HomeMy WebLinkAboutBROWNS ON HOWES - PDP/FDP - FDP140019 - SUBMITTAL DOCUMENTS - ROUND 4 - STORMWATER MANAGEMENT PLANSTORMWATER MANAGEMENT PLAN (SWMP)
Brownes on Howes
Fort Collins, CO
February 18, 2015
Prepared for:
Maxiiimo Development Group
706 S. College Avenue, Suite 201
Fort Collins, CO 8024
Prepared by:
200 South College Avenue, Suite 10
Fort Collins, Colorado 80524
Phone: 970.221.4158 Fax: 970.221.4159
www.northernengineering.com
Project Number: 1033-001
P This Drainage Report is consciously provided as a PDF.
Please consider the environment before printing this document in its entirety.
When a hard copy is absolutely necessary, we recommend double-sided printing.
February 18, 2015
Maxiiimo Development Group
706 S. College Avenue, Suite 201
Fort Collins, CO 8024
RE: Stormwater Management Plan
Brownes on Howes
To Whom It May Concern:
Northern Engineering Services, Inc. is pleased to submit this Stormwater Management Plan for
Brownes on Howes. This report outlines Best Management Practices (BMPs) to be implemented
with the proposed construction in order to minimize potential pollutants in stormwater discharges.
We have prepared this report to accompany the Colorado Department of Public Health and
Environment General Permit for Stormwater Discharge Associated with Construction Activities (aka,
Stormwater Discharge Permit or SDP). The General Permit No. for this SDP is (to be filled-in by
permittee) and the Certification No. for this SDP is (to be filled-in by permittee). The Permit
Certification is Effective beginning (to be filled-in by permittee), and initial certification expires (to be
filled-in by permittee). A copy of the issuance cover letter can be found in the Appendix D of this
document (to be provided by permittee).
Please note: this Stormwater Management plan (including the Site Maps) is not a static document.
It is a dynamic device that should be kept current and logged as construction takes place. As such,
this version was prepared to facilitate initial plan approvals and permitting, but does not necessarily
reflect the final version, or the transitions throughout the construction process. As the site develops
and changes, the Contractor is expected and encouraged to make changes to what is contained
herein so that the SWMP works as effectively and efficiently as possible. It shall be the
responsibility of the SWMP Administrator and/or the permit holder (or applicant thereof) to ensure
the plan is properly maintained and followed.
If you should have any questions or comments as you review this report, please feel free to contact
us at your convenience.
Sincerely,
NORTHERN ENGINEERING SERVICES, INC.
Cody Snowdon
Brownes on Howes
Stormwater Management Plan
TABLE OF CONTENTS
Vicinity Map
1.0 General Requirements..............................................................................................1
1.1 Objectives...............................................................................................................1
1.2 SMWP Availability ...................................................................................................1
1.3 Definitions ..............................................................................................................1
1.4 Additional Permitting ................................................................................................1
2.0 Narrative Site Description .........................................................................................2
2.1 Existing Site Description ............................................................................................2
2.2 Nature of Construction Activity ...................................................................................2
2.3 Sequence of Major Activities ......................................................................................2
2.4 Site Disturbance ......................................................................................................2
2.5 Existing Data...........................................................................................................3
2.6 Existing Vegetation ...................................................................................................3
2.7 Potential Pollution Sources ........................................................................................3
2.8 Non-stormwater discharges .......................................................................................4
2.9 Receiving Waters .....................................................................................................4
3.0 Stormwater Management Controls .............................................................................4
3.1 SWMP Administrator ................................................................................................4
3.2 Best Management Practices (BMP’s) for Stormwater Pollution Prevention .........................5
3.3 Structural Practices for Erosion and Sediment Control ....................................................5
3.4 Non-Structural Practices for Erosion and Sediment Control .............................................7
3.5 Phased BMP Installation ...........................................................................................9
3.6 Material Handling and Spill Prevention ...................................................................... 10
3.7 Dedicated Concrete or Asphalt Batch Plant ................................................................ 11
3.8 Vehicle Tracking Control ......................................................................................... 11
3.9 Waste Management and Disposal ............................................................................. 11
3.10 Groundwater and Stormwater Dewatering .................................................................. 11
4.0 Final Stabilization and Long-Term Stormwater Management ....................................... 12
4.1 Final Stabilization .................................................................................................. 12
4.2 Long-Term Stormwater Management ......................................................................... 12
5.0 Inspection, Maintenance and Record Keeping ........................................................... 12
5.1 BMP Inspection ..................................................................................................... 12
5.2 BMP Maintenance ................................................................................................. 12
5.3 Record Keeping ..................................................................................................... 13
6.0 Additional SWMP and BMP Resources ..................................................................... 15
References 16
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Stormwater Management Plan
LIST OF TABLES:
Table 1 – Preliminary Permit and Construction Schedule ........................................................ 10
APPENDICES:
APPENDIX A – Site Maps
APPENDIX B – Erosion Control Details
APPENDIX C – Landscape Plan
APPENDIX D – Copies of Permits/Applications
APPENDIX E – Inspection Logs
APPENDIX F – Contractor Inserts (as needed)
APPENDIX G – Contractor Inserts (as needed)
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Stormwater Management Plan 1
1.0 General Requirements
1.1 Objectives
The objective of a Stormwater Management Plan (SWMP) is to identify all potential sources of
pollution likely to occur as a result of construction activity associated with the site construction, and
to describe the practices that will be used to reduce the pollutants in stormwater discharges from
the site. The SWMP must be completed and implemented at the time the project breaks ground,
and revised as necessary as construction proceeds to accurately reflect the conditions and practices
at the site.
This report summarizes the Stormwater Management Plan for the construction activity that will
occur with Brownes on Howes in Fort Collins, CO. This plan has been prepared according to
regulations of the Colorado Department of Public Health and Environment (CDPHE), Water Quality
Control Division.
1.2 SMWP Availability
This report is intended to remain on the aforementioned construction site to allow for maintenance
and inspection updates, and for review during inspection.
1.3 Definitions
BMP – Best Management Practice encompassing a wide range of erosion and sediment control
practices, both structural and non-structural in nature, which are intended to reduce or eliminate
any possible water quality impacts from stormwater leaving a construction site.
Erosion Control BMPs – Practices that PREVENT the erosion of soil, such as minimizing the amount
of disturbed area through phasing, temporary stabilization, and preserving existing vegetation.
Sediment Control BMP’s – Practices to REMOVE sediment from runoff, such as sediment basins,
silt fence, or inlet protection.
Non-structural BMP’s – The implementation of methods, practices, and procedures to minimize
water quality impacts, such as the preservation of natural vegetation, preventive maintenance and
spill response procedures.
Structural BMP’s – Physical devices that prevent or minimize water quality impacts, such as
sediment basins, inlet protection, or silt fence.
1.4 Additional Permitting
As mentioned above, this Stormwater Management Plan is associated with the Colorado
Department of Public Health and Environment Stormwater Permit that is issued by the Water
Quality Control Division of the CDPHE. Additional Environmental permitting not described in this
report may be required as a part of this project. An example is the Construction Dewatering Permit
for groundwater. Another example is the Air Pollution Emission Notice (APEN). The CDPHE
website contains links to both of these permits, as well as many other potential permits. The
Contractor is responsible for ensuring the proper permits are acquired.
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Stormwater Management Plan 2
2.0 Narrative Site Description
2.1 Existing Site Description
The project site consists of Lots 4 & 5, Block 43, City of Fort Collins which is located in Section 11,
Township 7 North, Range 69 West of the 6th Principal Meridian, in the City of Fort Collins, Larimer
County, Colorado. The existing site consists of one existing building located in the northwest corner
and a gravel parking lot. The site is bounded to the north by a single-family residence, to the east
by Howes Street, to the south by a commercial building and parking lot and to the west by a public
alley.
2.2 Wind and Rainfall Erodibility
The site is located within a moderate risk Erodibility Zone per the City of Fort Collins Wind
Erodibility Map. According to the Natural Resources Conservation Service website -
www.websoilsurvey.nrcs.usda.gov, the applicable soil erosion factor (K), which indicates the susceptibility
of a soil to sheet and rill erosion, is 0.15. This value is indicative of soils moderately susceptible to
rainfall erosion.
Impervious area (i.e., roof area, concrete walks and asphalt parking area) and landscaping will
permanently stabilize the areas disturbed by the proposed construction activity; therefore, the
likelihood of erosion and sediment problems occurring on-site is minimal. Most of the proposed
landscaped area is situated between the proposed structure and Timberline Road & Dixon Canyon
Lateral. During the interim period, in which the disturbed areas are open, the BMPs described
herein were selected to prevent erosion and limit sediment migration.
2.3 Nature of Construction Activity
The impetus of the project is to remove the existing building and the removal of the existing gravel
parking lot. The installation, removal/replacement, or re-routing of existing utilities (e.g., electric,
gas, sanitary sewer, domestic water and storm drain) will occur next. While building foundations are
being constructed, concrete curbs will be installed around drive aisle. The paving in the drive area
will likely follow completion of exterior construction. The fine grading of the landscaped areas and
the installation of retaining walls and landscaping will mark the completion of the construction
activities.
2.4 Sequence of Major Activities
To complete the project, many basic categories of construction activity will take place. As
previously mentioned, the first part of the project will consist of the necessary demolition and
removals of the parking area and existing building. Within this phase, protection will need to be
supplied to the existing trees, as well as other perimeter protection. With the surroundings, type of
perimeter protection will vary due to the differing types of ground material. It will be the
Contractor’s responsibility to implement the appropriate measure to suit the installation and type of
ground material. This will be followed by utility installation and foundation excavation. Vertical
construction of the residential building will commence after foundation and underground work is
complete. New curb/gutter, paving, and sidewalks are expected to begin after the building is dried
in and trades move inside. The final stages of site construction will be fine grading of the areas
around the buildings, and the installation of landscaping throughout the project. The
aforementioned sequencing is an initial best guess, and is subject to change at the Contractor’s
discretion.
2.5 Site Disturbance
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The property, Lot s 4 & 5, is approximately 0.436 acres. While much of the improvements is
confined to the property boundary some improvements will occur off site disturbing a total area of
0.493 acres. Site disturbance is essentially limited to the removal and replacement of existing
structures and pavements. The area of significant site grading or cuts/fills will occur along the
southern boundary of the site.
2.6 Existing Data
In order to complete the associated construction plans, a topographical survey of the site was
completed. This survey consisted of field measurements made by Northern Engineering Services on
April 18, 2013.
In addition to the field survey, the Natural Resources Conservation Service (NRCS) Soil Survey was
used to determine existing soil types found on-site. According to the NRCS Soil Survey, the site
consists entirely of Paoli fine sandy loam. The Paoli fine sandy loam is classified as Hydrologic Soil
Group A.
2.7 Existing Vegetation
The existing site is over 80% covered with hard surfaces (rooftop, gravel, etc.) with the remaining
area covered in native grasses. It is highly recommended that pre-construction photos be taken to
clearly document vegetative conditions prior to any disturbance activities.
2.8 Potential Pollution Sources
As is typical with most construction sites, there are a number of potential pollution sources which
could affect water quality. It is not possible for this report to identify all materials that will be used
or stored on the construction site. It is the sole responsibility of the Contractor to identify and
properly handle all materials that are potential pollution sources. The following are some common
examples of potential pollution sources:
· Exposed and stored soils
· Management of contaminated soils
· Off-site tracking of soils and sediment
· Loading and unloading operations
· Outdoor storage of building materials, fertilizers, chemicals, etc.
· Vehicle and equipment maintenance and fueling
· Significant dust or particulate generating processes
· Routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc.
· On-site waste disposal practices (waste piles, dumpsters, etc.)
· Concrete truck/equipment washing
· Non-industrial waste sources that may be significant, such as worker trash and portable toilets
· Uncovered trash bins
· Other areas or procedures where potential spills can occur
· Stockpiling of materials that can be transported to receiving waterway(s)
Management of Contaminated Soils: We are not aware of on-site contaminated soils. However, the
contractor should conduct a thorough, pre-construction environmental site assessment. If
contaminated soils are discovered, the contractor will identify appropriate practices and procedures
for the specific contaminants discovered on-site.
Loading and Unloading Operations: During site demolition, material loading and unloading will
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occur on-site. As site development and building construction progresses, space constraints will limit
the number of on-site locations for loading and unloading activities to the building from Redwing
Road and Drake Road. The contractor will be responsible for the proper handling and management
of pollution sources during loading and unloading operations.
Dedicated Asphalt and Concrete Batch Plants: Neither a dedicated asphalt or concrete batch plant
will be constructed on-site.
