize
atmospheric pollution and take reasonable precautions which shall include, but not be
limited to:
1. The use of water for control of dusts for construction processes such as
demolition, grading, or the clearing of land.
2. Covering, at all times when in motion, open-bodied trucks transporting
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materials likely to give rise to airborne dusts.
3. Require lower speeds for vehicles entering, exiting, and driving within the
project limits to minimize the amount of dust disturbed by moving vehicles.
8. Routine maintenance activities involving fertilizers, pesticides, detergents, fuels,
solvents, oils, etc;
Chemicals, fuels, lubricants, and paints typical with building construction stored on-site
will be in water tight containers and covered as necessary and stored in a bermed area,
a storage building, or within a vehicle to act as secondary containment.
9. On-site waste management practices (waste piles, liquid wastes, dumpsters, etc.);
1. Waste piles should be covered or surrounded by silt fence or straw wattles.
Liquid wastes should be collected and stored in covered containers and
disposed of properly.
2. Solid waste materials, including disposable materials incidental to the major
construction activities, will be collected in on site dumpsters. The containers will
be emptied periodically and trucked away from the site. Dumpsters should have
covers.
10. Concrete truck / equipment washing, including the concrete truck chute and
associated fixtures and equipment;
A dedicated concrete washout area is necessary for this project. The contractor shall
clean out equipment within the washout area so that runoff is not allowed to leave site
and enter the public streets or neighboring properties.
11. Dedicated asphalt and concrete batch plants;
There will not be dedicated asphalt or concrete batch plants on this site.
12. Non-industrial waste sources such as worker trash and portable toilets
Worker’s trash shall be disposed of in an onsite dumpster. The site should be free of
trash at the end of each working day.
Portable toilets shall be utilized by construction personnel and serviced regularly by a
commercial operator. They shall be located a minimum of 5 feet from the curb or 50
feet from inlets. If sanitary facilities are located on a paved surface, toilets shall be
equipped with a containment pan or a secondary containment BMP. Regardless of
location all portable toilets shall be anchored per manufacturer recommendations.
13. Other areas or procedures where potential spills can occur.
BMP’s such as tarps and drip pans should be used for painting, stucco, dry-wall, etc.
operations
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I. Non-Stormwater Components of Discharge
According to the CTL Thompson Report, groundwater was observed at depths of
approximately 11 to 23 feet below ground surface. At these depths, it is possible that
groundwater may be encountered during construction. Where groundwater is
encountered during trenching or excavation operations, a temporary
sediment/retention basin should be constructed to store pumped dewatering flows.
The other non-storm water components of discharge include, but are not limited to,
water line flushing, irrigation to establish seeding, and watering for dust mitigation, and
compaction. It is important for the contractor to manage the runoff from these items
utilizing the BMP’s mentioned in this report (i.e. silt fence, straw waddles, concrete
washout areas, surface roughening, etc.).
J. Receiving Waters
The site lies within the Canal Importation Basin. The vast majority of the proposed site
will drain via overland flow, grass lined swales and storm drains to the existing regional
pond located west of the site. Upon exiting the regional pond, runoff from the basin
empties into the Old Town and Spring Creek basins and ultimately drains to the Poudre
River through a series of inlets, culverts, and channels.
III. BMPs for Stormwater Pollution Prevention
A. Erosion and Sediment Controls
Once construction activity begins, Best Management Practices (BMP’s) intended to
contain sediment onsite must be constructed, inspected, and repaired as necessary.
Such controls must be functional before upslope land disturbance takes place. The
BMP’s will be installed as shown on the SWMP Map shown in Appendix A. They must be
supplemented as on-site experience proves necessary in order to control sediment,
pollutant discharge, and ensure public safety.
The following temporary and permanent BMP’s will be installed and maintained to
control on-site erosion and prevent sediment from traveling off-site during construction.
Temporary BMP’s
• Construction Fence is a temporary BMP. The contractor is to place construction
fencing around development as needed to limit access by construction equipment
and personal vehicles to designated areas of ingress and egress.
• Inlet Protection is a temporary BMP that helps prevent soil and debris from the site
from entering the storm drain inlets and usually consists of a sediment filter around
or upstream of the storm drain inlet. Inlet protection allows storm water to flow
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into the drain but only after excess sediment has been filtered out. Inlet protection
will be used on existing and proposed storm inlets and will be installed at such time
as construction of the storm sewer system occurs. Inlet protection for this site will
consist of:
o Wattles, which are meshed netting “tubes” filled with straw, excelsior, or
coconut fiber placed around grated inlets and curb inlets. Wattles require
proper installation and maintenance to ensure their performance. Sizing shall be
per manufacturer’s recommendation.
o Block and Gravel Filters, which are comprised of cinder blocks stacked to a
height of 24 inches surrounding the drop inlet perimeter and further surrounded
by 1-1/2" gravel enclosed in wire mesh.
o Silt Fence Boxes, which are wooden frames surrounded by geotextile fabric. The
frame shall consist of (4) 3-foot tall stakes connected by a 2x4 wooden frame at
the top. The stakes shall be driven into the ground such that the height of the
top of the stakes and frame is no more than 18 inches above the ground.
Geotextile fabric shall be fastened to all four sides of the wooden frame and the
bottom edge of the fabric shall be buried to a depth of 6 inches. The frame and
fabric shall be configured such that any runoff approaching the inlet shall pass
through the fabric.
• Regular Meetings are a temporary and non-structural BMP. Regular meetings with
on-site workers including builders, suppliers, landscape personnel, etc. should be
conducted so that they are kept up to date with site standard operating procedures.
• Silt Fence is a woven synthetic permeable fabric that filters runoff. Silt fence is a
temporary barrier that is installed prior to earthmoving activities and is placed
downstream of areas where runoff from construction activities is expected to occur,
especially along the site perimeter to allow sediment to settle from runoff before
water leaves the construction site. Silt fences will be installed per manufacturer’s
recommendations. Silt fence encourages sheet flow and is not intended to be used
in areas of concentrated flow. If concentrated flow is encountered during the
placement of the fence, an alternative BMP shall be used and the SWMP should be
updated to reflect this change.
• Staging Areas will be provided during the construction process at least 100’ from
any storm water conveyance. Staging areas include locations for vehicle fueling,
concrete truck washout, material storage and transfer, equipment maintenance and
cleaning, and other construction activities. These areas will be maintained as
isolated locations that allow for contaminants to be concentrated and removed from
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the site as necessary. Concrete washout areas shall be designed such that washout
water cannot leave the location, nor shall storm water runoff wash concrete from
the locations.
• Straw Wattles are a temporary BMP that are used for a variety of purposes. They
are used for inlet protection, curbside check dams, swale protection, at the bottom
of slopes, or the limits of property boundaries. They are easy to install and are
increasingly being used for Small Site SWMP’s. The straw wattles, which are meshed
netting “tubes,” filled with straw, excelsior, or coconut fiber. Wattles for swale
protection should be installed following rough grading of channel areas. Wattles
require proper installation and maintenance to ensure their performance.
• Surface Roughening is provided following grading activities to slow the effects of
wind erosion. Roughening can be used as a temporary BMP and is a technique used
for creating unevenness on bare soil through the construction of furrows (groove
cuts) running across a slope or by utilization of construction equipment to track the
soil surface. The primary function of surface roughening is to reduce erosion
potential by decreasing runoff velocities, reducing the length of sheet flow trapping
sediment, and increasing infiltration of water into the soil.
• Temporary Seeding is the establishment of a temporary vegetative cover on a
graded area that will be exposed for longer 30 days. Temporary seeding can be used
on areas requiring temporary protection that will eventually need permanent
vegetation at the completion of the construction or it can be used for areas that will
be re-disturbed after a period of inactivity. The seed mix 100% smooth brome at a
minimum application rate of 30 pls/lbs/acre. Fertilizer and Mulch shall be included
as specified on the plans.
• Temporary Erosion Control Fabric is comprised of a temporary degradable erosion
control blanket designed to provide immediate erosion protection and vegetation
establishment assistance on moderate slopes and low to medium-flow channels
where bare-ground seeding and loose mulches often fail. Temporary erosion control
blankets are being recommended moderate slopes that do not require permanent
turf reinforcement matting (see below).
• Vehicle Tracking Control is a stabilized stone pad located at points of ingress and
egress on a construction site and acts as a temporary BMP. The stone pad is
designed to reduce the amount of mud transported onto public roads by
construction traffic by removing mud and sediment from the vehicle’s wheels when
it drives over the gravel pad. These areas are limited to the minimum number
necessary to provide functional construction access and are installed prior to grading
activities. Whenever the construction entrance exists onto a public road, the road
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shall be cleaned at the end of each day. Vehicle Tracking Control will also be used
on this site at any stockpile area exits.
• Wattle Sediment Protection is a temporary BMP that are typically used as check
structures in areas of concentrated water flow such as swales, grassed waterways,
and down drains. They can be installed in combination with any type of rolled
erosion control blanket or channel liner and function by slowing water velocity,
settling out sediment, and preventing undermining of the channel lining material.
Wattles for swale protection should be installed following rough grading of channel
areas. Sizing and spacing shall be per manufacturer’s recommendation.
• Wind Borne Sediment and Dust Control measures will be provided during the
construction process to control wind borne sediment. During grading activities,
water will be applied to the disturbed soils for the purpose of maintaining cohesion
with clay type soils and also to meet moisture requirements for compaction of
disturbed soils. Other measures of mitigation for wind erosion may include the
timely installation of seed and mulch following the establishment of final grade, and
the timely installation of pavement following completion of utility trenching
operations and curb construction. Open areas should be kept in a roughened
condition (see Surface Roughening above).
Permanent BMP’s
• Grass-Lined Swales (included as part of permanent seeding or other permanently
stabilized swales) are permanent landscaped channels constructed generally below
grade to convey runoff or channel water to a desired location. The grass-lined areas
allow for infiltration to occur as well as including a flow path across a vegetated
surface slowing the conveyance rate of storm water runoff.
• Permanent Seeding and Planting is the establishment of a permanent perennial
vegetation such as trees, shrubs, vines, grasses/sod, or legumes on exposed areas
for final permanent stabilization in order to provide stabilization of the soil by
holding soil particles in place. These items should be installed as per the approved
Landscape Plan. Soil Amendments shall be incorporated in all landscape areas to a
depth of 6” at a rate of 3 cubic yards per 1000 square feet of area unless 4” of loose
topsoil have been imported onto the site over 4” of loosened subgrade soils.
Permanent Landscaping reduces storm water runoff velocity, maintains sheet flow,
protects the soil surface from erosion, promotes infiltration of runoff, and improves
wildlife habitat.
