HomeMy WebLinkAboutPRECISION TECHNOLOGY - FDP200029 - - EROSION CONTROL LETTER/REPORTEROSION CONTROL REPORT (SWMP)
19 OLD TOWN SQUARE #238 | FORT COLLINS, CO 80524 | 970-530-4044 | www.unitedcivil.com
P RECISION T ECHNOLOGY
Harmony Technology Park Fifth Filing Lot 2
Fort Collins, CO
Prepared for:
Precision Technology LLC
224 Canyon Avenue Unit 624
Fort Collins, CO 80521
Date:
December 9 th , 2020
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CITY OF FORT COLLINS –STORMWATER UTILITY
700 WOOD STREET
FORT COLLINS,CO 80521
RE: Precision Technology
Erosion Control Report
Fort Collins, Colorado
Project Number: U20015
Dear Staff:
United Civil Design Group, LLC. is pleased to submit this Erosion Control Report (SWMP) for the Precision Technology site in
Fort Collins, Colorado. This report outlines what control measures or Best Management Practices (BMPs) will 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 Discharges Associated with Construction Activity.
Please note that this document is intended to be a dynamic document which will be modified and updated through the
course of site construction to accurately reflect site conditions at all times. Pollutant sources will be continuously
evaluated, BMPs selected, documented, implemented, and pollutant sources re-evaluated. As such, this version of the
SWMP was prepared to facilitate initial plan approvals and permitting, but does not necessarily reflect the final version, or
the transitions throughout the construction process. It shall be the responsibility of the Qualified Stormwater Manager
and/or the permit holder (or applicant thereof) to ensure the plan is properly maintained and followed. The Qualified
Stormwater Manager for this project is:
If you should have any questions or comments as you review this report, please feel free to contact us at your convenience.
Sincerely,
United Civil Design Group, LLC
Nate Stroud, PE, LSIT
Professional Engineer II
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O WNER :
A DDRESS :
P HONE :
E MAIL :
Q UALIFIED S TORMWATER M ANAGER :
A DDRESS :
P HONE :
E MAIL :
C ONTRACTOR :
A DDRESS :
P HONE :
E MAIL :
TO FILLED OUT BY QUALIFIED
STORMWATER MANAGER/CONTRACTOR
SWMP R EVISION DATES :
E STIMATED P ROJECT D ATES :
P ROJECT S TART D ATE :
P ROJECT C OMPLETION D ATE :
CDPHE P ROJECT OR P ERMIT T RACKING N UMBER :
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TABLE OF CONTENTS
I. General Location and Description ......................................................................................................................1
A. SWMP Objective........................................................................................................................... 1
B. Location and Project Description ................................................................................................. 2
C. Description of Development ........................................................................................................ 2
D. Floodplains ................................................................................................................................... 2
II. Site Description ..................................................................................................................................................2
A. Construction Activity Description ................................................................................................ 2
B. Proposed Sequence for Major Activities ...................................................................................... 2
C. Area Estimates ............................................................................................................................. 3
D. Soil Description ............................................................................................................................ 3
E. Existing Vegetation ....................................................................................................................... 3
F. Stream Crossings .......................................................................................................................... 3
G. Potential Pollution Sources .......................................................................................................... 3
H. Non-Stormwater Components of Discharge ................................................................................ 4
I. Receiving Waters .......................................................................................................................... 5
III. CMs and BMPs for Stormwater Pollution Prevention .......................................................................................5
A. Erosion and Sediment Controls .................................................................................................... 5
B. Erosion Control Sequencing ......................................................................................................... 7
C. Spill Prevention and Response Plan ............................................................................................. 8
D. Materials Handling ....................................................................................................................... 9
IV. Other Controls ...................................................................................................................................................9
V. Final Stabilization and Long-term Stormwater Quality ................................................................................... 10
VI. Site Inspections ............................................................................................................................................... 10
VII. Maintenance Procedures ............................................................................................................................ 11
VIII. Record Keeping ............................................................................................................................................ 12
IX. References ...................................................................................................................................................... 13
APPENDICES
APPENDIX A – Inspection Forms
APPENDIX B – Permit Map & Reference Plan Sheets
APPENDIX C – Contractor Inserts (Permit, Inspection Reports, Etc.)
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I.GENERAL LOCATION AND DESCRIPTION
A.EROSION CONTROL REPORT OBJECTIVE
The objective of this Erosion Control Report (SWMP) for the Precision Technolgoy project is to identify the Control Measures
(CMs) and Best Management Practices (BMPs) which, when implemented, will meet the requirements of the Colorado
Department of Public Health & Environment, Water Quality Control Division. According to the State of Colorado Stormwater
Management plan Guidance document, the Erosion Control Report (SWMP) goal is:
“To identify possible pollutant sources at the construction site that may contribute pollutants to stormwater, and identify
control measures that, when implemented in accordance with good engineering, hydrologic, and pollution control practices,
will reduce or eliminate any possible water quality impacts. A stormwater management plan shall be developed for each
construction site covered by the Construction Stormwater Permit. The stormwater management plan must be completed and
implemented at the time the project breaks ground, and revised as construction proceeds, to accurately reflect the conditions
and practices on site.”
Pollutant sources should be continuously evaluated, BMPs selected, documented, implemented, and pollutant sources be re-
evaluated (and the process continued). A current copy of the SWMP shall be kept onsite at all times. A person familiar with
the SWMP and on-site construction activities and clean-up procedures should be designated as the Qualified Stormwater
Manager for the site. The Qualified Stormwater Manager will be responsible for, but not limited to, inspections and inspection
reports, personnel training, regulatory agency contact, SWMP implementation and revisions, field notebooks, and record
keeping of employee activities, contacts, and notifications.
References are found in the Appendix regarding some of the requirements, restrictions, and forms related to the SWMP.
FIGURE 1:SITE VICINITY MAP
Precision Dr Technology PkwyHarmony Rd
Ziegler Rd
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B.LOCATION AND PROJECT DESCRIPTION
The Precision Technology site (referred herein as “the site”) is the development of Lot 2, Harmony Technology Park Fifth
Filing, located in the northwest quarter of Section 4, Township 6 North, Range 68 West of the 6th P.M., City of Fort Collins,
Larimer County, Colorado. The property, consisting of approximately 4.65 acres, is located immediately north of Precision
Drive, approximately 350-feet east of Technology Parkway and currently exists as vacant land in Harmony Technology Park.
The proposed site improvements are limited to the 4.65 acres contained in Lot 2.
The property is bounded by Precision Drive to the south, recently developed commercial businesses to the east and west,
and an existing detention pond and park in the lot to the north. On site detention will not be provided with this site and was
previously included in the Harmony Technology Park Stormwater Plan. A majority of the stormwater on the site currently
drains southeast via sheet flow to existing drainage swales which is then collected by storm sewer infrastructure in Precision
Drive and ultimately conveyed to a regional detention pond (Pond 110) at the intersection of Lady Moon Drive and Rock
Creek Drive. There is also a small portion of the site that drains north via sheet flow to the existing Harmony Commons Pond
which combines ponds 101, 301, and 600 from the previously mentioned master plan. Refer to the appendix for more
information regarding the existing master plan and detention ponds.
C.DESCRIPTION OF DEVELOPMENT
The improved site will ultimately consist of pavement, rooftop, and landscaped areas. The proposed improvements have an
approximate imperviousness of 71% and is divided into several smaller basins as depicted on the Drainage Plan, which can
be found in Appendix B. The planned development for the Precision Technology site consists of the following improvements:
The construction of a 106,700-sf apartment building.
The construction of associated drive lanes, parking, utilities, bioretention pond, and landscaping.
D.FLOODPLAINS
The proposed development is not in a FEMA designated or City Designated floodplain. According to the FEMA Flood Insurance
Rate Map Panel, the site is zoned as an area outside of the 500-year floodplain.
II.SITE DESCRIPTION
A.CONSTRUCTION ACTIVITY DESCRIPTION
Construction activity includes installation of CMs and BMPs; site grading; storm sewer installation; building construction;
concrete and asphalt pavement installation; and landscaping.
B.PROPOSED SEQUENCE FOR MAJOR ACTIVITIES
The estimated sequence for major construction activities is as follows:
• Installation of initial erosion control items
• Grading of the site.
• Installation of utilities
• Building Construction
• Construction of concrete curb, gutter and sidewalk
• Construction of asphalt and concrete pavement
• Landscaping and site stabilization
Construction is estimated to begin during the summer of 2021 and be completed during the winter of 2022.
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C.AREA ESTIMATES
The Precision Technology site is approximately 4.85 acres in size. The limits of disturbance for this Erosion Control Report is
contained within this site and is approximately 4.85 acres. This Erosion Control Report does not include additional offsite area
(for staging, material storage, overburden stockpiles of dirt, borrow areas, etc.) other than that mentioned above.
D.SOIL DESCRIPTION
The USDA’s Web Soil Survey shows that the site consists of a “Type C” soil. The Web Soil Survey indicates the site is
comprised of Nunn Clay Loam (1 to 3% slopes). The on-site soils provide slow infiltration.
E.EXISTING VEGETATION
The site is currently covered with native grasses and weeds. The weed/grass cover is good (ie., heavy or dense cover with
nearly all ground surfaces protected by vegetation).
F.STREAM CROSSINGS
No stream crossings exist with this site.
G.POTENTIAL POLLUTION SOURCES
Potential pollutant sources for this site include the following:
1.Disturbed and stored soils;
Soil disturbance is expected on the site from demolition activities, utility trenching, foundation excavations and general
earthwork phasing. Sediment transport from disturbed soil areas may be controlled utilizing a variety of CMs and
BMPs, including but not limited to, silt fence, inlet filters, sediment control logs, surface roughening, temporary seeding
and rock socks.
It is also expected that there will be stockpiles of dirt on the site from earth disturbing activities. For this site, stockpiles
should be located in areas where silt fence or straw wattles may be placed around the individual stockpiles to contain
the runoff (i.e. landscaped or disturbed earth areas).
2.Vehicle tracking of sediments;
It is anticipated that the contractor will access the property from Oakridge Drive. A vehicle tracking control pad will
be required at each access location on-site during construction to reduce tracking sediment onto the adjacent streets.
Construction fencing should be used to limit access to the site as required.
At the end of each workday, the Contractor shall sweep or scrape Oakridge Drive of sediment that may have
accumulated during the workday.
3.Management of contaminated soils
There are no known contaminated soils on the site. However, if the contractor encounters contaminated soils during
the construction process, the contractor should stop construction immediately, notify appropriate government
authorities, and form a plan to properly contain, remove and remediate the contamination in accordance with all City,
County, State and Federal laws and regulations and in accordance with good construction safety and practice.
