HomeMy WebLinkAboutLAKEVIEW ON THE RISE, AFFORDABLE HOUSING - FDP - FDP170031 - SUBMITTAL DOCUMENTS - ROUND 2 - STORMWATER MANAGEMENT PLANStormwater Management Plan for
Lakeview on the Rise
Fort Collins, Colorado
Prepared By
Aspen Engineering
November 15, 2017
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TABLE OF CONTENTS
DESCRIPTION PAGE
I. GENERAL LOCATION AND SITE DESCRIPTION
A. Location 3
B. Description of Property 3
C. Description of Construction Activity 3
D. Activity Sequence 3
E. Areas 4
F. Hydrologic Criteria 4
G. Existing Ground Cover & Soil Amendments 5
H. Potential Pollution Sources 6
I. Non-Stormwater Discharge 8
J. Receiving Water 9
II. SITE MAP 9
III. STORMWATER MANAGEMENT CONTROLS 9
A. Erosion and Sediment Controls 9
B. SWMP Administrator 11
C. Material Handling and Spill Prevention 12
IV. OTHER CONTROLS 14
V. FINAL STABILIZATION AND LONGTERM STORMWATER MANAGEMENT 14
VI. INSPECTION AND MAINTENANCE 15
VII. REFERENCES 16
APPENDIX A 17
DAILY STORMWATER MANAGEMENT PLAN LOG
VICINITY MAP
EROSION CONTROL ESCROW CALCULATION (Excerpt from Drainage Report)
SWMP Plan Exhibits (EC-01 through EC-04)
Erosion Control Notes & Details Sheets (EC-05 and EC-06)
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STORMWATER MANAGEMENT PLAN
FOR LAKEVIEW ON THE RISE
FORT COLLINS, COLORADO
I. GENERAL LOCATION AND SITE DESCRIPTION
A. Location
The Lakeview on the Rise project is located east of and adjacent to South College
Avenue (U.S. Highway 287) and northeast of the intersection of Triangle Drive and
South College Avenue. The property is bounded to the west by South College Avenue,
to the north by an existing irrigation ditch, and to the south by Robert Benson Reservoir,
and to the east by Provincetown Filing Three subdivision.
The project site can also be described as situated in the northwest quarter of Section 13,
Township 6 North, Range 69 West of the 6th P.M., City of Fort Collins, County of
Larimer, State of Colorado.
B. Description of Property
The project site currently contains an existing 20.089-acre vacant field comprised of
primarily dirt with native weeds and grasses and portions of South College Avenue. The
site also contains one existing commercial building that is currently unoccupied and will
be removed prior to any proposed construction activities. Robert Benson Reservoir and
an associated wetland area bound the proposed site to the south.
The existing site has topography which generally slopes from the northwest to the south-
southeast at approximately 2.9%, with varying slopes from 2.0% to 5.0%.
C. Description of Construction Activity and Unloading & Loading of Materials
The proposed development consists of 17 apartment buildings, a Clubhouse with pool,
and associated street, water, sanitary sewer, storm sewer, and private infrastructure
improvements, as well as intermittent green spaces and outdoor spaces.
D. Activity Sequence
The major activity sequence for the project will be as follows:
1) Installation of the required erosion and sediment control measures;
2) Topsoil excavation and stockpiling on-site.
3) Demolition of curb and gutter, asphalt, clear and grubbing.
4) Overlot grading, including roadways, access drives, drive aisles, and
parking lot areas.
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5) Excavation and grading of the swale areas and pond.
6) The required erosion control measures will be installed for the stormwater
system, swales, and existing inlets.
7) Utility construction: trenching and installation of pipelines for water,
sanitary sewer, and storm sewer.
8) Roadway, Access Drives, Drive Aisles, sidewalks, and Parking Lot
construction: Street subgrades will be excavated and prepared. Paving of
roadways, drive aisles, parking lots, curb and gutter, and sidewalks to be
constructed based on weather and timing of building construction.
9) Lighting, and signage and striping will be installed.
10) The required erosion control measures will be installed or updated, as may
be applicable.
11) Excavation for foundation(s).
12) Stabilization, permanent seeding, mulching, sod, and other landscaping
will be installed.
13) Perform routine maintenance and inspections of BMP's after storm events.
14) Removal of control measures.
Unloading and Loading of construction materials shall be completed in a manner to
mitigate disturbance to existing soils and prepared soils to the extent possible and as
allowed within the normal means of construction. The contractor is encouraged to
provide specific loading and unloading areas so as to minimize heavy truck traffic
disturbing prepared and existing soils, which could cause additional erosion control
measures being required for the site/project.
E. Areas
The project site is an open field vegetated with grass and weeds. There is one vacant
commercial building which will be removed prior to any proposed construction activities.
