HomeMy WebLinkAboutDocument Markups - Stormwater Management Plan - 04/15/2025Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
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Stormwater Management Plan
Prospect Plaza Redevelopment
Fort Collins, CO
Prepared For:
CSU Strata
2537 Research Blvd, Suite 200
Fort Collins, CO 80523
970.491.2933
Prepared By:
Sunny Civil
706 S College Ave, Suite 203
Fort Collins, CO 80524
970.775.2925
SWMP Preparation Date:
03.19.2025
Estimated Project Dates:
Project Start Date: May 2025
Project Completion Date: August 2027
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Contents
SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING............................................................. 1
1.1 Project/Site Information ......................................................................................... 1
1.2 Contact Information/Responsible Parties .............................................................. 1
1.3 Nature and Sequence of Construction Activity ...................................................... 3
1.4 Soils, Slopes, Vegetation, and Current Drainage Patterns ................................... 3
1.5 Construction Site Estimates .................................................................................. 4
1.6 Receiving Waters .................................................................................................. 4
1.7 Site Features and Sensitive Areas to be Protected .............................................. 4
1.8 Potential Sources of Pollution ............................................................................... 5
1.9 Endangered Species Certification ......................................................................... 6
1.10 Historic Preservation ............................................................................................. 6
1.11 Applicable Federal, Tribal, State or Local Programs ............................................. 7
1.12 Maps ..................................................................................................................... 7
SECTION 2: EROSION AND SEDIMENT CONTROL BMPS .......................................................................... 8
2.1 Minimize Disturbed Area and Protect Natural Features and Soil .......................... 8
2.2 Phase Construction Activity .................................................................................. 8
2.3 Stabilize Soils ....................................................................................................... 9
2.4 Protect Slopes ...................................................................................................... 9
2.5 Protect Storm Drain Inlets ................................................................................... 10
2.6 Establish Perimeter Controls and Sediment Barriers .......................................... 10
2.7 Establish Stabilized Construction Exits ............................................................... 11
2.8 Additional BMPs ................................................................................................. 12
SECTION 3: GOOD HOUSEKEEPING BMPS ............................................................................................... 12
3.1 Material Handling and Waste Management ........................................................ 12
3.2 Establish Proper Building Material Staging Areas ............................................... 13
3.3 Designate Washout Areas .................................................................................. 13
3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices .......... 13
3.5 Spill Prevention and Control Plan ....................................................................... 13
3.6 Allowable Non-Stormwater Discharge Management .......................................... 14
SECTION 4: POST-CONSTRUCTION BMPs ................................................................................................ 15
SECTION 5: INSPECTIONS .......................................................................................................................... 16
5.1 Inspections .......................................................................................................... 16
5.2 Delegation of Authority ........................................................................................ 17
5.3 Corrective Action Log .......................................................................................... 17
SECTION 6: RECORDKEEPING AND TRAINING ........................................................................................ 18
6.1 Recordkeeping .................................................................................................... 18
6.2 Log of Changes to the SWPPP ........................................................................... 18
6.3 Training ............................................................................................................... 19
SECTION 7: FINAL STABILIZATION ............................................................................................................ 20
SECTION 8: CERTIFICATION AND NOTIFICATION .................................................................................... 21
SWPPP APPENDICES .................................................................................................................................. 22
Appendix A – General Location Map
Appendix B – Site Maps
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Appendix C – Construction General Permit
Appendix D – NOI and Acknowledgement Letter from EPA/State
Appendix E – Inspection Reports
Appendix F – Corrective Action Log (or in Part 5.3)
Appendix G – SWPPP Amendment Log (or in Part 6.2)
Appendix H – Subcontractor Certifications/Agreements
Appendix I – Grading and Stabilization Activities Log (or in Part 6.1)
Appendix J – Training Log
Appendix K – Delegation of Authority
Appendix L – Additional Information (i.e., Endangered Species and Historic
Preservation Documentation)
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SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING
1.1 Project/Site Information
Project/Site Name: Prospect Plaza Redevelopment
Project Street/Location: 304, 318 West Prospect Road
City: Fort Collins State: CO ZIP Code: 80526
County or Similar Subdivision: Larimer
Latitude: 40º 34' 4.8'' N (degrees, minutes,
seconds)
Longitude: 10º 4' 55.6'' W (degrees,
minutes, seconds)
Method for determining latitude/longitude: https://www.whatsmygps.com/
Is the project located in Indian country?
Yes No
If yes, name of Reservation, or if not part of a Reservation, indicate "not applicable."
Is this project considered a federal facility?
Yes
No
NPDES project or permit tracking number*:__________________
*(This is the unique identifying number assigned to your project by your permitting authority after you have
applied for coverage under the appropriate National Pollutant Discharge Elimination System (NPDES)
construction general permit.)