4.Loading and Unloading operations
Loading and unloading will take place on the site. These activities should be, where feasible, limited to paved surfaces
within the disturbed limits of the project to minimize contact with exposed soils. BMPs such as construction fence and
silt fence in non-paved areas and rock socks in paved areas should be placed to keep sediment from exiting the
disturbed area limits.
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5.Outdoor storage activities (building materials, fertilizers, chemicals, etc.);
Storage of onsite materials including building materials, fertilizers, waterline, storm sewer, and sanitary sewer will be
covered and placed on pallets to prevent direct contact with the ground and potential surface runoff.
6.Vehicle and equipment maintenance;
Vehicle and equipment maintenance should be performed offsite where feasible. For onsite vehicle and equipment
maintenance, maintenance activities should be completed in designated areas away from adjacent public streets and
within in a contained area through the use of curbs or berms. At a minimum, all vehicle and equipment maintenance
shall be performed on hard surface or gravel areas at least 50’ from any stormwater feature (i.e. inlet, storm sewer,
concentrated runoff, swale, etc.). CMs should include drip pans, drop clothes and/or other containers under vehicles.
7.Significant dust or particulate generating processes;
The Contractor shall take appropriate actions to minimize atmospheric pollution and take reasonable precautions
which may include, but not be limited to:
1.The use of water for control of dusts for construction processes such as demolition, grading, or the clearing of
land.
2.Covering, at all times when in motion, open-bodied trucks transporting materials likely to give rise to airborne
dusts.
3.Require lower speeds for vehicles entering, exiting, and driving within the project limits to minimize the amount
of dust disturbed by moving vehicles.
8.Routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc;
Chemicals, fuels, lubricants, and paints stored on-site will be in water-tight containers and covered as necessary and
stored in a bermed area, a storage building, or within a vehicle to act as secondary containment.
9.On-site waste management practices (waste piles, liquid wastes, dumpsters, etc.);
1.Waste piles should be located in designated areas and shall be covered or contained through the use of curbs or
berms. Liquid wastes should be collected and stored in covered containers and disposed of properly.
2.Solid waste materials, including disposable materials incidental to the major construction activities, will be
collected in on site dumpsters. The containers will be emptied periodically and trucked away from the site.
Dumpsters should have covers.
10.Concrete truck / equipment washing, including the concrete truck chute and associated fixtures and equipment;
A dedicated concrete washout area is necessary for this project. The contractor shall clean out equipment within the
washout area so that runoff is not allowed to leave site and enter the public streets or neighboring properties.
11.Dedicated asphalt and concrete batch plants;
There will not be dedicated asphalt or concrete batch plants on this site.
12.Non-industrial waste sources such as worker trash and portable toilets;
Worker’s trash shall be disposed of in an onsite dumpster. The site should be free of trash at the end of each working
day.
Portable toilets shall be utilized by construction personnel and serviced regularly by a commercial operator. They shall
be located a minimum of 5 feet from the curb or 50 feet from inlets. If sanitary facilities are located on a paved surface,
toilets shall be equipped with a containment pan or a secondary containment BMP. Regardless of location all portable
toilets shall be anchored per manufacturer recommendations.
H.NON-STORMWATER COMPONENTS OF DISCHARGE
In the event that groundwater is encountered during trenching or excavation operations, a temporary sediment/retention
basin should be constructed to store pumped uncontaminated dewatering flows onsite. Note that the CDPHE may also
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require a separate Construction Dewatering permit. For more information on construction dewatering refer to the
Stormwater Fact Sheet which can be found at https://www.colorado.gov/cdphe.
The other non-storm water components of discharge include, but are not limited to, water line flushing, irrigation to establish
seeding, washing out concrete trucks, and watering for dust mitigation, and compaction. It is important for the contractor to
manage the runoff from these items utilizing the CMs and BMPs mentioned in this report (i.e. sediment traps, silt fence, straw
wattles, concrete washout areas, surface roughening, etc.).
I.RECEIVING WATERS
The majority of developed runoff is designed to be collected and conveyed to a proposed bioretention facility and ultimately
to existing detention facilities downstream and south of the site. There currently is storm sewer in Precision Drive which will
collect runoff from the site in its proposed condition. Erosion Control methods detailed in this report are intended to protect
this off-site downstream inlet from collecting excess sediment during construction.
III.CMS AND BMPS FOR STORMWATER POLLUTION PREVENTION
A.EROSION AND SEDIMENT CONTROLS
Once construction activity begins, Control Measures (CMs) and Best Management Practices (BMPs) intended to contain
sediment onsite must be constructed, inspected and repaired as necessary. Such controls must be functional before upslope
land disturbance takes place. The CMs and BMPs will be installed as shown on the enclosed Erosion Control and Stormwater
Management Plans. They must be supplemented as on-site experience proves necessary in order to control sediment,
pollutant discharge, and ensure public safety.
Erosion Control (SWMP) drawings are located in the Appendix that include the minimum required CMs and BMPs found on
the Erosion Control Plans. The Erosion Control (SWMP) drawings should be filled in with the appropriate CMs and BMPs as
they are constructed/placed within or removed from the project site.
The following temporary and permanent CMs and BMPs will be installed and maintained to control on-site erosion and
prevent sediment and other pollutants from traveling off-site during construction. The descriptions below provide some
information about each CM or BMP, but further information can be found in Urban Storm Drainage Criteria Manual, Volume
3 – Best Management Practices by Urban Drainage and Flood Control District.
CM or BMP Type Abbreviation Description
Construction
Fence
Temporary CF The contractor is to place construction fencing around development as
needed to limit access by construction equipment and personal vehicles
to designated areas of ingress and egress.
Regular
Meetings
Temporary Regular meetings with on-site workers including builders, suppliers,
landscape personnel, etc. should be conducted so that they are kept up
to date with site standard operating procedures. Duration and frequency
of regular meetings is to be determined by the contractor.
Staging Areas Temporary SA Provided during the construction process at least 100’ from any
stormwater conveyance. Staging areas include locations for vehicle
fueling, concrete truck washout, material storage and transfer,
equipment maintenance and cleaning, and other construction activities.
These areas will be maintained as isolated locations that allow for
contaminants to be concentrated and removed from the site as
necessary. Concrete washout areas shall be designed such that washout
water cannot leave the location, nor shall storm water runoff wash
concrete from the locations. The location of the staging area shown on
the Erosion Control drawing is approximate.
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Silt Fence Temporary SF Woven synthetic permeable fabric that filters runoff. Silt fence is installed
prior to earthmoving activities and is placed downstream of areas where
runoff from construction activities is expected to occur, especially along
the site perimeter to allow sediment to settle from runoff before water
leaves the construction site. Silt fences will be installed per
manufacturer’s recommendations. Silt fence encourages sheet flow and
is not intended to be used in areas of concentrated flow. If concentrated
flow is encountered during the placement of the fence, an alternative
BMP shall be used and the SWMP should be updated to reflect this
change.
Sediment
Control Logs
Temporary SCL Linear roll made of natural materials such as straw, coconut fiber, of
other fibrous material trenched into the ground and held with a wooden
stake. Sediment Control Logs are designed to act as a sediment barrier to
intercept sheet flow runoff from disturbed areas. They are often used as
check dams in drainage swales or small drainage ditches.
Inlet
Protection
Temporary IP/CS Helps prevent soil and debris from the site from entering the storm drain
inlets and usually consists of a sediment filter around or upstream of the
storm drain inlet. Inlet protection allows storm water to flow into the
drain but only after excess sediment has been filtered out. Inlet
protection will be used on existing and proposed storm inlets and will be
installed at such time as construction of the storm sewer system occurs.
Inlet protection for this site will consist rock socks as shown in the
Construction Details.
Rock Socks Temporary RS Constructed of gravel wrapped via wire mesh or geo textile to form an
elongated cylindrical filter. Rock Socks are designed to trap sediment
during construction on roadways during events that produce stormwater
runoff. Rock Socks are typically utilized at the perimeter of disturbed
areas to control sediment loading. Rock Socks are used in inlet protection
application when construction of roadways is complete, and they are
directly connected to a receiving storm system.
Surface
Roughening
Temporary SR Provided following overlot grading activities to slow the affects of wind
erosion. Roughening can be used as a temporary BMP and is a slope
protection technique used for creating unevenness on bare soil through
the construction of furrows (groove cuts) running across a slope or by
utilization of construction equipment to track the soil surface. The
primary function of surface roughening is to reduce erosion potential by
decreasing runoff velocities, reducing the length of sheet flow trapping
sediment, and increasing infiltration of water into the soil.
Temporary
Seeding
Temporary Establishment of a temporary vegetative cover on a graded area that will
be exposed for longer than 30 days. Temporary seeding can be used on
areas requiring temporary protection that will eventually need
permanent vegetation at the completion of the construction or it can be
used for areas that will be re-disturbed after a period of inactivity.
Vehicle
Tracking
Control
Temporary VTC Stabilized stone pad located at points of ingress and egress on a
construction site and acts as a temporary BMP. The stone pad is designed
to reduce the amount of mud transported onto public roads by
construction traffic by removing mud and sediment from the vehicle’s
wheels when it drives over the gravel pad. These areas are limited to the
minimum number necessary to provide functional construction access
and installed prior grading activities. Whenever the construction
entrance exists onto a public road, the road shall be cleaned at the end of
each day. Vehicle Tracking Control should also be used at the stockpile
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area exit if it is adjacent to a paved roadway. Fractured rock is preferred
over rounded rock.
Concrete
Washout Area
Temporary CWA An area to washout concrete trucks shall be established and maintained
through the completion of the concrete work.
Wind Borne
Sediment and
Dust Control
Temporary Provided during the construction process to control wind borne
sediment. During grading activities, water will be applied to the disturbed
soils for the purpose of maintaining cohesion with clay type soils and also
to meet moisture requirements for compaction of disturbed soils. Other
measures of mitigation for wind erosion may include the timely
installation of seed and mulch following the establishment of final grade.
Open areas should be kept in a roughened condition (see Surface
Roughening above).
Grass Lined
Swales
Permanent Landscaped channels constructed generally below grade to convey runoff
or channel water to a desired location. The grass-lined areas allow for
infiltration to occur as well as including a flow path across a vegetated
surface slowing the conveyance rate of storm water runoff.
Permanent
Seeding and
Planting
Permanent Establishment of a permanent perennial vegetation such as trees, shrubs,
vines, grasses/sod, or legumes on exposed areas for final permanent
stabilization in order to provide stabilization of the soil by holding soil
particles in place. It also reduces storm water runoff velocity, maintains
sheet flow, protects the soil surface from erosion, promotes infiltration of
runoff, and improves wildlife habitat.