• Preservation of Existing Vegetation should occur where no construction activity is
expected to occur. Preservation of natural vegetation is generally a permanent BMP
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and is applicable to construction sites with pre-existing vegetation. Only land
needed for building activities and vehicle traffic needs is to be cleared.
• Snouts or Sump Manholes/Inlets include selected manholes or inlets to have a
sump to collect sediment. Snouts (oil debris separators) are vented plastic
composite hoods that attach to the wall of an inlet or manhole over the outlet pipe
in such a manner as to prevent the exit of floating debris, grit, and oil and also
include the design of a sump condition. Snouts and sumps are permanent BMP’s
that are used on this project as a Low Impact Design element.
• Turf Reinforcement Matting is comprised of a permanent, super high strength
three-dimensional matting structure incorporated with a coconut fiber matrix. It is
designed to provide both long-term, pre-vegetated erosion protection and
permanent turf reinforcement in a wide variety of applications, including critical
flow channels and stream banks. Permanent slope protection is used within various
swales that require permanent slope protection due to high Froude numbers, high
velocities (erosion potential), or steep slopes within this site that require immediate
permanent erosion control protection.
• Storm Sewer Outlet Protection devices are structurally lined aprons or other energy
dissipating devices placed at the outlets of pipes or paved channel sections. Outlet
protection devices prevent scour at storm water outlets and minimize the potential
of downstream erosion by reducing the velocity of storm water flows. Riprap or turf
reinforcement matting will be used downstream of storm sewer outfalls as pipe
outlet protection. Outlet Protection is installed with the storm sewer construction
and serves as a permanent structural BMP.
B. Erosion Control Sequencing
This project will have three distinct erosion control phases. The initial phase will be
installing erosion control items prior to any construction on the site. After the initial
erosion control items have been installed, the next phase will consist of site demolition
and rough grading activities. Following completion of the demolition and rough grading,
construction of the infrastructure (utilities, storm sewer, roads, and development of
landscaped areas) will be conducted. The final stage will include the construction of the
new buildings and site hard surfaces including roads, driveways, sidewalks and parking
areas. Each of the phases is described below, including necessary erosion control items.
A SWMP drawing is located in the Appendix that includes the minimum required BMP’s
found on the Sediment and Erosion Control Plans. It should be filled in with the
appropriate BMP’s as they are constructed/placed within the project site.
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Phase 1 – Prior to Construction
• Preserve Existing Vegetation – Before construction commencement, areas that are
not disturbed by construction activity should be preserved as needed with
construction fencing, silt fencing, signage, or other means to keep vehicular traffic
out of the area to be left undisturbed.
• Silt Fence – Before construction commencement, silt fence will be placed
downstream of areas where runoff from construction activities is expected to occur.
• Staging Area – A concrete wash out area, fueling area, and other staging areas will
be provided during the construction process at least 100’ from any storm water
conveyance. A staging area is to be shown on the SWMP drawing when its location
is identified.
• Vehicle Tracking Control – Before commencement of construction, vehicle tracking
control shall be placed at the location shown west of Overland Trail along West
Elizabeth Street. Any other points of ingress and egress planned by the contractor
and approved by the owner shall also receive suitable vehicle tracking control
BMP's.
Phase 2 – Site Demolition, Site Grading, and Infrastructure Construction
The items installed in Phase 1 shall be in place, functional, and maintained during and
following the site demolition and site grading operations. In addition to those items, the
following BMP’s shall be installed.
• Wind Borne Sediment and Dust Control – Wind borne sediment and dust control
measures should be implemented during grading activities. This will be particularly
important to consider prior to the establishment of seeding.
• Inlet Protection – Wattles will be placed at curb inlets and area inlets located
throughout the site immediately after the inlet is constructed / installed. Existing
inlets shall be protected prior to heavy equipment staging, demolition, or
commencement of construction activities.
• Swale Protection – Straw wattles will be placed within the swales immediately
following rough grading. Wattles shall be placed across the swale for every 2’ of
drop in swale elevation or every 300'.
• Slope Protection – Surface roughening and contour furrows shall occur after rough
grading.
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Bella Vira Subdivision Filing Two
Fort Collins, CO
13 U13012-SWMP.docx
• Permanent Seeding – Permanent seeding or landscaping shall be placed
immediately in areas that are final graded and where little future disturbance is
expected.
• Temporary Seeding – The majority of the landscaped areas will be permanently
seeded or planted. However, if disturbed areas are left without permanent
stabilization 30 days after grading, temporary seeding will be required.
• Snouts and Sump Manhole/Inlets – A snout will be located within Inlet 1-2 as shown
in the plans.
• Outlet Protection– Riprap and/or permanent turf reinforcement matting will be
placed immediately downstream of storm sewer outfalls.
Phase 3 – Building Construction and Roadway, Sidewalk, and Parking Area Construction
This phase will likely begin before the seeding has been established throughout the site,
so it is expected that majority of the BMP’s shown in Phase 1 and Phase 2 will be in
place at the beginning of this phase. As roads and parking areas are paved and seeding
is established there will be previously placed BMP's such as vehicle tracking control
devices and some sections of silt fence that may be removed. There are other items
such as inlet protection, silt fence, and swale protection that may only be removed after
all construction is complete and upstream areas are established.
C. Materials Handling and Spill Prevention
The site development includes appropriate construction staging and stockpile areas
identified on the SWMP Plans shown in Appendix A. Stormwater runoff generated from
the staging areas will be routed to a temporary sedimentation area where runoff will be
contained and filtered before being discharged downstream. The staging/stockpile
area(s) may be moved to a location no closer than 100’ from a storm water conveyance.
Vehicle tracking control should be placed at the stockpile area entrance/exit and silt
fence should surround it. If relocated, the SWMP should be updated with the actual
location of the stockpile/staging area(s).
Chemicals, fuels, lubricants, and paints typical with building construction stored on-site
will be in water tight containers and covered as necessary and stored in a bermed area,
a storage building, or within a vehicle to act as secondary containment. Storage of
onsite materials including building materials, fertilizers, waterline, sanitary sewer, and
storm sewer will be covered and placed on pallets to prevent direct contact with the
ground and potential surface runoff.
Stormwater Management Plan
Bella Vira Subdivision Filing Two
Fort Collins, CO
14 U13012-SWMP.docx
Other hazardous waste disposal (that is not typical to residential building construction)
is not included within this SWMP. Concrete and asphalt batch plants are not anticipated
on this site and thus are not included in this SWMP.
In the event of a spill or accident, it shall be contained and disposed of so that it will not
flow from the site or soak into the soil. Once construction is completed, concrete waste
and contaminated soil will be disposed of properly. The SWMP Administrator should be
notified of spills.
IV. Other Controls
The following includes other measures to control pollutants:
• Solid waste materials, including disposable materials incidental to the major
construction activities, will be collected in containers. The containers will be emptied
periodically and trucked away from the site. Dumpsters shall have covers.
• Water used to establish and maintain grass, for dust control, and for other purposes
during the construction phase must originate from a public water supply or private well
approved by the Colorado Department of Public Health and Environment unless
otherwise approved.
• Sanitary facilities shall be provided at the site throughout construction activities. They
shall be utilized by construction personnel and serviced regularly by a commercial
operator. They shall be located a minimum of 5 feet from the curb or 50 feet from
inlets and must be anchored. If sanitary facilities are located on a paved surface, a
secondary containment BMP will need to be constructed.
• Access off of paved roads should be limited.
• BMP’s such as tarps and drip pans should be used for painting, stucco, dry-wall etc.
operations.
V. Final Stabilization and Long-term Stormwater Quality
Final stabilization is reached when all soil disturbing activities at the site have been completed
and vegetative cover has been established with a density of at least 70 percent of pre-
disturbance levels or when equivalent permanent erosion reduction methods have been
utilized. Upon final stabilization, temporary BMP’s may be removed, unless they are required
to remain in place for future phasing.
Water quality enhancements are provided in areas where grass-lined swales are provided for
storm water conveyance. The soft bottom/overbank areas allow for infiltration to occur as well
Stormwater Management Plan
Bella Vira Subdivision Filing Two
Fort Collins, CO
15 U13012-SWMP.docx
as including a flow path across a vegetated surface slowing the conveyance rate of storm water
runoff.
VI. Inspection and Maintenance Procedures
Upon completion of each phase of construction, appropriate measures shall be taken to inspect
and maintain existing erosion control features, as described herein or per manufacturers
specifications (whichever is more stringent) and install new erosion control elements associated
with each phase of construction.
The temporary BMP’s will be inspected and documented at a minimum of once every 14 days
and after each precipitation or snowmelt event. The SWMP will be kept up-to-date with
inspection records, maintenance procedures, and changes. Records should include complete
inspection reports for each inspection, maintenance, and/or repair. A record-keeping system is
recommended in managing inspection and maintenance reports and should include all
maintenance records, spill response, weather conditions, training, correspondence, etc. A
blank copy the CDOT Stormwater Field Inspection Report is provided in Appendix C.
Preventative maintenance also involves the regular inspection and testing of equipment, timely
maintenance of the equipment, and complete records of the maintenance and inspections of
the equipment. The maintenance and inspection records should be kept on site and made
available upon request.
Inspections must include the observation of the construction site perimeter, runoff discharge
points, disturbed areas, staging areas (including concrete washout areas and fueling areas),
erosion and sediment control measures identified in this SWMP, and any other structural BMP’s
that may require maintenance. The inspection must determine if there is evidence of or
potential for pollutants to enter the drainage system and if they should be modified, replaced,
or added to.
The following list includes some recommended maintenance procedures:
• Erosion and sediment control measures determined, upon inspection, to be in need of
repair shall be maintained before the next anticipated storm event or as necessary to
maintain continued effectiveness of erosion and sediment control measures. If it is
impractical to maintain erosion and sediment control measures before the next storm
event, maintenance should be accomplished as soon as practical.
• Locations where vehicles enter or exit the site shall be inspected for evidence of sediment
being tracked off-site by construction traffic. Such sediment shall be removed before it can
be conveyed to the receiving storm drains or creeks.
Stormwater Management Plan
Bella Vira Subdivision Filing Two
Fort Collins, CO
16 U13012-SWMP.docx
• Seeded areas will be checked to see that grass coverage is maintained. Areas will be
watered, fertilized, and reseeded as needed.
• It is the responsibility of the Site Operator to maintain effective pollutant discharge
controls. Actual physical site conditions or contractor practices could make it necessary to
install more control than are shown on the Erosion Control Plan. For example, localized
concentrations of surface runoff or unusually steep areas could require additional erosion
control devices. Assessing the need for, and implementing additional controls will be a
continuing aspect of the SWMP until final stabilization. This plan intends to control water-
borne and liquid pollutant discharges by some combination of interception, filtration, and
containment. Parties implementing this plan must remain alert to the need to periodically
refine and update the plan in order to accomplish the intended goals.