1.2 Contact Information/Responsible Parties
Owner:
Company Name:
Name:
Address:
City, State, Zip Code:
Telephone Number:
Fax/Email:
Operator(s):
Company Name: Saunders
Name:
Address:
City, State, Zip Code:
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Telephone Number:
Fax/Email:
Area of control (if more than on operator at site):
Subcontractor(s):
Company Name:
Name:
Address:
City, State, Zip Code:
Telephone Number:
Fax/Email:
Area of control (if more than on operator at site):
Company Name:
Name:
Address:
City, State, Zip Code:
Telephone Number:
Fax/Email:
Area of control (if more than on operator at site):
Company Name:
Name:
Address:
City, State, Zip Code:
Telephone Number:
Fax/Email:
Area of control (if more than on operator at site):
Emergency 24-Hour Contact:
Company Name:
Name:
Telephone Number:
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1.3 Nature and Sequence of Construction Activity
Describe the general scope of the work for the project, major phases of construction,
etc:
This project will consist of the demolition of existing apartment and commercial buildings
and the construction of a new apartment building and coffee shop with associated
utilities, drives, and parking areas. An emergency access alley will also be constructed
as part of this project. The total area of this site is 4.48 acres. General soil disturbing
activities will include:
· Temporary construction access points
· Demolition of existing buildings and associated utilities.
· Clearing and grubbing
· Installation of storm sewer pipes, inlets, and detention facilities
· Construction of a coffee shop and apartment building
· Construction of utilities
· Construction of curb and gutter, drives, and parking areas
· Final grading
· Final stabilization of disturbed areas
What is the function of the construction activity?
Residential Commercial Industrial Road Construction Linear Utility
Other (please specify):
Estimated Project Start Date: May 2025
Estimated Project Completion Date: August 2027
1.4 Soils, Slopes, Vegetation, and Current Drainage Patterns
Soil type(s): Altvan-Satanta Loams, Hydrologic Soil Group B
Slopes (describe current slopes and note any changes due to grading or fill activities):
0-3% slopes
Drainage Patterns (describe current drainage patterns and note any changes due to
grading or fill activities):
The site currently drains away from existing buildings towards the northeast. After
construction, the site will drain away the proposed apartment complex into rain gardens
that connect to the local storm system. Runoff generated in drives drains to the north.
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Vegetation: N/A
Other:
1.5 Construction Site Estimates
The following are estimates of the construction site.
Total project area: 4.48 acres
Construction site area to be disturbed: 4.71 acres
On-Site Disturbed: 4.42 acres
Off-Site Disturbed: 0.29 acres
Percentage impervious area before construction: 94.6%
Runoff coefficient before construction: 0.93 (5 year), 1.00 (100 year)
Percentage impervious area after construction: 75.9%
Runoff coefficient after construction 0.79 (5 year), 0.95 (100 year)
1.6 Receiving Waters
Description of receiving waters:
Spring Creek
Description of storm sewer systems:
Local storm sewer system
Description of impaired waters or waters subject to TMDLs:
E. coli
Source: https://www.epa.gov/npdes/epas-stormwater-discharge-mapping-tools
1.7 Site Features and Sensitive Areas to be Protected
Description of unique features that are to be preserved:
N/A
Describe measures to protect these features:
N/A
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1.8 Potential Sources of Pollution
Potential sources of sediment to stormwater runoff:
· Clearing and grubbing operations
· Grading operations
· Soil import operations
· Utility excavation operations
· Soil stockpiling operations
· Building operations
· Entry and exit points to site
· Loading and unloading operations
Potential pollutants and sources, other than sediment, to stormwater runoff:
· Heavy metals – from concrete additives, concrete washout, material delivery, and
storage and use.
· pH (acids and bases) – from concrete washout, painting and cleaning, drilling
and blasting operations, material delivery, storage and use, and sanitary/septic
waste.
· Paints and solvents – from concrete washout and waste, painting, concrete
polishing, cleaning products, material delivery and use, and sanitary/septic
waste.
· Trash, Debris and Solids – from clearing and grading, paving, concrete wash
waste, construction painting and cleaning, demolition, drilling and blasting,
material delivery storage and use, landscaping, and general construction.
· Pesticides/Herbicides – from material delivery, storage and use, hazardous
waste spills, vehicle use, storage, service and maintenance.
· Fertilizers/Nutrients – from painting, cleaning products, dewatering, material
delivery and storage, spills during landscaping operation, sanitary/septic waste.