Preservation
of Existing
Vegetation
Permanent Occur where no construction activity is expected to occur. Preservation
of natural vegetation is generally a permanent BMP and is applicable to
construction sites with pre-existing vegetation. Only land needed for
building activities and vehicle traffic needs is to be cleared.
Storm Sewer
Outlet
Protection
Permanent OP Structurally lined aprons or other energy dissipating devices placed at the
outlets of pipes or paved channel sections. Outlet protection devices
prevent scour at storm water outlets and minimize the potential of
downstream erosion by reducing the velocity of storm water flows. Rip-
rap and grouted rip-rap, or scour protection matting (as shown on plans)
will be used downstream of storm sewer outfalls as pipe outlet
protection. Outlet Protection is installed with the storm sewer
construction and serves as a permanent structural BMP.
B.EROSION CONTROL SEQUENCING
A SWMP drawing is located in the Appendix that includes the minimum required CMs and BMPs found on the Erosion Control
Plan. This SWMP drawing should be filled in with the appropriate CMs and BMPs by referencing the Erosion Control Sheet as
they are constructed/placed within or removed from the project site.
The Erosion Control sequencing for construction is as follows:
CM or BMP Type Abbreviation Location and Notes
PRIOR TO CONSTRUCTION
Regular Meetings Temporary N/A
Preservation of
Existing
Vegetation
Permanent Areas not disturbed by construction activity.
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Silt Fence Temporary SF Parallel to the northern, southern and western sides of the property at
disturbed locations on-site.
Staging Areas Temporary SA See Overall Grading & Erosion Control Plan
Vehicle Tracking
Control Temporary VTC One (1) located at access point along Precision Drive
Construction
Fence Temporary CF N/A
DURING CONSTRUCTION
Regular Meetings Temporary N/A
Wind Borne
Sediment and Dust
Control
Temporary N/A
Inlet Protection Temporary IP All Inlets
Rock Socks Temporary RS As shown on Overall Grading and Erosion Control Plan
Sediment Control
Logs Temporary SCL As shown on Overall Grading and Erosion Control Plan
Street Sweeping
and Cleaning Temporary N/A
Concrete Washout
Area Temporary CWA As shown on Overall Grading and Erosion Control Plan
Surface
Roughening Temporary SR As shown on Overall Grading and Erosion Control Plan
Temporary
Seeding Temporary As shown on Overall Grading and Erosion Control Plan
Grass Lined Swales Permanent As shown on Overall Grading and Erosion Control Plan
Permanent
Seeding and
Planting
Permanent As shown on Overall Grading and Erosion Control Plan
Storm Sewer
Outlet Protection Permanent OP All storm sewer outlets.
POST CONSTRUCTION
All CMs or BMPs All BMPs shall be maintained until final site stabilization.
C.SPILL PREVENTION AND RESPONSE PLAN
In the event of a spill or accident, the spill shall be contained with a spill kit in order to prevent the contaminants from flowing
off-site or soaking into the soil. Site personnel should be briefed in regular meetings of the presence of the spill kit and how
the kit should be used in the event of a spill. Once contained, the contaminated materials shall be properly disposed of as
approved by the Qualified Stormwater Manager and local, state, and federal jurisdictions.
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For fueling areas, an appropriate absorbent (e.g. absorbent pads, oil spill kits, etc.) shall be made available and site personnel
should be briefed in regular meetings of the presence of the absorbent and how the absorbent should be used in the event
of a spill. Containers shall be available for used absorbents.
Concrete washing of concrete trucks or other equipment shall be completed in a specified concrete washout area and in a
manner and location that does not allow materials or wash water to be discharged from the site or into a storm drain system
or stream.
Once construction is completed, or as required during the course of construction, concrete waste and contaminated soil shall
be disposed of properly.
The Qualified Stormwater Manager and City Inspector should be notified immediately in the event of spills. Depending on
the nature of the spill and the material involved, the CDPHE (24-hour spill reporting line 1– 877-518-5608), downstream water
users, or other agencies may also need to be notified. 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.
D.MATERIALS HANDLING
The site development will include the appropriate construction staging and stockpiling areas to be identified by the contractor
on the SWMP Map. Stormwater runoff generated from the staging areas will be routed to a temporary sedimentation area
where runoff will be contained and filtered before being discharged off site. The staging/stockpile area(s) may be moved to
a location no closer than 100’ from a stormwater conveyance and the SWMP should be updated with the actual location of
the stockpile/staging area(s). If relocated, the Erosion Control Report should be updated with the actual location of the
stockpile/staging area(s).
Loading and unloading will take place on the site. These activities should be, where feasible, limited to paved surfaces within
the disturbed limits of the project to minimize contact with exposed soils. BMPs such as construction fence and silt fence in
non-paved areas and rock socks in paved areas should be placed to keep sediment from exiting the disturbed area limits.
Chemicals, fuels, lubricants, and paints typical with building construction stored on-site will be in water-tight containers and
covered as necessary and stored in a bermed area, a storage building, or within a vehicle to act as secondary containment.
Storage of onsite materials including building materials, fertilizers, waterline, sanitary sewer, and storm sewer will be covered
and placed on pallets to prevent direct contact with the ground and potential surface runoff.
Other hazardous waste disposal (that is not typical to residential or commercial building construction) is not included within
this SWMP. Concrete and asphalt batch plants are not anticipated on this site and thus are not included in this SWMP.
IV.OTHER CONTROLS
The following includes other measures to control pollutants:
Solid waste materials, including disposable materials incidental to the major construction activities, will be collected
in containers. The containers will be emptied periodically and trucked away from the site. Dumpsters should have
covers.
Water used to establish and maintain grass, for dust control, and for other purposes during the construction phase
must originate from a public water supply or private well approved by the Colorado Department of Public Health
and Environment unless otherwise approved.
Sanitary facilities shall be provided at the site throughout construction activities. They shall be utilized by
construction personnel and serviced regularly by a commercial operator. They shall be located a minimum of 5 feet
from the curb or 50 feet from inlets and must be anchored. If sanitary facilities are located on a paved surface, a
secondary containment CM will need to be constructed.
E ROSION C ONTROL R EPORT
P RECISION T ECHNOLOGY
F ORT C OLLINS ,CO
10 U20015 - EC Report
Access from paved roads should be limited.
CMs such as tarps and drip pans should be used for painting, stucco, dry-wall etc. operations.
Super-chlorinated water used for flushing water distribution systems will be de-chlorinated prior to discharging
from the site by aeration, retention, dissipation, or chemical treatment.
V.FINAL STABILIZATION AND LONG-TERM STORMWATER QUALITY
Final stabilization is reached when all soil disturbing activities at the site have been completed and vegetative cover has been
established with a density of at least 70 percent of pre-disturbance levels or when equivalent permanent erosion reduction
methods have been utilized. Upon final stabilization, temporary CMs and BMPs may be removed, unless they are required to
remain in place for future phasing.
Primary long-term water quality will be provided through the use of a proposed inlet filter and Saffle Baffle, both being
structural/mechanical treatment techniques. Secondary water quality is being provided in areas where grass-lined swales
are provided for storm water conveyance as the soft bottom/overbank areas allow for infiltration to occur as well as including
a flow path across a vegetated surface slowing the conveyance rate of storm water runoff. Refer to the Permanent
Stormwater Quality Exhibit for locations of water quality structures and additional information.
VI.SITE INSPECTIONS
Regular inspections, testing of equipment, timely maintenance of the equipment, and complete records of the maintenance
and inspections of the equipment shall be conducted by the Qualified Stormwater Manager and are essential to the
effectiveness of the Erosion Control Report. The maintenance and inspection records will be kept on site and made available
to any local, state, or federal officials upon request.
Inspections must include the observation of the construction site perimeter, runoff discharge points, disturbed areas,
designated haul routes, material and waste storage areas exposed to precipitation, locations where vehicles exit the site,
staging areas (including concrete washout areas and fueling areas), erosion and sediment control measures identified in this
SWMP, and any other structural CMs or BMPs that may require maintenance. Per the CDPHE, the inspection must include
the following requirements:
Visually verify whether all implemented control measures are in effective operational condition and are working
as designed in their specifications to minimize pollutant discharges.
Determine if there are new potential sources of pollutants.
Assess the adequacy of control measures at the site to identify areas requiring new or modified control
measures to minimize pollutant discharges.
Identify all areas of non–compliance with the Construction Stormwater Permit requirements and, if necessary,
implement corrective action as described below.
Routine inspections must be conducted in accordance with one of the following schedules:
1.At least one inspection every 7 calendar days or
2.At least one inspection every 14 calendar days and within 24 hours after the end of any precipitation or
snowmelt event that causes surface erosion.
o Note that post-storm inspections may be used to fulfill the 14-day routine inspection requirement.
Inspections may be conducted on either the 7-day or 14-day schedule and may switch between these schedules as
appropriate for the site; however, the inspection schedule must be noted on the inspection reports.
When site conditions make the required schedule impractical, the permittee may petition the City of Loveland or
CDPHE to grant an alternate inspection schedule. The alternative inspection schedule may not be implemented prior
to written approval by the City and/or CDPHE and incorporation into the plan.
E ROSION C ONTROL R EPORT
P RECISION T ECHNOLOGY
F ORT C OLLINS ,CO
11 U20015 - EC Report
Site inspections must be conducted 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.
The CDPHE does allow for reduced inspection frequencies under the following conditions:
Post-Storm Inspections at Temporarily Idle Sites
o For permittees choosing to combine 14-day inspections and post-storm-event inspections, if no construction
activities will occur following a storm event, post-storm event inspections must be conducted prior to re-
commencing construction activities, but no later than 72 hours following the storm event. The delay of any
post-storm event inspection must be documented in the inspection record. Routine inspections must still be
conducted at least every 14 calendar days.
Inspections at Completed Sites/Areas
o When the site, or portions of a site are awaiting establishment of a vegetative ground cover and final
stabilization, the permittee must conduct a site inspection at least once every 30 days.
o Post-storm event inspections are not required.
o This reduced inspection schedule is allowed if all of the following criteria are met:
All construction activities resulting in ground disturbance are complete;
All activities required for final stabilization, in accordance with the plan, have been completed, with the
exception of the application of seed that has not occurred due to seasonal conditions or the necessity for
additional seed application to augment previous efforts; and
The plan has been amended to locate those areas to be inspected on a reduced schedule.