• Sediment that has escaped the construction site must be removed at a frequency sufficient
to minimize off-site impacts.
Stormwater Management Plan
Bella Vira Subdivision Filing Two
Fort Collins, CO
17 U13012-SWMP.docx
VII. References
1. Final Drainage and Erosion Control Report for Bella Vira, Jim Sell Design, December 21, 2007.
2. Natural Resources Conservation Service Web Soil Survey at
www.websoilsurvey.nrcs.usda.gov/app.
3. Preliminary Geotechnical Investigation, Bella Vira Townhomes, Elizabeth Street and Overland
Trail, Fort Collins, Colorado, CTL Thompson, Inc., September 2013.
4. Urban Storm Drainage Criteria Manual, Urban Drainage and Flood Control District, Wright
Water Engineers, Inc., Denver, Colorado, June 2001.
5. Fort Collins Stormwater Criteria Manual, City of Fort Collins, Colorado, as adopted by Ordinance
No. 174, 2011, and referenced in Section 26-500 (c) of the City of Fort Collins Municipal Code.
6. Urban Storm Drainage Criteria Manual, Volumes 1-3, Urban Drainage and Flood Control
District, Wright-McLaughlin Engineers, Denver, Colorado, Revised April 2008.
7. State of Colorado, Stormwater Discharges Associated with Construction Activity, Stormwater
Management Plan Preparation Guides, www.colorado.com.
APPENDIX A
• Permit Map
• Overall Grading and Erosion Control Plan (Map Pocket)
• Erosion Control Details (Map Pocket)
• SWMP Drawing – Phase 1 (Map Pocket)
• SWMP Drawing – Phase 2 (Map Pocket)
• SWMP Drawing – Phase 3 (Map Pocket)
• SWMP Drawing – Blank Version (Map Pocket)
BELLA VIRA - FILING 2
FEBRUARY 12, 2014
PERMIT SITE MAP
0 50'
SCALE: 1" = 50'
25'
NORTH
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
Lot 21
Lot 20
Lot 1
Lot 2
Lot 3
Lot 25
Lot 24
Lot 23
Lot 22
Lot 7
Lot 6
Lot 5
Lot 4
Lot 12
Lot 8
Lot 11
Lot 13
Lot 15
Lot 14
Lot 16
Lot 17
Lot 10 Lot 9
ROOF DRAIN
(SEE SHEET C3.02)
STORM LINE 1
(SEE SHEET C3.02)
2' SIDEWALK
CHASE
BIOSWALE WITH
UNDERDRAIN (SEE
DETAILED GRADING
PLAN & DETAILS)
BUILDING 4
BUILDING 3
PREPARED FOR: DATE SUBMITTED:
The engineer preparing these plans will not be responsible for, or
liable for, unauthorized changes to or uses of these plans. All
changes to the plans must be in writing and must be approved by
the preparer of these plans.
CAUTION
BELLA VIRA TOWNHOMES INC. 02/12/2014
BELLA VIRA SUBDIVISION FILING TWO
26
U13012
PRELIMINARY
PLANS
NOT FOR CONSTRUCTION
Civil Engineering & Consulting
1501 Academy Court, Suite 203
Fort Collins, CO 80524
(970) 530-4044
www.unitedcivil.com
NONE KEVIN
D:\DROPBOX\PROJECTS\U13012 BELLA VIRA\CADD\CP
C7.00_DETAILS.DWG
2/12/2014 8:42:43 AM
SME
CONSTRUCTION DETAILS
C7.05
N/A
N/A
SF SF
APPROVED:
DATE:
DRAWN BY:
12/27/00
NBJ
APPROVED:
DATE:
DRAWN BY: NBJ
11-29-2000
APPROVED:
DATE:
DRAWN BY:
01/03/01
NBJ
IP ECB
BIO
1
C7.05 NOT TO SCALE
NOTES:
1. REFER TO THE CITY OF FORT COLLINS BIORETENTION SAND MEDIA SPECIFICATION FOR MORE
INFORMATION ON THE SOIL MIX.
2. BIORETENTION SAND MEDIA SHALL BE PROVIDED BY HAGEMAN EARTH CYCLE OR APPROVED EQUAL.
NOTES:
1. CONTRACTOR SHALL PLACE HDPE IMPERVIOUS MEMBRANE ON BOTH SIDES OF BIOSWALE.
2. IMPERVIOUS MEMBRANE NOT REQUIRED FOR EITHER SIDE OF LEVEL SPREADER.
5' MIN. WIDTH
MINIMUM 30-MIL
HDPE IMPERVIOUS
MEMBRANE
MINIMUM 12" THICK
BIORETENTION
SAND MEDIA LAYER
CWA
VEHICLE CONTROL TRACKING PAD
NOT TO SCALE
CONCRETE WASHOUT AREA
NOT TO SCALE
1
C7.06
2
C7.06
PREPARED FOR: DATE SUBMITTED:
The engineer preparing these plans will not be responsible for, or
liable for, unauthorized changes to or uses of these plans. All
changes to the plans must be in writing and must be approved by
the preparer of these plans.
CAUTION
BELLA VIRA TOWNHOMES INC. 02/12/2014
BELLA VIRA SUBDIVISION FILING TWO
26
U13012
PRELIMINARY
PLANS
NOT FOR CONSTRUCTION
Civil Engineering & Consulting
1501 Academy Court, Suite 203
Fort Collins, CO 80524
(970) 530-4044
www.unitedcivil.com
NONE KEVIN
D:\DROPBOX\PROJECTS\U13012 BELLA VIRA\CADD\CP
C7.00_DETAILS.DWG
2/12/2014 8:42:43 AM
SME
CONSTRUCTION DETAILS
C7.06
N/A
N/A
WATTLE INSTALLATION DETAIL
NOT TO SCALE
3
C7.06
VTC
ROCK SOCK
NOT TO SCALE
4
C7.06
STORMWATER MANAGEMENT PLAN
GENERAL NOTES
SWMP-1
PREPARED FOR: DATE SUBMITTED:
The engineer preparing these plans will not be responsible for, or
liable for, unauthorized changes to or uses of these plans. All
changes to the plans must be in writing and must be approved by
the preparer of these plans.
CAUTION
BELLA VIRA TOWNHOMES INC. 02/12/2014
BELLA VIRA SUBDIVISION FILING TWO
5
U13012
PRELIMINARY
PLANS
NOT FOR CONSTRUCTION
Civil Engineering & Consulting
1501 Academy Court, Suite 203
Fort Collins, CO 80524
(970) 530-4044
www.unitedcivil.com
GENERAL NOTES; SPECIFIC TO EROSION AND SEDIMENT CONTROL
(SEE FINAL PLAN SET FOR COMPLETE SET OF GENERAL NOTES)
1. All materials, workmanship, and construction of public improvements shall meet or exceed the standards and specifications set forth in the Larimer
County Urban Area Street Standards and applicable state and federal regulations. Where there is conflict between these plans and the specifications, or
any applicable standards, the most restrictive standard shall apply. All work shall be inspected and approved by the City of Fort Collins.
14. A State Construction Dewatering Wastewater Discharge Permit is required if dewatering is required in order to install utilities or water is discharged into a
storm sewer, channel, irrigation ditch or any waters of the United States.
15. The Developer shall comply with all terms and conditions of the Colorado Permit for Storm Water Discharge (Contact Colorado Department of Health,
Water Quality Control Division, (303) 692-3590), the Storm Water Management Plan, and the Erosion Control Plan.
20. Temporary erosion control during construction shall be provided as shown on the Erosion Control Plan. All erosion control measures shall be maintained
in good repair by the Developer, until such time as the entire disturbed areas is stabilized with hard surface or landscaping.
21. The Developer shall be responsible for insuring that no mud or debris shall be tracked onto the existing public street system. Mud and debris must be
removed within 24 hours by an appropriate mechanical method (i.e. machine broom sweep, light duty front-end loader, etc.) or as approved by the the
City of Fort Collins street inspector.
23. The Developer shall be responsible for obtaining all necessary permits for all applicable agencies prior to commencement of construction. The Developer
shall notify the the City of Fort Collins Inspector (Fort Collins - 221-6605) and the City of Fort Collins Erosion Control Inspector (Fort Collins - 221-6700)
at least 2 working days prior to the start of any earth disturbing activity, or construction on any and all public improvements. If the City of Fort Collins
Engineer is not available after proper notice of construction activity has been provided, the Developer may commence work in the Engineer absence.
However, the City of Fort Collins reserves the right not to accept the improvement if subsequent testing reveals an improper installation.
39. The Developer shall be responsible for recording as-built information on a set of record drawings kept on the construction site, and available to the
Larimer County's Inspector at all times. Upon completion of the work, the contractor(s) shall submit record drawings to the City of Fort Collins Engineer.
STANDARD EROSION AND SEDIMENT CONTROL CONSTRUCTION PLAN NOTES
1. The erosion control inspector must be notified at least twenty-four (24) hours prior to any construction on this site.
2. There shall be no earth-disturbing activity outside the limits designated on the accepted plans.
3. All required perimeter silt and construction fencing shall be installed prior to any land disturbing activity (stockpiling, stripping, grading, etc). All other
required erosion control measures shall be installed at the appropriate time in the construction sequence as indicated in the approved project schedule,
construction plans, and erosion control report.
4. At all times during construction, the developer shall be responsible for preventing and controlling on-site erosion including keeping the property
sufficiently watered so as to minimize windblown sediment. The developer shall also be responsible for installing and maintaining all erosion control
facilities shown herein.
5. Pre-disturbance vegetation shall be protected and retained wherever possible. Removal or disturbance of existing vegetation shall be limited to the
area(s) required for immediate construction operations, and for the shortest practical period of time.
6. All soils exposed during land disturbing activity (striping, 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 BMPS are 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 city/county.
7. In order to minimize erosion potential, all temporary (structural) erosion control measures shall:
A. Be inspected at a minimum of once every two (2) weeks and after each significant storm event and repaired or reconstructed as necessary in order
to ensure the continued performance of their intended function.
X
X
X
X
X
X
X
X
X
X
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
2' SIDEWALK
CHASE
BIOSWALE WITH
UNDERDRAIN
2-FOOT
CONCRETE PAN
2' SIDEWALK
CHASE
BUILDING 3
BUILDING 4
BUILDING 2
BUILDING 5
BUILDING 6
BUILDING 1
PREPARED FOR: DATE SUBMITTED:
The engineer preparing these plans will not be responsible for, or
liable for, unauthorized changes to or uses of these plans. All
changes to the plans must be in writing and must be approved by
the preparer of these plans.