2.9 Non-stormwater discharges
The Stormwater Construction Permit only covers discharges composed entirely of stormwater.
Emergency firefighting water is the only authorized exception. Concrete Washout water can NOT be
discharged to surface waters or to storm sewer systems without separate permit coverage. The
discharge of Concrete Washout water to the ground, under specific conditions, may be allowed by
the Stormwater Construction Permit when appropriate BMPs are implemented.
The discharge of pumped stormwater, ONLY, from excavations, ponds, depressions, etc. to surface
waters, or to a municipal storm sewer system is allowed by the Stormwater Construction Permit, as
long as the dewatering activity and associated BMPs are identified in the Stormwater Management
Plan (SWMP) and are implemented in accordance with the SWMP.
Aside from the exceptions noted above, non-stormwater discharges must be addressed in a separate
permit issued for that discharge. If groundwater is encountered, and dewatering is required, a
Construction Dewatering Permit must be acquired from the Colorado Department of Public Health
and Environment.
2.10 Receiving Waters
Stormwater runoff from this project is designed to drain in one major direction. The drainage is
routed to the proposed drive aisle and permeable paver section, with the remaining areas being
small landscape buffers. The runoff within the parking lot is routed to a proposed inlet located along
the northern curb line. This storm sewer discharges directly into the City of Fort Collins Storm
Sewer System. Once the runoff is within City’s System, it travels through the system roughly 0.4
miles to Cache La Poudre River.
3.0 Stormwater Management Controls
3.1 SWMP Administrator
A SWMP Administrator must be designated in conjunction with the Stormwater Permit. This person
shall be responsible for developing, implementing, maintaining, and revising the SWMP. The
SWMP Administrator will also be the contact for all SWMP-related issues and will be the person
responsible for the accuracy, completeness, and implementation of the SWMP. The Administrator
should be a person with authority to adequately manage and direct day-to-day stormwater quality
management activities at the site.
The SWMP Administrator for this site is:
Name: (to be filled-in by permittee)
Company: (to be filled-in by permittee)
Phone: (to be filled-in by permittee)
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E-mail: (to be filled-in by permittee)
3.2 Best Management Practices (BMP’s) for Stormwater Pollution Prevention
Beginning from mobilization, and throughout the entire construction of the project, erosion control
devices shall be installed to ensure minimal pollutant migration. These erosion control devices may
be installed in phases, or not at all, depending on actual conditions encountered at the site. It is
the responsibility of the Contractor to make the determination as to what practices should be
employed and when. In the event that a review agency deems BMPs to be insufficient, it shall be
the responsibility of the contractor to implement modifications as directed.
Best Management Practices (BMPs) are loosely defined as a method, activity, maintenance
procedure, or other management practice for reducing the amount of pollution entering a water
body. The term originated from rules and regulations in Section 208 of the Clean Water Act.
Details for Structural and Non-Structural BMPs have been included in Appendix B. These details
should be used for additional information on installation and maintenance of BMPs specified in this
report. It is also intended to serve as a resource for additional BMPs that may be appropriate for
the site that have not specifically been mentioned in the report.
3.3 Structural Practices for Erosion and Sediment Control
Structural BMPs are physical devices that are implemented to prevent erosion from happening or to
limit erosion once it occurs. These devices can be temporary or permanent, and installation of
individual components will vary depending on the stage of construction.
A table depicting construction sequence and BMP application/removal has been placed on the
“Dynamic Site Plan” to help document the implementation of these BMPs. Refer to the Stormwater
Management Plan Static Site Plan in the Appendix for the assumed location of all BMPs.
Construction Details for Temporary BMPs are located in the Appendix for reference.
Again, the final determination for which BMP’s will be installed, where they will be located, and
when they will be installed shall be made by the Contractor, along with all documentation
throughout the construction process.
Silt Fencing (Phase I)
Silt fencing shall be provided to prevent migration of sediment off-site or into adjacent properties.
All silt fencing shall be installed prior to any land disturbing activity (demolition, stockpiling,
stripping, grading, etc.). Silt fencing is to be installed prior to site excavation or earthwork
activities.
Inspections of the silt fence should identify tears or holes in the material, and should check for
slumping fence or undercut areas that allow flows to bypass the fencing. Damaged sections of
fencing should be repaired or replaced to ensure proper functioning. Sediment accumulated behind
the silt fence should be removed to maintain BMP effectiveness, typically before it reaches a depth
of 6 inches.
At a minimum, it is suggested that silt fencing shall be located along the northern, western and
southern limits of disturbance. Silt fencing can installed in conjunction with/adjacent to
construction or security fencing. Sediment Control Logs may also be substituted in lieu of silt
fencing, as appropriate. See below for a description of Sediment Control Logs.
Sediment Control Log – aka “Straw Wattles” (Phase I)
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A Sediment Control Log is a linear roll made of natural materials, such as straw, coconut fiber, or
other fibrous material trenched into the ground and held with a wooden stake. Sediment Control
Logs can be used in many instances. Examples include perimeter control for stockpiles, as part of
inlet protection designs, as check dams in small drainage ways, on disturbed slopes to shorten flow
lengths, or in lieu of silt fencing (where appropriate).
Sediment Control Logs should be inspected for excess sediment accumulation. Sediment should be
removed prior to reaching half the height of the log.
At a minimum, Sediment Control Logs should be used around soil stockpiles (including landscape
material) and at all stormwater discharge locations other than inlets.
Vehicle Tracking Control Pads (Phase I)
Vehicle tracking control pads shall be provided to minimize tracking of mud and sediment onto
paved surfaces and neighboring roadways. All vehicle tracking control pads shall be installed prior
to any land disturbing activity (demolition – as necessary, stockpiling, stripping, grading, etc.).
Location of vehicle tracking control pads will be located at any and all existing and future vehicle
accesses being used during any of the construction phases. These locations will primarily be
dictated by gates or openings in the temporary construction fencing that is expected to be installed.
Vehicle tracking control pads are to be installed prior to demolition (as appropriate), site excavation
or earthwork activities.
Vehicle tracking pads should be inspected for degradation and aggregate material should be
replaced as needed. If the area becomes clogged with water, excess sediment should be removed.
Aggregate material should remain rough, and at no point should aggregate be allowed to compact in
a manner that causes the tracking pad to stop working as intended.
Suggested locations for a vehicle tracking pad is at the proposed access to the site from Howes
Street.
Inlet Protection (Phase I & II)
Inlet protection shall be provided for existing inlets to prevent sediment transport from adjacent
earthwork disturbance. Installation of these filters shall occur before adjacent earth disturbing
activities (Phase I implementation). Wattle type filters are to be implemented for new and existing
inlets where asphalt does not exist. For these inlets, if pavement is constructed adjacent to the
structure or if the area adjacent to the inlet is changed such that the wattle type filter is no longer
effective, it shall be the responsibility of the Contractor to ensure that an appropriate method is
used instead. For example, the wattle filter could be reused, or a gravel-block inlet filter may be
installed. It will be left to the discretion of the Contractor as to whether replacement of any inlet
filter is necessary.
Inlet protection should be inspected regularly for tears that can result in sediment entering an inlet.
Inlet protection should also be inspected for sediment accumulation upstream of the inlet, and
sediment should be removed when the less than half of the capacity is available, or per
manufacturer specifications.
The Contractor shall provide inlet protection for all proposed inlets as they are installed (Phase II
implementation).
Concrete Washout Area (Phase II)
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A concrete washout should be provided on the site. The washout can be lined or unlined excavated
pits in the ground, commercially manufactured prefabricated containers, or aboveground holding
areas. The concrete washout must be located a minimum of 400 feet from any natural drainage
way or body of water, and at least 1000 feet from any wells or drinking water sources. Washout
areas should not be located in an area where shallow groundwater may be present. Contractor
shall clearly show the desired location and access to the Concrete Washout Area on the Stormwater
Management Plan - Dynamic Site Plan. Contractor shall place a Vehicle Tracking Pad if the
selected location for the Concrete Washout Area is detached from pavement. Clear signage
identifying the concrete washout should also be provided.
The Concrete Washout Area should be inspected regularly. Particular attention should be paid to
signage to ensure that the area is clearly marked. Confirmation that the washout is being used
should also be noted to ensure that other undesignated areas of the site are not being used
incorrectly as a concrete washout.
An appropriate location for the concrete washout area is located close to Howes Street south of the
proposed entrance. This location is a suggestion only, and can be relocated at the discretion of the
Contractor.
Permanent/Established Vegetation (Phase IV)
Permanent or established vegetation and landscaping is considered a permanent form of sediment
and erosion control for common open spaces, steep slopes and areas not exposed to prolonged
scour velocities, or acute incipient motion bed shear stresses that will create soil erosion, rill
formation and subsequent sediment transport. Areas where the previous conditions apply will
contain sufficient permanent BMPs, such as riprap or cobble mulch. Permanent vegetation shall
conform to the approved Landscape Plan prepared by Russell+Mills.
3.4 Non-Structural Practices for Erosion and Sediment Control
Non-Structural BMPs are practices or activities that are implemented to prevent erosion from
happening or to limit erosion once it occurs. These BMPs can be a practice resulting in physical
change to the site, such as mulching or slope stabilization. They can also result in behavioral
changes on the site, such as changes to construction phasing to minimize exposure to weather
elements, or increased employee awareness gained through training.
Protection of Existing Vegetation (Phases I-IV)
Protection of existing vegetation on a construction site can be accomplished through installation of a
construction fence around the area requiring protection. In cases where up-gradient areas are
disturbed, it may also be necessary to install perimeter controls to minimize sediment loading to
sensitive areas such as wetlands.
Trees that are to remain after construction is complete must be protected. Most tree roots grow
within the top 12”-18” of soil, and soil compaction is a significant threat to tree health. As such,
particular care should be taken to avoid activities within the drip-line of the tree. Direct equipment
damage should also be prevented. The most effective way to ensure the health of trees is to
establish a protection zone at the drip-line of the tree to prevent unintended activity in the area
directly surrounding the tree.
Fencing should be inspected and repaired when needed. If damage occurs to a tree, an arborist
should be consulted on how to care for the tree. If a tree is damage beyond repair, the City Forester
should be consulted on remediation measures.
At a minimum, protection to all trees identified for retention on the plans by Russell+Mills.
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Stockpile Management (Phases I-III)
Stockpile management should be utilized to minimize erosion and sediment transport from soil
stockpiles. In general, soil stockpiles should be located a minimum of 100 feet from any drainage
way and 50 feet from any storm sewer inlets. Where practical, choose a stockpile location that will
remain undisturbed for the longest period of time as the phases of construction progress. Sediment
control BMPs should be placed around the perimeter of the stockpile, and a designated access point
on the upstream side of the stockpile should be identified. BMPs such as surface roughening,
temporary seeding, mulching, erosion control blankets, or soil binders should be used to stabilize
the stockpile surface.
As a part of stockpile management, regular inspections of the perimeter controls should be
completed. If BMPs have been utilized to stabilize the surface of the stockpile, they should be
inspected and repaired as needed.
While significant soil stockpiles are not expected with this project, it is possible that foundation
excavation or the delivery landscaping material may generate temporary stockpiles. The location of
any such stockpiles shall be the responsibility of the SWMP Administrator.
Mulching (Phase I-III)
Mulching helps reduce erosion by protecting bare soil from rainfall impact, increasing infiltration,
and reducing runoff. Although often applied in conjunction with temporary or permanent seeding, it
can also be used for temporary stabilization of areas that cannot be reseeded due to seasonal
constraints. The most common type of mulch used is hay or grass that is crimped into the soil to
keep it secure. However, crimping may not be practical on slopes steeper than three to one
(3H:1V).
The Contractor shall mulch all planted areas within twenty-four (24) hours after planting. Only
weed-free and seed-free straw mulch may be used. Straw mulch should be applied at two (2) tons
per acre, and shall be adequately secured by crimping, tackifier, netting or blankets. Hydraulic
mulching may also be used on steep slopes or where access is limited. In the case that hydraulic
mulching is utilized, the Contractor shall use wood cellulose fibers mixed with water at two
thousands to two thousand five hundred (2,000-2,500) pounds per acre and organic tackifier at
one hundred to four hundred (100-400) pounds per acre.
The Contractor is responsible in applying wood chip mulch to all planted trees and shrubs as shown
on the Landscape Plan prepared by Russell+Mills.
Wind Erosion/Dust Control (Phase I-IV)
Wind Erosion and Dust Control BMP’s help to keep soil particles from entering the air as a result of
land disturbing construction activities. Examples include use of a water truck or irrigation/sprinkler
system to wet the top layer of disturbed soil, seeding and mulching, soil binders, or wind fences.
