HomeMy WebLinkAboutFAIRWAY APARTMENTS - FDP210023 - SUBMITTAL DOCUMENTS - ROUND 3 - EROSION CONTROL LETTER/REPORT
Erosion Control Report
Fairway Lane Apartments
Fort Collins, Colorado
Date Submitted: December 15, 2021
Owner/Applicant:
Fairway Apartments, LLC
1603 Oakridge Drive, Suite 101
Fort Collins, Colorado 80525
Jeff Jensen
970-227-0622
jeff@jensenlaplante.com
Developer:
Jensen LaPlante Development
1603 Oakridge Drive, Suite 101
Fort Collins, Colorado 80525
Jeff Jensen
970-227-0622
jeff@jensenlaplante.com
Contractor:
TBD
Design Engineer:
Sanderson Stewart
425 West Mulberry, Suite 201
Fort Collins, CO 80526
Charles Sonnier
(970) 488-0169
csonnier@sandersonstewart.com
Erosion Control Administrator:
TBD
2
CERTIFICATION STATEMENT:
I hereby certify that this Erosion Control Report for the Fairway Lane Apartments, Fort Collins,
Colorado was prepared by me (or under my direct supervision) in accordance with the provisions
of the City of Fort Collins Stormwater Criteria for the owners thereof.
_______________________________________________
Charles Joseph Sonnier, Registered Professional Engineer
State of Colorado Registration No. 48403
12/15/21
3
Table of Contents
I. Project Description and Nature of Construction
II. Potential Pollutant Sources
III. Control Measures
IV. Installation and Removal Sequence of Control Measures
V. Maintenance and Inspection of Requirements
VI. Final Vegetation and Stability
Sanderson Stewart October 2021
Fairway Lane Apartments pg. 1
Project No. 20065
I. Project Description and Nature of Construction
The proposed development is approximately 11 acres located at the northwest corner of
the South College Avenue and West Fairway Lane intersection. The project site
associated with this report encompasses existing Parcel Nos. 9602100006, 9602100012,
9602100015, and 9602109002. More specifically, the project site lies within the northeast
corner of Section 3, Township 6 North, Range 69 West, latitude 40.5188, longitude -
104.5.0785. The site is generally bounded by the Fort Collins South Transit Center/Fossil
Boulevard on the west, the Spradley Barr Ford car dealership on the north, College
Avenue on the east and Fairway Lane on the south. Surrounding properties include: the
Spradley Barr Ford car dealership adjacent to the property on the north side, Woodley’s
Fine Furniture, Worldpac, and Florida Tile on the south side of Fairway Lane Road, and
VCA Fort Collins Animal Hospital, and Fossil Ridge Animal Hospital east of South College
Avenue. The existing project site is undeveloped and has several mature trees with the
ground cover consisting of small shrubs and grasses.
The site is mostly flat to minimally sloped. Generally, runoff from the site sheet flows to the
east and south to the existing detention pond, travels through an existing 15” RCP pipe to
a water quality facility on the Woodley’s property south of Fairway Lane. The flow is then
conveyed through a curb chase onto College Avenue where it is picked up by curb inlets
approximately 700 feet south and 1400 feet south of the Woodley’s property, and
ultimately discharges into Fossil Creek. Flow then conveys southeast approximately 2.5
miles to the Fossil Creek Reservoir and then another 0.5 miles from the Fossil Creek
Reservoir Outlet to the Cache La Poudre River.
This project site sits within the FEMA Zone X, Area of Minimal flood Hazard, per FEMA
FIRM Maps 08069C1000F, dated December 19, 2006.
According to the NRCS website, the site consists of primarily Nunn clay loam, 1 to 3
percent slopes, and Fort Collins loam, 0 to 3 percent slopes, both classified as Type C
soils. The soils have an erodibility factor of 0.28 to 0.43 which suggests a moderate
susceptibility to sheet and rill erosion by runoff.
Currently, the Site consists of approximately 905 vegetative ground cover with mostly
short grass with areas of longer grasses. There are many trees on the site with most tree
clusters toward the south end of the property. Very little existing impervious areas exist
within the project limits mainly consisting of sidewalks that run parallel to adjacent streets.
Groundwater depth was measured approximately 15 feet to 22 feet below existing ground.
No known ground contamination is present, and no known riparian or sensitive areas are
proximate to the project site.
The proposed project will consist of eight new multi-family buildings, five garages, and one
clubhouse. Proposed utility improvements will consist of storm sewer, sanitary sewer, and
waterline improvements. Surface improvements will include driveway, parking lot,
landscaped areas and concrete sidewalk surrounding the buildings. Off-site improvements
will mainly consist of a sidewalk, a driveway connection, and an emergency access
Sanderson Stewart October 2021
Fairway Lane Apartments pg. 2
Project No. 20065
connection on the north side of the site connecting to the adjacent property. Refer to
Appendix A for Site Plan.
Approximately 10.5 acres of the site is anticipated to be disturbed. A summary of these
areas is as follows:
• Total Project Area: ±11.0 Acres
• Total Area of Disturbance: ±10.5 Acres
• Total Area of Staging/Storage: ±0.30 Acres
• Total Areas for Hauling: N/A
A proposed access from West Fairway Lane will be utilized as the main construction
access. BMPs will be established prior to construction. Silt fencing will be installed around
the construction limits which will remain in place until site is stabilized, and 70% ground
cover is established.
No known environmental impacts to wetland, streams and/or endangered species will
occur during this project. Dewatering operations are not anticipated for this project. If,
however, dewatering is required, State discharge permits will need to be obtained prior to
performing any dewatering operations.
II. Potential Pollutant Sources
The following is a list of potential sources of pollutants and the associated prescribed
control measures:
1. ALL DISTURBED AND STORED SOILS
Yes - Approximately 10.5 acres are anticipated to be disturbed. Topsoil will be
stripped and stockpiled in a few areas throughout the project site, as/if
necessary. Some excavated soils may also be temporarily stockpiled within the
site area as grading operations progress. Appropriate BMP measures, such as
silt fencing, sediment control logs, inlet protection, sod, and seeding and mulch
will be implemented to contain pollutants and stabilize disturbed and stockpile
areas.
2. VEHICLE TRACKING OF SEDIMENTS
Yes - Sediment tracked onto existing pavements will receive ongoing sweeping
and/or scraping and collected for haul off. Equipment that requires washing will
either be washed inside the property or be loaded directly onto a trailer and
washed off-site. Vehicle tracking control will be implemented to help reduce
erosion and to minimize sediment from entering adjacent streets. Rock socks
and inlet protection shall be installed downstream of the project site to intercept
and filter any pollutants prior to escaping the site.
Sanderson Stewart October 2021
Fairway Lane Apartments pg. 3
Project No. 20065
3. MANAGEMENT OF CONTAMINATED SOILS
No - There are no contaminated soils anticipated on this site.
4. LOADING & UNLOADING OPERATIONS
Yes - Workers will have sufficient parking within the project site and along
adjacent streets. Equipment may be loaded and unloaded on-site to reduce
soil transport off the site. Any loading of material will be done directly from the
machine to the haul truck with appropriate containment BMP’s and clean up
measures in place.
5. OUTDOOR STORAGE OF CONSTRUCTION MATERIALS, BUILDING
MATERIALS, FERTILIZERS AND CHEMICALS
Yes/Possibly - Although fertilizers may be used in the final stage of the project
for stabilizing vegetation, they will not be stored onsite. Materials that are not
anticipated to generate pollutants along with on-site construction vehicles will
be stored/parked in a Stabilized Staging Areas located within the project site.
6. BULK STORAGE OF MATERIALS
No - There are no bulk liquid chemicals or storage structures anticipated for
this project.
7. VEHICLE AND EQUIPMENT MAINTENANCE AND FUELING
Yes/Possibly - It is the intention that most, if not all, equipment requiring repair
shall be loaded onto a trailer and repaired off-site in a proper facility. If
necessary, all on-site equipment repair shall be performed within the Stabilized
Storage Area where potential chemical discharge will be contained and hauled
off.
8. SIGNIFICANT DUST OR PARTICULATE GENERATION PROCESSES
- Yes - This project is not anticipated to generate much atmospheric pollution,
however, water trucks will be utilized, as needed, and vehicle speeds will be
limited to minimize dust emissions. Seeding/sodding of the disturbed area shall
be implemented upon completion of the improvements to that area. If needed,
water can be applied, and silt fence shall be installed as a wind break. The
project will follow all requirements described in the Fugitive Dust Control
Ordinance No. 004, 2016, Section 12-150 through 12-160.
Sanderson Stewart October 2021
Fairway Lane Apartments pg. 4
Project No. 20065
9. ROUTINE MAINTENANCE ACTIVITIES INVOLVING FERILIZERS,
PESTICIDES, DETERGENTS, FUELS, SOLVENTS, OILS, ETC.
Yes/Possibly - No routine maintenance is anticipated. If it’s needed, however, it
is the intention that equipment shall be maintained off-site in a proper facility.
Any emergency on-site equipment maintenance shall be performed within the
Stabilized Storage Areas within the project site. Although the other referenced
chemicals may be used during the project, they will not be stored onsite.
10. ON-SITE WASTE MANAGEMENT PRACTICES
Yes - Any solid waste disposal will be collected and hauled off-site daily. Any
waste types to be disposed of at the end of each day will be temporarily stored
within the Stabilized Storage Areas within the project site.
11. CONCRETE TRUCK/EQUIPMENT WASHING
Yes – A concrete washout area is located near the construction access and
appropriate containment BMP’s and clean up measures will be utilized.
12. DEDICATED ASPHALT AND CONCRETE BATCH PLANTS
No dedicated batch plants are proposed.
13. NON-INDUSTRIAL WASTE SOURCES
Yes - A portable toilet will be utilized for non-industrial waste on-site. These
receptacles will be located a minimum of 50 feet from any inlet structure and
watercourse. Generated worker trash will be collected and transported off-site
daily.
14. SAW CUTTING AND GRINDING
Yes - Saw cutting of existing asphalt and concrete sidewalks throughout the
project area will occur. Appropriate downstream BMPs along curb lines and inlet
protection will be implemented along with street sweeping.
15. OTHER NON-STORMWATER DISCHARGES
No - No other discharges, such as dewatering and/or wash water is anticipated
for this project.
16. OTHER POTENTIAL SPILL SOURCES
No - No other procedures or areas of potential spill sources are anticipated.
Sanderson Stewart October 2021
Fairway Lane Apartments pg. 5
Project No. 20065
III. Control Measures
Installation and maintenance of temporary construction and permanent BMPs
(structural and non-structural) shall be performed in accordance with the detail
specification shown on the Erosion Control Detail Sheets in the Fairway Lane
Apartments Utility Plan Set and the specifications contained within the Urban Storm
Drainage Criteria Manual, Volume 3, Chapter 6 & 7.
Structural Practices:
1. Silt Fencing – Silt fencing will be utilized as part of perimeter controls to
prevent sediment from leaving the project site. Silt fencing will be used
downgradient of grading operations and along West Fairway Lane and
South College Avenue.
2. Rock/curb Socks – Rock socks shall be installed along new curb/gutter
and valley gutters within the project site. Rock socks will also be
installed along the existing curb/gutter within the adjacent streets and
parking lot.
3. Sediment Control Log – Sediment Control Logs shall be installed along
the back of proposed sidewalks to the north and west of the proposed
detention pond area.
4. Inlet/Outlet Protection – Inlet protection shall be implemented to protect
the existing and newly installed inlets on and off site. Outlet protection
will also be utilized on the proposed outfalls within the proposed
detention pond. The intent of these BMPs is to prevent sediment from
flowing into said inlets and leaving the site.
5. Stabilized Staging Area – These BMPs will be used to contain any on-
site construction parking, portable toilet and any non-pollutant
generating materials. These will be located in a few locations within the
project site.
6. Vehicle Tracking Control – Two small vehicle tracking control pads shall
be provided at the north and south ends of the site to access the project
site. The intent of these pads is to minimize the tracking of mud and
sediment onto the adjacent paved surfaces.
7. Stockpile Management – The stockpiled material will be stabilized
through this BMP utilizing silt fencing to contain potential sediment
transport and stabilize the material through seeding and mulching.
8. Surface Roughening – Surface roughening will be performed on steeper
slopes prior to achieving stabilization through seeding and sodding.
Sanderson Stewart October 2021
Fairway Lane Apartments pg. 6
Project No. 20065
Non-Structural Practices:
1. Permanent Sod/Seeding –Permanent sod and/or seeding will be used to
re-establish vegetation within the graded areas and stabilization of the
stockpiled material. See seeding instructions below.
2. Mulch – Mulch may be used, as needed, to assist in the taking of the
seed by protecting the seedbed and stabilizing the soil by increasing
infiltration and reducing runoff. Utilize hydromulch on graded 4H:1V or
steeper slopes after seeding. Refer to Section VI of this report.
3. Street Sweeping – The adjacent streets and parking lots/drives shall be
kept free of sediment that has been tracked onto it through construction
activities. Sweeping or vacuuming should be conducted when there is
noticeable sediment accumulation on the roadway, adjacent to and
surrounding the construction site.
IV. Installation and Removal Sequence of Control Measures
The anticipated construction dates are as follows:
• Approximate Start Date: February 1, 2022
• Approximate Completion Date: December 1, 2022
• Final Stabilization Anticipated By: May 1, 2023
The following sequence of construction, land disturbing activities, and BMP
implementation are anticipated:
1. Apply for all necessary permits, as required.
2. Mobilization and perimeter erosion control installation:
a. Perimeter Silt Fencing to be installed downstream of areas to be graded.
b. Install Inlet Protection at existing receiving inlets.
c. Install Vehicle Tracking Control.
d. Install Stabilized Staging Area with Portable Toilet.
3. Obtain Building and Demolition Permits, as required.
4. Construction Staking and Earthwork:
a. Perform construction staking.
b. Perform grubbing and stripping of topsoil.
c. Install landscape boulders at north end of building.
d. Perform earthwork, grading and stockpiling.
e. Stockpile topsoil and stabilize.
5. Install Stormwater Inlets/Piping and Hardscape:
a. Install subsurface improvements.
Sanderson Stewart October 2021
Fairway Lane Apartments pg. 7
Project No. 20065
b. Install surface improvements.
c. Stabilize any excess stockpiled material.
6. Install Landscaping Improvements:
a. Install plantings, edgings, etc., as specified in landscape plan.
7. Stabilize
a. Install silt fence around stockpiled material.
b. Sod, Seed and mulch newly graded areas, stockpiled material, and
disturbed areas.
8. Removal of Temporary BMPs
a. Remove all BMPs except for the silt fencing and inlet/outlet protection.
b. Remove all remaining temporary BMPs upon achieving 70% minimum
vegetated ground cover. Re-seeding and additional mulch may be
necessary along with other methods implemented to establish vegetation
such as erosion control blanket and soil binders.
All temporary perimeter controls necessary to prevent sediment and/or pollutants from
leaving the site are to be installed prior to obtaining permits and the commencement of
construction activities.
V. Maintenance and Inspection of Requirements
BMP Inspections:
Routine and post-storm inspections of BMPs are essential to identify maintenance
necessary for the BMPs to remain in effective operating conditions. The frequency of
inspections is typically influenced by multiple factors including the weather, the phase of
construction, activities on site, and the types of BMPs.
In Colorado, the CDPS General Permit requires documented inspections on a biweekly
basis and within 24 hours of a storm event, with some limited, temporary exceptions for
inactive sites. UDFCD recommends spot-checking BMPs every workday. This is
typically reasonable to achieve and can help to ensure that the BMPs remain in good
working condition.
When the site or portions of the site are awaiting final stabilization (e.g., vegetative
cover), where construction is essentially complete, the recommended frequency of
inspection is at least once every month. Be sure that this change is documented and in
accordance with relevant permit requirements prior to reducing the inspection schedule.
Sanderson Stewart October 2021
Fairway Lane Apartments pg. 8
Project No. 20065
Maintenance:
Proactive maintenance is fundamental to effective BMP performance. Rather than
maintaining the BMP in a reactive manner following failure, provide proactive
maintenance that may help to reduce the likelihood of failure. The types and frequencies
of maintenance are BMP-specific.
Maintain BMPs so that they function as intended. This includes removing accumulated
sediment before it limits the effectiveness of the BMP. Identify needed maintenance
activities during site inspections or during general observations of site conditions. Where
BMPs have failed, repairs or changes should be initiated as soon as practical, to
minimize the discharge of pollutants.
Where the BMPs specified in the SWMP are not functioning effectively at the site,
modifications should be made that may include different or additional layers of BMPs.
When new BMPs are installed or BMPs are replaced, check the permit for
documentation requirements. This may require communication with the owner and/or
engineer and, at a minimum, should be documented in the inspection and maintenance
records (logbook).
The following is an abbreviated summary regarding inspection and maintenance for
BMPs proposed for this project (also refer to erosion control details in the construction
plans):
1. Silt Fencing – Inspect each workday and as soon as possible (always
within 24-hours) following a storm that causes surface erosion. Repair or
replacement shall occur immediately upon discovery of any failures.
Upstream accumulated sediment (at approximately 6-inches) shall be
removed, as needed to maintain the functionality of the BMP.
2. Construction Fencing – Inspect fences daily for damage and repair or
replace as necessary. Fencing should be tight and not slumping. Post
should be standing straight and secure in the ground.
3. Rock/curb Socks - Inspect each workday and as soon as possible
(always within 24-hours) following a storm that causes surface erosion.
Rock socks should be replaced if heavily soiled or damaged beyond
repair. Accumulated upstream sediment should be removed when
sediment is approximately ½ of the rock sock height.
4. Inlet Protection - Inspect each workday and as soon as possible (always
within 24-hours) following a storm that causes surface erosion.
Accumulated upstream sediment should be removed when sediment is
approximately ½ of the rock sock height in front of inlet opening.
Sanderson Stewart October 2021
Fairway Lane Apartments pg. 9
Project No. 20065
5. Staked Sediment Control Logs – Logs shall be staked along the back of
the installed curb to help prevent sediment from running off the disturbed
ground onto the paved roads and gutters. Sediment buildup shall be
removed as needed. Sediment logs will be replaced and reinstalled to
maintain their effectiveness.
6. Stabilized Staging Area – Inspect each workday and as soon as
possible (always within 24-hours) following a storm that causes surface
erosion. Maintain them in effective operating condition with a stable
surface cover of gravel, repair perimeter silt fence as necessary and
follow good housekeeping practices. Rock shall be reapplied or
regraded as necessary if rutting or underlying subgrade becomes
exposed.
7. Vehicle Tracking Control – Inspect each workday and as soon as
possible (always within 24-hours) following a storm that causes surface
erosion. Rock shall be reapplied or regraded as necessary to maintain a
consistent depth.
8. Concrete Washout Area – The washout area shall be installed before
concrete placement begin. Signage shall be posted that clearly
designates the washout area. Concrete waste shall be removed and
disposed of as needed.
9. Stockpile Management – Inspect each workday and as soon as possible
(always within 24-hours) following a storm that causes surface erosion.
Repair perimeter silt fence as necessary. If perimeter protection needs
to be removed to access stockpile, replace perimeter controls by end of
workday.
VI. Final Vegetation and Stability
Usable stripped topsoil will be re-distributed over the exposed dirt in areas where fill was
removed and areas of grading. Areas to receive seeding and mulching per the seeding
instructions below shall be the following:
• Exposed ground where construction activities are completed.
• Stockpiled material for 60 days or more.
• Other disturbed bare ground areas such as in the removed Stabilized Staging
Area and areas that received construction traffic and general operations.
• Proposed planting per the landscape plans is anticipated to take place between
Fall 2022 and Spring 2023.
Refer to the Final Stabilization and Project Completion notes on Sheet No. 2 of the
construction plans associated with this report.
Sanderson Stewart October 2021
Fairway Lane Apartments pg. 10
Project No. 20065
Seeding Instructions:
Per the City of Fort Collins Land Use Code, Section 12-132, Soil shall be thoroughly
loosened to a depth of not less than eight (8) inches and soil amendment shall be
thoroughly incorporated into the soil to a depth of at least six (6) inches by tilling,
discing, or other suitable method, at a rate of at least three (3) cubic yards of soil
amendment per one thousand (1,000) square feet of area to be seeded, unless at
least four (4) inches of loose top soil has been placed on the area after completion of
construction activity on top of not less than four (4) inches of loosened subgrade
soils. Seed shall be applied to a depth of ¼” to ½” and conform to the standards
outlined in the seeding notes and details on Sheet Nos. 2 and 4 of the construction
plans associated with this report.
Seeded areas to be mulched and crimped per Note No. 55 of the Erosion Control
Notes found in the final construction plans associated with this report. Crimped
mulch shall be applied to a depth of 2” to 3”. Utilize hydromulch application on
graded 4H:1V or steeper slopes after seeding.
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 and any temporary
Control Measures will be removed.
References
1. City of Fort Collins, December 2018, Fort Collins Stormwater Criteria Manual.
2. City of Fort Collins, December 2019, Fort Collins City Land Use Code.
3. Mile High Flood District, 2001 (November 2010 with some sections updated April 2018),
Urban Storm Drainage Criteria Manual, Volume 3, Stormwater Quality.
4. United States Department of Agriculture Natural Resources Conservation Service; Web Soil
Survey; accessed on-line September 2019.
APPENDIX
1. NRCS Soils Data
2. Erosion Control Plan
3. Erosion Control Notes
4. Erosion Control Details
5. Erosion Control Security Estimate
Fairway Lane Apartments
Fort Collins, Colorado
APPENDIX
9
Custom Soil Resource Report
Soil Map
448516044852004485240448528044853204485360448540044854404485480448516044852004485240448528044853204485360448540044854404485480493240 493280 493320 493360 493400 493440 493480
493240 493280 493320 493360 493400 493440 493480
40° 31' 12'' N 105° 4' 47'' W40° 31' 12'' N105° 4' 36'' W40° 31' 1'' N
105° 4' 47'' W40° 31' 1'' N
105° 4' 36'' WN
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84
0 50 100 200 300
Feet
0 20 40 80 120
Meters
Map Scale: 1:1,650 if printed on A portrait (8.5" x 11") sheet.
Soil Map may not be valid at this scale.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Larimer County Area, Colorado
Survey Area Data: Version 15, Jun 9, 2020
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Aug 11, 2018—Aug
12, 2018
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
Custom Soil Resource Report
10
Table—Hydrologic Soil Group
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
35 Fort Collins loam, 0 to 3
percent slopes
C 3.4 26.8%
74 Nunn clay loam, 1 to 3
percent slopes
C 9.4 73.2%
Totals for Area of Interest 12.9 100.0%
Rating Options—Hydrologic Soil Group
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Custom Soil Resource Report
23
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.
Physical Soil Properties---Larimer County Area, Colorado
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
9/6/2021
Page 1 of 5
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.
Physical Soil Properties---Larimer County Area, Colorado
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
9/6/2021
Page 2 of 5
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)
Physical Soil Properties---Larimer County Area, Colorado
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
9/6/2021
Page 3 of 5
Report—Physical Soil Properties
Three values are provided to identify the expected Low (L), Representative Value (R), and High (H).
Physical Soil Properties–Larimer County Area, Colorado
Map symbol
and soil name
Depth Sand Silt Clay Moist
bulk
density
Saturated
hydraulic
conductivity
Available
water
capacity
Linear
extensibility
Organic
matter
Erosion
factors
Wind
erodibility
group
Wind
erodibility
index
Kw Kf T
In Pct Pct Pct g/cc micro m/sec In/In Pct Pct
35—Fort
Collins loam,
0 to 3 percent
slopes
Fort collins 0-4 36-43- 50 28-38- 48 16-19- 26 1.44-1.47
-1.50
4.23-28.23-42.3
4
0.15-0.15-0.
17
1.7- 2.0- 3.7 1.0- 1.5-
2.0
.43 .43 5 5 56
4-9 30-42- 45 20-26- 50 20-32- 35 1.45-1.49
-1.53
1.41-2.82-14.11 0.15-0.16-0.
17
2.1- 5.0- 5.7 0.5- 0.8-
1.0
.32 .32
9-16 30-42- 45 20-26- 50 20-32- 35 1.45-1.49
-1.53
1.41-2.82-14.11 0.15-0.16-0.
17
1.8- 4.6- 5.5 0.5- 0.8-
1.0
.32 .32
16-29 35-42- 45 25-37- 38 20-21- 30 1.49-1.50
-1.51
1.41-9.17-14.11 0.15-0.15-0.
17
0.8- 1.3- 3.6 0.0- 0.3-
0.5
.43 .43
29-80 35-42- 45 25-37- 38 20-21- 30 1.49-1.50
-1.51
1.41-9.17-14.11 0.15-0.15-0.
17
0.8- 1.3- 3.6 0.0- 0.3-
0.5
.43 .43
Physical Soil Properties---Larimer County Area, Colorado
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
9/6/2021
Page 4 of 5
Physical Soil Properties–Larimer County Area, Colorado
Map symbol
and soil name
Depth Sand Silt Clay Moist
bulk
density
Saturated
hydraulic
conductivity
Available
water
capacity
Linear
extensibility
Organic
matter
Erosion
factors
Wind
erodibility
group
Wind
erodibility
index
Kw Kf T
In Pct Pct Pct g/cc micro m/sec In/In Pct Pct
74—Nunn clay
loam, 1 to 3
percent
slopes
Nunn 0-9 36-43- 45 17-26- 37 27-31- 38 1.39-1.41
-1.43
0.42-2.82-4.23 0.16-0.16-0.
17
3.3- 4.3- 6.8 1.0- 1.5-
2.0
.28 .28 5 6 48
9-13 25-32- 39 16-30- 40 35-38- 45 1.32-1.37
-1.42
0.42-0.92-1.41 0.14-0.16-0.
16
5.8- 6.6- 8.4 1.0- 1.5-
2.0
.28 .28
13-25 25-32- 39 16-30- 40 35-38- 45 1.43-1.46
-1.48
0.42-0.92-1.41 0.14-0.16-0.
16
5.6- 6.2- 8.2 0.5- 0.8-
1.0
.32 .32
25-38 35-41- 65 2-30- 45 20-29- 33 1.42-1.49
-1.56
1.41-2.82-14.11 0.12-0.17-0.
17
1.8- 3.5- 4.4 0.0- 0.3-
0.9
.37 .37
38-80 37-41- 65 2-29- 48 15-30- 33 1.44-1.50
-1.56
1.41-2.82-42.34 0.10-0.17-0.
17
1.1- 3.7- 4.5 0.0- 0.3-
0.9
.32 .32
Data Source Information
Soil Survey Area: Larimer County Area, Colorado
Survey Area Data: Version 15, Jun 9, 2020
Physical Soil Properties---Larimer County Area, Colorado
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
9/6/2021
Page 5 of 5
DOG
PARK
BLDG
7
BLDG
5
BLDG
6
BLDG
4
BLDG
3
BLDG
2
BLDG
8
BLDG
1LOT 1SOUTH TRANSIT CENTER SUBDIVISIONLOT 1
SPRADLEY BARR FORD SUBDIVISION
LOT 1
WEBERG, P.U.D.FOSSIL BLVDWEST FAIRWAY LANE SOUTH COLLEGE AVENUE (SH 287)0 50
SCALE: 1" = 50'
1002550 FINAL DEVELOPMENT PLANNORTH
NOTE:
-EXISTING UNDERGROUND INSTALLATIONS & PRIVATE UTILITIES SHOWN ARE INDICATED ACCORDING TO THE BEST INFORMATION AVAILABLE TO THE ENGINEER. THE
ENGINEER DOES NOT GUARANTEE THE ACCURACY OF SUCH INFORMATION. SERVICE LINES (WATER, POWER, GAS, STORM, SEWER, TELEPHONE & TELEVISION) MAY NOT BE
STRAIGHT LINES OR AS INDICATED ON THE PLANS. STATE LAW REQUIRES CONTRACTOR TO CALL ALL UTILITY COMPANIES BEFORE EXCAVATION FOR EXACT LOCATIONS.
-UNLESS OTHERWISE SPECIFIED, ALL CONSTRUCTION LAYOUT AND STAKING SHALL BE PERFORMED UNDER THE RESPONSIBLE CHARGE OF A LAND SURVEYOR LICENSED IN
THE STATE WHERE THE PROJECT IS LOCATED AND BY A PARTY CHIEF OR ENGINEERING TECHNICIAN EXPERIENCED IN CONSTRUCTION LAYOUT AND STAKING TECHNIQUES AS
ARE REQUIRED BY THE SPECIFIC TYPE OF WORK BEING PERFORMED.
CONSTRUCTION SEQUENCE:
1.APPLY FOR ALL REQUIRED PERMITS FOR PROPOSED WORK.
2.INSTALL STABILIZED STAGING AREA AND VEHICLE TRACKING CONTROL.
3.INSTALL PERIMETER SILT FENCING AND SEDIMENT CONTROL LOGS.
4.INSTALL INLET PROTECTION.
5.OBTAIN BUILDING/DEMO PERMITS, AS REQUIRED.
6.PERFORM STRIPPING, GRUBBING AND STABILIZE STOCKPILED MATERIALS.
7.PERFORM EARTHWORK.
8.STABILIZE STOCKPILED MATERIALS AND GRADED/DISTURBED AREAS, AS REQUIRED.
9.INSTALL UTILITIES, PAVEMENTS AND REMAINING IMPROVEMENTS (WITH THE EXCEPTION
OF SIDEWALK THAT WILL BE LOCATED OVER STORMTECH CHAMBERS.
10.INSTALL STORMTECH CHAMBER SYSTEMS.
11.INSTALL LANDSCAPE IMPROVEMENTS.
12.SOD/SEED AND MULCH NEWLY GRADED AND DISTURBED AREAS.
13.REMOVE ALL TEMPORARY BMPs ACCEPT FOR PERIMETER CONTROLS, INLET PROTECTION IN
GRASSED AREAS AND OUTLET PROTECTION.
14.REMOVE PERIMETER CONTROLS UPON ESTABLISHED 70% VEGETATED GROUND COVER.
EROSION CONTROL CALCULATION TABLE
TOTAL PROJECT AREA ±11.0 ACRES
TOTAL AREA OF DISTURBANCE (ON-SITE ONLY)±10.5 ACRES
TOTAL AREA OF STAGING/STORAGE ±0.30 ACRES
TOTAL AREAS/ROADS FOR HAULING N/A
HEAVY OFF-SITE CONSTRUCTION TRAFFIC N/A
APPROX. % AREA DISTURBED AT ANY ONE TIME 50 %
EXISTING SOIL TYPE C
APPROX. DEPTH TO GROUNDWATER 15' TO 22'
NUMBER OF PHASES 1
TOTAL VOLUME IMPORT TO/EXPORT FROM
PROJECT
±1,500 CY
IMPORT
TOTAL AREA OFF-SITE STOCKPILING OF FILL FROM
PROJECT OR BORROW FROM STRIPPING THE
OFF-SITE AREA (SF/AC)
N/A
STEEPEST SLOPE (EXISTING/PROPOSED)27%/25%
DISTANCE FROM SENSITIVE AREA (WEST TO EAST)N/A
CONTOUR NOTE:
·PROPOSED AND EXISTING CONTOURS ARE SHOWN AT 5' MAJOR
AND 1' MINOR
AREA OF GRADING = 457,380 SF (10.5 ACRES)
EARTHWORK QUANTITIES
CUT 3,500 CY
FILL 5,000 CY
EROSION CONTROL LEGEND
STOCKPILE MANAGEMENT
STABILIZED STAGING AREA
PERMANENT SEEDING OR SOD
SILT FENCE
STREET SWEEPING
SURFACE ROUGHNING
GENERAL NOTES
1.THE CONTRACTOR IS RESPONSIBLE FOR OBTAINING ALL REQUIRED PERMITS PRIOR TO COMMENCEMENT OF ANY WORK ON THE
PROJECT.
2.THE CONTRACTOR SHALL BE SOLELY AND COMPLETELY RESPONSIBLE FOR THE CONDITIONS AT AND ADJACENT TO THE JOB SITE,
INCLUDING SAFETY OF ALL PERSONS AND PROPERTY, DURING THE PERFORMANCE OF THE WORK. THIS REQUIREMENT SHALL APPLY
CONTINUOUSLY AND SHALL NOT BE LIMITED TO NORMAL WORKING HOURS. THE DUTY OF THE CITY TO CONDUCT CONSTRUCTION
REVIEW OF THE CONTRACTOR'S PERFORMANCE IS NOT INTENDED TO INCLUDE REVIEW OF THE ADEQUACY OF THE CONTRACTOR'S
SAFETY MEASURES IN, ON, OR NEAR THE CONSTRUCTION SITE.
3.NO CONSTRUCTION DEBRIS OR MUD SHALL BE TRACKED ONTO ADJACENT STREETS. IF ANY TRACKING DOES OCCUR, IT SHALL BE
CLEANED IMMEDIATELY BY THE CONTRACTOR.
4.THE CONTRACTOR SHALL PROVIDE ALL LIGHTS, SIGNS, BARRICADES, FLAG PERSONS, OR OTHER DEVICES NECESSARY TO PROVIDE
FOR PUBLIC SAFETY IN ACCORDANCE WITH THE CURRENT MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES.
5.THE CONTRACTOR IS RESPONSIBLE FOR THE PROTECTION OF ALL SURVEY MONUMENTS. ANY MONUMENT THAT MUST BE DESTROYED
FOR CONSTRUCTION SHALL BE REPLACED. THE CONTRACTOR SHALL ENGAGE THE SERVICES OF A LICENSED SURVEYOR PRIOR TO
DISTURBING ANY MONUMENTS.
6.IT IS THE CONTRACTOR'S RESPONSIBILITY TO NOTIFY THE OWNER AND THE ENGINEER OF ANY PROBLEMS IN IT IS THE
CONTRACTOR'S RESPONSIBILITY TO NOTIFY THE OWNER AND THE ENGINEER OF ANY PROBLEMS IN CONFORMING TO THESE PLANS
FOR ANY ELEMENT OF THE PROPOSED IMPROVEMENTS PRIOR TO ITS CONSTRUCTION.
7.CONTRACTOR SHALL COORDINATE THE IMPROVEMENTS WITH AND PROVIDE NOTIFICATION OF CONSTRUCTION SCHEDULING TO THE
OWNER OF ANY BUSINESS WHERE PROPOSED IMPROVEMENTS MAY AFFECT THE DAILY OPERATIONS OF THAT OWNER'S BUSINESS.
8.CONTRACTOR SHALL OBTAIN OWNER APPROVAL FOR ANY IMPROVEMENTS NOT CONTAINED WITHIN THESE PLANS.
9.IT IS THE RESPONSIBILITY OF THE CONTRACTOR DURING CONSTRUCTION ACTIVITIES TO RESOLVE CONSTRUCTION PROBLEMS DUE
TO CHANGED CONDITIONS ENCOUNTERED DURING THE PROGRESS OF ANY PORTION OF THE PROJECT.
10.CONTRACTOR SHALL BE RESPONSIBLE FOR THE PROTECTION OF ALL EXISTING OVERHEAD AND UNDERGROUND UTILITIES. IF A
UTILITY IS DAMAGED DURING CONSTRUCTION, THEN IT SHALL BE REPAIRED BY THE CONTRACTOR AT NO EXPENSE TO THE OWNER.
CONTRACTOR SHALL COORDINATE WITH UTILITY OWNER/PROVIDER REGARDING ANY RE- ROUTING, REMOVAL, AND/OR
MODIFICATION TO ANY EXISTING UTILITY LINE AND/OR APPURTENANCE. CONTRACTOR TO COORDINATE WITH A LICENSED
ELECTRICIAN, AS REQUIRED, REGARDING ON - SITE ELECTRICAL ABANDONMENT,RE- ROUTING AND/OR PRESERVATION.
11.ALL EXISTING UTILITIES SHOWN IN THESE PLANS ARE APPROXIMATE AND SOME UTILITIES MAY NOT BE SHOWN AT ALL. SITE
CONTRACTOR SHALL VERIFY THE HORIZONTAL AND VERTICAL LOCATION OF ALL EXISTING UTILITIES SHOWN OR NOT SHOWN IN
THESE PLANS PRIOR TO CONSTRUCTION.
12.STORMTECH CHAMBERS AT BOTH LOCATIONS TO BE CONSTRUCTION AS PART OF THE LATER PHASE OF CONSTRUCTION SEQUENCING
TO REDUCE POTENTIAL SEDIMENTATION OF CHAMBER SYSTEM (SEE CONSTRUCTION SEQUENCES NO. 9 AND 10 ABOVE). CONTINUE
TO PROTECT INLETS THAT CONTRIBUTE FLOW TO CHAMBER SYSTEMS THROUGH SUBSEQUENT CONSTRUCTION SEQUENCING.
CALL UTILITY NOTIFICATION
CENTER OF COLORADO
811
ROCK SOCK
CONCRETE WASHOUT AREA
OVERLAND FLOW ARROW
VEHICLE TRACKING CONTROL INLET PROTECTION
STAKED SEDIMENT CONTROL LOG
LIMITS OF CONSTRUCTION
OUTLET PROTECTION FILE:PROJECT NO:CAD:QUALITY ASSURANCE:DRAWING HISTORYDATE DESCRIPTIONEROSION CONTROL PLANFAIRWAY APARTMENTSCOLLEGE AVE & FAIRWAY LANEFORT COLLINS, COLORADOC7.0 CJS20065_EC PLAN_PROD.DWGERB9/8/211ST FDP SUBMITTAL10/27/2112/15/21----2ND FDP SUBMITTAL3RD FDP SUBMITTAL------200065CONSTRUCTION FENCE
FINAL DEVELOPMENT PLANFILE:PROJECT NO:CAD:QUALITY ASSURANCE:DRAWING HISTORYDATE DESCRIPTIONEROSION CONTROL NOTESFAIRWAY APARTMENTSCOLLEGE AVE & FAIRWAY LANEFORT COLLINS, COLORADOC7.1 CJS20065_DETAIL_PROD.DWGERB9/8/211ST FDP SUBMITTAL10/27/2112/15/21----2ND FDP SUBMITTAL3RD FDP SUBMITTAL------200065“”
“”
FINAL DEVELOPMENT PLANFILE:PROJECT NO:CAD:QUALITY ASSURANCE:DRAWING HISTORYDATE DESCRIPTIONEROSION CONTROL DETAILSFAIRWAY APARTMENTSCOLLEGE AVE & FAIRWAY LANEFORT COLLINS, COLORADOC7.2 CJS20065_DETAIL_PROD.DWGERB9/8/211ST FDP SUBMITTAL10/27/2112/15/21----2ND FDP SUBMITTAL3RD FDP SUBMITTAL------200065
FINAL DEVELOPMENT PLANFILE:PROJECT NO:CAD:QUALITY ASSURANCE:DRAWING HISTORYDATE DESCRIPTIONEROSION CONTROL DETAILSFAIRWAY APARTMENTSCOLLEGE AVE & FAIRWAY LANEFORT COLLINS, COLORADOC7.3 CJS20065_DETAIL_PROD.DWGERB9/8/211ST FDP SUBMITTAL10/27/2112/15/21----2ND FDP SUBMITTAL3RD FDP SUBMITTAL------200065
FINAL DEVELOPMENT PLANFILE:PROJECT NO:CAD:QUALITY ASSURANCE:DRAWING HISTORYDATE DESCRIPTIONEROSION CONTROL DETAILSFAIRWAY APARTMENTSCOLLEGE AVE & FAIRWAY LANEFORT COLLINS, COLORADOC7.4 CJS20065_DETAIL_PROD.DWGERB9/8/211ST FDP SUBMITTAL10/27/2112/15/21----2ND FDP SUBMITTAL3RD FDP SUBMITTAL------200065
Project:Disturbed Acres:10.5
EROSION CONTROL BMPs Units
Estimated
Quantity
Unit
Price
Total
Price
LF 1,250 $2.50 $3,125.00
LF 50 $2.50 $125.00
EA 16 $125.00 $2,000.00
EA 3 $125.00 $375.00
EA 1 $750.00 $750.00
EA 2 $1,380.00 $2,760.00
EA 21 $100.00 $2,100.00
LF 450 $1.50 $675.00
EA 3 $1,500.00 $4,500.00
EA 3 $2,000.00 $6,000.00
SY 3,815 $0.35 $1,335.25
HR 60 $150.00 $9,000.00
Sub-Total:$32,745.25
1.5 x Sub-Total:$49,117.88
Amount of security:$49,117.88
Total Acres x Price/acre:$12,600.00
$1,200.00 Sub-Total: $12,600.00
1.5 x Sub-Total:$18,900.00
Amount to Re-seed:$18,900.00
Minimum escrow amount:$3,000.00
Erosion Control Escrow:$49,117.88
Final Escrow Amount
Street Sweeping
Reseeding Amount
Rock Socks
Stabilized Staging Area
Erosion and Sediment Control Escrow/Security Calculation
for The City of Fort Collins
BMP Amount
Silt Fence (SF)
Vehicle Tracking Control (VTC)
Surface Roughening
“The amount of the security must be based on one and one-half times the estimate of the cost to install the approved measures, or one and one-half times
the cost to re-vegetate the disturbed land to dry land grasses based upon unit cost determined by the City's Annual Revegetation and Stabilization Bid,
whichever is greater. In no instance, will the amount of security be less than one thousand five hundred dollars ($1,500) for residential development or three
thousand dollars ($3,000) for commercial development”
Inlet Protection (IP)
Concrete Washout (CW)
(add all other BMPs for the site in this list)
Fairway Lane Apartments, Fort Collins, CO
Construction Fence (CF)
Stockpile Management
Sediment Control Logs
Miniumum Escrow Amount
Unit Price of Seeding per acre:
Outlet Protection
12/12/2021 6:25 PM P:\20065_FC_Maverick_MF_PDP_FDP_S_College\STORMWATER\Erosion Control\3rd FDP Submittal\Example_Escrow (2).xls