HomeMy WebLinkAboutReports - Erosion Control - 04/23/2025 EROSION CONTROL REPORT
FOR
LIBERTY COMMON JUNIOR HIGH
FORT COLLINS, CO
Owner/Developer:
LCS Building Corporation
3003 E. Harmony Road, Suite 300
Fort Collins, CO 80528
Contact: Peter Kast
Phone: 970.372.3845
Email: peter.kast@cbre.com
Contractor:
NEENAN ARCHISTRUCTION
3325 S. Timberline Road, Suite 100
Fort Collins, CO 80525
Contact: Shelby Hinchliff
Phone: 970.218.9607
Email: Shelby.hinchliff@neenan.com
Design Engineer:
ELEVATION CONSULTING GROUP,LTD
P.O. Box 280869
Lakewood, CO 80226
Contact: Lincoln Thomas, P.E.
Phone: 303.204.5065
Email: Ithomas@elevationeivil.com
SWMP Administrator:
NEENAN ARCHISTRUCTION
3325 S. Timberline Road, Suite 100
Fort Collins, CO 80525
Contact: TBD
Phone:
Email:
April 23, 2025
Erosion Control Report
Liberty Common Junior High
TABLE OF CONTENTS
Project Description and Nature of Construction............................................................................. 4
SiteLocation............................................................................................................................... 4
ExistingSite Condition............................................................................................................... 5
Proposed Construction Activities ............................................................................................... 5
Potential Pollutant Sources............................................................................................................. 6
Construction Control Measures .................................................................................................... 10
Installation and Removal Sequence of Construction Measures.................................................... 11
Maintenance and Inspection Requirements.................................................................................. 11
Final Vegetation and Stabilization................................................................................................ 12
References................................................................................................................................. 17
Appendices................................................................................................................................ 18
Appendix A—Reference Information
Appendix B —Contaminants of Concern Table
Appendix C — Spill Containment Plan
Appendix D—BMP Installation and Remove Sequence Chart
Appendix E—Inspection Report
Appendix F— SWMP Plans and Details
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ENGINNER'S CERTIFICATION
I hereby certify that this Erosion Control Report for the design of Liberty Common Junior High
was prepared by me (or under my direct supervision) in accordance with the provisions of the City
of Fort Collins Manual for the owners thereof.
Lincoln J. Thomas, PE
State of Colorado No. 42350
For and on behalf of Elevation Consulting
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Project Description and Nature of Construction
Site Location
The proposed project will include minor parking lot improvements, utility services, landscaping
and 17,240 s.£building addition between the existing 1825 and 1901 Sharp Point Drive buildings.
The majority of the existing improvements within the Site are to remain. Two water quality ponds
will be constructed to the east of the new building addition.
E PROSPECT RD
-•� i PROJECT SITE
Figure 1-1
Vicinity Map
Liberty Common Junior High (Site) is located within Section 20, Township 7, North, Range 68
West of the 6th P.M. The Site is bounded by Sharp Point Drive to the northeast; March Court to
the northwest; Canton Court to the southeast; and Liberty Common Elementary School, 2601
Riverbend Court, 2609 Riverbend Court and 2600 Canton Court, to the southwest.
The Site is located on the parcels#8720105004 and#8720105008.
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The Site Address is 1825 Sharp Point Drive.
Global Positioning System coordinates are 40.562314, -105.028440
Existing Site Condition
The majority of soils for the Site are Loveland clay loam.
NRCS hydrologic soils group C
Wind Erodibility Group 6 and Wind erodibility Index of 48
Erosion factors: Kw=0.20, Kf--0.20, T=3
Refer to NRCS Physical Soil Properties Report,NRCS Hydrologic Soil Group and Surface Runoff
Report, Liberty School Additional Geotechnical Engineering Report excerpts In Appendix A for
additional information on soil properties.
The Site is located within the Cache La Poudre River Basin, no floodplains existing on the Site
per LOMR Case No. 23-08-0780P issued March 18, 2024 for Flood Insurance Rate Map (FIRM)
Panel 1013, Map No. 08069C 1013F. Runoff from the Site is collected in area drains within the
site and conveyed through underground storm sewer pipes to Merganser Pond on the northeast
side of Sharp Point Drive before outfalling to the Cache La Poudre River. Merganser Pond is
approximately 65 feet from the Site.
The Site is 4.05 acres, including the vacated right-of-way for Riverbend Court. Current
improvements within the Site consist of 1825 Sharp Point Drive, an existing multi-tenant office
building and parking lot; Riverbend Court, an existing cul-de-sac; and 1901 Sharp Point Drive,
an existing multi-tenant office building and parking lot. The existing grades are flat to steep
ranging from less than 1%to 24%.
Existing Vegetation is mostly turf with some minor areas of rock mulch and bare ground. Pervious
Area is 0.74 Acres (18% Imperviousness).
Groundwater was encountered at depths of approximately 6 to 13.3 feet below existing grades
during Geotechnical investigation.
There are no major irrigation facilities or springs within or adjacent to the Site.
Phase 1 ESA revealed no evidence of recognized environmental conditions (RECs), controlled
recognized environmental conditions(CRECs),or historical recognized environmental conditions
(HRECs) connection with the site.
Proposed Construction Activities
Construction includes minor parking lot improvements, utility services, landscaping and 17,240
s.f. building addition between 1825 and 1901 Sharp Point Drive buildings. The proposed
construction activities associated with this report are Pre-Disturbance& Site Access,Demolition,
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Grading & Excavation, Building Construction, Utility Construction and Paving, Final Grading
Landscaping & Installation of Final Stabilization Measures with the total area of these proposed
grading activities being 1.33 acres of the 4.05 acre Total Project Area. The remainder of the site
will not be disturbed, therefore minimizing soil exposure.
There will be approximately 137 cubic yards of import material to complete grading operations.
Additional Permits required:
• Colorado Department of Public Health and Environment (CDPHE) Construction
Stormwater Construction Discharge Permit
Potential Pollutant Sources
All potential pollutant sources, including materials and activities,were evaluated for the potential
to contribute pollutants to stormwater discharges. This SWMP will identify and describe those
sources that have the potential to contribute pollutants to stormwater discharges. Potential
pollutant sources will be controlled through control measure selection and implementation. The
following potential pollutant sources were evaluated for this project.
• Disturbed and stored soils — Yes- Approximately 33% percent of this Site will be
disturbed with the Construction Activities. Once soils have been disturbed they do not
retain the same compaction as in their native state, therefore surface runoff can cause
more soil erosion than was historically observed. Once exposed those areas of exposed
soils will be kept in a roughened condition(Surface Roughening). In the event that these
erosion control practices do not keep sediment on site a structural barrier(Silt Fence)will
be used and is called out for on the perimeter. If soil manages to migrate from the
disturbed areas onto the hard surfaces it will be swept or scraped (Street Sweeping) to
prevent the migration of sediment. In case that sediment is washed away too quickly the
curb inlets will need protection (Inlet Protection). Stockpiles in the same respect do not
retain the same compaction and are more susceptible to soil erosion. Stockpiles on this
site will require perimeter run off controls (Stockpile Management). The stockpile will
be kept loose, not compacted, and watered as needed to prevent dust issues (Dust
Control). The stockpile will be monitored for signs of erosion displacement and sediment
accumulation.
• Vehicle tracking of sediments—Yes-Vehicle tracking of sediment may occur throughout
the construction process and along all areas where the pavement meets the disturbed dirt.
This occurs most often after any melt off or rain conditions when mud collects on vehicles
tires and is tracked out onto the road consequently leaving site. This increases the
possibility of sediment discharging to the storm system.To prevent tracking,construction
fence will be used to limit the access by the contractor and their subs to only one
construction entrance(Vehicle Tracking Control) off of Sharp Point Drive. There will be
a gate at the entrance that will be closed before contractors come on site during the muddy
days (site management control) and will only be opened to let larger deliveries drop off,
otherwise subcontractor parking will be kept to the existing parking lot. The tracking
pad will be monitored visually every day and if track-out becomes a significant problem
a larger or more robust tracking pad may be installed. Otherwise, all track-out that
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reaches the street will be scraped and swept(Street Sweeping). Secondary controls at the
closest affected combination inlets will have protection (Inlet Protection) to capture
sediment not swept up in a timely manner.
• Management of Contaminated Soils—No
• Loading and unloading_operations — Yes - During this project there will be a diverse
amount of loading and unloading going on. There will be a significant amount of export
leaving the site, the foundation workers will have to deliver forms to the site and deliver
premixed concrete. Building materials will have to be staged around the site and
Landscapers will have to pile the materials on site to complete the landscape work.
Though the loading and loading vehicles will be contributing to the track out of materials,
depending on the material being delivered to the site they may have a significant spill
potential. In addition to the vehicle tracking of sediments section of this report, (Vehicle
Tracking Control, Street Sweeping, etc.) contractors will be required to park their
vehicles within the existing parking lot (site management control). The only vehicles
allowed on site will be fork lifts, concrete trucks, and the like(site management control).
Where the trailers must access the site an attempt will be made to keep the vehicle within
the exiting parking lot. Within the existing parking lot, materials will be placed in piles
along the hardscape the use of site forklifts will be more heavily used. When loading and
unloading is occurring, depending on the materials, there may be an increased problem
of containers being dropped, punctured, or broken. These off-loading activities will be
done under roofs or awnings where possible, locating away from storm drains and will
have nearby spill kits accessible. Spills on site will be addressed using spill prevention
and response procedures.
• Outdoor storage of construction materials, building materials, fertilizers, and chemicals
—Yes-It is anticipated that inert material like wood, shingles,tiles, siding insulation and
stone will be stored on site and outside in the elements.It is also anticipated that materials
that do not weather well (cement, mortar, etc.) will also be located outside. Chemicals
are not anticipated to be left outside.As the inert materials have a lower potential to leave
the site they will be monitored during inspection to make sure they are not being impacted
by the exposure to the elements. (Good Housekeeping Practices) The materials that will
need added attention are the cements and mortars as they quickly mix with water and
cause pollution issues. These materials when not stored inside will be placed on pallets
to get above potential surface runoff and covered with tarps or plastic to prevent mixing
with stormwater(materials management control). Very small quantities of chemical are
needed to contaminate stormwater so the fertilizers, paints, form oils, petroleum
products, and other typical chemicals, will be stored in the construction connex box,
trailers, vehicles, or the like out of contact with precipitation (Good Housekeeping
Practices). If not stored in a location as described, secondary containment will be
required.
• Bulk Storage of Materials—No
• Vehicle and equipment maintenance and fueling—No -Based on the size of the site and
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the short window of activities vehicle fueling and vehicle maintenance is highly unlikely.
As fueling and equipment maintenance usually result in small spills of petroleum
products it is important to monitor these activities carefully. (Good Housekeeping
Practices) If onsite maintenance or fueling is required, it will be done in the least
detrimental way possible. The maintenance and fueling will be located as far from
stormwater features as possible and at least 50 feet from a stormwater feature (Good
Housekeeping Practices). The fueling activity will have spill materials nearby and a
bucket or other container and shovel located nearby to hang a hose after filling to catch
drips,and to scoop up any dirt that inadvertently mixed with the soil(Good Housekeeping
Practices). That container will have a lid and be disposed of when the activity is
completed. The maintenance work will be done on a tarp or other material to prevent the
residual oils and greases from mixing with the dirt (Good Housekeeping Practices).
• Significant dust or particulate generating processes — Yes - This project will result in
earth moving activities, street sweeping, and track-out and carry out, construction
materials transport, and saw cutting. As these activities will result in offsite transport of
atmospheric pollution reasonable precautions shall be taken. The project will follow all
required"BMPs"articulated in the Fort Collins Dust Prevention and Control Manual and
a least one additional BMP included during each of the identified activities in accordance
with City Ordinance No. 044,2016. Also a copy of the Fort Collins Dust Prevention and
Control Manual will be kept in the trailer during construction for reference. Such
activities will include but not limited to watering the site, covering trucks, slower site
speeds and vehicle tracking mentioned above.
• Routine maintenance activities involving fertilizers, pesticides, detergents, fuels,
solvents, and oils — Yes - Fertilizers and Pesticides will be used during the later phases
of the project when trying to establish a healthy vegetation. These chemicals are highly
water soluble and are easily and unnoticeably carried in the stormwater. Proper
application rates and recommended timing of application will be strictly followed and
not on days, or the next day, where the weather is calling for precipitation (Good
Housekeeping Practices). As most of these types of chemicals will be brought on by the
Landscaper they will be required to keep these products in their vehicles until time of
application and not be allowed to leave these materials on the site (Good Housekeeping
Practices). If these materials are stored on site they shall be kept inside or outside covered
and above the ground to prevent the materials from mixing with water and runoff(Good
Housekeeping Practices). Detergents, paints, acids, cement, grout, and solvents will be
prevalent in the interior work of the building. These materials also are typically easily
mixed with water yet are typically noticeable by discolored, cloudy, or sudsy water. As
such, the contractor will always keep an eye out for these types of differences in water
around the site (Good Housekeeping Practices). However these materials are to be
handled, operated, and cleaned up all within the inside of the structure, where external
use is concerned these materials will be stored in the construction connex box, trailers,
vehicles, or the like out of contact with precipitation (Good Housekeeping Practices). If
not stored in a location as described secondary containment will be required (materials
management). Fuels and oils might be associated with the smaller equipment used on
site, chainsaws, pumps, generators, etc. As petroleum products are easily suspended in
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water and are spread across the top of the water surface. These products when located in
water have rainbow sheen on them. They are also monitored during construction (site
management controls). These products will be stored in the construction connex box,
trailers, vehicles, or similar structure that will minimize contact with precipitation
(materials maintenance controls). If not stored in a location as described secondary
containment will be required(Good Housekeeping Practices). Any untreated runoff from
these activities can be detrimental to wildlife if not cleaned up.
• On-site waste management_ practices waste piles, liquid wastes, dumpsters, etc.)—Yes -
All large and heavy weighted waste piles (concrete chunks, excavated pipes, etc.)will be
kept in a neat grouped pile until the material is to be disposed of properly. These piles
will only be stored a short duration 5-10 days and will be kept 50 feet from any drainage
course or inlet. All dry wastes will be maintained through dumpsters and monthly hauler
removal (hauler will be notified if dumpster becomes full and hauled off as needed).
Where available by the hauling company the dumpster will be covered. If not practical
or available by the haul company, an increased removal schedule will be followed and
the "Max fill line" on the dumpster will be strictly followed. Corners of the dumpsters
will be monitored for "Dumpster Juice" leaking into the soil in dry conditions and
rain/melt off conditions looking for it mixing with the runoff. Dumpsters, like the waste
piles, will be located at least 50 feet from any drainage course or inlet. Workers will be
sent around at the end of the day to collect trash to prevent trash being left out overnight.
• Concrete truck/equipment washing, including the concrete truck chute and associated
fixtures and equipment — Yes - Concrete will be a large portion of this project. It is
anticipated that it will be used with pour in place inlets, curb and gutter installation,
sidewalks, and foundations. Pre mixed concrete trucks will be used in this process and
will be delivered to the site and when pouring the foundation a pump truck will be used
all of which will need to be maintained through the washing of their chutes and pump
arms to prevent the concrete from hardening and ruining the equipment. This concrete
wash water has a high alkaline content which is hazardous material to terrestrial and
aquatic wildlife. Concrete Washout Area will be located at least 50 feet from any
drainage course. The contractor (including all masonry and concrete tradesmen) shall
clean out equipment within the washout area so that the runoff is not allowed to leave the
washout. The only exception would be for them to wash in the next day's pour location.
All concrete workers will be made aware of where they are to wash. If there is a
significant amount of spillage when the transfer from concrete truck to pump truck
occurs, a tarp or other ground cloth should be used to collect spillage. (Good
Housekeeping Practices).
• Dedicated asphalt and concrete batch plants—No
• Non-industrial waste sources such as worker trash and portable toilets—Yes - Trash and
sanitary facilities will be required on the site. Worker trash will be comingled with the
industrial trash and will follow the same controls. If tipped over and when being cleaned,
portable toilet facilities become a potential discharge if not cleaned up. If human waste
is spilled, it will need to be treated as a biological hazard of untreated sewage and will
need to be cleaned up in accordance with Larimer County Health Department Guidance.
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The toilets will be secured in a way to prevent tipping and located at least 50 feet from a
drainage course or inlet. A containment pan or other secondary containment will be
provided. They will also be anchored prevent from tipping. All materials shall be
properly disposed of in accordance with the law.
• Sawcutting and Grinding—Yes-The trench work will require cutting into the City street.
This project will need the use of hardened saws.These saws generate a significant amount
of dust. Watering the cutting surface to prevent airborne particulates (BMP in the Fort
Collins Dust Prevention and Control Manual) is required. The cutting slurry has a high
content of fine particulates (Silica Dust, Metals, etc.) that is not allowed to discharge as
runoff from the site. To prevent slurry from discharging offsite, contractors will use the
minimum amount of water needed to prevent dust and blades from overheating. Cutting
slurry will be collected via vacuum or allowed to dry out and be scraped and swept up
after the cutting has finished.
• Ground Water Dewatering—No-Based upon the geotechnical data, ground water levels
indicate that it will be lower than the bottom of the deepest excavation. However, if
encountered, dewatering activities may be required. Groundwater has in most
excavations mixed with the dirt and as they are pumped they will add an increased
velocity coming out of the out flow end contributing to erosion and speeding the transport
of the suspended sediment particles. Also, construction dewatering activities must be
identified in the Erosion Control Report if they are to be infiltrated on site. If the material
is anticipated to be pumped to a stormwater conveyance the proper Construction
Dewatering Permit must be pulled from the State of Colorado. If pumping activities are
to occur on the site, the use of rock packs on the intake end of the pump will be used and
a silt bag will be used on the outflow end of the pump to reduce the silt and sediment
from leaving the activity (dewatering Control Measure). If this will be under a
Dewatering Permit water samples will be collected in accordance with that permit.
Additional potential contaminants of concern can be found in the table in Appendix B.
Construction Control Measures
• Silt Fence down gradient of all disturbed area to intercept/filter sediment laden runoff.
• Construction Fence to prevent public from accessing construction site.
• Rock Sock to intercept/filter sediment laden runoff within Street curb and gutter.
• Stockpile Mana eg ment for temporary storage of cut and import material.
• Vehicle Tracking Control shall be installed at construction entrance into disturbed area.
All construction traffic shall enter and exit through this entrance.
• Concrete Washout Area to isolate concrete truck washout operations.
• Inlet Protection to reduce sediment runoff approaching inlets by placing a reinforced rock
berm in front if,but not blocking a curb-opening inlet or area inlet.
• Surface Roughening to create a series of grooves or furrows on the contour in disturbed,
graded areas to trap runoff and reduce the formation of rill and gully erosion. Also used
to minimize sediment transport via wind.
• Dust Control - Minimizing wind erosion and controlling fugitive dust will be
accomplished by surface roughening the soil to produce ridges perpendicular to the
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prevailing wind and frequent watering of excavation, fill and unvegetated areas.
• Street Sweeping: Streets will be swept if site conditions show accumulations of dirt that
require removal. These practices will be implemented anywhere sediment is tracked
from the project site onto public or private paved roads.
• Sod/Landscape Stabilization to provide soil protection through new plant growth (sod
and seed),plantings,trees, mulching (rock or wood mulch)
• Good Housekeeping Practices:
o Chemical Mana_et: Chemical management includes the proper labeling,
handling, storage and disposal of chemical products. All materials stored on-site,
including fertilizers or herbicides used during landscaping, will be inspected to
ensure proper use and disposal to reduce the risk of spills or other accidental
exposure to stormwater runoff. Products will be kept in their original containers
with the original manufacturer's label. Manufacturers' recommendations for
proper use and disposal will be followed. Whenever possible, all of a product
will be used up before disposing of the container. Substances will not be mixed
with one another unless recommended by the manufacturer. No solid materials,
including building materials, will be discharged to waters of the United States.
o Solid Waste Mana_e�: Trash and debris will be limited onsite to the degree
possible. Trash and debris will be disposed of in the proper waste receptacles.
Covered dumpsters shall be provided in the combined staging area. Full
dumpsters will be removed from the site or disposed of by trash hauling
contractors as necessary.
o Equipment Maintenance Procedures: If required, a stabilized area for equipment
maintenance and equipment storage shall be located onsite. Vehicle equipment
and maintenance areas shall be inspected regularly and on each day of use.
Vehicles and equipment stored on-site will be inspected for fuel or lubricant
leakage to reduce the risk of contamination to stormwater runoff. Substances that
have the potential for polluting surface and/or groundwater shall be controlled by
whatever means necessary in order to ensure that they do not discharge from the
site. If a spill occurs, it will be contained and disposed so that it will not flow
from the site or enter groundwater.
o Spill Prevention and Control Plan: See Appendix C
Installation and Removal Sequence of Construction Measures
See chart in Appendix D
Maintenance and Inspection Requirements
Routine inspections shall be performed at the site to ensure that BMP's are functional and that the
SWMP is being properly implemented. The site will be inspected a minimum once every 14
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calendar days and also within 24 hours after the end of any precipitation or snowmelt event that
causes surface erosion. Contractor shall make repairs and clean out of BMPs as necessary. More
frequent inspections and repairs shall be required during winter conditions due to freeze/thaw
problems.
A report shall be prepared documenting any findings on the conditions of the SWMP controls and
any erosion problem areas. All measures will be maintained in good working order. If a repair is
necessary, it will be initiated within 24-hours of the inspection report.
Inspections shall include all areas of the site disturbed by construction activity and areas used for
storage of materials that are exposed to precipitation. Sedimentation and erosion control measures
will be inspected to ensure they are operating correctly to prevent significant impacts to receiving
waters. Locations where vehicles enter or exit the site shall be inspected for evidence of offsite
sediment tracking.
An inspection report shall be completed after each inspection documenting BMP's and areas
inspected and the conditions found. Any revisions to the SWMP to add or modify BMP's to
correct problems shall occur within 7 days. The inspection reports and any follow-up action taken
shall be retained as part of the SWMP for three years from the date that the permit coverage
expires or is terminated.
Refer to Erosion Control Detail sheets in Appendix F for maintenance for each Construction
Control Measure.
Final Vegetation and Stabilization
Once construction is complete, final stabilization will be achieved through site improvements
including paved areas, landscaping, seeding and ground cover. Areas where sod will be installed
per the approved landscape plan and will require soil amendments and soil bed preparation per City
of Fort Collins Section 12-160-162 code requirements. Sodded areas will be installed using rolled
sod and will be irrigated with permanent irrigation. Sodded areas will be considered stabilized
immediately upon installation. Sod installation should generally be completed between April 15
and October 1.
Areas where shrubs, ornamental grasses and perennials will be installed (planting beds) per the
approved landscape plan and will require soil amendments and soil bed preparation per City of Fort
Collins Section 12-160-162 code requirements. Planting beds will be installed with container
plantings per the landscape plan and planting schedule. Planting beds will be mulched with organic
wood mulch or cobble mulch per the landscape plan and will be considered stabilized immediately
upon installation of the specified mulch. Planting should generally be completed between April 15
and October 1.
Areas that require seeding per the approved landscape plan will require soil amendments and soil
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bed preparation per City of Fort Collins Section 12-160-162 code requirements. Seeding will be
performed based on the approved specifications and landscape planting plans. Seeded areas will be
irrigated with a permanent irrigation system. Proposed seed mixes have been provided below. All
seeded areas will be mulched with either crimped straw or hydromulch within four (4) hours of
seeding. If required and called out on the approved plans and specifications, additional erosion
control blanket will be installed to address areas of higher potential for erosion. Seeded areas will
be considered stabilized following installation of the approved mulching material and method and
additional erosion control materials as required.
Seeding should generally be completed between April 15 and October 1. Seeding dates may be
modified when temperature and moisture conditions are favorable subject to Project Manager
approval. Once installed all seeding will be monitored until the site has reached a vegetative cover
(density) of 70%. It is anticipated that the site will be seeded in the fall of 2025 and will be fully
established in the fall of 2027. At the point the vegetation has reached 70%density, and confirmed
by the City of Fort Collins, the warranty period for Erosion Control will begin, all stormwater
infrastructure will be cleaned and removed of any sediment deposits and any remaining temporary
Control Measures will be removed.
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DETENTION BASIN MIX
Common Name Scientific Name lbs/PLS/Acre
Plains coreopsis Coreopsis tinctotia 0.17
3 White prairie clover Dalea candida 0.65
Purple Prairie Clover Dalea puipuzea 0.81
b
3 Indian blanketflower Gaillardia aristata 1.85
Mexican hat Ratibida columnifera 0.2
Indian Ricegrass Achnathetum hymenoides 1.13
Sideoats Grama Bouteloua curtipendula 1.15
Buffalograss Bouteloua dactyloides 3.27
Blue Grama Bouteloza gracilis 0.25
v Inland Saltgrass Distichlis snicta 0.35
Bottlebrush squirreltail El_vmus elvmoides 0.95
C7
Streambank wheatgrass Elynnis lanceolatus ssp. lanceolanls 1.36
Prairie 7unegrass Koeleria mactantha 0.08
Western Wheatgrass Pascopytum smithii 1.61
Little Bluestein Schizachynum scoparium 0.7
Total for Detention Basin Mix 14.54 lbs/PLS/Acre
ACCEPTABLE SUBSTITUTES FOR WILDFLOWERS
Blue flax(Linum lewisii)0.83 lbs/PLS/Acre
Black-eyed Susan(Rudbeckia hirta)0.14 lbs/PLS/Acre
Prairie aster(Machaeranthera tanacetifolia)0.49 lbs/PLS/Acre
ACCEPTABLE SUBSTITUTES FOR GRASSES
Salt and pepper grass(Deschampsia caespitosa)0.07 lbs/PLS/Acre
Six weeks fescue(Vulpia octoflora)0.19 lbs/PLS/Acre
Slender wheatgrass(Elymus trachvcanlus)1.36 lbs/PLS/Acre
c *Contractor is responsible for locating and purchasing all species listed in mix.If a species can't be located,contractor must replace each
Emissing species with the acceptable substitutions(fisted above).Contractor is responsible for providing seed tags to appropriate City staff.
This mix is based on 70 seeds/square foot and is only calculated for one acre.This mix is based on the contractor using a drill seed
S application.Mix should be doubled if hand broadcasted Contractor is responsible for calculating the appropriate seed amounts to purchase.
Please note that the pounds per acre are m PLS(Pure Live Seed)and must be ordered that way. All materials furnished shall be flee of
Colorado State noxious weeds as defined in Article Ill,Section 2140 of the Code of the City of Fort Collins.
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UPLAND MIX
Common Name Scientific Name lbs/PLS/Acre
Plains coreopsis Coreopsis tinctoria 0.17
3 Purple Prairie Clover Dalea putpurea 0.81
° Indian blanketflowe Gaillatdia aristata 1.85
w
a
3 Rocky.Mtn.penstemon Penstemon strtctus 0.35
Mexican hat Ratibida columnifera 0.2
Indian ricegrass Achnatherum hymenoides 1.13
Sideoats grama Bouteloua curtipendula 1.15
Buffalograss Bouteloua dactyloides 3.27
Blue grama Bouteloua gracilis 0.25
Bottlebrush squirreltail Elymus elymoides 0.95
JPrairie Junegrass Koeleria macrantha 0.08
Green needlegrass Nassella 1,h idula 1.01
Switchgrass Panicum vitgattnn 0.71
Western Wheat Pascopyrum smithii 1.61
Sand dropseed Sporobohis cryptandrzis 0.04
Total for Upland Mix 13.58 lbs/PLS/Acre
ACCEPTABLE SUBSTITUTES FOR WILDFLOWERS
Fringed sage(Artemisia frigida)0.03 Ibs/PLS/Acre
y Blue flax(Linum lewisii)0.41 lbs/PLS/Acre
Prairie aster(Machaeranthera tanacetifolia)0.25 lbs/PLS/Acre
°
ACCEPTABLE SUBSTITUTES FOR GRASSES
Canada wildrye(Elymus canadensis)1.591bs/PLS/Acre _
Inland saltgrass(Distichlis stricia)0.351bs/PLS/Acre
Mountain muhly(Muhlenbergia montana)0.11 lbs/PLS/Acre
14 *Contractor is responsible for locating and purchasing all species listed in mix.If a species can't be located,contactor must replace
each missing species with the acceptable substitutions(listed above).Contractor is responsible for providing seed tags to appropriate
^� City staff.This mix is based on 70 seeds/square foot and is only calculated for one acre.This mix is based on the contractor using a
Q drill seed application.Mix should be doubled if hand broadcasted Contractor is responsible for calculating the appropriate seed
3 amounts to purchase. Please note that the pounds per acre are in PIS(Pure Live Seed)and must be ordered that way. All materials
a'
famished shall be free of Colorado State noxious weeds as defined in Article III,Section 2140 of the Code of the City of Fort
Collins.
Elevation Consulting Page
15
Erosion Control Report
Liberty Common Junior High
MESIC MIX
Common Name Scientific Name Ibs/PLS/Acre
a, Smooth aster Aster laevis 0.19
3 White prairie clover Dalea candida 0.65
Purple Prairie Clover Dalea purpurea 0.81
3 Indian blanketflower Gaillardia aristata 1.85
Black-eyed Susan Rudbeckia hirta 0.14
Big Bluestem Andropogon gerardii 1.3
Salt and pepper grass Deschampsia caespitosa 0.07
Inland Saltgrass Distichlis stricta 0.35
Elymus lanceolatus ssp.
Streambank wheatgrass lanceolatus 1.36
Switchgrass Panicum virgatum 0.71
C7 Western Wheatgrass Pascopyrum smithii 1.61
Fowl bluegrass Poa pahistris 0.18
Little Bluestem Schizachyrium scoparium 0.7
Yellow Indiangrass Sorghastrum nutans 1.38
Prairie Cordgrass Spartina pectinata 1
Total for Mesic Mix 112.31 lbs/PLS/Acre
ACCEPTABLE SUBSTITUTIONS FOR WILDFLOWERS
Mexican hat(Ratibida cohrmnifera)0.10 lbs/PLS/Acre
Marsh sunflower(Helianthus nuttallti)0.56 lbs/PLS/Acre
Beebalm(Monarda fistulosa var.menthifolia)0.09 lbs/PLS/Acre
ACCEPTABLE SUBSTITUTIONS FOR GRASSES
American sloughgrass(Beckmannia syzigachne)0.20 lbs/PLS/Acre
Alkali sacaton(Sporobolus airoides)0.11 lbs/PLS/Acre
Prairie sandreed(Calamovilfa longifolia)0.67 lbs/PLS/Acre
G "Contractor is responsible for locating and purchasing all species listed in mix.If a species can't be located,contractor must replace
each missing species with the acceptable substitutions(listed above).Contractor is responsible for providing seed tags to appropriate
0 City staff.This mix is based on 70 seeds/square foot and is only calculated for one acre.This mix is based on the contractor using a
Ej drill seed application.Mix should be doubled if hand broadcasted. Contractor is responsible for calculating the appropriate seed
amounts to purchase. Please note that the pounds per acre are in PLS(Pure Live Seed)and must be ordered that way. All materials
furnished shall be free of Colorado State noxious weeds as defined in Article III,Section 2140 of the Code of the City of Fort Collins.
Elevation Consulting Page
16
Erosion Control Report
Liberty Common Junior High
References
1. Fort Collins Stormwater Criteria Manual— City of Fort Collins, December 2018.
2. Urban Storm Drainage Criteria Manual — Mile High Flood District, 2010.
3. Dust Prevention and Control Manual— City of Fort Collins, May 2016.
4. Liberty School Addition Geotechnical Engineering Report— Terracon, February
18, 2025.
5. Phase I Environmental Site Assessment Lake Center— Blackstone Consulting
LLC, November 15, 2021.
6. Phase I Environmental Site Assessment Sharp Point—Blackstone Consulting LLC,
November 15, 2021.
Elevation Consulting Page
17
Erosion Control Report
Liberty Common Junior High
Appendices
Appendix A—Reference Information
Appendix B —Contaminants of Concern Table
Appendix C— Spill Prevention and Control Plan
Appendix D—BMP Installation and Remove Sequence Chart
Appendix E—Inspection Report
Appendix F— SWMP Plans and Details
Elevation Consulting Page
18
Erosion Control Report
Liberty Common Junior High
APPENDIX A
REFERENCE
INFORMATION
Elevation Consulting Page
19
Soil Map—Larimer County Area,Colorado _3:
(Liberty Common Junior Hlgh)
0 0
497380 497420 4974W 4975M 497540 4975BO 497620 4976M 497700 497740
40°33 4S"N � � I 40°33'48"N
e
�3
o � o
I
soil Map may not b_ v.lid at this scale.
40°33'40"N I - - I 40°33 40"N
ddd 497380 497420 497460 497500 497540 497580 497620 497660 497700 497740
3 3
Map Scale:1:1,760 if printed on A landscape(11"x 8.5")sheet
G N Meters
0 25 50 100 150
Feet
0 50 100 200 300
Map projection:Web Mercator Comer coordinates:WGS84 Edge tics:UTM Zone 13N WGS84
USDA Natural Resources Web Soil Survey 4/10/2025
Conservation Service National Cooperative Soil Survey Page 1 of 3
Soil Map—Larimer County Area,Colorado
(Liberty Common Junior Hlgh)
MAP LEGEND MAP INFORMATION
Area of Interest(AOI) - Spoil Area The soil surveys that comprise your AOI were mapped at
Area of Interest(AOI) 1:24,000.
Q Stony Spot
Soils Very Stony Spot Warning:Soil Map may not be valid at this scale.
Soil Map Unit Polygons
Wet Spot Enlargement of maps beyond the scale of mapping can cause
Soil Map Unit Lines misunderstanding of the detail of mapping and accuracy of soil
13 Other line placement.The maps do not show the small areas of
Soil Map Unit Points Special Line Features contrasting soils that could have been shown at a more detailed
.�
Special Point Features scale.
V Blowout Water Features
Streams and Canals Please rely on the bar scale on each map sheet for map
Borrow Pit measurements.
Transportation
X Clay Spot .,. Rails Source of Map: Natural Resources Conservation Service
Closed Depression Web Soil Survey URL:
..i Interstate Highways Coordinate System: Web Mercator(EPSG:3857)
Gravel Pit US Routes
Maps from the Web Soil Survey are based on the Web Mercator
Gravelly Spot Major Roads projection,which preserves direction and shape but distorts
distance and area.A projection that preserves area,such as the
r Landfill Local Roads Albers equal-area conic projection,should be used if more
Lava Flow Background accurate calculations of distance or area are required.
Marsh or swamp ® Aerial Photography This product is generated from the USDA-NRCS certified data as
of the version dates)listed below.
Mine or Quarry
Soil Survey Area: Larimer County Area,Colorado
Miscellaneous Water Survey Area Data: Version 19,Aug 29,2024
Perennial Water Soil map units are labeled(as space allows)for map scales
Rock Outcrop 1:50,000 or larger.
Saline Spot Date(s)aerial images were photographed: Jul 2,2021—Aug 25,
2021
Sandy Spot
The orthophoto or other base map on which the soil lines were
.. Severely Eroded Spot compiled and digitized probably differs from the background
Sinkhole imagery displayed on these maps.As a result,some minor
shifting of map unit boundaries may be evident.
Slide or Slip
oa Sodic Spot
USDA Natural Resources Web Soil Survey 4/10/2025
Conservation Service National Cooperative Soil Survey Page 2 of 3
Soil Map—Larimer County Area,Colorado Liberty Common Junior Hlgh
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
22 Caruso clay loam,0 to 1 1.6 23.4%
percent slope
64 Loveland clay loam,0 to 1 5.1 76.6%
percent slopes
105 Table Mountain loam,0 to 1 0.0 0.0%
percent slopes
Totals for Area of Interest 6.7 100.0%
USDA Natural Resources Web Soil Survey 4/10/2025
Conservation Service National Cooperative Soil Survey Page 3 of 3
Hydrologic Soil Group and Surface Runoff---Larimer County Area,Colorado Liberty Common Junior Hlgh
Hydrologic Soil Group and Surface Runoff
This table gives estimates of various soil water features. The estimates are used
in land use planning that involves engineering considerations.
Hydrologic soil groups are based on estimates of runoff potential. Soils are
assigned to one of four groups according to the rate of water infiltration when the
soils are not protected by vegetation, are thoroughly wet, and receive
precipitation from long-duration storms.
The four hydrologic soil groups are:
Group A. Soils having a high infiltration rate (low runoff potential)when
thoroughly wet. These consist mainly of deep, well drained to excessively
drained sands or gravelly sands. These soils have a high rate of water
transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These
consist chiefly of moderately deep or deep, moderately well drained or well
drained soils that have moderately fine texture to moderately coarse texture.
These soils have a moderate rate of water transmission.
Group C. Soils having a slow infiltration rate when thoroughly wet. These consist
chiefly of soils having a layer that impedes the downward movement of water or
soils of moderately fine texture or fine texture. These soils have a slow rate of
water transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential)when
thoroughly wet. These consist chiefly of clays that have a high shrink-swell
potential, soils that have a high water table, soils that have a claypan or clay
layer at or near the surface, and soils that are shallow over nearly impervious
material. These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is
for drained areas and the second is for undrained areas.
Surface runoff refers to the loss of water from an area by flow over the land
surface. Surface runoff classes are based on slope, climate, and vegetative
cover. The concept indicates relative runoff for very specific conditions. It is
assumed that the surface of the soil is bare and that the retention of surface
water resulting from irregularities in the ground surface is minimal. The classes
are negligible, very low, low, medium, high, and very high.
Report—Hydrologic Soil Group and Surface Runoff
Absence of an entry indicates that the data were not estimated. The dash
indicates no documented presence.
Hydrologic Soil Group and Surface Runoff—Larimer County Area,Colorado
Map symbol and soil name Pct.of map unit Surface Runoff Hydrologic Soil Group
22—Caruso clay loam,0 to 1 percent slope
Caruso 85 High D
USDA Natural Resources Web Soil Survey 4/10/2025
Conservation Service National Cooperative Soil Survey Page 1 of 2
Hydrologic Soil Group and Surface Runoff---Larimer County Area,Colorado Liberty Common Junior Hlgh
Hydrologic Soil Group and Surface Runoff—Larimer County Area,Colorado
Map symbol and soil name Pct.of map unit Surface Runoff Hydrologic Soil Group
64—Loveland clay loam,0 to 1 percent slopes
Loveland 90 Medium C
105—Table Mountain loam,0 to 1 percent slopes
Table mountain 85 Low B
Data Source Information
Soil Survey Area: Larimer County Area, Colorado
Survey Area Data: Version 19, Aug 29, 2024
USDA Natural Resources Web Soil Survey 4/10/2025
Conservation Service National Cooperative Soil Survey Page 2 of 2
Physical Soil Properties---Larimer County Area,Colorado Liberty Common Junior Hlgh
Physical Soil Properties
This table shows estimates of some physical characteristics and features that
affect soil behavior. These estimates are given for the layers of each soil in the
survey area. The estimates are based on field observations and on test data for
these and similar soils.
Depth to the upper and lower boundaries of each layer is indicated.
Particle size is the effective diameter of a soil particle as measured by
sedimentation, sieving, or micrometric methods. Particle sizes are expressed as
classes with specific effective diameter class limits. The broad classes are sand,
silt, and clay, ranging from the larger to the smaller.
Sand as a soil separate consists of mineral soil particles that are 0.05 millimeter
to 2 millimeters in diameter. In this table, the estimated sand content of each soil
layer is given as a percentage, by weight, of the soil material that is less than 2
millimeters in diameter.
Silt as a soil separate consists of mineral soil particles that are 0.002 to 0.05
millimeter in diameter. In this table, the estimated silt content of each soil layer is
given as a percentage, by weight, of the soil material that is less than 2
millimeters in diameter.
Clay as a soil separate consists of mineral soil particles that are less than 0.002
millimeter in diameter. In this table, the estimated clay content of each soil layer
is given as a percentage, by weight, of the soil material that is less than 2
millimeters in diameter.
The content of sand, silt, and clay affects the physical behavior of a soil. Particle
size is important for engineering and agronomic interpretations, for determination
of soil hydrologic qualities, and for soil classification.
The amount and kind of clay affect the fertility and physical condition of the soil
and the ability of the soil to adsorb cations and to retain moisture. They influence
shrink-swell potential, saturated hydraulic conductivity (Ksat), plasticity, the ease
of soil dispersion, and other soil properties. The amount and kind of clay in a soil
also affect tillage and earthmoving operations.
Moist bulk density is the weight of soil (ovendry) per unit volume. Volume is
measured when the soil is at field moisture capacity, that is, the moisture content
at 1/3-or 1/10-bar(33kPa or 10kPa) moisture tension. Weight is determined after
the soil is dried at 105 degrees C. In the table, the estimated moist bulk density
of each soil horizon is expressed in grams per cubic centimeter of soil material
that is less than 2 millimeters in diameter. Bulk density data are used to compute
linear extensibility, shrink-swell potential, available water capacity, total pore
space, and other soil properties. The moist bulk density of a soil indicates the
pore space available for water and roots. Depending on soil texture, a bulk
density of more than 1.4 can restrict water storage and root penetration. Moist
bulk density is influenced by texture, kind of clay, content of organic matter, and
soil structure.
USDA Natural Resources Web Soil Survey 4/10/2025
Conservation Service National Cooperative Soil Survey Page 1 of 5
Physical Soil Properties---Larimer County Area,Colorado Liberty Common Junior Hlgh
Saturated hydraulic conductivity(Ksat) refers to the ease with which pores in a
saturated soil transmit water. The estimates in the table are expressed in terms
of micrometers per second. They are based on soil characteristics observed in
the field, particularly structure, porosity, and texture. Saturated hydraulic
conductivity (Ksat) is considered in the design of soil drainage systems and
septic tank absorption fields.
Available water capacity refers to the quantity of water that the soil is capable of
storing for use by plants. The capacity for water storage is given in inches of
water per inch of soil for each soil layer. The capacity varies, depending on soil
properties that affect retention of water. The most important properties are the
content of organic matter, soil texture, bulk density, and soil structure. Available
water capacity is an important factor in the choice of plants or crops to be grown
and in the design and management of irrigation systems. Available water
capacity is not an estimate of the quantity of water actually available to plants at
any given time.
Linear extensibility refers to the change in length of an unconfined clod as
moisture content is decreased from a moist to a dry state. It is an expression of
the volume change between the water content of the clod at 1/3-or 1/10-bar
tension (33kPa or 10kPa tension)and oven dryness. The volume change is
reported in the table as percent change for the whole soil. The amount and type
of clay minerals in the soil influence volume change.
Linear extensibility is used to determine the shrink-swell potential of soils. The
shrink-swell potential is low if the soil has a linear extensibility of less than 3
percent; moderate if 3 to 6 percent; high if 6 to 9 percent; and very high if more
than 9 percent. If the linear extensibility is more than 3, shrinking and swelling
can cause damage to buildings, roads, and other structures and to plant roots.
Special design commonly is needed.
Organic matter is the plant and animal residue in the soil at various stages of
decomposition. In this table, the estimated content of organic matter is expressed
as a percentage, by weight, of the soil material that is less than 2 millimeters in
diameter. The content of organic matter in a soil can be maintained by returning
crop residue to the soil.
Organic matter has a positive effect on available water capacity, water infiltration,
soil organism activity, and tilth. It is a source of nitrogen and other nutrients for
crops and soil organisms.
Erosion factors are shown in the table as the K factor(Kw and Kf) and the T
factor. Erosion factor K indicates the susceptibility of a soil to sheet and rill
erosion by water. Factor K is one of six factors used in the Universal Soil Loss
Equation (USLE) and the Revised Universal Soil Loss Equation (RUSLE)to
predict the average annual rate of soil loss by sheet and rill erosion in tons per
acre per year. The estimates are based primarily on percentage of silt, sand, and
organic matter and on soil structure and Ksat. Values of K range from 0.02 to
0.69. Other factors being equal, the higher the value, the more susceptible the
soil is to sheet and rill erosion by water.
Erosion factor Kw indicates the erodibility of the whole soil. The estimates are
modified by the presence of rock fragments.
Erosion factor Kf indicates the erodibility of the fine-earth fraction, or the material
less than 2 millimeters in size.
USDA Natural Resources Web Soil Survey 4/10/2025
Conservation Service National Cooperative Soil Survey Page 2 of 5
Physical Soil Properties---Larimer County Area,Colorado Liberty Common Junior Hlgh
Erosion factor T is an estimate of the maximum average annual rate of soil
erosion by wind and/or water that can occur without affecting crop productivity
over a sustained period. The rate is in tons per acre per year.
Wind erodibility groups are made up of soils that have similar properties affecting
their susceptibility to wind erosion in cultivated areas. The soils assigned to
group 1 are the most susceptible to wind erosion, and those assigned to group 8
are the least susceptible. The groups are described in the "National Soil Survey
Handbook."
Wind erodibility index is a numerical value indicating the susceptibility of soil to
wind erosion, or the tons per acre per year that can be expected to be lost to
wind erosion. There is a close correlation between wind erosion and the texture
of the surface layer, the size and durability of surface clods, rock fragments,
organic matter, and a calcareous reaction. Soil moisture and frozen soil layers
also influence wind erosion.
Reference:
United States Department of Agriculture, Natural Resources Conservation
Service. National soil survey handbook, title 430-VI. (http://soils.usda.gov)
USDA Natural Resources Web Soil Survey 4/10/2025
Conservation Service National Cooperative Soil Survey Page 3 of 5
Physical Soil Properties---Larimer County Area,Colorado Liberty Common Junior Hlgh
Report—Physical Soil Properties
Physical Soil Properties—Larimer County Area,Colorado
Map symbol Depth Sand Silt Clay Moist Saturated Available Linear Organic Erosion Wind Wind
and soil name bulk hydraulic water extensibility matter factors erodibility erodibility
density conductivity capacity group index
Kw Kf T
In Pct Pct Pct g/cc micro m/sec In/In Pct Pct
22—Caruso
clay loam,0
to 1 percent
slope
Caruso 0-35 -35- -34- 27-31-35 1.25-1.35 0.42-1.41 0.18-0.21 0.0-2.9 1.0-2.0 .32 .32 4 6 48
35-44 -64- -27- 5-9-13 1.35-1.50 14.11-42.34 0.06-0.13 0.0-2.9 0.5-1.0 .32 .32
44-60 -97- -2- 0-2-3 1.45-1.60 141.14-705.00 0.02-0.04 0.0-2.9 0.0-0.5 .02 .05
64—Loveland
clay loam,0
to 1 percent
slopes
Loveland 0-15 -33- -32- 30-35-40 1.20-1.25 1.41-4.23 0.18-0.20 3.0-5.9 1.0-3.0 .20 .20 3 6 48
15-32 -35- -38- 18-27-35 1.35-1.45 4.23-14.11 0.18-0.20 0.0-2.9 1.0-2.0 .32 .32
32-60 -96- -2- 0-3-5 1.55-1.65 141.14-705.00 0.03-0.06 0.0-2.9 0.0-0.5 .02 .05
105—Table
Mountain
loam,0 to 1
percent
slopes
Table 0-36 -44- -41- 10-15-20 1.25-1.40 4.23-14.11 0.14-0.18 0.0-2.9 1.0-4.0 .37 .37 5 5 56
mountain
36-60 -37- -35- 20-28-35 1.25-1.40 4.23-14.11 0.14-0.20 0.0-2.9 0.5-2.0 .32 .32
sun Natural Resources Web Soil Survey 4/10/2025
IIIIIM Conservation Service National Cooperative Soil Survey Page 4 of 5
Physical Soil Properties---Larimer County Area,Colorado Liberty Common Junior Hlgh
Data Source Information
Soil Survey Area: Larimer County Area, Colorado
Survey Area Data: Version 19, Aug 29, 2024
USDA Natural Resources Web Soil Survey 4/10/2025
Conservation Service National Cooperative Soil Survey Page 5 of 5
National Flood Hazard Layer FIRMette (.. FEMA Legend
105°2'1"W 40033'58"N SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT
ggpp FEET 490�FEET Without Base Flood Elevation(BFE)
4.• Zone A.V.A99
SPECIAL FLOOD With BFE or Depth Zone AE.AO.AH.VE.AR
HAZARD AREAS Regulatory Floodway
A 0.2%Annual Chance Flood Hazard,Areas
F of 1%annual chance flood with average
depth less than one foot or with drainage
A�p�gF areas of less than one square mile zonex
Zone A ® Future Conditions 1%Annual
s ®� Chance Flood Hazard Zone
-� L�MR -0�SP Area with Reduced Flood Risk due to
efij2RU2010 OTHER AREAS OF Levee.See Notes.zone x
FLOOD HAZARD Area with Flood Risk due to Levee zone o
NO SCREEN Area of Minimal Flood Hazard zone x
Q Effective LOMRs
1 a0 1 OTHER AREAS Area of Undetermined Flood Hazard zone o
4
--GENERAL - - Channel,Culvert,or Storm Sewer
STRUCTURES IIIIIII Levee,Dike,or Floodwall
-
: p�� A• �� &-MA Cross Sections with 1%Annual Chance
Aa93' A�3 17.5 Water Surface Elevation
`CIty.Of Fort Colluis] CI /1/7111�A/AV e- - - Coastal Transect
O 1 rr LV V V•rill -513- Base Flood Elevation Line(BFE)
�0�102WSZOE Limit of Study
r 1RNw S� Jurisdiction Boundary
Coastal Transect Baseline
AREA OF MINIMAL FLOOD HAZA I _,t��`' OTHER _ - Profile Baseline
FEATURES
Zone X EET�92 F Hydrographic Feature
4892 FEET
SITE Digital Data Available N
ET No Digital Data Available
4891.E FE
_ MAP PANELS Unmapped
g1 FE - O
11a The pin displayed on the map is an approximate
point selected by the user and does not represent
# an authoritative property location.
tW This map complies with FEMA's standards for the use of
digital flood maps if it is not void as described below.
_ IM ,.gyp FEES The basemap shown complies with FEMA's basemap
A '9 accuracy standards
fF
The flood hazard information is derived directly from the
authoritative NFHL web services provided by FEMA.This map
was exported on 10/28/2024 at 9:00 PM and does not
reflect changes or amendments subsequent to this date and
time.The NFHL and effective information may change or
become superseded by new data over time.
�i
This map image is void if the one or more of the following map
elements do not appear:basemap imagery,flood zone labels,
legend,scale bar,map creation date,community identifiers,
105°1'23"W 40°33'31"N FIRM panel number,and FIRM effective date.Map images for
Feet 1:6 000 unmapped and unmodernized areas cannot be used for
0 250 500 1,000 1,500 2,000 regulatory purposes.
Basemap Imagery Source:USGS National Map 2023
Liberty School Addition
Geotechnical Engineering Report
Fort Collins, Colorado
February 18, 2025 1 Terracon Project No. P20245058
Prepared for:
LCS Building Corporation
1725 Sharp Point Drive
Fort Collins, Colorado 80525
rracon
Explore with us
Nationwide ■ Facilities
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■ Geotechnical
Terracon.com ■ Materials
Geotechnical Engineering Report y������0�
Liberty School Addition I Fort Collins, Colorado r
February 18, 2025 1 Terracon Project No. P20245058
Exploration Plan
orm
Approximate Boring Locations
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DIAGRAM IS FOR GENERAL LOCATION ONLY,AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES MAP PROVIDED BY MICROSOFT BING MAPS
Facilities I Environmental I Geotechnical I Materials
Liberty School Addition lFrerracon
1825 and 1901 Sharp Point Drive I Fort Collins,CO 1901 Sharp Point Dr Ste C
Terracon Project No.20245058 Fort Collins,CO
Boring Log No. B-1
o, Location: See Exploration Plan
N N v n Vl Qv Atterber g
° vo Limits
.'5? C ki aC
� y Latitude:40.5624o Longitude:-105.02810
C VI
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Depth Ft. Approximate Elevation: 4897 Ft.
ASPHALT,about 4 inches thick
o�o AGGREGATE BASE COURSE,about 20 inches
-0 D 2.0 thick 4895
o POORLY GRADED SAND WITH GRAVEL,with 12 23 1.1
o cobbles, brown with gray, pink and red, 35/12"
�o. medium dense to very dense
o. —
o _ 15-23-31 0.9
�o Jr N=54
0
50/6" 6.7
0
2
o. 9-6-10 13.0
0 1 N=16
�o.
0
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O.
�o. 11-11 9.6 127
o. 1 22/12'
.16.0 4881
CLAYSTONE BEDROCK, light gray to dark
nouu 24:0gray,very hard
50 5" 18.1
2
3
50/4" 14.8 112
2
29.4 4867.E 50 5" 22.4
Boring Terminated at 29.4 Feet
See Exploration and Testing Procedures for a description of field and laboratory Water Level Observations Drill Rig
procedures used and additional data(If any). 7 feet while drilling CME 55
See Supporting Information for explanation of symbols and abbreviations. 9 feet at completion of drilling Hammer Type
Elevation Reference: Elevations were interpolated from a publicly available USGS Automatic,Hammer
topographic map Efficiency=68%
Driller
Notes Advancement Method Terracon Consultants
4.25-inch inside diameter,continuous-flight,hollow-stem
augers Loogged by
Abandonment Method Boring Started
01-30-2025
Borings were backfilled with cementitous flowable fill and
patched with asphalt Boring Completed
01-30-2025
Facilities I Environmental I Geotechnical I Materials
Liberty School Addition lFrerracon
1825 and 1901 Sharp Point Drive I Fort Collins,CO 1901 Sharp Point Dr Ste C
Terracon Project No.20245058 Fort Collins,CO
Boring Log No. B-2
o, Location: See Exploration Plan
N N v n Vl Qv Atterber g
° vo Limits
.'5? C ki aC
� y Latitude:40.5624o Longitude:-105.0283o
C VI
CO o 0 o c u } 5+ a) v
v L t o �_ ^ oarn 0a�
o N E v a� c E v c 0' LL-PL-PI M
C7 0 p in
cn �U- U
Depth Ft. Approximate Elevation: 4897 Ft.
0.7 ASPHALT,about 8 inches thick 4896.3
FILL-SANDY LEAN CLAY(CL),dark brown
1 5-
2/712 +0.3/200 19.2 108 41-16 25 66.5
1 "
4.0 4893 _
a POORLY GRADED SAND WITH GRAVEL,with 3-8-11
o cobbles, brown with gray,pink and red, ,r N=19 2.1
�o. medium dense to very dense
34-46 2.0
a 80/12"
�o.
a. 18-24-25 5.8
0 1 N=49
�o.
o .
2
o.
loose at about 14 feet 4 11 14.1 97
a.
1 15/12"
o .
�O.
0,
o .
�O.
o
0 44-50/4" 18.6 107
�0 2
C 21.0 4876
CLAYSTONE BEDROCK, light gray to dark
gray,very hard
RAFAJ
50/5" 18.1 100
3 2
29.3 4867.7 50 3" ILL
Terminated at 29,3 Feet
See Exploration and Testing Procedures for a description of field and laboratory Water Level Observations Drill Rig
procedures used and additional data(If any). 6 feet while drilling CME 75
See Supporting Information for explanation of symbols and abbreviations. 7 feet at completion of drilling Hammer Type
Elevation Reference: Elevations were interpolated from a publicly available USGS Automatic,Hammer
topographic map Efficiency=95%
Driller
Notes Advancement Method Terracon Consultants
4.25-inch inside diameter,continuous-flight,hollow-stem
augers Loogged by
Abandonment Method Boring Started
01-21-2025
Borings were backfilled with cementitous flowable fill and
patched with asphalt Boring Completed
01-21-2025
Facilities I Environmental I Geotechnical I Materials
Liberty School Addition lFrerracon
1825 and 1901 Sharp Point Drive I Fort Collins,CO 1901 Sharp Point Dr Ste C
Terracon Project No.20245058 Fort Collins,CO
Boring Log No. B-3
o, Location: See Exploration Plan
TN m e T N N v n Vl Qv Atterber g
° vo Limits
.'5? C ki aC
� y Latitude:40.5623o Longitude:-105.0286o
C VI
CO o 0 o c u } 5+ a) v
v L t o �_ ^ oarn 0a�
o N E v a� c E v c 0' LL-PL-PI a�
C7 0 p in
cn �U- U
Depth Ft. Approximate Elevation: 4898 Ft.
0.7 ASPHALT,about 8 inches thick 4897.3
FILL-SANDY LEAN CLAY,dark brown
7
1 6 10 +0.5/200 21.1 100
16/12"
4.0 4894 _
0. POORLY GRADED SAND WITH SILT AND 16-20-25
o. GRAVEL(SP-SMI,with cobbles,tan to brown 5— N=45 1.8 NP 8.4
�o with gray, red and pink,dense to very dense
D
'0
�O
29-34 0.9
0 63/12"
'o
18-26-25
o: 4.4
'n j C N=51
�o
o.
2 a
�o
0
'o
0 11-50/5" 5.6 132
o:
1
'o
�o
p
'o
�o
0
° 20.0 4878 13-14-24 19.4
CLAYSTONE BEDROCK, light gray to 2 N=38
905-0151 V50dark gray, very hard
nouu
Ualtlill
50/5" 4010 17.7 110 51-20-31 97
3 2
29.4 4868.E 50 5" 18.6
Boring Terminated at 29.4 Feet
See Exploration and Testing Procedures for a description of field and laboratory Water Level Observations Drill Rig
procedures used and additional data(If any). v 13 feet while drilling CME 75
See Supporting Information for explanation of symbols and abbreviations. _SZ_ 7.7 feet at completion of drilling Hammer Type
Elevation Reference: Elevations were interpolated from a publicly available USGS Automatic,Hammer
topographic map Efficiency=95%
Driller
Notes Advancement Method Terracon Consultants
4.25-inch inside diameter,continuous-flight,hollow-stem
augers Loogged by
Abandonment Method Boring Started
01-21-2025
Borings were backfilled with cementitous flowable fill and
patched with asphalt Boring Completed
01-21-2025
Facilities i Environmental i Geotechnical i Materials
Liberty School Addition lFrerracon
1825 and 1901 Sharp Point Drive I Fort Collins,CO 1901 Sharp Point Dr Ste C
Terracon Project No.20245058 Fort Collins,CO
Boring Log No. B-4
o, Location: See Exploration Plan
TN m e T N N v n Vl Qv Atterber g
° vo Limits
.'5? C ki aC
� y Latitude:40.5625o Longitude:-105.0290o
C VI
CO o 0 o c u } 5+ a) v
v L t o �_ ^ oarn 0a�
o N E v a� c E v c 0' LL-PL-PI M
C7 0 �0 U)
cn _J U W U
Depth Ft. Approximate Elevation: 4896 Ft.
ASPHALT,about 4 inches thick
FILL-SANDY SILT(ML),dark brown
6 8 20.4 107
14/12"
1
3-4 <-0.1/500 20.8 103 NP 51.8
5 7/12"
1.7.0 4889
o _ POORLY GRADED SAND WITH GRAVEL, 18-20-21
o brown with gray, pink and red, medium dense N=41 6.5
2 �o, to dense
o.
° 10.0 4886 17-27 13.5
Boring Terminated at SO Feet 1 44 12"
See Exploration and Testing Procedures for a description of field and laboratory Water Level Observations Drill Rig
procedures used and additional data(If any). No free water observed CME 75
See Supporting Information for explanation of symbols and abbreviations.
Hammer Type
Elevation Reference: Elevations were interpolated from a publicly available USGS Automatic,Hammer
topographic map Efficiency=95%
Driller
Notes Advancement Method Terracon Consultants
4-inch outside diameter,continuous-flight,solid-stem
augers Loogged by
Abandonment Method Boring Started
01-21-2025
Borings were backfilled with cementitous flowable fill and
patched with asphalt Boring Completed
01-21-2025
Facilities i Environmental i Geotechnical i Materials
Liberty School Addition lFrerracon
1825 and 1901 Sharp Point Drive I Fort Collins,CO 1901 Sharp Point Dr Ste C
Terracon Project No.20245058 Fort Collins,CO
Boring Log No. B-5
o, Location: See Exploration Plan
TN m e T N N v n Vl Qv Atterber g
° vo Limits
.'5? C ki aC
� y Latitude:40.5618o Longitude:-105.0282o
C VI
CO o 0 o c u } 5+ a) v
v L t o �_ ^ oarn 0a� t ��
o N E v a� c E v c p� LL-PL-PI M
C7 0 00 U) o
cn _J U W U
Depth Ft. Approximate Elevation: 4895 Ft.
ASPHALT,about 4 inches thick
1 FILL-SANDY LEAN CLAY,dark brown
2.0 4893
.o. POORLY GRADED SAND WITH GRAVEL,tan to 6 27 1.3 123
o _ brown with gray, red and pink, medium dense
�o. to very dense 33/12"
o.
o _ 17-32 1.3 118
�0 5 49/12"'
2 0.
o .
o. 8-50/6" 2.8
o .
C.
�O.
0 10.0 4885 32-47 6.3
Boring Terminated at SO Feet 1 79 12"
See Exploration and Testing Procedures for a description of field and laboratory Water Level Observations Drill Rig
procedures used and additional data(If any). No free water observed CME 75
See Supporting Information for explanation of symbols and abbreviations.
Hammer Type
Elevation Reference: Elevations were interpolated from a publicly available USGS Automatic,Hammer
topographic map Efficiency=95%
Driller
Notes Advancement Method Terracon Consultants
4-inch outside diameter,continuous-flight,solid-stem
augers Loogged by
Abandonment Method Boring Started
01-21-2025
Borings were backfilled with cementitous flowable fill and
patched with asphalt Boring Completed
01-21-2025
Facilities i Environmental i Geotechnical i Materials
Liberty School Addition Ferracon
1825 and 1901 Sharp Point Drive I Fort Collins,CO 1901 Sharp Point Dr Ste C
Terracon Project No.20245058 Fort Collins,CO
Grain Size Distribution
ASTM D422 / ASTM C136
U.S. Sieve Opening in Inches U.S. Sieve Numbers Hydrometer
6 4 3 2 1.5 1 3/4 1/23/8 3 4 6 810 1416 20 30 40 50 60 100140200
0
100
95
90 10
85
80 20
75
70 30
65
60 40
m
a 55
>.50 50 n
9 0
m
c 45 m
LL 0-
u 40 60 `<
v
a 35 rt
30 70
25
20 80
15
10 90
5
0 100
100 10 1 0.1 0.01 0.001
Grain Size(mm)
Cobbles Gravel Sand Silt or Clay
coarse fine coarse medium fine
Boring ID Depth(Ft) USCS Classification USCS AASHTO LL PL PI Cc Cu
• B-2 2-3 SANDY LEAN CLAY CL A-7-6(14) 41 16 25
m B-3 4-5.5 POORLY GRADED SAND with SILT and SP-SM A-1-a(0) NP NP NP 0.66 40.08
GRAVEL
A B-3 24- 24.4 CLAYSTONE BEDROCK CH A-7-6(33) 51 20 31
�r B-4 4- 5 SANDY SILT ML A-4(0) NP NP NP
Boring ID Depth(Ft) Dioo D60 D30 Dio %Cobbles %Gravel %Sand %Fines %silt %Clay
• B-2 2-3 9.5 0.0 0.2 33.2 66.5
m B-3 4-5.5 37.5 5.952 0.763 0.149 0.0 44.2 47.5 8.4
A B-3 24- 24.4 4.75 0.0 0.0 3.0 97.0
* B-4 4- 5 12.5 0.12 0.0 2.3 45.9 51.8
Facilities i Environmental i Geotechnical i Materials
CDN#3493A-001
so
PHASE I ENVIRONMENTAL SITE ASSESSMENT
LAKE CENTER
2601 and 2609 Riverbend Court, 2600 Canton Court &
1901 Sharp Point Drive
Fort Collins, Larimer County, Colorado 80525
Prepared for:
Ogilvie Partners, LLC and
West Hampden Investors, LLC
November 15, 2021
Project Number: OGPIC0001.01
•
BLACKSTONECONSULTING.COM
CDN#3493A-001
Phase I Environmental Site Assessment
P40 Lake Center
Fort Collins,Larimer County,Colorado
Blackstone Project:OGPIC0001.01
EXECUTIVE SUMMARY
Rimkus Consulting Group, Inc., DBA Blackstone Consulting LLC (Blackstone) performed a Phase I
Environmental Site Assessment (Phase I ESA) of the Lake Center office buildings located at 2601, 2609
Riverbend Court, 2600 Canton Court and 1901 Sharp Point Drive in Fort Collins, Larimer County, Colorado
(site). Blackstone understands that this assessment is being performed as part of a potential acquisition.
The purpose of the Phase I ESA is to identify recognized environmental conditions (RECs) in accordance
with ASTM Standard E1527-13, and to evaluate other agreed-upon ASTM Non-Scope Considerations
(Business Environmental Risk Issues)as appropriate.
SITE INSPECTION
Name of Inspector: Porter P. Morgan
Date of Inspection: November 4, 2021
Site Representative: Ms. Terri Hanna, Property Manager, and Mr. Gregg Orth, Facilities
Manager, both with W.W. Reynolds Companies
SITE DESCRIPTION
Street Address: 2601 and 2609 Riverbend Court, 2600 Canton Court, and 1901 Sharp
Point Drive
City and State: Fort Collins, Colorado
County: Larimer
Legal Description: Larimer County Assessor Parcel Identification Numbers:
8720105007
8720105008
8720105010
Owner(s): PP Lake Center LLC
Site Size: Approximately 3.488 acres
Site Use: The site is comprised of four, single-story multi-tenant industrial
warehouse buildings.The buildings are occupied by Terracon Consultants
(office), Cyclone Cycles (bike assembly shop), Air Resource Specialists
(office and light assembly of air sensors), Peak Precision Technologies,
Inc. (office), Poehlmann Construction (office), MMS Environmental Labs
(office and laboratory), Murphy Company (office), Reprographics, Inc.
(printing — water-based inks), Custom Canvas (banner printing — water-
based inks), and Fastenal, Inc. (parts warehousing). The facility also has
i
CDN#3493A-001
Phase I Environmental Site Assessment
Lake Center
Fort Collins,Larimer County,Colorado
Blackstone Project:OGPICC001.01
10.0 CONCLUSIONS AND RECOMMENDATIONS
Blackstone performed a Phase I ESA of the site in conformance with the scope and limitations of ASTM
Standard Practice E1527-13, the regulations at 40 CFR Part 312, and the October 27th, proposal
(Agreement) between Ogilvie Partners, LLC and Blackstone. Any exceptions to or deletions from this
practice are described in Sections 1.2 through 1.4 of this report.This assessment has revealed no evidence
of recognized environmental conditions (RECs), controlled recognized environmental conditions (CRECs),
or historical recognized environmental conditions(HRECs)connection with the site.
The following historical recognized environmental condition (HREC)was identified in connection with the
site:
■ Impacts from Former Tenant PCB Colorado (2601 Riverbend Court): As previously discussed,
limited soil impacts were identified and remediated from two areas of this former tenant
operation, with confirmation soil sampling performed. Additional soil and groundwater
investigations performed did not identify any additional contaminants on the site. Based on the
results of the investigations and remedial action completed on the site, with no elevated
contaminants remaining,the former impacts to the soil beneath the site are considered an HREC.
The following Business Environmental Risk Issues were identified in connection with the site:
■ Monitoring Well(s): One monitoring well was observed in the parking lot on the site during the
current inspection. This well is presumed to be one of the three wells installed as a part of the
investigations performed on the site in 1990 and 1991; however, the other two wells were not
observed. Based on the reported results of the groundwater investigations performed in 1990
and 1991, this remnant well is not considered as REC. However, Blackstone has not reviewed
records related to the proper abandonment of the wells on the site.As such,the presence of the
well(s) is considered a Business Environmental Risk Issue. All of the former well locations should
be identified, and the wells should be properly abandoned in accordance with all applicable
regulations.
■ Chemicals and Materials Storage: Blackstone observed several areas of stored chemical
containers without secondary containment. The stored materials were observed in good
condition with no evidence of spills or leaks; therefore,the stored materials are not considered a
REC. However,all chemicals should be properly stored in appropriate cabinets and with secondary
containment equipment to minimize the impact of any release.
39
CDN#3493A-002
PHASE I ENVIRONMENTAL SITE ASSESSMENT
SHARP POINT
1825 Sharp Point Drive
Fort Collins, Larimer County, Colorado 80525
Prepared for:
Ogilvie Partners, LLC and
West Hampden Investors, LLC
November 15, 2021
Project Number: OGPIC0001.05
•
BLACKSTONECONSULTING.COM
CDN#3493A-002
Phase I Environmental Site Assessment
P40 Sharp Point
Fort Collins,Larimer County,Colorado
Blackstone Project:OGPIC001.05
EXECUTIVE SUMMARY
Rimkus Consulting Group, Inc., DBA Blackstone Consulting LLC (Blackstone) performed a Phase I
Environmental Site Assessment(Phase I ESA) of the flex space commercial building located at 1825 Sharp
Point Drive in Fort Collins, Larimer County, Colorado (site). Blackstone understands that this assessment
is being performed as part of a potential acquisition. The purpose of the Phase I ESA is to identify
recognized environmental conditions(RECs)in accordance with ASTM Standard E1527-13,and to evaluate
other agreed-upon ASTM Non-Scope Considerations(Business Environmental Risk Issues)as appropriate.
SITE INSPECTION
Name of Inspector: Porter P. Morgan
Date of Inspection: November 4, 2021
Site Representative: Ms. Terri Hanna, Property Manager, and Mr. Gregg Orth, Facilities
Manager, both with W.W. Reynolds Companies
SITE DESCRIPTION
Street Address: 1825 Sharp Point Drive
City and State: Fort Collins, Colorado
County: Larimer
Legal Description: Larimer County Assessor Parcel Identification Number: 8720105004
Owner(s): PP Sharp Point, LLC
Site Size: Approximately 1.811 acres
Site Use: The site is improved with a single-story, multi-tenant flex space
commercial facility.The building is occupied by Onix IT(office), Niner(bike
assembly and office), and Turning Point Spinal Care (medical office). No
significant fabrication, repair, and/or manufacturing activities take place
at the site.
Year(s) Built: 1988
Structure(s) Location Number of Stories Size
On Site (approx. square feet)
Site Building Central 1 19,226
i
CDN#3493A-002
Phase I Environmental Site Assessment
Sharp Point
Fort Collins,Larimer County,Colorado
Blackstone Project:OGPIC001.05
10.0 CONCLUSIONS AND RECOMMENDATIONS
Blackstone performed a Phase I ESA of the site in conformance with the scope and limitations of ASTM
Standard Practice E1527-13, the regulations at 40 CFR Part 312, and the October 27th, proposal
(Agreement) between Ogilvie Partners, LLC and Blackstone. Any exceptions to or deletions from this
practice are described in Sections 1.2 through 1.4 of this report.This assessment has revealed no evidence
of recognized environmental conditions (RECs), controlled recognized environmental conditions (CRECs),
or historical recognized environmental conditions(HRECs)connection with the site.
32
Erosion Control Report
Liberty Common Junior High
APPENDIX B
CONTAMINANTS
OF CONCERN
TABLE
Elevation Consulting Page
20
Materials Stormwater Pollutants Potential Pollutants BMP
Bedding Stockpiles Sediment Entire site Silt Fence/Dust
Control
Boring Opterations, Sediment, slurry, Bore sites, site Optimize water use,
Concrete Cutting concrete fines, perimeters,pothole excess water shall be
Operations or Other processed water, etc. locations, etc. treated by perimeter
Operations that use protection
Water
Carpentry and Wood, solvents, stains, Building construction Good Houskeeping
Framing debris practices
Concrete Materials Concrete Entire site Concrete Washout
and Concrete Waste
Management
Concrete Curing Curing compound Areas of concrete Good Housekeeping
construction practices
Demolition and Trash, sediment, various Existing building Good Housekeeping
Debris Disposal other contaminants areas ractices
Dewatering and Groundwater and Entire site Implementation of
Ponded Water ponded water containing dewatering plan if
Management various other pollutants encountered
Form Oil and Form oil Building construction Good Housekeeping
Concrete Forms practices
Generators Oil, Gasoline, etc. Entire site Storage under cover
within Existing
Parking Lot
Grading Operations Sediment Entire site Silt Fence,Vehicle
(Clearing, Tracking Pad, Street
Excavating, etc.) Sweeping, Dust
Control, Surface
Rou henin
Hazardous Waste Fire Retardant,Acid Building construction Good Housekeeping
Wash, Graffiti practices
Prevention Liquid,
Processed Water
HVAC Debris, Glue, etc. Building construction Good Housekeeping
practices
Insulation Fiberglass, other debris Building construction Good Housekeeping
practices
Landscape Products Fertilizers,herbicides, Entire site Application per
pesticides, fungicides, manufacturer's
etc. recommendations
Masonry Cement, grout, masonry Building construction Good Housekeeping
mixers, sand stockpiles, practices
etc.
Material Delivery Other materials Entire site Vehicle Tracking Pad
and Existing Parking
Lot
Painters Paint,primers, stains, Building construction Good Housekeeping
glue practices
Paving Operations Asphalt, tar, road base, Roadways and Contain and properly
lime parking areas dispose of excess
materials
Plumbing Trash, glue, solder Building construction Good Housekeeping
practices
Processed Water Any number of Entire site Optimize water use,
chemicals or other excess water shall be
toxins treated by perimeter
protection
Roofing Asphalt, wood, concrete Building construction Good Housekeeping
practices
Sanitary Waste Sanitary waste Building construction Good Housekeeping
Management and staging areas practices
Soil Stockpiling Sediment Entire site Vehicle Tracking Pad
Stucco, Plastering, Drywall,plaster, tool Building construction Good Housekeeping
Drywalling cleaning, etc. practices
Trash Debris,bacteria,various Building construction Good Housekeeping
chemicals, etc. and staging areas practices
Utility Excavations Sediment, fuel, oil Entire site Silt Fence for
sediment, Good
Housekeeping
practices for fuel, oil
Vehicle and Fuel, oil, grease, Entire site Good Housekeeping
Equipment chemicals, hydraulic oil practices
Maintenance,
Cleaning, or Leaks
Erosion Control Report
Liberty Common Junior High
APPENDIX C
SPILL PREVENTION
AND CONTROL PLAN
Elevation Consulting Page
21
SPILL PREVENTION AND CONTROL PLAN
SPILL PREVENTION and CONTROL PLAN
Whenever significant quantities of fuels, materials, vehicle fluids, or other pollutants are
to be used on site, specific procedures for material containment and spill prevention
shall be developed and implemented.
Introduction
The following Spill Prevention and Response Plan shall be implemented during the
construction of the Liberty Common Junior High. This plan will be implemented to meet
the requirements of the Colorado Department of Public Health and Environment Water
Quality Control Division.
Materials On-Site
Spill control procedures will be implemented when materials are stockpiled or when
chemicals and/or fluids are used in the construction area.
Stockpiles of Dry Materials
The following spill prevention procedures shall be implemented:
All materials shall be stockpiled in designated areas, with BMPs used to reduce and
minimize the runoff of contaminants. BMPs such as silt fence and sediment control logs
will be installed according to Colorado Department of Transportation criteria using the
details shown in the Stormwater Pollution Prevention plans. Loading and unloading
operations shall be performed in a manner to limit materials from being spilled. Any
spilled materials shall be swept up immediately after the operations are performed.
Vehicle Fueling
The following spill prevention procedures shall be implemented:
All vehicle fueling will be done off-site as much as possible. All on-site fueling
operations will be performed in designated areas. Measures will be taken where
necessary to reduce and minimize spills during vehicle fueling operations. These
measures may include the placement of a temporary berm around the fueling area,
covering the fueling area under a temporary portable structure, and/or the placement of
drip pans under valves and tank openings. Berms will be constructed around all fueling
areas. An adequate supply of absorbents will also be stockpiled at each fueling area.
Routine Vehicle and Equipment Maintenance
The following spill prevention procedures shall be implemented:
Page 1 of 7
All vehicle maintenance will be performed off-site when possible. However, there may
be occasions where construction equipment and vehicles may break down at the site
and on-site repairs are more feasible. On-site vehicle and equipment maintenance, if
needed, will be performed in designated areas, where practical, and enclosed by
earthen berms. All maintenance areas will maintain an adequate supply of drip pans.
These pans will be placed underneath vehicles as needed and absorbents will be used
in the event of a minor spill or leak.
SPILL RESPONSE
NOTE: IN CASE OF FIRE, EVACUATE ALL PERSONNEL FROM THE IMMEDIATE AREA,
RENDER FIRST AID TO ANYONE WHO IS INJURED, AND DIAL 911 IMMEDIATELY. TAKE
APPROPRIATE STEPS TO PROTECT HUMAN LIFE AND TO CONTROL FIRES FIRST.
SPILL CONTROL IS A SECONDARY CONCERN.
Cleanup and Removal Procedures
• Upon detection of any spill, the first action to be taken is to ensure personal safety. All
possible ignition sources, including running engines, electrical equipment (including
cellular telephones, etc.), or other hazards will be immediately turned off or removed
from the area. The extent of the spill and the nature of the spilled material will be
evaluated to determine if remedial actions could result in any health hazards, escalation
of the spill, or further damage that would intensify the problem. If such conditions exist,
a designated employee will oversee the area of the spill and the construction supervisor
will be notified immediately.
• The source of the spill will be identified and if possible the flow of pollutants stopped if
it can be done safely. However, no employee will attend to the source or begin cleanup
of the spill until ALL emergency priorities (fire, injuries, etc.) have been addressed.
Small Spills
Small spills (usually <5 gallons) consist of minor quantities of gasoline, oil, anti-freeze,
or other materials that can be cleaned up by a single employee using readily available
materials.
The following procedures shall be used for clean up of small spills:
1 . Ensure personal safety, evaluate the spill, and if possible, stop the flow of pollutants.
2. Contain the spread of the spill using absorbents, portable berms, sandbags, or other
available measures.
3. Spread absorbent materials on the area to soak up as much of the liquid as possible
and to prevent or minimize infiltration into the soil.
Page 2 of 7
4. Once the liquids have been absorbed, remove all absorbents from the spill and place
the materials in a suitable storage container. On paved areas, wipe any remaining
liquids from the surface and place the materials in a storage container.
Do not spray or wash down the area using water. For open soil areas, excavate any
contaminated soil as soon as possible and place the soil in a suitable storage container.
All materials will then be transported off-site for disposal.
5. If immediate transfer and storage of the contaminated soil is not practical, excavate
and place the contaminated soil on a double thickness sheet of 3-mil or higher
polyethylene film. In addition, a small berm should be formed around the outer edges of
the soil stockpile, underneath the polyethylene film, to ensure that contaminants are not
washed from the site during precipitation events and that materials do not seep through
the berm.
6. Record all significant facts and information about the spill, including the following:
• Type of pollutant
• Location
• Apparent source
• Estimated volume
• Time of discovery
• Actions taken to clean up spill
Medium to Large Spills
Medium to large spills consist of larger quantities of materials (usually >5 — 25 gallons)
that are used on site that cannot be controlled by a single employee. Generally, a
number of facility personnel will be needed to control the spill and a response may
require the suspension of other facility activities.
The following procedure shall be used for the cleanup of medium to large spills:
1 . Ensure personal safety, evaluate the spill, and if possible, stop the flow of pollutants.
2. Immediately dispatch a front-end loader or similar equipment to the spill and
construct a berm or berms down gradient of the spill to minimize the spread of potential
pollutants. On paved surfaces, portable berms, sandbags, booms, or other measures
will be used to control the lateral spread of the pollutants.
3. When the spread of the spill has been laterally contained, contact the supervisor or
designated facility employee and provide them information on the location, type, and
amount of spilled material, and a briefing on the extent of the spread and measures
undertaken to contain the contaminants.
4. Depending on the nature of the spill, mobilize additional resources as needed to
contain the contaminants.
Page 3 of 7
5. Cleanup will commence when the lateral spread has been contained and the
notification to the supervisor has been made.
6. Freestanding liquid will be bailed or pumped into 55-gallon storage drums, steel
tanks, or other suitable storage containers. When all the liquid has been removed from
the pavement or soil layer, absorbents will be applied to the surface and transferred to
the storage containers when they have soaked up as much of the spill as possible.
7. On paved surfaces, the remaining contaminants will be removed to the extent
possible, with rags, sweeping, or similar measures. The area of the spill will not be
sprayed or washed down using water. Any contaminant soaked materials will be placed
into the storage containers with the other absorbents.
8. The remaining contaminated soils will be excavated and loaded into a dump truck(s)
for disposal off-site at a designated facility. If transport off-site is not immediately
available, the remaining soils will be stockpiled on a double thickness sheet of 3-mil or
higher polyethylene film. In addition, a small berm will be formed around the outer
edges of the soil stockpile, underneath the polyethylene film, to ensure that
contaminants are not washed from the site during precipitation and do not seep through
the berm.
9. Record all significant facts and information about the spill, including the following:
• Type of pollutant
• Location
• Apparent source
• Estimated volume
• Time of discovery
• Actions taken to clean up spill
NOTIFICATION
Notification to the Colorado Department of Public Health & Environment (CDPHE) is
required if there is any release or suspected release of any substance, including oil or
other substances that spill into or threaten State waters. Unless otherwise noted,
notifications are to be made by the supervisor and only after emergency responses
related to the release have been implemented. This will prevent misinformation and
assures that notifications are properly conducted.
The notification requirements are as follows:
1 . Spills into/or Threatens State Waters: Immediate notification is required for
releases that occur beneath the surface of the land or impact or threaten waters of the
State of threaten the public health and welfare. Notifications that will be made are:
a. For any substance, regardless of quantity, contact CDPHE at 1-877-518-
5608. State as follows:
Page 4 of 7
a) Give you name.
b) Give location of spill (name of city).
c) Describe the nature of the spill, type of products, and estimate size of spill.
d) Describe type of action taken thus far, type of assistance or equipment
needed.
b. For any quantity of oil or other fluids, call the National Response Center at
1-800-424-8802. State as follows:
a) Give your name.
b) Give location of spill (name of city and state).
c) Describe the nature of the spill, type of product, and estimate size of spill.
d) Describe type of action taken thus far, type of assistance or equipment
needed.
2. Reportable Quantity Spill on Land Surface: Immediate notification is required of a
release upon the land surface of an oil in quantity that exceeds 25 gallons, or of a
hazardous substance that equals or exceeds 10 pounds or its reportable quantity under
Section 101(14) of the Comprehensive Environmental Response, Compensation
Liability Act (CERCLA) of 1980 as amended (40 CFR Part 302) and Section 329 (3) of
the Emergency Planning and Community Right to Know Act of 1986 (40 CFR Part 355)
whichever is less. This requirement does apply at a minimum to the substances listed in
Table A below.
TABLE A
Substances Requiring Notification
SUBSTANCE REPORTABLE QUANTITY
Motor Oil 25 Gallons
Hydraulic Oil 25 Gallons
Gasoline/Diesel Fuel 25 Gallons
The notification procedures to be followed are:
a) Give your name.
b) Give location of spill (name of city and state).
c) Describe nature of the spill, type of product, and estimate size of spill.
d) Describe type of action taken thus far, type of assistance or equipment
needed.
e) Give name of land owner
f) Specify department responsible for any facilities that may be impacted
3. Notification is not required for release of oil upon the land surface of 25 gallons or
less that will not constitute a threat to public health and welfare, the environmental or a
threat of entering the waters of the State.
4. Notification, as required in paragraphs 1 and 2 above, will be made to the
CDPHE using the 24-hour telephone number to report environmental spills. All
information known about the release at the time of discovery is to be included, such as
Page 5 of 7
the time of occurrence, quantity and type of material, location and any corrective or
clean-up actions presently being taken. Table B lists these phone numbers.
SPILL RESPONSE CONTACTS
TABLE B
Emergency Notification Contacts
Name/Agency Number
Fire Department 911
Police Department 911
Ambulance 911
Hospital 911
National Response Center 1-800-424-8802
CDPHE-Report Environmental Spills (24 hrs/day) 1-877-518-5608
Colorado Emergency Planning Committee 303-273-1622
It is the responsibility of the supervisor to contact the CDPHE, and/or the National
Response Center.
• The National Response Center is to be contacted when a release containing a
hazardous substance or oil in an amount equal to or in excess of a reportable quantity
established under either 40 CFR 110, 4- DFR 117, or 40 CFR 302 occurs during a 24-
hour period.
• Notification to the CDPHE is required if there is any release or suspected release of
any material, including oil or hazardous substances that spill into or threaten state
waters.
REPORTS
The CDPHE requires written notification of a spill or discharge of oil or other substance
that may cause pollution of the waters of the State of Colorado. A written report must be
submitted to the Water Quality Control District (WQCD) within five days after becoming
aware of the spill or discharge.
The CDPHE requires a written final report within 15 days for all releases of an oil or
hazardous substance that require implementation of a contingency plan. The CDPHE
may also require additional reports on the status of the clean up until any required
remedial action has been complete.
Written notification of reports must contain at a minimum:
1 . Date, time, and duration of the release.
Page 6 of 7
2. Location of the release.
3. Person or persons causing and responsible for the release.
4. Type and amount of oil or substance released.
5. Cause of the release.
6. Environmental damage caused by the release.
7. Actions taken to respond, contain, and clean up the release.
8. Location and method of ultimate disposal of the oil or other fluids.
9. Actions taken to prevent a reoccurrence of the release.
10. Any known or anticipated acute or chronic health risks associated with the
release.
11 . When appropriate advice regarding medical attention necessary for exposed
individuals.
Page 7 of 7
Erosion Control Report
Liberty Common Junior High
APPENDIX D
BMP INSTALLATION
AND REMOVE
SEQUENCE CHART
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Liberty Common Junior High Sequence
BMP as Initial Interim Final
Control BMP and Application Symbol Description Designed 1 2 3 4 5 6 7
Silt Fence SF intercept/filter sediment laden runoff I M M M R
Construction Fence CF Prevent public from accessing construction site I M M M M M R
Stockpile Management SP temporary storage of cut and import material X X X X
Vehcile Tracking Control VTC Minimize tracking of mud and sediment onto paved surfaces I M M M R
Concrete Washout Area CWA isolate concrete truck washout operations I M M R
Rock Sock RS intercept/filter sediment laden runoff within Street curb and gutter I M M M M M R
Inlet Protection IP 1prevent sediment from entering storm drainage system I M M M M M R
Create a series of grooves or furrows on the contour in disturbed,
graded areas to trap runoff and reduce the formation of rill and gully X X X X
Surface Roughing SR erosion. Also used to minimize sediment transport via wind
Provide soil protection through new plant growth(sod),plantings,
I,M
Sod/Landscape Stabilization LS trees,mulching(rock or wood mulch)
Dust Control N/A lPrivides minor detention of sediment X X I X X X X X X
Utilized to remove sediment on Public streets and to prevent
X X X X X X X X
Street Sweeping SS sediment from entering storm drainage system
X X X X X X X X
Good Housekeeping Practices N/A prevent pollution associated with solid,liquid and hazardous
Use Legend:I-Install,M-Maintain,R-Remove
Sequences:1-Pre-Disturbance&Site Access,2-Demolition,3-Grading and Excavation,4-Building Construction,5-Utility Construction and Paving,6-
Final Grading,7-Landscaping&Installtion of Final Stabilization Measures
Erosion Control Report
Liberty Common Junior High
APPENDIX E
INSPECTION REPORT
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COLORADO DEPARTMENT OF TRANSPORTATION
STORMWATER FIELD INSPECTION REPORT - ACTIVE CONSTRUCTION
(1)Project Name: (2)Project Contractor: 3)SWMP Administrator(Qualified Stormwater Manager)
Erosion Control Inspector:
(4)CDOT Project Engineer/CDOT Designee: (5)Other Attendee(s)(Name and Title):
(6)CDOT Project Number: (7)Project Code(Sub Account#): (8)CDPS-SCP (9)CDOT Region:
Certification#:
(10)Date of Project Inspection: (11)Weather at Time of Inspection:
(12) REASON FOR INSPECTION/EXCLUSION
❑ Routine Inspection: (A routine erosion control inspection shall be conducted at a minimum,once every 7 Calendar Days)
❑ Runoff Event: (Post-storm event inspections must be conducted within 24 hours after the end of any precipitation or snowmelt event that causes surface
erosion.If no construction activities will occur following a storm event,post-storm event inspections shall be conducted prior to re-commencing construction
activities, but no later than 72 hours following the storm event. The occurrence of any such delayed inspection must be documented in the inspection
record.) Routine inspections still must be conducted every 7 calendar days.
Storm Start Date: Approximate End Time of Storm(hrs):
❑Third Party Request:Winter Conditions Inspections Exclusion:Inspections are not required at sites where construction activities are temporarily
halted,snow cover exists over the entire site for an extended period, and melting conditions posing a risk of surface erosion do not exist. This
exception is applicable onl during the period where melting conditions do not exist,and applies to the routine 7-day inspections,as well as the post-
storm-event inspections. If visual inspection of the site verifies that all of these conditions are satisfied,document the conditions in section 17(General
Notes)and proceed to section 18(Inspection Certification). Documentation must include:dates when snow cover existed,date when construction activities
ceased,and date when melting conditions began.
❑ Other:
(13) SWMP MANAGEMENT
Yes I No N/A (g)Reason for N/A
(a) Is the SWMP located on site?
(b)Are changes to the SWMP documents noted and approved?
(c)Are the inspection reports retained in the SWMP?
(d)Are corrective actions from the last inspection completed?
(e) Is the Spill Response Plan updated in the SWMP?
(f) Is a list of potential pollutants updated in the SWMP? O
(14) CURRENT CONSTRUCTION ACTIVITIES
(a)Describe current phase of construction activities
(b)Estimate of disturbed area at the time of the inspection, use guidance found in 208.04 (e):
Acres Notes
Temporary Stabilization (includes areas of vertically tracked and/or surface
roughened temporary stabilizing surface treatments)+
Interim Stabilization (spray on soil tackifier such as organic mulch tackifier,
bonded fiber matrix,wood cellulose fiber with tackifier,etc.)+
Permanent Stabilization(includes areas of permanent seeding that have not
achieved 70%of re-disturbance vegetation levels)+
Other(Includes ground disturbing,clearing and grubbing,materials storage,
equipment staging,haul roads)+
Total acres of disturbance(includes cumulative total number of acres including:
temporary,interim ermanent stabilized and other
(c) Has the SWMP Phased Control Measure Implementation Matrix been updated? ❑ Yes ❑ No
Page 1 of 6 CDOT Form#1176 2/21
(15) CONSTRUCTION SiTE ASSESSMENT&CORRECTIVE ACTIONS *'Off-site Pollutant Discharges are a Violation of the Permit and Reason for Immediate Project Suspension**
The Construction Site Boundary/Limits of Construction (LOC), all disturbed areas, designated haul roads, material and/or waste storage areas that are exposed to precipitation,
discharge locations, and locations where vehicles exit the site shall be inspected for evidence of, or the potential for, pollutants leaving the LOC, entering the stormwater
drainage system, or discharging to State waters. if there is evidence of sediment or other pollutants discharging from the site, see section 16(Construction Site Assessment).
All erosion and sediment control practices identified in the SWMP shall be evaluated to ensure that they are maintained and operating correctly. identify the condition of the
control measure, using more than one letter if necessary:(I) Inadequate control measure; (M) Maintenance is needed; (A)Additional control measure is needed, (R) Remove
control measure. Keep copies of this blank page for additional room if needed.
Continuous maintenance is required on all control measures. As per CDPS-SCP: "Control measures that are not operating effectively, have proven to be inadequate, or
have failed must be addressed as soon as possible, immediately in most cases."
Location Control Condition Comments: Date
Measure Completed
Description of Corrective Action and Preventative Measure Taken &Initials
...................................... .................. ......................................................................................................... .............................................. --T
...........,................__.__..__.__..._............_..__.._.............................................._........................................_.. ..................................._.........___..............._..........---............_.__....._.........._............_.._........................
..__
... .
.............. -------------—---------------------- ...................I
..................... .............................................. .................. .........-.-........
...........I........................................................................
.....................--.............................................................................................................................................................................................................................................................................................................
--.11- 1.1-1.1.1-1....................... .........................
......................................--............ ........................................................................................................................ ................ ..........
......................................................................................-......................
................--------------.-...............................
.................................................................................................................................................................................................................................--......................................
Page 2 of 5 CDOT Form#1176 2/21
(16) CONSTRUCTION SITE ASSESSMENT "Off-site Pollutant Discharges are a Violation of the Permit and Reason for Immediate Project Suspension**
(a) Is there evidence of discharge of sediment or other pollutants from the site? ❑Yes CU No
*If yes, explain the discharge,the location and the associated corrective actions in section 15(Construction Site Assessment&Corrective Actions)or section 18(General Notes).
(b)Has sediment or other pollutants discharging from the site reached State waters? 0 Yes ❑ No
*If yes, see subsection 208.03(c)and Part I1.6 of the permit for reporting requirements.
(17) GENERAL NOTES
(18) INSPECTION CERTIFICATION
By signing this form, I certify that I attended the inspection in accordance with specification 208.03.
Contractor's SWMP Administrator(Qualified Stormwater Manager)
Print Name: Signature Required: Date:
Contractor's Erosion Control Inspector(If Needed):
Print Name: Signature(if needed) Date:
(19) COMPLIANCE CERTIFICATION
I verify that, to the best of my knowledge and belief, that if any corrective action items were identified during the inspection,those corrective actions are complete, and the site
is currently in compliance with the permit(Part I.A.3.f.i).
Contractor's SWMP Administrator/ECI
Print Name: Signature Required: Date
Contractor's Superintendent/Approved Designee
Print Name: Signature Required: Date:
CDOT Project Engineer/CDOT Designee
Print Name: Signature Required: Date:
Page 3 of 6 CDOT Form#1176 2/21
Stormwater Management Field Inspection Report Instructions
State waters are defined to be any and all surface and subsurface waters which are contained in or flow through the state,
including, streams, rivers, lakes, drainage ditches, storm drains, ground water, and wetlands, but not including waters in sewage
systems, waters in treatment works of disposal systems, waters in potable water distribution systems, and all water withdrawn for
use until use and treatment have been completed. (Per subsection 107.25 and 25-8-103 (19) CRS)
(3) SWMP Administrator(Qualified Stormwater Manager)and Erosion Control Inspector: Indicate the name(s)of
the individual responsible for implementing, maintaining and revising the SWMP. An Erosion Control Inspector(s)may
be the SWMP Administrator in projects with not more than 40 acres of disturbance (see 208.03(c)).
(4) CDOT Project Engineer/CDOT Designee: Indicate the name of the CDOT representative performing the inspection
with the SWMP Administrator/Erosion Control Inspector(s). This person should be the Project Engineer or an
authorized representative.
(9) CDPS-SCP Certification #: Indicate the Colorado Discharge Permit System (CDPS) Stormwater Construction Permit (SCP)
(for Stormwater Discharges Associated with Construction Activities) certification number, issued by CDPHE, for the project
which the report is being completed. Certification number can be found on the first page of the SCP.
(12) Reason(s)for Inspection /Exclusion: Indicate the purpose for the inspection or exclusion. These inspections are
required to comply with the CDOT Specifications and the CDPS-SCP.
❑Routine Inspections. These inspections are required at least every 7 calendar days during active construction.
Suspended projects require the 7 calendar day inspection unless snow cover exists over the entire site for an extended
period of time, and melting conditions do not exist(see, Winter Conditions Inspections Exclusions). 0 Runoff Event
Inspection for Active Sites. See page 1 for definition.
❑Third Party Request. Indicate the name of the third party requesting the inspection and, if known, the reason the request
was made.
❑Winter Conditions Inspections Exclusions. See page 1 for definition. An inspection does not need to be completed, but
use this form to document the conditions that meet the Exclusion. 0 Other. Specify any other reason(s)that resulted in
the inspection.
(13) SWMP Management: Review the SWMP records and documents and use a ./to answer the question. To comply with
CDOT Standard Specifications and the CDPS-SCP, all of the items identified must be adhered to. If No is checked,
indicate the necessary corrective action in section 15 (Construction Site Assessment& Corrective Actions). Specification
208.03(d).
a) A copy of the SWMP must be retained on site, unless another location (specified by the permit) is approved by the
Division.
b) Indicate all changes that have been made to any portion of the SWMP documents during construction. Changes shall
be dated and signed at the time of occurrence. Amendments may include items listed in subsection 208.03(d).
c) The SWMP Administrator shall keep a record of inspections. Inspection reports must identify any incidents of
noncompliance with the terms and conditions of the CDOT specifications or the CDPS-SCP. Inspection records must
be retained for three years from expiration or inactivation of permit coverage.
d) Are corrective actions from the last inspection completed? Is a description of the corrective action(s), the date(s)of
the corrective action(s), and the measure(s)taken to prevent future violations (including changes to the SWMP, as
necessary) documented?
e) Subsection 208.06(c) requires that a Spill Response Plan be developed and implemented to establish operating
procedures and that the necessary employee training be provided to minimize accidental releases of pollutants that
can contaminate stormwater runoff. Records of spills, leaks or overflows that result in the discharge of pollutants must
be documented and maintained. Information that should be recorded for all occurrences include the time and date,
weather conditions, reasons for spill, etc. Some spills may need to be reported to the Water Quality Control Division
immediately.
f) (f) Subsection 107.25(b)6 requires the Erosion Control Supervisor to identify and describe all potential pollutant
sources, including materials and activities, and evaluate them for the potential to contribute pollutants to stormwater
discharge.
g) (g) If N/A is checked for any of the items (a)through (f), indicate why in the space provided, if additional space is
needed indicate in section 17 (General Notes).
Page 4 of 6 CDOT Form#1176 2/21
Stormwater Management Field Inspection Report Instructions (continued)
(14) Current Construction Activities:
a) Provide a short description of the current construction activities/phase at the project site; include summary of grading
activities, installation of utilities, paving, excavation, landscaping, etc.
(i) Estimate of disturbed area at the time of the inspection, use guidance found in 208.04 (e). Estimate the acres of
disturbed area at the time of the inspection. Include clearing, grading, excavation activities, areas receiving overburden
(e.g. stockpiles), demolition areas and areas with heavy equipment/vehicle traffic, installation of new or improved haul
roads and access roads, staging areas, borrow areas and storage that will disturb existing vegetative cover, (Areas that
have been: hard armored or paved should not be counted for total disturbance).
b) Has the Phased control measure Implementation Matrix on the SWMP been updated? As part of the inspection the
Phased control measure Implementation matrix for both the structural and non-structural control measures found at
the beginning of the SWMP sheets must be reviewed to ensure that"in use on site"box is checked for control
measures currently in use at the time of the inspection.
(15) Construction Site Assessment & Corrective Actions: Inspect the construction site and indicate where control measure
feature(s) identified in section 13 (SWMP Management), require corrective action. Erosion and sediment control practices
identified in the SWMP shall be evaluated to ensure that they are operating correctly.
• Condition. Identify the condition of the control measure, using more than one letter(identified in section 15)if necessary.
• Location. Site location (e.g., project station number, mile marker, intersection quadrant, etc.).
• Control measure. Indicate the type of control measure at this location that requires corrective action (e.g., silt fence,
erosion logs, soil retention blankets, etc.).
• Date Completed & Initials. Date and initial when the corrective action was completed and the preventative measure
statement finished.
• Description of Corrective Action and Preventative Measure Taken. Provide the proposed corrective action needed to bring
the area or control measure into compliance. Once corrective actions are completed, state the measures taken to prevent
future violations and ensure that the control measures are operating correctly, including the required changes made to the
• SWMP.
Inadequate control measure: is any control measure that is not designed or implemented in accordance with the
requirements of the permit and/or any control measure that is not implemented to operate in accordance with its design, this
includes control measures that have not been implemented for pollution sources. If it is infeasible to install or repair the
control measure immediately after discovering the deficiency the reason must be documented and a schedule included to
return the control measure to effective operating condition as soon as possible.
Control measures requiring routine maintenance: Any control measure that is still operating in accordance with its
design and the requirements of the permit, but requires maintenance to prevent a breach of the control measure. These
items are not subject to the corrective action requirements as specified in Part I.b.1.c of the permit.
Additional: Any control measure inadequate for its application or an area with insufficient control measure(s). If it is
infeasible to install revised or additional control measure(s) immediately after discovering the deficiency the reason must be
documented and a schedule included to return the control measure to effective operating condition as soon as possible.
Remove: Control measure no longer necessary
(16)Construction Site Assessment: Was there any off site discharge of sediment at this site since the last inspection?
a) Is there evidence of discharge of sediment or other pollutants from the site? Off-site pollutant discharges are a
violation of the permit. (The construction site perimeter, all disturbed areas, material and/or waste storage areas that
are exposed to precipitation, discharge locations, and locations where vehicles access the site shall be inspected for
evidence of, or the potential for, pollutants leaving the construction site boundaries, entering the stormwater drainage
system).
b) Are pollutants discharging to State water?
c) Has sediment or other pollutants discharging from the site reached State waters? Off-site pollutant discharges are a
violation of the permit. If off site discharge has occurred, explain the discharge and the corrective actions in section
15 (Construction Site Assessment& Corrective Actions)or section 17 (General Notes).
Page 5 of 6 CDOT Form#1176 2/21
(17) General Notes: Indicate any additional notes that add detail to the inspection; this may include positive practices noted on
the project.
(18) Inspection Certification: In accordance with 208.03, required personnel shall sign to verify that they were in attendance.
(19) Compliance Certification: After all corrections have been made, this signature must be completed in accordance with Part
I.A.3.f of the CDPS-SCP.
Page 6 of 6 MOT Form#1176 2/21
Erosion Control Report
Liberty Common Junior High
APPENDIX F
SWMP PLANS AND
DETAILS
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FORT COLLINS STANDARD EROSION CONTROL NOTES: 29. ALL EXPOSED DIRT SHALL HAVE PERIMETER CONTROL. ANY PERIMETER CONTROLS THAT DRAIN OFF OR HAS THE ABILITY TO BE TRACKED BE SWEPT AND SCRAPED OF ALL MATERIAL AND SHALL HAVE PROPER AND LEGAL DISPOSAL.
op L9
ONTO THE NEARBY HARDSCAPE SHALL HAVE SOME FORM OF EFFECTIVE SEDIMENT CONTROL AS THE, OR AS PART OF THE, PERIMETER CONTROL. 0 :r
WASTE MATERIALS STORAGE AND SANITARY FACILITIES 7Z THESE NOTES ARE A SUMMARY FOR THE LEGAL REQUIREMENTS, THAT ARE SET FORTH IN THE FORT COLLINS STORMWATER CRITERIA MANUAL a
(FCSCM), AND THAT ANY CONFLICT IS RESOLVED BY THE MORE STRINGENT REQUIREMENT CONTROLLING. 30. ALL EXPOSED SLOPES SHOULD BE PROTECTED. ALL EXPOSED STEEP SLOPES (STEEPER THAN 3:1 H:V) SHALL BE PROTECTED FROM EROSION AND SEDIMENT TRANSPORT THROUGH USE OF CONTROL MEASURES. 46. TRASH, DEBRIS, MATERIAL SALVAGE, AND/OR RECYCLING AREAS SHALL BE, WHERE PRACTICAL, AT LEAST FIFTY (50) FEET FROM ANY o
� LL
PERMANENT OR INTERIM STORMWATER STRUCTURES OR DRAINAGE WAYS AND SHALL BE MONITORED AS PART OF THE ROUTINE INSPECTIONS. THESE U
1. THE PROPERTY OWNER, OWNERS REPRESENTATIVE, DEVELOPER, DESIGN ENGINEER, GENERAL CONTRACTOR, SUB-CONTRACTORS, OR SIMILAR 31. NO SOILS SHALL REMAIN EXPOSED BY LAND DISTURBING ACTIVITY FOR MORE THAN THIRTY (30) DAYS AFTER ACTIVITY HAS CEASED BEFORE FACILITIES SHOULD BE LOCATED OUT OF THE WIND AND COVERED AS ABLE. WHERE NOT ABLE TO COVER, LOCATING SAID AREAS ON THE SIDE OF
TITLE FOR THE DEVELOPING ENTITY (HERE AFTER REFERRED TO AS THE DEVELOPER) HAS PROVIDED THESE EROSION CONTROL MATERIALS IN REQUIRED TEMPORARY SEEDING OR PERMANENT EROSION CONTROL (E.G. SEED/MULCH, LANDSCAPING, ETC.) IS INSTALLED. THIS IS NOT JUST LIMITED OTHER STRUCTURES TO REDUCE EXPOSURE TO WINDS, AND FOLLOW MAXIMUM LOADING GUIDELINES AS MARKED ON THE CONTAINER. THE DEVELOPER
ACCORDANCE WITH EROSION CONTROL CRITERIA SET FORTH IN THE MANUAL AS AN ATTEMPT TO IDENTIFY EROSION, SEDIMENT, AND OTHER TO PROJECTS THAT ARE ABANDONED; THIS INCLUDES ANY PROJECT THAT IS TEMPORARILY HALTED AND NO IMMEDIATE ACTIVITY IS TO RESUME IS REQUIRED TO PRACTICE GOOD HOUSEKEEPING TO KEEP THE CONSTRUCTION SITE FREE OF LITTER, CONSTRUCTION DEBRIS, AND LEAKING
POTENTIAL POLLUTANT SOURCES ASSOCIATED WITH THESE CONSTRUCTION ACTIVITIES AND PREVENTING THOSE POLLUTANTS FROM LEAVING THE WITHIN THE NEXT THIRTY (30) DAYS, UNLESS OTHERWISE APPROVED BY THE CITY EROSION CONTROL INSPECTOR. DURING A SEASON WHEN SEEDING CONTAINERS.
PROJECT SITE AS AN ILLICIT DISCHARGE. FULL CITY REQUIREMENTS AND ARE OUTLINED AND CLARIFIED IN THE MANUAL UNDER CHAPTER 4:
DOES NOT PRODUCE VEGETATIVE COVER, ANOTHER TEMPORARY EROSION CONTROL SHALL BE IMPLEMENTED WITH OR UNTIL TEMPORARY SEEDING OR 47. SANITARY FACILITIES SHALL BE PREVENTED FROM TIPPING THROUGH THE USE OF ANCHORING TO THE GROUND OR LASHING TO A STABILIZED Uj
L
CONSTRUCTION CONTROL MEASURES AND SHOULD BE USED TO IDENTIFY AND DEFINE WHAT IS NEEDED ON A PROJECT. PERMANENT EROSION CONTROL CAN BE PERFORMED. STRUCTURE. THESE FACILITIES SHALL ALSO BE LOCATED AS FAR AS PRACTICAL FROM AN INLET, CURB CUT, DRAINAGE SWALE OR OTHER DRAINAGE o NLo
N
2. THE DEVELOPER SHALL MAKE THEMSELVES THOROUGHLY FAMILIAR WITH THE PROVISIONS AND THE CONTENT OF THE SPECIFICATIONS LAID OUT 32. ALL INDIVIDUAL LOTS SHALL HAVE EFFECTIVE SEDIMENT CONTROLS LOCATED ON THE STREET SIDE AND ANY DOWN GRADIENT SIDE. TYPICALLY CONVEYANCES TO PREVENT MATERIAL TRANSPORT FROM LEAVING THE LOCAL AREA. THIS CONSISTS OF THE FACILITY BEING LOCATED, WHERE T oo
PRACTICAL
IN THE MANUAL, THE DEVELOPMENT AGREEMENT, THE EROSION CONTROL MATERIALS C MOST LOTS DRAIN TO THE FRONT YET ON THOSE CASES WHERE HOUSES ARE ALONG A POND OR DRAINAGE SWALE HAVE THE LOT DRAIN IN A , AT LEAST FIFTY (50) FEET FROM ANY PERMANENT OR INTERIM DRAINAGE WAYS. = o
oo
3. OMPILED FOR THIS PROJECT, AND THE FOLLOWING NOTES AS ALL THESE MATERIALS ARE APPLICABLE TO THIS PROJECT. DIFFERENT DIRECTION THAN THE STREET, THOSE INDIVIDUAL LOTS WILL NEED PROTECTION ON THAT DOWN GRADIENT SIDE TO PREVENT SEDIMENT OTHER SITE OPERATIONS AND POTENTIAL SPILL AREAS
FROM LEAVING THE LOT. SEE THE INDIVIDUAL LOT DETAILS FOR FURTHER CLARIFICATION. m
4. THE DEVELOPER SHALL IMPLEMENT AND MAINTAIN CONTROL MEASURES FOR ALL POTENTIAL POLLUTANTS FROM THE START OF LAND 48. SPILLS: FOR THOSE MINOR SPILLS THAT; ARE LESS THAN THE STATES REPORTABLE QUANTITY FOR SPILLS, STAY WITHIN THE PERMITTED M
DISTURBING ACTIVITIES UNTIL FINAL STABILIZATION OF THE CONSTRUCTION SITE. VEHICLE TRACKING AREA, AND IN NO WAY THREATEN ANY STORMWATER CONVEYANCE, NOTIFY THE CITY OF FORT COLLINS UTILITIES BY EMAIL AT EROSION@FCGOV.COM 7Z <
5. THE CITY EROSION CONTROL INSPECTOR SHALL BE NOTIFIED AT LEAST TWENTY-FOUR (24) HOURS PRIOR TO THE DESIRED START OF ANY 33. AT ALL POINTS WHERE VEHICLES EXIT OR LEAVE THE EXPOSED DIRT AREA ON TO A HARDSCAPE OR SEMI HARDSCAPE (CONCRETE, ASPHALT, OR PHONE (970) 817-4770. FOR ANY SIGNIFICANT, MAJOR, OR HAZARDOUS SPILLS, NOTIFY THE CITY OF FORT COLLINS UTILITIES BY PHONE ONLY
CONSTRUCTION ACTIVITIES ON THIS SITE TO ALLOW ADEQUATE TIME FOR ON-SITE CONFIRMATION (INITIAL INSPECTION WHICH CAN TAKE UP TO TWO ROAD BASE, ETC.) SHALL HAVE INSTALLED AT LEAST ONE STRUCTURAL TRACKING CONTROL MEASURE TO PREVENT VEHICLE TRACKING. ALL AREAS AFTER EMERGENCY RESPONSE (911) HAS BEEN NOTIFIED AND IS ON ROUTE, COUNTY HEALTH DEPARTMENT (LCDHE) HAS BEEN NOTIFIED THROUGH
BUSINESS DAYS AFTER RECEIVING THE REQUEST) THAT THE SITE IS IN FACT PROTECTED FROM SEDIMENT AND POLLUTANTS DISCHARGES OFF SITE. NOT PROTECTED BY AN ADEQUATE PERIMETER CONTROL SHALL BE CONSIDERED A POINT WHERE VEHICLES EXIT THE SITE. ACCESS POINTS SHOULD LARIMER COUNTY SHERIFF DISPATCH (970) 416-1985, AND THE STATE SPILL HOTLINE INCIDENT REPORTING HAVE BEEN CONTACTED
PLEASE CONTACT EROSION@FCGOV.COM EARLY TO SCHEDULE THOSE INITIAL EROSION CONTROL INSPECTIONS WELL IN ADVANCE SO THAT DEMOLITION, BE LIMITED TO AS FEW ENTRANCES AS POSSIBLE (ALL PERIMETER AREAS SHALL BE PROTECTED FROM TRACKING ACTIVITIES). 1-877-518-5608. WRITTEN DOCUMENTATION SHALL BE PROVIDED TO THE CITY WITHIN 5 DAYS OF THE EVENT. ALL SPILLS SHALL BE CLEANED UP E I e v a t i o n
CLEARING, GRUBBING, TREE REMOVAL, AND SCRAPING MAY BEGIN WITHOUT DELAY. FAILURE TO RECEIVE AN ON-SITE CONFIRMATION BEFORE 34. IN ALL AREAS THAT THE STRUCTURAL TRACKING CONTROL MEASURES FAIL TO PREVENT VEHICLE TRACKING, COLLECTION AND PROPER IMMEDIATELY. Consulting
CONSTRUCTION ACTIVITIES COMMENCE IS AN AUTOMATIC `NOTICE OF VIOLATION"AND CAN RESULT IN FURTHER ENFORCEMENT ACTIONS. DISPOSAL OF THAT MATERIAL IS REQUIRED. ALL INLETS LOCATED NEAR ACCESS POINTS AND AFFECTED BY TRACKING ACTIVITIES SHALL BE 49. SELECTION OF `PLASTIC WELDED"EROSION CONTROL BLANKETS SHALL NOT BE USED IN AREAS THAT WILDLIFE, SUCH AS SNAKES, ARE LIKELY
6. THE DEVELOPER SHALL PROACTIVELY PROVIDE ALL APPROPRIATE CONTROL MEASURES TO PREVENT DAMAGE TO ADJACENT DOWNSTREAM AND PREVENTED FROM THE INTRODUCTION OF SEDIMENT INTO THE DRAINAGE SYSTEM. TO BE LOCATED AS THESE HAVE PROVEN TO CAUSE ENTRAPMENT ISSUES.
LEEWARD PROPERTIES. THIS INCLUDES BUT IS NOT LIMITED TO: TREES, SHRUBS, LAWNS, WALKS, PAVEMENTS, ROADWAYS, STRUCTURES, CREEKS, 35. CITY MUNICIPAL CODE §20-62, AMONG OTHER THINGS, PROHIBITS THE TRACKING, DROPPING, OR DEPOSITING OF SOILS OR ANY OTHER FINAL STABILIZATION AND PROJECT COMPLETION
WETLANDS, STREAMS, RIVERS, AND UTILITIES THAT ARE NOT DESIGNED FOR REMOVAL, RELOCATION, OR REPLACEMENT IN THE COURSE OF MATERIAL ONTO CITY STREETS BY OR FROM ANY SOURCE. CITY MUNICIPAL CODE, §26-498, AMONG OTHER THINGS, PROHIBITS THE DISCHARGE OF 50. ANY STORMWATER FACILITIES USED AS A TEMPORARY CONTROL MEASURE WILL BE RESTORED AND STORM SEWER LINES WILL BE CLEANED
CONSTRUCTION. POLLUTANTS ON PUBLIC OR PRIVATE PROPERTY IF THERE IS A SIGNIFICANT POTENTIAL FOR MIGRATION OF SUCH POLLUTANT. THEREFORE, ALL UPON COMPLETION OF THE PROJECT AND BEFORE TURNING THE MAINTENANCE OVER TO THE OWNER, HOMEOWNERS ASSOCIATION (HOA), OR OTHER
7. AT ALL TIMES THE DEVELOPER SHALL BE RESPONSIBLE TO ENSURE ADEQUATE CONTROL MEASURES ARE DESIGNED, SELECTED, INSTALLED, TRACKED OR DEPOSITED MATERIALS (INTENTIONAL OR INADVERTENT) ARE NOT PERMITTED TO REMAIN ON THE STREET OR GUTTER AND SHALL BE PARTY RESPONSIBLE FOR LONG TERM MAINTENANCE OF THOSE FACILITY.
MAINTAIN, REPAIRED, REPLACED, AND ULTIMATELY REMOVED IN ORDER TO PREVENT AND CONTROL EROSION SUSPENSION, SEDIMENT REMOVED AND LEGALLY DISPOSED OF BY THE DEVELOPER IN A TIMELY AND IMMEDIATE MANNER. DIRT RAMPS INSTALLED IN THE CURB-LINES ARE 51. ALL FINAL STABILIZATION SPECIFICATIONS SHALL BE DONE IN ACCORDANCE WITH THE MANUAL, CHAPTER 4: CONSTRUCTION CONTROL
TRANSPORTATION, AND POLLUTANT DISCHARGE AS A RESULT OF CONSTRUCTION ACTIVITIES ASSOCIATED WITH THIS PROJECT. NOT EXEMPT TO THESE SECTIONS OF CODE AND SHALL NOT BE PERMITTED IN THE STREET RIGHT OF WAY (PUBLIC OR PRIVATE). MEASURES.
8. ALL APPLICABLE CONTROL MEASURES BASED UPON THE SEQUENCING AND/OR PHASING OF THE PROJECT SHALL BE INSTALLED PRIOR TO 36. IF REPEATED DEPOSIT OF MATERIAL OCCURS ON A SITE, ADDITIONAL STRUCTURAL TRACKING CONTROLS MAY BE REQUIRED OF THE DEVELOPER 52. ALL DISTURBED AREAS DESIGNED TO BE VEGETATED SHALL BE AMENDED, SEEDED & MULCHED, OR LANDSCAPED AS SPECIFIED IN THE
THOSE CONSTRUCTION ACTIVITIES COMMENCING. BY THE CITY EROSION CONTROL INSPECTOR. LANDSCAPE PLANS WITHIN 14 WORKING DAYS OF FINAL GRADING.
9. AS DYNAMIC CONDITIONS (DUE TO THE NATURE, TIMING, SEQUENCE, AND PHASING OF CONSTRUCTION) IN THE FIELD MAY WARRANT CONTROL LOADING AND UNLOADING OPERATIONS 53. SOIL IN ALL VEGETATED (LANDSCAPED OR SEEDED) AREAS, INCLUDING PARKWAYS AND MEDIANS SHALL COMPLY WITH ALL REQUIREMENTS SET
MEASURES IN ADDITION, OR DIFFERENT, TO WHAT IS SHOWN ON THESE PLANS, THE DEVELOPER SHALL AT ALL TIMES BE RESPONSIBLE TO FORTH IN SECTIONS 12-130 THROUGH 12-132 OF THE CITY MUNICIPAL CODE, AS WELL AS SECTION 3.8.21 FOR THE CITY LAND USE CODE. I Ln
IMPLEMENT THE CONTROL MEASURES THAT ARE MOST EFFECTIVE WITH THE CURRENT STATE AND PROGRESS OF CONSTRUCTION. THE DEVELOPER 37. THE DEVELOPER SHALL APPLY CONTROL MEASURE TO LIMIT TRAFFIC (SITE WORKER OR PUBLIC) IMPACTS AND PROACTIVELY LOCATE MATERIAL N
SHALL IMPLEMENT WHATEVER MEASURES ARE DETERMINED NECESSARY, AND/OR AS DIRECTED BY THE CITY EROSION CONTROL INSPECTOR. THE DELIVERED TO THE SITE IN CLOSE PROXIMITY TO THE WORK AREA OR IMMEDIATELY INCORPORATED IN THE CONSTRUCTION TO LIMIT OPERATIONAL 54. ALL SEEDING SHALL REFER TO LANDSCAPING PLANS FOR SPECIES MIXTURE AND APPLICATION RATES AND DEPTHS REQUIREMENTS.
DEVELOPER SHALL INSURE THAT ALL EROSION CONTROL PLANS (MAPS) OR SWMP DOCUMENTS ARE UPDATED TO REFLECT THE CURRENT SITE IMPACTS TO DISTURBED AREAS, VEHICLE TRACKING, AND SEDIMENT DEPOSITION THAT COULD IMPACT WATER QUALITY. OUTDOOR STORAGE OR Ln
CONSTRUCTION SITE MATERIALS, BUILDING MATERIALS, FERTILIZERS, AND CHEMICALS 0
55. ALL SEED SHALL BE DRILLED WHERE PRACTICAL TO A DEPTH BASED UPON THE SEED TYPE. BROADCAST SEEDING SHALL BE APPLIED AT
CONDITIONS, WITH UPDATES BEING INITIALED AND DATED. THESE SITE INSPECTIONS AND SITE CONDITION UPDATES SHALL BE MADE AVAILABLE UPON DOUBLE THE RATE AS PRESCRIBED FOR DRILL SEEDING AND SHALL BE LIGHTLY HAND RAKED AFTER APPLICATION. HYDROSEEDING MAY BE
00
REQUEST BY THE CITY. 38. ANY MATERIALS OF A NON-POLLUTING NATURE (STEEL, ROCK, BRICK, LUMBER, ETC.) SHALL BE INSPECTED FOR ANY RESIDUE COMING OFF SUBSTITUTED FOR DRILL SEEDING ON SLOPES STEEPER THAN 3(H):1(V) OR ON OTHER AREAS NOT PRACTICAL TO DRILL SEED AND CRIMP AND
10. ALL LISTINGS, PROVISIONS, MATERIALS, PROCEDURES, ACTIVITIES, SITE WORK AND THE LIKE ARTICULATED IN THIS OR OTHER WRITTEN THE MATERIAL DURING ROUTINE INSPECTION AND WILL GENERALLY BE LOCATED WHERE PRACTICAL AT LEAST FIFTY (50) FEET FROM ANY MULCH. ALL HYDROSEEDING MUST BE CONDUCTED AS TWO SEPARATE PROCESSES OF SEEDING AND TACKIFICATION. O
SITE-SPECIFIC DOCUMENTS (INCLUDING BUT NOT LIMITED TO THE EROSION CONTROL REPORTS, DEVELOPMENT AGREEMENTS, LANDSCAPE, AND PERMANENT OR INTERIM DRAINAGE WAYS. 56. ALL SEEDED AREAS MUST BE MULCHED WITHIN TWENTY-FOUR (24) AFTER PLANTING. ALL MULCH SHALL BE MECHANICALLY CRIMPED AND OR = U
DRAINAGE MATERIALS) SHALL MEET OR EXCEED THE MOST RESTRICTIVE LANGUAGE FOR CITY, COUNTY, STATE, AND FEDERAL REGULATIONS WITH 39. ANY HIGH ENVIRONMENTAL IMPACT POLLUTANT MATERIALS THAT HAVE A HIGH LIKELIHOOD TO RESULT IN DISCHARGE WHEN IN CONTACT WITH ADEQUATELY APPLIED TACKIFIER. THE USE OF CRIMPED MULCH OR TACKIFIER MAY REQUIRE MULTIPLE RE-APPLICATIONS IF NOT PROPERLY
REGARDS TO EROSION, SEDIMENT, POLLUTANT, AND OTHER POLLUTION SOURCE CONTROL MEASURES. THE DEVELOPER SHALL BE RESPONSIBLE TO STORMWATER (LUBRICANTS, FUELS, PAINTS, SOLVENTS, DETERGENTS, FERTILIZERS, CHEMICAL SPRAYS, BAGS OF CEMENT MIX, ETC.) SHOULD NOT BE INSTALLED OR HAVE WEATHERED OR DEGRADED BEFORE VEGETATION HAS BEEN ESTABLISHED. AREAS OF EMBANKMENTS HAVING SLOPES GREATER
COMPLY WITH ALL OF THESE AFOREMENTIONED LAWS AND REGULATIONS. KEPT ON SITE WHERE PRACTICAL. WHEN NOT PRACTICAL, THEY SHOULD BE STORED INSIDE (VEHICLE, TRAILER, CONNEX, BUILDING, ETC.) AND OUT THAN OR EQUAL TO 3H:1V SHALL BE STABILIZED WITH AN EROSION MAT OR APPROVED EQUAL TO ENSURE SEED WILL BE ABLE TO GERMINATE ON U)
OF CONTACT WITH STORMWATER OR STORMWATER RUNOFF. WHERE NOT AVAILABLE, THEY SHALL BE STORED OUTSIDE IN A RAISED HIGH SPOTS OR THE STEEP SLOPES. DURING A SEASON WHEN SEEDING DOES NOT PRODUCE VEGETATIVE COVER, ANOTHER TEMPORARY EROSION CONTROL SHALL BE z
11. THE DEVELOPER SHALL ENSURE THAT ALL APPROPRIATE PERMITS (CDPS GENERAL PERMIT STORMWATER DISCHARGES ASSOCIATED WITH ( IMPLEMENTED ALONG WITH, OR UNTIL, TEMPORARY SEEDING OR PERMANENT EROSION CONTROL CAN BE PERFORMED.
CONSTRUCTION ACTIVITY, DEWAIERING, CLEAN WATER ACT, ARMY CORPS OF ENGINEERS'404 WETLANDS MITIGATION PERMIT, ETC.) HAVE BEEN ON PALLETS), COVERED (PLASTIC OR TARPED), AND SEALED (LEAK PROOF CONTAINER) IN SECONDARY CONTAINMENT LOCATION. THE SECONDARY J
ATTAINED PRIOR TO THE RELEVANT ACTIVITY HAS BEGUN. THESE PERMITS OR COPIES SHALL BE MADE AVAILABLE UPON REQUEST BY THE CITY. CONTAINMENT OR OTHER CONTROL MEASURE SHALL BE ADEQUATELY SIZED, LOCATED, WHERE PRACTICAL, AT LEAST FIFTY (50) FEET FROM ANY 57. THE DEVELOPER SHALL WARRANTY AND MAINTAIN ALL VEGETATIVE MEASURES FOR TWO GROWING SEASONS AFTER INSTALLATION OR UNTIL �
PERMANENT OR INTERIM STORMWATER STRUCTURES OR DRAINAGE WAYS AND SHALL BE MONITORED AS PART OF THE ROUTINE INSPECTIONS. SEVENTY PERCENT (707) VEGETATIVE COVER HAS BEEN ESTABLISHED, WHICHEVER IS LONGER AND MEETS ALL THE CRITERIA OUTLINED IN THE FORT � 0
12. THE DEVELOPER SHALL FURNISH ALL CONVENIENCES AND ASSISTANCES TO AID THE EROSION CONTROL INSPECTORS OF MATERIALS, COLLINS STORMWATER CRITERIA MANUAL CHAPTER 4: CONSTRUCTION CONTROL MEASURES.
WORKMANSHIP, RECORDS, AND SELF-INSPECTIONS, ETC. OF THE CONTROL MEASURES INVOLVED IN THE CONSTRUCTION ACTIVITIES. VEHICLE AND EQUIPMENT MAINTENANCE AND FUELING
40. PARKING, REFUELING, AND MAINTENANCE OF VEHICLES AND EQUIPMENT SHOULD BE LIMITED IN ONE AREA OF THE SITE TO MINIMIZE POSSIBLE 58. THE DEVELOPER SHALL MAINTAIN, MONITOR, REPAIR, AND REPLACE ANY AND ALL APPLICABLE CONTROL MEASURES UNTIL FINAL STABILIZATION � U
13. THE DEVELOPER SHALL REQUEST CLARIFICATION OF ALL APPARENT SITE CONSTRUCTION ISSUES THAT MAY ARISE DUE TO INCONSISTENCIES IN HAS BEEN OBTAINED. ALL CONTROL MEASURES MUST REMAIN UNTIL SUCH TIME AS ALL UPSTREAM CONTRIBUTING POLLUTANT SOURCES HAVE BEEN
CONSTRUCTION PLANS FOR THE SITE OR SITE CONDITIONS AROUND THE SELECTED CONTROL MEASURES BY CONTACTING THE EROSION CONTROL SPILLS AND FUEL STORAGE AREAS. THIS AREA SHALL BE LOCATED, WHERE PRACTICAL, AT LEAST FIFTY (50) FEET FROM ANY PERMANENT OR VEGETATED OR REMOVED FROM THE SITE. WHEN ANY CONTROL MEASURE IS REMOVED, THE DEVELOPER SHALL BE RESPONSIBLE FOR THE CLEANUP
INSPECTOR. THE EROSION CONTROL INSPECTOR WILL NOT BE RESPONSIBLE FOR ANY EXPLANATIONS, INTERPRETATIONS, OR SUPPLEMENTARY DATA INTERIM STORMWATER STRUCTURES OR DRAINAGE WAYS AND SHALL BE MONITORED AS PART OF THE ROUTINE INSPECTIONS. ALL AREAS SHALL AND REMOVAL OF ALL SEDIMENT AND DEBRIS FROM THAT CONTROL MEASURE. AT THE POINT AT WHICH THE SITE HAS BEEN DEEMED STABILIZED
PROVIDED BY OTHERS. KEEP SPILL KITS AND SUPPLIES CLOSE. AND VERIFIED BY CITY EROSION CONTROL INSPECTOR, ALL TEMPORARY CONTROL MEASURES CAN THEN BE FULLY REMOVED. ALL MEASURES SHALL O
14. ALL CONTROL MEASURES SHALL BE INSTALLED IN ACCORDANCE WITH THE MANUAL. SIGNIFICANT DUST OR PARTICULATE GENERATING PROCESS BE REMOVED WITHIN 30 DAYS AFTER FINAL STABILIZATION IS ACHIEVED. LL
15. THE CITY RESERVES THE RIGHT TO REQUIRE ADDITIONAL CONTROL MEASURES AS SITE CONDITIONS WARRANT, TO THE EXTENT AUTHORIZED BY 41. THE PROPERTY MUST BE ACTIVELY PREVENTING THE EMISSION OF FUGITIVE DUST AT ALL TIMES DURING CONSTRUCTION AND VEGETATION 59. THE RESPONSIBLE PARTY SHALL MAINTAIN AND KEEP CURRENT ALL PAYMENTS OR RELATED FORMS OF SECURITY FOR THE EROSION CONTROL
O O
RELEVANT LEGAL AUTHORITY. ACTIVITIES. ALL LAND DISTURBING ACTIVITIES THAT RESULT IN FUGITIVE DUST SHALL BE IN ACCORDANCE WITH MUNICIPAL CODE §12-150 TO ESCROW UNTIL 1) STABILIZATION HAS BEEN REACHED AND 2) ALL CONTROL MEASURES AND/OR BMPS HAVE SEDIMENT MATERIALS COLLECTED AND
16. AS WITH ANY CONSTRUCTION STANDARDS, OCCASIONS MAY ARISE WHERE THE MINIMUM EROSION CONTROL STANDARDS ARE EITHER REDUCE THE IMPACTS TO ADJACENT PROPERTIES AND COMMUNITY HEALTH. ALL REQUIRED PRACTICES SHALL BE IMPLEMENTED AND ADDITIONAL THE CONTROL MEASURE REMOVED FROM THE SITE. AT THAT TIME THE SITE WILL BE CONSIDERED COMPLETED AND ANY REMAINING EROSION 0
INAPPROPRIATE OR CANNOT BE JUSTIFIED. IN THESE CASES, A VARIANCE TO THESE STANDARDS MAY BE APPLIED FOR PURSUANT TO THE TERMS, ONES SHALL BE FOLLOWED. THESE PRACTICES INCLUDE WATERING THE SITES AND DISCONTINUING CONSTRUCTION ACTIVITIES UNTIL THE WIND CONTROL ESCROW SHALL BE RETURNED TO THE APPROPRIATE PARTIES.
CONDITIONS, AND PROCEDURES OF THE MANUAL. SUBSIDES AS DETERMINED BY ANY CITY INSPECTORS. CONCRETE TRUCK / EQUIPMENT WASHING, INCLUDING THE CONCRETE TRUCK CHUTE AND
17. INSPECTION. THE CONTRACTOR SHALL INSPECT SITE POLLUTANT SOURCES AND IMPLEMENT CONTROL MEASURES AT A MINIMUM OF ONCE ASSOCIATED FIXTURES AND EQUIPMENT. z
EVERY TWO WEEKS DURING CONSTRUCTION AND WITHIN 24 HOURS FOLLOWING A PRECIPITATION EVENT. DOCUMENTATION OF EACH INSPECTION SHALL O O 1-"1
BE RECORDED AND RETAINED BY THE CONTRACTOR. 42. ALL CONCRETE AND EQUIPMENT WASHING SHALL USE STRUCTURAL CONTROL MEASURES APPROPRIATE TO THE VOLUME OF WASH AND O
18. ALL TEMPORARY CONTROL MEASURES SHALL BE CLEANED, REPAIRED, OR RECONSTRUCTED AS NECESSARY IN ORDER TO ASSURE CONTINUAL FREQUENCY OF USE. THESE CONTROL MEASURES SHALL BE LOCATED, WHERE PRACTICAL, AT LEAST FIFTY (50) FEET FROM ANY PERMANENT OR U U a-
PERFORMANCE OF THEIR INTENDED FUNCTION. ALL RETAINED SEDIMENTS, PARTICULARLY THOSE ON PAVED ROADWAY SURFACES, SHALL BE INTERIM STORMWATER STRUCTURES OR DRAINAGE WAYS AND SHALL BE MONITORED AS PART OF THE ROUTINE INSPECTIONS. THESE AREAS SHALL
REMOVED AND DISPOSED OF IN A MANNER AND LOCATION SO AS NOT TO CAUSE THEIR RELEASE INTO ANY DRAINAGE WAY. BE CLEARLY IDENTIFIED AND PROTECTED FROM ANY WASH FROM LEAVING THE CONTROL MEASURE. IF FREQUENT ACCESS FROM HARDSCAPE TO THE
19. ANY CONTROL MEASURE MAY BE SUBSTITUTED FOR ANOTHER STANDARD CONTROL MEASURE SO LONG AS THAT CONTROL MEASURE IS EQUAL CONTROL MEASURE IS TO OCCUR, A STRUCTURAL TRACKING CONTROL MEASURE SHALL BE IMPLEMENTED. THESE CONTROL MEASURES SHALL BE
TO, OR OF GREATER PROTECTION THAN THE ORIGINAL CONTROL MEASURE THAT WAS TO BE USED IN THAT LOCATION. (EX. SILT FENCE, FOR FREQUENTLY CLEANED OUT. Q
WATTLES, OR FOR COMPACT BERMS) WATTLE ALONE ON COMMERCIAL CONSTRUCTION SITES HAVE SHOWN TO BE AN INEFFECTIVE SUBSTITUTE FOR 43. THE DEVELOPER IS RESPONSIBLE FOR ENSURING WASHING ACTIVITY IS TAKING PLACE AT THE APPROPRIATE CONTROL MEASURE AND SITE
SILT FENCE OR COMPACT BERMS UNLESS IT IS ACCOMPANIED BY A CONSTRUCTION FENCE TO PREVENT VEHICLE TRAFFIC. WORKERS ARE NOT WASHING OR DUMPING WASH WATER ON TO THE DIRT OR OTHER UNCONTROLLED LOCATIONS. (n
20. ANY IMPLEMENTATION OR REPLACEMENT OF EXISTING CONTROL MEASURES FOR A NON-STANDARD CONTROL, OR ALTERNATIVE CONTROL DEDICATED ASPHALT AND CONCRETE BATCH PLANTS Uj Uj
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MEASURE, SHALL REQUIRE THE REVIEW AND ACCEPTANCE BY THE CITY EROSION CONTROL STAFF BEFORE THE MEASURE WILL BE ALLOWED TO BE 44. DEDICATED ASPHALT AND CONCRETE BATCH PLANTS ARE NOT ACCEPTABLE ON CONSTRUCTION SITES WITHIN THE CITY OF FORT COLLINS ED N
USED ON THIS PROJECT. THESE CONTROL MEASURES'DETAILS SHALL BE SUBMITTED, REVIEWED AND ACCEPTED TO BE IN ACCORDANCE WITH THE WITHOUT AN EXPRESSED WRITTEN REQUEST AND PLAN TO REDUCE POLLUTANTS ASSOCIATED WITH THAT TYPE OF ACTIVITY AND APPROVAL BY THE 00
EROSION CONTROL CRITERIA BASED UPON THE FUNCTIONALITY AND EFFECTIVENESS IN ACCORDANCE WITH SOUND ENGINEERING AND HYDROLOGICAL CITY OF FORT COLLINS SPECIFICALLY THE EROSION CONTROL INSPECTOR. THE DEVELOPER SHALL INFORM THE EROSION CONTROL INSPECTION STAFF
PRACTICES. OF ANY DEDICATED ASPHALT, OR CONCRETE BATCH PLANTS THAT IS TO BE USED ON SITE.
LAND DISTURBANCE, STOCKPILES, AND STORAGE OF SOILS CONCRETE SAW CUTTING MATERIALS
21. THERE SHALL BE NO EARTH-DISTURBING ACTIVITY OUTSIDE THE LIMITS DESIGNATED ON THE ACCEPTED PLANS. OFF ROAD STAGING AREAS OR 45. SAW CUTTING MATERIAL SHALL BE IN ACCORDANCE WITH MUNICIPAL CODE §12-150 FOR AIR EMISSIONS AND ALL WATER APPLICATIONS TO
STOCKPILES MUST BE PREAPPROVED BY THE CITY. DISTURBANCES BEYOND THESE LIMITS WILL BE RESTORED TO ORIGINAL CONDITION. THE SAW CUTTING SHALL PREVENT MATERIAL FROM LEAVING THE IMMEDIATE SITE AND COLLECTED. THESE CUTTING LOCATIONS, ONCE DRIED, SHALL
22. PRE-DISTURBANCE VEGETATION SHALL BE IDENTIFIED, PROTECTED, AND RETAINED WHEREVER POSSIBLE. REMOVAL OR DISTURBANCE OF
EXISTING VEGETATION SHALL BE LIMITED TO THE AREA REQUIRED FOR IMMEDIATE CONSTRUCTION OPERATIONS, AND FOR THE SHORTEST PRACTICAL 0
PERIOD OF TIME. THIS SHOULD INCLUDE SEQUENCING AND PHASING CONSTRUCTION ACTIVITIES IN A WAY SO THAT THE SOIL IS NOT EXPOSED FOR _j Z
LONG PERIODS OF TIME BY SCHEDULE OR LIMIT GRADING TO SMALL AREAS. THIS SHOULD ALSO INCLUDE WHEN PRACTICAL ADVANCING THE z
SCHEDULE ON STABILIZATION ACTIVITIES SUCH THAT LANDSCAPING TAKES PLACE SHORTLY IF NOT IMMEDIATELY AFTER GRADING HAS OCCURRED. O O (n
VEGETATION EFFORTS SHALL START AS SOON AS POSSIBLE TO RETURN THE SITE TO A STABILIZED CONDITION. SENSITIVE AREAS SHOULD AVOID CONSTRUCTION SEQUENCING CHART CALCULATIONS CHART 1-1 V J
CLEARING AND GRADING ACTIVITIES AS MUCH POSSIBLE. U w
23. ALL EXPOSED SOILS OR DISTURBED AREAS ARE CONSIDERED A POTENTIAL POLLUTANT AND SHALL HAVE CONTROL MEASURES IMPLEMENTED Utilities Rat work Vertical TOTALDISTURBEDARCE 1.33 ACRES O z Q
ON THE SITE TO PREVENT MATERIALS FROM LEAVING THE SITE. 1Vbbilization Demolition Grading Installation Installation Installation Landscape Demobilization TOTAL"ONSITE'AREP,OFDISTUR6ANCE 1.33 ACRES
TOTAL"OFFSITE'AREAOF DISTURBANCE 0.15 ACRES � O O
24. ALL SOILS EXPOSED DURING LAND DISTURBING ACTIVITY (STRIPPING, GRADING, UTILITY INSTALLATIONS, STOCKPILING, FILLING, ETC.) SHALL BE Best Management Practices(BWs) TOTALSI�RAGEISTATURBANEE NA W U Z U
KEPT IN A ROUGHENED CONDITION AT ALL TIMES BY EQUIPMENT TRACKING, SCARIFYING OR DISKING THE SURFACE ON A CONTOUR WITH A 2 TO 4 structural"Installation" TOTAL HAULROADSAREA NA
INCH MINIMUM VARIATION IN SOIL SURFACE UNTIL MULCH, VEGETATION, AND/OR OTHER PERMANENT EROSION CONTROL IS INSTALLED. SIt Fence- CONSTRUCTION VEHICLETRAFFICAREA NA Submitted for SPAR: 03 11 2025
25. NO SOIL STOCKPILE SHALL EXCEED TEN (10) FEET IN HEIGHT. ALL SOIL STOCKPILES SHALL BE PROTECTED FROM SEDIMENT TRANSPORT Surface Fbugheni ng ESTIMATE PERCENTOFPROJECTAREA Submitted for FDP: 04 30 2025
THROUGH THE USE OF SURFACE ROUGHENING, WATERING, AND DOWN GRADIENT PERIMETER CONTROLS. ALL SOIL STOCKPILES SHALL BE PROTECTED VehicleTrackingPad* EXPOSED 34%
FROM SEDIMENT TRANSPORT BY WIND IN ACCORDANCE WITH MUNICIPAL CODE §12-150. ALL STOCKPILES SHALL BE FLATTENED TO MEET GRADE OR Inlet Protection* Anyprior inlets that could use protecting ES11 MATE PERCENTVEGETATIVECOVER 18% Density �U�,Iuur kL�vlsiun Date
REMOVED FROM SITE AS SOON AS PRACTICAL, AND NO LATER THAN THE COMPLETION OF CONSTRUCTION ACTIVITIES OR ABANDONMENT OF THE FbckSocksF Any prior inlets that could use protecting Loveland clay loam, Carusoclayloam
PROJECT. ALL OFF-SITE STOCKPILE STORAGE LOCATIONS IN CITY LIMITS SHALL HAVE A STOCKPILE PERMIT FROM THE CITY ENGINEERING Collecting Asphalt/Concrete Saw CuttingMste I EXISTING SOIL TYPE Type and Table Nlountainloam
DEPARTMENT PRIOR TO USING THE AREA TO STORE MATERIAL. IF FREQUENT ACCESS FROM HARDSCAPE TO THE STOCKPILE IS NEEDED A Concrete Washout Area- GROUNDVVATERDEPTH 6 feet
STRUCTURAL TRACKING CONTROL MEASURE SHALL BE IMPLEMENTED. 'Al BMPs to be Femoved once Construction is Complete. NUMBEROF PHASESVV/PROJECT 1
26. ALL REQUIRED CONTROL MEASURES SHALL BE INSTALLED PRIOR TO ANY LAND DISTURBING ACTIVITY (STOCKPILING, STRIPPING, GRADING, ETC.). TOTALVOLUMEOFIMPORT(+)/
ALL OF THE REQUIRED EROSION CONTROL MEASURES MUST BE INSTALLED AT THE APPROPRIATE TIME IN THE CONSTRUCTION SEQUENCE AS Vegetative EXPORT(-)MATERIALS 137 cubic yards
INDICATED IN THE APPROVED PROJECT SCHEDULE, CONSTRUCTION PLANS, AND EROSION CONTROL REPORT. Temporary Seeding Ranting Anytimethesitewill sit dormentlongerthan30Days. TOTALAREAOFSTOCKPILE]NGOFFILL
27. ALL INLETS, CURB-CUTS, CULVERTS, AND OTHER STORM SEWER INFRASTRUCTURE WHICH COULD BE POTENTIALLY IMPACTED BY CONSTRUCTION Mulching/Sealant Anytime the site will sit dorment longer than 30 Days. ORBORROWAREASOFFSITE 400 CF
ACTIVITIES SHALL BE PROTECTED WITH CONTROL MEASURES. MATERIAL ACCUMULATED FROM THIS CONTROL MEASURE SHALL BE PROMPTLY REMOVED Permanent Seeding Planting STEEPEST-SLOPE 3:1 H:V 349 3
AND IN CASES WHERE THE PROTECTION HAS FAILED, THE PIPES SHALL BE THOROUGHLY CLEANED OUT. Sod installation DISTANCEF ARIPARIANAREA F
SESITIVEAREA 65 Feet
28. ALL STREAMS, STREAM CORRIDORS, BUFFERS, WOODLANDS, WETLANDS, OR OTHER SENSITIVE AREAS SHALL BE PROTECTED FROM IMPACT BY
ANY CONSTRUCTION ACTIVITY THROUGH THE USE OF CONTROL MEASURES.
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� � \ \1�\ \ E _ E\� f� ER WALKWAY % / ��� i � �� 'j � � �� �/ I � ��� . �;
� 0„s V � � • -�� EX. CONCRETE DRAINAGE
1 P UTFALL I I CHANNEL UNDER WALKWAY LOT11 PROSPECT Q
� \ \ � / �w \ \ • � / LOT7 // I 1\\ o / INDUSTRIAL
EX. 4" PERF STRM \ i I I ss � I I LOTTO
i EX. STRM JUNCTION STRUCTURE PROSPECT PROSPECT PARK Cn
• \
• � � � \� , INDUSTRIAL INDUSTRIAL Ln
PARK PARK
QD I L 157�0 , =R50.00
�1�0' 00' 00" 00
U
UD UD UD X
EROSION CONTROL LEGEND SEE SHEET C1.01 FOR PROJECT LEGEND
I I w � 11 ( ) EROSION CONTROL NOTES
LOT6
LOT3 1. REFER TO LANDSCAPE PLANS FOR TREE PROTECTION DETAILS. z
EX. 4" PERF STRM I PROSPECT I I PROSPECT OD PROPOSED LIMITS OF DISTURBANCE
I OS C Q
LOT2 INDUSTRIAL INDUSTRIAL
PROSPECT PARK I I PARK x SF SILT FENCE �
INDUSTRIAL IA.
PARK I I I CF CONSTRUCTION FENCE BENCHMARK. J
' EX. 4" PERF STRM
z
• I I I PROJECT DATUM: NAVD88 JO/
UD UD UD UD U UD UD VTC VEHICLE TRACKING CONTROL BENCHMARK # 3 07 Q I--I
• NORTHWEST CORNER OF TIMBERLINE RD. AND PROSPECT RD. ON THE Cn z
w X IP NORTHWEST CORNER OF A TRAFFIC SIGNAL BASE. O
INLET PROTECTION
ELEVATION: 4919.13 � O
z
BENCHMARK # 4-07 �--I w U
� I RS ® ROCK SOCK SOUTHWEST CORNER OF TIMBERLINE RD. AND BEAR MOUNTAIN DR. DUE NORTH
I
OF NEW POLICE BUILDING ON THE SOUTHWEST CORNER OF A CATCH BASIN. Submitted for SPAR. 03 11 2025
• I I � � X ELEVATION: 4942.84 Submitted for FDP: 04 30 2025
' I EX. 4" PERF STRM SS STREET SWEEPING
PLEASE NOTE: THIS PLAN SET IS USING NAVD88 FOR A VERTICAL DATUM. k-VlSluil ;,,u;;,uur kuvisiun Date
I E E E -�``` SURROUNDING DEVELOPMENTS HAVE USED NGVD29 UNADJUSTED DATUM (PRIOR
UD E r FLOW DIRECTION CITY OF FORT COLLINS DATUM) FOR THEIR VERTICAL DATUMS.
• E UD UD
E UD
-mom
IF NGVD29 UNADJUSTED DATUM (PRIOR CITY OF FORT COLLINS DATUM) IS
— — — — — — — — — — — — — — X REQUIRED FOR ANY PURPOSE, THE FOLLOWING EQUATION SHOULD BE USED:
— — — — — — — — ...... .... ... .. :..... ...... ...... ...... ...... ...... ..... ..... ...... ...... DATUM - NAD STED DATUM (PRIOR CITY OF FORT COLLINS DATUM) = NAVD88
NGVD29 UNADJUSTED P M
BASIS OF BEARING:
7Z
Uj
COLORADO STATE PLANE COORDINATES NAD 83(2011) DATUM. HORIZONTAL 3493
Q CONTROL BASED UPON TRIMBLE VRS NOW NETWORK
Know whafs below. C6n02
Call before you dig.
EX. 24" RCP W/ FES 00 c)
a �
os
o ti
EX. STRM INLET
LL
EX. 24" RCP W/ FES
i
N L=317.90, R=636-13�
/ �=28' 38 -se- — _ oD SHARP POINT DRIVE 30 0 30 60 Uj
EX. STRM INLETLn
\1 I �' ' = _ t oLn
"' � ==3 - SCALE IN FEET 0 00
IP PROPERTY LINE
— ---4896- — — _ - _ RAIN GARDEN 1 U -/ \ \ 0 0
_ RAii: GARDEN 2 I U
489 L
LO
L=21.02, R=15.00 >' 89
0==80' 17' 38" - - _ - I/ I I I I
a`� Elevation
Consulting
L=18.61, R=15.00
a .. / .• / ,
� UD
\ �\ I EX. STRM INLET 1 y I _ 0=71' 04 22
s ' st
4LLI
a 3 -�- I - SF - ' 489&-
7 0
X CO BL I= �,, — 9 12 I S EX. STRM INLET IFS
\ - : y ,♦ sF
>Ss \ I AINA E � � _ _ _ P I I I I sR —
A N N E
12 STORM Ir
\ ss \ ESMT =� - / .. cw . . y' ROW -�
\ \ R PLAT " . \ \
cv D EX. DRAINAGE /�
l s
\
CHANNEL UNDER
/ WALKWAY EX. (3) 12" STRM N I - I �\
6' UTIL ESMT FE=4897. 0 ' \� \ I I Ln
AREA INLET
Al
V EXISTING BUILDING TO BE VACATED EX. CONCRETE DRAINAGE (�
o I I I CHANNEL UNDER WALKWAY I [V
/ \ s V - 1825 SHARP POINT DRIVE I I I I I EXISTING BUILDING s Q
I OR H
„o moo• \ :1. Ln
X. G_ SS SWAI_E FFE=4897.30' I I 1901 SHARP POINT DRIVE �♦
ROPERIY LINE I I I I I I -� 6' UTIL ESMT FFE=4896.00' EX. ROOF DRAIN coo :y ' Q O
15' ESMT TO BE VACATED 15' ESMT TO (� LOT12 OO
ko PROSPECT
6. - \ TO BE VACATED I I I I I BE VACATED PROPERTY LINE iN s . I ~�
INDUSTRIAL
F3L-FL /1 EX. METAL DRAINAGE CHASE I I I � ' I
EX. COBBLE s :, I PARK U
LOT] q k��� ���, 60 ACCESS, I DRAINAGE
VIPONTAT 1 = _ = — I �� UTILITIES AND I I EX. (2) 12 STRM CHANNEL \'
• / I
PROSPECT .. _ ... • ' 's..
'' •. ° ' + ° DRAINAGE EASEMENT I \\
PARKEASTVZ/x , I _
� •� . � � . ,. 489 , .• TO BE VACATED —� - Fo C i--i
S •. O
\ / EX. 12 STRM EX. 1 " STRM EX. STRM INLET I ~�
s . � `. . s. ''I .: s : EX. FORM INLET (TYP) I \ `� EP R PLMT •:
z
/ , s, ti , ' ° ° � LO EX CC99�
� 7'T
l I
EX. METALS s a. ' I
V
.S DRAINA E CHASE � •. s° • s " I I �.s.�•_ ; ..�'. ��' I I � � - 35.9' � I r�
SST tu} L T' 1 s,.. :S y . ..�.. . .. ' °, X. TRM INLET I _ \
DRAINAGE CHANNEL • ..s E 0
EX. STRM I(�JLET
'
.s z zLL
X. I12 WVC''ST M °
..., / EX. STRM t•P1�ET 1S } ' � , \ '•.
s ; °s .° O O
� S
EX. CONCRETE
_ �\ — -- T s / I PROPERTY LINE \� 1 1 L=.�.09, R=15.00
\ 0
DRAIN PAN / A
0 46' 10 05 �; ••' � :. � — — � E � 6' 1,1 13 •:
SS
—
- — - 1 0 0
\ L-40. R=50.00 /
L=40.29, R=50.00 — — — — — — C DRAINAGE \ - U U a-
\ 0=46' 10' 05" �':f — 46 11 /
• \ \ _ E\\ N ER WALKWAY",/
� � ss � \ EX. CONCRETE DRAINAGE � s � •6
CHANNEL UNDER WALKWAY LOT 11
w �� � '/ \\\� i
\ \ � \ _� ;
'\ — � 1 / PROSPECT
EX. 4" PERF STRM \ _ i I I ss ` � LOT 7 I I LOTTO o INDUSTRIAL
EX. STRM JUNCTION STRUCTURE PROSPECT PROSPECT PARK CI�
_ (4) 4- PERF STRNI , INDUSTRIAL I I INDUSTRIAL LU LU Ln
_ - s ` \ \ \ PARK PARK
C I L 157 0 , R=50.00 s
0' 00' 00" M
o \ J j
X
UD U UD UD UD EROSION CONTROL LEGEND SEE SHEET C1.01 FOR PROJECT LEGEND EROSION CONTROL NOTES
LOT3 LOT6 `'' 1. REFER TO LANDSCAPE PLANS FOR TREE PROTECTION DETAILS. z
EX. 4" PERF STRM I PROSPECT I I PROSPECT LOD PROPOSED LIMITS OF DISTURBANCE
� I � Q
LOTZ INDUSTRIAL INDUSTRIAL
PROSPECT PARK I I PARK SF SILT FENCE BENCHMARK: J
INDUSTRIAL I
PARK CONSTRUCTION FENCE PROJECT DATUM: NAVD88
zJ
EX. 4" PERF STRM BENCHMARK # 3-07 O
NORTHWEST CORNER OF TIMBERLINE RD. AND PROSPECT RD. ON THE 2: 0
• u — u� �� VTC VEHICLE TRACKING CONTROL NORTHWEST CORNER OF A TRAFFIC SIGNAL BASE. 0
UD uu UD u� � ELEVATION: 4919.13
W
w IP o INLET PROTECTION BENCHMARK # 4-07 � O z
SOUTHWEST CORNER OF TIMBERLINE RD. AND BEAR MOUNTAIN DR. DUE NORTH O
OF NEW POLICE BUILDING ON THE SOUTHWEST CORNER OF A CATCH BASIN. z
ROCK SOCK ELEVATION: 4942.84 I--I LlJ U
LL
Submitted for SPAR: 03 1i 2025
. I I PLEASE NOTE: THIS PLAN SET IS USING NAVD88 FOR A VERTICAL DATUM. Submitted for FDP: 04 30 2025
$$ STREET SWEEPING SURROUNDING DEVELOPMENTS HAVE USED NGVD29 UNADJUSTED DATUM (PRIOR
EX. 4" PERF STRM I I CITY OF FORT COLLINS DATUM) FOR THEIR VERTICAL DATUMS.
IE E /� Revision Number Revision Date
E IF NGVD29 UNADJUSTED DATUM PRIOR CITY OF FORT COLLINS DATUM IS
' E �♦
- — - - - - - - u uJ - "�`F - FLOW DIRECTION
REQUIRED FOR ANY PURPOSE, THE FOLLOWING EQUATION SHOULD BE USED:
NGVD29 UNADJUSTED DATUM (PRIOR CITY OF FORT COLLINS DATUM) = NAVD88
— — — — — — — — — — — — " $R SURFACE ROUGHENING DATUM -3.18'.
BASIS OF BEARING:
CW CONCRETE WASHOUT AREA COLORADO STATE PLANE COORDINATES NAD 83(2011) DATUM. HORIZONTAL
CONTROL BASED UPON TRIMBLE VRS NOW NETWORK
a
7Z
3493
7Z
SP STOCKPILE MANAGEMENT
Know whafs below. C6n03
Call before you dig.
EX. 24" RCP W/ FES 00 c)
a �
os
o r_ ti
EX. STRM INLET
LL
EX. 24" RCP W/ FES
I i
4S '
N L=317.90, R=63�t3 �
/ �=28' 38 -se- _ REMOVE , "� SHARP POINT DRIVE LU
— � 30 0 30 60 0 L,
EX. STRM INLET REMOVE _ \ M "
\1 / I
"- "' PROPERTY LINE SCALE IN FEET0 00
_ — IP _ U _ 2
RAIN GARDEN 1 RAIN[ GARDEN 2 E N
_ P _
\1 ILo
7Z <
o
L=21.02, R=15.00
A==80' 17' 38"
4s,• `' Elevation
G I I I W y� W .. . W Consulting
EM VIE• L=18.61, R=15.00 �.
• �\ \ EX. STRM INLET 0=71' 04' 22"
_ _ — � .L _ • — • • •% � � � I
W E 0 1
W W RE � y � o
� \ ROW , /�, I W W � W W W �W RE � , ....11 W W W '�'
SIR
•i I SICORM W W W W W W W W W W
>s \ I I% _ _ / _ _ 6y.. � e 1�♦ 12 E1uIWVE W W W STRINI�
s \ I EX. COBL _ _ 9P II 1 � � II WWWyW W \1I
. .
A I N A E / 1 �, . �. W W aw_ N W
C ANN L I: .' . t a9� °-R ' R'' I I S • r W w w j W W 1� W�Tur'�M W
• 1 7
' � ' LS
\ r— /. �— , --- ••, �, ,� W W WIY
W W W W 6O'EX. Ir
6 // ' / '`.. � / W W W W W W y W w I�IW I ///W W y W W W y, .y W '� W W / W ROW
\ ESMT fi -
_ I/r W W W i`
\ R PLAT I I o ,�.
N 0 EX. DRAINAGE 'i �� /�
S I�� CHANNEL UNDER —
�� WALKWAY N I I II ` 0' ( I I AREA INLET
4�5 I Q EX. (3) 12 STRM r . . .
O
TOBE VACATED EX. CONCRETE DRAINAGE
EXISTING BUILDING I '
0"o = - 1825 SHARP POINT DRIVE I I � I I CHANNEL UNDER WALKWAY s� z
N
, \ I I I I I I EXISTING BUILDING I 1 I Ln
X. SS SWA_E FFE=4897.30' 1901 SHARP POINT DRIVE ♦ OR Q o ROPERTY LINE -� 6' UTIL ESMT FFE=4896.00' EX. ROOF DRAIN co :y Q
15 ESMT I I TO BE VACATED 15' ESMT TO (� LOT 1_ OO
PROSPECT
361 \ \ r-1TO BE VACATED I I I I I BE VACATED PROPERTY LINE i� ;s ~�
> / EX. METAL DRAINAGE CHASE I I I INDUSTRIAL O
FL-FL
I I q _ � I � I I I s
I PARK U
EX. COBBLE DRAINAGE EX. (2) 12" STRM �VIPONTAT UTILITIES AND
PROSPECT 1 I DRAINAGE EASEMENT I 1\
.• , ..
PARKEAST —
� � , 0' s �'E89 � ., >. TO BE VACATED —� _ — Fo i--i
,. . O
71> / EX. 12 STRM LF
EX. 1 STRM EX. STRM INLET E 6' E MT ~� J
`/ •..♦ '.
:'RE s.' '�.. EX. TORM INLET (TYP) I :�. • P R PL T
• z
/ I \ Cr REMOVE \ Rfi1ul VE �.RfMO� ` . �•. s, � 'i • LO EX. C TE
s � U
W W ..W 14 s W W. W 4o I
ME AL REM�VE s a. I -
4 I.-
/
s s. . . 1 I
I DRAINA((�E CHASE 35.9'
\ — s -
EX. STIRM I(�JLET' .. °" ,.. .. Sp. W i E
.. ,•,: .,. 9> y. `».�, . •S X. TRM INLET I M _ ,�
\ s �.,.
\ o
'. S' � ' W . _ z z
X. I12 [2VC' ST M .
LL
EX. STRM t�P1�ET 1s\ } . � 4.: . W W W
_ W - O O
e , W
:. L=12.09 R-1:;.00 r, �\.. `'� 'y s . . _ \� I CF REMOVE -
., _ � : . �• y. EX. CONCRETE � \ � L .2 09 R 15.00
T t / : :s. ♦ / I PROPERTY LINE / . .
0=46' 10 05 � s, DRAIN PAN A \
/ r. •'•.. � a' '.r W � � it
_ Y
40W SS
.•
LS 0 0
\ Cz SS
L=40.29, R=50.00 _ .� W �W W W ;. - � �-� y — - - - _ 1 L 40. R-50.00 / U U
— Q — — — W W W W W s ( ..f% _ C E-DRAINAGE \ \ 46' 11' 0-
0-46' 10 05 �— W W W W _
W E\� N ER WALKWAY
- Ut �rt,� W W W W W _ EX. CONCRETE DRAINAGE
CHANNEL UNDER WALKWAY LOT11 Q
\ I I w PROSPECT
EX. 4" PERF STRM \ _ I I ` ss ` X LOT 7 I I LOTTO o INDUSTRIAL
EX. STRM JUNCTION STRUCTURE PROSPECT PROSPECT PARK CIJ
INDUSTRIAL I I INDUSTRIAL
_ (4) 4 PERF STRh� Uj Uj�\ Ln
\ _ L 157 0 , R=50.00 ss ` PARK I I PARK M M N
\ I I ��0' 00' 00" 00 RESOD FIELD AFTER STORM \ 00
PIPE CONSTRUCTION —UD I I LID
��o x
UD U UD EROSION CONTROL LEGEND SEE SHEET C1.01 FOR PROJECT LEGEND EROSION CONTROL NOTES
LOT3 LOT6 w 1. REFER TO LANDSCAPE PLANS FOR TREE PROTECTION DETAILS. z z
EX. 4" PERF STRM PROSPECT I I PROSPECT V PROPOSED LIMITS OF DISTURBANCE O Q
LOTZ INDUSTRIAL INDUSTRIAL 1--q J
PROSPECT PARK I I PARK SF SILT FENCE U a
INDUSTRIAL
I I � I CF13 CONSTRUCTION FENCE BENCHMARK: O J
PARK / PROJECT DATUM: NAVD88
EX. 4" PERF STRM I I � w O
uo VTC VEHICLE TRACKING CONTROL BENCHMARK # 3-07
UD UD - UD UD U — UD NORTHWEST CORNER OF TIMBERLINE RD. AND PROSPECT RD. ON THE J
NORTHWEST CORNER OF A TRAFFIC SIGNAL BASE.
INLET PROTECTION ELEVATION: 4919.13 Q z
z BENCHMARK # 4-07 I--I 0
ORS ROCK SOCK SOUTHWEST CORNER OF TIMBERLINE RD. AND BEAR MOUNTAIN DR. DUE NORTH U
OF NEW POLICE BUILDING ON THE SOUTHWEST CORNER OF A CATCH BASIN.
I �
I ELEVATION: 4942.84 Submitted for SPAR: 03 li 2025
STREET SWEEPING Submitted for EDP: 04 30 2025
EX. 4" PERF STRM I I PLEASE NOTE: THIS PLAN SET IS USING NAVD88 FOR A VERTICAL DATUM.
SURROUNDING DEVELOPMENTS HAVE USED NGVD29 UNADJUSTED DATUM (PRIOR Revision Number Revision Date
E E E
E LID UD UD FLOW DIRECTION CITY OF FORT COLLINS DATUM) FOR THEIR VERTICAL DATUMS.
u IF NGVD29 UNADJUSTED DATUM (PRIOR CITY OF FORT COLLINS DATUM) IS
SR
REQUIRED FOR ANY PURPOSE, THE FOLLOWING EQUATION SHOULD BE USED:
x SURFACE ROUGHENING NGVD29 UNADJUSTED DATUM (PRIOR CITY OF FORT COLLINS DATUM) = NAVD88
— — — — — — — — — — — — I— — — — — — — — — — —. -
- — — — — — — —_..i�--" ...—..,.—..... ...... ...... .... ...... ...... ..... ...... ..... ...... ...... ��.... ...... ..... ...... ...... ...... ......� ..... ...... � ...... ..... DATUM,,,..._ 3.18'.
CD W W W SITE LANDSCAPING (RE: LANDSCAPE) BASIS OF BEARINQ
COLORADO STATE PLANE COORDINATES NAD 83(2011) DATUM. HORIZONTAL 349 3
7Z
Q CONTROL BASED UPON TRIMBLE VRS NOW NETWORK
CW CONCRETE WASHOUT AREA
Know what's below. C6n04
Call before you dig.
Z
WIRE SCREEN . . M M
(APPROX. 1/2 IN. MESH) CONCRETE BLOCK 'e !
Vehicle Tracking Control (VTC) S -4 Concrete Washout Area (CA.) M1VI-17Z a a
00
r r
a
==== FILTER FABRIC
STEEL OR WOOD POST
i CONCRETE WASHOUT
� f (�` SIGN nCW
20 FOOT 1.
(WIDTH CAN BE
LESS If CONST. A VEHICLE TRACKING N
VEHICLES ARE 3:1 3 x 8 MIN. 3.1 _� G4INTRIOL (SEE o
PHYSICALLY H�
,� VTC L?ETAIL) OR
CONFINED ON �. OTHER STABLE � E
BOTH SIDES)
GRAVEL FILTER BACK FILLED TRENCH SIDEWALK OR OTHER ` SURFACE
A (APPROX. 3/4 IN. DIA.) II�II I I- PAVFCI SURFACE 50 FOOT (MIN.) d
m
F c
AREA INLET I 7Z < Ln o
- `III .n U
NTH GRATE -'--I�I- r,r: � r j M ..
5 MIN. -?I
CONCRETE WASHOUT AREA FLAN
t a "12 TYP.
COMPACTED BERM AROUND
THE PERIMETER
FILTER FABRIC �� 4 4'--�� (MIN) I} 22 SLOPE
�gPCH SECURELY TO
E l e v a t i o n
STEEL OR I3' MIN, -�1
WOOD POST LINO15TUREIE0 OR >3 111 >1 C o n s u l t i n g
° COMPACTED BACK FILL PUBLIC UNLESS OTHERWISE SPECIFIED COMPACTED SOIL
ROADWAY BY LOCAL JURISDICTION, USE B X e MIN. VEHICLE TRACKING
COOT SECT. #703. AASHTO 03 CONTROL (SEE VTC
RUNOFF COARSE AGGREGATE OR 6' DETAIL )
MINUS ROCK SECTION A
A GRAVEL FILTER - - - - -
I=III=III=III=III - I -I -_--- APPROXIMATELY NON-WOVEN GECJTEXTILE FABRIC CWA-1 . CONCRETE WASHOUT AREA
PLAN VIEW 4 IN. X 4 IN. TRENCH BETWEEN SOIL AND ROCK
-III-III-III-III- I-�I-III-III-�I- CWA INSTALLATION NOTES
WIRE SCREEN I�-III-III-III=III I I-III-III-III- 1. S PLAN VIEW FOR:
OVERFLOW III-III-III-III -I-III-I I I-III-I UNLESS TION. USE DOT SEC B# LOCAL -CWA INSTALLATION LOCATION
INSTALL ROCK FLUSH WITH JURISDICTION. USE GDOT SECT. �703, AASHTO
10 IN. III=III=III=III I I=11 =III=I I I=I I I-I I I-III- N
MIN. =I OR BELOW TOP OF PAVEMENT �V �I3 COARSE AGGREGATE 2. DO NOT LOCATE AN UNLINED CWA WITHIN 400' OF ANY NATURAL DRAINAGE PATHWAY OR
GRAVEL FILTER -III IIII=III= III-III-III-III-III I- OR f� MINUS ROCK (MIN)' WATERRODY. DO N07 'LOCATE WITHIN 1,000' OF ANY WELLS OR DRINKING WATER SOURCES, IF
IN] ❑ ❑ ❑ III=III I I-III-III-III-III= SITE CONSTRAINTS MAKE THIS INFEASIBLE, OR IF HIGHLY PERMEABLE SOILS EXIST ON SITE,
-I I I= I I=III=III=III . I �' THE CWA MUST 13E INSTALLED WITH AN IMPERMEABLE LINER (16 MIL MIN, THICKNESS) OR
RUNOFF ❑ ❑ ❑ I.III I-III-III-III-I SURFACE STORAGE ALTERNATIVES USING PREFABRICATED CONCRETE WASHOUT DEVICES OR A
-I 1- =1I `! !~ NON-WOVEN LINED ABOVE GROUND S SHOULD BE USED.
��- - 11= I - I- ,� TORACE ARE
I FABRIC GEOTEXTILE 3. THE CWA SHALL BE INSTALLED PRIOR TO CONCRETE PLACEMENT ON SITE.
COMPACTED SUBGRADE 4. CWA SHALL INCLUDE A FLAT SUBSURFACE PIT THAT IS AT LEAST IT' BY B' SLOPES I Ln
SECTION VIEW SECTION A LEADING OUT OF THE SUBSURFACE PIT SHALL BE 3-1 OR FLATTER THE PIT SHALL BE AT
LEAST 3' DEEP_
FILTERED WATER GENERAL NOTES: �N
CONCRETE BLOCK 5. 'BERM SURROUNDING SIDES AND BACK OF THE CWA SHALL HAVE MINIMUM HEIGHT Or 1' = V SECTION A-A 1. THE MAXIMUM TRIBUTARY AREA IS LIMITED TO 0.25 6. VEHICLE TRACKING PAD SHALL BE SLOPED 2% TOWARDS THE CWA. O
GENERAL NOTES: ACRES PER 100 FEET OF FENCE. 7. SIGNS SHALL BE PLACED AT THE CONSTRUCTION ENTRANCE, AT THE CWA, AND W
2. INSPECT AND REPAIR FENCE AFTER EACH STORM
1. INSPECT AND REPAIR FILTER AFTER EACH STORM 2. SEDIMENT AND GRAVEL SHALL BE IMMEDIATELY ELSEWHERE AS NECESSARY TO CLEARLY INDICATE THE LOCATION OF THE. CWA TO OPERATORS
EVENT. REMOVE SEDIMENT WHEN ONE HALF OF THE REMOVED FROM TRAVELED WAY OF ROADS. EVENT. REMOVE SEDIMENT WHEN ONE HALF THE HEIGHT VTC- � . AGGREGATE VEHICLE TRACKING, CONTROL OF CONCRETE TRUCKS AND PUMP RICE.
FILTER DEPTH HAS BEEN FILLED. REMOVED SEDIMENT OF THE FENCE HAS BEEN FILLED. REMOVED SEDIMENT SHALLSHALL BE O
SEDIMENT BASIN BASINFILTERING IN AN AREA I MUEA TARY URES.TO A BE DEPOSITED IN AN AREA TRIBUTARY TO A SEDIMENT B. USE EXCAVATED MATERIAL FOR PERIMETER BERM CONSTRUCTION.
BASIN OR OTHER FILTERING MEASURE. � / `
AREA INLET FILTER GRAVEL SILT FENCE v
CITY OF CITY OF
APPROVED: DETAIL CIt�/O'f. APPROVED: DETAIL
..} FORT COLLINS STORM WATER C,.�..} FORT COLLIN' STORM WATER
o `Cd[Ins UTILITIES DATE: 01/03/01 Fort`C%[Ins UTILITIES DATE: 12/27/00 November 20l0 Urban Drainage and Flood.Control District VTC-3 November 2010 Urban Drainage and Flood Control District CWA-3
FORT CODUNS co. CONSTRUCTION DETAILS D - 24 /"`�� FORT COLONS, co. CONSTRUCTION DETAILS �D - 28 z
(970) 221-6700 DRAWN BY: NBJ (970) 221-6700 DRAWN BY: NBJ Urban StDr1n Drainage Criteria.Manual Volume 3 Urban Storm.D'rainage Criteria.Manual Volume 3 O
H�
J
FOCUS TRACKOUT CONTROL SYSTEM INSTALLATION GUIDE z r0
THEVEHICLE
PURPOSE AND DESIGN OF THE FORS TRACKOUT LNDAREAONT O A SYSTEM IS TO EFFECTIVELY REMOVE MOST SEDIMENT'FROM S -4 'vehicle Tracking Control (VTC) m-1 Concrete Washout Area (CWA)
U
VEHICLE TIRES AS THEY Ek7T A DISTURBED LAND AREA ONTO r1 PAVED STREET.THIS MANUAL IS A PLATFORM FROM WHICH TO
INSTALL A FODS TRACKOUT CONTROL SYSTEM.(NOTE: THIS IS NOT A ONE S17F FITS ALL GUIDE.)THE INSTALLATION MAY NEED
CURB INLET TO BE MODIFIED TO MEET THE EXISTING CONDITIONS.EXPECTATIONS,OR DEMANDS OF A PARTICULAR SITE.THIS IS A
F� GUIDELINE.'ULTIMATELY THE PODS TRACKOUT CONTROL SYSTEM SHOULD BE INSTALLED SAFELY VATH PROPER ANCHORING
_ AND SIGNS PLACED AT THE ENTRANCE AND EXIT TO CAUTION USERS AND OTHERS.
O KEY NOTES: INSTALLATION; O
1. THE STrE WHERE THE FOGS TRACKOUT CONTROL
A. FORS TRACKOUT CONTROL SYSTEM MAT. SYSTEM IS TO BE PLACED SHOULD CORRESPOND TO BEST
MANAGEMENT A MU AL . H STA01LJ2ED CONSTRUCTION- ENTRANCE EXIT INSTALLATION T C ION NOES WA MO
B. FODS SAFETY SIGN. M GEENT PRACTICES MUCH POSSIBLE.THE SITE TR AINTENANCE NOTES-G. ANCHOR POINT. WHERE fODS 7f�4CKOUT CON TRL]L SYSTEM IS f�LPLACEDD. SILT OR ORANGE CONSTRUCTION FENCE. SHOULD ALSO MEET OR EXCEED THE LOCAL JURISDICTION I s PLAN VIEW FOR I INSPECT BMPs EACH WORKDAY, AND MAINTAIN THEM IN EFFECTIVE OPERATING CONDITION. O O ;
OR STORM WATER POLLUTION PREVENTION PLAN(SWPPP) -LOCAtION OF CONSTRUCTION ENTRANCE($)/EXIT(S). MAINTENANCE OF 8MPS SHOULD BE PROACTIVE, NOT REACTIVE. INSPECT BMPs AS SOON AS ILL-HELL
REOUIREMENTS. -TYPE OF CONSTRUCTION ENTRANCE(S)/EXITS(S) (WI'TH/WITHOUT WHEEL WASH, POSSIBLE (AND ALWAYS WITHIN 24 HOURS) FOLLOWING A STORM THAT CAUSES SURFACE
2. CALL FOR UTILITY LOCATES 3 BUSINESS DAYS IN CONSTRUCTION MAT OR T'RM). EROSION, AND PERFORM NECESSARY MAINTENANCE Q
ADVANCE OF THE OF FODS TRACKOUT CONTROL SYSTEM
GRAVEL FILTER � o o p INSTALLATION UTILITIES.
CAL FOR UTILITY
IC UNDERGROUND
A 2 CONSTRUCTION MAT OR TRM STABLED CONSTRUCTION ENTRANCES ARE ONLY TO EIE 2, FREQUENT OBSERVATIONS AND MAINTENANCE ARE NECESSARY TO MAINTAIN BMPS IN
(APPROX. 3/4 W. DIA.) UTILITIES.CALL THE UTILITY NOTIFICATION CENTER AT Bi a. EFFECTVE OPERATING CONDITION. INSPECTIONS AND CORRECTIVE MEASURES SHOULD BE
3. ONCE THE SITE IS ESTABLISHED WHERE EGOS USED ON SHORT DURATION PROJECTS (TYPICALLY RANGING FROM A WEEK TO A MONTH)
WIRE SCREEN CONCRETE BLOCK DOCUMENTED THOROUGHLY.
TRACKOCJT CONTROL SYSTEM IS TO BE PLACED,ANY WHERE THERE WILL BE LIMITED VEHICULAR ACCESS,
(APPROX. 1/2 IN. MESH) EXCESSIVE UNEVEN TERRAIN SHOULD BE LEVELED OUT OR
REMOVED SUCH AS LARGE ROCKS,LANDSCAPING 3. A STABILIZED CONSTRUCTION ENTRANCE/�EXJT SHALL BE LOCATED AT ALL ACCESS POINT; 3. WHERE BMPs HAVE FAILED, REPAIR OR REPLACEMENT SHOULD BE INITIATED UPON
DISCOVERY OF THE FAILURE.
MATERIALS,OR SUDDEN ABRUPT CHANGES IN ELEVATION.
WE 'VEHICLES ACCESS THE CONSTRUCTION SITE FROM PAVED RIGHT-OF-WAYS.
0
A 4. THE INDIVIDUAL MATS CAN START TO BE PLACED INTO 4.. THE CWA SHALL BE REPAIRED. CLEANED, OR ENLARGED AS NECESSARY TO MAINTAIN 0 O
ROADWAY POSITION.THE FIRST MAT SHOULD BE PLACED NEXT-1O THE 4. STABILIZED CONSTRUCTION ENTRANCE/EXIT SHALL BE INSTALLED PRIOR TO ANY LAND CAPACITY FOR CONCRETE WASTE. CONCRETE MATERIALS. ACCUMULATED IN PIT, SHALL BE
O CLOSEST POINT OF EGRESS.THIS WILL ENSURE THAT THE DISTURBING ACTIVITIES. ^
VEHICLE WILL EXIT STRAIGHT FROM THE SITE ONTO THE REMOVED ONCE THE MATERIALS HAVE REACHED A DEPTH OF 2. LL
r PAVED SURFACE. 5 A NON-WOVEN GEOTEXTILE FABRIC SHALL BE PLACED UNDER THE STABILIZED
WIRE SCREEN � tl 5. CONCRETE WASHOUT WATER, WASTED PIECES OF CONCRETE AND ALL OTHER DEBRIS U U
2 IN. X 4 IN. 8. AFTER THE FIRST MAT IS PLACED DOWN IN THE CONSTRUCTION ENTRANCE/EXIT PRIOR TO THE PLACEMENT OF ROCK. IN THE SUBSURFACE PIT SHALL BE TRANSPORTED FROM THE JOB SITE IN A WATER-TIGHT
A WOOD STUB PROPER LOCATION,MATS SHOULD BE ANCHORED TO
PREVENT THE POTENTIAL MOVEMENT WHILE THE ADJOINING CONTAINER AND DISPOSED OF PROPERLY.
MATS ARE INSTALLED,ANCHORS SHOULD BE PLACED AT 6. UNLESS OTHERWISE SPECIFIED BY LOCAL JURISDICTION. ROCK SHALL CONSIST 4F OUT
SECT
EVERY ANCHOR POINT(IF FEASIBLE)TO HELP MAINTAIN THE . f�703. AASHTO A3 COARSE AGGREGATE OR 6" (MINUS) ROCK. 6. THE CWA SHALL REMAIN IN PLACE UNTIL ALL CONCRETE FOR THE PROJECT iS PLACED.
I v - MAT IN ITS CURRENT POSITION. <
9. AFTy=RTHE FIRST MAI"IS ANCHORED IN ITS PROPER �STNJ3LIZED NCO{VSTRUCTIO�N�tj(�EP�6tT '1(�I� �IIE� SZT�S 7 WHEN THE CWA IS REMOVED, COVER THE DISTURBED AREA WITH TOP SOIL, SEED AND
GRAVEL FILTER PLACE,AN H BRACKET SHOULD HE PLACED AT THE END OF: MULCH OR OTHERWISE STABILIZED PN A MANNER APPROVED BY THE LOCAL JURISDICTION.
THE FIRST MAT BEFORE ANOTHER MAT IS PLACED ADJACENT 1 INSPECT SUPS EACH WORKDAY, AND MAINTAIN THEM IN EFFECTIVE OPERATING CONDITION
o TO THE FIRST MAT. MAINTENANCE OF BMPs SHOULD BE PROACTIVE, NOT REACTIVE. INSPECT BM'P'S AS SOON AS (DETAIL mopma r" oouaL4; coua+TY. Como A00 Aura THE 01Y or PA WE-R. COLORAOO, NOT +L"Lwo a N AUTOCAD),.
10. ONCE THE SECOND MAT IS PLACED ADJACENT TO THE POSSIBLE (AND ALWAYS WITHIN 24 HOURS) FOLLOWING A STORM THAT CAUSES SURFACE
0 0 • FIRST MAT.MAKE SURE THE H BRACKET IS CORRECTLY EROSION, AND PERFORM NECESSARY MAINTENANCE NOTE: MANY JURISDICTIONS HAVE BMP DETAILS THIN 'VARY FROM UDFCD STANDARD DETAILS,
I.A SITUATED BETWEEN THE TWO MATS,AND SLIDE MATS
A - TOGETHER_ 2 FREOUENT OBSERVATIONS AND MAINTENANCE ARE NECESSARY TO MAINTAIN BMPS IN DIFFERENCES ARE NOTED.
SDIGTIONS AS TO WHICH DETAIL SHOULD BE USED WHEN W W
11. NEXT THE CONNECTOR STRAPS SHOULD gE INSTALLED EFFECTIVE OPERATING CONDITION INSPECTIONS AND CORRECTIVE MEASURES SHOULD BE
PLAN VIEW TO CONNECT THE TWO MATS TOGETHER, DOCUMENTED THOROUGHLY. CO
12. UPON PLACEMENT OF EACH NEW MAT IN THE SYSTEM,
THAT MAT SHOULD 13E ANCHORED AT EVERY ANCHOR POINT 3. WHERE EIMPs HAVE FAILED. REPAIR OR REPLACEMENT SHOULD 13E INITIATED UPON 1-4
OVERFLOW TO HELP STABILIZE THE MAT AND ENSURE THE SYSTEM IS DdSCCVERY OF THE FAILURE. 00
CONTINUOUS WITH NO CAPS IN BETWEEN'THE MATS.
FILTER WATER D 13. SUCCESSIVE MATS CAN THEN BE PLACED TO CREATE 4. ROCK SHALL BE REAPPLIED OR REGRADED AS NECESSARY TO THE STABILIZED
e
THE FODS TRACKOUT CONTROL SYSTEM REPEATING THE ENTRANCE/EXIT TO MAINTAIN A CONSISTENT CEPTH.
ABOVE STEPS.
RUNOFF _ -_ _ _ USE AND MAINTENANCE SEDIMENT TRACKED ONTO PAVED ROADS IS TO BE REMOVED THROUGHOUT THE DAY AND
_ _I I-I I I_
I 1 I-I I I I 1. VEHICLES SHOULD TRAVEL DOWN THE LENGTH OF THE AT THE END OF THE DAY BY SHOVELING OR SWEEPING, SEDIMENT MAY NOT BE WASHER
1=1 I=I I-I TRACKOUT CONTROL SYSTEM AND NOT CUT ACROSS THE GOWN STORM SEWER DRAINS,
MATS. MANY JURISDICTIONS HAVE BMP DETAILS THAT VARY FROM 'UDFCD STANDARD DETAILS.
I I III III III III III I III-III I I 2, oI�IVirRs SHOULD TURN THE WHEEL OF THEIR ��
-III-III-1 I-1 III 11I-1 I I -1I-I 1- VEHICLES SUGI•I TafATTIiE VEl'ICLE YVILL MAKE A SI�ALLOVV CONSULT WITH LOCAL JURISDiCTiONS AS TO WHICH DETAIL SHOULD BE USED WHEN
I- I- = -I - - - I=1 - S•TURN ROUTE DOWN THE LENGTH IMF THE FODS TRACKOUT DIFFERENCES ARE NOTED
-III III-' 11 I_I I-III l i lI -I I(-
CONTROL SYSTEM
I-III 1=11I-1I1= (DETAILS AWrED a tOW CON OF BROOMFIELD. COLORADO, NOT AVALABL€ LN AUTOCiAO)
3, MATS SHOULD BE CLEANED ONCE THE VOIDS
BETWEEN THE PYRAMIDS BECOME FULL OF SEDIMENT.
WIRE SCREEN CURB INLET TYPICALLY THIS WILL NEED TO BE PERFORMED WITHIN TWO O
I� WEEKS AFTER A STORM EVENT.BRUSHING IS THE O
2 IN. X 4 IN. WOOD STUD 1 PREFERRED METHOD OF CLEANING.EITHER MANUALLY OR J
MECHANICALLY.
4. THE USE OF ICE MELT ROCK SALT,SNOW NIELT.
SECTION A-A A DE-ICER_ETC.SHOULD BE UTILIZED AS NECESSARY DURING
GENERAL NOTES: 0 THE WINTER MONrHS AND AFTER A SNOW EVEN TTO
PREVENT ICE BUILDUP.
1. INSPECT AND REPAIR FILTER AFTER EACH STORM 2. SEDIMENT AND GRAVEL SHALL BE IMMEDIATELY O z
EVENT. REMOVE SEDIMENT WHEN ONE HALF E THE REMOVED FROM TRAVELED WAY OF ROADS. ,ram REMOVAL O
SHALLFILTER DEPTH HAS BEEN AN AREA
REMOVED SEDIMENT TYPICAL ONE-LANE LAYOUT 1. REMOVAL OFFODSTRACKOUTCONTROLSYSTEMIS
SHALL BE DEPOSITED T R AREA TRIBUTARY S. A REVERSE ORDER OF INSTALLATION.
SEDIMENT BASIN OR OTHER FILTERING MEASURES. LU
". STARTING WITH THE LAST MAT,THE MAT THAT IS ( 1 Q
PLACED AT THE INNERMOST POINT OF THE SITE OR THE MAT v
CURB INLET FILTER GRAVEL FURTHEST FROM THE EXIT OR PAVED SURFACE SHOULD BE
REMOVED FIRST.
Ckycyf CITY OF APPROVED: DETAIL 3. THE ANC HORS SHOULD BE REMOVED.
FORT COLLINS 4. THE CONNECTOR STRAPS SHOULD BE UNBOLTED AT Submitted for SPAR: 03 11 2025
..} STORM WATER ALL LOCATIONS IN THE FODS TRACKOUT CONTROL SYSTEM.
�1 ���InS UTILITIES DATE: 01/05/O1 D - 2 5 _ _ VTC-6 Urban Drainage and Flood Control District Nowniber 2010 CWA4 Urban Drainage and Flood Control District Nowniber 2010
Submitted for FOP: 04 30 2025
��, FORT COLLINS, CO. CONSTRUCTION DETAILS 5. STARTING WITH THE LAST MAT IN THE SYSTEM,EACH g
(970) 221-6700 DRAWN BY: NBJ SUCCESSIVE MAT SHOULD THEN BE MOVED AND STACKED Urban Storm Drainage Criteria Manual Volume 3 Urban Mom Dminage Criteria Manual Volume 3
FOR LOADING BY FORKLIFT OR EXCAVATOR ONTO A TRUCK
FOR REN40VAL FROM THE SITE.
Revision Number I Revision Date
3493
Z ' ib
7Z00
SIC-5 Rock Sock (RS) Surface Roughening (SR) EC-1 Stockpile Management (SF) MM-2 Street Sweeping and Cleaning S-11 o zr
e � ti
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Description LL
`'�- / ' Street sweeping uses mechanical pavement -�
""'- cleaning practices to reduce sediment,
T " (MINUS) CRUSHED ROCK litter and other debris washed into storm L °"
i o
ENCLOSED IN 'MIRE MESH A 3.0 MIN sewers b runoff. This can reduce
1kj" (MINUS) CRUSHED RUCK TRACKING OR f � Y
ENCLOSED IN WiRE MESH IMPRINTING ++ pollutant loading to receiving waters and -
WIRE TIE ENDS STOCKPILE LUe N
A in some cases reduce clogging of storm ` o
y- sewers and prolong t1ie life of infiltration 00
oriented 11vfE's and reduce clogging of
outlet structures in detention 13NIPs.
# TO 6 MAX AT E
0" ON SEOROCK OR GROUND SURFACE CURBS, OTHERWISE SILL FENCE (SEE SF DETAIL FOR � r �
t3" 10" DEPENDING
INSTALLATION REQUIREMENTS) Different designs are available with typical 1 N o
HARD SURFACE, 2" N
iN SOIL SEDIMENT
EXPECTED ��� sweepers categorized as a broom and
SEDIMENT LOADS
conveyor belt sweeper,wet or dry 7Z <
M LL
ROCK SOCK SECTION ROCK SOCK PLAN �STO STOCKPILE PROTECTiON PLAN vacuum-assisted sweepers,and
YIMUM regent ra tive-ai r sweepers. The
6" MAX
1 SILT FENCE (SEE SF OETAIL FOR effectiveness of street sweeping is ANY CAP AT JOINT SHALL BE FILLED WITH AN ADEQUATE INSTALLATION REOUIREMENTS) dependent upon particle loadings in the Photograph 55C-1. tNanthly street sweeping from April iLuouYh
AMOUNT OF 1Y2" (MINUS) CRUSHED ROCK AND WRAPPED Novernber removed nearly 40,690 cubic yards of sedimenUdebris from
WITH ADDITIONAL WIRE MESH SECURED TO ENDS OF ROCK area being swept, street texture,moisture
ROCK SOCK, REINFORCED SOCK. AS AN ALTERNATIVE TO FILLING JOINTS � FURROWS 2" TO 4" DEEP conditions,parked car managenment, I�rtveT streets in 2tI09, Photo courtesy of Denver Public works. E I e V a t I o n
TYP' BETWEEN ADJOINING BOCK SOCKS WITH CRUSHED ROCK AND 2" TO WITH 5" MAXIMUM SPACING equipment o operating
7 Ltsrlditic7nS and
12'" 12"' AUDiI AL WIRE WRAPPING, RUCK SOCKS CAN BE 4'' DEEP PARALLEL TO CONTOURS
p Consulting
11 OVERLAPPED (TYPICALLY 12-INCH OVERLAP) TO ,AVOID GAPS. frequency of cleaning(Pitt et at. 2004).
SECTION A
GRADATION TABLE SR-1 . SURFACE ROUGHENING Appropriate Uses
MASS PERCENT PASSING FOR STEEP SLOPES (3.1 OR STEEPER) SP-1 . STOCKPILE PROTECTION
SIEVE SIZE SQUARE MESH SIEVES Street 5weCp11Ig iS SIT appropriate technique in urban areas where scililnent and litter accumulation on
ROCK SOCK JOINTING NO. 4 STtDCICPJLE PROTECTION, INSTALLATION NOTES streets is of concert[for aesthetic,sanitary,water quality,and air quality reasons. From a pollutant
PLAN VIEW
; loading
erspective,street
ning
nt
vc in areas where
2„ I GO SCARIFYING �_ t. LOCATION OFFSSTTCKPI� T noN cleaned is the major source ofcontaminants. These caras most
in ludelt%c ways,large comm rcial parking..
e surface to be
I " 90 - 100 TYPE 0 STOCKPILE R 0 EC
1 20 _ 55 OR TILLING -_ -` lots,and paved storage areas(Mitt et al.200 ). Where significant sediment accumulation occurs on
*" 0 - 15 2. INSTALL PERIMETER CONTROLS IN ACCORDANCE WITH THEIR RESPECTIVE DESIGN DETAILS. pervious surfaces tributary to infiltration BMPs,street sweeping may help to reduce clogging of
V„ 0 _ 5 - SiLT FENCE IS 'SHOWN IN THE STOCKPILE PROTECTION DETAIL'S; HOW1 R, OTHER TYPES OF infiltration media. In areas where construction activity is occurring,street sweeping should occur as art
rN '
PERIMETER CONTROLS INCLUDING SEQIIJENT CONTROL LOGS OR ROCK SOCKS, MAY BE g� p g p
ROCK_ SACK INSTALLATION NOTES MATCHES SPECIFICATIONS FOR NO. 4 - SUITABLE IN SOME CIRCUMSTANCES. CONSIDERATIONS FOR D€TERMINING THE APPROPRIATE of construction site stormwater management plans. Vacuuming of permeable pavement systems is also
COARSE AGGREGATE FOR CONCRETE TYPE OF PERIMETER CONTROL FOR A STOCKPILE INCLUDE WHETHER THE STOCKPILE IS Considered a basic routine maintenance practice to maintain the BMP in effective Operating condition.
1. SEE PLAN VIEW FOR: PER AASHTO M4.3, ALL ROCK SHALL BE LOCATED ON A PERV OUS OR IMPERVIOUS SURFACE, THE RELATIVE HEIGHrS OF THE
-LOCATIONS) OF ROCK SOCKS. FRACTURED FACE. ALL SIDES. PERIiuETER CONTROL AND STOCKPILE, THE AEOLITY OF THE PERIMETER CONTROL TO CONTAIN See the maintenance Chapter for more information on permeable pavement systems,. Not all sweepers are
- THE STOCKPILE WITHOUT FAILING IN THE EVENT THAT MATERIAL FROM THE STOCKPILE SHIFTS appropriate for this application.
2. CRUSHED ROCK SHALL BE 112"' (MINUS) IN SIZE WITH A FRACTURED FACE (ALL SIDES) OR 'SLUMPS AGAINST THE PERIMETER, AND OTHER FACTORS. I n
AND SHALL COMPLY WITH GRADATION SHOWN ON THIS SHEET (IYI" MINUS). � � � 3 STABILIZE THE STOCKPILE SURFACE VATHI SUWACE ROUGHENING, TEMPORARY SEEDING AND Practice` Guidelines l I - •
3. WIRE MESH SHALL BE FABRICATED OF 10 GAGE POULTRY MESH, OR EQUIVALENT, WITH A MULCHING, EROSION CONTROL BLANKETS, OR SOIL BINDERS. SOILS STOCKPILED FOR AN I Guidelines 1 IN
EXTEND (TYPICALLY PERIOD TYPICALLY FOP MORE THAN 60 DAYS) SHOULD BE SEEDED AND MULCHED
MAXIMUM OPENING OF ". RECOMMENDED MINIMUM ROLL WIDTH OF 48° WITH A TEMPORARY GRASS COVER ONCE THE STOCKPILE IS PLACED (TYPICALLY WiTHIN 14 1. Post struts sweeping schedules with sign and on local government websites so that cars are not 1••I
4. WIRE MESH SHALL BE SECURED USING "HOG RINGS" OR WIRE TIES AT 6" CENTERS DAYS). USE OF MULCH ONLY OR A SOIL BINDER IS ACCEPTABLE 'IF THE STOCKPILE WiLL :BE
ALONG ALL JOINTS AND AT 2" CENTERS ON ENDS OF SOCKS. } ROUGHENED ROWS SHALL ICE 4" TO 6 IN PLACE FOR A MORE LIMITED TIME PERIOD (TYPPICALLY 30-60 OAYS) parked oT1 the street during designated sweeping days. O
L 4' TO fi` DEEP WITH 6'� MAXIMUM SPACING PARALLEL
DEEP TO CONTOURS 4. FOR TEMPORARY STOCKPILES ON THE INTERIOR PORTION OF A CONSrRUCT10N SITE, WHERE Sweeping frequency p r g g p
5. SOME: MUNICIPALITIES MAY ALLOW THE USE OF FILTER FABRIC A5 AN ALTERNATIVE To WIRE 2. Swee in Ere uenc i5 dependent a local government budget,staffing,and equipment Dent availability,
MESH FOR THE 'ROCK ENCLOSURE. OTHER DOWNGRADIENT CONTROLS, INCLUDING PERIMETER CONTROL, ARE IN PLACE. STOCKPILE but month) sweeping during non-winter months is a common approach in the metro:Denver urban
SR-2. SURFACE ROUGHENING PERWETER CONTROLS MAY NOT BE REQUIRED. Y p g pp RS-1 . ROCK SOCK PERIMETER CONTROL FOR Low SLOPES (LESS THAN 3:1) O
= U
1 Practice guidelines adapted from CASQA(2003)Californ a Storrnvvater BAIP Handbook,Practice SC-70 Road and Street
Maintenance_ �
RS-2 Urban Drainage and Flood Control District November 2010 November 2010 Urban Drainage and Flood Control District SIR-3 November 2010 Urban Drainage and Flood Control District SP-3 November 2010 Urban Drainage and Flood Control District SWC-1 7
Urban Storm Drainage Criteria Manual Volume 3 Urban Storm Drainage Criteria Manual Volume 3 Urban Storm Drainage Criteria Manual Volume 3 Urban Storm Drainage'Criteria Manual Volume 3
O
J
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EC-1 Surface Roughening (SR) MM-2 Stockpile Management (SM) S-11 Street Sweeping and Cleaning U
I"1 oC
area. Consider increasing sweeping frequency based on factors such as traffic volume, land use,field O
observations of sediment and trash accumulation.,proximity to watercourses,etc. For example.
SURFACF ROUGHENING INSTALLATION NOTES ST0;I(PILF PROTECTION MAiNTENANCIF NOTES ■ Increase the sweeping frequency for streets with high pollutant loadings,especially in high traffic LL
and industrial areas. O O
1. SEE PLAN VIEW' FOR: t. INSPECT BMPs EACH WORKDAY, AND MAINTAIN THEM IN EFFECTGVE OPERATING CONDITION.
-LOCATIONS) OF SURFACE ROUGHENING. MAINTENANCE OF BMPs SHOULD BE PROACTIVE. NOT REACTIVE. INSPECT BMPs AS SOON AS
POSSIBLE (AND ALWAYS WITHIN 24 HOURS) FOLLOWING A STORM THAT CAUSES SURFACE ■ Conduct street sweeping prior to wetter seasdrrsto remove accumulated sediments.
2 SURFACE ROUGHENING SHALL BE PROVIDED PROMPTLY AFTERCOMPLETION OF FINISHED EROSION, AND PERFORM NECESSARY MAINTENANCE Q
GRADING (FOR AREAS NOT RECEIVING TOPSOIL) OR PRIOR TO TOPSOIL PLACEMENT OR ANY ■ Increase the sweeping frequency for streets in'special problem areas Such as special events,high
FORECASTED RAIN EVENT. 2, FREQUENT OBSERVATIONS AND mAINTENMCE ARE NECESSARY TO MAINTAIN BMPs IN
EFFECTIVE OPERATING CONOLTON INSPECTIONS AND CORRECTIVE MEASURES SHOULD BE litter or erosion Zones.
3 AREAS WHERE BUILDING FOUNDATIONS, PAVEMENT, OR SOD WiLL BE PLACED WITHOUT DOCUMENTED THOROUGHLY. r
DELAY IN THE CONSTRUCTION SEQUENCE, SURFACE ROUGHENING IS NOT REQUIRED. 3. Perform street cleaning during d�weather if possible.
z
3. WHERE eIMPs HAVE FAILED, REPAIR OR REPLACEMENT SHOULD BE INITIATED UPON �
4 DISTURBED SURFACES SHALL St ROUGHENED USING RIPPING OR TILLING EQUIPMENT ON DISCOVERY OF THE FAILURE. O O
THE CONTOUR OR TRACKING UP AND DOWN A SLOPE USING EQUIPMENT TREADS, 4. Avoid wet Cleaning the street,instead,utilize dry methods where possible. O
iLE PROTECTiOMAINTENANCE NOTES�racKP N DAIU
5. A FARMING DISK SHALL NOT BE USED FOR SURFACE ROUGHENING. g g p p equipment 4. iF PERIMETER PROTECTION MUST � MOVED TO ACCESS SOIL STOCKPILE, REPLACE 7. Maintain c1caT11n�,equipment In good working condition and purchase replacement e us went as U
U
^
SURFACE ROUGHENING MNNTENANCE NOTES PERIMETER CONTROLS BY THE ENO OF THE WORKDAY. needed. Old sweepers should be replaced with more technologically advanced sweepers(preferably L.L
1. INSPECT BMPs EACH WORKDAY, AND MAINTAIN THEM IN EFFECTIVE OPERATING CONDITION- 5. STOCKPILE PERIMETER CONTROLS CAN BE REMOVED ONCE ALL THE MATERIAL FROM THE regeiieratilv'e air sweepers)that maxiillize pollutant removal, ^
MAINTENANCE OF BMPs SHOULD BE PROACTIVE. NOT REACTIVE. INSPECT EMP9 AS SOON AS STOCKPILE HAS BEEN USED.
POSSIBLE (AND ALWAYS WITHIN 24 HOURS) FOLLOWING A STORM THAT CAUSES SURFACE 6. Operate sweepers at manufacturer recommended[optimal speed levels to increase effectiveness,
EROSION, AND PERFORM NECESSARY MAINTENANCE. (Wr4l.5 AMM"M rxaM PAW", C"IIAa0, NOT AVALAI LE IN MM)CAD) >_
2. FREQUENT OBSERVATIONS AND MAINTENANCE ARE NECESSARY TO MAINTAIN BMPs IN NOJLE MANY JURISDICTIONS HAVE 13MP [DETAILS THAT VARY FROM UDFCD STANDARD DEtAIL.S. 7. Regularly inspect vehicles and equipment for leaks and repair promptly. � Q
EFFECTIVE OPERATING CONDITION INSPECTIONS AND CORRECTIVE MEASURES SHOULD BE CONSULT WITH LOCAL JURISDICTIONS AS TO WHICH DETAIL SHOULD 13E USED WHEN
DOCUMENTED THOROUGHLY. DIFFERENCES ARE NOTED
8, Keep accurate logs of the number of curb-miles swept and the amount of waste collected. r ^
3. WHERE BMPs HAVE FAILED, REPAIR OR REPLACE UPON DISCOVERY OF THE FAILURE. V 1
4. VEHICLES AND EQUIPMENT SHALL NOT BE DRIVEN OVER .AREAS THAT HAVE BEEN SURFACE 9. Dispose of street sweeping debris and dirt at a landfill.
ROUGHENED.
10. DID not store swept material along the side of the street or near a storm drain inlet. N
5. IN NON-TURF GRASS FINISHED AREAS, 'SEEDING AND MULCHING SH
ALL TAKE GLACE CO
DIRECTLY
�R SURFACE
SR�NECESSARY TO MAINTAIN GROOVE DE WITHOUT PTH AND
OUT THE SURFACE.
6. IN AREAS NOT SEEDED AND MULCHED AFTER SURFACE ROUGHENING, SURFACES SHALL BE Changes in Street.Sweeper Technology(Source: Center for Watershed Protection 2002) � � � �
R N R M N SMOOTH OVER RILL
EROSION,
At one time,street sweepers were thought to have great potential to remove stormwater pollutants lrom
(DETAILS A17APTE0 FROM TOWN OF PARKER. COLORADO. NOT AVA144aLE IN AUT4C.AO�) urban street surfaces and were widely touted as a strarnlwater treatment practice;in inany communities.
NOTE: MANY JURISDICTIONS HAVE $MP DETAILS THAT VARY FROM UDFCO STANDARD Da mL5. StIcet sweeping gradually fell out of favor,largely as a result of pertomlance monitoring conducted as
CONSULT WITH LOCAL JURISDICTION'S AS TO WHICH DETAIL SHOULD BE USED WHEN part of the National Urban Runoff Program(NURP). These studies,generally concluded that street
DIFFERENCES ARE NOTEDr
sweepers were not very effective in reducing pollutant loads(USEPA, 1983). The primary reason for
the mediocre performance was that mechanical sweepers of that era were unable to pick up fine-grained
sediment particles that carry a substantial portion of the storrnwater pollutant load. In addition,the
performance ofsweepers is constrained by that portion of a street's ston-nwater pollutant load delivered
from outside street pavements(e.g.,pollutants that wash onto,the street from adjacent areas or are 7 J
directly deposited on the:,street by rainfall). Street sweeping technology,however,has evolved Z r ^
considerably since the days of the.l�LAP Lesting. Today,communities have a choice in three basic O O 0 J
sweeping technologies.to clean their urban streets: traditional.mechanical sweepers that utilize a bTOorn 0
and conveyor beet,vacuum-assisted sweepers, and regenerative air sweepers(fl-iose that blast air onto r ^ H
the pavement to loosen sediment particles and vacuum them into a hopper). V l Q
For more information,see O
http.Ilwww.cwp.orbz,'Resotirce_Libraj�:/Center Doct;ll"WP/ELC_I1WI1121.pdf 10� O UJ
w U 0
Submitted for SPAR: 03 11 2025
SR 4 Urban Drainage and Floyd Control District November 2010 SP-4 Urban Drainage and Flood Control District November 2010 SWC-2 Urban Drainage and.Flood Control District November 2010 Submitted for FDP: 04 30 2025
Urban Storm Drainage Criteria Manual Volume 3 Urban Storm Drainage Criteria Manual Volume 3 Urban Stonn Drainage Criteria Manual Volume 3
Revision Number I Revision Date
3493
Z zr m
00 u7
Stabilized Staging Area (SSA) S -6 SM-3 Construction Fence (CF) � o
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SF/CF SFfC:F77 F LL
SSA or—Cr —cr PLASTIC CAP, TYF C F
n -CNSLT'E
CONSTRUCTION 4 CONSTRUCTION _
VEHIiCEE TRAILERS o
PARKING (IFS i x o
NEE ). � ,L Ln
CONSTRUCTION � � � � N �
SITE ACCESS U STUDDED STEEL Ln
n TEE POST
o
1GIATERIAL'- 3" MIN: THICKNESS U d o
GRANULAR MATERIAL
� U
N
STORAGE
STABILIZED AREA .�
CONSTRLICTI ON t
ENTRANCE (SEE to CONSTRRUCCTION ENE CA
CA o
DETAILS VTC-I EXISTINGU
OR APPROVED EQUAL 7Z <
TO VTC-3) 7 SILT FENCE OR CONSTRUCTION GRADE
SF/CF - SF/CF FENCING AS NEEQED
EXISTING ROADWAY
SSA- 1 . STABILIZED STAGING AREA
Elevation
STABILIZED STAGING AREA INSTALLATION NOTES - -�"
IO' MAX- _
Consulting
1. SEE PLAN VIEW FOR SPACING
LOCATION OF STAGING AREA(S).
-CONTRACTOR MAY ADJUST LOCATION AND SIZE OF STAGING AREA WITH APPROVAL
FROM THE LOCAL JURISDICTION
2. STABILIZED STAGNG AREA SHOULD BE APPROPRIATE FOR THE NEEDS OF THE SITE. 1
OVERSIIING RESULTS IN A LARGER AREA TO STABILIZE FOLLOWING CONSTRUCTION. STUDDED STEEL
TEE POST
3. STAGING AREA SMALL BE STABILIZED PRIOR TO OTHER OPERATIONS ON THE SITE.
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4. TH'E STABILIZED STAGING AREA SHALL CONSIST OF A MINIMUM 3" THICK GRANULAR �-
MATERIAL.
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S. UNLESS OTHERWISE SPECIFIED BY LOCAL JURISDICTION, ROCK SHALL CONSIST OF DOT
SECT. #703, AASHTO #3 COARSE AGGREGATE OR 6- (MINUS) ROCK.
FENCE AND�CONSTRUCTONBFENCING BE REQUIRED INCLUDING BUT NOT LIMITED TO SILr CE- 1. . PLASTIC MESH CONSTRUCTION FENCE
STABILIZED STRONG AREA MAINTENANCE NOTES CONSTRUCTION FENCE INSTALLATION NOTES
I. INSPECT BMPS EACH WORKDAY, AND MAINTAIN THEM IN EFFECTIVE OPERATING CONDITION. 1. SEE PLAN VIEW FOR:
MAINTENANCE OF BMPS SHOULD BE PROACTIVE, NOT REACTIVE, INSPECT BMPs AS SOON AS -LOCATION OF CONSTRUCTION FENCE Ln
POSSIBLE (AND ALWAYS WITHIN 24 HOURS) FOLLOWING A STORM THAT CAUSES SURFACE
EROSION, AND PERFORM NECESSARY MAINTENANCE, 2. CONSTRUCTION FENCE SHOWN SHALL BE INSTALLED PRIOR TO ANY LAND OISTUR8INO N
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2. FREdDUENT 08SERVATICNS ANO ,AINTENANCE ARE NECESSARY TO MAINTAIN BNIPS IN ACTIVITIES u
EFFECTIVE OPERATING CONDITION INSPECTIONS AND CORRECTIVE MEASURES SHOULD BE 3. CONSTRUCTION FENCE SHALL BE COMPOSED OF ORANGE. CONTRACTOR--GRADE MATERIAL O
DOCUMENTED THOROUGHLY. THAT IS AT LEAST 4' HIGH. METAL POSTS SHOULD HAVE A PLASTIC CAP FOR SAFETY.
3. WHERE SMPs HAVE FAILED. REPAIR OR REPLACEMENT SHOULD M INITIATED UPON 4 STUDDED STEEL TEE POSTS SHALL BE UTILIZED TO SUPPORT THE CONSTRUCTION FENCE 00
DISCOVERY OF THE FAILURE MAXIMUM SPACING FOR STEEL TEE POSTS SHALL BE 10'.
4. ROCK SHALL BE REAPPLIED OR DEGRADED AS NECESSARY IF RUTTING OCCURS OR 5 CONSTRUCTION FENCE SHALL BE SECURELY FASTENED TO THE TOP, MIDDLE, AND � O
UNDERLYING SUBGRADE BECOMES EKPOS€D BOTTOM OF EACH POST.
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November 2010 Urban Drainage and Flood.Control District SSA-3 CF-2 Urban Drainage and Flood Control District November 2010 ul
2!Urban Storm Drainage Criteria Manual Volume 3 Urban Storms Drainage Criteria Manual Volume 3 O I!
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SM-6 Stabilized Staging Area (SSA) Constriction Fence (CF) SM-3 D U
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rABI 17EI1 STALPNC. AREA MAINTENANCE NOTE CONSMCTTON FENCE MNNTENANCF NPTEC_ O O
5, STABILIZED STAGING AREA SHALL BE ENLARGLLI II NECESSARY TO CONTAIN PARKING, 1. INSPECT BMPS EACH WORKDAY, AND MAINTAJN THEM IN EFFECTIVE OPERATING CONDITION. •
STORAGE. AND VNLOADINGAOAOING OPERATIONS. MAINTENANCE OF BMP9 SHOULD BE PROACTIVE, NOT REACTIVE. INSPECT BMPS AS 'SOON AS LLLNLLL
POSSIBLE (AND ALWAYS WITHIN 24 HOURS) FOLLOWING A STORM THAT CAUSES SURFACE
6 THE STABILIZED STAGING AREA SHALL BE REMOVED AT THE END OF CONSTRUCTION THE EROSION., AND PERFORM NECESSARY MAINTENANCE p
GRANULAR MATERIAL SHALL BE REMOVED OR, IF APPROVED BY THE LOCAL JURISDICTION,
USED ON SITE, AND THE AREA COVERED WITH TOPSOIL, SEEDED AND MULCHED OR 2, FREQUENT OBSERVATIONS AND MAINTENANCE ARE NECESSARY TO MAINTAIN BMPS IN
OTHERWISE STABILIZED IN A MANNER APPROVED BY LOCAL JURISDICTION EFFECTIVE OPERATING CONDITION INSPECTIONS AND CORRECTIVE MEASURES SHOULD BE
NOTE, MANY MUNICIPALITIES PROHIBIT THE USE OF RECYCLED CONCRETE AS GRANULAR DOCUMENTED THOROUGHLY. z
MATERIAL FOR STABILIZED STAGING AREAS DUE TO DIFFICULTIES WITH RE-ESTABLISHMENT oF 3, WHERE BMPn HAVE FAILED, REPAIR OR REPLACEMENT SHOULD BE INITIATED UPON O O
VEGETATION IN AREAS WHERE RECYCLED CONCRETE WAS PLACED. DISCOVERY OF THE FAILURE
NOTE- MANY JURISDICTIONS HAVE BMP DETAIL'S THAT VARY FROM UDFCD STANDARD DETAILS. 4. CONSTRUCTION FENCE SHALL BE REPAIRED OR REPLACED WHEN THERE ARE SIGNS OF O
CONSULT WITH LOCAL JURISDICTIONS AS TO WHICH DETAIL SHOULD BE USED WHEN DAMAGE SUCH AS RIPS OR SAGS. CONSTRUCTION FENCE IS TO REMAIN IN PLACE UNTIL THE
DIFFERENCES ARE NOTED. UPSTREAM DISTURBED AREA IS STABILIZED AND APPROVED BY THE LOCAL JURISDICTION. U U
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(DEWLS An*rco rRou oaum-as couNTY, coLoRAw. Nor AVMlA IN AUTOCAUD 5. WHEN CONSTRUCTION FENCES ARE. REMOVER, ALL DISTURBED AREAS ASSOCIATED WITS! THE L.L
INSTALLATION, MANTENANCE. AND/OR REMOVAL OF Tt1E FENCE SHALL BE COVERED WITH
TOPSOIL. SEEDED AND MULCHED. OR OTHERWISE STABIUZED AS APPROVED BY LOCAL
JURISDICTION.
NOTE: MANY JURISDICTIONS HAVE EIMP DETAILS THAT VARY FROM UDFCO STANDARD OETAILS
CONSULT WITH LOCA1. JURISDICTIONS AS TO WHICH DETAIL SHOULD BE USED WHEN
DIFFERENCES ARE NOTED.
(DETAR- ASAZ RM FROM TOWN Of PARKER, CMOR►DD[ NDT AVAII� IN ALrTOCA1D)
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Submitted for SPAR: 03 11 2025
SSA-4 Urban Drainage and Floods Control District Novembcr 2010 November 2010 Urban Drainage and Flood Control District CF-3 Submitted for FDP: 04 30 2025
Urban Storm Drainage Criteria Manual Volume 3 Urban Storm Drainage Criteria Manual Volume 3
revision ivurlioer V�evis,wn Date
3493