If a water truck or irrigation/sprinkler system is utilized, monitoring to ensure that sufficient water is
applied is crucial to ensuring soil particles don’t become airborne. Equally important is monitoring
for overwatering, as too much water can lead to increased erosion.
Street Sweeping (Phases I -IV)
Street sweeping should be used to remove sediment that has been tracked onto adjacent roadways.
Roadways should be inspected at least once a day, and sediment should be removed as needed. A
check of the area inlet protection should be completed after sweeping to ensure nothing was
displaced during sweeping operations. Street sweeping can reduce the sediment washed into the
existing storm drain system. Street sweeping may be necessary on the existing hardscape areas
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which receive runoff from the disturbed areas.
Saw Cutting Pollution Prevention (Phase I)
The following protocol is recommended to prevent dust and slurry from asphalt and concrete saw
cutting activities from migrating into the existing storm drain system.
· Slurry and cuttings shall be vacuumed during cutting and surfacing operations
· Slurry and cuttings shall not remain on permanent concrete or asphalt pavement
overnight
· Slurry and cuttings shall not drain to any natural or constructed drainage conveyance
· Collected slurry and cuttings shall be disposed of in a manner that does not violate
groundwater or surface water standards
Good Housekeeping Practices (All phases)
Good housekeeping practices that will prevent pollution associated with solid, liquid, and hazardous
construction-related materials and wastes should be implemented throughout the project.
Examples of good housekeeping include providing an appropriate location for waste management
containers, establishing proper building material staging areas, designating paint and concrete
washout areas, establishing proper equipment/vehicle fueling and maintenance practices.
Development of a spill prevention and response plan is another example of Good Housekeeping
practices that should be used on the project. The following items are detailed examples of some of
the good housekeeping practices that should be utilized throughout the project. It should be noted
that a complete list of practices and detailed discussion regarding good housekeeping has been
included with Appendix B, sheets GH-1 – GH-6.
Street Sweeping and Vacuuming – Street sweeping and vacuuming should be used to remove
sediment that has been tracked onto adjacent roadways. Roadways should be inspected at least
once a day, and sediment should be removed as needed. A check of inlet protection should be
completed after sweeping to ensure nothing was displaced during sweeping operations.
Waste Management – Designate trash and bulk waste collection areas on-site. When possible,
materials should be recycled. Hazardous material waste should be segregated from other solid
waste. Waste collection areas should be located away from streets, gutters, watercourses, and
storm drains. Dumpsters should be located near site entrances to minimize traffic on disturbed
soils, and they should be placed on a level soil surface.
Establish Proper Building Material Handling and Staging areas – Clearly designate site areas for
staging and storage of building materials. Provide appropriate BMPs to ensure that spills or leaks
are contained.
Establish Proper Equipment/Vehicle Fueling and Maintenance Practices – If needed, create a
clearly designated on-site fueling and maintenance area that is clean and dry. Provide appropriate
BMPs to ensure that spills or leaks are contained.
3.5 Phased BMP Installation
It is important to recognize the four (4) major Development Phases as defined by the State of
Colorado’s Stormwater Discharge Permit (SDP). These four development phases (referred to as
Sequencing by the City of Fort Collins) have been distinguished to aid in the appropriate timing of
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installation/implementation of BMPs at different stages of the construction process. These phases
are described as follows:
Phase I – Grading Stage; BMPs for initial installation of perimeter controls
Phase II – Infrastructure Stage; BMPs for utility, paving and curb installation
Phase III – Vertical Construction Stage; BMPs for individual building construction.
Phase IV – Permanent BMPs and final site stabilization.
The following is a rough estimate of the anticipated construction sequence for site improvements.
The schedule outlined below is subject to change as the project progresses and as determined by
the General Contractor.
Table 1 – Preliminary Permit and Construction Schedule
TASK BEGINNING
DATE ENDING DATE
"BMP-PHASE OF
DEVELOPMENT"
Development Construction Permit
Issued by City of Fort Collins
March 2014 March 2014 I
Overlot Grading (Demolition) March 2014 March 2014 I
Utility Installation March 2014 April 2014 II
Building Construction April 2014 December 2014 III
Final Stabilization November 2014 December 2014 IV
Included in the back map pockets are five Site Plans: a “Static” Site Plan and four “Dynamic” Site
Plans. The “Static” plan serves to display the overall management plan all at once. However,
proper implementation of BMPs does not occur at once, and certain BMPs may move location in
the construction process; therefore, the “Dynamic” Site Plans are intended for the Contractor to
write in the BMP symbols to document the location and time the BMPs are installed and
maintained throughout the entire construction process.
3.6 Material Handling and Spill Prevention
Potential pollution sources, as discussed in earlier sections, are to be to be identified by the
Contractor. Spill prevention procedures are to be determined and put in place prior to construction
by the Contractor. A spill and flooding response procedure must also be determined and put in
place prior to construction by the Contractor. Additionally, steps should be taken to reduce the
potential for leaks and spills to come in contact with stormwater runoff, such as storing and
handling toxic materials in covered areas or by storing chemicals within berms or other secondary
containment devices.
A notification procedure must be put in place by the Contractor, by which workers would first notify
the site construction superintendent, who would then notify the SWMP Administrator. Depending
on the severity of the spill, the site construction superintendent and SWMP Administrator would
possibly notify the Colorado Department of Public Health and Environment - Water Quality Control
Division, downstream water users, or other appropriate agencies. The release of any chemical, oil,
petroleum product, sewage, etc., which enter waters of the State of Colorado (which include
surface water, ground water, and dry gullies or storm sewers leading to surface water) must be
reported immediately to the Division’s emergency spill reporting line at (877) 518-5608. All
spills that will require cleanup, even if the spill is minor and does not need to be reported to the
state, should still be reported to the City of Fort Collins Utilities office at 970-221-6700.
Brownes on Howes
Stormwater Management Plan 11
While not expected with this project, it will be the responsibility of the Contractor to designate a
fueling area and take the necessary precautions to ensure that no stormwater pollution occurs in the
event that a fueling area is needed. Fueling areas shall be located a minimum 100 feet from all
drainage courses. A 12-inch high compacted earthen ridge capable of retaining potential spills
shall enclose fueling areas. Other secondary containment devices can be used instead of the
earthen ridge. The area shall be covered with a non-porous lining to prevent soil contamination.
Printed instructions for cleanup procedures shall be posted in the fueling area and appropriate fuel
absorbents shall be available along with containers for used absorbents within the fueling area.
3.7 Dedicated Concrete or Asphalt Batch Plant
There are not any dedicated concrete or asphalt batch plants anticipated with this project. In the
event that a plant is needed, the Contractor should be aware that additional permitting will be
required. In particular, an Air Pollutant Emission Notice (APEN) will need to be obtained from the
CDPHE.
3.8 Vehicle Tracking Control
In addition to the vehicle tracking pads discussed previously, additional measures can be taken to
minimize and control sediment discharges from the site due to vehicle tracking. These measures
can include fencing around the site to control access points. Regular street sweeping can also be
used to minimize the transmission of sediment from the site due to vehicles leaving the site. The
use of gravel parking areas and wash racks can also be implemented to ensure minimal vehicle
tracking from the site.
3.9 Waste Management and Disposal
It will be the responsibility of the Contractor to designate a concrete truck chute washout area and
to clearly identify that area. Detailed information about the design and maintenance of the Concrete
Washout can be found under the Structural Practices section of this report. At no time should
untreated wash water be allowed to discharge from the site or to enter a storm drain system or
stream. Upon completion of construction activities the concrete washout material shall be removed
and properly disposed of prior to the area being restored.
Any waste material that currently exists on the site or that is generated by construction will be
disposed of in such a manner as to not cause pollutants in stormwater discharges. If waste is to be
stored on-site, it shall be in an area located a minimum of 100 feet from all drainage courses.
Whenever waste is not stored in a non-porous container, it shall be in an area enclosed by a 12-
inch high compacted earthen ridge or some other approved secondary containment device. The area
shall be covered with a non-porous lining to prevent soil contamination. Whenever precipitation is
predicted, the waste shall be covered with a non-porous cover, anchored on all sides to prevent its
removal by wind, in order to prevent precipitation from leaching out potential pollutants from the
waste. On-site waste disposal practices, such as dumpsters, should be covered or otherwise
contained as to prevent dispersion of waste materials from wind. It shall also be the responsibility
of the Contractor to maintain a clean jobsite as to prevent dispersion of waste material and potential
pollutants into adjacent properties or waterways.
The location of, and protective measures for, temporary restroom facilities shall be the responsibility
of the SWMP Administrator.
3.10 Groundwater and Stormwater Dewatering
Brownes on Howes
Stormwater Management Plan 12
The BMPs selected for construction dewatering vary depending on the site-specific features, such as
soils, topography, discharge quantities, and discharge location. Typically, dewatering involves
pumping water from an inundated area to a BMP, prior to the water being released downstream
into a receiving waterway, sediment basin, or well-vegetated area. Acceptable BMPs included
discharging water into a sediment trap or basin, using a dewatering filter bag, or using a series of
sediment logs. A settlement tank or an active treatment system can also be utilized. Another
commonly used method to handle the pumped water is the “sprinkler method,” which involves
applying the water to vegetated areas through a perforated discharge hose. Dispersal from a water
truck for dust control can also be used to disperse the pumped water.
4.0 Final Stabilization and Long-Term Stormwater Management
4.1 Final Stabilization
All disturbed areas will be seeded, crimped and mulched or sod. Refer to the Landscape Plan by
Ripley Design for final surface treatment. As defined by the Colorado Department of Public Health
and Environment in the General Permit Application for Stormwater Discharges, “Final stabilization is
reached when all soil disturbing activities at the site have been completed, and uniform vegetative
cover has been established with a density of at least 70 percent of pre-disturbance levels or
equivalent permanent, physical erosion reduction methods have been employed.”
4.2 Long-Term Stormwater Management
The method of long-term stormwater management will take place within the paver section before
being discharged into the City’s Storm Sewer System. All disturbed areas will receive permanent
paving or will be vegetated per the Landscape Plan.
5.0 Inspection, Maintenance and Record Keeping
5.1 BMP Inspection
All temporary erosion control facilities shall be inspected at a minimum of once every two (2) weeks
and after each significant storm event or snowmelt. Repairs or reconstruction of BMPs, as
necessary, shall occur as soon as possible in order to ensure the continued performance of their
intended function. It is the responsibility of the SWMP Administrator to conduct bi-weekly
inspections, maintain BMPs if needed, to keep records of site conditions and inspections, and to
update the SWMP as necessary.
The construction site perimeter, disturbed areas, all applicable/installed erosion and sediment
control measures, and areas used for material storage that are exposed to precipitation shall be
inspected for evidence of, or the potential for, pollutants entering the drainage system. Erosion and
sediment control measures identified in the SWMP shall be observed to ensure that they are
operating correctly. Particular attention should be paid to areas that have a significant potential for
stormwater pollution, such as demolition areas, concrete washout locations, and vehicle entries to
the site. The inspection must be documented to ensure compliance with the permit requirements.
5.2 BMP Maintenance
Any BMP’s not operating in accordance with the SWMP must be addressed as soon as possible,
immediately in most cases, to prevent the discharge of pollutants. If modifications are necessary,
such modifications shall be documented so that the SWMP accurately reflects on-site conditions.
The SWMP needs to accurately represent field conditions at all times.
Uncontrolled releases of mud, muddy water, or measurable amounts of sediment found off-site will
Brownes on Howes
Stormwater Management Plan 13
be recorded with a brief explanation of the measures taken to clean-up the sediment that has left
the site, as well as the measures taken to prevent future releases. This record shall be made
available to the appropriate public agencies (Colorado Department of Public Health and
Environment, Water Quality Control Division; Environmental Protection Agency; City of Fort Collins;
etc.) upon request.
Preventative maintenance of all temporary and permanent erosion control BMPs shall be provided
in order to ensure the continued performance of their intended function. Temporary erosion control
measures are to be removed after the site has been sufficiently stabilized as determined by the City
of Fort Collins. Maintenance activities and actions to correct problems shall be noted and recorded
during inspections.
Inspection and maintenance procedures specific to each BMP identified with this SWMP are
discussed in Section 3. Details have also been included with Appendix B.
5.3 Record Keeping
Documentation of site inspections must be maintained. The following items are to be recorded and
kept with the SWMP:
· Date of Inspection
· Name(s) and title(s) of personnel making the inspection
· Location(s) of sediment discharges or other pollutants from the site
· Location(s) of BMP’s that need to be maintained
· Location(s) of BMP’s that failed to operate as designed or proved inadequate
· Locations(s) where additional BMP’s are needed that were not in place at the time of inspection
· Deviations from the minimum inspection schedule
· Descriptions of corrective action taken to remedy deficiencies that have been identified
· 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 after corrective actions have been taken.