CAUTION
BELLA VIRA TOWNHOMES INC. 02/12/2014
BELLA VIRA SUBDIVISION FILING TWO
5
U13012
PRELIMINARY
X
X
X
X
X
X
X
X
X
X
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
2' SIDEWALK
CHASE
BIOSWALE WITH
UNDERDRAIN
2-FOOT
CONCRETE PAN
2' SIDEWALK
CHASE
BUILDING 3
BUILDING 4
BUILDING 2
BUILDING 5
BUILDING 6
BUILDING 1
PREPARED FOR: DATE SUBMITTED:
The engineer preparing these plans will not be responsible for, or
liable for, unauthorized changes to or uses of these plans. All
changes to the plans must be in writing and must be approved by
the preparer of these plans.
CAUTION
BELLA VIRA TOWNHOMES INC. 02/12/2014
BELLA VIRA SUBDIVISION FILING TWO
5
U13012
PRELIMINARY
X
X
X
X
X
X
X
X
X
X
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
IMPERVIOUS
BUILDING FOOTPRINT
2' SIDEWALK
CHASE
BIOSWALE WITH
UNDERDRAIN
2-FOOT
CONCRETE PAN
2' SIDEWALK
CHASE
IMPERVIOUS
BUILDING FOOTPRINT
IMPERVIOUS
BUILDING
FOOTPRINT
IMPERVIOUS
BUILDING FOOTPRINT
IMPERVIOUS PARKING
& DRIVEWAY FOOTPRINT
IMPERVIOUS
BUILDING
FOOTPRINT
IMPERVIOUS
BUILDING
FOOTPRINT
X
X
X
X
X
X
X
X
X
X
2' SIDEWALK
CHASE
BIOSWALE WITH
UNDERDRAIN
2-FOOT
CONCRETE PAN
2' SIDEWALK
CHASE
BUILDING 3
BUILDING 4
BUILDING 2
BUILDING 5
BUILDING 6
BUILDING 1
PREPARED FOR: DATE SUBMITTED:
The engineer preparing these plans will not be responsible for, or
liable for, unauthorized changes to or uses of these plans. All
changes to the plans must be in writing and must be approved by
the preparer of these plans.
CAUTION
BELLA VIRA TOWNHOMES INC. 02/12/2014
BELLA VIRA SUBDIVISION FILING TWO
5
U13012
PRELIMINARY
PLANS
NOT FOR CONSTRUCTION
Civil Engineering & Consulting
1501 Academy Court, Suite 203
Fort Collins, CO 80524
(970) 530-4044
www.unitedcivil.com
LEGEND
NOTES
1. SEE "STANDARD GRADING AND EROSION AND SEDIMENT
CONTROL CONSTRUCTION PLAN NOTES" ON SHEET
SWMP-1.
2. ALL DISTURBED AREAS NOT ASSOCIATED WITH PARKING
LOT/BUILDING AREAS SHALL BE LANDSCAPED OR SEEDED
AND MULCHED AS SOON AS POSSIBLE IN ACCORDANCE
WITH THE LANDSCAPING PLANS AND/OR LOCAL CRITERIA.
3. CONTRACTOR SHALL IMMEDIATELY STABILIZE ALL
DISTURBED SLOPES BY CRIMP MULCHING OR SIMILAR
METHODS.
TOTAL DISTURBED AREA = 3.4 ACRES
4. CONSTRUCTION SITE OPERATOR:
AGGIE ENVIRONMENTAL SERVICES INC.
5. THIS SEDIMENT/EROSION CONTROL PLAN IS SCHEMATIC IN
NATURE. AS SUCH, GRAPHICAL SYMBOLS MAY NOT BE TO
SCALE, NOR ARE THEY NECESSARILY SHOWN IN THEIR
APPENDIX B
State of Colorado Permit
11/19/2013
John Minatta, Pres
Bella Vira Town Homes Inc
2037 Lexington Ct
Fort Collins, CO 80526
RE: Certification, Colorado Discharge Permit System
Permit No., COR030000, Certification Number: COR03L459
Dear Mr./Ms. Minatta;
The Water Quality Control Division (the Division) has reviewed the application submitted for the Bella Vira Town Homes Ph II facility and determined
that it qualifies for coverage under the CDPS General Permit for Stormwater Discharges Associated with Construction Activities (the permit). Enclosed
please find a copy of the permit certification, which was issued under the Colorado Water Quality Control Act.
Facility: Bella Vira Town Homes Ph II Larimer County
Construction Activities: Multi-Family Residential Development,
Legal Contact (receives all legal documentation pertaining to the permit certification):
John Minatta, Pres
Bella Vira Town Homes Inc
2037 Lexington Ct
Fort Collins, CO 80526
Phone number: 970-690-2662
Email: johnminatta@comcast.net
Facility Contact (contacted for general inquiries regarding the facility):
John Minatta, Pres Phone number: 970-690-2662
Email: johnminatta@comcast.net
Billing Contact (receives the invoice pertaining to the permit certification):
John Minatta, Pres
Bella Vira Town Homes Inc
2037 Lexington Ct
Fort Collins, CO 80526
Phone number: 970-690-2662
Email: johnminatta@comcast.net
Any changes to the contacts listed above must be provided to the Division on a Change of Contact form. This form is available on the Division’s website
at coloradowaterpermits.com.
The Annual Fee for this certification is $245.00, and is invoiced every July. Do Not Pay This Now. The initial prorated invoice will be sent to the legal
contact shortly.
The Division is currently developing a new permit and associated certification for the above permitted facility. The development and review
procedures required by law have not yet been completed. The Construction Stormwater General Permit, which will expire June 30, 2012, will be
administratively continued and will remain in effect under Section 104(7) of the Administrative Procedures Act, C.R.S. 1973, 24-4-101, et seq (1982
repl. vol. 10) until a new permit/certification is issued and effective. The renewal for this facility will be based on the application that was received
11/18/2013.
Please read the enclosed permit and certification. If you have any questions please contact Rik Gay, Environmental Protection Specialist, at (303) 692-
3575.
Sincerely,
Karen Harford, Administrative Assistant II
WATER QUALITY CONTROL DIVISION
Enclosures: Certification page; General Permit; Highlight Sheet; Termination form
xc: Permit File /keh cert
CERTIFICATION TO DISCHARGE
UNDER
CDPS GENERAL PERMIT COR-0300000
STORMWATER ASSOCIATED WITH CONSTRUCTION ACTIVITIES
Certification Number: COR03L459
This Certification to Discharge specifically authorizes:
Bella Vira Town Homes Inc
to discharge stormwater from the facility identified as
Bella Vira Town Homes Ph II
To the waters of the State of Colorado, including, but not limited to:
Spring Creek - Cache la Poudre River
Facility Industrial Activity : Multi-Family Residential Development,
Facility Located at: Overland Trail and W Elizabeth St, Fort Collins
Larimer County, CO 80521
Latitude 40.574675, Longitude -105.134622
Certification is effective: 11/19/2013 Certification Expires: 6/30/2012
ADMINISTRATIVELY CONTINUED
This certification under the permit requires that specific actions be performed at designated times. The
certification holder is legally obligated to comply with all terms and conditions of the permit.
Signed,
Nathan Moore
Construction/MS4/Pretreatment Unit Manager
Water Quality Control Division
Page 1 of 22
APPENDIX C
Stormwater Management Plan Inspection Reports
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COLORADO DEPARTMENT OF TRANSPORTATION
STORMWATER FIELD INSPECTION REPORT - POST CONSTRUCTION
(1) Project Name:
(6) CDOT Project Number:
(7) Project Code (Sub Account #): (9) CDOT
Region:
(2) Maintenance Patrol/Representative: (3) SWMP Administrator:
(8) CDPS-SCP Certification#:
(4) Inspector(s) (Name and Title):
(10) Date of Project Inspection:
(5) Weather at Time of Inspection:
(11) REASON FOR INSPECTION / EXCLUSION
❑ 30 Calendar day:
❑ Third Party Request:
❑ Winter Conditions Inspections Exclusion: Inspections are not required at sites where snow cover exists over the entire site for an extended
period, and melting conditions posing a risk of surface erosion do not exist. This exception is applicable only during the period where melting
conditions do not exist. If visual inspection of the site verifies that all of these conditions are satisfied, document the conditions in section 17 (General
Notes) and proceed to section 18 (Inspection Certification). Documentation must include: dates when snow cover occurred, and date when melting
conditions began.
❑ Other:
(12) SWMP MANAGEMENT (13) DESCRIPTION OF PROJECT:
Yes No NA
(a) Are changes to the SWMP documents noted
and approved?
(b) Are the 30 day inspection reports retained with
the SWMP notebook?
(c) Are corrective actions from the last inspection
completed?
(14) BMPs ON SITE AT TIME OF INSPECTION *See Inspection Report Instructions for more detail.
Installed Installed Installed Installed
Check Dams* ❑ Seeding ❑ Inlet Protection* ❑ Other: ❑
Embankment Protector ❑ Mulching/Mulch Tackifier ❑ Outlet Protection* ❑ Other: ❑
Sediment Basin/
Detention Pond ❑ Soil Retention Blankets ❑ Other: ❑ Other: ❑
(15) CONSTRUCTION SITE ASSESSMENT & CORRECTIVE ACTIONS **Off site Pollutant Discharges are a Violation of the Permit**
The construction site perimeter and revegetated areas that are exposed to precipitation shall be inspected for erosion and the
evidence of, or the potential for, pollutants leaving the CDOT right of way, entering the stormwater drainage system, or discharging
to state waters. If there is evidence of sediment or other pollutants discharging from the site, see section 16 (Construction Site
Assessment).
All erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are maintained and
operating correctly. Identify the condition of the BMP, using more than one letter if necessary: (I) Incorrect Installation; (M)
Maintenance is needed; (F) BMP failed to operate; (A) Additional BMP is needed; (R) Remove BMP. Keep copies of this blank page
for additional room if needed.
Continuous maintenance is required on all BMPs. BMPs that are not operating effectively, have proven to be inadequate, or
have failed must be addressed as soon as possible, immediately in most cases.
Location BMP Condition
Date
Completed
& Initials
Comments:
Description of Corrective Action and Preventative Measure
Taken (Include Picture #)
page 1 of 4 CDOT Form #1177 3/08
(15) CONSTRUCTION SITE ASSESSMENT & CORRECTIVE ACTIONS (continued)
Location BMP Condition
Date
Completed
& Initials
Comments:
Description of Corrective Action and Preventative Measure
Taken (Include Picture #)
(16) CONSTRUCTION SITE ASSESSMENT:**OFF SITE POLLUTANT DISCHARGES ARE A VIOLATION OF THE PERMIT**
(a) Is there evidence of discharge of sediment or other pollutants from the site? ❑ Yes ❑ No
*If yes, explain the discharge and the corrective actions in section 15 (Construction Site Assessment & Corrective Actions)
or section 17 (General Notes).