Winter Conditions Inspections Exclusion
o Inspections are not required for sites that meet all of the following conditions:
Construction activities are temporarily halted,
Snow cover exists over the entire site for an extended period, and
Melting conditions posing a risk of surface erosion do not exist.
o When this inspection exclusion is implemented, the following information must be documented in
the inspection reports:
Dates when snow cover existed;
Date when construction activities ceased; and
Date melting conditions began.
VII.MAINTENANCE PROCEDURES
Upon completion of each phase of construction, appropriate measures shall be taken to inspect and maintain existing erosion
control features, as described herein or per manufacturers specifications (whichever is more stringent) and install new
erosion control elements associated with each phase of construction.
Preventative maintenance also involves the regular inspection and testing of equipment, timely maintenance of the
equipment, and complete records of the maintenance and inspections of the equipment. The maintenance and inspection
records will be kept on site and made available to local, state, or federal officials upon request.
E ROSION C ONTROL R EPORT
P RECISION T ECHNOLOGY
F ORT C OLLINS ,CO
12 U20015 - EC Report
The following includes some maintenance procedures:
Erosion and sediment control measures determined, upon inspection, to be in need of repair shall be maintained before
the next anticipated storm event or as necessary to maintain continued effectiveness of erosion and sediment control
measures. If it is impractical to maintain erosion and sediment control measures before the next storm event,
maintenance should be accomplished as soon as practical.
Locations where vehicles enter or exit the site shall be inspected for evidence of sediment being tracked off-site by
construction traffic. Such sediment shall be removed before it can be conveyed to the receiving storm drains or creeks.
Seeded areas will be checked to see that grass coverage is maintained. Areas will be watered, fertilized and reseeded as
needed.
It is the responsibility of the Operator to maintain effective pollutant discharge controls. Actual physical site conditions
or contractor practices could make it necessary to install more control than are shown on the Erosion Control Plan. For
example, localized concentrations of surface runoff or unusually steep areas could require additional erosion control
devices. Assessing the need for and implementing additional controls will be a continuing aspect of the SWMP until final
stabilization. This plan intends to control water-borne and liquid pollutant discharges by some combination of
interception, filtration, and containment. Parties implementing this plan must remain alert to the need to periodically
refine and update the plan in order to accomplish the intended goals.
Sediment that has escaped the construction site must be removed at a frequency sufficient to minimize off-site impacts.
VIII.RECORD KEEPING
Records should include complete inspection reports for each inspection, maintenance, and/or repair. A record-keeping
system is recommended in managing inspection and maintenance reports and should include all maintenance records, spill
response, weather conditions, training, correspondence, etc. At a minimum, the following record keeping for the project
should include:
1.The permittee must retain a hardcopy of the SWMP at the construction site throughout the life of the project.
2.The SWMP should be considered a "living document" that will be continuously reviewed and modified, including
but not limited to: additions, deletions, and changing locations of control measures. These changes will be marked
in the plans, dated and initialed at time of occurrence.
3.All inspection and maintenance activities or other repairs will be documented and the records kept for review upon
request. A blank copy of the CDPHE Stormwater Inspection Report Template are both provided in Appendix A.
4.Records of spills, leaks or overflows that result in the discharge of pollutants must be documented and maintained.
Information that should be recorded for all occurrences include the time and date, weather conditions, reasons for
spill, etc. A release of any chemical, oil, petroleum product, sewage, etc., which may enter state waters must be
reported immediately to the City inspector and the State of Colorado Spill Hotline at 1-877-518-5608.
5.Incidents of noncompliance, such as uncontrolled releases of pollutants including mud, muddy water or
measurable quantities of sediment found off-site will be noted, along with a brief explanation as to measures taken
to prevent future violations and measures taken to clean up sediment that has left the site.
E ROSION C ONTROL R EPORT
P RECISION T ECHNOLOGY
F ORT C OLLINS ,CO
13 U20015 - EC Report
IX.REFERENCES
1.Final Drainage Report for Precision Technology, United Civil Design Group, LLC., December 2020.
2.Larimer County Urban Area Street Standards, Larimer County, Colorado, Repealed and Reenacted, Effective September
19, 2016.
3.Natural Resources Conservation Service Web Soil Survey at www.websoilsurvey.nrcs.usda.gov/app.
4.Urban Storm Drainage Criteria Manual, Urban Drainage and Flood Control District, Wright Water Engineers, Inc., Denver,
Colorado 2002.
5.Fort Collins Stormwater Criteria Manual, City of Fort Collins, adopted in 2011, revised in December 2018.
6.State of Colorado, Stormwater Discharges Associated with Construction Activity, Stormwater Management Plan
Preparation Guides, www.colorado.gov.
A PPENDIX A
I NSPECTION F ORMS
31 |
Appendix D: Stormwater Inspection Report Template
Facility Name Permittee
Date of Inspection Weather Conditions
Permit Certification # Disturbed Acreage
Phase of Construction Inspector Title
Inspector Name
Is the above inspector a qualified stormwater manager?
(permittee is responsible for ensuring that the inspector is a qualified stormwater manager)
YES NO
INSPECTION FREQUENCY
Check the box that describes the minimum inspection frequency utilized when conducting each inspection
At least one inspection every 7 calendar days
At least one inspection every 14 calendar days, with post-storm event inspections conducted within
24 hours after the end of any precipitation or snowmelt event that causes surface erosions
This is this a post-storm event inspection. Event Date: _____________________
Reduced inspection frequency - Include site conditions that warrant reduced inspection frequency
Post-storm inspections at temporarily idle sites
Inspections at completed sites/area
Winter conditions exclusion
Have there been any deviations from the minimum inspection schedule?
If yes, describe below.
YES NO
INSPECTION REQUIREMENTS*
i. Visually verify all implemented control measures are in effective operational condition and are working as
designed in the specifications
ii. Determine if there are new potential sources of pollutants
iii. Assess the adequacy of control measures at the site to identify areas requiring new or modified control measures
to minimize pollutant discharges
iv. Identify all areas of non-compliance with the permit requirements, and if necessary, implement corrective action
*Use the attached Control Measures Requiring Routine Maintenance and Inadequate Control Measures
Requiring Corrective Action forms to document results of this assessment that trigger either maintenance or
corrective actions
AREAS TO BE INSPECTED
Is there evidence of, or the potential for, pollutants leaving the construction site boundaries, entering the stormwater
drainage system or discharging to state waters at the following locations?
NO YES
If "YES” describe discharge or potential for discharge below.
Document related maintenance, inadequate control measures
and corrective actions Inadequate Control Measures
Requiring Corrective Action form
Construction site perimeter
All disturbed areas
Designated haul routes
Material and waste storage areas
exposed to precipitation
Locations where stormwater has the
potential to discharge offsite
Locations where vehicles exit the site
Other: ____________________
CONTROL MEASURES REQUIRING ROUTINE MAINTENANCE
Definition: Any control measure that is still operating in accordance with its design and the requirements of the permit, but requires maintenance to prevent a
breach of the control measure. These items are not subject to the corrective action requirements as specified in Part I.B.1.c of the permit.
Are there control measures requiring maintenance? NO YES
If “YES” document below
Date
Observed Location Control Measure Maintenance Required Date
Completed
INADEQUATE CONTROL MEASURES REQUIRING CORRECTIVE ACTION
Definition: Any control measure that is not designed or implemented in accordance with the requirements of the permit and/or any control measure that is not
implemented to operate in accordance with its design. This includes control measures that have not been implemented for pollutant sources. If it is infeasible
to install or repair the control measure immediately after discovering the deficiency the reason must be documented and a schedule included to return the
control measure to effective operating condition as possible.
Are there inadequate control measures requiring corrective action?
NO YES
If “YES” document
below
Are there additional control measures needed that were not in place at the time of
inspection?
NO YES
If “YES” document
below
Date
Discovered Location Description of Inadequate
Control Measure Description of Corrective Action
Was deficiency corrected when
discovered? YES/NO
if “NO” provide reason and schedule to correct
Date
Corrected
REPORTING REQUIREMENTS
The permittee shall report the following circumstances orally within twenty-four (24) hours from the time the permittee becomes aware of the circumstances,
and shall mail to the division a written report containing the information requested within five (5) working days after becoming aware of the following
circumstances. The division may waive the written report required if the oral report has been received within 24 hours.
All Noncompliance Requiring 24-Hour Notification per Part II.L.6 of the Permit
a. Endangerment to Health or the Environment
Circumstances leading to any noncompliance which may endanger health or the environment regardless of the cause of the incident (See Part II.L.6.a
of the Permit)
This category would primarily result from the discharge of pollutants in violation of the permit
b. Numeric Effluent Limit Violations
o Circumstances leading to any unanticipated bypass which exceeds any effluent limitations (See Part II.L.6.b of the Permit)
o Circumstances leading to any upset which causes an exceedance of any effluent limitation (See Part II.L.6.c of the Permit)
o Daily maximum violations (See Part II.L.6.d of the Permit)
Numeric effluent limits are very uncommon in certifications under the COR400000 general permit. This category of noncompliance only applies if
numeric effluent limits are included in a permit certification.
Has there been an incident of noncompliance requiring 24-hour notification?
NO YES
If “YES” document
below
Date and
Time of
Incident
Location Description of
Noncompliance Description of Corrective Action
Date and Time of
24 Hour Oral
Notification
Date of 5 Day Written
Notification *
*Attach copy of 5 day written notification to report. Indicate if written notification was waived, including the name of the division personnel who granted waiver.
After adequate corrective action(s) and maintenance have been taken, or where a
report does not identify any incidents requiring corrective action or maintenance, the
individual(s) designated as the Qualified Stormwater Manager, shall sign and certify the
below statement:
“I verify that, to the best of my knowledge and belief, all corrective action and
maintenance items identified during the inspection are complete, and the site is
currently in compliance with the permit.”