Provided within Appendix E of this SWMP is an Example Inspection Log to aid in the record keeping
of BMP inspections and maintenance. Photographs, field notebooks, drawings and maps should be
included by the SWMP Administrator when appropriate.
In addition to the Inspection Log, records should be kept documenting:
· BMP maintenance and operation
· Stormwater contamination
· Contacts with suppliers
· Notes on the need for and performance of preventive maintenance and other repairs
· Implementation of specific items in the SWMP
· Training events (given or attended)
· Events involving materials handling and storage
· Contacts with regulatory agencies and personnel
· Notes of employee activities, contact, notifications, etc.
Records of spills, leaks, or overflows that result in the discharge of pollutants must be documented
and maintained. A record of other spills that are responded to, even if they do not result in a
discharge of pollutants, should be made. Information that should be recorded for all occurrences
includes the time and date, weather conditions, reasons for the spill, etc. Some spills may need to
be reported to authorities immediately. Specifically, a release of any chemical, oil, petroleum
product, sewage, etc., which may enter waters of the State of Colorado (which include surface
water, ground water and dry gullies or storm sewers leading to surface water) must be reported to
the CDPHE.
Brownes on Howes
Stormwater Management Plan 14
Additionally, the “Dynamic Site Plan” is intended to be a “living” document where the SWMP
Administrator can hand write the location of BMPs as they are installed to appropriately reflect the
current site conditions. Also on the “Dynamic Site Plan” is a “Table of Construction Sequence and
BMP Application/Removal” that the SWMP Administrator can use to document when BMPs were
installed or removed in conjunction with construction activities. These items have been included as
an aid to the SWMP Administrator, and other methods of record keeping are at his or her discretion.
This Stormwater Management Plan (both the text and map) is not a static document. It
is a dynamic device intended to be kept current and logged as construction takes place.
It shall be the responsibility of the SWMP Administrator and/or the permit holder (or
applicant thereof) to ensure the plan is properly maintained and followed. Diligent
administration is critical, including processing the Notice to Proceed and noting on the
Stormwater Management Plan the dates that various construction activities occur and
respective BMPs are installed and/or removed.
Brownes on Howes
Stormwater Management Plan 15
6.0 Additional SWMP and BMP Resources
Urban Drainage and Flood Control District
Urban Storm Drainage Criteria Manual - Volume 3 “Best Management Practices”
Colorado Department of Transportation
Erosion Control and Stormwater Quality Guide
BMP Field Academy
EPA Menu of BMP’s
Construction Site Storm Water Runoff Control
International Stormwater Best Management (BMP) Database
Rocky Mountain Education Center
Rocky Mountain Education Center
Red Rocks Community College, Lakewood
Keep It Clean Partnership
Boulder
Brownes on Howes
Stormwater Management Plan 16
References
1. Drainage Letter Report for Howes on Brownes, Northern Engineering Services,
November 19, 2014 (NE Project No. 1033-001)
2. Soil Resource Report for Larimer County Area, Colorado, Natural Resources
Conservation Service, United States Department of Agriculture.
3. Urban Storm Drainage Criteria Manual, Volumes 1-3, Urban Drainage and Flood Control
District, Water Resources Publications, LLC., Denver, Colorado, Updated November
2010.
APPENDIX A
SITE MAPS
C
S
C
S
VAULT
ELEC
VAULT
ELEC
E
X
X
G
G G G
G G
G G
TRANS
ELEC
ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST
UD UD UD UD UD UD UD UD UD UD UD UD UD UD UD UD
UD UD UD UD UD UD UD UD UD UD UD UD UD UD UD UD
DN
DN
DN
DN
DN
DN
DN
DN
DN
MONITORING
WELL
COMBINATION
INLET W/
ORIFICE PLATE
HOWES STREET
(60' PUBLIC ROW)
EXISTING 6'
UTILITY EASEMENT
4' PUBLIC SIDEWALK
PROPERTY LINE
PROPERTY LINE
ROW LINE
EXISTING
DRIVEWAY
5' PUBLIC SIDEWALK
TRASH
ENCLOSURE
LANDSCAPE WALL
W/ FENCE RAISED
PLANTER BED
10' PARKWAY
EXISTING 5' SIDEWALK
PERMEABLE PAVER SECTION W/
UNDERGROUND DETENTION STRUCTURE
TRENCH
DRAIN
10" DOME GRATE
W/ 10" DRAIN BASIN
6" PERFORATED
UNDERDRAIN
C
S
C
S
VAULT
ELEC
VAULT
ELEC
E
X
X
G
G G G
G G
G G
TRANS
ELEC
ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST
UD UD UD UD UD UD UD UD UD UD UD UD UD UD UD UD
UD UD UD UD UD UD UD UD UD UD UD UD UD UD UD UD
DN
DN
DN
DN
DN
DN
DN
DN
DN
MONITORING
WELL
COMBINATION
INLET W/
ORIFICE PLATE
HOWES STREET
(60' PUBLIC ROW)
EXISTING 6'
UTILITY EASEMENT
4' PUBLIC SIDEWALK
PROPERTY LINE
PROPERTY LINE
ROW LINE
EXISTING
DRIVEWAY
5' PUBLIC SIDEWALK
TRASH
ENCLOSURE
LANDSCAPE WALL
W/ FENCE RAISED
PLANTER BED
10' PARKWAY
EXISTING 5' SIDEWALK
PERMEABLE PAVER SECTION W/
UNDERGROUND DETENTION STRUCTURE
TRENCH
DRAIN
10" DOME GRATE
W/ 10" DRAIN BASIN
6" PERFORATED
UNDERDRAIN
APPENDIX B
EROSION CONTROL DETAILS
C7.02
EROSION CONTROL DETAILS
C. Snowdon
B. Ruch
N/A
No. Revisions:
By: Date:
REVIEWED BY:
N. Haws
DESIGNED BY:
DRAWN BY:
SCALE:
DATE:
02.18.15
PROJECT:
1033-001
Sheet
Of 18 Sheets
BROWNES ON HOWES
DRAWING FILENAME: D:rojects\1033-001\Dwg\Drng\1033-001_EROS.dwg LAYOUT NAME: C7.02 DATE: Feb 18, 2015 - 2:28pm CAD OPERATOR: cody
LIST OF XREFS: [NES-xborder] [1033-001_xAdj] [1033-001_xExst] [1033-001_xPgrad] [1033-001_xPutil] [1033-001_xSite] [1033-001_xTopo]
These drawings are
instruments of service
provided by Northern
Engineering Services, Inc.
and are not to be used for
any type of construction
unless signed and sealed by
a Professional Engineer in
the employ of Northern
Engineering Services, Inc.
NOT FOR CONSTRUCTION
REVIEW SET
301 North Howes Street, Suite 010
Fort Collins, Colorado 80521
E N G I N E E R I N G
N O R T H E RN
PHONE: 970.221.4158 FAX: 970.221.4159
www.northernengineering.com
02.18.15
VEHICLE CONTROL TRACKING PAD
NOT TO SCALE
COMPACTED BACKFILL
FLOW
SILT TRENCH FENCE AND FABRIC ATTACHED (ASTM TO POST. D6461) ANCHORED IN
24" MIN
6' MAX
FLOW
TRENCH AND ATTACHED TO POST.
4"x4" TRENCH
SILT FENCE FABRIC (ASTM D6461) ANCHORED IN
18" MIN
24" MIN
42" MIN
POSTS
{\LPREASSEMBLED SILT FENCE}
JOIN FIRST
NOTE:
THICKNESS OF GEOTEXTILE
HAS BEEN EXAGGERATED.
APPENDIX C
LANDSCAPE PLAN
APPENDIX D
COPIES OF PERMITS/APPLICATIONS
APPENDIX E
INSPECTION LOGS
APPENDIX F
CONTRACTOR INSERTS
APPENDIX G
CONTRACTOR INSERTS
POST SHALL BE JOINED AS SHOWN, THEN ROTATED 180° IN DIRECTION SHOWN AND DRIVEN INTO THE GROUND.
{\LSILT FENCE JOINTS}
DRIVE POSTS VERTICALLY INTO THE GROUND TO A MINIMUM DEPTH OF 18".
EXCAVATE A TRENCH APPROXIMATELY 4" WIDE AND 4" DEEP ALONG THE LINE OF POSTS AND UPSLOPE FROM THE
BARRIER.
ANCHOR TRENCH SHALL BE EXCAVATED BY HAND, WITH TRENCHER, OR WITH SILT FENCE INSTALLATION MACHINE.
NO ROAD GRADERS, BACKHOES, ETC. SHALL BE USED.
NOT LESS THAN THE BOTTOM 1' OF THE SILT FENCE FABRIC SHALL BE BURIED IN THE TRENCH.
THE TRENCH SHALL BE COMPACTED BY HAND, WITH "JUMPING JACK" OR BY WHEEL ROLLING. COMPACTION SHALL
BE SUCH THAT THE SILT FENCE RESISTS BEING PULLED OUT OF ANCHOR TRENCH BY HAND.
SILT FENCE INDICATED IN THE PLANS SHALL BE INSTALLED PRIOR TO ANY LAND-DISTURBING ACTIVITIES.
USE WOOD POSTS OR OTHER MATERIAL AS ACCEPTED BY THE CITY.
{INSTALLATION NOTES:
}1.
2.
3.
4.
5.
6.
7.
THE CONTRACTOR SHALL INSPECT SILT FENCE EVERY TWO WEEKS AND AFTER SIGNIFICANT STORM
EVENTS AND MAKE REPAIRS OR CLEAN OUT UPSTREAM SEDIMENT AS NECESSARY.
SEDIMENT ACCUMULATED UPSTREAM OF SILT FENCE SHALL BE REMOVED WHEN THE UPSTREAM
SEDIMENT REACHES A DEPTH OF 6".
SILT FENCE SHALL BE REMOVED WHEN THE UPSTREAM DISTURBED AREA IS STABILIZED AND GRASS
COVER IS ACCEPTED BY THE CITY. IF ANY DISTURBED AREA EXISTS AFTER REMOVAL, IT SHALL BE SEEDED
AND MULCHED OR OTHERWISE STABILIZED IN A MANNER ACCEPTED BY THE CITY.
{MAINTENANCE NOTES:
}1.
2.
3.
\A1;4" MIN.
\A1;4" MIN.
{\C256;1 \H0.7x;\S1#2;\H1.429x;" x 1 \H0.7x;\S1#2;\H1.429x;" WOODEN FENCE POSTS}
COMPACTED BACKFILL
SILT FENCE
WATTLE INSTALLATION
NOT TO SCALE
%%UWATTLES - DETAIL A
FLOW
3'-4'
ADJACENT ROLLS SHALL
TIGHTLY ABUT
W1 NOTES:
INSTALLATION:
WHEN INSTALLING RUNNING LENGTHS OF WATTLES, BUTT THE SECOND
WATTLE TIGHTLY AGAINST THE FIRST, DO NOT OVERLAP THE ENDS. STAKE
THE WATTLES AT EACH END AND FOUR FOOT ON CENTER. FOR EXAMPLE:
A 25 FOOT WATTLE USES 6 STAKES
A 20 FOOT WATTLE USES 5 STAKES
A 12 FOOT WATTLE USES 4 STAKES
STAKES SHOULD BE DRIVEN THROUGH THE MIDDLE OF THE WATTLE.
LEAVING 2 - 3 INCHES OF THE STAKE PROTRUDING ABOVE THE WATTLE. A
HEAVY SEDIMENT LOAD WILL TEND TO PICK THE WATTLE UP AND COULD
PULL IT OFF THE STAKES IF THEY ARE DRIVEN DOWN TOO LOW. IT MAY BE
NECESSARY TO MAKE A HOLE IN THE WATTLE WITH A PICK END OF YOUR
MADDOX IN ORDER TO GET THE STAKE THROUGH THE STRAW. WHEN
STRAW WATTLES ARE USED FOR FLAT GROUND APPLICATIONS, DRIVE THE
STAKES STRAIGHT DOWN; WHEN INSTALLING WATTLES ON SLOPES, DRIVE
THE STAKES PERPENDICULAR TO THE SLOPE.
DRIVE THE FIRST END STAKE OF THE SECOND WATTLE AT AN ANGLE
TOWARD THE FIRST WATTLE IN ORDER TO HELP ABUT THEM TIGHTLY
TOGETHER. IF YOU HAVE DIFFICULTY DRIVING THE STAKE INTO EXTREMELY
HARD OR ROCKY SLOPES, A PILOT BAR MAY BE NEEDED TO BEGIN THE
STAKE HOLE.