(b) Has sediment or other pollutants discharging from the site reached state waters? ❑ Yes ❑ No
*If yes, see subsection 208.03(c) and Part II A.2 and 3 of the permit for reporting requirements.
(c) Is the amount of vegetation 70% of pre-existing vegetative cover? ❑ Yes ❑ No
*If yes, notify the appropriate Region Environmental contact.
(17) GENERAL NOTES
Corrective action(s) has been taken, or where a report does not identify any incidents requiring corrective action, the report shall
contain a signed statement indicating the site is in compliance with the permit to the best of the signer’s knowledge and belief.
CDOT Maintenance/SWMP Administrator (Signature Required) Date:
(19) COMPLIANCE CERTIFICATION
page 2 of 4 CDOT Form #1177 3/08
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.
(18) INSPECTION CERTIFICATION
CDOT Maintenance/SWMP Administrator (Signature Required) Date:
Stormwater Management Field Inspection Report Instructions
State waters are defined to be any and all surface and subsurface waters which are contained in or flow through the state, including, streams,
rivers, lakes, drainage ditches, storm drains, ground water, and wetlands, but not including waters in sewage systems, waters in treatment
works or disposal systems, waters in potable water distribution systems, and all water withdrawn for use until use and treatment have been
completed. (Per subsection 107.25 and 25-8-103 (19) CRS)
(3) SWMP Administrator: Indicate the name of the individual(s) responsible for implementing, maintaining, and revising SWMP.
(8) CDPS-SCP Certification #: Indicate the Colorado Discharge Permit System (CDPS) Stormwater Construction Permit (SCP) (for Stormwater
Discharges Associated with Construction Activities) certification number, issued by CDPHE, for the project which the report is being completed.
Certification number can be found on the first page of the SCP.
(11) Reason(s) for Inspection or Exclusion: Indicate the purpose for the inspection or exclusion. These inspections are required to comply
with the CDOT Specifications and the CDPS-SCP.
❑ 30 Calendar Day. For sites where construction activities are completed. The permittee shall make a thorough inspection of the stormwater
management system every thirty days; post-storm event inspections are not required.
❑ Third Party Request. Indicate the name of the third party requesting the inspection and, if known, the reason the request was made.
❑ Winter Conditions Inspections Exclusions. See Page 1 for definition. An inspection does not need to be completed, but use this form to
document the conditions that meet the Exclusion.
❑ Other. Specify any other reason(s) that resulted in the inspection.
(12) SWMP Management: Review the SWMP records and documents and use a ✔ to answer the question. To comply with CDOT Standard
Specifications and the CDPS-SCP, all of the items identified must be adhered to. If No is checked, document the reason and indicate the
necessary corrective action in section 15 (Construction Site Assessment & Corrective Actions). If NA is checked, indicate why in the space
provided or indicate in section 17 (General Notes).
(a) Are changes to the SWMP noted and approved on the plans? Indicate all changes that have been made to any portion of the SWMP
notebook documents during inspections. Changes shall be dated and signed at the time of occurrence. Amendments may include items listed
in subsection 208.03(c).
(b) Are 30 day inspection reports retained with the SWMP? The SWMP Administrator shall keep a record of inspections. Inspection reports
must identify any incidents of non-compliance with the terms and conditions of CDOT specifications or the CDPS-SCP. Inspection records
must be retained for three years from expiration or inactivation of permit coverage.
(c) Are corrective actions from the last inspection completed? Have corrective actions from the last inspection been addressed? Is a descrip-
tion of the corrective action(s), the date(s) the corrective action(s) was taken, and measure(s) taken to prevent future violations (including
changes to the SWMP, as necessary) documented?
(13) Description of Project Activities: Provide a short description of the original construction project.
(14) BMPs On Site at Time of Inspection: Indicate the BMPs that are installed on-site at the time of inspection. Indicate by placing a ✔ in the
Installed column. All BMP details (e.g., Standard Plan M-208-1) shall be included with the SWMP documents.
-Check Dams (e.g., rock check, erosion logs, erosion bales, silt berms, etc.)
-Embankment Protector (e.g., slope drains, open-chute drains, etc.)
-Inlet Protection (e.g., erosion logs, erosion bales, sand bags, gravel bags, etc.)
-Outlet Protection (e.g., riprap, erosion log around top of headwall, etc.)
-Other: Provide a description of a BMP implemented on site that is not listed above.
(15) Construction Site Assessment & Corrective Actions: Inspect the construction site and indicate where BMP feature(s), identified in
section 14 (BMPs On Site at Time of Inspection), require corrective action. Erosion and sediment control practices identified in the SWMP shall
be evaluated to ensure that they are operating correctly.
- Location. Site location (e.g., project station number, mile marker, intersection quadrant, etc.)
- BMP. Indicate the type of BMP at this location that requires corrective action (e.g., silt fence, erosion logs, soil retention blankets, etc.).
- Condition. Identify the condition of the BMP, using more than one letter (identified in section 15) if necessary.
- Description of Corrective Action and Preventative Measure Taken. Provide the proposed corrective action needed to bring the area or BMP
into compliance. Once corrective actions are completed, state the measures taken to prevent future violations and ensure that the BMPs are
operating correctly, including the requisite changes made to the SWMP. If pictures were taken, indicate the photo number (if in digital format).
- Date Completed & Initials. Date and initial when the corrective action was completed and the preventative measure statement finished. If
confirmation that the item was completed is sent via email, print out and attach it to this inspection form.
(16) Construction Site Assessment: Was there any off site discharge of sediment at this site since the last inspection?
(a) Is there evidence of discharge of sediment or other pollutants from the site? Off site pollutant discharges are a violation of the permit.
The construction site perimeter, all areas exposed to precipitation, and discharge locations shall be inspected for evidence of, or the potential
for, pollutants leaving the construction site boundaries, entering the stormwater drainage system, or discharging to state waters.
(b) Has sediment or other pollutants discharging from the site reached state waters? Off site pollutant discharges are a violation of the
permit. If off site discharge has occurred, explain the discharge and the corrective actions in section 15 (Construction Site Assessment &
Corrective Actions) or section 17 (General Notes).
(c) Is the amount of vegetation 70% of pre-existing cover? Has uniform vegetative cover been established with a density of at least 70 percent
of pre-disturbance levels? If yes, the permit may be inactivated, notify the Region Environmental contact for verification.
(17) General Notes: Indicate any additional notes that add detail to the inspection, this may include positive practices noted on the project.
(18) Inspection Certification: In accordance with Part I, F.1.c of the CDPS-SCP, all reports for submittal shall be signed and certified for
(15) CONSTRUCTION SITE ASSESSMENT & CORRECTIVE ACTIONS (continued) **Off site Pollutant Discharges are a Violation of the Permit**
The construction site perimeter and revegetated areas that are exposed to precipitation shall be inspected for erosion and the evidence of, or the
potential for, pollutants leaving the CDOT right of way, entering the stormwater drainage system, or discharging to state waters. If there is evidence of
sediment or other pollutants discharging from the site, see section 16 (Construction Site Assessment).
All erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are maintained and operating correctly. Identify
the condition of the BMP, using more than one letter if necessary: (I) Incorrect Installation; (M) Maintenance is needed; (F) BMP failed to operate; (A)
Additional BMP is needed; (R) Remove BMP. Keep copies of this blank page for additional room if needed.
Continuous maintenance is required on all BMPs. BMPs that are not operating effectively, have proven to be inadequate, or have failed must be
addressed as soon as possible, immediately in most cases.
Location BMP Condition
Date
Completed
& Initials
Comments:
Description of Corrective Action and Preventative Measure
Taken (Include Picture #)
page4 of 4 CDOT Form #1177 3/08
APPENDIX D
Contractor Inserts (as needed)
accuracy.
(19) Compliance Certification: In accordance with Part I, D.6.b.2.viii of the CDPS-SCP, compliance shall be certified through signature.
page3 of 4 CDOT Form #1177 3/08
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1!# 1/) / = / :
f 80 * * < &!
EXACT LOCATION.
6. THIS SEDIMENT/EROSION CONTROL PLAN SERVES ONLY
AS A GUIDELINE TO THE CONTRACTOR.
STAGING/PHASING OF THE BMPS SHOWN ON THIS PLAN IS
EXPECTED. ADDITIONAL AND/OR DIFFERENT BMPs FROM
THOSE SHOWN MAY BE NECESSARY DURING
CONSTRUCTION AS REQUIRED BY LOCAL AUTHORITIES. IN
NO WAY SHALL THIS PLAN REPLACE THE CONTRACTOR'S
OBLIGATIONS FOR PERMITTING (CITY, STATE DISCHARGE
PERMIT, ETC.) OR COMPLIANCE WITH GOVERNING
AUTHORITIES. IT SHALL BE THE RESPONSIBILITY OF THE
CONTRACTOR (OR PERMIT HOLDER) TO ENSURE
SEDIMENT/EROSION CONTROL MEASURES ARE PROPERLY
IMPLEMENTED AND MAINTAINED.
7. SLOPE PROTECTION - CONTRACTOR TO TERRACE SLOPES
USING A "TRACKED" VEHICLE, RUN PERPENDICULAR TO
SLOPE TO INHIBIT RILL/GULLEY EROSION, CONTRACTOR
MAY USE OTHER WINDROW-TYPE METHODS AS
APPROVED BY ENGINEER. TYPICAL ALL SLOPES, REPEAT
AS NECESSARY UNTIL LANDSCAPING IS INSTALLED.
8. CONTRACTOR TO PROVIDE VEHICLE TRACKING CONTROL
FOR CONCRETE WASHOUT AREA IF ACCESS IS OFF
PAVEMENT.
9. LOCATION OF CONCRETE WASH-OUT AREA, PORTABLE
TOILETS, STORAGE/STAGING AREA TO BE AT THE
DISCRETION OF THE CONTRACTOR AND MAY BE
RELOCATED FROM THE DESIGNATED AREAS SHOWN ON
THE PLAN.
10. PERMANENT REINFORCEMENT MATS (TRM) SHALL BE
NORTH AMERICAN GREEN VMAX SC250 OR APPROVED
EQUAL. TEMPORARY EROSION CONTROL BLANKETS (ECB)
SHALL BE NORTH AMERICAN GREEN ERONET S75 OR
APPROVED EQUAL.