Robert Benson Reservoir and an associated wetland area bound the proposed site to the
south.
The existing site has topography which generally slopes from the northwest to the south-
southeast at approximately 2.9%, with varying slopes from 2.0% to 5.0%
F. Hydrologic Criteria
The Final Drainage and Erosion Control Report for Lakeview on the Rise, dated
November 15, 2017, which is currently under review by the City of Fort Collins, will be
followed and implemented. The existing site, comprised of grass field, a portion of South
College Avenue and one commercial building, has a composite runoff coefficient of
approximately 0.25. After construction, the proposed site will consists of 17 apartment
buildings, a Clubhouse with pool, and associated street, water, sanitary sewer, storm
sewer, and private infrastructure improvements, as well as intermittent green spaces and
outdoor spaces. Associated internal, public and private streets, access drives, water,
sanitary sewer, storm sewer, and private infrastructure improvements will also be
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constructed. The developed site will have a composite runoff coefficient of
approximately 0.58.
A subsurface soil investigation was performed by Terracon, Inc., a qualified geotechnical
consultant, to determine the existing soil characteristics. Please refer to the “Geotechnical
Engineering Report, Pedcor Fort Collins, South of Intersection of North College Avenue
and Trilby Road, Fort Collins, CO, Terracon Project No 20165101”, dated January 12,
2017, by Terracon, Inc. for specific details.
G. Existing Ground Cover & Soil Amendments
The existing site is vegetated field comprised of native grasses and weeds. One existing
commercial building is located near the northwest corner of the site with a gravel
driveway bordered by shrubs. An existing irrigation ditch passes through the northeast
corner of the parcel and will be relocated. The existing site is approximately 99%
undeveloped land vegetated by native grass and weeds and 1% or less comprised of
gravel driveway and building.
According to the USDA Natural Resources Conservation Service mapping, the site soils
are comprised of 51.9% Fort Collins Loam, 3 to 5 percent slopes; 33.2% Longmont Clay
with 0 to 3 percent slopes; 7.7% Fort Collins Loam, 5 to 9 percent slopes; and 7.2% Heldt
Clay Loam, 3 to 6 percent slopes. Fort Collins Loam, is Hydrologic Soil Group B;
Longmont Clay, Group C; and Heldt Clay Loam, Group D.
Soil Amendments:
Soil Amendments for the property are anticipated for the landscaping and planting along
and throughout green spaces/ open areas, lawns, parkways, and other landscaped areas.
Such soil amendment areas shall adhere to the approved landscape plans and the
recommendations below.
Prepare any area in which any plant materials, including but not limited to grass, seed,
flowers, shrubs or trees, are expected or intended to be installed, prior to installation of
any plant materials in that area, as follows:
o The soil in such areas shall be thoroughly loosened to a depth of
not less than eight (8) inches; and
o Soil amendments shall be thoroughly incorporated into the soil of
such areas to a depth of at least six (6) inches by tilling, discing or
other suitable method, at a rate of at least three (3) cubic yards of
soil amendment per one thousand (1,000) square feet of area to be
planted, unless at least four (4) inches of loose top soil has been
placed on the area after completion of construction activity on top
of not less than four (4) inches of loosened subgrade soils.
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H. Potential Pollution Sources
The following potential pollution sources are identified below and measures are
suggested to protect stormwater quality and prevent contaminates from migrating off-site.
Refer to the SWMP exhibits for the location of BMP’s, stockpiled topsoil areas, staging
areas, waste storage, portable toilets, and site trailer. These locations are provided for
guidance and may be repositioned based on site conditions or Contractor preferences.
1. Disturbed and Stockpiled Topsoil
Approximately 20.089 acres of land will undergo clearing, grubbing and topsoil
removal. Excavation will also be required for underground utility construction,
roadways, parking lots and building foundations. Excavated topsoil will be
placed in stockpiles not to exceed 10’ in height. Stockpiles must be a minimum
of 50 feet from storm sewer inlets and detention pond. Provide temporary seeding
and ample irrigation to establish vegetation on topsoil stockpiles and on disturbed
soil areas. Disturbed soil shall be maintained in a roughened surface condition
and graded with gentle slopes to enhance infiltration and prevent concentrated
runoff from occurring. Stockpiled soil shall be temporarily seeded if stored more
than 30 days. Installation of perimeter silt fence around stockpiles, property
boundaries and phase limits as necessary to prevent migration of soil. Other
BMP’s will include wattle check dams and wattle inlet filters in swales and at
storm inlets.
2. Vehicle Tracking of Sediments
Vehicle tracking pads constructed at the project entrances off of South College
Avenue (U.S. Highway 287) are intended to reduce the tracking of soil onto
public streets during construction. Soil tracked off-site onto paved roads shall be
scrapped, collected and disposed of properly. If tracking of soils offsite persists,
additional gravel paving of parking areas delivery areas and/or access routes may
be necessary to reduce tracking.