_________________________________ ____________________________________
Name of Qualified Stormwater Manager Title of Qualified Stormwater Manager
_________________________________ _____________________________________
Signature of Qualified Stormwater Manager Date
Notes/Comments
A PPENDIX B
P ERMIT M AP &R EFERENCE P LAN S HEETS
LIMITS OF OVERALL
PROJECT DISTURBANCE
(4.85 ACRES)LADYMOON DRIVEHARMONY ROAD
ROCK CREEK DRIVE
ZIEGLER ROADKECHTER ROAD
0'1000'2000'
SCALE: 1" = 1000'
500'C:\UNITED CIVIL DROPBOX\PROJECTS\U20015 - PRCS PRECISION TECH II\CADD\ET\CDPHE DISCHARGE MAP.DWGCDPHE DISCHARGE MAPPATH:DRAWING NAME:SHEET SIZE: 8.5 x 11PRECISION TECHNOLOGY
CDPHE DISCHARGE PERMIT MAP
JOB NUMBER:U20015 NOTE:THIS EXHIBIT WAS PREPARED FOR INFORMATION ONLY AND THE ENGINEER PREPARING THESE PLANS WILL NOT BE RESPONSIBLE FOR UNAUTHORIZED USE OF THEM.DATE:December 7, 2020 PREPARED FOR:SHEET OF1 1NORTH19 OLD TOWN SQUARE #238 | FORT COLLINS, CO 80524 | (970) 530-4044 | www.unitedcivil.com
UNITED CIVIL
Design Group
RDRDRDRDRDRDRDRDRDOVFRDA1.60.500.951.00A1.50.460.951.00A1.40.450.951.00A1.30.470.951.00A1.20.060.951.00A1.10.100.951.00B1.10.080.951.00B1.20.150.951.00B1.30.100.951.00B1.40.060.951.00B1.50.060.951.00A40.100.951.00A30.160.861.00A20.100.851.00A10.240.250.31D10.100.550.69E10.090.250.31E20.300.780.98A60.520.841.00A50.080.250.31B10.570.460.58C10.100.420.53LOT 2HARMONY TECHNOLOGY PARKFIFTH FILINGLOT 1HARMONY TECHNOLOGY PARKFOURTH FILINGPORTION OF LOT 2HARMONY TECHNOLOGY PARKSECOND FILINGTRACT AHARMONY TECHNOLOGY PARKSIXTH FILINGLOT 1HARMONY TECHNOLOGY PARKFIFTH FILINGPRECISION DRIVEPROPOSED BUILDIINGFFE = 4916.50EXISTING STORM SEWERLOT LINELOT LINELOT LINELOT LINEPOND OUTLET STRUCTUREBIORETENTION POND A
DRAINAGE SWALE1.5' SPILL C&G1.5' CATCH C&G1.5' SPILL C&G1.5' CATCH C&GSTORM LINE B(SEE SHEET C3.10)STORM LINE C(SEE SHEET C3.11)1.5' SPILL C&G1.5' CATCH C&GCURB CUTSTORM LINE D(SEE SHEET C3.12)TRENCH DRAINSTORM LINE C2(SEE SHEET C3.10)EXISTING BIORETENTION POND9' UTILITY EASEMENT30' UTILITY & DRAINAGE EASEMENT45' UTILITY & DRAINAGEEASEMENTDRAINAGE EASEMENT24' EMERGENCY ACCESS EASEMENT24' EMERGENCY ACCESS EASEMENTDRAINAGE EASEMENTDRAINAGE EASEMENTCURB CUT64' ROW20' UTILITY EASEMENT24' EMERGENCY ACCESS EASEMENTDRAINAGE EASEMENTSTORM LINE A(SEE SHEET C3.10)STORM LINE E(SEE SHEET C3.12)PRECISION TECHNOLOGY LLC 12/09/2020U200151" = 30'1" = N/APRECISION TECHNOLOGY
NORTH
12/8/2020 2:49:18 PMC:\UNITED CIVIL DROPBOX\PROJECTS\U20015 - PRCS PRECISION TECH II\CADD\CP\C5.00 - DRAINAGE PLAN.DWGC5.00 - DRAINAGE PLAN SME NKS
C5.0024DRAINAGE PLAN030'60'SCALE: 1" = 30'15'PREPARED FOR:JOB NUMBERSHEET NUMBERSHEETSOFDATE SUBMITTED:VERTICAL:HORIZONTAL:SCALEPR
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PROJ. MGR:DRAWING NAME:PATH:DESIGNER:DATE:TIME:
The engineer preparing these plans will not be responsible for, or liable for, unauthorized
changes to or uses of these plans. All changes to the plans must be in writing and must
be approved by the preparer of these plans.
NO.BY DATE
CAUTIONREVISIONS:CIVIL ENGINEERING & CONSULTINGUNITED CIVILDesign Group19 OLD TOWN SQUARE #238FORT COLLINS, CO 80524(970) 530-4044www.unitedcivil.com13X.XXX.XXXX.XXBASIN DESIGNATIONBASIN AREA (ACRE)5 - YR RUNOFF COEFF.100 - YR RUNOFF COEFF.DESIGN POINTFLOW DIRECTIONDPD1LEGEND1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATEUTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BESTINFORMATION AVAILABLE TO THE ENGINEER.2.VEGETATIVE SWALES, BIOSWALES, AND THE BIORETENTION PONDSSHALL BE MAINTAINED BY THE PROPERTY OWNER AND FOLLOWAPPLICABLE STANDARD OPERATING PROCEDURES AS SHOWN INDEVELOPMENT AGREEMENT.3.SEE GRADING PLANS (SHEET C4.00) FOR MORE DETAIL ON PONDAND SITE GRADING.NOTESCHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:APPROVED:DRAINAGE SUMMARYPOND SUMMARYLOW IMPACT DEVELOPMENT TREATMENT SUMMARYBioretention PondLID WQCV REQUIRED3,058 CFLID WQCV PROVIDED3,458 CFBOTTOM OF POND ELEVATION4,908.00LID WQCV WATER SURFACE ELEVATION4,909.00100-YEAR WATER SURFACE ELEVATION4,910.00TOP OF POND ELEVATION4,910.64Proposed BasinsBasinArea%IC2C100Q2Q100(acre)(cfs)(cfs)A10.242%0.250.310.160.71A20.1085%0.851.000.251.04A30.1686%0.861.000.401.62A40.1090%0.951.000.281.01A50.082%0.250.310.050.23A60.5283%0.841.001.155.14A1.10.1090%0.951.000.271.00A1.20.0690%0.951.000.160.58A1.30.4790%0.951.001.264.63A1.40.4590%0.951.001.214.43A1.50.4690%0.951.001.234.53A1.60.5090%0.951.001.344.93A Total3.2480%0.851.005.1621.10B10.5729%0.460.580.522.37B1.10.0890%0.951.000.210.78B1.20.1590%0.951.000.401.47B1.30.1090%0.951.000.281.01B1.40.0690%0.951.000.150.57B1.50.0690%0.951.000.170.63B Total1.0256%0.680.841.746.82C10.1024%0.420.530.120.53D10.1032%0.550.690.140.63E10.092%0.250.310.060.28E20.3077%0.780.980.662.88E Total0.3959%0.660.820.733.17Proposed Total4.8571%0.780.987.9032.32BasinProposedImperviousArea (sf)LID TreatmentArea Treated(sf)% of SiteTreated (%)A1213Bioretention Pond2130%A23,904Bioretention Pond3,9043%A36,117Bioretention Pond6,1174%A43,990Bioretention Pond3,9903%A573Bioretention Pond730%A618,576Bioretention Pond18,57612%A1.13,951Bioretention Pond3,9513%A1.22,276Bioretention Pond2,2762%A1.318,234Bioretention Pond18,23412%A1.417,468Bioretention Pond17,46812%A1.517,868Bioretention Pond17,86812%A1.619,432Bioretention Pond19,43213%A Total112,103Bioretention Pond112,10375%B17,323None00%B1.13,059None00%B1.25,778None00%B1.33,986None00%B1.42,236None00%B1.52,480None00%B Total24,862None00%C11,037None00%D11,800None00%E179None00%E29,880None00%E Total9,959None00%Total Site149,411112,10375%
LOT 2HARMONY TECHNOLOGY PARKFIFTH FILINGLOT 1HARMONY TECHNOLOGY PARKFOURTH FILINGPORTION OF LOT 2HARMONY TECHNOLOGY PARKSECOND FILINGTRACT AHARMONY TECHNOLOGY PARKSIXTH FILINGLOT 1HARMONY TECHNOLOGY PARKFIFTH FILINGPRECISION DRIVE9' UTILITY EASEMENT64' ROW30' UTILITY & DRAINAGE EASEMENT45' UTILITY & DRAINAGEEASEMENTEXISTING STORM SEWERLOT LINELOT LINELOT LINELOT LINEEXISTING STORM SEWEREXISTING BIORETENTION PONDOFFSITE EMERGENCYACCESS EASEMENTEXISTING 24' EMERGENCYACCESS EASEMENTPRECISION TECHNOLOGY LLC 12/09/2020U200151" = 30'1" = N/APRECISION TECHNOLOGY
NORTH
12/9/2020 7:40:25 AMC:\UNITED CIVIL DROPBOX\PROJECTS\U20015 - PRCS PRECISION TECH II\CADD\ET\EC PLANS.DWGEC PLANS SME NKS
EC 13 INITIAL EROSION CONTROL PLAN030'60'SCALE: 1" = 30'15'PREPARED FOR:JOB NUMBERSHEET NUMBERSHEETSOFDATE SUBMITTED:VERTICAL:HORIZONTAL:SCALEPRELIMINARYP
L
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SNOT FOR CONSTRUCTIONPROJ. MGR:DRAWING NAME:PATH:DESIGNER:DATE:TIME:
The engineer preparing these plans will not be responsible for, or liable for, unauthorized
changes to or uses of these plans. All changes to the plans must be in writing and must
be approved by the preparer of these plans.