11. ANY AREAS USED FOR STOCKPILING AND/OR STAGING
SHOULD ALSO HAVE SEDIMENT AND EROSION CONTROL
MEASURES AS NECESSARY. THESE AREAS SHOULD BE
LOCATED AT LEAST 100' AWAY FROM DRAINAGE WAYS.
THE SWMP SHOULD BE UPDATED TO SHOW THESE AREAS
AND SEDIMENT AND EROSION CONTROL ITEMS. THE
ITEMS MAY INCLUDE BUT ARE NOT LIMITED TO VEHICLE
TRACKING CONTROL, SILT FENCE, CONSTRUCTION FENCE,
CONCRETE WASHOUT, AND SEDIMENT TRAP.
12. TEMPORARY SEEDING SHALL BE UTILIZED IN THE EVENT
THAT A GRADED AREA IS EXPOSED LONGER THAN 30
DAYS. THE SITE SHALL BE SEEDED WITH 100% SMOOTH
BROME AT A MINIMUM APPLICATION RATE OF 30
PLS/LBS/ACRE.
PROPOSED 1' CONTOUR
EXISTING 1' CONTOUR
STORM SEWER
STORM INLET
RETAINING WALL
SF SILT FENCE
VEHICLE TRACKING
CONTROL PAD
RIPRAP PAD
EROSION CONTROL
BLANKETS
(SEE NOTE 10)
BIOSWALE
WATTLE DIKE
CONCRETE
WASHOUT AREA -
FINAL LOCATION
TO BE DETERMINED
BY CONTRACTOR
SLOPE PROTECTION
(SEE NOTE 7)
DROP INLET
PROTECTION
TURF
REINFORCEMENT
MAT (SEE NOTE 10)
ROCK SOCK
0 30' 60'
SCALE: 1" = 30'
15'
STORMWATER MANAGEMENT PLAN
BLANK VERSION
SWMP-5
SWMP SITE PLAN NOTES:
1. THE CDPHE COLORADO DISCHARGE PERMIT SYSTEM REQUIRES THAT COPY OF THE
SWMP REPORT, AN UPDATED SWMP SITE PLAN, AND A RECORD OF MAINTENANCE &
INSPECTIONS BE KEPT ON THE JOB SITE AT ALL TIMES. MULTIPLE COPIES OF THIS SWMP
SITE PLAN HAVE BEEN INCLUDED IN THE SWMP REPORT TO ALLOW THE CONTRACTOR TO
SHOW THE SITE BMP'S AT DIFFERENT STAGES OF CONSTRUCTION.
2. THIS SWMP SITE PLAN IS A BLANK VERSION THAT CAN BE FILLED IN BY THE CONTRACTOR
AS BMP ITEMS ARE INSTALLED ON THE PROJECT. SEE SEPARATE EROSION CONTROL
PLAN C-6.0, OF THE CONSTRUCTION PLAN SET FOR OTHER ITEMS REQUIRED FOR
INFRASTRUCTURE CONSTRUCTION.
IMPERVIOUS PARKING
& DRIVEWAY FOOTPRINT
IMPERVIOUS
BUILDING FOOTPRINT
BUILDING 3
BUILDING 4
BUILDING 2
BUILDING 5
BUILDING 6
BUILDING 1
PREPARED FOR: DATE SUBMITTED:
The engineer preparing these plans will not be responsible for, or
liable for, unauthorized changes to or uses of these plans. All
changes to the plans must be in writing and must be approved by
the preparer of these plans.
CAUTION
BELLA VIRA TOWNHOMES INC. 02/12/2014
BELLA VIRA SUBDIVISION FILING TWO
5
U13012
PRELIMINARY
PLANS
NOT FOR CONSTRUCTION
Civil Engineering & Consulting
1501 Academy Court, Suite 203
Fort Collins, CO 80524
(970) 530-4044
www.unitedcivil.com
LEGEND
NOTES
1. SEE "STANDARD GRADING AND EROSION AND SEDIMENT
CONTROL CONSTRUCTION PLAN NOTES" ON SHEET
SWMP-1.
2. ALL DISTURBED AREAS NOT ASSOCIATED WITH PARKING
LOT/BUILDING AREAS SHALL BE LANDSCAPED OR SEEDED
AND MULCHED AS SOON AS POSSIBLE IN ACCORDANCE
WITH THE LANDSCAPING PLANS AND/OR LOCAL CRITERIA.
3. CONTRACTOR SHALL IMMEDIATELY STABILIZE ALL
DISTURBED SLOPES BY CRIMP MULCHING OR SIMILAR
METHODS.
TOTAL DISTURBED AREA = 3.4 ACRES
4. CONSTRUCTION SITE OPERATOR:
AGGIE ENVIRONMENTAL SERVICES INC.
5. THIS SEDIMENT/EROSION CONTROL PLAN IS SCHEMATIC IN
NATURE. AS SUCH, GRAPHICAL SYMBOLS MAY NOT BE TO
SCALE, NOR ARE THEY NECESSARILY SHOWN IN THEIR
EXACT LOCATION.
6. THIS SEDIMENT/EROSION CONTROL PLAN SERVES ONLY
AS A GUIDELINE TO THE CONTRACTOR.
STAGING/PHASING OF THE BMPS SHOWN ON THIS PLAN IS
EXPECTED. ADDITIONAL AND/OR DIFFERENT BMPs FROM
THOSE SHOWN MAY BE NECESSARY DURING
CONSTRUCTION AS REQUIRED BY LOCAL AUTHORITIES. IN
NO WAY SHALL THIS PLAN REPLACE THE CONTRACTOR'S
OBLIGATIONS FOR PERMITTING (CITY, STATE DISCHARGE
PERMIT, ETC.) OR COMPLIANCE WITH GOVERNING
AUTHORITIES. IT SHALL BE THE RESPONSIBILITY OF THE
CONTRACTOR (OR PERMIT HOLDER) TO ENSURE
SEDIMENT/EROSION CONTROL MEASURES ARE PROPERLY
IMPLEMENTED AND MAINTAINED.
7. SLOPE PROTECTION - CONTRACTOR TO TERRACE SLOPES
USING A "TRACKED" VEHICLE, RUN PERPENDICULAR TO
SLOPE TO INHIBIT RILL/GULLEY EROSION, CONTRACTOR
MAY USE OTHER WINDROW-TYPE METHODS AS
APPROVED BY ENGINEER. TYPICAL ALL SLOPES, REPEAT
AS NECESSARY UNTIL LANDSCAPING IS INSTALLED.
8. CONTRACTOR TO PROVIDE VEHICLE TRACKING CONTROL
FOR CONCRETE WASHOUT AREA IF ACCESS IS OFF
PAVEMENT.
9. LOCATION OF CONCRETE WASH-OUT AREA, PORTABLE
TOILETS, STORAGE/STAGING AREA TO BE AT THE
DISCRETION OF THE CONTRACTOR AND MAY BE
RELOCATED FROM THE DESIGNATED AREAS SHOWN ON
THE PLAN.
10. PERMANENT REINFORCEMENT MATS (TRM) SHALL BE
NORTH AMERICAN GREEN VMAX SC250 OR APPROVED
EQUAL. TEMPORARY EROSION CONTROL BLANKETS (ECB)
SHALL BE NORTH AMERICAN GREEN ERONET S75 OR
APPROVED EQUAL.
11. ANY AREAS USED FOR STOCKPILING AND/OR STAGING
SHOULD ALSO HAVE SEDIMENT AND EROSION CONTROL
MEASURES AS NECESSARY. THESE AREAS SHOULD BE
LOCATED AT LEAST 100' AWAY FROM DRAINAGE WAYS.
THE SWMP SHOULD BE UPDATED TO SHOW THESE AREAS
AND SEDIMENT AND EROSION CONTROL ITEMS. THE
ITEMS MAY INCLUDE BUT ARE NOT LIMITED TO VEHICLE
TRACKING CONTROL, SILT FENCE, CONSTRUCTION FENCE,
CONCRETE WASHOUT, AND SEDIMENT TRAP.
12. TEMPORARY SEEDING SHALL BE UTILIZED IN THE EVENT
THAT A GRADED AREA IS EXPOSED LONGER THAN 30
DAYS. THE SITE SHALL BE SEEDED WITH 100% SMOOTH
BROME AT A MINIMUM APPLICATION RATE OF 30
PLS/LBS/ACRE.
PROPOSED 1' CONTOUR
EXISTING 1' CONTOUR
STORM SEWER
STORM INLET
RETAINING WALL
SF SILT FENCE
VEHICLE TRACKING
CONTROL PAD
RIPRAP PAD
EROSION CONTROL
BLANKETS
(SEE NOTE 10)
BIOSWALE
WATTLE DIKE
CONCRETE
WASHOUT AREA -
FINAL LOCATION
TO BE DETERMINED
BY CONTRACTOR
SLOPE PROTECTION
(SEE NOTE 7)
DROP INLET
PROTECTION
TURF
REINFORCEMENT
MAT (SEE NOTE 10)
ROCK SOCK
0 30' 60'
SCALE: 1" = 30'
15'
STORMWATER MANAGEMENT PLAN
PHASE 3
SWMP-4
SWMP SITE PLAN NOTES:
1. THE CDPHE COLORADO DISCHARGE PERMIT SYSTEM REQUIRES THAT COPY OF THE
SWMP REPORT, AN UPDATED SWMP SITE PLAN, AND A RECORD OF MAINTENANCE &
INSPECTIONS BE KEPT ON THE JOB SITE AT ALL TIMES. MULTIPLE COPIES OF THIS SWMP
SITE PLAN HAVE BEEN INCLUDED IN THE SWMP REPORT TO ALLOW THE CONTRACTOR TO
SHOW THE SITE BMP'S AT DIFFERENT STAGES OF CONSTRUCTION.
PLANS
NOT FOR CONSTRUCTION
Civil Engineering & Consulting
1501 Academy Court, Suite 203
Fort Collins, CO 80524
(970) 530-4044
www.unitedcivil.com
LEGEND
NOTES
1. SEE "STANDARD GRADING AND EROSION AND SEDIMENT
CONTROL CONSTRUCTION PLAN NOTES" ON SHEET
SWMP-1.
2. ALL DISTURBED AREAS NOT ASSOCIATED WITH PARKING
LOT/BUILDING AREAS SHALL BE LANDSCAPED OR SEEDED
AND MULCHED AS SOON AS POSSIBLE IN ACCORDANCE
WITH THE LANDSCAPING PLANS AND/OR LOCAL CRITERIA.
3. CONTRACTOR SHALL IMMEDIATELY STABILIZE ALL
DISTURBED SLOPES BY CRIMP MULCHING OR SIMILAR
METHODS.