3. Management of Contaminated Soils
No contaminated soils have been identified on the parcel. If contaminated soils
are identified during grading, the areas should be marked and the Owner
contacted so a remediation plan can be implemented.
4. Loading and Unloading Operations
Delivery of site materials has potential for impacting runoff quality. Designated
areas for deliveries shall be established to safely load and unload materials.
Hazardous material delivered to site shall be covered and in sealed containers.
Contractor staging areas may be established to drive in and deliver materials on
graved surfaces to minimizing tracking soils offsite.
5. Outdoor Storage Activities
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Hazardous materials such as fuel, solvent or fertilizer used on site shall be in a
secure covered area. Ample sorbent material and containment shall be available
to contain a spill.
6. Vehicle and Equipment Maintenance and Fueling
Heavy machinery will be operated on the project site requiring the use of fuel
trucks. Re-fueling operations and equipment maintenance shall be done in dry
weather conditions and on level ground to prevent and manage soil
contamination. Ample sorbent material and containment shall be available to
contain a spill. Day to day cleaning and maintenance of equipment has the
potential to impact stormwater quality. A designated area should be established
for refueling and maintenance with adequate separation from drainage paths and
ponds. Potential flow paths for spills shall be assessed prior to any fuel or
hazardous substance transfer. Secondary containment shall be implemented for
storage and transfer areas. Any storm drain conveyance within a containment area
shall be protected with berms or plugs. Washing of vehicles or equipment into the
storm drainage system is prohibited.
7. Significant Dust or Particulate Generating Processes
Provide regular watering operations to moisten soils and reduce fugitive dust
during dry conditions.
8. Routine Maintenance Activities
Stored fuel, solvent and fertilizer used on the site shall be in a secure covered
area. Fertilizers will be used to establish temporary and permanent vegetation
during and after construction. MSD sheets should be maintained on site and
posted. Storage bins, containers should be inspected regularly for evidence of
leakage or damage and measures take to fix or repair damage. Materials should
be securely transported when in use and applied or used as recommended by the
manufacturer.
9. On Site Waste Management Practices
Contractor staging areas, dumpsters, and waste receptacles shall be located at
least 50 feet from water courses and inlets, and on a level gravel surface to reduce
generating dust and erosion in these high traffic areas. Perform routine
maintenance and dispose of waste promptly and properly off-site.
10. Concrete Truck/Equipment washing
A concrete washout basin or potable washout unit shall be provided at least 50
feet from a water course or inlet, with such basin being determined by the
Contractor. The Contractor shall notify the Engineer and the City of Fort Collins
Erosion Control Inspector as to the location, size, and type of concrete washout
that will be utilized for the project. Wash fluids are to be contained with waste
product and disposed of properly off-site.
11. Dedicated Asphalt and Concrete Batch Plants
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Concrete and asphalt batch plants will not be used on the project site. Premixed
paving materials will be delivered to the site and placed.
12. Non-Industrial Waste Sources
Portable toilets shall be located at least 50 feet from water courses and inlets, and
on a level gravel surface to reduce generating dust and erosion in these high
traffic areas. Perform routine maintenance and dispose of waste promptly and
properly off-site. Locations for trash and portable toilets are identified on the
SWMP exhibit.
13. Dewatering Activities
A Colorado groundwater discharge permit will be required if dewatering becomes
necessary during construction. Contractor shall comply with State and Federal
regulations for discharging stormwater and groundwater.
Refer to Section III.C. Material Handling and Spill Prevention, for additional details on
controlling the potential pollution sources.
I. Non-Stormwater Discharge
Firefighting activities on the site will be managed with Poudre Fire Authority. As these
conditions are not under direct control of the SWMP Administrator they should be
exempt from this plan. However, erosion control measures shall be in place and
maintained as practical during and after a fire fighting event. All underground water
utilities, sewer and storm must be constructed, tested and approved prior to initiating
construction of any structures. By that time the street curb, gutter and pavement is
expected to be constructed also. Fire trucks will need to have a paved or all-weather
surface to support the fire fighting vehicles. All surface erosion control measures must
be installed and maintained during construction. Inlet protection will be installed after
the inlets are constructed to protect them from sediment transport during firefighting
activities or storm events. Flow would be conveyed in swales, curb and gutter and the
storm sewer system directed to the constructed detention pond areas. Erosion control
measures such as inlet protection and straw wattles shall be maintained until the site is
stabilized and vegetation established.
Prior to installation and approval of underground water utilities, the site will be bare
earth. Fire hazards would include construction vehicles, refueling areas and storage
materials. Runoff from storm events or firefighting will be routed across the surface to
constructed swales and detention ponds with erosion control measures in place.