NO.BY DATE
CAUTIONREVISIONS:CIVIL ENGINEERING & CONSULTINGUNITED CIVILDesign Group19 OLD TOWN SQUARE #238FORT COLLINS, CO 80524(970) 530-4044www.unitedcivil.com1SWALE FLOWLINEWALLINLET PROTECTIONROCK SOCKSEDIMENT CONTROL LOGCONCRETE WASHOUT AREAEROSION CONTROLBLANKETSILT FENCEVEHICLE TRACKINGCONTROLSLOPE PROTECTIONPROPOSED MAJORCONTOURPROPOSED MINORCONTOURPROPOSED BUILDING PADLEGENDNOTES1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATEUTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BESTINFORMATION AVAILABLE TO THE ENGINEER. THE ENGINEER DOESNOT GUARANTEE THE ACCURACY OF SUCH INFORMATION.EXISTING UTILITY MAINS AND SERVICES MAY NOT BE STRAIGHTLINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTORSHALL BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLICAND PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACTUTILITY LOCATIONS.2.THE CONTRACTOR SHALL PROTECT ALL EXISTING FEATURES THATARE NOT TO BE REMOVED ADJACENT TO THE CONSTRUCTIONAREA INCLUDING, BUT NOT LIMITED TO, PAVEMENT, PRIVATEFENCES, ABOVE GROUND OR UNDERGROUND UTILITIES,STRUCTURES, AND UNDERGROUND FOUNDATIONS. THECONTRACTOR SHALL BE RESPONSIBLE FOR ANY DAMAGE THATSHOULD OCCUR TO ANY ON-SITE, OFF-SITE, PUBLIC OR PRIVATEFACILITY OR FEATURE AS A RESULT OF THE CONSTRUCTIONPROCESS FOR THIS PROJECT.3.ALL DISTURBED AREAS NOT PAVED SHALL BE REVEGETATED PERTHE LANDSCAPE PLANS.EROSION CONTROL PRACTICES, SITEPROTECTION, AND REVEGETATION METHODS SHALL FOLLOW CITYREGULATIONS.4.CONTRACTOR SHALL COORDINATE ALL CONSTRUCTION ITEMSIMPACTING ADJACENT PROPERTIES WITH THE PROPERTY OWNERSPRIOR TO BEGINNING ANY CONSTRUCTION ACTIVITIES.CONTRACTOR SHALL NOTE THAT LOTS 1 AND 2 OF HARMONYTECHNOLOGY PARK FIFTH FILING ARE BOTH OWNED BY PRECISIONTECHNOLOGY LLC.5.REFER TO SHEETS C4.10-C4.11 FOR DETAILED GRADING PLANS.6.IN ADDITION TO THE EROSION CONTROL MEASURES SHOWN ONTHIS DRAWING, THE CONTRACTOR SHALL COMPLETE,COORDINATE WITH, AND UPDATE AS REQUIRED, THESTORMWATER MANAGEMENT PLAN (SWMP) FOR THIS PROJECT.7.ANY AREAS USED FOR STOCKPILING AND/OR STAGING SHOULDALSO HAVE SEDIMENT AND EROSION CONTROL MEASURES ASNECESSARY. THESE AREAS SHOULD BE LOCATED AT LEAST 100'AWAY FROM DRAINAGE WAYS. THE SWMP SHOULD BE UPDATEDTO SHOW THESE AREAS AND SEDIMENT AND EROSION CONTROLITEMS. THE ITEMS MAY INCLUDE BUT ARE NOT LIMITED TOVEHICLE TRACKING CONTROL, SILT FENCE, CONSTRUCTIONFENCE, CONCRETE WASHOUT, AND SEDIMENT TRAP.8.SEE LANDSCAPE PLANS FOR ADDITIONAL INFORMATION ONSEEDING/PLANTING, REVEGETATION, EROSION FABRIC/BLANKETS,IRRIGATION, HARDSCAPE AND OTHER TEMPORARY ANDPERMANENT SITE STABILIZATION METHODS.9.STREET SWEEPING SHALL BE PERFORMED AS NEEDED AND/OR ATTHE DIRECTION OF THE CITY ENGINEERING INSPECTOR.10.CONTRACTOR TO TERRACE SLOPES USING A "TRACKED" VEHICLE,RUN PERPENDICULAR TO SLOPE TO INHIBIT RILL/GULLEY EROSION,CONTRACTOR MAY USE OTHER WINDROW-TYPE METHODS ASAPPROVED BY ENGINEER. TYPICAL ALL SLOPES, REPEAT ASNECESSARY UNTIL LANDSCAPING IS INSTALLED.11.REFER TO SHEET C0.02 FOR ADDITIONAL EROSION CONTROLNOTES.EXISTING MAJOR CONTOUREXISTING MINOR CONTOUREXISTING PROPERTY BOUNDARYRIGHT OF WAYCHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:APPROVED:EROSION CONTROL NOTESPROJECT:PRECISION TECHNOLOGYBEST MANAGEMENT PRACTICE ITEM:PRESERVE EXISTING VEGETATIONSILT FENCEVEHICLE TRACKING CONTROLSTAGING AREAS (if applicable)CONSTRUCTION FENCE (if applicable)ROCK SOCKSCONCRETE WASHOUT AREA(if applicable)TEMPORARY SEEDINGINLET PROTECTION (EXIST. & PROP.)1.COLUMNS SHOWN BELOW FOR TEMPORARY EROSION CONTROL ITEMS REPRESENT PHASE OFCONSTRUCTION INCREMENTS, NOT SPECIFIC TIME DURATIONS.2.CONTRACTOR IS RESPONSIBLE FOR REGULAR MAINTENANCE OF ALL BMPs.MOBILIZATIONDEMOLITIONUTILITYINSTALLATIONBUILDINGCONSTRUCTIONSITE GRADING& PAVINGFINAL LANDSCAPING& STABILIZATIONPHASE OF CONSTRUCTIONEROSION CONTROL SEQUENCINGEROSION CONTROL NOTES1.TOTAL DISTURBED AREA = 214,788 SF (4.93 ACRES).2.THE SITE WILL BE LANDSCAPED TO FINAL STABILIZATION. SEE FINALLANDSCAPE PLAN FOR DETAILS.3.REFER TO SHEET C0.02 FOR STANDARD EROSION AND SEDIMENTCONTROL CONSTRUCTION PLAN NOTES.4.EROSION CONTROL PRACTICES, SITE PROTECTION, ANDREVEGETATION METHODS SHALL FOLLOW CITY REGULATIONS.5.ANY AREAS USED FOR STOCKPILING AND/OR STAGING SHOULD ALSOHAVE SEDIMENT AND EROSION CONTROL MEASURES AS NECESSARY.THESE AREAS SHOULD BE LOCATED AT LEAST 100' AWAY FROMDRAINAGE WAYS. THE ITEMS MAY INCLUDE BUT ARE NOT LIMITED TOVEHICLE TRACKING CONTROL, SILT FENCE, CONSTRUCTION FENCE,CONCRETE WASHOUT, AND SEDIMENT TRAP.6.SOIL AMENDMENTS SHALL BE INCORPORATED IN ALL LANDSCAPEAREAS TO A DEPTH OF 6" AT A RATE OF 3 CUBIC YARDS PER 1000SQUARE FEET OF AREA -OR- 4" OF LOOSE TOPSOIL IMPORTED ONTOTHE SITE OVER 4" OF LOOSENED SUBGRADE SOILS. REFER TO CITYOF FORT COLLINS CODE SECTIONS 12-130 THROUGH 12-132.7.TEMPORARY SEEDING SHALL BE UTILIZED IN THE EVENT THAT AGRADED AREA IS EXPOSED LONGER THAN 30 DAYS. THE SITE SHALLBE SEEDED WITH THE APPROPRIATE SEED MIX AND INSTALLATIONMETHOD AS SPECIFIED ON THE APPROVED LANDSACPE PLANS.8.A COMMERCIAL FERTILIZER WITH THE FOLLOWING SPECS SHALL BEUSED:INGREDIENT% AVAILABLEBY WEIGHTAPPLICATIONRATE INLBS/ACRENITROGEN1365POTASSIUM1680POTASSIUMM120
RDRDRDRDRDRDRDRDRDOVFRDGFFE=4916.50LOT 2HARMONY TECHNOLOGY PARKFIFTH FILINGLOT 1HARMONY TECHNOLOGY PARKFOURTH FILINGPORTION OF LOT 2HARMONY TECHNOLOGY PARKSECOND FILINGTRACT AHARMONY TECHNOLOGY PARKSIXTH FILINGLOT 1HARMONY TECHNOLOGY PARKFIFTH FILINGPRECISION DRIVE9' UTILITY EASEMENT64' ROW30' UTILITY & DRAINAGE EASEMENT45' UTILITY & DRAINAGEEASEMENTEXISTING STORM SEWERLOT LINELOT LINELOT LINELOT LINEEXISTING STORM SEWERBIORETENTION POND
DRAINAGE SWALE1.5' SPILL C&G1.5' CATCH C&G1.5' SPILL C&GCURB CUTCURB CUTTRENCH DRAINEXISTING BIORETENTION PONDPROPOSED BUILDIINGFFE = 4916.50EXPOSE FFE AS SHOWN FOR LOADING DOCK(SEE NOTE 5)DRAINAGE EASEMENT24' EMERGENCYACCESS EASEMENT24' EMERGENCY ACCESS EASEMENTDRAINAGE EASEMENTDRAINAGE EASEMENTOFFSITE EMERGENCYACCESS EASEMENTEXISTING 24' EMERGENCYACCESS EASEMENTCURB CUT20' UTILITY EASEMENT24' EMERGENCY ACCESS EASEMENTDRAINAGE EASEMENTCURB CUTPRECISION TECHNOLOGY LLC 12/09/2020U200151" = 30'1" = N/APRECISION TECHNOLOGY
NORTH
12/9/2020 7:40:36 AMC:\UNITED CIVIL DROPBOX\PROJECTS\U20015 - PRCS PRECISION TECH II\CADD\ET\EC PLANS.DWGEC PLANS SME NKS
EC 23INTERIM EROSION CONTROL PLAN030'60'SCALE: 1" = 30'15'PREPARED FOR:JOB NUMBERSHEET NUMBERSHEETSOFDATE SUBMITTED:VERTICAL:HORIZONTAL:SCALEPR
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The engineer preparing these plans will not be responsible for, or liable for, unauthorized
changes to or uses of these plans. All changes to the plans must be in writing and must
be approved by the preparer of these plans.