TOTAL DISTURBED AREA = 3.4 ACRES
4. CONSTRUCTION SITE OPERATOR:
AGGIE ENVIRONMENTAL SERVICES INC.
5. THIS SEDIMENT/EROSION CONTROL PLAN IS SCHEMATIC IN
NATURE. AS SUCH, GRAPHICAL SYMBOLS MAY NOT BE TO
SCALE, NOR ARE THEY NECESSARILY SHOWN IN THEIR
EXACT LOCATION.
6. THIS SEDIMENT/EROSION CONTROL PLAN SERVES ONLY
AS A GUIDELINE TO THE CONTRACTOR.
STAGING/PHASING OF THE BMPS SHOWN ON THIS PLAN IS
EXPECTED. ADDITIONAL AND/OR DIFFERENT BMPs FROM
THOSE SHOWN MAY BE NECESSARY DURING
CONSTRUCTION AS REQUIRED BY LOCAL AUTHORITIES. IN
NO WAY SHALL THIS PLAN REPLACE THE CONTRACTOR'S
OBLIGATIONS FOR PERMITTING (CITY, STATE DISCHARGE
PERMIT, ETC.) OR COMPLIANCE WITH GOVERNING
AUTHORITIES. IT SHALL BE THE RESPONSIBILITY OF THE
CONTRACTOR (OR PERMIT HOLDER) TO ENSURE
SEDIMENT/EROSION CONTROL MEASURES ARE PROPERLY
IMPLEMENTED AND MAINTAINED.
7. SLOPE PROTECTION - CONTRACTOR TO TERRACE SLOPES
USING A "TRACKED" VEHICLE, RUN PERPENDICULAR TO
SLOPE TO INHIBIT RILL/GULLEY EROSION, CONTRACTOR
MAY USE OTHER WINDROW-TYPE METHODS AS
APPROVED BY ENGINEER. TYPICAL ALL SLOPES, REPEAT
AS NECESSARY UNTIL LANDSCAPING IS INSTALLED.
8. CONTRACTOR TO PROVIDE VEHICLE TRACKING CONTROL
FOR CONCRETE WASHOUT AREA IF ACCESS IS OFF
PAVEMENT.
9. LOCATION OF CONCRETE WASH-OUT AREA, PORTABLE
TOILETS, STORAGE/STAGING AREA TO BE AT THE
DISCRETION OF THE CONTRACTOR AND MAY BE
RELOCATED FROM THE DESIGNATED AREAS SHOWN ON
THE PLAN.
10. PERMANENT REINFORCEMENT MATS (TRM) SHALL BE
NORTH AMERICAN GREEN VMAX SC250 OR APPROVED
EQUAL. TEMPORARY EROSION CONTROL BLANKETS (ECB)
SHALL BE NORTH AMERICAN GREEN ERONET S75 OR
APPROVED EQUAL.
11. ANY AREAS USED FOR STOCKPILING AND/OR STAGING
SHOULD ALSO HAVE SEDIMENT AND EROSION CONTROL
MEASURES AS NECESSARY. THESE AREAS SHOULD BE
LOCATED AT LEAST 100' AWAY FROM DRAINAGE WAYS.
THE SWMP SHOULD BE UPDATED TO SHOW THESE AREAS
AND SEDIMENT AND EROSION CONTROL ITEMS. THE
ITEMS MAY INCLUDE BUT ARE NOT LIMITED TO VEHICLE
TRACKING CONTROL, SILT FENCE, CONSTRUCTION FENCE,
CONCRETE WASHOUT, AND SEDIMENT TRAP.
12. TEMPORARY SEEDING SHALL BE UTILIZED IN THE EVENT
THAT A GRADED AREA IS EXPOSED LONGER THAN 30
DAYS. THE SITE SHALL BE SEEDED WITH 100% SMOOTH
BROME AT A MINIMUM APPLICATION RATE OF 30
PLS/LBS/ACRE.
PROPOSED 1' CONTOUR
EXISTING 1' CONTOUR
STORM SEWER
STORM INLET
RETAINING WALL
SF SILT FENCE
VEHICLE TRACKING
CONTROL PAD
RIPRAP PAD
EROSION CONTROL
BLANKETS
(SEE NOTE 10)
BIOSWALE
WATTLE DIKE
CONCRETE
WASHOUT AREA -
FINAL LOCATION
TO BE DETERMINED
BY CONTRACTOR
SLOPE PROTECTION
(SEE NOTE 7)
DROP INLET
PROTECTION
TURF
REINFORCEMENT
MAT (SEE NOTE 10)
ROCK SOCK
0 30' 60'
SCALE: 1" = 30'
15'
STORMWATER MANAGEMENT PLAN
PHASE 2
SWMP-3
SWMP SITE PLAN NOTES:
1. THE CDPHE COLORADO DISCHARGE PERMIT SYSTEM REQUIRES THAT COPY OF THE
SWMP REPORT, AN UPDATED SWMP SITE PLAN, AND A RECORD OF MAINTENANCE &
INSPECTIONS BE KEPT ON THE JOB SITE AT ALL TIMES. MULTIPLE COPIES OF THIS SWMP
SITE PLAN HAVE BEEN INCLUDED IN THE SWMP REPORT TO ALLOW THE CONTRACTOR TO
SHOW THE SITE BMP'S AT DIFFERENT STAGES OF CONSTRUCTION.
PLANS
NOT FOR CONSTRUCTION
Civil Engineering & Consulting
1501 Academy Court, Suite 203
Fort Collins, CO 80524
(970) 530-4044
www.unitedcivil.com
LEGEND
NOTES
1. SEE "STANDARD GRADING AND EROSION AND SEDIMENT
CONTROL CONSTRUCTION PLAN NOTES" ON SHEET
SWMP-1.
2. ALL DISTURBED AREAS NOT ASSOCIATED WITH PARKING
LOT/BUILDING AREAS SHALL BE LANDSCAPED OR SEEDED
AND MULCHED AS SOON AS POSSIBLE IN ACCORDANCE
WITH THE LANDSCAPING PLANS AND/OR LOCAL CRITERIA.
3. CONTRACTOR SHALL IMMEDIATELY STABILIZE ALL
DISTURBED SLOPES BY CRIMP MULCHING OR SIMILAR
METHODS.
TOTAL DISTURBED AREA = 3.4 ACRES
4. CONSTRUCTION SITE OPERATOR:
AGGIE ENVIRONMENTAL SERVICES INC.
5. THIS SEDIMENT/EROSION CONTROL PLAN IS SCHEMATIC IN
NATURE. AS SUCH, GRAPHICAL SYMBOLS MAY NOT BE TO
SCALE, NOR ARE THEY NECESSARILY SHOWN IN THEIR
EXACT LOCATION.
6. THIS SEDIMENT/EROSION CONTROL PLAN SERVES ONLY
AS A GUIDELINE TO THE CONTRACTOR.
STAGING/PHASING OF THE BMPS SHOWN ON THIS PLAN IS
EXPECTED. ADDITIONAL AND/OR DIFFERENT BMPs FROM
THOSE SHOWN MAY BE NECESSARY DURING
CONSTRUCTION AS REQUIRED BY LOCAL AUTHORITIES. IN
NO WAY SHALL THIS PLAN REPLACE THE CONTRACTOR'S
OBLIGATIONS FOR PERMITTING (CITY, STATE DISCHARGE
PERMIT, ETC.) OR COMPLIANCE WITH GOVERNING
AUTHORITIES. IT SHALL BE THE RESPONSIBILITY OF THE
CONTRACTOR (OR PERMIT HOLDER) TO ENSURE
SEDIMENT/EROSION CONTROL MEASURES ARE PROPERLY
IMPLEMENTED AND MAINTAINED.
7. SLOPE PROTECTION - CONTRACTOR TO TERRACE SLOPES
USING A "TRACKED" VEHICLE, RUN PERPENDICULAR TO
SLOPE TO INHIBIT RILL/GULLEY EROSION, CONTRACTOR
MAY USE OTHER WINDROW-TYPE METHODS AS
APPROVED BY ENGINEER. TYPICAL ALL SLOPES, REPEAT
AS NECESSARY UNTIL LANDSCAPING IS INSTALLED.
8. CONTRACTOR TO PROVIDE VEHICLE TRACKING CONTROL
FOR CONCRETE WASHOUT AREA IF ACCESS IS OFF
PAVEMENT.
9. LOCATION OF CONCRETE WASH-OUT AREA, PORTABLE
TOILETS, STORAGE/STAGING AREA TO BE AT THE
DISCRETION OF THE CONTRACTOR AND MAY BE
RELOCATED FROM THE DESIGNATED AREAS SHOWN ON
THE PLAN.
10. PERMANENT REINFORCEMENT MATS (TRM) SHALL BE
NORTH AMERICAN GREEN VMAX SC250 OR APPROVED
EQUAL. TEMPORARY EROSION CONTROL BLANKETS (ECB)
SHALL BE NORTH AMERICAN GREEN ERONET S75 OR
APPROVED EQUAL.
11. ANY AREAS USED FOR STOCKPILING AND/OR STAGING
SHOULD ALSO HAVE SEDIMENT AND EROSION CONTROL
MEASURES AS NECESSARY. THESE AREAS SHOULD BE
LOCATED AT LEAST 100' AWAY FROM DRAINAGE WAYS.
THE SWMP SHOULD BE UPDATED TO SHOW THESE AREAS
AND SEDIMENT AND EROSION CONTROL ITEMS. THE
ITEMS MAY INCLUDE BUT ARE NOT LIMITED TO VEHICLE
TRACKING CONTROL, SILT FENCE, CONSTRUCTION FENCE,
CONCRETE WASHOUT, AND SEDIMENT TRAP.
12. TEMPORARY SEEDING SHALL BE UTILIZED IN THE EVENT
THAT A GRADED AREA IS EXPOSED LONGER THAN 30
DAYS. THE SITE SHALL BE SEEDED WITH 100% SMOOTH
BROME AT A MINIMUM APPLICATION RATE OF 30
PLS/LBS/ACRE.