Groundwater was encountered at most of the test borings, at depths of about 6.6 to 20.4
feet below existing site grades when checked several days after drilling. These
observations represent groundwater conditions at the time of the field exploration and
shortly thereafter, and may not be indicative of other times or at other locations from
where test borings were taken. Contractor shall secure an NPDES permit, in the event
groundwater is encountered during construction.
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J. Receiving Water
Runoff from the site will be conveyed to the Rain Gardens, where flow will be spread
laterally through the basins. The Rain Gardens will provide approximately one (1) foot
of ponding depth with base composed of bioretention sand media and gravel over a 4”
perforated underdrain system installed at the bottom of the Rain Garden. One foot of
depth will be provided in the Rain Garden to meet the LID criteria. Upon the Rain
Gardens filling up with runoff from the site, runoff will be filtered through the Rain
Garden media and gravel and discharge into the proposed detention ponds via the 4”
perforated pipes/underdrains. An overflow spillway will also be constructed in each Rain
Garden to allow excess runoff beyond the 1 foot of depth, to drain to the detention ponds.
A water quality control volume of 0.053 acre-feet will also be provide within Pond 200
for the runoff from basins 24-28, which could not be routed to the Rain Garden. This
volume will discharge through a water quality outlet plate.
II. Site Map
Site maps and notes and details for this SWMP are represented on the SWMP Plan
Exhibits and the Erosion Control Notes and Details sheets, found in Appendix A of this
report.
III. Stormwater Management Controls
A. Erosion and Sediment Controls
This project will implement various Best Management Practices (BMP's) for the
treatment of storm water runoff as outlined below. The location of BMPs are represented
on the Site Map exhibits, with the following being implemented for the project:
Structural Practices
Silt fence
Straw wattle check dams
Diversion ditches and drainage swales
Gravel inlet filters, rock socks and wattles
Erosion control fabric
Vehicle tracking pad
Riprap
Non-Structural Practices
Roughened overlot grading with gentle slopes
Preservation of existing vegetation
Temporary and permanent seeding, sod, and crimped straw mulch
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Pre-Sedimentation Basins
Water application to suppress dust control
The potential exists for erosion problems during construction, but should be minimal
after completion of Lakeview on the Rise development. Silt fence will be installed along
the north, south, east, and west sides of the site to prevent sediment from leaving the site.
After curb and gutter is constructed, silt fence will be installed around each block of
buildings to minimize sediment entering streets. A tracking pad will also be placed at
west entrance to the site at Hwy 287. Straw wattle inlet filters will be placed at the pond
outlet structures and around area inlets in green spaces. Wattle inlet filters will be placed
at the opening of the proposed Type R inlets, Combination inlets, and area inlets located
in the roadways. During the construction of Lakeview on the Rise, disturbed areas will
be permanently landscaped or temporarily seeded and mulched within 30 days of initial
disturbance.
Prior to grading operations and construction, the structural erosion controls must be
installed. The vehicle tracking pads shall be constructed at the project entrance on U.S.
Highway 287. Silt fence shall be installed around the perimeter of the property boundary,
as shown in the erosion control plans. These measures will reduce tracking of soil onto
public roads during construction and help prevent sediment from leaving the site.
Immediately after storm sewer improvements are constructed, erosion control measures
shall be installed and maintained. Drainage swales constructed on the project site will be
protected with installation of wattle check dams and runoff will be conveyed to the
proposed drainage structures and detention ponds on the site. Site runoff will ultimately
discharge from two locations, Pond 100 at the southwest corner of the site, and Pond 200
which will discharge from the southeast corner of the site. Erosion control fabric shall be
installed in drainage areas and the slopes identified on the Erosion Control Plan. Fabric
shall be installed in accordance with manufactures guidelines and recommendations.
Structural practices such as temporary wattle inlet filters will be provided at proposed
inlets. Wattle filters will also be installed at the curb cut locations. Temporary wattle
inlet filters will also be installed at existing inlet locations.
The detention ponds, along with any other disturbed land should be revegetated with seed
or sod or crimp mulched as soon after grading as weather permits. Established vegetation
will provide the opportunity for pollutants to settle out of the storm water runoff.
The surface of overlot graded terrain should be kept in a roughened condition until final
preparation for foundations or landscaping. Existing vegetation should be preserved as
much as possible. Soil stockpiles shall not exceed 10 feet in height and shall receive
temporary grass seeding to establish vegetated cover. Temporary and permanent grass
seeding must be initiated in construction lasting 30 days or more to vegetate disturbed
areas, as called for in the approved drainage and erosion control report and erosion
sheets, as well as the approved landscape plans for the project.