NO.BY DATE
CAUTIONREVISIONS:CIVIL ENGINEERING & CONSULTINGUNITED CIVILDesign Group19 OLD TOWN SQUARE #238FORT COLLINS, CO 80524(970) 530-4044www.unitedcivil.com2SWALE FLOWLINEWALLINLET PROTECTIONROCK SOCKSEDIMENT CONTROL LOGCONCRETE WASHOUT AREAEROSION CONTROLBLANKETSILT FENCEVEHICLE TRACKINGCONTROLSLOPE PROTECTIONPROPOSED MAJORCONTOURPROPOSED MINORCONTOURPROPOSED BUILDING PADLEGENDNOTES1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATEUTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BESTINFORMATION AVAILABLE TO THE ENGINEER. THE ENGINEER DOESNOT GUARANTEE THE ACCURACY OF SUCH INFORMATION.EXISTING UTILITY MAINS AND SERVICES MAY NOT BE STRAIGHTLINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTORSHALL BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLICAND PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACTUTILITY LOCATIONS.2.THE CONTRACTOR SHALL PROTECT ALL EXISTING FEATURES THATARE NOT TO BE REMOVED ADJACENT TO THE CONSTRUCTIONAREA INCLUDING, BUT NOT LIMITED TO, PAVEMENT, PRIVATEFENCES, ABOVE GROUND OR UNDERGROUND UTILITIES,STRUCTURES, AND UNDERGROUND FOUNDATIONS. THECONTRACTOR SHALL BE RESPONSIBLE FOR ANY DAMAGE THATSHOULD OCCUR TO ANY ON-SITE, OFF-SITE, PUBLIC OR PRIVATEFACILITY OR FEATURE AS A RESULT OF THE CONSTRUCTIONPROCESS FOR THIS PROJECT.3.ALL DISTURBED AREAS NOT PAVED SHALL BE REVEGETATED PERTHE LANDSCAPE PLANS.EROSION CONTROL PRACTICES, SITEPROTECTION, AND REVEGETATION METHODS SHALL FOLLOW CITYREGULATIONS.4.CONTRACTOR SHALL COORDINATE ALL CONSTRUCTION ITEMSIMPACTING ADJACENT PROPERTIES WITH THE PROPERTY OWNERSPRIOR TO BEGINNING ANY CONSTRUCTION ACTIVITIES.CONTRACTOR SHALL NOTE THAT LOTS 1 AND 2 OF HARMONYTECHNOLOGY PARK FIFTH FILING ARE BOTH OWNED BY PRECISIONTECHNOLOGY LLC.5.REFER TO SHEETS C4.10-C4.11 FOR DETAILED GRADING PLANS.6.IN ADDITION TO THE EROSION CONTROL MEASURES SHOWN ONTHIS DRAWING, THE CONTRACTOR SHALL COMPLETE,COORDINATE WITH, AND UPDATE AS REQUIRED, THESTORMWATER MANAGEMENT PLAN (SWMP) FOR THIS PROJECT.7.ANY AREAS USED FOR STOCKPILING AND/OR STAGING SHOULDALSO HAVE SEDIMENT AND EROSION CONTROL MEASURES ASNECESSARY. THESE AREAS SHOULD BE LOCATED AT LEAST 100'AWAY FROM DRAINAGE WAYS. THE SWMP SHOULD BE UPDATEDTO SHOW THESE AREAS AND SEDIMENT AND EROSION CONTROLITEMS. THE ITEMS MAY INCLUDE BUT ARE NOT LIMITED TOVEHICLE TRACKING CONTROL, SILT FENCE, CONSTRUCTIONFENCE, CONCRETE WASHOUT, AND SEDIMENT TRAP.8.SEE LANDSCAPE PLANS FOR ADDITIONAL INFORMATION ONSEEDING/PLANTING, REVEGETATION, EROSION FABRIC/BLANKETS,IRRIGATION, HARDSCAPE AND OTHER TEMPORARY ANDPERMANENT SITE STABILIZATION METHODS.9.STREET SWEEPING SHALL BE PERFORMED AS NEEDED AND/OR ATTHE DIRECTION OF THE CITY ENGINEERING INSPECTOR.10.CONTRACTOR TO TERRACE SLOPES USING A "TRACKED" VEHICLE,RUN PERPENDICULAR TO SLOPE TO INHIBIT RILL/GULLEY EROSION,CONTRACTOR MAY USE OTHER WINDROW-TYPE METHODS ASAPPROVED BY ENGINEER. TYPICAL ALL SLOPES, REPEAT ASNECESSARY UNTIL LANDSCAPING IS INSTALLED.11.REFER TO SHEET C0.02 FOR ADDITIONAL EROSION CONTROLNOTES.EXISTING MAJOR CONTOUREXISTING MINOR CONTOUREXISTING PROPERTY BOUNDARYRIGHT OF WAYCHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:APPROVED:PROJECT:PRECISION TECHNOLOGYBEST MANAGEMENT PRACTICE ITEM:PRESERVE EXISTING VEGETATIONSILT FENCEVEHICLE TRACKING CONTROLSTAGING AREAS (if applicable)CONSTRUCTION FENCE (if applicable)ROCK SOCKSCONCRETE WASHOUT AREA(if applicable)TEMPORARY SEEDINGINLET PROTECTION (EXIST. & PROP.)1.COLUMNS SHOWN BELOW FOR TEMPORARY EROSION CONTROL ITEMS REPRESENT PHASE OFCONSTRUCTION INCREMENTS, NOT SPECIFIC TIME DURATIONS.2.CONTRACTOR IS RESPONSIBLE FOR REGULAR MAINTENANCE OF ALL BMPs.MOBILIZATIONDEMOLITIONUTILITYINSTALLATIONBUILDINGCONSTRUCTIONSITE GRADING& PAVINGFINAL LANDSCAPING& STABILIZATIONPHASE OF CONSTRUCTIONEROSION CONTROL SEQUENCINGEROSION CONTROL NOTES1.TOTAL DISTURBED AREA = 214,788 SF (4.93 ACRES).2.THE SITE WILL BE LANDSCAPED TO FINAL STABILIZATION. SEE FINALLANDSCAPE PLAN FOR DETAILS.3.REFER TO SHEET C0.02 FOR STANDARD EROSION AND SEDIMENTCONTROL CONSTRUCTION PLAN NOTES.4.EROSION CONTROL PRACTICES, SITE PROTECTION, ANDREVEGETATION METHODS SHALL FOLLOW CITY REGULATIONS.5.ANY AREAS USED FOR STOCKPILING AND/OR STAGING SHOULD ALSOHAVE SEDIMENT AND EROSION CONTROL MEASURES AS NECESSARY.THESE AREAS SHOULD BE LOCATED AT LEAST 100' AWAY FROMDRAINAGE WAYS. THE ITEMS MAY INCLUDE BUT ARE NOT LIMITED TOVEHICLE TRACKING CONTROL, SILT FENCE, CONSTRUCTION FENCE,CONCRETE WASHOUT, AND SEDIMENT TRAP.6.SOIL AMENDMENTS SHALL BE INCORPORATED IN ALL LANDSCAPEAREAS TO A DEPTH OF 6" AT A RATE OF 3 CUBIC YARDS PER 1000SQUARE FEET OF AREA -OR- 4" OF LOOSE TOPSOIL IMPORTED ONTOTHE SITE OVER 4" OF LOOSENED SUBGRADE SOILS. REFER TO CITYOF FORT COLLINS CODE SECTIONS 12-130 THROUGH 12-132.7.TEMPORARY SEEDING SHALL BE UTILIZED IN THE EVENT THAT AGRADED AREA IS EXPOSED LONGER THAN 30 DAYS. THE SITE SHALLBE SEEDED WITH THE APPROPRIATE SEED MIX AND INSTALLATIONMETHOD AS SPECIFIED ON THE APPROVED LANDSACPE PLANS.8.A COMMERCIAL FERTILIZER WITH THE FOLLOWING SPECS SHALL BEUSED:INGREDIENT% AVAILABLEBY WEIGHTAPPLICATIONRATE INLBS/ACRENITROGEN1365POTASSIUM1680POTASSIUMM120
RDRDRDRDRDRDRDRDRDOVFRDGFFE=4916.50LOT 2HARMONY TECHNOLOGY PARKFIFTH FILINGLOT 1HARMONY TECHNOLOGY PARKFOURTH FILINGPORTION OF LOT 2HARMONY TECHNOLOGY PARKSECOND FILINGTRACT AHARMONY TECHNOLOGY PARKSIXTH FILINGLOT 1HARMONY TECHNOLOGY PARKFIFTH FILINGPRECISION DRIVE9' UTILITY EASEMENT64' ROW30' UTILITY & DRAINAGE EASEMENT45' UTILITY & DRAINAGEEASEMENTEXISTING STORM SEWERLOT LINELOT LINELOT LINELOT LINEEXISTING STORM SEWERBIORETENTION POND
DRAINAGE SWALE1.5' SPILL C&G1.5' CATCH C&G1.5' SPILL C&GCURB CUTCURB CUTTRENCH DRAINEXISTING BIORETENTION PONDPROPOSED BUILDIINGFFE = 4916.50EXPOSE FFE AS SHOWN FOR LOADING DOCK(SEE NOTE 5)DRAINAGE EASEMENT24' EMERGENCYACCESS EASEMENT24' EMERGENCY ACCESS EASEMENTDRAINAGE EASEMENTDRAINAGE EASEMENTOFFSITE EMERGENCYACCESS EASEMENTEXISTING 24' EMERGENCYACCESS EASEMENTCURB CUT20' UTILITY EASEMENT24' EMERGENCY ACCESS EASEMENTDRAINAGE EASEMENTCRUSHER FINES TRAIL TO CONNECT TO EXISTINGTRAIL AT TIME OF PROJECT CONSTRUCTIONCURB CUTPRECISION TECHNOLOGY LLC 12/09/2020U200151" = 30'1" = N/APRECISION TECHNOLOGY
NORTH
12/9/2020 7:40:48 AMC:\UNITED CIVIL DROPBOX\PROJECTS\U20015 - PRCS PRECISION TECH II\CADD\ET\EC PLANS.DWGEC PLANS SME NKS
EC 33FINAL EROSION CONTROL PLAN030'60'SCALE: 1" = 30'15'PREPARED FOR:JOB NUMBERSHEET NUMBERSHEETSOFDATE SUBMITTED:VERTICAL:HORIZONTAL:SCALEPRELIMINARYPLANSNOT FOR CONSTRUCTIONPROJ. MGR:DRAWING NAME:PATH:DESIGNER:DATE:TIME:
The engineer preparing these plans will not be responsible for, or liable for, unauthorized
changes to or uses of these plans. All changes to the plans must be in writing and must
be approved by the preparer of these plans.