Pollutant-Generating Activity Stormwater Pollutants Location
Clearing and Grubbing
Operations
Sediment; oil; grease; hydraulic
fluid
Existing landscaped / native areas
within limits of disturbance
Grading Operations
Sediment (including dust
particles); oil; grease; hydraulic
fluid
Entire site / areas show within
limits of disturbance
Soil Import Operations Sediment; oil; grease; hydraulic
fluid; nutrients Areas of fill
Utility Excavation Operations Sediment; oil; grease; hydraulic
fluid
All locations of dry and wet utility
installation
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Landscaping Operations Sediment; oil; grease; hydraulic
fluid; nutrients All areas not covered by pavement
Soil Stockpiling Operations Sediment; oil; grease; hydraulic
fluid; nutrients; organics
Areas for soil import; landscape
material
import areas; utility trenches
Building Operations
Sediment; oil; grease; hydraulic
fluid; gross pollutants (trash and
debris); chemicals; pesticides;
concrete waste; organics
Retail store
Entry and Exit Points to Site Sediment (including dust
particles) Access point along Dee Street
Loading and Unloading
Operations
Sediment (including dust
particles); damage to structural
CMs
Staging areas
1.9 Endangered Species Certification
Are endangered or threatened species and critical habitats on or near the project area?
Yes No
Describe how this determination was made:
IPaC online mapping tool
If yes, describe the species and/or critical habitat:
N/A
If yes, describe or refer to documentation that determines the likelihood of an impact on
identified species and/or habitat and the steps taken to address that impact. (Note, if
species are on or near your project site, EPA strongly recommends that the site
operator work closely with the appropriate field office of the U.S. Fish and Wildlife
Service or National Marine Fisheries Service. For concerns related to state or tribal
listing of species, please contact a state or tribal official.)
N/A
Source: https://ipac.ecosphere.fws.gov/
1.10 Historic Preservation
Are there any historic sites on or near the construction site?
Yes No
Describe how this determination was made:
City has determined there are no historic sites on this site during project review.
If yes, describe or refer to documentation that determines the likelihood of an impact on
this historic site and the steps taken to address that impact.
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N/A
1.11 Applicable Federal, Tribal, State or Local Programs
N/A
1.12 Maps
Site maps are included as part of this SWPPP in Appendices A and B.
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SECTION 2: EROSION AND SEDIMENT CONTROL BMPS
Potential sources of sediment to stormwater runoff include:
· Clearing, grading, and excavating activities, primarily un-stabilized areas, paving
operations, demolition and debris disposal, dewatering operations, drilling and
blasting, material delivery, storage and use, and landscaping operations
See Site Maps and Construction Documents for CM installation locations and details.
2.1 Minimize Disturbed Area and Protect Natural Features and Soil
Preserving Natural or Existing Vegetation
Will any trees be preserved during construction?
Yes, this project will practice tree preservation as a non-structural CM. Refer to the
landscape plan contained in the most current set of construction documents for this
development for the location of preserved trees.
No, no trees will be preserved during this project.
2.2 Phase Construction Activity
· Phase I (8-10 months)
1. Install SWMP Information Sign onsite.
2. Install stabilized construction entrances/exits.
3. Install silt fence(s) on site (clear only the areas necessary to install silt fence).
4. Prepare temporary parking and storage areas.
5. Construct and stabilize sediment basin(s) and sediment trap(s) with appropriate
outfall structures (clear only the areas necessary to install basins and traps)
6. Install and stabilize hydraulic control structures (dikes, swales, check dams, etc.)
7. Begin clearing and grubbing the site.
8. Begin grading the site.
9. Start construction of building pad and structures
· Phase II (12-14 months)
1. Temporarily seed, throughout construction, areas that will be inactive for 14 days
or more.
2. Install utilities, underdrains, storm sewers, curbs, and gutters.
3. Install riprap around outlet structures as each outlet structure is installed.
4. Install inlet protection at all storm sewer structures as each inlet structure is
installed.
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5. Permanently stabilize areas to be vegetated as they are brought to final grade.
6. Prepare site for paving.
7. Pave site.
8. Install appropriate inlet protection devices for paved areas as work progresses.
9. Complete grading and installation of permanent stabilization over all areas
including outlots.
10. Obtain concurrence with the Construction Manager that the site has been fully
stabilized, then:
a. Remove all remaining temporary erosion and sediment control devices,
b. Stabilize any areas disturbed by the removal of CMs, and
c. Ask the Construction Manager to contact the Owner’s Engineer to
complete the site inspection and report.
d. Continue Inspection Reports until the Final inspection if signed by the
Construction Manager that the site is fully stabilized, and the permit may
be discontinued.
2.3 Stabilize Soils
Large areas of soil that are denuded of vegetation and have no protection from particles
being picked up and carried by wind should be protected with a temporary cover or kept
under control with water or other soil adhering products to limit wind transported
particles exiting the site perimeter.
Water trucks or other dust control agents will be used, as needed, during construction to
reduce dust generated on the site. Dust control must be provided by the General
Contractor to a degree that follows applicable local and state dust control regulations.
2.4 Protect Slopes
Slope Tracking – Slope Tracking is the technique used for surface roughening or
scarification by means of mechanical equipment. Slope Tracking creates grooves that
are parallel to the slope contours. The primary functions for Slope Tracking are to
reduce erosion potential by decreasing runoff velocities, trap sediment, increase the
chances for water infiltration, and aid in the establishment of vegetative cover.