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Sediment and debris deposition on the upstream side of silt fence must be removed
following significant storm events and as needed to allow the erosion control structures to
function effectively. Damaged fence must be replaced or repaired as evident during
regular inspections. Erosion and sediment controls must be maintained until the site has
uniform cover equivalent to 70% of the original site condition. Cover may include
vegetation in the interim condition.
Disturbed areas not in a roadway or greenbelt area shall have temporary vegetation seed
applied within 30 days of initial disturbance. After seeding, a hay or straw mulch shall be
applied over the seed at a rate of 1.5-tons/acre minimum, and the mulch shall be
adequately anchored, tacked, or crimped into the soil. Those roads that are to be paved as
part of the Lakeview on the Rise development must have a 1-inch layer of gravel mulch
applied at a rate of at least 135 tons/acre immediately after overlot grading is completed.
The pavement structure shall be applied within 30 days after the utilities have been
installed.
If the disturbed areas will not be constructed upon within one growing season, a
permanent seed shall be applied. After seeding, a hay or straw mulch shall be applied
over the seed at a minimum rate of 1.5 tons/acre, and the mulch shall be adequately
anchored, tacked or crimped into the soil. In the event a portion of the roadway
pavement surface and utilities will not be constructed for an extended period of time after
overlot grading, a temporary vegetation seed and mulch shall also be applied to the
roadway areas as previously discussed. Please refer to the approved landscape plans for
the seed, plant, shrub, and mulch types, as well as irrigation needs for the project.
B. SWMP Administrator
The Storm Water Management Plan (SWMP) shall be developed, implemented,
maintained, and revised under the direction of a single individual identified as the SWMP
Administrator for the project site. This contact will be available throughout the project as
the authority for management of the site stormwater quality.
SWMP Administrator: Bruce Hagen-Project Superintendent
Pedcor Investments, LLC
One Pedcor Square
770 3
rd
Avenue SW
Carmel, IN 46032
(317) 509-9377 Cell
(317) 521-6334 Office
This SWMP may require modification to accurately reflect the actual field conditions.
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Recommendations for changes shall be documented in the SWMP inspection reports.
SWMP revisions shall be made immediately after field changes. Revisions shall be made
as soon as possible, but within 72 hours after installation of new BMP's, materials or
methods of installation are made.
C. Material Handling and Spill Prevention
Upon confirmation from the Contractor of the desired locations for fuel, equipment, and
materials storage, the SWMP Administrator shall record the location of potential
pollutants on the site map. Descriptions of the potential pollutants shall be added to the
SWMP log book.
The Contractor shall provide a Spill Prevention, Control, and Countermeasure Plan
(SPCC) for any petroleum product, chemicals, solvents, or other hazardous materials in
use, or in storage, at the work site. Work shall not be started until the plan has been
submitted to and approved by the Local Entity Engineer, Fire Department, State
Jurisdictional Entities, and the EPA, as applicable.
Spill Prevention, Control and Countermeasure Plan shall be developed and implemented
to establish operating procedures and the necessary employee training to minimize the
accidental releases of pollutants that can contaminate stormwater runoff.
The Spill Prevention, Control, and Countermeasure Plan shall contain the following
information:
1. Identification and contact information of the ECS and the Contractor and
2. CDOT spill cleanup coordinators.
3. Locations of areas on project site where equipment fueling and servicing
operations are permitted.
4. Location of cleanup kits.
5. Quantities of chemicals and locations stored on site.
6. Label system for chemicals and Materials Safety Data Sheets (MSDS) for
products.
7. Clean up procedures to be implemented in the event of a spill that does not enter
state waters or ground water.
8. Procedures for spills of any size that enter surface waters or groundwater, or have
the potential to do so.
9. CDOT’s Erosion Control and Stormwater Quality Guide (current edition)
contains Spill notification contacts and phone numbers required in the SPCC
10. A summary of the employee training provided. Information in items 1 through 8
shall be updated when it changes.
Measures should be undertaken to control building materials, waste, and disposal of
excess asphalt and concrete to ensure these materials do not enter waterways or the
detention pond. Asphalt, concrete, building materials, waste and cleanup by-products
shall not be allowed to enter the on-site curb inlets and storm sewer systems nor shall
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they be allowed to enter the detention pond. Measures shall be undertaken to remove
excess waste products from the site and dispose of these waste materials off-site in an
appropriate manner.
The Contractor shall inspect equipment and stored materials daily for leaks or spills and
take corrective action to repair such conditions. Pre-approved absorbent material and/or
containers shall be provided as preventative measures to avoid contact with soils or
pavement.