NO.BY DATE
CAUTIONREVISIONS:CIVIL ENGINEERING & CONSULTINGUNITED CIVILDesign Group19 OLD TOWN SQUARE #238FORT COLLINS, CO 80524(970) 530-4044www.unitedcivil.com3SWALE FLOWLINEWALLINLET PROTECTIONROCK SOCKSEDIMENT CONTROL LOGCONCRETE WASHOUT AREAEROSION CONTROLBLANKETSILT FENCEVEHICLE TRACKINGCONTROLSLOPE PROTECTIONPROPOSED MAJORCONTOURPROPOSED MINORCONTOURPROPOSED BUILDING PADLEGENDNOTES1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATEUTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BESTINFORMATION AVAILABLE TO THE ENGINEER. THE ENGINEER DOESNOT GUARANTEE THE ACCURACY OF SUCH INFORMATION.EXISTING UTILITY MAINS AND SERVICES MAY NOT BE STRAIGHTLINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTORSHALL BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLICAND PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACTUTILITY LOCATIONS.2.THE CONTRACTOR SHALL PROTECT ALL EXISTING FEATURES THATARE NOT TO BE REMOVED ADJACENT TO THE CONSTRUCTIONAREA INCLUDING, BUT NOT LIMITED TO, PAVEMENT, PRIVATEFENCES, ABOVE GROUND OR UNDERGROUND UTILITIES,STRUCTURES, AND UNDERGROUND FOUNDATIONS. THECONTRACTOR SHALL BE RESPONSIBLE FOR ANY DAMAGE THATSHOULD OCCUR TO ANY ON-SITE, OFF-SITE, PUBLIC OR PRIVATEFACILITY OR FEATURE AS A RESULT OF THE CONSTRUCTIONPROCESS FOR THIS PROJECT.3.ALL DISTURBED AREAS NOT PAVED SHALL BE REVEGETATED PERTHE LANDSCAPE PLANS.EROSION CONTROL PRACTICES, SITEPROTECTION, AND REVEGETATION METHODS SHALL FOLLOW CITYREGULATIONS.4.CONTRACTOR SHALL COORDINATE ALL CONSTRUCTION ITEMSIMPACTING ADJACENT PROPERTIES WITH THE PROPERTY OWNERSPRIOR TO BEGINNING ANY CONSTRUCTION ACTIVITIES.CONTRACTOR SHALL NOTE THAT LOTS 1 AND 2 OF HARMONYTECHNOLOGY PARK FIFTH FILING ARE BOTH OWNED BY PRECISIONTECHNOLOGY LLC.5.REFER TO SHEETS C4.10-C4.11 FOR DETAILED GRADING PLANS.6.IN ADDITION TO THE EROSION CONTROL MEASURES SHOWN ONTHIS DRAWING, THE CONTRACTOR SHALL COMPLETE,COORDINATE WITH, AND UPDATE AS REQUIRED, THESTORMWATER MANAGEMENT PLAN (SWMP) FOR THIS PROJECT.7.ANY AREAS USED FOR STOCKPILING AND/OR STAGING SHOULDALSO HAVE SEDIMENT AND EROSION CONTROL MEASURES ASNECESSARY. THESE AREAS SHOULD BE LOCATED AT LEAST 100'AWAY FROM DRAINAGE WAYS. THE SWMP SHOULD BE UPDATEDTO SHOW THESE AREAS AND SEDIMENT AND EROSION CONTROLITEMS. THE ITEMS MAY INCLUDE BUT ARE NOT LIMITED TOVEHICLE TRACKING CONTROL, SILT FENCE, CONSTRUCTIONFENCE, CONCRETE WASHOUT, AND SEDIMENT TRAP.8.SEE LANDSCAPE PLANS FOR ADDITIONAL INFORMATION ONSEEDING/PLANTING, REVEGETATION, EROSION FABRIC/BLANKETS,IRRIGATION, HARDSCAPE AND OTHER TEMPORARY ANDPERMANENT SITE STABILIZATION METHODS.9.STREET SWEEPING SHALL BE PERFORMED AS NEEDED AND/OR ATTHE DIRECTION OF THE CITY ENGINEERING INSPECTOR.10.CONTRACTOR TO TERRACE SLOPES USING A "TRACKED" VEHICLE,RUN PERPENDICULAR TO SLOPE TO INHIBIT RILL/GULLEY EROSION,CONTRACTOR MAY USE OTHER WINDROW-TYPE METHODS ASAPPROVED BY ENGINEER. TYPICAL ALL SLOPES, REPEAT ASNECESSARY UNTIL LANDSCAPING IS INSTALLED.11.REFER TO SHEET C0.02 FOR ADDITIONAL EROSION CONTROLNOTES.EXISTING MAJOR CONTOUREXISTING MINOR CONTOUREXISTING PROPERTY BOUNDARYRIGHT OF WAYCHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:APPROVED:PROJECT:PRECISION TECHNOLOGYBEST MANAGEMENT PRACTICE ITEM:PRESERVE EXISTING VEGETATIONSILT FENCEVEHICLE TRACKING CONTROLSTAGING AREAS (if applicable)CONSTRUCTION FENCE (if applicable)ROCK SOCKSCONCRETE WASHOUT AREA(if applicable)TEMPORARY SEEDINGINLET PROTECTION (EXIST. & PROP.)1.COLUMNS SHOWN BELOW FOR TEMPORARY EROSION CONTROL ITEMS REPRESENT PHASE OFCONSTRUCTION INCREMENTS, NOT SPECIFIC TIME DURATIONS.2.CONTRACTOR IS RESPONSIBLE FOR REGULAR MAINTENANCE OF ALL BMPs.MOBILIZATIONDEMOLITIONUTILITYINSTALLATIONBUILDINGCONSTRUCTIONSITE GRADING& PAVINGFINAL LANDSCAPING& STABILIZATIONPHASE OF CONSTRUCTIONEROSION CONTROL SEQUENCINGEROSION CONTROL NOTES1.TOTAL DISTURBED AREA = 214,788 SF (4.93 ACRES).2.THE SITE WILL BE LANDSCAPED TO FINAL STABILIZATION. SEE FINALLANDSCAPE PLAN FOR DETAILS.3.REFER TO SHEET C0.02 FOR STANDARD EROSION AND SEDIMENTCONTROL CONSTRUCTION PLAN NOTES.4.EROSION CONTROL PRACTICES, SITE PROTECTION, ANDREVEGETATION METHODS SHALL FOLLOW CITY REGULATIONS.5.ANY AREAS USED FOR STOCKPILING AND/OR STAGING SHOULD ALSOHAVE SEDIMENT AND EROSION CONTROL MEASURES AS NECESSARY.THESE AREAS SHOULD BE LOCATED AT LEAST 100' AWAY FROMDRAINAGE WAYS. THE ITEMS MAY INCLUDE BUT ARE NOT LIMITED TOVEHICLE TRACKING CONTROL, SILT FENCE, CONSTRUCTION FENCE,CONCRETE WASHOUT, AND SEDIMENT TRAP.6.SOIL AMENDMENTS SHALL BE INCORPORATED IN ALL LANDSCAPEAREAS TO A DEPTH OF 6" AT A RATE OF 3 CUBIC YARDS PER 1000SQUARE FEET OF AREA -OR- 4" OF LOOSE TOPSOIL IMPORTED ONTOTHE SITE OVER 4" OF LOOSENED SUBGRADE SOILS. REFER TO CITYOF FORT COLLINS CODE SECTIONS 12-130 THROUGH 12-132.7.TEMPORARY SEEDING SHALL BE UTILIZED IN THE EVENT THAT AGRADED AREA IS EXPOSED LONGER THAN 30 DAYS. THE SITE SHALLBE SEEDED WITH THE APPROPRIATE SEED MIX AND INSTALLATIONMETHOD AS SPECIFIED ON THE APPROVED LANDSACPE PLANS.8.A COMMERCIAL FERTILIZER WITH THE FOLLOWING SPECS SHALL BEUSED:INGREDIENT% AVAILABLEBY WEIGHTAPPLICATIONRATE INLBS/ACRENITROGEN1365POTASSIUM1680POTASSIUMM120
PRECISION TECHNOLOGY LLC 12/09/2020U200151" = N/A1" = N/APRECISION TECHNOLOGY
12/8/2020 2:50:11 PMC:\UNITED CIVIL DROPBOX\PROJECTS\U20015 - PRCS PRECISION TECH II\CADD\CP\C6.00 - CONSTRUCTION DETAILS.DWGC6.00 - CONSTRUCTION DETAILS SME NKS
C6.0924CONSTRUCTION DETAILS
PREPARED FOR:JOB NUMBERSHEET NUMBERSHEETSOFDATE SUBMITTED:VERTICAL:HORIZONTAL:SCALEPRELIMINARYP
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SNOT FOR CONSTRUCTIONPROJ. MGR:DRAWING NAME:PATH:DESIGNER:DATE:TIME:
The engineer preparing these plans will not be responsible for, or liable for, unauthorized
changes to or uses of these plans. All changes to the plans must be in writing and must
be approved by the preparer of these plans.
NO.BY DATE
CAUTIONREVISIONS:CIVIL ENGINEERING & CONSULTINGUNITED CIVILDesign Group19 OLD TOWN SQUARE #238FORT COLLINS, CO 80524(970) 530-4044www.unitedcivil.com23CHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:APPROVED:APPROVED:DATE:DRAWN BY:12/27/00NBJF
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PRECISION TECHNOLOGY LLC 12/09/2020U200151" = N/A1" = N/APRECISION TECHNOLOGY
12/8/2020 2:50:15 PMC:\UNITED CIVIL DROPBOX\PROJECTS\U20015 - PRCS PRECISION TECH II\CADD\CP\C6.00 - CONSTRUCTION DETAILS.DWGC6.00 - CONSTRUCTION DETAILS SME NKS
C6.1024CONSTRUCTION DETAILS
PREPARED FOR:JOB NUMBERSHEET NUMBERSHEETSOFDATE SUBMITTED:VERTICAL:HORIZONTAL:SCALEPRELIMINARYPLANSNOT FOR CONSTRUCTIONPROJ. MGR:DRAWING NAME:PATH:DESIGNER:DATE:TIME:
The engineer preparing these plans will not be responsible for, or liable for, unauthorized
changes to or uses of these plans. All changes to the plans must be in writing and must
be approved by the preparer of these plans.
NO.BY DATE
CAUTIONREVISIONS:CIVIL ENGINEERING & CONSULTINGUNITED CIVILDesign Group19 OLD TOWN SQUARE #238FORT COLLINS, CO 80524(970) 530-4044www.unitedcivil.com24CHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:CHECKED BY:APPROVED:CWAVEHICLE CONTROL TRACKING PADNOT TO SCALECONCRETE WASHOUT AREANOT TO SCALE1C6.102C6.10VTCSURFACE ROUGHENINGNOT TO SCALE3C6.10DANDY CURB BAGTMOVERFLOWGAPCURB ANDGUTTER INLETCURBFILTERLOW PROFILE WITHGUTTER FOR SAFETYAND CURB APPEALLIFTINGSTRAPSSTORM SEWERGRATE COMPLETELYCOVERED BYHI-FLOW FABRICDANDY BAGVELCROCLOSURELIFT STRAPSUSED FOR EASYMOVEMENT ANDINSPECTION OFUNITSTORMSEWERGRATEDANDY BAGRSTORMSEWERGRATERDANDY CURBTMMANHOLECURB OPENINGWITHOUT GRATECURB FILTEROVERFLOWGAPAGGREGATEPOUCHINLET FILTER DETAILSNOT TO SCALESTABILIZED STAGING AREA DETAILNOT TO SCALECOMBINATION INLET FILTER - DP1TYPE R INLET FILTER - DP2AREA INLET FILTER - DP3NOTES:1.INLET FILTERS SHALL BE DANDY PRODUCTS AS SHOWN OR APPROVED EQUAL. PLAN VIEWREFERS TO DANDY PRODUCTS AS "DP-#" AS DESIGNATED ON THIS DETAIL.4C6.105C6.10
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