Rolled Erosion Control Products – Rolled erosion control products are protective
covering netting, blankets, or turf reinforcement mats (TRMs) installed on a prepared
planting area of a steep slope, channel, or shoreline. They aid in controlling erosion on
critical areas by absorbing the energy from raindrop impacts and providing a
microclimate which protects young vegetation and promotes its establishment. TRMs
are also used to raise the maximum permissible velocity and shear stress of turf grass
stands in channelized areas by enabling the turf to resist the forces of erosion during
storm events.
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Rolled erosion control products (nets, blankets, turf reinforcement mats) and marginally
vegetated areas (areas not meeting required vegetative densities for final stylization)
must be inspected weekly. Rilling, rutting, and other signs of erosion indicate the
erosion control device is not functioning properly and additional erosion control devices
are warranted.
2.5 Protect Storm Drain Inlets
Storm Sewer Inlet Protection – Storm sewer inlet protection is an internal sediment
filter or an external ponding area around a storm drain drop inlet or curb inlet. Its
purpose is to prevent soil and debris from entering storm drainage systems prior to
permanent stabilization of the disturbed area. This practice shall be used where the
drainage area to an inlet is disturbed, it is not possible to temporarily divert the storm
drain outfall into a trapping device, and watertight blocking of the inlets is not advisable.
It is not to be used in place of sediment trapping devices.
Note to General Contractor: All inlet protection devices create ponding of stormwater
that can result in flooding or by-pass conditions. Clean or remove and replace the
protection measures as sediment accumulates, the filter becomes clogged, and/or
performance is compromised. Where evidence of sedimentation exists adjacent to the
inlet protection device, remove the deposited sedimentation by the end of the same
work day that it is found.
2.6 Establish Perimeter Controls and Sediment Barriers
Silt Fence – A silt fence is a temporary sediment barrier made of porous fabric that is
held up by wooden or metal posts driven into the ground. The fabric ponds sediment-
laden stormwater, causing sediment to be retained by the settling processes. Silt fence
can be used in the following applications:
· Intercepting and detaining small amounts of sediment from disturbed areas
during construction operations in order to prevent sediment from leaving the
construction site,
· Decreasing the velocity of sheet flows
· In high-risk areas, such as those adjacent to streams, wetlands, reservoirs,
lawns, etc.,
· In short lengths at the toe of fill where ground slopes toward the fill
· Behind curb and gutter to prevent sediment from reaching the paved street.
Prior to the start of construction, silt fence placement should be designed by a qualified
professional. Plans and specifications should be referred to by field personnel
throughout the construction process.
Use limitations include:
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· If the size of the drainage area is more than 1/4-acre per 100 feet of silt fence
length, a different sediment and erosion control strategy should be investigated.
The maximum gradient behind the barrier should be no more than 3:1.
· Under no circumstances should silt fence be constructed in live streams, in
swales, or ditch lines where flows are likely to exceed 1 cubic foot per second.
· On steep slopes, care should be given to placing the alignment of the fence
perpendicular to the general direction of the flow.
Sediment barriers, traps, and basins must be inspected and they must be cleaned out at
such time as their original capacity has been reduced by 50 percent. All material
excavated from behind sediment barriers, in traps, and/or basins shall be incorporated
into on-site soils or spread out on an upland portion of the site and stabilized. To
minimize the potential for sediment releases from the project site, perimeter control
devices shall be inspected with consideration given to changing up-gradient conditions.
Check Dams – Check dams are small temporary dams constructed across a swale or
drainage ditch for the purpose of reducing the velocity of concentrated stormwater
flows, thereby reducing erosion of the swale or ditch. Check dams also trap small
amounts of sediment generated in the ditch itself; however, these are not sediment
trapping practices and should not be used as such. Some specific applications include
the following:
· Temporary ditches or swales which, because of their short length of service,
cannot receive a non-erodible lining but still need some protection to reduce
erosion.
· Permanent ditches or swales which cannot receive a permanent non-erodible
lining for an extended period of time.
· Temporary or permanent ditches or swales which need protection during the
establishment of grass linings.
Use limitations include:
· Use limited to small open channels which drain 10 acres or less.
· Should not be used in an active stream.
· Should not to be used where high flows or high velocities are expected.
· In locating the check dam, consideration should be given to the effects and
the reach of the impounded water and sediment.
· Storm flows across a deteriorated check dam can result in the loss of the
structure and the washout of accumulated sediment.
Sediment Control Log – Sediment Control Logs are elongated tubes of compacted
straw and or other fibers that are installed along contours or at the base of slopes to
help reduce soil erosion and retain sediment. They function by shortening slope lengths,
reducing runoff water velocity thus trapping dislodged soil particles. They can work as
check dams to prevent sheet, rill, and gully erosion.
2.7 Establish Stabilized Construction Exits
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Vehicle Tracking Control – A vehicle tracking control is a pad of gravel over filter cloth
where construction traffic leaves a site. As a vehicle drives over the pad, the pad
removes mud and sediment from the wheels and reduces soil transport off the site.
Vehicle tracking control should be installed at any point where vehicular traffic will be
entering or leaving a construction site.
To maintain the vehicle tracking control, stone and gravel should be added periodically
to each stabilized construction site entrance and exit. Remove any mud and dirt clods
that accumulates to keep the stabilized pad relatively clean. In addition, any dirt clods
tracked off-site should be immediately swept or vacuumed for proper disposal.
Sediment should NOT be hosed or swept directly into any storm drain inlet, or directly
into any creek, stream, or other waterway.
2.8 Additional BMPs
· SWPPP Administrator shall continually update and monitor the stormwater
controls list and ensure that each stormwater control BMP description is added to
the SWPPP.
· Periodic Training – in addition to structural BMPs the contractor is to practice
general housekeeping and periodically train their employees.
SECTION 3: GOOD HOUSEKEEPING BMPS
3.1 Material Handling and Waste Management
Waste Management – Practices such as trash disposal, recycling, proper material
handling, and spill prevention and cleanup measures can reduce the potential for
stormwater flow to mobilize construction site wastes and contaminate surface or ground
water.
· For spills of hazardous materials, follow cleanup instructions on the package or, if
applicable, the Safety Data Sheet.
· Consult with local waste management authorities about the requirements for
disposing of hazardous materials.
· For soils containing hazardous substances, consult with state or local solid waste
regulatory agencies or private firms to ensure proper disposal. Some landfills
might accept contaminated soils, but they require laboratory tests first.
· Follow all federal, state, and local regulations that apply to the use, handling, and
disposal of pesticides and fertilizers.
· Store pesticides and fertilizers in a dry, covered area.
· Construct berms or dikes to contain stored pesticides and fertilizers in case of
spillage.
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· Have equipment and absorbent materials available in storage and application
areas to contain and clean up any spills.
3.2 Establish Proper Building Material Staging Areas
Inspections shall evaluate disturbed areas and areas used for storing materials that are
exposed to rainfall for evidence of, or the potential for, pollutants entering the drainage
system or discharging from the site. If necessary, the materials must be covered, or
original covers must be repaired or supplemented. Also, protective berms must be
constructed, if needed, to contain runoff from material storage areas. All state and local
regulations pertaining to material storage areas, will be adhered to.
3.3 Designate Washout Areas
Concrete Washout – After concrete is poured at a site, trucks must be washed out to
remove remaining concrete before it hardens. Equipment such as wheelbarrows and
hand tools also need to be washed down. Best management practices for concrete
washouts are:
· To collect and retain all the concrete washout water and solids in leakproof
containers.
· Recycle 100 percent of the collected concrete washout water and solids.
3.4 Establish Proper Equipment/Vehicle Washing and Maintenance
Practices
If vehicle maintenance and washing must occur on-site, operators should follow
appropriate best practices to prevent untreated wash water containing soaps, solvents,
detergents, nutrients, sediment, grease, or hazardous wastes from discharging into
storm drains, surface waters or groundwater. Helpful practices include:
· Inspecting construction vehicles daily and repairing leaks immediately.
· Disposing of all used oil, antifreeze, solvents, and other automotive-related
chemicals and materials according to manufacturer instructions.
· Designating special paved areas for vehicle and equipment washing.
3.6 Spill Prevention and Control Plan
Liquid and solid products may enter the environment when they leak or spill from
containers during use of transfer. Federal requirements for the construction and
development industry require that any stormwater discharge permit for construction
sites include requirements to minimize the discharge of pollutants from spills and leaks
and implement chemical spill and leak prevention and response procedures. Spill
prevention and control measures include:
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· Installing leak detection devices, overflow controls, and diversion berms.
· Installing inlet protection on storm drains.
· Storing materials in covered areas and within adequate secondary containment
structures.
If a spill occurs, it is critical that a plan and appropriate equipment be in place and
responsible parties be identified to carry out control measures immediately. A spill plan
should include components such as:
· Identification of individuals responsible for implementing control measures and
who to contact in case of a spill.
· Instructions for how to notify appropriate authorities.
· Description of procedures approved by state and local governments for
containing, diverting, isolating, and cleaning up spills.
· Description of response equipment to use.
3.7 Allowable Non-Stormwater Discharge Management
Only specifically authorized non-stormwater discharges are allowed, and all allowed
non-stormwater discharges shall be eliminated or reduced to a practical extent.
Type of Allowable Non-Stormwater Discharge Likely to be Present at
Your Site?
Discharges from uncontaminated springs that do not
originate from an area of land disturbance ☐ YES ☒ NO
Discharges to the ground of concrete washout water
associated with the washing of concrete tools and concrete
mixer chutes
☒ YES ☐ NO
Discharges of landscape irrigation return flow ☒ YES ☐ NO
Control measures must be implemented for the allowable anticipated discharges, as
listed above, for the duration of the permit. Each non-stormwater discharge should be
noted in the SWPPP and have proper erosion and sediment controls in place.
Process water, such as power washing and concrete cutting, must be collected for
treatment and disposal. It is not to be flushed into the site storm drain system.
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SECTION 4: POST-CONSTRUCTION BMPs
The Contractor is responsible for proper installation, maintenance and functioning of all
best management practices shown on the drawings until final stabilization is achieved.
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SECTION 5: INSPECTIONS
5.1 Inspections
1. Inspection Personnel: Identify the person(s) who will be responsible for conducting
inspections and describe their qualifications:
2. Inspection Schedule and Procedures:
Describe the inspection schedules and procedures you have developed for your site
(include frequency of inspections for each BMP or group of BMPs, indicate when you will
inspect, e.g., before/during/and after rain events, spot inspections):
Describe the general procedures for correcting problems when they are identified. Include
responsible staff and time frames for making corrections:
An Inspection Log is included in Appendix E of this SWPPP.
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5.2 Delegation of Authority
Duly Authorized Representative(s) or Position(s):
Company:
Name:
Position:
Address:
City, State, Zip Code:
Telephone Number:
Fax/Email:
5.3 Corrective Action Log
Corrective actions are tracked in the Corrective Action Log located in Appendix F.
Personnel Responsible for Corrective Actions
Project Foreperson
Name:
Title:
Address:
Phone:
Email:
CM Implementation
Name:
Title:
Address:
Phone:
Email:
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
18
SECTION 6: RECORDKEEPING AND TRAINING
6.1 Recordkeeping
Documentation of the inspection and maintenance of all erosion and sediment control
measures must be completed as soon as possible after an inspection and/or
maintenance is concluded but no more than 2 hours after conclusion of any inspection
of maintenance activity. In addition to inspection and maintenance reports, records
should be kept of the construction activities that occur on the site. Contractor shall retain
records of the SWPPP, all reports, and data in paper and CD format for a minimum of
three (3) years after the construction permit is terminated.
Date(s) when major grading activities occur:
Date(s) when construction activities temporarily or permanently cease on a portion of
the site:
Date(s) when an area is either temporarily or permanently stabilized:
6.2 Log of Changes to the SWPPP
Any additions, modifications, or changes in locations of CMs shown on the Erosion
Control Plan are to be documented in Appendix G and depicted on the Erosion Control
Plan within 48 hours of the change.
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
19
6.3 Training
It is suggested that the contractor provide training to all personnel who are involved with
any of the following:
· Installing, maintaining, or repairing erosion control measures;
· The application and storage of chemicals;
· Conducting inspections; and
· Taking corrective measures
A detailed Training Log is included in Appendix J.
Documentation for Completion of Training
Description Date Training Completed
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
20
SECTION 7: FINAL STABILIZATION
When construction has been completed on this project, or an area within the overall
project, the site must be permanently stabilized. Check the construction permit for
specific requirements that must be met. Sediment and erosion control devices can be
removed ones the area has been fully stabilized.
Permanent Seeding – Permanent vegetation is the establishment of perennial
vegetative cover on disturbed areas by planting seed. Its purpose is to reduce erosion
and sediment yield from disturbed areas, to permanently stabilize disturbed areas in a
manner that is economical, adaptable to site conditions, and allows selection of the
most appropriate plant materials to improve wildlife habitat and to enhance natural
beauty. The contractor must establish vegetation over the entire disturbed soil area at a
minimum density of 70 percent of the native vegetative coverage.
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
21
SECTION 8: CERTIFICATION AND NOTIFICATION
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 gathered and evaluated 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.
Name:
Title:
Signature:
Date:
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
22
SWPPP APPENDICES
Appendix A – Vicinity Map
Appendix B – Site Maps
Appendix C – Construction General Permit
Appendix D – NOI and Acknowledgement Letter from EPA/State
Appendix E – Inspection Reports
Appendix F – Corrective Action Log
Appendix G – SWPPP Amendment Log
Appendix H – Subcontractor Certifications/Agreements
Appendix I – Grading and Stabilization Activities Log
Appendix J – Training Log
Appendix K – Delegation of Authority
Appendix L – Additional Information (i.e., Endangered Species and Historic
Preservation Documentation)
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
23
Appendix A –Vicinity Map
SUNNY CIVIL
Project Location
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
24
Appendix B –Site Maps
SS SS SS SS SS SS SS SS SS SS SS SS
WV WV
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BOARD OF
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THE COLORADO
STATE UNIVERSITY
BOARD OF
GOVERNORS OF
THE COLORADO
STATE UNIVERSITY
BOARD OF
GOVERNORS OF
THE COLORADO
STATE UNIVERSITY
W PROSPECT RD
(ROW WIDTH VARIES)
W LAKE ST
(ROW WIDTH VARIES)
COURTYARD
W/DOG RUN
COURTYARD
EXISTING LAKE
ST PARKING
GARAGE AE
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COURTYARD
REF LANDSCAPE PLANS
BREEEZEWAY
PARKING
GARAGE
N
C1.0
OVERALL SITE PLAN
LEGEND
HORIZONTAL DATUM:
VERTICAL DATUM:
’
’
”
’
’
LEGAL DESCRIPTION:
FLOODPLAIN:
PROSPECT PLAZA
REDEVELOPMENT
No.Description Date
SHEET:
DATE:
PROJECT:
3575 RINGSBY CT. SUITE 411
DENVER, CO 80216
(720) 677-7766
AGENCY APPROVAL
1 SPAR (ROUND 1) 11-15-2024
2 SPAR REVISION 01-20-2025
03-18-2025
CONSULTANTS
PROSPECT PLAZA
REDEVELOPMENT
SCALE: AS NOTED
3 FDP (ROUND 1) 03-18-2025
AGENCY APPROVAL
CONSULTANTS
SS
SS SS SS SS
SS SS SS SS SS SS SS SS SS SS SS SS
IRRCONTROL
IRRCONTROL
IRRCONTROL
F.O.VAULT
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CABLE
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1 STORY BRICK AND
WOOD BUILDING
FFE = 5008.42
2.5 STORY BRICK APARTMENTS
FFE = 5007.37
2.5 STORY BRICK APARTMENTS
FFE = 5007.24
2.5 STORY BRICK APARTMENTS
FFE = 5007.05
2.5 STORY BRICK APARTMENTS
FFE = 5006.46
2.5 STORY BRICK APARTMENTS
FFE = 5006.14
2.5 STORY BRICK APARTMENTS
FFE = 5006.22
2.5 STORY BRICK APARTMENTS
FFE = 5006.39
2.5 STORY BRICK APARTMENTS
FFE = 5006.64
2.5 STORY BRICK APARTMENTS
FFE = 5006.91
2.5 STORY BRICK APARTMENTS
FFE = 5007.08
2.5 STORY BRICK APARTMENTS
FFE = 5007.43
80.0'
39
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39
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39
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39
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39
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39
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39
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5006
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500
8
N LEGEND
PROSPECT PLAZA
REDEVELOPMENT
No.Description Date
SHEET:
DATE:
PROJECT:
3575 RINGSBY CT. SUITE 411
DENVER, CO 80216
(720) 677-7766
AGENCY APPROVAL
1 SPAR (ROUND 1) 11-15-2024
2 SPAR REVISION 01-20-2025
03-18-2025
CONSULTANTS
PROSPECT PLAZA
REDEVELOPMENT
SCALE: AS NOTED
3 FDP (ROUND 1) 03-18-2025
C3.1
EROSION CONTROL PHASE I
XXXX
XXXX
XXXX
XXXX
HORIZONTAL DATUM:
VERTICAL DATUM:
FLOODPLAIN:
CONSTRUCTION & EROSION CONTROL SCHEDULE:
EROSION CONTROL NOTES:
AGENCY APPROVAL
CONSULTANTS
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5006
5005
5002
5002
5001
50025002
-4:1
-6
.
8
%
-4
:
1
-4
:
1
N LEGEND
PROSPECT PLAZA
REDEVELOPMENT
No.Description Date
SHEET:
DATE:
PROJECT:
3575 RINGSBY CT. SUITE 411
DENVER, CO 80216
(720) 677-7766
AGENCY APPROVAL
1 SPAR (ROUND 1) 11-15-2024
2 SPAR REVISION 01-20-2025
03-18-2025
CONSULTANTS
PROSPECT PLAZA
REDEVELOPMENT
SCALE: AS NOTED
3 FDP (ROUND 1) 03-18-2025
C3.2
EROSION CONTROL PHASE II
XXXX
XXXX
XXXX
XXXX
HORIZONTAL DATUM:
VERTICAL DATUM:
FLOODPLAIN:
CONSTRUCTION & EROSION CONTROL SCHEDULE:
EROSION CONTROL NOTES:
AGENCY APPROVAL
CONSULTANTS
SS SS SS SS SS SS SS SS SS SS SS SS
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D
G
HYDWV
GAS
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C
ELEC
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ELEC
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G
CS
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.
4
%
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%
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.
4
%
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3
.
7
%
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%
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.
6
%
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4
%
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.
2
%
-3.
0
%
-2
.
2
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-4
.
2
%
-2
.
1
%
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-4:1
-2
.
7
%
-2.4%
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-1.7%
-3.5%
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%
-1
.
7
%
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-1.4
%
-1
.
5
%
-1
.
7
%
-4:1
-4
:
1
-4
:
1
-4
:
1
-4
:
1
-4:
1
5007
50
0
7
50
0
8
50
0
5
5003
50
0
4
50
0
6
5002
5003
5004
50
0
0
50
0
5
50
0
5
50
0
5
50
0
4
50
0
4
50
0
4
5005
5002
500
3
50
0
4
5006
500
7
5008
50
0
6
5007
5007
500
5
500
3
50
0
4
50
0
6
50
0
7
5005
500
2
500
3
5004
5006
5007
500
8
50
0
5
5003
50
0
4
50
0
6
50
0
6
500
6
500
7
5007
50
0
1
50
0
2
5002
5003
5006
500
7
5008
50
0
7
50
0
7
5007
5006
5005
5002
5002
5001
50025002
-4:1
-6
.
8
%
-4
:
1
-4
:
1
LEGEND
PROSPECT PLAZA
REDEVELOPMENT
No.Description Date
SHEET:
DATE:
PROJECT:
3575 RINGSBY CT. SUITE 411
DENVER, CO 80216
(720) 677-7766
AGENCY APPROVAL
1 SPAR (ROUND 1) 11-15-2024
2 SPAR REVISION 01-20-2025
03-18-2025
CONSULTANTS
PROSPECT PLAZA
REDEVELOPMENT
SCALE: AS NOTED
3 FDP (ROUND 1) 03-18-2025
C3.3
EROSION CONTROL PHASE III
XXXX
XXXX
XXXX
XXXX
HORIZONTAL DATUM:
VERTICAL DATUM:
FLOODPLAIN:
CONSTRUCTION & EROSION CONTROL SCHEDULE:
EROSION CONTROL NOTES:
N
AGENCY APPROVAL
CONSULTANTS
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
25
Appendix C – Construction General Permit
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
26
Appendix D –NOI and Acknowledgment Letter from EPA/State
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
Appendix E – Inspection Reports
Agency Performing
Inspection
Date and
Time of
Inspection
Was General Contractor
Representative Present
during Inspection?
Will an Inspection Report be Issued by the Agency?
*If the Agency Stormwater Inspection occurred after the routing report was submitted and the Agency Inspector notes
deficiencies, a second inspection report must be submitted.
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
Appendix F – Corrective Action Log
Date
Discovered
Location Description of Inadequate Control
Measure
Corrective Action Needed (including
planned date/responsible person)
Date Action
Taken/Responsible
person
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
Appendix G – SWPPP Amendment Log
No. Description of the Amendment Date of
Amendment
Amendment Prepared by
[Name(s) / Title]
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
Appendix H –Subcontractor Certifications/Agreements
SUBCONTRACTOR CERTIFICATION
STORMWATER POLLUTION PREVENTION PLAN
Project Number:
Project Title:
Operator(s):
As a subcontractor, you are required to comply with the Stormwater Pollution
Prevention Plan (SWPPP) for any work that you perform on-site. Any person or group
who violates any condition of the SWPPP may be subject to substantial penalties or
loss of contract. You are encouraged to advise each of your employees working on this
project of the requirements of the SWPPP. A copy of the SWPPP is available for your
review at the office trailer.
Each subcontractor engaged in activities at the construction site that could impact
stormwater must be identified and sign the following certification statement:
I certify under the penalty of law that I have read and understand the terms and
conditions of the SWPPP for the above designated project and agree to follow the
BMPs and practices described in the SWPPP.
This certification is hereby signed in reference to the above named project:
Company:
Address:
Telephone Number:
Type of construction service to be provided:
Signature:
Title:
Date:
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
Appendix I – Grading and Stabilization Activities Log
Date
Grading
Activity
Initiated
Description of Grading Activity Date Grading
Activity Ceased
(Indicate
Temporary or
Permanent)
Date When
Stabilization
Measures
are Initiated
Description of Stabilization Measure
and Location
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
Appendix J – SWPPP Training Log
Stormwater Pollution Prevention Training Log
Project Name:
Project Location:
Instructor’s Name(s):
Instructor’s Title(s):
Course Location: Date:
Course Length (hours):
Stormwater Training Topic: (check as appropriate)
Erosion Control BMPs Emergency Procedures
Sediment Control
BMPs
Good Housekeeping BMPs
Non-Stormwater BMPs
Specific Training Objective:
Attendee Roster: (attach additional pages as necessary)
No. Name of Attendee Company
1
2
3
4
5
6
7
8
9
10
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
Appendix K –Delegation of Authority Form
Delegation of Authority
I, _______________________ (name), hereby designate the person or specifically
described position below to be a duly authorized representative for the purpose of
overseeing compliance with environmental requirements, including the Construction
General Permit, at the ____________________________________ construction site.
The designee is authorized to sign any reports, stormwater pollution prevention plans
and all other documents required by the permit.
________________________________________ (name of person or position)
________________________________________ (company)
________________________________________ (address)
________________________________________ (city, state, zip)
________________________________________ (phone)
By signing this authorization, I confirm that I meet the requirements to make such a
designation as set forth in the Construction General Permit (CGP), and that the
designee above meets the definition of a responsible officer.
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 gathered and evaluated 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.
Name:
Company:
Title:
Signature:
Date:
Stormwater Management Plan (SWMP)
Prospect Plaza Redevelopment 03.19.2025
EPA SWPPP Template, Version 1.1, September 17, 2007
Appendix L –Additional Information
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