Any periodic refueling of earthmoving equipment on site shall be carefully controlled to
ensure these materials are not spilled on the site and will not enter the existing detention
pond. In the event of a spill from the site into an on-site curb inlet or storm sewer
system, appropriate measures shall be undertaken immediately to contain spilled
pollutants and properly remove the spilled materials along with all contaminated soils and
prevent future spills from occurring. In addition, measures shall be undertaken to limit
off-site soil tracking of mud and debris spillage from vehicles leaving the site. Mud and
debris shall not be tracked along roadways nor allowed to enter any non-protected
drainage path.
Disturbed soils and stockpiles shall be maintained in a roughened surface condition and
graded with gentle slopes to enhance infiltration and prevent concentrated runoff from
occurring. Stockpiled soil shall be temporarily seeded if stored more than 30 days. Silt
fence may be used at the perimeter of the pile.
The following measures are suggested to protect stormwater quality and prevent
contaminates from migrating off-site.
Washing of vehicles or equipment into the storm drainage system is prohibited.
Soil tracked off-site onto paved roads shall be scrapped, collected and disposed of
properly. If tracking of soils offsite persists, additional gravel paving of parking areas
delivery areas and/or access routes may be necessary to reduce tracking.
Re-fueling operations and equipment maintenance shall be done in dry weather
conditions and on level ground to prevent and manage soil contamination.
Designated areas for deliveries shall be established to safely load and unload
materials.
Potential flow paths for spills shall be assessed prior to any fuel or hazardous
substance transfer. Secondary containment shall be implemented for storage and
transfer areas.
Ample sorbent material and containment shall be available to contain a spill.
Any storm drain conveyance within a containment area shall be protected with berms
or plugs.
Hazardous materials such as fuel, solvent or fertilizer used on site shall be in a secure
covered area.
Provide regular watering operations to moisten soils and reduce fugitive dust during
dry conditions.
Locate soil stockpiles a minimum of 50 feet from storm sewer inlets and detention
pond. Provide temporary seeding and ample irrigation to establish vegetation.
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Contractor staging areas, portable toilets, dumpsters, and waste receptacles shall be
located at least 50 feet from water courses and inlets, and on a level gravel surface to
reduce generating dust and erosion in these high traffic areas. Perform routine
maintenance and dispose of waste promptly and properly off-site.
A concrete washout basin or potable washout unit shall be provided at least 50 feet
from a water course or inlet, with such basin being determined by the Contractor.
The Contractor shall notify the Engineer and the City of Fort Collins Erosion Control
Inspector as to the location, size, and type of concrete washout that will be utilized for
the project. Wash fluids are to be contained with waste product and disposed of
properly off-site.
Concrete and asphalt batch plants will not be used on the project site. Premixed
paving materials will be delivered to the site and placed.
In the event of a spill, spill prevention procedures should be implemented and posted on
site. The Stormwater Management Plan Administrator is responsible for coordination
efforts and to serve as contact for reporting spills. Spills shall be reported to the
Stormwater Management Plan Administrator who will determine if the Colorado
Department of Public Health and Environment (24-hour spill reporting 877-518-5608)
or downstream water users need to be contacted. Training for cleanup procedures,
location of spill kits, and use of materials shall be provided, as well as posted locations
and procedures for properly washing out concrete trucks and equipment to prevent
discharges from the site.
IV. OTHER CONTROLS
If dewatering of groundwater or stormwater in excavations is necessary, the
owner/operator shall be required to obtain a separate permit from the Colorado Discharge
Permit System (CDPS).
V. FINAL STABILIZATION AND LONGTERM STORMWATER MANAGEMENT
Following site construction, the goal is to achieve a stabilized cover condition to provide
long-term stormwater protection. Stabilization is quantified by achieving uniform cover
equal to 70% of the pre-disturbance condition. The post-construction condition of the site
will provide for the majority of the site being surfaced with concrete walkways, concrete
curb and gutter, and asphalt pavement. Stabilization shall be fulfilled, as it relates to
stability of soil, because of the hard surfaces constructed and the permanent landscaping
features being provided, thus virtually eliminating erosion from the site. Vehicle tracking
pads are to be removed as final pavement is placed. Permanent seeding with mulching
shall be installed over the remaining disturbed ground. Drainage ditches, pans, culverts,
storm pipe and storm structures and the pond outlet structure shall be cleaned of debris
and sediment. Sediment and debris on paved surfaces shall be removed and the surfaces
swept clean. Eroded slopes and drainage paths shall be repaired by backfilling and
grading these areas to finished grade. All silt fence and perimeter control measures shall
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be removed, following establishment of permanent stable vegetation to the satisfaction of
the City of Fort Collins Erosion Control inspector.
VI. INSPECTION AND MAINTENANCE
Inspection and maintenance shall be undertaken at least every 14 days and within 24
hours of a precipitation event or snow melt, which may cause runoff to occur. Routine
maintenance inspections shall be conducted to ensure proper function of BMP's and to
identify areas in need of additional protection or maintenance. The inspection shall
include observation of the construction site perimeter and discharge points (including into
a storm sewer system), all disturbed areas, any areas used for material storage that are
exposed to precipitation, any areas used for washing of machinery, the vehicle tracking
pad, concrete washout, and any other erosion and sediment control measures, as well as
the inspection all silt fence, wattles, gravel inlet filters, and check dams. Structures shall
be reset or repaired, as needed, and any excess sediment deposits removed.
Hazardous materials such as fuel, solvent or fertilizer, used on site, shall be in a secure
covered area. An inspection log shall be kept up to date to record inspections, repairs,
maintenance and recommendations for updates to the SWMP. Additionally, any spills
shall be fully documented and include: (1) what the spill material was; (2) reason for
spill; (3) date, time of start and finish of spill, quantity, and location of spill, weather
conditions, and who was contacted, and how the spill was cleaned; (4) impact to
environment, and method of disposal of cleanup materials.
All construction activities shall comply with the State of Colorado permitting process for
Stormwater Discharges Associated with Construction Activity. A Colorado Department
of Public Health and Environment (CDPHE) Permit will be required before any
construction grading can begin.
VII. REFERENCES
1. “Geo Report, Pedcor Fort Collins, South of the intersection of North College Avenue
and Trilby Road, Fort Collins, Colorado, Terracon Project No 20165101”, dated
January 12, 2017, by Terracon, Inc.
2. “Final Drainage and Erosion Control Report for Lakeview on the Rise", Fort Collins,
Colorado, dated November 15, 2017, by Aspen Engineering.
3. SWMP Guidance Preparing a Stormwater Management Plan (SWMP), Stormwater
Construction General Permit, Water Quality Control Division, CDPHE, revised June,
2011.
4. Standard Specifications for Road and Bridge Construction, Colorado Department of
Transportation (CDOT), 2011.
Page 16 of 23
5. Storm Drainage Design Criteria and Construction Standards by the City of Fort
Collins, Colorado, May 1984, Revised January 1997, & Associated UDFCD Updates
and New City of Fort Collins Stormwater Criteria manual, adopted January, 2012.
6. Erosion Control Reference Manual for Construction Sites by the City of Fort Collins,
Colorado, January 1991, Revised January 1997, & Associated UDFCD Updates and
New City of Fort Collins Stormwater Criteria manual, adopted January, 2012.
Page 17 of 23
APPENDIX A
Page 18 of 23
STORM WATER MANAGEMENT PLAN FIELD INSPECTION
Project: Lakeview on The Rise
SWMP Administrator: ______________________________________________
Inspector: _______________________ Date:____________ Time: _________
Title: __________________________
Weather: ________________________________
REASON FOR INSPECTION
___ Routine Inspection (14 day minimum)
___ Runoff Response Storm Start______ End_______ Duration ______
___ Snow Melt
SWMP MANAGEMENT
Estimated area of disturbance at time of inspection: ______acres or ________%
Is SWMP notebook located on site?_____
Are changes to the SWMP documents noted and approved? _______
Are the inspection reports retained in the SWMP notebook: _______
Are corrective actions from the last inspection completed? _______
Is a list of potential pollutants retained at the site? _______
BMP AND EROSION CONTROL INSPECTION ITEMS
For each item indicate: “Y” = In Use or “N” = Not used
EROSION CONTROL SEDIMENT CONTROL
______Straw Bale Dike ______Inlets Filters
______Pond Outlet ______Silt Fence
______ Erosion Control Fabric ______Vehicle Tracking Pad
______ Riprap Structures ______ Pond Sediment
______ Storm Pipe Outlets ______ Perimeter Control
______ Drainage Pans
______ Seeding
______ Mulching
______ Disturbed Surface/Roughening
MATERIAL HANDLING, SPILL PREVENTION, WASTE
MANAGEMENT AND GENERAL POLLUTION PREVENTION
______ Storage Areas
______ Stockpiled Materials
______ Concrete Washout
______ Sanitary Facilities
______ Street Sweeping
______ Waste Management
Page 19 of 23
CONSTRUCTION SITE ASSESSMENT AND CORRECTION ACTIONS
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.
Additional copies of this form may be used for additional items.
Location BMP Condition Corrective Action and
Preventative Measure Taken
Date
Complete
& Initials
CONSTRUCTION SITE ASSESSMENT
Provide Yes or No response for the following questions below.
Is there evidence of discharge of sediment or other pollutants from the site?
_________________
Has sediment or other pollutants discharging from the site reached state waters?
_____________
Describe the location of sediment/pollutants discharge
________________________________________________________________________
________________________________________________________________________
GENERAL NOTES
Page 20 of 23
INSPECTION CERTIFICATION
I certify under penalty of law that based on my inspection and observations documented
above, 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.
__________________________ ____________________ ________________
Inspector Signature Title Date
COMPLIANCE CERTIFICATION
Corrective action(s) has been taken, or where a report doesn't 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.
__________________________ ____________________ ________________
Inspector Signature Title Date
NOTE: Modifications to the SWMP must be updated immediately to reflect the
field conditions. SWMP Field Inspection forms shall be completed for each
inspection event. Changes noted on the Erosion Control Plan and/or Erosion
Control Notes and Details sheets shall be kept with the respective inspection form.
All inspection documentation and spill reports shall be filed on site and available for
review at any time.
Page 21 of 23
MATERIALS HANDLING
Item Delivered: Date:
Actions Taken:
________________________________________________________________________
SPILL REPORTING
Material Spilled:
________________________________________________________________________
Why Material was Spilled:
____________________________________________________________
Quantity: __________________________________________________________
Location: _______________________________________________________
Weather Conditions: ________________________________________________
Spill Start Time: ________________ Spill Stop Time: _____________________
Cleanup Method: ___________________________________________________
Disposal Method: ___________________________________________________
Enter N/A if item is not applicable to the site Stormwater Management Plan
Page 22 of 23
CONTACT INFORMATION/RESPONSIBLE PARTIES
Owner/Developer
Pedcor Investments, LLC
One Pedcor Square
770 3
rd
Avenue SW
Carmel, IN 46032
Phone: (317) 218-2668
SWMP Administrator
Pedcor Investments, LLC
One Pedcor Square
770 3
rd
Avenue SW
Carmel, IN 46032 Phone: (317) 218-2668 office
Bruce Hagen Phone: (317) 509-9377 cell
email: bruceh@pedcor.net
This SWMP Prepared by
Aspen Engineering
19 Old Town Square
Suite 238 Phone: (970) 419-4344
Fort Collins, CO 80524 email: johng@Aspen-Engineer.com
Civil Engineer
Aspen Engineering
John Gooch
19 Old Town Square
Suite 238 Phone: (970) 420-5345
Fort Collins, CO 80524 email: johng@Aspen-Engineer.com
Emergency Contacts
Poudre Fire Authority Emergency: 911
Administration Non-Emergency Phone: (970) 416-2892/(970) 416-2600
102 Remington St.
Fort Collins, CO 80524
Permitting Agency
Colorado Department of Public Health and Environment (CDPHE)
Water Quality Control Division
WQCD-Permits P-B2 Phone: (303)692-2000
4300 Cherry Creek Drive South www.cdphe.state.co.us
Denver, CO 80246 24-hour spill reporting 1-877-518-5608
Page 23 of 23
Site Contractor
Company: __________________________________
Contact: _____________________ Phone: ________________________
Street: ______________________ Fax: ________________________
City, State Zip________________________________________________
email: ______________________________________________________
Site Sub-Contractor
Company: __________________________________
Contact: _____________________ Phone: ________________________
Street: ______________________ Fax: ________________________
City, State Zip________________________________________________
email: ______________________________________________________
Site Sub-Contractor
Company: __________________________________
Contact: _____________________ Phone: ________________________
Street: ______________________ Fax: ________________________
City, State Zip________________________________________________
email: ______________________________________________________
Site Sub-Contractor
Company: __________________________________
Contact: _____________________ Phone: ________________________
Street: ______________________ Fax: ________________________
City, State Zip________________________________________________
email: ______________________________________________________
Site Sub-Contractor
Company: __________________________________
Contact: _____________________ Phone: ________________________
Street: ______________________ Fax: ________________________
City, State Zip________________________________________________
email: ______________________________________________________
Project: Lakeview on the Rise 801-002
Prepared By: AGW Date: 11/15/2017
CITY RESEEDING COST
Unit Total
Method Quantity Unit Cost Cost Notes
Reseed/mulch 20.09 ac $723 $14,525.07
Subtotal $14,525
Contingency 50% $7,263
Total $21,788
Notes: 1. A<=5 ac=$655/ac; A>5 ac=$615/ac.
EROSION CONTROL MEASURES
Unit Total
Number Method Quantity Unit Cost Cost Notes
Vehicle Tracking Mat 30 CY $30 $900
6 Gravel Filter 41 ea $300 $12,300
5 Straw Wattle Barrier 21 ea $150 $3,150
8 Silt Fence Barrier 12819 LF $2 $25,638
39 Hay or Straw Dry Mulch (1-5% slope) 20.09 ac $500 $10,045
Gravel Filter Rock Sock Filter 120 LF $4 $480
Subtotal $52,513
Contingency 50% $26,257
Total $78,770
Total Security $78,770
EROSION CONTROL COST ESTIMATE