1"x 1" WOOD STAKES
18"-24"
BAILING WIRE OR
NYLON ROPE
WATTLE "A" WATTLE "B"
1' 2'
TYP.
1' 1'
%%UWATTLES - DETAIL B
W2 NOTES:
INSTALLATION:
STAKES SHOULD BE DRIVEN ACROSS FROM EACH OTHER
AND ON EACH SIDE OF THE WATTLE. LEAVING 4"-6" OF
STAKE PROTRUDING ABOVE THE WATTLE. BAILING WIRE OR
NYLON ROPE SHOULD BE TIED TO THE STAKES ACROSS
THE WATTLE. STAKES SHOULD THEN BE DRIVEN UNTIL THE
BAILING WIRE OR NYLON ROPE IS SUFFICIENTLY SNUG TO
THE WATTLE.
WHEN INSTALLING RUNNING LENGTHS OF WATTLES, TO
PREVENT SHIFTING, BUTT THE SECOND WATTLE TIGHTLY
AGAINST THE FIRST. DO NOT OVERLAP THE ENDS. STAKES
SHOULD BE DRIVEN 1 FT. FROM END, ACROSS FROM AND
ON EACH SIDE OF WATTLE LEAVING 4"-6" OF STAKE
PROTRUDING ABOVE THE WATTLE. BAILING WIRE OR
NYLON ROPE SHOULD BE TIED TO STAKES IN AN HOUR
GLASS FORMATION (FRONT TO BACK OF WATTLE "A",
ACROSS TO FRONT OF WATTLE "B", ACROSS TO BACK AND
BACK TO FRONT OF WATTLE "A"). STAKES SHOULD THEN BE
DRIVEN IN UNTIL BAILING WIRE OR NYLON ROPE IS
SUFFICIENTLY SNUG TO THE WATTLE.
SEDIMENT
DEPOSITION
ZONE
STORM WATER LINE
WEIGHTED WATTLE
LIP OF GUTTER
SIDEWALK EXISTING OR
PROPOSED INLET
TOP BACK CURB
FLOW LINE
%%uCURB INLET WATTLE PROTECTION SETUP%%u
SEDIMENT
DEPOSITION
ZONE
STORM WATER LINE
LIP OF GUTTER
WEIGHTED WATTLE
AT 45 DEG. TO CURB
SIDEWALK
TOP BACK CURB
FLOW LINE
SIDEWALK
TOP BACK CURB
FLOW LINE
W4 NOTES:
1. NUMBER OF WATTLES AND SPACING SHOULD BE DETERMINED BY THE SLOPE AND SITE CONDITIONS.
2. TUBULAR MARKERS SHALL MEET THE REQUIREMENTS OF MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (MUTCD)
3. CITY RECOMMENDS INSTALLING AT LEAST 3 CHECKDAMS WHEN USING THIS SETUP.
LIP OF GUTTER
WEIGHTED WATTLE
W1 & W2 INSTALLATION NOTES:
1. THE LOCATION AND LENGTH OF WATTLE IS DEPENDENT ON THE CONDITIONS OF EACH SITE.
2. WATTLES SHALL BE INSTALLED PRIOR TO ANY LAND-DISTURBING ACTIVITIES.
3. WATTLES SHALL CONSIST OF STRAW, COMPOST, EXCELSIOR, OR COCONUT FIBER.
4. NOT FOR USE IN CONCENTRATED FLOW AREAS.
5. THE WATTLES SHALL BE TRENCHED INTO THE GROUND A MINIMUM OF TWO (2) INCHES.
6. WATTLES SHALL BE INSTALLED PER MANUFACTURERS SPECIFICATIONS.
7. ON SLOPES, WATTLES SHOULD BE INSTALLED ON CONTOUR WITH A SLIGHT DOWNWARD ANGLE AT THE END OF THE ROW IN ORDER TO PREVENT
PONDING AT THE MID SECTION.
8. RUNNING LENGTHS OF WATTLES SHOULD BE ABUTTED FIRMLY TO ENSURE NO LEAKAGE AT THE ABUTMENTS.
9. SPACING - DOWNSLOPE:
10. VERTICAL SPACING FOR SLOPE INSTALLATIONS SHOULD BE DETERMINED BY SITE CONDITIONS. SLOPE GRADIENT AND SOIL TYPE ARE THE MAIN
FACTORS. A GOOD RULE OF THUMB IS:
1:1 SLOPES = 10 FEET APART
2:1 SLOPES = 20 FEET APART
3:1 SLOPES = 30 FEET APART
4:1 SLOPES = 40 FEET APART, ETC.
11. HOWEVER, ADJUSTMENTS MAY HAVE TO BE MADE FOR THE SOIL TYPE: FOR SOFT, LOAMY SOILS - ADJUST THE ROWS CLOSER TOGETHER; FOR HARD,
ROCKY SOILS - ADJUST THE ROWS FURTHER APART. A SECONDARY WATTLE PLACED BEHIND THE ABUTMENT OF TWO WATTLES IS ENCOURAGED ON
STEEP SLOPES OR WHERE JOINTS HAVE FAILED IN THE PAST.
12. STAKING: THE CITY RECOMMENDS USING WOOD STAKES TO SECURE THE WATTLES. 1/2" TO 5/8" REBAR IS ALSO ACCEPTABLE. BE SURE TO USE A
STAKE THAT IS LONG ENOUGH TO PROTRUDE SEVERAL INCHES ABOVE THE WATTLE: 18" IS A GOOD LENGTH FOR HARD, ROCKY SOIL. FOR SOFT LOAMY
SOIL USE A 24" STAKE.
4"-6" ABOVE WATTLE AFTER BAILING WIRE
OR NYLON ROPE IS ATTACHED. STAKES
NEED TO BE TAMPED UNTIL WIRE/ROPE IS
SNUG WITH WATTLE.
W3 NOTE:
IF THE AREA BEHIND THE INLET IS NOT STABILIZED, A
BMP SHOULD BE USED TO PREVENT SEDIMENT FROM
ENTERING THE INLET
1"x 1" WOOD STAKES
18"-24"
W1
THE CONTRACTOR SHALL INSPECT WATTLES EVERY TWO WEEKS AND AFTER ANY SIGNIFICANT STORM EVENT AND MAKE REPAIRS OR REMOVE SEDIMENT
ACCUMULATED BEHIND WATTLE AS NECESSARY.
SEDIMENT ACCUMULATED BEHIND WATTLE SHALL BE REMOVED WHEN THE SEDIMENT HAS ACCUMULATED TO ONE HALF THE DIAMETER OF THE WATTLE.
WATTLES SHALL REMAIN IN PLACE UNTIL THE UPSTREAM DISTURBED AREA IS STABILIZED AND IS ACCEPTED BY THE CITY.
WATTLE MAINTENANCE NOTES:
1.
2.
3.
ENDS SHALL ABUT TIGHTLY
TO BACK OF CURB
END SHALL ABUT TIGHTLY
TO BACK OF CURB
ENDS OF ADJACENT WATTLES
SHALL BE TIGHTLY ABUTTED
TO PREVENT SEDIMENT BYPASS
4' MAX.
{\LPERVIOUS INSTALLATION}
{\LIMPERVIOUS INSTALLATION}
SEDIMENT
DEPOSITION ZONE
W3
W2 NOTE:
ONLY WATTLES MADE WITH COCONUT
FIBERS SHALL BE USED WHEN
INSTALLATION COMES IN CONTACT WITH A
WATER BODY.
SIDEWALK CULVERT/CHASE/PAN
W4
W3, W4 & W5 NOTES:
1. WHEN USING STRAW WATTLE, THE STRAW WATTLE MUST HAVE A WEIGHTED
CORE.
2. ALL PRODUCTS SHALL BE INSTALLED PER THE MANUFACTURER'S
SPECIFICATIONS.
3. OTHER PRODUCTS MAY BE USED IN PLACE OF WEIGHTED WATTLES UPON
WRITTEN APPROVAL FROM THE CITY. NOTE: A COPY OF DETAILS AND
SPECIFICATIONS WILL NEED TO BE INCORPORATED INTO THE SWMP.
END SHALL
TIGHTLY ABUT TO
BACK OF CURB
SEDIMENT
DEPOSITION ZONE
W5
TUBULAR
MARKER
EXISTING OR
PROPOSED INLET
%%UCONCRETE CHASE/TRICKLE CHANNEL SETUP
END SHALL
TIGHTLY ABUT TO
BACK OF CURB
%%UCURBSIDE CHECKDAMS SETUP
VEHICLE TRACKING CONTROL PAD SHALL BE LOCATED AT EVERY ACCESS POINT TO THE CONSTRUCTION SITE.
A SIGN SHALL BE PLACED NEXT TO THE VEHICLE TRACKING CONTROL PAD TO DESIGNATE THE LOCATION AS THE CONSTRUCTION ENTRANCE/EXIT.
VEHICLE TRACKING CONTROL PADS SHALL CONSIST OF HARD, DENSE, DURABLE STONE, ANGULAR IN SHAPE AND RESISTANT TO WEATHERING. ROUNDED STONE (i.e. RIVER ROCK AND COBBLES)
SHALL NOT BE USED. THE STONES SHALL BE A MINIMUM OF 3" AND A MAXIMUM OF 6" DIAMETER. THE STONES SHALL HAVE A SPECIFIC GRAVITY OF AT LEAST 2.6. CONTROL OF GRADATION WILL
BE BY VISUAL INSPECTION.
ANY CRACKED OR DAMAGED CURB AND GUTTER AND SIDEWALK SHALL BE REPLACED BY CONTRACTOR.
INSTALLATION NOTES:
1.
2.
3.
4.
CONTRACTOR SHALL INSPECT VEHICLE TRACKING CONTROL PAD DAILY. ROCK SURFACE SHALL BE CLEAN AND LOOSE ENOUGH TO RUT SLIGHTLY UNDER WHEEL LOADS AND CAUSE
LOOSE ROCK TO DISLODGE MUD FROM TIRES. WHEN ROCK BECOMES COMPACTED OR FILLED WITH SEDIMENT SO THAT THE EFFECTIVENESS OF THE PAD IS DIMINISHED, CONTRACTOR
SHALL RIP, TURN OVER, OR OTHERWISE LOOSEN ROCK, PLACE ADDITIONAL NEW ROCK, OR REPLACE WITH NEW ROCK AS NECESSARY TO RESTORE EFFECTIVENESS.
SEDIMENT AND OTHER MATERIAL SPILLED, DROPPED OR TRACKED ONTO PAVED SURFACES SHALL BE REMOVED IMMEDIATELY OR BY THE END OF EACH WORKING DAY.
VEHICLE TRACKING CONTROL PAD SHALL BE REMOVED AT THE END OF CONSTRUCTION. THE AREA SHOULD BE TOPSOILED, SEEDED, CRIMPED, AND MULCHED OR OTHERWISE
STABILIZED.
MAINTENANCE NOTES:
1.
2.
3.
3" - 6" ROCK
CONSTRUCTION FENCE, TYP., TO DISCOURAGE
VEHICLE ACCESS SIGN EXCEPT "CONSTRUCTION AT VTC ENTRANCE"
\A1;R=5'
PAVED SURFACE
\A1;20' MIN.
A
SECTION A
NO MATERIALS INCLUDING 2x4'S, PIPES, DIRT, GRAVEL OR ASPHALT, SHALL BE PLACED IN GUTTER TO FACILITATE MOUNTING CURB; HOWEVER, CURB MAY BE CUT DOWN TO A HEIGHT OF 2" OR HIGHER FOR EASIER
ACCESS AND REPLACED AT PROJECT COMPLETION. OTHER ACCESS DEVICES MAY BE USED AS ACCEPTED BY THE CITY. 3" - 6" ROCK
CURB CUT
50' MIN.
2" MIN. 6" MIN.
6" MIN.
ALTHOUGH NOT NORMALLY USED, THE CITY RESERVES THE RIGHT TO REQUIRE VEHICLE TRACKING CONTROL WITH A TEMPORARY CATTLE GUARD
AND/OR WHEEL WASH FACILITIES AT SITES WHERE TRACKING ONTO PAVED AREAS BECOMES A SIGNIFICANT PROBLEM AS DETERMINED BY THE CITY
INSPECTOR.
IF VEHICLE TRACKING CONTROL WITH WHEEL WASH FACILITIES ARE REQUIRED, ALL WHEELS ON EVERY VEHICLE LEAVING THE SITE SHALL BE
CLEANED OF MUD USING A PRESSURE-WASHER. THE CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING A WATER SOURCE AND CONSTRUCTING
A WASHWATER SEDIMENT TRAP.