PROPOSED 1' CONTOUR
EXISTING 1' CONTOUR
STORM SEWER
STORM INLET
RETAINING WALL
SF SILT FENCE
VEHICLE TRACKING
CONTROL PAD
RIPRAP PAD
EROSION CONTROL
BLANKETS
(SEE NOTE 10)
BIOSWALE
WATTLE DIKE
CONCRETE
WASHOUT AREA -
FINAL LOCATION
TO BE DETERMINED
BY CONTRACTOR
SLOPE PROTECTION
(SEE NOTE 7)
DROP INLET
PROTECTION
TURF
REINFORCEMENT
MAT (SEE NOTE 10)
ROCK SOCK
0 30' 60'
SCALE: 1" = 30'
15'
STORMWATER MANAGEMENT PLAN
PHASE 1
SWMP-2
SWMP SITE PLAN NOTES:
1. THE CDPHE COLORADO DISCHARGE PERMIT SYSTEM REQUIRES THAT COPY OF THE
SWMP REPORT, AN UPDATED SWMP SITE PLAN, AND A RECORD OF MAINTENANCE &
INSPECTIONS BE KEPT ON THE JOB SITE AT ALL TIMES. MULTIPLE COPIES OF THIS SWMP
SITE PLAN HAVE BEEN INCLUDED IN THE SWMP REPORT TO ALLOW THE CONTRACTOR TO
SHOW THE SITE BMP'S AT DIFFERENT STAGES OF CONSTRUCTION.
B. Remain in place until such time as all the surrounding disturbed areas are sufficiently stabilized as determined by the erosion control inspector.
C. Be removed after the site has been sufficiently stabilized as determined by the erosion control inspector.
8. When temporary erosion control measures are removed, the developer shall be responsible for the cleanup and removal of all sediment and debris from
all drainage infrastructure and other public facilities.
9. The contractor shall immediately clean up any construction materials inadvertently deposited on existing streets, sidewalks, or other public rights of way,
and make sure streets and walkways are cleaned at the end of each working day.
10. 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 waters of the United States.
11. 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 thirty (30) days shall be seeded and mulched.
12. The storm water volume capacity of detention ponds will be restored and storm sewer lines will be cleaned upon completion of the project and before
turning the maintenance over to the city/county or Homeowners Association (HOA).
13. City ordinance and Colorado Discharge Permit System (CDPS) requirements make it unlawful to discharge or allow the discharge of any pollutant or
contaminated water from construction sites. Pollutants include, but are not limited to discarded building materials, concrete truck washout, chemicals, oil
and gas products, litter, and sanitary waste. The developer shall at all times take whatever measures are necessary to assure the proper containment
and disposal of pollutants on the site in accordance with any and all applicable local, state, and federal regulations.
14. A designated area shall be provided on site for concrete truck chute washout. The area shall be constructed so as to contain washout material and
located at least fifty (50) feet away from any waterway during construction. Upon completion of construction activities the concrete washout material will
be removed and properly disposed of prior to the area being restored.
15. Conditions in the field may warrant erosion control measures in addition to what is shown on these plans. The developer shall implement whatever
measures are determined necessary, as directed by the city/county.
16. A vehicle tracking control pad shall be installed when needed for construction equipment, including but not limited to personal vehicles exiting existing
roadways. No earthen materials, i.e. stone, dirt, etc. shall be placed in the curb & gutter or roadway as a ramp to access temporary stockpiles, staging
areas, construction materials, concrete washout areas, and/or building sites.
(SEE NOTES 1-2)
MINIMUM 6" THICK
PEA GRAVEL LAYER
MINIMUM 8" THICK
CDOT AGGREGATE
NO. 4 STORAGE/
FILTRATION LAYER
4" PERFORATED
UNDERDRAIN
UNDISTURBED
EARTH
CONNECT TO
PERFORATED HDPE
UNDERDRAIN WITH 4"
SOLID WALL HDPE PIPE
BACKFILL MATERIAL
FLOW DIRECTION
EXTEND SOLID WALL PIPE TO
POND (SEE GRADING PLAN)
BUILDING 2
BUILDING 1
BUILDING 5
BUILDING 6
2-FOOT
CONCRETE PAN
2' SIDEWALK
CHASE
WEST ELIZABETH
IMPROVEMENTS CURRENTLY
UNDER CONSTRUCTION
(SEE NOTE 2)
OVERLAND TRAIL WIDENING
IMPROVEMENTS CURRENTLY
UNDER CONSTRUCTION
(SEE NOTE 2)
Lot 18
Lot 19
LEVEL SPREADER
WITH BIOSWALE
MATERIAL
PREPARED FOR: DATE SUBMITTED:
The engineer preparing these plans will not be responsible for, or
liable for, unauthorized changes to or uses of these plans. All
changes to the plans must be in writing and must be approved by
the preparer of these plans.
CAUTION
BELLA VIRA TOWNHOMES INC. 02/12/2014
BELLA VIRA SUBDIVISION FILING TWO
26
U13012
PRELIMINARY
PLANS
NOT FOR CONSTRUCTION
Civil Engineering & Consulting
1501 Academy Court, Suite 203
Fort Collins, CO 80524
(970) 530-4044
www.unitedcivil.com
NONE KEVIN
D:\DROPBOX\PROJECTS\U13012 BELLA VIRA\CADD\CP
C4.00_GRADING & EROSION.DWG
2/12/2014 8:00:36 AM
SME
OVERALL GRADING & EROSION CONTROL PLAN
C4.00
N/A
CHECKED BY: 30'
CHECKED BY:
CHECKED BY:
CHECKED BY:
CHECKED BY:
APPROVED:
0 30' 60'
SCALE: 1" = 30'
15'
LEGEND
5124
5124
PROPOSED 1' CONTOUR
EXISTING 1' CONTOUR
STORM SEWER
STORM INLET
RETAINING WALL
NOTES
1. EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND
PRIVATE UTILITIES AS SHOWN ARE INDICATED ACCORDING TO
THE BEST INFORMATION AVAILABLE TO THE ENGINEER.
2. EXISTING INFORMATION AS SHOWN ON THIS PLAN IS PER
DESIGN INFORMATION PROVIDED BY JIM SELL DESIGN AS
SHOWN IN THE PHASE 1 CONSTRUCTION PLANS ENTITLED
"BELLA VIRA SUBDIVISION" AND DATED DECEMBER 7, 2007. AT
THE TIME OF THIS SUBMITTAL, CONSTRUCTION OF THE PHASE 1
BELLA VIRA IMPROVEMENTS IS NOT YET COMPLETE.
CONTRACTOR SHALL FIELD VERIFY ACTUAL CONDITIONS AT
ALL INTERFACES WITH PHASE 1 IMPROVEMENTS PRIOR TO THE
COMMENCEMENT OF FILING 2 CONSTRUCTION.
3. REFER TO SHEETS C4.01-C4.04 FOR DETAILED GRADING PLANS.
4. PERMANENT REINFORCEMENT MATS (TRM) SHALL BE NORTH
AMERICAN GREEN VMAX SC250 OR APPROVED EQUAL.
TEMPORARY EROSION CONTROL BLANKETS (ECB) SHALL BE
NORTH AMERICAN GREEN ERONET S75 OR APPROVED EQUAL.
5. REFER TO SECTION 3.4.1 OF THE LAND USE CODE FOR
ALLOWABLE USES WITHIN THE HABITAT BUFFER ZONE.
6. LANDSCAPING WITHIN THE HABITAT BUFFER ZONE SHALL
CONSIST OF NATIVE MATERIALS. REFER TO THE LANDSCAPE
PLANS.
7. VEGETATIVE SWALES, THE BIOSWALE, AND THE SNOUT BMP
SHALL BE MAINTAINED BY THE PROPERTY OWNER OR HOA AND
FOLLOW APPLICABLE STANDARD OPERATING PROCEDURES AS
SHOWN IN DRAINAGE REPORT FOR BELLA VIRA SUBDIVISION
FILING TWO.
SILT FENCE
VEHICLE TRACKING
CONTROL PAD
RIPRAP PAD
WATTLE DIKE
CONCRETE
WASHOUT AREA -
FINAL LOCATION
TO BE DETERMINED
BY CONTRACTOR
SLOPE PROTECTION
(SEE EROSION
CONTROL NOTE 5)
DROP INLET
PROTECTION
TURF
REINFORCEMENT
MAT (SEE NOTE 4)
BIOSWALE
ROCK SOCK
EROSION CONTROL
BLANKETS
(SEE NOTE 10)
1. THE SITE WILL BE LANDSCAPED TO FINAL STABILIZATION. SEE FINAL LANDSCAPE PLAN
FOR DETAILS.
2. REFER TO SHEET C-0.1 FOR STANDARD EROSION AND SEDIMENT CONTROL
CONSTRUCTION PLAN NOTES.
3. EROSION CONTROL PRACTICES, SITE PROTECTION, AND REVEGETATION METHODS
SHALL FOLLOW CITY REGULATIONS.
4. IN ADDITION TO THE EROSION CONTROL MEASURES SHOWN ON THIS DRAWING, THE
CONTRACTOR SHALL COORDINATE WITH, AND UPDATE AS REQUIRED, THE
STORMWATER MANAGEMENT PLAN (SWMP) FOR THIS PROJECT.
5. CONTRACTOR TO TERRACE SLOPES USING A "TRACKED" VEHICLE, RUN PERPENDICULAR
TO SLOPE TO INHIBIT RILL/GULLEY EROSION, CONTRACTOR MAY USE OTHER
WINDROW-TYPE METHODS AS APPROVED BY ENGINEER. TYPICAL ALL SLOPES, REPEAT
AS NECESSARY UNTIL LANDSCAPING IS INSTALLED.
6. ANY AREAS USED FOR STOCKPILING AND/OR STAGING SHOULD ALSO HAVE SEDIMENT
AND EROSION CONTROL MEASURES AS NECESSARY. THESE AREAS SHOULD BE
LOCATED AT LEAST 100' AWAY FROM DRAINAGE WAYS. THE SWMP SHOULD BE UPDATED
TO SHOW THESE AREAS AND SEDIMENT AND EROSION CONTROL ITEMS. THE ITEMS MAY
INCLUDE BUT ARE NOT LIMITED TO VEHICLE TRACKING CONTROL, SILT FENCE,
CONSTRUCTION FENCE, CONCRETE WASHOUT, AND SEDIMENT TRAP.
7. SOIL AMENDMENTS SHALL BE INCORPORATED IN ALL LANDSCAPE AREAS TO A DEPTH OF
6" AT A RATE OF 3 CUBIC YARDS PER 1000 SQUARE FEET OF AREA -OR- 4" OF LOOSE
TOPSOIL IMPORTED ONTO THE SITE OVER 4" OF LOOSENED SUBGRADE SOILS. REFER
TO CITY OF FORT COLLINS CODE SECTIONS 12-130 THROUGH 12-132.
8. TEMPORARY SEEDING SHALL BE UTILIZED IN THE EVENT THAT A GRADED AREA IS
EXPOSED LONGER THAN 30 DAYS. THE SITE SHALL BE SEEDED WITH 100% SMOOTH
BROME AT A MINIMUM APPLICATION RATE OF 30 PLS/LBS/ACRE.
9. A COMMERCIAL FERTILIZER WITH THE FOLLOWING SPECS SHALL BE USED: