HomeMy WebLinkAboutKING SOOPERS #146, MIDTOWN GARDENS MARKETPLACE - FDP210001 - - STORMWATER MANAGEMENT PLANPREPARED FOR:
Dillon Companies/King Soopers, Inc.
55 Tejon Street
Denver, Colorado 80223
Phone: (303) 778-3053
PREPARED BY:
Galloway & Company, Inc.
6162 S. Willow Drive, Suite 320
Greenwood Village, CO 80111
PREPARATION DATE:
February 3, 2021
MIDTOWN GARDENS MARKETPLACE
KING SOOPERS #146
FORT COLLINS, COLORADO
STORMWATER MANAGEMENT PLAN
Galloway & Company, Inc.Page 2 of 41
I.Certification ..................................................................................................................................... 4
Engineer’s Statement .................................................................................................................. 4
Developer’s Certification ............................................................................................................. 4
II.Project Contacts .............................................................................................................................. 5
III.General Requirements ..................................................................................................................... 5
IV.Site Description ............................................................................................................................... 6
Project Location .......................................................................................................................... 6
V.Site Map .......................................................................................................................................... 7
Vicinity Map ................................................................................................................................ 7
Nature of Construction Activity .................................................................................................... 7
VI.Existing Conditions .......................................................................................................................... 7
Soils............................................................................................................................................ 7
Existing Vegetation ..................................................................................................................... 8
Receiving Waters ........................................................................................................................ 8
Extent of Disturbance .................................................................................................................. 8
Sequence of Major Activities ....................................................................................................... 9
Potential Pollution Sources........................................................................................................ 10
Non-Stormwater Discharges ..................................................................................................... 10
VII.Stormwater Management Controls ................................................................................................. 10
Erosion Control Administrator .................................................................................................... 10
Potential Pollutant Sources ....................................................................................................... 11
Control Measures for Stormwater Pollution Prevention .............................................................. 16
Erosion Control ......................................................................................................................... 17
Materials Management .............................................................................................................. 18
Sediment Control ...................................................................................................................... 18
Site Management and Other Practices ...................................................................................... 19
Revising Control Measures and the SWMP ............................................................................... 21
VIII.Final Stabilization & Long-Term Stormwater Management ............................................................. 22
Inactivation of Permit Coverage ................................................................................................. 24
IX.Inspection & Maintenance Procedures ........................................................................................... 24
Inspection Schedules ................................................................................................................ 25
Inspection Procedures .............................................................................................................. 25
Control Measure Maintenance/Replacement and Failed Control Measures ................................ 26
Record Keeping and Documentation ......................................................................................... 27
X.Standard City of Fort Collins Erosion Control Notes ....................................................................... 28
XI.Conclusion..................................................................................................................................... 36
Conformance with Standards .................................................................................................... 36
TABLE OF CONTENTS
Galloway & Company, Inc.Page 3 of 41
XII.References .................................................................................................................................... 36
Appendix A – Reference Information...................................................................................................... 37
NRCS Web Soil Survey Information .......................................................................................... 37
FEMA FIRMette ........................................................................................................................ 37
Appendix B – SWMP Site Maps and Calculations .................................................................................. 38
SWMP Site Maps and Details.................................................................................................... 38
Appendix C – Inspection Report............................................................................................................. 39
State Inspection Report Template ............................................................................................. 39
Appendix D – Spill and Prevention Control ............................................................................................. 40
Spill Prevention and Control Plan .............................................................................................. 40
Site Spill Log ............................................................................................................................. 40
Appendix E – Erosion Control Ecsrow .................................................................................................... 41
Galloway & Company, Inc.Page 4 of 41
I. Certification
Engineer’s Statement
This report and plan for the SWMP design of Midtown Gardens Marketplace (King Soopers #146) was
prepared by me (or under my direct supervision) in accordance with the provisions of City of Fort Collins
Stormwater Criteria Manual adopted December 2018.
_________________________________________________
Philip Dalrymple, PE Date
Registered Professional Engineer
State of Colorado No 41171
Developer’s Certification
Dillon Companies/King Soopers, Inc. hereby certifies that the Midtown Gardens Marketplace (King
Soopers #146) shall be installed and maintained according to the design presented in this report.
This Erosion and Sediment Control Plan has been placed in the City of Fort Collins file for this project.
The Plan fulfills the Urban Drainage and Flood Control District’s technical criteria and the criteria for
erosion control and requirements of City of Fort Collins to the best of my knowledge. I understand that
additional erosion control measures may be needed if unforeseen erosion problems occur or if the
submitted Plan does not function as intended. The requirements of this Plan shall run with the land and
be the obligation of the landowner until such time as the plan is properly completed, modified, or voided.
_________________________________________________
Authorized Signature Date
Dillon Companies/King Soopers, Inc.
Galloway & Company, Inc.Page 5 of 41
II. Project Contacts
Owner/Developer:
Dillon Companies/King Soopers, Inc.
55 Tejon Street
Denver, Colorado 80223
Phone: (303) 778-3053
Contact: Kevin McKenzie
Engineer:
Galloway & Company, Inc.
6162 S. Willow Drive, Suite 320
Greenwood Village, CO 80111
Phone: 303-770-8884
Contact: Phil Dalrymple, PE
Landscape Architect:
Galloway & Company, Inc.
6162 S. Willow Drive, Suite 320
Greenwood Village, CO 80111
Phone: 303-770-8884
Contact: Sarah Adamson
Contractor:
TBD
Erosion Control Administrator (SWMP Administrator):
TBD
III. General Requirements
This Stormwater Management Plan (SWMP) has been prepared for Dillon Companies/King Soopers, Inc.,
the developer of the site, to fulfill the SWMP requirements of the State of Colorado. The SWMP identifies
all potential pollution sources which may be expected to affect stormwater quality and the initial
(construction phase) and final (after construction) erosion and sedimentation control requirements. It also
specifies the use and maintenance of control measures, designed in accordance with sound engineering
and hydrologic practices, to reduce pollutants and sediment in stormwater discharges associated with
construction activity. The control measures are presented in detail in the text of this report and are shown
on the Erosion and Sediment Control plans (Site Maps) included in the back of this report. This site must
Galloway & Company, Inc.Page 6 of 41
implement the provisions of this SWMP as written and updated from commencement of construction
activity until final stabilization is complete. Both the owner and operator must apply as permittees, except
for instances where the duties of the owner and operator are managed by the owner. The permittee is
responsible for updating the SWMP as construction activity on the site dictates and documenting any
changes within this document. Additionally, this SWMP details control measures and processes for spill
prevention control and countermeasures which shall be adhered to on site.
IV. Site Description
Project Location
Midtown Gardens Marketplace (hereafter referred to as “the site” or “project site”) will be located at the
northwest corner of South College Avenue and West Drake Road. It is bounded on north by an existing
commercial development; on the south by West Drake Road (including a Jiffy Lube to remain); on the
east by College Avenue; and on the west by the MAX-BRT Bus Line. Spring Creek is located north of the
site. More specifically, the site is located in the Southeast Quarter of Section 23, Township 7 North,
Range 69 West in the City of Fort Collins, County of Larimer and State of Colorado.
Legal Description
A replat of Lots 1, 2, and 4 of K-Mart Plaza, and all of Lot 2 of the extension of K-Mart Plaza, situated in
the Southeast 1/4 of Section 23, Township 7 North, Range 69 West, of the 6th Principle Meridian, City of
Fort Collins, County of Larimar, State of Colorado.
Project Coordinate Location
· Longitude 105°04’40"W
· Latitude 40°33'14"N
The Midtown Gardens Marketplace will be developed in one phase and is approximately 11.34 acres. The
existing vacant Kmart building along with the vacant retail building at the northeast corner of the site will
be removed. A new King Soopers Marketplace will replace the Kmart, while a new King Soopers fueling
station will replace the vacant retail building. The existing parking lot will be reconstructed to
accommodate the new structures. The lot containing the Loaf N’ Jug will remain vacant for future
development but is included in this report in its developed condition.
Galloway & Company, Inc.Page 7 of 41
V. Site Map
Vicinity Map
Nature of Construction Activity
The project consists of the construction of utility and roadway infrastructure for the residential subdivision.
Improvements will include cut/fill grading, underground utility mains and service extensions, internal
roadway installation, building foundation and vertical construction, installation of detention/water quality
facilities, and installation of associated landscaping, parking, drives, and site amenities.
VI. Existing Conditions
Soils
The NRCS Web Soil Survey of Fort Collins, Colorado indicates site soils to be a mix of soil types and
Hydrologic Soil Groups (HSGs)including:
· Nunn Clay Loam, HSG ‘C’, 100% of total project area
Galloway & Company, Inc.Page 8 of 41
According to the USDA NRCS Web Soil Survey, ‘Nunn Clay loam, 0 to 1 percent slopes’ covers the entire
project site. This soil is associated with Hydrologic Soil Group (HSG) ‘C’. HSG ‘C’ soils have a slow
infiltration rate when thoroughly wet and 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. Refer to Appendix A for the soil survey information.
Existing Vegetation
The site is currently fully developed and consists of a currently vacant Kmart store, a small retail building
at the northeast corner of the site, a small retail on the southeast corner of the site (to remain), and an
existing Loaf N’ Jug fueling station.
Receiving Waters
The site has been broken into three basins, each with their own set of sub-basins. A description of each
basin and their characteristics can be found below. The intent of the drainage design is to have the runoff
from the majority of the site collected and drain through a water quality and detention facility prior to
entering the existing storm sewer system offsite. Pond A has been sized based on the City of Fort Collins
LID requirements for the necessary portions of the site, which will be located at the downstream
connection point to the existing storm drain system at the southeast corner of the site in College Ave.
The released stormwater from the site will travel in the existing storm sewer system, and ultimately reach
Spring Creek.
Extent of Disturbance
The total area of the site is 11.34 acres. Construction of this project will account for disturbed and
impervious areas as shown in the table below and will be completed in one phase. The earthwork for this
project will result in fill which will be imported to the site.
Total Disturbed Area (ac)12.12 ac
Pre-Construction Impervious Area (ac)7.29 ac
Post-Construction Impervious Area (ac)7.11 ac
Total new Impervious Area (ac)0 ac
The adjusted cut and fill quantities are listed below.
Cut Volume = 1,710 CY
Fill Volume = 10,250 CY
Net Volume = 8,540 CY Fill
Galloway & Company, Inc.Page 9 of 41
Sequence of Major Activities
The projected sequence of work is expected to occur in the following order, with some overlap and
adjustments as site conditions dictate:
· Install control measures
· Demolish existing buildings and parking lot
· Rough overlot grading
· Grade building pad
· Trench and install underground utilities
· Commerce vertical construction
· Fine grade the remainder of the site
· Pavement installation
· Seed native areas and install permanent landscaping
· Remove final control measures upon establishment of vegetation
Construction is anticipated to begin in June 2021 and substantial completion of the project is anticipated
in July 2022.
The major milestones of construction and their associated control measures are listed in the following
table.
Rough
Grading
Utility
Installation
Building
Construction
Curb and
Gutter
Construction
Paving Fine
Grading
Permanent
Landscaping
Dust Control
Concrete Washout
Area
Good Housekeeping
Silt Fence
Inlet Protection
Vehicle Tracking
Control
Stabilized Staging Area
Street Sweeping
Temporary Batch Plant
Galloway & Company, Inc.Page 10 of 41
Potential Pollution Sources
During construction there is potential for pollution from grading, utility, roadway, and building construction
activities. These activities include ground disturbance, refueling and maintenance of equipment, washing
of equipment, concrete waste, and the on-site use of paints, solvents, and other chemicals required for
construction. Additionally, there is potential for pollution from the concrete washout area, temporary batch
plant, worker’s trash and portable toilets. Locations of potential pollution sources will be shown and
updated on the Site Maps by the ECA. The ECA is also responsible for adhering to the Spill Prevention
and Control Plan included in Appendix E of this plan.
Non-Stormwater Discharges
Based on current information, the only non-stormwater discharge(s) anticipated are landscape irrigation
return flow, emergency firefighting activities, discharge to the ground of concrete washout water, and
construction dewatering activities.
If landscape irrigation is to be installed, then potential return flow from the irrigation system must be
documented.
Emergency firefighting activities that may occur on the site are permissible under the Colorado General
Permit for Stormwater Discharges Associated with Construction Activity.
A designated contained concrete washout area is located on the Site Map; infiltration discharge of
concrete washout water from washing of tools and concrete mixer chutes may be discharged on this
construction site provided that control measures in accordance with Part I.B.1.a.ii.(b) of the Colorado
General Permit for Stormwater Discharges Associated with Construction Activity are installed to prevent
pollution of groundwater and discharges do not leave the site as surface runoff or to surface waters.
If low risk discharges including potable water monitoring devices, potable water snowmelt, or
uncontaminated groundwater to land occur, they must be discharged in accordance with the CDPHE Low
Risk Discharge policies.
VII. Stormwater Management Controls
Erosion Control Administrator
The Erosion Control Administrator (ECA) is an individual knowledgeable in the principles and practices of
erosion and sediment control and pollution prevention and has the skills to assess conditions at
construction sites that could impact stormwater quality and to assess the effectiveness of stormwater
controls implemented to meet the requirements of the CDPS General Permit. The Permittee(s) is
responsible for ensuring that the inspector is a qualified stormwater manager. The Permittee(s) shall
Galloway & Company, Inc.Page 11 of 41
designate a ECA who will be the contact for all SWMP related issues and the person responsible for its
accuracy, completeness, and implementation. The ECA should be a person with authority to adequately
manage and direct day-to-day stormwater quality management activities at the site.
The ECA is responsible for holding a weekly stormwater meeting attended by the Permittee(s) with all
contractors and subcontractors involved in ground-disturbing activities to review the requirements of the
Permit(s), the SWMP, and address any problems that have arisen in implementing the SWMP or
maintaining the BMPs. The ECA shall maintain a log of all weekly meetings and document the issues
addressed in the meetings.
The name and contact information for the Erosion Control Administrator is:
Name: TBD Phone: TBD
Potential Pollutant Sources
Potential pollutant sources for this site include:
Disturbed and Stored Soils – Areas on the project site that are to be disturbed will be grubbed and
overlot graded prior to major utility and roadway construction. This will be a one-time activity, per
construction phase, and should be completed relatively early in the project timeline. The areas of grading
that will not require additional disturbance shall receive final landscaping within 7 days. Otherwise
temporary seeding and mulching will be required within 7 days of last disturbance if no further disturbance
is anticipated for at least 14 days. Any soil stockpiles utilized during construction will be covered with a
tarpaulin when not in active use and will have silt fence installed along the base of the slope.
Construction Vehicle Entrance and Vehicle Tracking of Sediments – There is potential for tracking of
soils between the beginning of the grading process and the final stabilization of the site. Construction
vehicle entrances shall be minimized to reduce the potential for tracking of soils off-site and vehicle
tracking control shall be installed at each construction entrance. Vehicle tracking control is to be installed
prior to land disturbance activities and sweeping is to take place as needed. Vehicle access to the
exposed and disturbed subgrade will be limited primarily to roll on/off earthmoving equipment and heavy
materials delivery trucks. The ECA is responsible for ensuring that access to exposed subgrade is
limited, both in quantity and in timing relative to the tracking susceptibility of the soil as it relates to
moisture content. The ECA must keep the adjacent parking areas and public rights-of-way free from mud
and other tracked debris from the site.
Galloway & Company, Inc.Page 12 of 41
Management of Contaminated Soils – Contaminated soils are not anticipated based on due diligence
conducted for the project site. If suspect soils are encountered construction activity shall immediately halt
and environmental professionals shall review the materials and provide recommendations on handling of
materials. All handling of materials shall be in accordance with State and Federal regulations.
Loading and Unloading Operations – Loading and unloading operations are expected during demolition
and during the delivery and staging of materials and equipment. Additionally, imported materials may be
necessary to achieve final grades. All loading and unloading operations of equipment shall be
accomplished in areas protected by erosion and sediment controls. It is recommended that all equipment
be cleaned on-site and within protected areas prior to exiting the site.
Outdoor Storage Activities – Outdoor storage is anticipated during construction activities including
delivery and staging of materials. Potential chemicals include paint, fuel, oil, form oil, hydraulic fluid,
plumbing glue, and fertilizer. Outdoor storage activities shall be limited to the designated stabilized
staging area. All stored chemicals require protection from the elements and must be stored off the
ground in some manner. An emergency spill kit is required to be in proximity of any stored chemicals and
hazardous materials. The kit at a minimum would have a broom, chemical absorbent, shovel, and turn
pallets. Good housekeeping practices shall be employed to prevent pollution associated with solid, liquid,
and hazardous construction-related materials and wastes. Secondary containment for fuel tanks,
petroleum products, and chemicals shall be utilized to reduce the likelihood of contamination of State
Waters and Waters of the United States. The ECA shall show storage locations on the site maps and
update them as needed.
Fueling of Vehicles and Equipment – Vehicle and equipment fueling shall occur within the stabilized
staging area. Fueling is expected to occur during all phases of construction activity. Under no
circumstances shall fueling take place within 200 feet of any State Waters or Waters of the United States
or within 50 feet of an inlet or ditch. Spill response kits shall be readily available an accessible at
locations where fueling takes place. Please refer to the Hazardous Material Management and Spill
Reporting Plan section for information on clean-up and disposal of spills.
Temporary on-site fuel tanks for construction vehicles shall meet all state and federal regulations. Tanks
shall have approved spill containment with the capacity required by the applicable regulations. From
NFPA 30: All tanks shall be provided with secondary containment (i.e. containment external to and
separate from primary containment). Secondary containment shall be constructed of materials of
sufficient thickness, density, and composition so as not to be structurally weakened as a result of contact
with the fuel stored and capable of containing discharged fuel for a period of time equal to or longer than
the maximum anticipated time sufficient to allow recovery of discharged fuel. It shall be capable of
Galloway & Company, Inc.Page 13 of 41
containing 110% of the volume of the primary tank if a single tank is used, or in the case of multiple tanks,
150% of the largest tank or 10% of the aggregate, whichever is larger.
The tanks shall be in sound condition free of rust or other damage which might compromise containment.
Fuel storage areas will meet all EPA, OSHA and other regulatory requirements for signage, fire
extinguisher, etc. Hoses, valves, fittings, caps, filler nozzles, and associated hardware shall be
maintained in proper working condition at all times. The location of fuel tanks shall be shown on the Site
Maps and shall be located to minimize exposure to weather and surface water drainage features.
A Spill Prevention and Control (SPCP) Plan has been included in Appendix E.
Maintenance of Vehicles and Equipment – If equipment is to be maintained and stored in an open area
this area should not be within the drip line of trees and not be within 100 feet of a watercourse or wetland.
Runoff should be diverted away from watercourses and wetlands. Maintenance should be done on
impervious areas surrounded with impervious berms. Where this is not possible, use pads designed to
contain the pollutants which may leak or spill during maintenance operations. Impervious pads are
particularly important on sandy and other course soils where spilled materials can easily leach into the
groundwater. Equipment shall be checked before and after each use and, minimally, during the weekly
stormwater inspection if otherwise idle. Periodic checks of the equipment wash areas shall be performed
to ensure proper operation.
Hazardous Material Management and Spill Reporting Plan – Any hazardous or potentially hazardous
material that is brought onto the construction site will be handled properly in order to reduce the potential
for storm water pollution. All materials used on this construction site will be properly stored including the
use of secondary containment measures, handled, dispensed and disposed of following all applicable
label directions. Flammable and combustible liquids will be stored and handled according to 29 CFR
1926.152. Only approved containers and portable tanks shall be used for storage and handling of
flammable and combustible liquids.
Material Safety Data Sheets (MSDS) information will be kept on site for any and all applicable materials.
In the event of an accidental spill, immediate action will be undertaken by the General Contractor to
contain and remove the spilled material. All hazardous materials will be disposed of by the Contractor in
the manner specified by federal, state and local regulations and by the manufacturer of such products.
As soon as possible, the spill will be reported to the appropriate agencies. As required under the
provisions of the Clean Water Act, any spill or discharge entering waters of the United States will be
properly reported. The General Contractor will prepare a written record of all spills and associated clean-
Galloway & Company, Inc.Page 14 of 41
up and also notify the City of Fort Collins at 970-221-6700. Spills should be reported online at Access
Fort Collins (https://clients.comcate.com/newrequest.php?id=150). The General Contractor will provide
notice to Owner immediately upon identification of a reportable spill.
Any spills of petroleum products or hazardous materials in excess of Reportable Quantities as defined by
EPA or the state or local agency regulations, shall be immediately reported to the EPA National
Response Center (1-800-424-8802), the Colorado Department of Public Health and Environment
(CDPHE) (1-877-518-5608), the City of Fort Collins at (970-221-6700).
The State reportable quantity for petroleum products is 25 gallons or more (or that cause a sheen on
nearby surface waters). Spills from regulated aboveground and underground fuel storage tanks must be
reported to the State Oil Inspector within 24 hours (after-hours contact CDPHE Emergency Spill
Reporting Line). This includes spills from fuel pumps. Spills or releases of hazardous substances from
regulated storage tanks in excess of the reportable quantity (40 CFR Part 302.6) must be reported to the
National Response Center, the local fire authority immediately, the State Oil Inspector, and the City of
Fort Collins within 24 hours.
The reportable quantity for hazardous materials can be found in 40 CFR 302 at:
http://www.ecfr.gov/cgi-bin/text-idx?tpl=/ecfrbrowse/Title40/40cfr302_main_02.tpl
In order to minimize the potential for a spill of petroleum product or hazardous materials to come in
contact with storm water, the following steps will be implemented:
a) All materials with hazardous properties (such as pesticides, petroleum products, fertilizers,
detergents, construction chemicals, acids, paints, paint solvents, additives for soil stabilization,
concrete, curing compounds and additives, etc.) will be stored including secondary containment
measures in a secure location, under cover, when not in use.
b) The minimum practical quantity of all such materials will be kept on the job site and scheduled for
delivery as close to time of use as practical.
c) A spill control and containment kit (containing for example, absorbent material such as kitty litter
or sawdust, acid neutralizing agent, brooms, dust pans, mops, rags, gloves, goggles, plastic and
metal trash containers, etc.) will be provided on the construction site and location(s) shown on
Site Maps. The kit should be inspected for completeness as a part of weekly stormwater
inspections.
d) All of the product in a container will be used before the container is disposed of. All such
containers will be triple rinsed with water prior to disposal. The rinse water used in these
containers will be disposed of in a manner in compliance with state and federal regulations and
will not be allowed to mix with storm water discharges.
Galloway & Company, Inc.Page 15 of 41
e) All products will be stored in and used from the original container with the original product label.
f) All products will be used in strict compliance with instructions on the product label.
g) The disposal of excess or used products will be in strict compliance with instructions on the
products label and local regulations.
The contractor is responsible for the Spill Prevention and Control Plan (SPCP) included in Appendix D of
the SWMP. If the contractor elects to provide his own SPCP it must be included in Appendix D as a
replacement. A contractor provided SPCP shall clearly state measures to stop the source of a spill,
contain the spill, clean up the spill, dispose of contaminated materials, and train personnel to prevent and
control future spills. In addition, the SPCP must include contact and documentation requirements for
each of the Minor, Significant, and Hazardous spill magnitudes. Further requirements are listed below in
the equipment fueling section.
Significant Dust or Particulate Generating Processes – Dust and airborne particulates can be
expected during clearing and grubbing, site grading, saw cutting, and final stabilization activities. Dust
mitigation shall be implemented as necessary.
Routine Maintenance Activities Involving Chemicals, Detergents, Fuels, Solvents, Oils, etc. – On-
site routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc.
shall occur within the stabilized staging area when possible and shall be kept to a minimum. Routine
maintenance activities are expected to occur during all phases of construction activity. The ECA shall
show storage locations on the appropriate plan sheets and update them as needed. All chemicals are to
be protected from the elements. Spill response kits shall be readily available an accessible at locations
where maintenance takes place. Please refer to the Hazardous Material Management and Spill
Reporting Plan section for information on clean-up and disposal of spills.
On-Site Waste Management –Waste generation is expected as a result of construction activities. All
waste shall be properly stored and disposed of to minimize the potential for pollution of stormwater or
snowmelt runoff. Additionally, on-site waste should be stored such that wind will not transport refuse
away from the storage area. This may include the use of storage containers, dumpsters, fencing or
covers.
Concrete Truck/Equipment Washing (including truck chute and associated fixtures and
equipment) – Concrete washout area shall be installed prior to any concrete placement on site. Signs
shall be placed at the construction entrance(s), at the washout area, and elsewhere as necessary to
clearly indicate the location of the concrete washout area. The washout area shall be repaired and
Galloway & Company, Inc.Page 16 of 41
enlarged or cleaned out as necessary to maintain capacity for wasted concrete. Concrete and concrete
wash water shall be removed from the site and disposed of at an accepted waste facility.
Dedicated Asphalt and Concrete Batch Plants – A small temporary batch plant may be installed to
allow on-site storage and mixing of concrete and masonry. This should be protected by sediment traps,
silt fence, diversion ditches or other perimeter protection as appropriate to keep stockpiled material within
the plant area and located on the Site Maps by the ECA.
Non-Industrial Waste Management
Worker’s Trash – The site shall be policed at the end of each work day to be kept free of trash and
debris resulting from workers day to day activities. If necessary, utilize clearly marked and protected
containers for trash and debris at convenient locations throughout the site. Burying of waste on site is
prohibited. Trash must be properly contained at the end of each day.
Portable Toilets – All personnel involved with construction activities must comply with state and local
sanitary or septic system regulations. Temporary sanitary facilities will be provided at the site throughout
the construction phase. They must be utilized by all construction personnel and must be serviced weekly
by a commercial operator. The location of sanitary facilities shall be shown on the Site Maps. Portable
toilets must be securely anchored a minimum of 10’ behind curbs and are not allowed within 50’ of inlets
or within 50’ of a water of the State or the municipal storm drain system.
Concrete and Saw Cutting Waste – Concrete and asphalt cutting are expected during demolition
activities. The waste material from these operations will be fully contained and cleaned up immediately
by vacuum. Any remaining residue shall be cleaned by vacuum or street sweeping.
Dewatering – Dewatering of excavations shall occur as permitted by a Water Quality Control Division
Low Risk Guidance Document. Any water from dewatering operations shall be uncontaminated and
discharge to a control measure and captured on-site for infiltration and/or evaporation. Under no
circumstances shall construction dewatering water be allowed to leave the site as surface runoff. If
contamination of groundwater is suspected, a separate construction dewatering permit will be required.
Control Measures for Stormwater Pollution Prevention
The following erosion control, sediment control, materials management, and site management measures
shall be utilized and/or installed as indicated on the site maps to reduce the potential of the sources
identified above to contribute pollutants to stormwater discharges.
Galloway & Company, Inc. Page 17 of 41
The following structural control measures are anticipated to be implemented on this site:
BMP Quantity Unit
Permanent Seeding 0.93 AC
Wind Erosion and Dust Control 12.12 AC
Concrete Washout Area 1 EA
Silt Fence 3123 LF
Rock Sock 12 LF
Storm Sewer Inlet Protection 16 EA
Construction Fence 2614 LF
Vehicle Tracking Control 1 SY
Stabilized Staging Area 1636 SY
Site maps and control details can be found in Appendix B of this document.
Erosion Control
Temporary and Permanent Seeding – All denuded areas that will be inactive for 14 days or more must
be stabilized temporarily with the use of fast-germinating annual grass/grain varieties appropriate for site
soil and climate conditions, straw/hay mulch, wood cellulose fibers, tackifiers, netting and/or blankets.
Stockpiles and diversion ditches/berms must be stabilized to prevent erosion and dust issues. A City of
Fort Collins approved seed mix shall be used. All areas at final grade must be seeded or sodded within
14 days after completion of work in that area. Prepare soil and seed immediately after final grade is
achieved. At the completion of ground-disturbing activities the entire site must have permanent vegetative
cover, meeting vegetative density requirements, or mulch per landscape plan, in all areas not covered by
hardscape (pavement, buildings, etc.). Except for small (<100 SF) level spots, seeded areas should be
protected with mulch, tackifier, or a rolled erosion control product. Mulch must be crimped by disc or other
machinery.
Wind Erosion and Dust Control – Wind erosion and dust control measures help to keep soil particles
from entering the air because of land disturbing construction activities. These control measures include a
variety of practices generally focused on either graded disturbed areas or construction roadways. For
graded areas, practices such as seeding and mulching, use of soil binders, site watering, or other
practices that provide prompt surface cover should be used. For construction roadways, road watering
and stabilized surfaces should be considered. Dust control measures should be used on any site where
dust poses a problem to air quality. Dust control is important to control for the health of construction
workers and surrounding waterbodies. Dust control shall be implemented throughout construction once
the site has any exposed, bare soil. It shall be implemented until all bare soil has been covered by final
stabilization.
Galloway & Company, Inc.Page 18 of 41
Materials Management
Concrete Washout Area – The concrete washout area shall be installed prior to any concrete placement
on site. Signs shall be placed at the construction entrance(s), at the washout area, and elsewhere as
necessary to clearly indicate the location of the concrete washout area. The washout area shall be
repaired and enlarged or cleaned out as necessary to maintain capacity for wasted concrete. Concrete
shall be removed from the site and disposed of at an accepted waste facility. The concrete washout area
shall be installed as shown on site maps prior to any concrete work. It shall remain in place until all
concrete work is complete.
Stockpile Management – Stockpile management includes measures to minimize erosion and sediment
transport from soil stockpiles. Soil stockpiles shall be located away from all drainage system components
including inlets. When practical, choose stockpile locations that will remain undisturbed for the longest
period of time as the phases of construction progress. Place sediment control measures such as silt
fence, straw wattles, or rock socks around the perimeter of all stockpiles. For stockpiles in active use,
provide a stabilized designated access point on the upgradient side of the stockpile. Soils stockpiled for
more than 60 days should be seeded and mulched with a temporary grass cover. Soil stockpile
management shall be installed when soil stockpiling begins. It shall remain in place until all soil has been
replaced or hauled off-site to a permanent location.
Good Housekeeping Practices – A clean and orderly work site reduces the possibility of accidental
spills and reduces safety hazards to employees and subcontractors. It will also help minimize potential
contamination of stormwater runoff. Housekeeping practices are to include providing waste
management, establishing proper building material staging areas, designating paint and concrete
washout areas, establishing proper equipment and vehicle fueling and maintenance practices, controlling
equipment and vehicle washing and allowable non-stormwater discharges, and developing a spill
prevention and response plan. Good housekeeping practices shall be employed throughout the duration
of construction.
Sediment Control
Silt Fence – Silt fence is a synthetic permeable woven or non-woven geotextile fabric incorporating
support stakes at intervals sufficient to support the fence (5-feet maximum distance between posts),
water, and sediment retained by the fence. The fence is designed to retain sediment-laden storm water
and allow settlement of suspended soils before the storm water flows through the fabric and discharges
off-site. Silt fence shall be located on the contour to capture overland, low-velocity sheet flows. Silt fence
shall be installed at the start of construction prior to any earth moving activities. Silt fence shall remain in
Galloway & Company, Inc.Page 19 of 41
place until site construction has been completed to a point where other control measures can control the
remaining sediment concerns.
Rock Sock – Rock socks consist of gravel wrapped by wire mesh or a geotextile to form an elongated
cylindrical filter to prevent sediment transfer. They are used to trap sediment from stormwater runoff that
flows onto roadways as a result of construction activities. They can be used as curb flow control,
perimeter control, or as part of inlet protection. Rock socks shall be installed at the start of construction
prior to any earth moving activities. Rock socks shall remain in place until final stabilization.
Storm Sewer Inlet Protection – Inlet protection devices intercept and/or filter sediment before it can be
transported from a site into the storm drain system and discharged into a lake, river, stream, wetland, or
other body of water. These devices also keep sediment from filling or clogging storm drain pipes, ditches,
and downgradient sediment traps or ponds. Inlet protection may also include placement of a barrier to
create a bypass of an inlet transferring flow downstream to a sediment trap, basin, or other inlet
discharging to a non-critical area. The primary mechanism is to place controls in the path of flow
sufficient to slow the sediment-laden water to allow settlement of suspended soils before discharging into
the storm sewer. It is possible that as construction progresses from storm sewer installation through to
paving that the inlet protection devices should change. All inlet protection devices create ponding of
storm water. This should be taken into consideration when deciding on which device or devices should
be used. Inlet protection shall be installed around all existing inlets at the start of construction prior to any
earth moving activities and around all proposed inlets as they are constructed. Inlet protection shall
remain in place until final stabilization (pavement and/or landscaping).
Site Management and Other Practices
Construction Phasing and Scheduling – Effective construction site management to minimize erosion
and sediment transport includes attention to construction phasing, scheduling, and sequencing of land
disturbing activities. On most construction projects, erosion and sediment controls will need to be
adjusted as the project progresses and should be documented in the SWMP. All construction projects
can benefit from upfront planning to phase and sequence construction activities to minimize the extent
and duration of disturbance. Larger projects and linear construction projects may benefit most from
construction sequencing or phasing, but even small projects can benefit from construction sequencing
that minimizes the duration of disturbance. Typically, erosion and sediment controls needed at a site will
change as a site progresses through the major phases of construction. Erosion and sediment control
practices corresponding to each phase of construction must be documented in the SWMP.
Protection of Existing Vegetation – Existing vegetation should be preserved for the maximum practical
duration on a construction site through the use of effective construction phasing. Preserving vegetation
Galloway & Company, Inc.Page 20 of 41
helps to minimize erosion and can reduce revegetation costs following construction. Potential sources of
injury to existing trees include soil compaction during grading or due to construction traffic, direct
equipment-related injury such as bark removal, branch breakage, surface grading and trenching, and soil
cut and fill. In order to minimize injuries that may lead to immediate or later death of the tree, tree
protection zones shall be established at the beginning of a construction project and remain in place until
final stabilization.
Construction Fence – Construction fence shall restrict site access to designated entrances and exits for
safety and preservation of adjacent areas. Construction fence shall be installed around the perimeter of
the site except at construction access points at the start of construction prior to any earth moving
activities. It shall remain in place until construction is complete and no further threat to public safety
exists (e.g. open trenches, heavy operating equipment on-site).
Vehicle Tracking Control – Vehicles leaving construction sites can track sediment onto adjoining
roadways. This sediment can create safety hazards and contribute significantly to sediment pollution in
waterways. The purpose of a vehicle tracking control measure is to prevent soil and mud on work
vehicles from being carried offsite and deposited on public roads, parking lots, and other areas. All points
closed to the general public and providing access into the construction site shall include a marked
construction exit that will be monitored for any signs of tracking from the construction site. It is expected
that only trailer delivered equipment will access the exposed subgrades and that vehicle tracking to the
adjacent publicly accessible parking and the public rights-of-way should not be evident. However, if that
proves not to be the case a roughened exit composed of ribbed steel plate and down-gradient silt dikes is
to be installed to the dimensions shown on the site maps. The rough texture of the plates helps to
remove clumps of soil adhering to the construction vehicle tires through the action of vibration and jarring
over the rough surface and the friction of the ribbed matrix against soils attached to vehicle tires. It may
also be necessary to install a wheel wash system. If this is done, a sediment trap control must be
installed to treat the wash water before it discharges from the site. Discharge must be directed to the
sediment basin within the limits of construction as indicated. The vehicle tracking control shall be
installed at all construction access points at the start of construction prior to any earth moving activities. It
shall remain in place until permanent pavement is installed.
Stabilized Construction Roadway – A stabilized construction roadway is a temporary method to control
sediment runoff, vehicle tracking, and dust from roads during construction activities. When a construction
roadway is expected to have frequent construction traffic it is advisable to install a stabilized construction
roadway instead of rough-cut street controls. The road surface shall be stabilized with an aggregate base
course of 3-inch diameter granular material. Roadside ditches shall also be stabilized if applicable. Early
application of road base is typically suitable in place of the coarse aggregate specified above.
Galloway & Company, Inc.Page 21 of 41
Stabilized Staging Area – This is a clearly designated area where construction equipment and vehicles,
stockpiles, waste bins, and other construction-related materials are stored. The stabilized storage area
consists of a stabilized surface, covered with 3-inch diameter aggregate or larger. The stabilized staging
area shall be installed as shown on the site maps at the start of construction prior to any earth moving
activities. It shall remain in place until permanent pavement is installed.
Street Sweeping and Vacuuming – Street sweeping and vacuuming remove sediment that has been
tracked onto roadways to reduce sediment transport into storm drain systems or a surface waterway.
Street sweeping or vacuuming should be conducted when there is noticeable sediment accumulation on
roadways on or adjacent to the construction site. Typically, this will be concentrated at the entrance/exit
to the construction site. Well-maintained stabilized construction entrances, vehicle tracking controls and
tire wash facilities can help reduce the necessary frequency of street sweeping and vacuuming. Street
sweeping shall occur as needed and at a minimum once a day throughout the duration of construction.
Dewatering Operations – Dewatering typically involves pumping water from an inundated area to a
control measure, and then downstream to a receiving waterway, sediment basin, or well-vegetated area.
Dewatering typically involves several control measures in sequence. Dewatering operations are used
when an area of the construction site needs to be dewatered as the result of a large storm event,
groundwater, or existing ponding conditions. This can occur during deep excavation, utility trenching, and
wetland or pond excavation. All dewatering discharges must be treated to remove sediment before
discharging from the construction site. Discharging water into a sediment trap or basin is an acceptable
treatment option. Water may also be treated using a dewatering filter bag and a series of straw bales or
sediment logs. If these options are not feasible, a settling tank or an active treatment system may need
to be utilized. Settling tanks are manufactured tanks with a series of baffles to promote settling.
Flocculants can also be added to the tank to induce more rapid settling. Contact the state agency for
special requirements prior to using flocculants and land application techniques. Some commonly used
methods to handle the pumped water without surface discharge include land application to vegetated
areas through a perforated discharge hose (i.e., the "sprinkler method") or dispersal from a water truck for
dust control.
Paving and Grinding Operations – Runoff from paving and grinding operations shall be managed to
minimize pollutants entering storm drainage systems and natural waterways. Use runoff management
practices during all paving and grinding operations such as surfacing, resurfacing, and saw cutting.
Revising Control Measures and the SWMP
Should there be changes to the implemented control measures the ECA shall be notified and the SWMP
modified to accurately reflect the field conditions. Examples include, but are not limited to, removal of
Galloway & Company, Inc.Page 22 of 41
control measures, identification of new potential pollutant sources, addition of control measures,
modification of control measure installation and implementation criteria or maintenance procedures, and
changes in items included in the Site Map and/or description. SWMP revisions must be made prior to
changes in site conditions, except for Responsive SWMP Changes, as follows:
· SWMP revisions must be made immediately after changes are made in the field to address control
measure installation and/or implementation issues; or
· SWMP revisions that require the development of supporting documentation (e.g. design of sediment
basin capacity) must be made as soon as practicable, but in no case more than 72 hours, after
change(s) in control measure installation and/or implementation occur at the site.
Notation must be included in the plan that identifies:
· The date of the site change
· The control measure removed or modified
· The location(s) of those control measure(s)
· Any changes to the control measure(s)
This SWMP should be viewed as a “living document” that is to be continuously reviewed and modified as
part of the overall process of assessing and managing stormwater quality issues on-site.
VIII. Final Stabilization & Long-Term Stormwater Management
Permanent stabilization of the site will include establishment of native seeded areas in
specified ROW and overlot graded areas with a City of Fort Collins approved seed mix,
permanent landscaping areas, and pavement placement.In accordance with the CDPS
General Permit for Stormwater Discharges Associated with Construction Activity (COR-400000)
(the stormwater permit): “Final site stabilization is achieved when perennial vegetative
cover provides permanent stabilization with a density greater than 70 percent of pre-
disturbance levels over the entire area to be stabilized by vegetative cover or equivalent
cover has been employed.” Additionally, all permanent stormwater control measures
must be completed and operational as designed and any stormwater conveyances
cleaned of sediment and stabilized. Further, all temporary stormwater control measures
must be removed unless designed to decompose on-site.
The following criteria must be met when planning for final stabilization:
Galloway & Company, Inc.Page 23 of 41
· Stabilization must be permanent
· ALL disturbed areas must be stabilized
· Alternatives must follow good practice
The stormwater permit allows the use of alternatives to vegetation to achieve final
stabilization. These alternatives must meet specific criteria to be considered equivalent
to vegetation. Examples of alternative stabilization practices include:
· Permanent Paving and Buildings
· Hardscape
· Geogrid
· Xeriscape
· Compacted and Stabilized Unpaved Driving Surfaces
This site will be constructed in one phase. The only area that will receive permanent
seeding is the future pad lot at the southeast corner of the site. Refer to the Seed Mix
below and notes on the Final Landscape Plans.
Seed Mix Information
Galloway & Company, Inc.Page 24 of 41
Inactivation of Permit Coverage
Once the criteria for final stabilization have been met, the Permittee shall make a request to terminate the
permit through the Colorado Environmental Online Services (CEOS) system.
The ECA shall provide a completed SWMP binder to the owner at the conclusion of the project which will
include the original SWMP, all markups or other changes to the SWMP, and inspection and maintenance
records. The owner shall keep this document on file for a minimum of 3 years after construction
completion.
IX. Inspection & Maintenance Procedures
The contractor must keep the approved SWMP on site at all times. The person(s) inspecting the site may
be on the Permittee’s staff or a third party hired to conduct stormwater inspections under the direction of
the Permittee. The Permittee is responsible for ensuring that the inspector is a qualified stormwater
manager. All regulatory authorities may inspect the land or site covered by the SWMP at any time, without
prior notice, for compliance with the SWMP. If site conditions indicate that the objectives of this section
are not being met, the operator shall make appropriate modifications to the SWMP. Any modification
must be recorded on the owner’s copy of the SWMP and the ECA notified. The Permittee must maintain
inspection records on site with the SWMP and such records must be provided to the regulatory agencies
for review upon request. At a minimum, the inspection report must include:
· The inspection date
· Name(s) and title(s) of personnel conducting the inspection
· Weather conditions at the time of inspection
· Phase of construction at the time of inspection
· Estimated acreage of disturbance at the time of inspection
· Location(s) of discharges of sediment or other pollutants from the site
· Location(s) of control measures needing maintenance
· Location(s) and identification of inadequate control measures
· Location(s) and identification of additional control measures needed that were not in place at the
time of inspection.
· Description of the minimum inspection frequency (either in accordance with Part I.D.2., I.D.3. or
I.D.4.) utilized when conducting each inspection.
· Deviations from the minimum inspection schedule as required in Part I.D.2.
· After adequate corrective action(s) and maintenance have been taken, or where a report does not
identify incidents requiring corrective action or maintenance, the report shall contain a statement
as required in Part I.A.3.f.
Galloway & Company, Inc.Page 25 of 41
The State Construction Stormwater Site Inspection Report template has been included in Appendix D.
The Permittee may provide their own inspection report if desired but must ensure it meets the
requirements above.
Inspection Schedules
Between the time this SWMP is implemented and final Inactivation Notice or Termination Application has
been submitted, all disturbed areas and pollutant controls must be inspected with one of the following
minimum frequencies:
· At least one inspection every 7 calendar days
· At least one inspection every 14 calendar days, plus post-storm event inspections conducted
within 24 hours after the end of any precipitation or snowmelt event that causes surface erosion.
If more frequent inspections are required to ensure that control measures are properly maintained and
operated, the inspection schedule must be modified to meet this need. The first site inspection must
occur within 7 calendar days of the commencement of construction activities on site. The contractor and
ECA shall adhere to the maintenance schedules listed in the details for each control measure.
Permittees must conduct site inspections at least once every 7 calendar days for sites that discharge to a
water body designated as an Outstanding Water by the Water Quality Control Commission. Preventative
maintenance shall be coupled with periodic inspections.
Inspection Procedures
The purpose of site inspections is to assess performance of pollutant controls. Based on these
inspections the contractor, in consultation with the ECA (if different) will decide whether it is necessary to
modify this SWMP, add or relocate controls, or revise or implement additional control measures in order
to prevent pollutants from leaving the site via stormwater runoff. The contractor has the duty to cause
pollutant control measures to be repaired, modified, supplemented, or take additional steps as necessary
in order to achieve effective pollutant control. Note: If a control measure is covered by snow, mark the
control measure as not applicable and document the reason the control measure cannot be inspected on
the daily report.
The inspection must include observation of:
· The construction site perimeter and discharge points, including discharges into a storm sewer system
· All disturbed areas
· Areas used for material/waste storage that are exposed to precipitation
· Areas determined to have a significant potential for stormwater pollution, such as demolition areas,
concrete washout areas, or construction vehicle entrances
· All erosion and sediment control measures identified in the SWMP
Galloway & Company, Inc.Page 26 of 41
· Structural control measures that may require maintenance, such as secondary containment around
fuel tanks or the condition of spill response kits
Examples of specific items to evaluate during site inspections are listed below. This list is not intended to
be comprehensive. During each inspection, the inspector must evaluate overall pollutant control system
performance as well as particular details of individual system components. Additional factors should be
considered as appropriate to the circumstances. Additional information on maintenance requirements
can be found in the BMP Fact Sheets in Volume 3 of the Urban Storm Drainage Criteria Manual by the
Urban Drainage and Flood Control District.
Construction Exit and Track Out – Locations where vehicles enter and exit the site must be inspected
for evidence of off-site sediment tracking. A stabilized construction exit shall be constructed where
vehicles enter and exit. Exits shall be maintained or supplemented as necessary to prevent the release
of sediment from vehicles leaving the site. Any sediment deposited on the roadway shall be swept as
necessary throughout the day or at the end of every day and disposed of in an appropriate manner.
Sediment shall NOT be washed into storm sewer systems.
Erosion Control Devices – Rolled erosion control products (nets, blankets, turf reinforcement mats) and
marginally vegetated areas (areas not meeting required vegetative densities for final stabilization) must
be inspected weekly. Rilling, rutting and other signs of erosion indicate the erosion control device is not
functioning properly and additional erosion control devices are warranted.
Material Storage Areas – Material storage areas should be located to minimize exposure to weather.
Inspections shall evaluate disturbed areas and areas used for storing materials that are exposed to
rainfall for evidence of, or the potential for, pollutants entering the drainage system or discharging from
the site. If necessary, the materials must be covered or original covers must be repaired or
supplemented. Also, protective berms must be constructed, if needed, in order to contain runoff from
material storage areas. All state and local regulations pertaining to material storage areas will be
adhered to.
Discharge Points – All discharge points must be inspected to determine whether erosion and sediment
control measures are effective in preventing discharge of sediment from the site or impacts to receiving
waters.
Control Measure Maintenance/Replacement and Failed Control Measures
The Colorado General Permit for Stormwater Discharges Associated with Construction Activity requires
that all erosion and sediment control practices and other protective measures identified in the SWMP be
maintained in effective operating condition and in accordance with good engineering, hydrologic and
Galloway & Company, Inc.Page 27 of 41
pollution control practices. Sediment that has been collected by sediment controls, such as silt fence and
inlet protection, shall be removed when observed to prevent failure of control measures, and remove the
potential of that sediment from being discharged from the site if the control measure did fail. Removed
sediment shall be properly disposed of on-site. Maintenance activities to correct problems noted during
inspections must be documented as discussed in the documentation section below. The inspection
process must also include procedures to ensure that, when needed, control measures are replaced or
new control measures added to adequately manage the pollutant sources at the site. This procedure is
part of the ongoing process of revising the control measures and the SWMP as discussed above, and any
changes to control measures must be recorded in the SWMP. The SWMP must be modified as soon as
practicable to reflect current conditions. Control measures that have failed or have the potential to fail
without maintenance or modifications must be addressed as soon as possible, immediately in most
cases, to prevent the discharge of pollutants. If it is infeasible to install or repair a control measure
immediately after discovering the deficiency, the following information must be documented and kept on
record:
1) Describe why it is infeasible to initiate the installation or repair immediately; and
2) Provide a schedule for installing or repairing the control measure and returning it to an effective
operating condition as soon as possible.
If applicable, the Permittee must remove and properly dispose of any unauthorized release or discharge
(e.g. discharge of non-stormwater, spill or leak not authorized by the Construction Stormwater Permit).
The Permittee must also clean up any contaminated surfaces to minimize discharges of the material in
subsequent storm events.
Record Keeping and Documentation
All erosion control measures and stabilizations shall be inspected weekly and after each precipitation or
snow melt event. The Permittee must document inspection results and maintain a record of the results for
a period of 3 years following closing of permit coverage. These records must be made available to the
Owner, the City & County, the State, or the EPA upon request. The following items must be documented
as part of the site inspections:
· The inspection date
· Name(s) and title(s) of personnel making the inspection
· Location(s) of discharges of sediment or other pollutants from the site
· Location(s) of control measures that need to be maintained
· Location(s) of control measures that failed to operate as designed or proved inadequate for a
particular location
· Location(s) where additional control measures are needed that were not in place at the time of
inspection
· Deviations from the minimum inspection schedule as indicated above
Galloway & Company, Inc.Page 28 of 41
· Description and dates of corrective actions taken including requisite changes to the SWMP
After adequate corrective action(s) has been taken, or where a report does not identify any incidents
requiring corrective action, the report shall contain a signed statement indicating the site is in compliance
with the permit to the best of the signer’s knowledge and belief.
Record 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 includes the time and date, weather
conditions, reasons for the spill, who the spill was reported to, etc.
A complete copy of the SWMP shall be kept with the inspection and maintenance records for the
aforementioned 3-year period.
X. Standard City of Fort Collins Erosion Control Notes
1) The Property Owner, Owner’s Representative, Developer, Design Engineer, General Contractor,
Sub-contractors, or similar title for the developing entity (here after referred to as the Developer) has
provided these Erosion Control Materials in accordance with Erosion Control Criteria set forth in the
Manual as an attempt to identify erosion, sediment, and other potential pollutant sources associated
with these Construction Activities and preventing those pollutants from leaving the project site as an
illicit discharge. Full City requirements and are outlined and clarified in the Manual under Chapter 4:
Construction Control Measures and should be used to identify and define what is needed on a
project.
2) The Developer shall make themselves thoroughly familiar with the provisions and the content of the
specifications laid out in the Manual, the Development Agreement, the Erosion Control Materials
compiled for this project, and the following notes as all these materials are applicable to this project.
3) The Developer shall implement and maintain Control Measures for all potential pollutants from the
start of land disturbing activities until final stabilization of the construction site.
4) The City Erosion Control Inspector shall be notified at least twenty-four (24) hours prior to the desired
start of any construction activities on this site to allow adequate time for on-site confirmation (initial
inspection which can take up to two business days after receiving the request) that the site is in fact
protected from sediment and pollutants discharges off site. Please contact erosion@fcgov.com early
to schedule those Initial Erosion Control Inspections well in advance so that demolition, clearing,
grubbing, tree removal, and scraping may begin without delay. Failure to receive an on-site
confirmation before construction activities commence is an automatic “Notice of Violation” and can
result in further enforcement actions.
5) The Developer shall proactively provide all appropriate Control Measures to prevent damage to
adjacent downstream and leeward properties. This includes but is not limited to: trees, shrubs, lawns,
Galloway & Company, Inc.Page 29 of 41
walks, pavements, roadways, structures, creeks, wetlands, streams, rivers, and utilities that are not
designed for removal, relocation, or replacement in the course of construction.
6) At all times the Developer shall be responsible to ensure adequate Control Measures are designed,
selected, installed, maintain, repaired, replaced, and ultimately removed in order to prevent and
control erosion suspension, sediment transportation, and pollutant discharge as a result of
construction activities associated with this project.
7) All applicable Control Measures based upon the sequencing and/or phasing of the project shall be
installed prior to those construction activities commencing.
8) As dynamic conditions (due to the nature, timing, sequence, and phasing of construction) in the field
may warrant Control Measures in addition, or different, to what is shown on these plans, the
Developer shall at all times be responsible to implement the Control Measures that are most effective
with the current state and progress of construction. The Developer shall implement whatever
measures are determined necessary, and/or as directed by the City Erosion Control Inspector. The
Developer shall insure that all Erosion Control Plans (Maps) or SWMP documents are updated to
reflect the current site conditions, with updates being initialed and dated. These site inspections and
site condition updates shall be made available upon request by the City.
9) All listings, provisions, materials, procedures, activities, site work and the like articulated in this or
other written site-specific documents (Including but not limited to the erosion control reports,
development agreements, landscape, and drainage materials) shall meet or exceed the most
restrictive language for City, County, State, and Federal regulations with regards to erosion,
sediment, pollutant, and other pollution source Control Measures. The Developer shall be responsible
to comply with all of these aforementioned laws and regulations.
10) The Developer shall ensure that all appropriate permits (CDPS General Permit Stormwater
Discharges Associated with Construction Activity, Dewatering, Clean Water Act, Army Corps of
Engineers’ 404 Wetlands Mitigation Permit, etc.) have been attained prior to the relevant activity has
begun. These permits or copies shall be made available upon request by the City.
11) The Developer shall furnish all conveniences and assistances to aid the Erosion Control Inspectors of
materials, workmanship, records, and self-inspections, etc. of the Control Measures involved in the
construction activities.
12) The Developer shall request clarification of all apparent site construction issues that may arise due to
inconsistencies in construction plans for the site or site conditions around the selected Control
Measures by contacting the Erosion Control Inspector. The Erosion Control Inspector will not be
responsible for any explanations, interpretations, or supplementary data provided by others.
13) All Control Measures shall be installed in accordance with the Manual.
14) The City reserves the right to require additional Control Measures as site conditions warrant, to the
extent authorized by relevant legal authority.
Galloway & Company, Inc.Page 30 of 41
15) As with any construction standards, occasions may arise where the minimum erosion control
standards are either inappropriate or cannot be justified. In these cases, a variance to these
standards may be applied for pursuant to the terms, conditions, and procedures of the Manual.
16) Inspection. The contractor shall inspect site pollutant sources and implement Control Measures at a
minimum of once every two weeks during construction and within 24 hours following a precipitation
event. Documentation of each inspection shall be recorded and retained by the contractor.
17) All temporary Control Measures shall be cleaned, repaired, or reconstructed as necessary in order to
assure continual performance of their intended function. All retained sediments, particularly those on
paved roadway surfaces, shall be removed and disposed of in a manner and location so as not to
cause their release into any drainage way.
18) Any Control Measure may be substituted for another standard Control Measure so long as that
Control Measure is equal to, or of greater protection than the original Control Measure that was to be
used in that location. (ex. silt fence, for wattles, or for compact berms) Wattle alone on commercial
construction sites have shown to be an ineffective substitute for silt fence or compact berms unless it
is accompanied by a construction fence to prevent vehicle traffic.
19) Any implementation or replacement of existing Control Measures for a non-standard control, or
alternative Control Measure, shall require the review and acceptance by the City erosion control staff
before the measure will be allowed to be used on this project. These Control Measures’ details shall
be submitted, reviewed and accepted to be in accordance with the Erosion Control Criteria based
upon the functionality and effectiveness in accordance with sound engineering and hydrological
practices.
Land disturbance, Stockpiles, and Storage of Soils
20) There shall be no earth-disturbing activity outside the limits designated on the accepted plans. Off
road staging areas or stockpiles must be preapproved by the City. Disturbances beyond these limits
will be restored to original condition.
21) 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 period of time. This should include sequencing and phasing
construction activities in a way so that the soil is not exposed for long periods of time by schedule or
limit grading to small areas. This should also include when practical advancing the schedule on
stabilization activities such that landscaping takes place shortly if not immediately after grading has
occurred. Vegetation efforts shall start as soon as possible to return the site to a stabilized condition.
Sensitive areas should avoid clearing and grading activities as much possible.
22) All exposed soils or disturbed areas are considered a potential pollutant and shall have Control
Measures implemented on the site to prevent materials from leaving the site.
Galloway & Company, Inc.Page 31 of 41
23) All soils exposed during land disturbing activity (stripping, grading, utility installations, stockpiling,
filling, etc.) shall be kept in a roughened condition at all times by equipment tracking, scarifying or
disking the surface on a contour with a 2 to 4 inch minimum variation in soil surface until mulch,
vegetation, and/or other permanent erosion control is installed.
24) No soil stockpile shall exceed ten (10) feet in height. All soil stockpiles shall be protected from
sediment transport through the use of surface roughening, watering, and down gradient perimeter
controls. All soil stockpiles shall be protected from sediment transport by wind in accordance with
Municipal Code §12-150. All stockpiles shall be flattened to meet grade or removed from site as soon
as practical, and no later than the completion of construction activities or abandonment of the project.
All off-site stockpile storage locations in City limits shall have a stockpile permit from the City
Engineering Department prior to using the area to store material. If frequent access from hardscape
to the stockpile is needed a structural tracking Control Measure shall be implemented.
25) All required Control Measures shall be installed prior to any land disturbing activity (stockpiling,
stripping, grading, etc.). All of the required erosion Control Measures must be installed at the
appropriate time in the construction sequence as indicated in the approved project schedule,
construction plans, and erosion control report.
26) All inlets, curb-cuts, culverts, and other storm sewer infrastructure which could be potentially
impacted by construction activities shall be protected with Control Measures. Material accumulated
from this Control Measure shall be promptly removed and in cases where the protection has failed,
the pipes shall be thoroughly cleaned out.
27) 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.
28) All exposed dirt shall have perimeter control. Any perimeter controls that drain off or has the ability to
be tracked onto the nearby hardscape shall have some form of effective sediment control as the, or
as part of the, perimeter control.
29) 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.
30) No soils shall remain exposed by land disturbing activity for more than thirty (30) days after activity
has ceased before required temporary seeding or permanent erosion control (e.g. seed/mulch,
landscaping, etc.) is installed. This is not just limited to projects that are abandoned; this includes any
project that is temporarily halted and no immediate activity is to resume within the next thirty (30)
days, unless otherwise approved by the City Erosion Control Inspector. During a season when
seeding does not produce vegetative cover, another temporary erosion control shall be implemented
with or until temporary seeding or permanent erosion control can be performed.
31) All individual lots shall have effective sediment controls located on the street side and any down
gradient side. Typically 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 different direction than the street, those individual lots will
Galloway & Company, Inc.Page 32 of 41
need protection on that down gradient side to prevent sediment from leaving the lot. See the
Individual Lot Details for further clarification.
Vehicle Tracking
32) At all points where vehicles exit or leave the exposed dirt area on to a hardscape or semi hardscape
(concrete, asphalt, road base, etc.) shall have installed at least one structural tracking Control
Measure to prevent vehicle tracking. All areas not protected by an adequate perimeter control shall
be considered a point where vehicles exit the site. Access points should be limited to as few
entrances as possible (All perimeter areas shall be protected from tracking activities).
33) In all areas that the structural tracking Control Measures fail to prevent vehicle tracking, collection and
proper disposal of that material is required. All inlets located near access points and affected by
tracking activities shall be prevented from the introduction of sediment into the drainage system.
34) City Municipal Code §20-62, among other things, prohibits the tracking, dropping, or depositing of
soils or any other material onto city streets by or from any source. City Municipal Code, §26-498,
among other things, prohibits the discharge of pollutants on public or private property if there is a
significant potential for migration of such pollutant. Therefore, all tracked or deposited materials
(intentional or inadvertent) are not permitted to remain on the street or gutter and shall be removed
and legally disposed of by the Developer in a timely and immediate manner. Dirt ramps installed in
the curb-lines are not exempt to these sections of code and shall not be permitted in the street right of
way (public or private).
35) If repeated deposit of material occurs on a site, additional structural tracking controls may be required
of the Developer by the City Erosion Control Inspector.
Loading and Unloading Operations
36) The Developer shall apply Control Measure to limit traffic (site worker or public) impacts and
proactively locate material delivered to the site in close proximity to the work area or immediately
incorporated in the construction to limit operational impacts to disturbed areas, vehicle tracking, and
sediment deposition that could impact water quality.
Outdoor Storage or Construction Site Materials, Building Materials, Fertilizers, and Chemicals
37) Any materials of a non-polluting nature (steel, rock, brick, lumber, etc.) shall be inspected for any
residue coming off the material during routine inspection and will generally be located where practical
at least fifty (50) feet from any permanent or interim drainage ways.
38) Any high environmental impact pollutant materials that have a high likelihood to result in discharge
when in contact with stormwater (lubricants, fuels, paints, solvents, detergents, fertilizers, chemical
sprays, bags of cement mix, etc.) should not be kept on site where practical. When not practical, they
Galloway & Company, Inc.Page 33 of 41
should be stored inside (vehicle, trailer, connex, building, etc.) and out of contact with stormwater or
stormwater runoff. Where not available, they shall be stored outside in a raised (high spots or on
pallets), covered (plastic or tarped), and sealed (leak proof container) in secondary containment
location. The secondary containment or other Control Measure shall be adequately sized, located,
where practical, at least fifty (50) feet from any permanent or interim stormwater structures or
drainage ways and shall be monitored as part of the routine inspections.
Vehicle and equipment maintenance and fueling
39) Parking, refueling, and maintenance of vehicles and equipment should be limited in one area of the
site to minimize possible spills and fuel storage areas. This area shall be located, where practical, at
least fifty (50) feet from any permanent or interim stormwater structures or drainage ways and shall
be monitored as part of the routine inspections. All areas shall keep spill kits and supplies close.
Significant Dust or Particulate generating Process
40) The property must be actively preventing the emission of fugitive dust at all times during construction
and vegetation activities. All land disturbing activities that result in fugitive dust shall be in
accordance with Municipal Code §12-150 to reduce the impacts to adjacent properties and
community health. All required practices shall be implemented, and additional ones shall be followed.
These practices include watering the sites and discontinuing construction activities until the wind
subsides as determined by any City Inspectors.
Concrete truck / equipment washing, including the concrete truck chute and associated fixtures
and equipment
41) All concrete and equipment washing shall use structural Control Measures appropriate to the volume
of wash and frequency of use. These Control Measures shall be located, where practical, at least fifty
(50) feet from any permanent or interim stormwater structures or drainage ways and shall be
monitored as part of the routine inspections. These areas shall be clearly identified and protected
from any wash from leaving the Control Measure. If frequent access from hardscape to the Control
Measure is to occur, a structural tracking Control Measure shall be implemented. These Control
Measures shall be frequently cleaned out.
42) The Developer is responsible for ensuring washing activity is taking place at the appropriate Control
Measure and site workers are not washing or dumping wash water on to the dirt or other uncontrolled
locations.
Dedicated Asphalt and concrete batch plants
43) Dedicated asphalt and concrete batch plants are not acceptable on construction sites within the City
of Fort Collins without an expressed written request and plan to reduce pollutants associated with that
Galloway & Company, Inc.Page 34 of 41
type of activity and approval by the City of Fort Collins specifically the Erosion Control Inspector. The
Developer shall inform the erosion control inspection staff of any dedicated asphalt, or concrete batch
plants that is to be used on site.
Concrete Saw Cutting Materials
44) Saw cutting material shall be in accordance with Municipal Code §12-150 for air emissions and all
water applications to the saw cutting shall prevent material from leaving the immediate site and
collected. These cutting locations, once dried, shall be swept and scraped of all material and shall
have proper and legal disposal.
Waste Materials Storage and Sanitary Facilities
45) Trash, debris, material salvage, and/or recycling areas shall be, where practical, at least fifty (50) feet
from any permanent or interim stormwater structures or drainage ways and shall be monitored as part
of the routine inspections. These facilities should be located out of the wind and covered as able.
Where not able to cover, locating said areas on the side of other structures to reduce exposure to
winds, and follow maximum loading guidelines as marked on the container. The Developer is required
to practice good housekeeping to keep the construction site free of litter, construction debris, and
leaking containers.
46) Sanitary facilities shall be prevented from tipping through the use of anchoring to the ground or
lashing to a stabilized structure. These facilities shall also be located as far as practical from an inlet,
curb cut, drainage swale or other drainage conveyances to prevent material transport from leaving
the local area. This consists of the facility being located, where practical, at least fifty (50) feet from
any permanent or interim drainage ways.
Other Site Operations and Potential Spill Areas
47) Spills: For those minor spills that; are less than the State’s reportable quantity for spills, stay within
the permitted area, and in no way threaten any stormwater conveyance, notify the City of Fort Collins
Utilities by email at erosion@fcgov.com or phone (970) 817-4770. For any significant, major, or
hazardous spills, notify the City of Fort Collins Utilities by phone only after Emergency Response
(911) has been notified and is on route, County Health Department (LCDHE) has been notified
through Larimer County Sheriff Dispatch (970) 416-1985, and the State Spill Hotline Incident
Reporting have been contacted 1-877-518-5608. Written documentation shall be provided to the City
within 5 days of the event. All spills shall be cleaned up immediately.
48) Selection of “plastic welded” erosion control blankets shall not be used in areas that wildlife, such as
snakes, are likely to be located as these have proven to cause entrapment issues.
Final stabilization and project completion
Galloway & Company, Inc.Page 35 of 41
49) Any stormwater facilities used as a temporary Control Measure will be restored and storm sewer lines
will be cleaned upon completion of the project and before turning the maintenance over to the Owner,
Homeowners Association (HOA), or other party responsible for long term maintenance of those
facility.
50) All final stabilization specifications shall be done in accordance with the Manual, Chapter 4:
Construction Control Measures.
51) All disturbed areas designed to be vegetated shall be amended, seeded & mulched, or landscaped as
specified in the landscape plans within 14 working days of final grading.
52) Soil in all vegetated (landscaped or seeded) areas, including parkways and medians shall comply
with all requirements set 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.
53) All seeding shall refer to landscaping plans for species mixture and application rates and depths
requirements.
54) All seed shall be drilled where practical to a depth based upon the seed type. Broadcast seeding shall
be applied at double the rate as prescribed for drill seeding and shall be lightly hand raked after
application. Hydroseeding may be substituted for drill seeding on slopes steeper than 3(H):1(V) or on
other areas not practical to drill seed and crimp and mulch. All hydroseeding must be conducted as
two separate processes of seeding and tackification. 55) All seeded areas must be mulched within
twenty-four (24) after planting. All mulch shall be mechanically crimped and or adequately applied
tackifier. The use of crimped mulch or tackifier may require multiple re-applications if not properly
installed or have weathered or degraded before vegetation has been established. Areas of
embankments having slopes greater 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 the steep slopes. During a season when
seeding does not produce vegetative cover, another temporary erosion control shall be implemented
along with, or until, temporary seeding or permanent erosion control can be performed.
55) The Developer shall warranty and maintain all vegetative measures for two growing seasons after
installation or until seventy percent (70%) vegetative cover has been established, whichever is longer
and meets all the Criteria outlined in the Fort Collins Stormwater Criteria Manual Chapter 4:
Construction Control Measures.
56) The Developer shall maintain, monitor, repair, and replace any and all applicable Control Measures
until final stabilization has been obtained. All Control Measures must remain until such time as all
upstream contributing pollutant sources have been vegetated or removed from the site. When any
Control Measure is removed, the Developer shall be responsible for the cleanup and removal of all
sediment and debris from that Control Measure. At the point at which the site has been deemed
stabilized and verified by City Erosion Control Inspector, all temporary Control Measures can then be
fully removed. All measures shall be removed within 30 days after final stabilization is achieved.
Galloway & Company, Inc.Page 36 of 41
57) The responsible party shall maintain and keep current all payments or related forms of security for the
Erosion Control Escrow until 1) stabilization has been reached and 2) all Control Measures and/or
BMPs have sediment materials collected and the Control Measure removed from the site. At that time
the site will be considered completed and any remaining Erosion Control Escrow shall be returned to
the appropriate parties.
XI. Conclusion
Conformance with Standards
The Stormwater Management report for Midtown Gardens Marketplace – King Soopers #146, was
prepared in compliance with the City of Fort Collins Stormwater Criteria Manual adopted December 2018
and the Colorado General Permit for Stormwater Discharges Associated with Construction Activity.
XII. References
1. City of Fort Collins Stormwater Criteria Manual adopted December 2018
2. Urban Storm Drainage Criteria Manual, Volume 3, Urban Drainage and Flood Control District,
revised October 2019.
3. General Permit Application and Stormwater Management Plan Preparation Guidance,
Colorado Department of Public Health and Environment, November 2018
Galloway & Company, Inc.Page 37 of 41
Appendix A – Reference Information
NRCS Web Soil Survey Information
FEMA FIRMette
United States
Department of
Agriculture
A product of the National
Cooperative Soil Survey,
a joint effort of the United
States Department of
Agriculture and other
Federal agencies, State
agencies including the
Agricultural Experiment
Stations, and local
participants
Custom Soil Resource
Report for
Larimer County
Area, ColoradoNatural
Resources
Conservation
Service
July 22, 2020
Preface
Soil surveys contain information that affects land use planning in survey areas.
They highlight soil limitations that affect various land uses and provide information
about the properties of the soils in the survey areas. Soil surveys are designed for
many different users, including farmers, ranchers, foresters, agronomists, urban
planners, community officials, engineers, developers, builders, and home buyers.
Also, conservationists, teachers, students, and specialists in recreation, waste
disposal, and pollution control can use the surveys to help them understand,
protect, or enhance the environment.
Various land use regulations of Federal, State, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil
properties that are used in making various land use or land treatment decisions.
The information is intended to help the land users identify and reduce the effects of
soil limitations on various land uses. The landowner or user is responsible for
identifying and complying with existing laws and regulations.
Although soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some
cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/
portal/nrcs/main/soils/health/) and certain conservation and engineering
applications. For more detailed information, contact your local USDA Service Center
(https://offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil
Scientist (http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/?
cid=nrcs142p2_053951).
Great differences in soil properties can occur within short distances. Some soils are
seasonally wet or subject to flooding. Some are too unstable to be used as a
foundation for buildings or roads. Clayey or wet soils are poorly suited to use as
septic tank absorption fields. A high water table makes a soil poorly suited to
basements or underground installations.
The National Cooperative Soil Survey is a joint effort of the United States
Department of Agriculture and other Federal agencies, State agencies including the
Agricultural Experiment Stations, and local agencies. The Natural Resources
Conservation Service (NRCS) has leadership for the Federal part of the National
Cooperative Soil Survey.
Information about soils is updated periodically. Updated information is available
through the NRCS Web Soil Survey, the site for official soil survey information.
The U.S. Department of Agriculture (USDA) prohibits discrimination in all its
programs and activities on the basis of race, color, national origin, age, disability,
and where applicable, sex, marital status, familial status, parental status, religion,
sexual orientation, genetic information, political beliefs, reprisal, or because all or a
part of an individual's income is derived from any public assistance program. (Not
all prohibited bases apply to all programs.) Persons with disabilities who require
2
alternative means for communication of program information (Braille, large print,
audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice
and TDD). To file a complaint of discrimination, write to USDA, Director, Office of
Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or
call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity
provider and employer.
3
Contents
Preface....................................................................................................................2
How Soil Surveys Are Made..................................................................................5
Soil Map..................................................................................................................8
Soil Map................................................................................................................9
Legend................................................................................................................10
Map Unit Legend................................................................................................11
Map Unit Descriptions.........................................................................................11
Larimer County Area, Colorado......................................................................13
73—Nunn clay loam, 0 to 1 percent slopes.................................................13
74—Nunn clay loam, 1 to 3 percent slopes.................................................14
References............................................................................................................16
4
How Soil Surveys Are Made
Soil surveys are made to provide information about the soils and miscellaneous
areas in a specific area. They include a description of the soils and miscellaneous
areas and their location on the landscape and tables that show soil properties and
limitations affecting various uses. Soil scientists observed the steepness, length,
and shape of the slopes; the general pattern of drainage; the kinds of crops and
native plants; and the kinds of bedrock. They observed and described many soil
profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The
profile extends from the surface down into the unconsolidated material in which the
soil formed or from the surface down to bedrock. The unconsolidated material is
devoid of roots and other living organisms and has not been changed by other
biological activity.
Currently, soils are mapped according to the boundaries of major land resource
areas (MLRAs). MLRAs are geographically associated land resource units that
share common characteristics related to physiography, geology, climate, water
resources, soils, biological resources, and land uses (USDA, 2006). Soil survey
areas typically consist of parts of one or more MLRA.
The soils and miscellaneous areas in a survey area occur in an orderly pattern that
is related to the geology, landforms, relief, climate, and natural vegetation of the
area. Each kind of soil and miscellaneous area is associated with a particular kind
of landform or with a segment of the landform. By observing the soils and
miscellaneous areas in the survey area and relating their position to specific
segments of the landform, a soil scientist develops a concept, or model, of how they
were formed. Thus, during mapping, this model enables the soil scientist to predict
with a considerable degree of accuracy the kind of soil or miscellaneous area at a
specific location on the landscape.
Commonly, individual soils on the landscape merge into one another as their
characteristics gradually change. To construct an accurate soil map, however, soil
scientists must determine the boundaries between the soils. They can observe only
a limited number of soil profiles. Nevertheless, these observations, supplemented
by an understanding of the soil-vegetation-landscape relationship, are sufficient to
verify predictions of the kinds of soil in an area and to determine the boundaries.
Soil scientists recorded the characteristics of the soil profiles that they studied. They
noted soil color, texture, size and shape of soil aggregates, kind and amount of rock
fragments, distribution of plant roots, reaction, and other features that enable them
to identify soils. After describing the soils in the survey area and determining their
properties, the soil scientists assigned the soils to taxonomic classes (units).
Taxonomic classes are concepts. Each taxonomic class has a set of soil
characteristics with precisely defined limits. The classes are used as a basis for
comparison to classify soils systematically. Soil taxonomy, the system of taxonomic
classification used in the United States, is based mainly on the kind and character
of soil properties and the arrangement of horizons within the profile. After the soil
5
scientists classified and named the soils in the survey area, they compared the
individual soils with similar soils in the same taxonomic class in other areas so that
they could confirm data and assemble additional data based on experience and
research.
The objective of soil mapping is not to delineate pure map unit components; the
objective is to separate the landscape into landforms or landform segments that
have similar use and management requirements. Each map unit is defined by a
unique combination of soil components and/or miscellaneous areas in predictable
proportions. Some components may be highly contrasting to the other components
of the map unit. The presence of minor components in a map unit in no way
diminishes the usefulness or accuracy of the data. The delineation of such
landforms and landform segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, onsite
investigation is needed to define and locate the soils and miscellaneous areas.
Soil scientists make many field observations in the process of producing a soil map.
The frequency of observation is dependent upon several factors, including scale of
mapping, intensity of mapping, design of map units, complexity of the landscape,
and experience of the soil scientist. Observations are made to test and refine the
soil-landscape model and predictions and to verify the classification of the soils at
specific locations. Once the soil-landscape model is refined, a significantly smaller
number of measurements of individual soil properties are made and recorded.
These measurements may include field measurements, such as those for color,
depth to bedrock, and texture, and laboratory measurements, such as those for
content of sand, silt, clay, salt, and other components. Properties of each soil
typically vary from one point to another across the landscape.
Observations for map unit components are aggregated to develop ranges of
characteristics for the components. The aggregated values are presented. Direct
measurements do not exist for every property presented for every map unit
component. Values for some properties are estimated from combinations of other
properties.
While a soil survey is in progress, samples of some of the soils in the area generally
are collected for laboratory analyses and for engineering tests. Soil scientists
interpret the data from these analyses and tests as well as the field-observed
characteristics and the soil properties to determine the expected behavior of the
soils under different uses. Interpretations for all of the soils are field tested through
observation of the soils in different uses and under different levels of management.
Some interpretations are modified to fit local conditions, and some new
interpretations are developed to meet local needs. Data are assembled from other
sources, such as research information, production records, and field experience of
specialists. For example, data on crop yields under defined levels of management
are assembled from farm records and from field or plot experiments on the same
kinds of soil.
Predictions about soil behavior are based not only on soil properties but also on
such variables as climate and biological activity. Soil conditions are predictable over
long periods of time, but they are not predictable from year to year. For example,
soil scientists can predict with a fairly high degree of accuracy that a given soil will
have a high water table within certain depths in most years, but they cannot predict
that a high water table will always be at a specific level in the soil on a specific date.
After soil scientists located and identified the significant natural bodies of soil in the
survey area, they drew the boundaries of these bodies on aerial photographs and
Custom Soil Resource Report
6
identified each as a specific map unit. Aerial photographs show trees, buildings,
fields, roads, and rivers, all of which help in locating boundaries accurately.
Custom Soil Resource Report
7
Soil Map
The soil map section includes the soil map for the defined area of interest, a list of
soil map units on the map and extent of each map unit, and cartographic symbols
displayed on the map. Also presented are various metadata about data used to
produce the map, and a description of each soil map unit.
8
9
Custom Soil Resource Report
Soil Map
44890604489100448914044891804489220448926044893004489340448938044894204489060448910044891404489180448922044892604489300448934044893804489420493220 493260 493300 493340 493380 493420 493460 493500
493220 493260 493300 493340 493380 493420 493460 493500
40° 33' 19'' N 105° 4' 48'' W40° 33' 19'' N105° 4' 36'' W40° 33' 7'' N
105° 4' 48'' W40° 33' 7'' 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 25 50 100 150
Meters
Map Scale: 1:1,820 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
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
73 Nunn clay loam, 0 to 1 percent
slopes
16.4 99.1%
74 Nunn clay loam, 1 to 3 percent
slopes
0.2 0.9%
Totals for Area of Interest 16.5 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
Custom Soil Resource Report
11
onsite investigation is needed to define and locate the soils and miscellaneous
areas.
An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such differences, a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series. The name of a soil phase
commonly indicates a feature that affects use or management. For example, Alpha
silt loam, 0 to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha-Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
Custom Soil Resource Report
12
Larimer County Area, Colorado
73—Nunn clay loam, 0 to 1 percent slopes
Map Unit Setting
National map unit symbol: 2tlng
Elevation: 4,100 to 5,700 feet
Mean annual precipitation: 14 to 15 inches
Mean annual air temperature: 48 to 52 degrees F
Frost-free period: 135 to 152 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Nunn and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Nunn
Setting
Landform: Terraces
Landform position (three-dimensional): Tread
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Pleistocene aged alluvium and/or eolian deposits
Typical profile
Ap - 0 to 6 inches: clay loam
Bt1 - 6 to 10 inches: clay loam
Bt2 - 10 to 26 inches: clay loam
Btk - 26 to 31 inches: clay loam
Bk1 - 31 to 47 inches: loam
Bk2 - 47 to 80 inches: loam
Properties and qualities
Slope: 0 to 1 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately low to
moderately high (0.06 to 0.20 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 7 percent
Salinity, maximum in profile: Nonsaline (0.1 to 1.0 mmhos/cm)
Sodium adsorption ratio, maximum in profile: 0.5
Available water storage in profile: High (about 9.1 inches)
Interpretive groups
Land capability classification (irrigated): 3e
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: C
Ecological site: Clayey Plains (R067BY042CO)
Hydric soil rating: No
Custom Soil Resource Report
13
Minor Components
Heldt
Percent of map unit: 10 percent
Landform: Terraces
Landform position (three-dimensional): Tread
Down-slope shape: Linear
Across-slope shape: Linear
Ecological site: Clayey Plains (R067BY042CO)
Hydric soil rating: No
Wages
Percent of map unit: 5 percent
Landform: Terraces
Landform position (three-dimensional): Tread
Down-slope shape: Linear
Across-slope shape: Linear
Ecological site: Loamy Plains (R067BY002CO)
Hydric soil rating: No
74—Nunn clay loam, 1 to 3 percent slopes
Map Unit Setting
National map unit symbol: 2tlpl
Elevation: 3,900 to 5,840 feet
Mean annual precipitation: 13 to 17 inches
Mean annual air temperature: 50 to 54 degrees F
Frost-free period: 135 to 160 days
Farmland classification: Prime farmland if irrigated
Map Unit Composition
Nunn and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Nunn
Setting
Landform: Terraces
Landform position (three-dimensional): Tread
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Pleistocene aged alluvium and/or eolian deposits
Typical profile
Ap - 0 to 9 inches: clay loam
Bt - 9 to 13 inches: clay loam
Btk - 13 to 25 inches: clay loam
Bk1 - 25 to 38 inches: clay loam
Bk2 - 38 to 80 inches: clay loam
Custom Soil Resource Report
14
Properties and qualities
Slope: 1 to 3 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Moderately low to
moderately high (0.06 to 0.20 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 7 percent
Salinity, maximum in profile: Nonsaline to very slightly saline (0.1 to 2.0
mmhos/cm)
Sodium adsorption ratio, maximum in profile: 0.5
Available water storage in profile: High (about 9.9 inches)
Interpretive groups
Land capability classification (irrigated): 2e
Land capability classification (nonirrigated): 3e
Hydrologic Soil Group: C
Ecological site: Clayey Plains (R067BY042CO)
Hydric soil rating: No
Minor Components
Heldt
Percent of map unit: 10 percent
Landform: Terraces
Landform position (three-dimensional): Tread
Down-slope shape: Linear
Across-slope shape: Linear
Ecological site: Clayey Plains (R067BY042CO)
Hydric soil rating: No
Satanta
Percent of map unit: 5 percent
Landform: Terraces
Landform position (three-dimensional): Tread
Down-slope shape: Linear
Across-slope shape: Linear
Ecological site: Loamy Plains (R067BY002CO)
Hydric soil rating: No
Custom Soil Resource Report
15
References
American Association of State Highway and Transportation Officials (AASHTO).
2004. Standard specifications for transportation materials and methods of sampling
and testing. 24th edition.
American Society for Testing and Materials (ASTM). 2005. Standard classification of
soils for engineering purposes. ASTM Standard D2487-00.
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of
wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife
Service FWS/OBS-79/31.
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Federal Register. September 18, 2002. Hydric soils of the United States.
Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric
soils in the United States.
National Research Council. 1995. Wetlands: Characteristics and boundaries.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service.
U.S. Department of Agriculture Handbook 18. http://www.nrcs.usda.gov/wps/portal/
nrcs/detail/national/soils/?cid=nrcs142p2_054262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Department of Agriculture Handbook 436. http://
www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of
Engineers wetlands delineation manual. Waterways Experiment Station Technical
Report Y-87-1.
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/
home/?cid=nrcs142p2_053374
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/
detail/national/landuse/rangepasture/?cid=stelprdb1043084
16
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/
nrcs/detail/soils/scientists/?cid=nrcs142p2_054242
United States Department of Agriculture, Natural Resources Conservation Service.
2006. Land resource regions and major land resource areas of the United States,
the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook
296. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?
cid=nrcs142p2_053624
United States Department of Agriculture, Soil Conservation Service. 1961. Land
capability classification. U.S. Department of Agriculture Handbook 210. http://
www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf
Custom Soil Resource Report
17
Galloway & Company, Inc.Page 38 of 41
Appendix B – SWMP Site Maps and Calculations
SWMP Site Maps and Details
CO
CO
E
EVT
ECB
GM
E
E
E
E
TL
TL
E
TL
GM
IR
TL
WM
CO
-
-
-
-
-
-
-
-
-
-
-
-
-
-
STAMP
H:\King Soopers - City Market\CO, Fort Collins - KSS000146 -#18 College & Drake\CADD\3-CD\Kss146X-Eros-Initial.dwg - Cayla Cappello - 2/2/2021Init.#Issue / DescriptionDate
THESE PLANS ARE AN INSTRUMENT OF SERVICE
AND ARE THE PROPERTY OF GALLOWAY, AND MAY
NOT BE DUPLICATED, DISCLOSED, OR REPRODUCED
WITHOUT THE WRITTEN CONSENT OF GALLOWAY.
COPYRIGHTS AND INFRINGEMENTS WILL BE
ENFORCED AND PROSECUTED.
COPYRIGHT
GallowayUS.com
6162 S. Willow Drive, Suite 320
Greenwood Village, CO 80111
303.770.8884
PRELIMINARYNOT FOR BIDDINGNOT FOR CONSTRUCTIONDate:
Drawn By:
Project No:
Checked By:
KSS000146FINAL UTILITY PLANS FORMIDTOWN GARDENS MARKETPLACEKING SOOPERS MARKETPLACE #146S. COLLEGE AVE. & DRAKE RD.FORT COLLINS, COLORADOFEBRUARY 3, 2021
RDG
PJD
C3.0
EROSION CONTROL
PLAN - INITIAL
SCALE: 1"=50'
0 20 5010
CO
CO
E
EVT
ECB
GM
E
E
E
E
TL
TL
E
TL
GM
IR
TL
WM
CO
-
-
-
-
-
-
-
-
-
-
-
-
-
-
STAMP
H:\King Soopers - City Market\CO, Fort Collins - KSS000146 -#18 College & Drake\CADD\3-CD\Kss146X-Eros-Interim.dwg - Cayla Cappello - 2/3/2021Init.#Issue / DescriptionDate
THESE PLANS ARE AN INSTRUMENT OF SERVICE
AND ARE THE PROPERTY OF GALLOWAY, AND MAY
NOT BE DUPLICATED, DISCLOSED, OR REPRODUCED
WITHOUT THE WRITTEN CONSENT OF GALLOWAY.
COPYRIGHTS AND INFRINGEMENTS WILL BE
ENFORCED AND PROSECUTED.
COPYRIGHT
GallowayUS.com
6162 S. Willow Drive, Suite 320
Greenwood Village, CO 80111
303.770.8884
PRELIMINARYNOT FOR BIDDINGNOT FOR CONSTRUCTIONDate:
Drawn By:
Project No:
Checked By:
KSS000146FINAL UTILITY PLANS FORMIDTOWN GARDENS MARKETPLACEKING SOOPERS MARKETPLACE #146S. COLLEGE AVE. & DRAKE RD.FORT COLLINS, COLORADOFEBRUARY 3, 2021
RDG
PJD
C3.1
EROSION CONTROL
PLAN - INTERIM
SCALE: 1"=50'
0 20 5010
CO
CO
E
EVT
ECB
GM
E
E
E
E
TL
TL
E
TL
GM
IR
TL
WM
CO
-
-
-
-
-
-
-
-
-
-
-
-
-
-
STAMP
H:\King Soopers - City Market\CO, Fort Collins - KSS000146 -#18 College & Drake\CADD\3-CD\Kss146X-Eros-Final.dwg - Cayla Cappello - 2/3/2021Init.#Issue / DescriptionDate
THESE PLANS ARE AN INSTRUMENT OF SERVICE
AND ARE THE PROPERTY OF GALLOWAY, AND MAY
NOT BE DUPLICATED, DISCLOSED, OR REPRODUCED
WITHOUT THE WRITTEN CONSENT OF GALLOWAY.
COPYRIGHTS AND INFRINGEMENTS WILL BE
ENFORCED AND PROSECUTED.
COPYRIGHT
GallowayUS.com
6162 S. Willow Drive, Suite 320
Greenwood Village, CO 80111
303.770.8884
PRELIMINARYNOT FOR BIDDINGNOT FOR CONSTRUCTIONDate:
Drawn By:
Project No:
Checked By:
KSS000146FINAL UTILITY PLANS FORMIDTOWN GARDENS MARKETPLACEKING SOOPERS MARKETPLACE #146S. COLLEGE AVE. & DRAKE RD.FORT COLLINS, COLORADOFEBRUARY 3, 2021
RDG
PJD
C3.2
EROSION CONTROL
PLAN - FINAL
SCALE: 1"=50'
0 20 5010
-
-
-
-
-
-
-
-
-
-
-
-
-
-
STAMP
H:\King Soopers - City Market\CO, Fort Collins - KSS000146 -#18 College & Drake\CADD\3-CD\Kss146X-Eros-Dets.dwg - Cayla Cappello - 2/2/2021Init.#Issue / DescriptionDate
THESE PLANS ARE AN INSTRUMENT OF SERVICE
AND ARE THE PROPERTY OF GALLOWAY, AND MAY
NOT BE DUPLICATED, DISCLOSED, OR REPRODUCED
WITHOUT THE WRITTEN CONSENT OF GALLOWAY.
COPYRIGHTS AND INFRINGEMENTS WILL BE
ENFORCED AND PROSECUTED.
COPYRIGHT
GallowayUS.com
6162 S. Willow Drive, Suite 320
Greenwood Village, CO 80111
303.770.8884
PRELIMINARYNOT FOR BIDDINGNOT FOR CONSTRUCTIONDate:
Drawn By:
Project No:
Checked By:
KSS000146FINAL UTILITY PLANS FORMIDTOWN GARDENS MARKETPLACEKING SOOPERS MARKETPLACE #146S. COLLEGE AVE. & DRAKE RD.FORT COLLINS, COLORADOFEBRUARY 3, 2021
RDG
PJD
C3.3
EROSION CONTROL
PLAN - DETAILS-1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
STAMP
H:\King Soopers - City Market\CO, Fort Collins - KSS000146 -#18 College & Drake\CADD\3-CD\Kss146X-Eros-Dets.dwg - Cayla Cappello - 2/2/2021Init.#Issue / DescriptionDate
THESE PLANS ARE AN INSTRUMENT OF SERVICE
AND ARE THE PROPERTY OF GALLOWAY, AND MAY
NOT BE DUPLICATED, DISCLOSED, OR REPRODUCED
WITHOUT THE WRITTEN CONSENT OF GALLOWAY.
COPYRIGHTS AND INFRINGEMENTS WILL BE
ENFORCED AND PROSECUTED.
COPYRIGHT
GallowayUS.com
6162 S. Willow Drive, Suite 320
Greenwood Village, CO 80111
303.770.8884
PRELIMINARYNOT FOR BIDDINGNOT FOR CONSTRUCTIONDate:
Drawn By:
Project No:
Checked By:
KSS000146FINAL UTILITY PLANS FORMIDTOWN GARDENS MARKETPLACEKING SOOPERS MARKETPLACE #146S. COLLEGE AVE. & DRAKE RD.FORT COLLINS, COLORADOFEBRUARY 3, 2021
RDG
PJD
C3.4
EROSION CONTROL
PLAN - DETAILS-2
Galloway & Company, Inc.Page 39 of 41
Appendix C – Inspection Report
State Inspection Report Template
Galloway & Company, Inc.Page 40 of 41
Appendix D – Spill and Prevention Control
Spill Prevention and Control Plan
Site Spill Log
Galloway & Company, Inc.Page 1 of 5
5265 Ronald Reagan Blvd., Suite 210
Johnstown, CO 80534
970.800.3300 •GallowayUS.com
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
improvements at Midtown Gardens Marketplace – King Soopers # 146, and associated thereto. This
plan will be implemented to meet the requirements of the City of Fort Collins and the State of Colorado.
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 control measures used to reduce and minimize
the runoff of contaminants. Control measures such as silt fence and sediment control logs will be
installed according to City of Fort Collins criteria using the details shown on the SWMP 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:
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
Galloway & Company, Inc.Page 2 of 5
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.
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
Galloway & Company, Inc.Page 3 of 5
7. Notify the supervisor of the spill and provide the information from Item #6. The supervisor will
then contact the City of Fort Collins and Larimer County.
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.
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
10. Provide the supervisor (or designated employee) with the information from Item #9. The
supervisor will then contact the City of Fort Collins and Larimer County.
Galloway & Company, Inc.Page 4 of 5
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:
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 329c(F3)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.
Galloway & Company, Inc.Page 5 of 5
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 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
Poudre Fire Authority 911
Fort Collins 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
Larimer County Sheriff’s Office 970-498-5100
City of Fort Collins 970-416-2632
It is the responsibility of the supervisor to contact the City of Fort Collins and Larimer County, 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 40CFR 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 five 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.
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.
Galloway & Company, Inc.Page 41 of 41
Appendix E – Erosion Control Ecsrow
Project:Disturbed Acres:12.12
EROSION CONTROL BMPs Units
Estimated
Quantity
Unit
Price
Total
Price
LF 2614 $2.50 $6,535.00
Each 16 $150.00 $2,400.00
Each 1 $200.00 $200.00
Each 1 $1,000.00 $1,000.00
SY 1636 $2.00 $3,272.00
Each 12 $25.00 $300.00
LF 3123 $2.00 $6,246.00
Sub-Total:$19,953.00
1.5 x Sub-Total:$29,929.50
Amount of security:$29,929.50
Total Acres x Price/acre:$18,180.00
$1,500.00 Sub-Total:$18,180.00
1.5 x Sub-Total:$27,270.00
Amount to Re-seed:$27,270.00
Minimum escrow amount:$3,000.00
Erosion Control Escrow:$29,929.50
Fields in yellow should be amended for this project.
Erosion and Sediment Control Escrow/Security Calculation
for The City of Fort Collins
BMP Amount
Silt Fence (SF)
Vehicle Tracking Control (VTC)
Construction Fence
Reseeding Amount
Rock Sock (RS)
Miniumum Escrow Amount
King Soopers #146
Unit Price of Seeding per acre:
“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)
Final Escrow Amount
Stabilized Staging Area (SSA)
2/2/2021 9:13 PM C:\Users\phil_dalrymple\Desktop\KS 146 Erosion Control\Escrow Calculator.xls