5.
6.
IF VEHICLE WHEEL WASH FACILITIES ARE REQUIRED, CONTRACTOR SHALL INSPECT VEHICLE TRACKING CONTROL AND WHEEL WASH FACILITIES DAILY.
ACCUMULATED SEDIMENTS SHALL BE REMOVED FROM THE PAD SURFACE.
ACCUMULATED SEDIMENT IN THE WASHWATER/SEDIMENT TRAP SHALL BE REMOVED WHEN THE SEDIMENT REACHES AN AVERAGE DEPTH OF 12-INCHES.
4.
5.
CONCRETE WASHOUT AREA SHALL BE INSTALLED PRIOR TO ANY CONCRETE PLACEMENT ON SITE.
VEHICLE TRACKING CONTROL IS REQUIRED IF ACCESS TO CONCRETE WASHOUT AREA IS OFF PAVEMENT.
SIGNS SHALL BE PLACED AT THE CONSTRUCTION ENTRANCE, AT THE WASHOUT AREA, AND ELSEWHERE AS NECESSARY TO CLEARLY
INDICATE THE LOCATION OF THE CONCRETE WASHOUT AREA TO OPERATORS OF CONCRETE TRUCKS AND PUMP RIGS.
THE CONCRETE WASHOUT AREA SHALL BE REPAIRED AND ENLARGED OR CLEANED OUT AS NECESSARY TO MAINTAIN CAPACITY FOR
WASTED CONCRETE.
AT THE END OF CONSTRUCTION, ALL CONCRETE SHALL BE REMOVED FROM THE SITE AND DISPOSED OF AT AN ACCEPTED WASTE SITE.
WHEN THE CONCRETE WASHOUT AREA IS REMOVED, THE DISTURBED AREA SHALL BE SEEDED AND MULCHED OR OTHERWISE STABILIZED IN
A MANNER ACCEPTED BY THE CITY.
LOCATION OF CONCRETE WASHOUT AREA IS CONCEPTUAL ONLY. FINAL LOCATION TO BE DETERMINED IN THE FIELD AT CONTRACTOR'S
DISCRETION.
{NOTES:
}1.
2.
3.
4.
5.
6.
7.
3H:1V OR FLATTER
SIDE SLOPES
\A1;12" MIN
8'x 8' MIN
OR AS REQUIRED TO
CONTAIN WASTE CONCRETE
\A1;12" \A1;2'-0" MIN.
COMPACTED EMBANKMENT
MATERIAL, TYP.
BERM AROUND PERIMETER
GROUND SURFACE
SIGN TO INDICATE THE
LOCATION OF THE
CONCRETE WASHOUT AREA
CONCRETE WASHOUT AREA
NOT TO SCALE
WIRE ENCLOSED 1 1/2" CRUSHED ROCK
DROP INLET PERIMETER
PLACED AROUND
CINDER BLOCKS
1 1/2" CRUSHED ROCK
WIRE ENCLOSED
DROP INLET BLOCK
INLET
DROP
RUNOFF
FILTERED
OVERFLOW
%%USECTION A-A
%%UPLAN VIEW
STACKED 24" HIGH
(2) CINDER BLOCKS
%%UAND GRAVEL FILTER
A A
DROP INLET
WITH GRATE
WITH NO GAPS (TYP.)
TIGHTLY ABUTTING
%%UWATTLE FILTER
DROP INLET
INLET
%%UPLAN VIEW
\A1;ENTRENCH 3"
CORNERS.
EXCESS AT
FRAME. GATHER
AND STAPLE TO
WITH GEOTEXTILE
WRAP WOOD FRAME
WOOD FRAME
WOOD FRAME
2'' X 4'' WITH GRATE
DROP INLET
3' 0''
1' 6'' MAX.
A DEPTH OF 6'' X 6''
BURY GEOTEXTILE AT
%%uDROP INLET SILT FENCE BOX
FLOW FLOW
NOTE:
ENTRENCH WATTLE 3" INTO
NATURAL GROUND AT THE
OUTSIDE EDGE OF CONCRETE
APRON
INLET PROTECTION AT AREA INLETS SHALL BE INSTALLED WITHIN 48 HOURS OF POURING INLET.
CRUSHED ROCK SHALL BE FRACTURED FACE (ALL SIDES) AND SHALL COMPLY WITH A 1-1/2" MINUS GRADATION. RECYCLED CONCRETE MEETING THIS GRADATION MAY BE USED.
WIRE MESH SHALL BE FABRICATED OF 10 GAUGE WIRE TWISTED INTO A MESH WITH A MAXIMUM OPENING OF 1" (COMMONLY TERMED "CHICKEN WIRE"). ROLL WIDTH SHALL BE 48".
IT IS RECOMMENDED THAT FILTER FABRIC, SUCH AS GRATE MATES OR EQUIVALENT, OR OTHER TEMPORARY BMP BE PLACED BENEATH THE INLET GRATE AND MAINTAINED UNTIL THE
SURROUNDING AREA DRAINING TO THE INLET IS SUFFICIENTLY STABILIZED.
OTHER AREA INLET PROTECTION METHODS WILL BE ALLOWED IF ACCEPTED BY THE CITY.
{
GENERAL NOTES:
}1.
2.
3.
4.
5.
THE CONTRACTOR SHALL INSPECT INLET PROTECTION EVERY TWO WEEKS AND AFTER SIGNIFICANT STORM EVENTS AND MAKE REPAIRS OR CLEAN OUT AS NECESSARY.
SEDIMENT ACCUMULATED UPSTREAM OF INLET PROTECTION SHALL BE REMOVED WHEN THE SEDIMENT DEPTH REACHES 1/2 OF THE DESIGN DEPTH.
TO PREVENT CLOGGING, INLET GRATE FILTER FABRIC SHOULD BE CLEANED OR REPLACED PERIODICALLY.
INLET PROTECTION IS TO REMAIN IN PLACE UNTIL THE UPSTREAM DISTURBED AREA IS STABILIZED AND GRASS COVER IS ACCEPTED.
WHEN INLET PROTECTION AT AREA INLETS ARE REMOVED, THE DISTURBED AREA SHALL BE SEEDED AND MULCHED OR OTHERWISE STABILIZED IN A MANNER ACCEPTED BY THE CITY.
{MAINTENANCE NOTES:
}1.
2.
3.
4.
5.
WATTLE
WATTLE
OR
NOTE:
INSTALLATION OF WATTLE STAKES
MAY VARY
(10" MIN. DIAMETER)
DROP INLET PROTECTION
NOT TO SCALE
01
C7.02
02
C7.02
04
C7.02
05
C7.02
06
C7.02
SF
MANHOLE
ROCK BERM SHALL
2"x 4" WOOD STUD EXTENDED
INTO CONCRETE BLOCKS
WIRE ENCLOSED
1 1/2" WASHED ROCK CONCRETE
BLOCKS
CURB INLET
GRAVEL FILTER WIRE SHALL ENCLOSED BE 2"x4" WOOD STUD
OVERFLOW
FILTERED
RUNOFF
%%uSECTION A-A
A
A
%%uPLAN VIEW
{CURB INLET GRAVEL FILTER
(CONTINUOUS GRADE)}
%%uSECTION B-B
%%uPLAN VIEW
B
B
ROCK BERM SHALL BE PLACED TIGHTLY AGAINST CURB FACE
WIRE ENCLOSED 1 1/2"
WASHED ROCK
CURB AND GUTTER
CURB AND GUTTER
BE PLACED TIGHTLY
AGAINST CURB FACE
GRAVEL FILTER
1/2" TO 1" BELOW TOP OF CURB
TUBULAR
MARKER
IF AREA ADJACENT TO CURB INLET BOX IS NOT STABILIZED, INSTALL A TEMPORARY SEDIMENT/EROSION CONTROL BMP UNTIL THE SURROUNDING AREA IS SUFFICIENTLY STABILIZED.
TUBULAR
MARKER
TUBULAR
MARKER
\A1;3'
\A1;2'
CURB INLET
WIRE ENCLOSED
SETTLED
RUNOFF
GRAVEL FILTER
CURB INLET MANHOLE
{CURB INLET BLOCK AND GRAVEL FILTER
(INLET IN SUMP)}
INTERIM CONFIGURATION INLET PROTECTION IN STREETS SHALL BE INSTALLED WITHIN 48 HOURS OF POURING INLET. INLET PROTECTION (AFTER PAVING) SHALL BE
INSTALLED WITHIN 48 HOURS AFTER PAVING IS PLACED.
WASHED ROCK SHALL COMPLY WITH A 1-1/2" MINUS GRADATION.
WIRE MESH SHALL BE FABRICATED OF 10 GAUGE WIRE TWISTED INTO A MESH WITH A MAXIMUM OPENING OF 1" (COMMONLY TERMED "CHICKEN WIRE"). ROLL WIDTH SHALL
BE 48".
TUBULAR MARKERS SHALL MEET REQUIREMENTS OF MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (MUTCD).
OTHER CURB INLET PROTECTION METHODS WILL BE ALLOWED IF ACCEPTED BY THE CITY.
{GENERAL NOTES:
}1.
2.
3.
4.
5.
THE CONTRACTOR SHALL INSPECT INLET PROTECTION EVERY TWO WEEKS AND AFTER SIGNIFICANT STORM EVENTS AND MAKE REPAIRS OR CLEAN OUT AS NECESSARY.
SEDIMENT ACCUMULATED UPSTREAM OF INLET PROTECTION SHALL BE REMOVED WHEN THE SEDIMENT DEPTH UPSTREAM OF ROCK BERM IS 2 1/2" OF THE CREST.
INLET PROTECTION IS TO REMAIN IN PLACE UNTIL THE UPSTREAM DISTURBED AREA IS STABILIZED AND GRASS COVER IS ACCEPTED. UNLESS THE CITY ACCEPTS EARLIER
REMOVAL OF INLET PROTECTION IN STREETS.
{MAINTENANCE NOTES:
}1.
2.
3.
4" MIN
5" MAX
\A1;BMP WIDTH VARIES \A1;BMP WIDTH VARIES
\A1;BMP WIDTH VARIES \A1;BMP WIDTH VARIES
TUBULAR MARKER TUBULAR MARKER
CURB INLET PROTECTION
NOT TO SCALE
03
C7.02
SF
W
VTC
RS
CWA
IP IP
0" ON BEDROCK
OR HARD SURFACE,
2" IN SOIL
ROCK SOCK SECTION ROCK SOCK PLAN
4" TO 6" MAX AT CURBS,
OTHERWISE 6"-10" DEPENDING
ON EXPECTED SEDIMENT LOADS
ROCK SOCK JOINTING
\A1;12"
\A1;12"
{ROCK SOCK INSTALLATION NOTES
}1.SEE PLAN VIEW FOR:
- LOCATION (S) OF ROCK SOCKS.
2.CRUSHED ROCK SHALL BE 1{}" (MINUS) IN SIZE WITH A FRACTURED FACE (ALL SIDES) AND
SHALL COMPLY WITH GRADATION SHOWN ON THIS SHEET (1{}" MINUS).
3.WIRE MESH SHALL BE FABRICATED OF 10 GAGE POULTRY MESH, OR EQUIVALENT, WITH A
MAXIMUM OPENING OF {}", RECOMMENDED MINIMUM ROLL WIDTH OF 48".
4.WIRE MESH SHALL BE SECURED USING "HOG RINGS" OR WIRE TIES AT 6" CENTERS ALONG ALL
JOINTS AND AT 2" CENTERS ON ENDS OF SOCKS.
5.SOME MUNICIPALITIES MAY ALLOW THE USE OF FILTER FABRIC AS AN ALTERNATIVE TO WIRE
MESH FOR THE ROCK ENCLOSURE.
GRADATION TABLE
SIEVE SIZE
MASS PERCENT
PASSING SQUARE
MESH SIEVES
NO. 4
2" 100
1-1/2" 90-100
1" 20-55
0-15
MATCHES SPECIFICATIONS FOR \A1;NO. {\H1x;4 COARSE 3/8}" AGGREGATE FOR CONCRETE PER AASHTO M43. ALL ROCK SHALL 0-5 BE FRACTURED FACE, ALL SIDES
ROCK SOCK
NOT TO SCALE
07
C7.02
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
Call before you dig.
R
City Engineer Date
Date
Date
Date
Date
Stormwater Utility
Parks & Recreation
Traffic Engineer Date
APPROVED:
CHECKED BY:
CHECKED BY:
CHECKED BY:
CHECKED BY:
CHECKED BY:
Water & Wastewater Utility
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
Environmental Planner
LANDSCAPE ISLAND
W/ 8" DOME GRATE
LANDSCAPE ISLAND
W/ 8" DOME GRATE
LANDSCAPE ISLAND
W/ 8" DOME GRATE
LANDSCAPE ISLAND
W/ 8" DOME GRATE
UNDERGROUND STORAGE
STRUCTURE
SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF
SF SF
SF
SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF
SF SF SF SF
PUBLIC ALLEY
(20' PUBLIC ROW)
LOT 1 LOT 2 LOT 3 LOT 4 LOT 5 LOT 6 TREE TO BE
PROTECTED
TREE TO BE
PROTECTED
TREE TO BE
PROTECTED
NORTH
( IN FEET )
1 inch = ft.
10 0 10 Feet
10
20 30
NOTES:
{1.THE SIZE, TYPE AND LOCATION OF ALL KNOWN UNDERGROUND UTILITIES ARE
APPROXIMATE WHEN SHOWN ON THESE DRAWINGS. IT SHALL BE THE RESPONSIBILITY
OF THE CONTRACTOR TO VERIFY THE EXISTENCE OF ALL UNDERGROUND UTILITIES IN
THE AREA OF THE WORK. BEFORE COMMENCING NEW CONSTRUCTION, THE
CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING ALL UNDERGROUND UTILITIES
AND SHALL BE RESPONSIBLE FOR ALL UNKNOWN UNDERGROUND UTILITIES.
2.EROSION CONTROL PRACTICES, SITE PROTECTION, AND REVEGETATION METHODS
SHALL FOLLOW CITY REGULATIONS.
3.CONTRACTOR SHALL IMMEDIATELY STABILIZE ALL DISTURBED SLOPES BY CRIMP
MULCHING OR SIMILAR METHODS (AS APPLICABLE).
4.TOTAL DISTURBED AREA = 0.44 ACRES
5.SWMP ADMINISTRATOR:
Contact________________________________
Company________________________________
Address________________________________
Phone________________________________
6.CONTRACTOR TO PROVIDE VEHICLE TRACKING CONTROL FOR CONCRETE WASHOUT
AREA IF ACCESS IS OFF PAVEMENT.
7.SEE "GRADING & EROSION CONTROL NOTES" ON SHEET C0.01 OF THE UTILITY PLAN
SET FOR BROWNES ON HOWES PREPARED BY NORTHERN ENGINEERING DATED 02.18.15
FOR ADDITIONAL INFORMATION.
8.THE LOCATION OF EROSION CONTROL MEASURES HAS BEEN SHOWN FOR REFERENCE
ONLY. THE CONTRACTOR MAY ALTER THE NUMBER OR LOCATION OF THE EROSION
CONTROL MEASURES AS REQUIRED.
9.SEE LANDSCAPE PLANS FOR ADDITIONAL INFORMATION ON SEEDING/PLANTING,
REVEGETATION, EROSION FABRIC/BLANKETS, IRRIGATION, HARDSCAPE AND OTHER
TEMPORARY AND PERMANENT SITE STABILIZATION METHODS.}
EXISTING LOT LINES
LEGEND:
PROPOSED ELECTRIC TRANSFORMER
PROPOSED CURB & GUTTER
PROPOSED EASEMENT LINE
PROPERTY BOUNDARY
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
Call before you dig.
R
City Engineer Date
Date
Date
Date
Date
Stormwater Utility
Parks & Recreation
Traffic Engineer Date
APPROVED:
CHECKED BY:
CHECKED BY:
CHECKED BY:
CHECKED BY:
CHECKED BY:
Water & Wastewater Utility
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
Environmental Planner
TF
C7.01
DYNAMIC PLAN
EROSION CONTROL C. Snowdon
C. Snowdon
1" = 10'
PROPOSED BIKE RACK
EXISTING TREE
EXISTING FENCE
X
CIP1
IP
VTC
CWA
SF
TEMPORARY BMP'S:
VEHICLE TRACKING CONTROL
CONCRETE WASHOUT
CURB INLET PROTECTION
DROP INLET PROTECTION
SILT FENCE
NOTE:
ALL BMP'S SHOWN ON THIS PLAN ARE GRAPHIC
REPRESENTATIONS ONLY. FINAL DETERMINATION OF SIZE
AND LOCATION SHALL BE DETERMINED BY THE CONTRACTOR.
SF
1.IT SHOULD BE NOTED THAT ANY EROSION CONTROL PLAN SERVES ONLY AS A GUIDELINE TO THE CONTRACTOR. STAGING AND/OR PHASING OF BEST MANAGEMENT PRACTICES (BMPs) IS
EXPECTED. ADDITIONAL AND/OR DIFFERENT BMPs FROM THOSE ORIGINALLY DEPICTED MAY BE NECESSARY DURING CONSTRUCTION DUE TO CHANGING SITE CONDITIONS OR AS REQUIRED
BY LOCAL AUTHORITIES.
2.THIS EROSION CONTROL PLAN IS SCHEMATIC IN NATURE. AS SUCH, GRAPHICAL SYMBOLS MAY NOT BE TO SCALE, NOR ARE THEY NECESSARILY SHOWN IN THEIR EXACT LOCATION.
3.THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL PERMITTING (CITY, STATE DISCHARGE PERMIT, ETC.) AND COMPLIANCE WITH GOVERNING AUTHORITIES. IT SHALL BE THE
RESPONSIBILITY OF THE CONTRACTOR (OR PERMIT HOLDER) TO ENSURE EROSION CONTROL MEASURES ARE PROPERLY MAINTAINED AND FOLLOWED.
4.CONTRACTOR SHALL IMPLEMENT THE APPROPRIATE EROSION CONTROL MEASURES ACCORDING THE THE CONSTRUCTION SEQUENCING AND LEVEL OF SITE STABILIZATION.
5.CONTRACTOR SHALL IMPLEMENT APPROPRIATE INLET PROTECTION FOR ALL STORMWATER FACILITIES UNTIL SITE IS FULLY STABILIZED.
6.CONTRACTOR SHALL IMPLEMENT APPROPRIATE INLET PROTECTION FOR DOWNSPOUT CONNECTIONS, TO THE STORM DRAIN SYSTEM, UNTIL CONNECTION IS ESTABLISHED WITH
DOWNSPOUT.
7.INLET PROTECTION SHALL BE ADAPTED, AS NECESSARY, TO THE SURROUNDING SURFACE TYPE AND CONDITION (i.e., STAKE-DRIVEN WATTLES FOR BARE SOIL, GRAVEL SOCKS FOR
PAVEMENT, ETC.)
8.CONTRACTOR IS RESPONSIBLE FOR STABILIZING ALL SLOPES, PARTICULARLY THOSE STEEPER THAN 6:1. CRIMP MULCHING, HYDRO MULCHING, EROSION MATS, TEMPORARY IRRIGATION,
AND ADDITIONAL WATTLES OR SILT FENCING MAY BE NECESSARY TO ESTABLISH VEGETATIVE COVER AND STABILIZE THE SLOPE.
9.ADDITIONAL WATTLES, SILT FENCE, OR OTHER MEASURES, MAY BE NECESSARY TO INSURE THAT EACH BUILDING PAD IS STABILIZED THROUGHOUT CONSTRUCTION. AT NO TIME SHALL
SEDIMENT BE ALLOWED TO CROSS THE PUBLIC SIDEWALKS.
10.CONTRACTOR SHALL IMPLEMENT APPROPRIATE PERIMETER PROTECTION FOR AREAS DIRECTING DRAINAGE OFFSITE. PERIMETER PROTECTION SHALL BE ADAPTED, AS NECESSARY, TO
THE SURROUNDING SURFACE TYPE AND CONDITION (i.e., STAKE-DRIVEN SEDIMENT CONTROL LOGS OR SILT FENCE FOR BARE SOIL, SAND BAGS OR GRAVEL SOCKS FOR PAVEMENT, ETC.)
11.FUELING FACILITIES SHALL BE LOCATED AT LEAST ONE HUNDRED (100) FEET FROM NATURAL BODY OF WATER, WETLAND, NATURAL DRAINAGE WAY OR MANMADE DRAINAGE WAY. THE
FUEL TANKS AND FUELING AREA MUST BE SET IN A CONTAINMENT AREA THAT WILL NOT ALLOW A FUEL SPILL TO DIRECTLY FLOW, SEEP, RUN OFF, OR BE WASHED INTO A BODY OF WATER,
WETLAND OR DRAINAGE WAY.
12.CONSTRUCTION WASTE STORAGE (DUMPSTERS) AND PORTABLE SANITATION UNITS (CONSTRUCTION TOILETS) SHALL BE LOCATED AT LEAST FIFTY (50) FEET FROM ANY STORMWATER
INLET, WETLAND, OR DRAINAGE WAY. SAID FACILITIES MUST BE SET IN A CONTAINMENT AREA THAT WILL NOT ALLOW POLLUTANTS TO DIRECTLY FLOW, SEEP, RUN OFF, OR BE WASHED INTO
A BODY OF WATER, WETLAND OR DRAINAGE WAY. DUMPSTERS SHALL BE LOCATED ON FLAT, STABLE GROUND, AND CONSTRUCTION TOILETS SHALL BE STAKED DOWN.
13.THE CONTRACTOR AND ALL SUBCONTRACTORS WILL COOPERATE WITH THE CITY'S CONSTRUCTION INSPECTORS BY CEASING OPERATIONS WHEN WINDS ARE OF SUFFICIENT VELOCITY
TO CREATE BLOWING DUST WHICH, IN THE INSPECTOR'S OPINION, IS HAZARDOUS TO THE PUBLIC HEALTH AND WELFARE.
14.WHERE SEASONAL CONSTRAINTS (E.G., DURING SUMMER AND WINTER MONTHS) INHIBIT PERMANENT SEEDING OPERATIONS, DISTURBED AREAS WILL BE TREATED WITH MULCH AND
MULCH TACKIFIER OR OTHER MATERIALS APPROVED BY EROSION CONTROL STAFF TO PREVENT EROSION.
15.SEE LANDSCAPE PLANS FOR ADDITIONAL INFORMATION ON PLANTING, REVEGETATION, HARDSCAPE AND OTHER PERMANENT SITE STABILIZATION METHODS.
EROSION CONTROL NOTES:
ROCK SOCK RS
No. Revisions:
By: Date:
REVIEWED BY:
N. Haws
DESIGNED BY:
DRAWN BY:
SCALE:
DATE:
02.18.15
PROJECT:
1033-001
Sheet
Of 18 Sheets
BROWNES ON HOWES
DRAWING FILENAME: D:rojects\1033-001\Dwg\Drng\1033-001_EROS.dwg LAYOUT NAME: C7.01 DATE: Feb 18, 2015 - 2:28pm CAD OPERATOR: cody
LIST OF XREFS: [NES-xborder] [1033-001_xAdj] [1033-001_xExst] [1033-001_xPgrad] [1033-001_xPutil] [1033-001_xSite] [1033-001_xTopo]
These drawings are
instruments of service
provided by Northern
Engineering Services, Inc.
and are not to be used for
any type of construction
unless signed and sealed by
a Professional Engineer in
the employ of Northern
Engineering Services, Inc.
NOT FOR CONSTRUCTION
REVIEW SET
301 North Howes Street, Suite 010
Fort Collins, Colorado 80521
E N G I N E E R I N G
N O R T H E RN
PHONE: 970.221.4158 FAX: 970.221.4159
www.northernengineering.com
02.18.15
TABLE OF CONSTRUCTION SEQUENCE AND BMP APPLICATION/REMOVAL
Project: Brownes on Howes Date: February 18, 2015
Contractor to utilize this table to indicate when construction activities occur and when each associated BMP is installed or removed.
CONSTRUCTION PHASE (Monthly) 1 2 3 4 5 6 7 8 9 10 11 12 Comments
Grading
Overlot
Pipeline Installation
Stormwater
Concrete Installation
Building Structure
Miscellaneous
Hardscape Amenities
BEST MANAGEMENT PRACTICES
Temporary
Contour Furrows and Diversion Dikes (Ripping/Disking)
Inlet Protection (IP)
Vehicle Tracking Control (VTC)
Flow Barriers (Bales, Wattles, Etc) (WD)
Concrete Washout Area (CWA)
Preventative Maintenance Activities/Meetings/ etc.
Permanent
Mulching/Sealant
Permanent Seed Planting
Curb and Gutter
Concrete Parking and Drive Aisle
Permeable Pavers
Silt Fence (SF)
Rock Sock (RS)
LANDSCAPE ISLAND
W/ 8" DOME GRATE
LANDSCAPE ISLAND
W/ 8" DOME GRATE
LANDSCAPE ISLAND
W/ 8" DOME GRATE
LANDSCAPE ISLAND
W/ 8" DOME GRATE
UNDERGROUND STORAGE
STRUCTURE
RS
CIP1
IP IP IP IP IP IP
IP
SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF
SF SF
SF
SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF SF
SF SF SF SF
IP
CWA
VTC
IP
SF
SF
SF
SF
SF
SF
SF
SF
SF
SF
PUBLIC ALLEY
(20' PUBLIC ROW)
LOT 1 LOT 2 LOT 3 LOT 4 LOT 5 LOT 6 TREE TO BE
PROTECTED
TREE TO BE
PROTECTED
TREE TO BE
PROTECTED
RS
RS
RS RS RS
NORTH
( IN FEET )
1 inch = ft.
10 0 10 Feet
10
20 30
NOTES:
{1.THE SIZE, TYPE AND LOCATION OF ALL KNOWN UNDERGROUND UTILITIES ARE
APPROXIMATE WHEN SHOWN ON THESE DRAWINGS. IT SHALL BE THE RESPONSIBILITY
OF THE CONTRACTOR TO VERIFY THE EXISTENCE OF ALL UNDERGROUND UTILITIES IN
THE AREA OF THE WORK. BEFORE COMMENCING NEW CONSTRUCTION, THE
CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING ALL UNDERGROUND UTILITIES
AND SHALL BE RESPONSIBLE FOR ALL UNKNOWN UNDERGROUND UTILITIES.
2.EROSION CONTROL PRACTICES, SITE PROTECTION, AND REVEGETATION METHODS
SHALL FOLLOW CITY REGULATIONS.
3.CONTRACTOR SHALL IMMEDIATELY STABILIZE ALL DISTURBED SLOPES BY CRIMP
MULCHING OR SIMILAR METHODS (AS APPLICABLE).
4.TOTAL DISTURBED AREA = 0.44 ACRES
5.SWMP ADMINISTRATOR:
Contact________________________________
Company________________________________
Address________________________________
Phone________________________________
6.CONTRACTOR TO PROVIDE VEHICLE TRACKING CONTROL FOR CONCRETE WASHOUT
AREA IF ACCESS IS OFF PAVEMENT.
7.SEE "GRADING & EROSION CONTROL NOTES" ON SHEET C0.01 OF THE UTILITY PLAN
SET FOR BROWNS ON HOWES PREPARED BY NORTHERN ENGINEERING DATED 02.18.15
FOR ADDITIONAL INFORMATION.
8.THE LOCATION OF EROSION CONTROL MEASURES HAS BEEN SHOWN FOR REFERENCE
ONLY. THE CONTRACTOR MAY ALTER THE NUMBER OR LOCATION OF THE EROSION
CONTROL MEASURES AS REQUIRED.
9.SEE LANDSCAPE PLANS FOR ADDITIONAL INFORMATION ON SEEDING/PLANTING,
REVEGETATION, EROSION FABRIC/BLANKETS, IRRIGATION, HARDSCAPE AND OTHER
TEMPORARY AND PERMANENT SITE STABILIZATION METHODS.}
EXISTING LOT LINES
LEGEND:
PROPOSED ELECTRIC TRANSFORMER
PROPOSED CURB & GUTTER
PROPOSED EASEMENT LINE
PROPERTY BOUNDARY
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
Call before you dig.
R
City Engineer Date
Date
Date
Date
Date
Stormwater Utility
Parks & Recreation
Traffic Engineer Date
APPROVED:
CHECKED BY:
CHECKED BY:
CHECKED BY:
CHECKED BY:
CHECKED BY:
Water & Wastewater Utility
City of Fort Collins, Colorado
UTILITY PLAN APPROVAL
Environmental Planner
TF
C7.00
STATIC PLAN
EROSION CONTROL C. Snowdon
C. Snowdon
1"=10'
PROPOSED BIKE RACK
EXISTING TREE
EXISTING FENCE
X
CIP1
IP
VTC
CWA
SF
TEMPORARY BMP'S:
VEHICLE TRACKING CONTROL
CONCRETE WASHOUT
CURB INLET PROTECTION
DROP INLET PROTECTION
SILT FENCE
NOTE:
ALL BMP'S SHOWN ON THIS PLAN ARE GRAPHIC
REPRESENTATIONS ONLY. FINAL DETERMINATION OF SIZE
AND LOCATION SHALL BE DETERMINED BY THE CONTRACTOR.
SF
TABLE OF CONSTRUCTION SEQUENCE AND BMP
APPLICATION
CONSTRUCTION PHASE
(DESCRIPTION)
PHASE I
(GRADING)
PHASE II
(INFRASTRUCTURE)
PHASE III
(VERTICAL
CONSTRUCITON)
PHASE IV
(PERMANENT
BMP'S)
Grading (Include Offsite)
Overlot
Pipeline Installation
Stormwater
Concrete Installation
Site Walls
Building Structure
Miscellaneous
Hardscape Amenities
BEST MANAGEMENT PRACTICES
Temporary
Inlet Protection (IP)
Vehicle Tracking Control (VTC)
Flow Barriers (Wattles, Rock Socks, etc.) (WD)
Concrete Washout Area (CWA)
Preventative Maintenance Activities/Meetings/etc.
Silt Fence (SF)
Permanent
Mulching/Sealant
Permanent Seed Planting
Sewer Service
Water Service
Curb and Gutter
1.IT SHOULD BE NOTED THAT ANY EROSION CONTROL PLAN SERVES ONLY AS A GUIDELINE TO THE CONTRACTOR. STAGING AND/OR PHASING OF BEST MANAGEMENT PRACTICES (BMPs) IS
EXPECTED. ADDITIONAL AND/OR DIFFERENT BMPs FROM THOSE ORIGINALLY DEPICTED MAY BE NECESSARY DURING CONSTRUCTION DUE TO CHANGING SITE CONDITIONS OR AS REQUIRED
BY LOCAL AUTHORITIES.
2.THIS EROSION CONTROL PLAN IS SCHEMATIC IN NATURE. AS SUCH, GRAPHICAL SYMBOLS MAY NOT BE TO SCALE, NOR ARE THEY NECESSARILY SHOWN IN THEIR EXACT LOCATION.
3.THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL PERMITTING (CITY, STATE DISCHARGE PERMIT, ETC.) AND COMPLIANCE WITH GOVERNING AUTHORITIES. IT SHALL BE THE
RESPONSIBILITY OF THE CONTRACTOR (OR PERMIT HOLDER) TO ENSURE EROSION CONTROL MEASURES ARE PROPERLY MAINTAINED AND FOLLOWED.
4.CONTRACTOR SHALL IMPLEMENT THE APPROPRIATE EROSION CONTROL MEASURES ACCORDING THE THE CONSTRUCTION SEQUENCING AND LEVEL OF SITE STABILIZATION.
5.CONTRACTOR SHALL IMPLEMENT APPROPRIATE INLET PROTECTION FOR ALL STORMWATER FACILITIES UNTIL SITE IS FULLY STABILIZED.
6.CONTRACTOR SHALL IMPLEMENT APPROPRIATE INLET PROTECTION FOR DOWNSPOUT CONNECTIONS, TO THE STORM DRAIN SYSTEM, UNTIL CONNECTION IS ESTABLISHED WITH
DOWNSPOUT.
7.INLET PROTECTION SHALL BE ADAPTED, AS NECESSARY, TO THE SURROUNDING SURFACE TYPE AND CONDITION (i.e., STAKE-DRIVEN WATTLES FOR BARE SOIL, GRAVEL SOCKS FOR
PAVEMENT, ETC.)
8.CONTRACTOR IS RESPONSIBLE FOR STABILIZING ALL SLOPES, PARTICULARLY THOSE STEEPER THAN 6:1. CRIMP MULCHING, HYDRO MULCHING, EROSION MATS, TEMPORARY IRRIGATION,
AND ADDITIONAL WATTLES OR SILT FENCING MAY BE NECESSARY TO ESTABLISH VEGETATIVE COVER AND STABILIZE THE SLOPE.
9.ADDITIONAL WATTLES, SILT FENCE, OR OTHER MEASURES, MAY BE NECESSARY TO INSURE THAT EACH BUILDING PAD IS STABILIZED THROUGHOUT CONSTRUCTION. AT NO TIME SHALL
SEDIMENT BE ALLOWED TO CROSS THE PUBLIC SIDEWALKS.
10.CONTRACTOR SHALL IMPLEMENT APPROPRIATE PERIMETER PROTECTION FOR AREAS DIRECTING DRAINAGE OFFSITE. PERIMETER PROTECTION SHALL BE ADAPTED, AS NECESSARY, TO
THE SURROUNDING SURFACE TYPE AND CONDITION (i.e., STAKE-DRIVEN SEDIMENT CONTROL LOGS OR SILT FENCE FOR BARE SOIL, SAND BAGS OR GRAVEL SOCKS FOR PAVEMENT, ETC.)
11.FUELING FACILITIES SHALL BE LOCATED AT LEAST ONE HUNDRED (100) FEET FROM NATURAL BODY OF WATER, WETLAND, NATURAL DRAINAGE WAY OR MANMADE DRAINAGE WAY. THE
FUEL TANKS AND FUELING AREA MUST BE SET IN A CONTAINMENT AREA THAT WILL NOT ALLOW A FUEL SPILL TO DIRECTLY FLOW, SEEP, RUN OFF, OR BE WASHED INTO A BODY OF WATER,
WETLAND OR DRAINAGE WAY.
12.CONSTRUCTION WASTE STORAGE (DUMPSTERS) AND PORTABLE SANITATION UNITS (CONSTRUCTION TOILETS) SHALL BE LOCATED AT LEAST FIFTY (50) FEET FROM ANY STORMWATER
INLET, WETLAND, OR DRAINAGE WAY. SAID FACILITIES MUST BE SET IN A CONTAINMENT AREA THAT WILL NOT ALLOW POLLUTANTS TO DIRECTLY FLOW, SEEP, RUN OFF, OR BE WASHED INTO
A BODY OF WATER, WETLAND OR DRAINAGE WAY. DUMPSTERS SHALL BE LOCATED ON FLAT, STABLE GROUND, AND CONSTRUCTION TOILETS SHALL BE STAKED DOWN.
13.THE CONTRACTOR AND ALL SUBCONTRACTORS WILL COOPERATE WITH THE CITY'S CONSTRUCTION INSPECTORS BY CEASING OPERATIONS WHEN WINDS ARE OF SUFFICIENT VELOCITY
TO CREATE BLOWING DUST WHICH, IN THE INSPECTOR'S OPINION, IS HAZARDOUS TO THE PUBLIC HEALTH AND WELFARE.
14.WHERE SEASONAL CONSTRAINTS (E.G., DURING SUMMER AND WINTER MONTHS) INHIBIT PERMANENT SEEDING OPERATIONS, DISTURBED AREAS WILL BE TREATED WITH MULCH AND
MULCH TACKIFIER OR OTHER MATERIALS APPROVED BY EROSION CONTROL STAFF TO PREVENT EROSION.
15.SEE LANDSCAPE PLANS FOR ADDITIONAL INFORMATION ON PLANTING, REVEGETATION, HARDSCAPE AND OTHER PERMANENT SITE STABILIZATION METHODS.
EROSION CONTROL NOTES:
ROCK SOCK RS
No. Revisions:
By: Date:
REVIEWED BY:
N. Haws
DESIGNED BY:
DRAWN BY:
SCALE:
DATE:
02.18.15
PROJECT:
1033-001
Sheet
Of 18 Sheets
BROWNES ON HOWES
DRAWING FILENAME: D:rojects\1033-001\Dwg\Drng\1033-001_EROS.dwg LAYOUT NAME: C7.00 DATE: Feb 18, 2015 - 2:28pm CAD OPERATOR: cody
LIST OF XREFS: [NES-xborder] [1033-001_xAdj] [1033-001_xExst] [1033-001_xPgrad] [1033-001_xPutil] [1033-001_xSite] [1033-001_xTopo]
These drawings are
instruments of service
provided by Northern
Engineering Services, Inc.
and are not to be used for
any type of construction
unless signed and sealed by
a Professional Engineer in
the employ of Northern
Engineering Services, Inc.
NOT FOR CONSTRUCTION
REVIEW SET
301 North Howes Street, Suite 010
Fort Collins, Colorado 80521
E N G I N E E R I N G
N O R T H E RN
PHONE: 970.221.4158 FAX: 970.221.4159
www.northernengineering.com
02.18.15