HomeMy WebLinkAboutBEEBE CHRISTIAN SCHOOL - PDP - PDP160022 - REPORTS - EROSION CONTROL LETTER/REPORTRidgetop Engineering Job #16-026-001 December 9, 2016
Sediment & Erosion Control Report
for
BeeBe Christian School
2103 Nancy Gray Avenue
Fort Collins, CO 80525
Prepared by: Mike Beach
Date: July 13, 2016
Revised: December 9, 2016
5255 Ronald Reagan Blvd, Suite 210 Johnstown, CO 80534
(303) 322-6480 EMAIL: mbeach@ridgetopeng.com
Ridgetop Engineering Job #16-026-001 December 9, 2016
SEDIMENT & EROSION CONTORL REPORT AND
FOR
2103 NANCY GRAY AVENUE
LOCATED AS
A PORTION OF OUTLOT A, SPRING CREEK NORTH, FORT COLLINS, CO
During the construction process, soil is the most vulnerable to erosion by wind and water. This eroded
soil endangers water resources by reducing water quality, and causing the siltation of aquatic habitat for
fish and other desirable species. Eroded soil also necessitates repair of sewers and ditches, and the
dredging of lakes. In addition, clearing and grading during construction causes the loss of native
vegetation necessary for terrestrial and aquatic habitat, and may be necessary to provide a healthy living
environment for citizens of Fort Collins.
INTENT OF THE STORMWATER MANAGEMENT PLAN (SWMP)
The intent of the Sediment and Erosion Control Report is to minimize water Pollution by providing
guidance on how to protect the storm drain inlet and adjacent detention basin during construction
activities from grading, utility construction, waste materials such as concrete washout, and any
disturbances to dirt/earth. Protect as much existing vegetation as possible, slow down runoff, prevent or
minimize erosion form construction activities, provide incremental phased seeding and mulching,
avoidance and minimization, stabilization, implementation, seeding and scheduling of the plan.
Stabilize earth disturbances; prevent sediment from reaching the receiving or surface waters.
CONTACT INFORMATION AND RESPONSIBLE PARTIES
Prepared by:
Ridgetop Engineering & Consulting, LLC
5255 Ronald Reagan Blvd Suite 210
Johnstown, CO 80534
303.322.6480
Contractor and SWMP Administrator:
Company Name:______________________________________________
Address:________________________________________________________________
Telephone:_________________
Project Manager:_______________________
Emergency SWMP Contact:__________________________
Ridgetop Engineering Job #16-026-001 December 9, 2016
PROJECT SITE DESCRIPTION
The sites address is 2103 Nancy Gray Avenue, Fort Collins, CO; which is described as a portion of
Outlot A, Spring Creek Farms North, City of Fort Collins, County of Larimer, State of Colorado. For
Recording purposes: Part of the Southeast Quarter of Section 19, TP 7 N, R 68 W of the 6th PM.
Located along the north side of Nancy Gray Ave. and east of South Timberline Road, the site is
described as above and contains 3.326 acres of undeveloped vacant land.
This construction project is within the City of Fort Collins, which has a Phase II Municipal Separate
Storm Sewer System Permit from the State of Colorado.
Construction Activity Description:
The intent of the development is to initially construction Temporary Best Management Practices prior to
constructing onsite infrastructure to accommodate a new one-story 30,206 SF building (in two phases).
New underground utilities, pavement, and buildings will be constructed as part of this development.
Overall Sequence:
This project will be constructed in one phase that will include installation of BMP’s, site grading
(including pond preparation), utility installation, building construction, final grading, and final
vegetative cover installed. See a more detailed project sequencing later in this report.
Soil Information:
The existing soil onsite is categorized by the Soil Conservation Service as Nunn Clay Loam. The soil
groups are listed as a Hydrologic Group ‘C’ for both soil types. According to the geotechnical report
prepared by “Soilogic” on June 22, 2016 the site soils consist of light brown to redish/rust lean clay with
varying amounts of silt and sand.
Estimated runoff coefficient for the 2-year event of the soils onsite before construction is 2.444 cfs, and
after future final construction will be 5.80 cfs and 25.76 cfs for the 100-year event.
Receiving Waters:
Stormwater from this site is currently collected by sheet flow and is directed to “Storm 2” conveyance
pipe within S Timberline Dr., where it is conveyed via storm pipe to the Spring Creek (according to
previously prepared storm drainage report for “Interim Timberline Road Widening”, prepared by North
Star Design), which is approximately 0.70 miles north of the site. Spring Creek ultimately drains to the
Cache la Poudre River.
The runoff from the developed site will be conveyed on site via trickle channels and or sheet flow to
onsite water quality and detention facilities. The runoff will be detained for a period of time and
released at the historic release rates into the existing conveyance pipe. Water quality for the site will be
completed with a new Rain Garden and Pervious Pavers prior to the water entering the detention pond.
RECEIVING WATER NAME: SPRING CREEK
DISTANCE FROM PROJECT TO THE RECEIVING WATER OUTFALL IS: APPROXIMATELY 3/4 MILE
WETLAND IMPACTS? YES NO
STREAM IMPACTS? YES NO
THREATENED OR ENDANGERERD SPECIES? YES NO [if yes please list]
Ridgetop Engineering Job #16-026-001 December 9, 2016
Area Information:
The total acreage of disturbance, including all clearing, grading, excavation activities, areas receiving
overburden (e.g. stockpiles), demolition areas and areas with heavy equipment/vehicle traffic and
storage that will disturb existing vegetative cover is approximately 3.61 acres.
Total area (acres) of construction site: 3.33
Total area (acres) of disturbance on-site: 3.33
Total area (acres) of disturbance off-site: 0.28
Total area (acres) of disturbance: 3.61
Total area (acres) of impervious: 1.60
Total area (acres) of permanent landscaping: 1.72
Location and Description of Other Potential Pollution Sources:
Potential Pollutant Sources include sediment, uncovered soil, construction machinery, concrete
washouts, building materials, and fertilizers. It is anticipated that any storage of materials of machinery
will be on site and surrounded by silt fence and/or straw wattles.
Existing Vegetation & Features:
The site slopes to the east/northeast, towards the existing detention pond at an average of 0.5% to 3%.
The existing grasses are well established and have prevented any visible signs of erosion onsite.
The existing site is covered by a well-established mix of native grasses. Existing vegetative cover
density is approximately 50%-70%. (Site visit summer 2016)
There are no areas or features unusually sensitive to erosion on this site.
There are no other non-storm water flows onsite.
No groundwater was observed in the geotechnical investigation and it is not anticipated to be present in
any of the site excavations during construction.
The contractor shall identify on the SWMP permit a qualified SWMP Administrator.
THE STORMWATER MANAGEMENT PLAN
The SWMP will be implemented in three phases: 1) first construction activity, 2) during construction,
and 3) final stabilization.
Site Map Components
During construction items will be added as necessary to render the SWMP current, such as:
1. Areas used for storage of building materials, soils or wastes.
3. Location of work access routes during construction.
4. Location of borrow and waste locations.
FIRST CONSTRUCTION ACTIVITY-BMP’S
Clearing and Grubbing is anticipated to begin near the beginning of February 2017.
Ridgetop Engineering Job #16-026-001 December 9, 2016
Prior to Work Commencing
Sediment control measures will be implemented in accordance with the approved schedule prior to any
construction.
Perimeter control will be established as the first item on the SWMP. Perimeter control BMPs include,
but are not limited to:
Silt Fence – installed around the perimeter of the limits of disturbance, where other BMPs are
not practicable. Silt fence or wattles shall also be incorporated around the base of any soil
stockpile location that will be used for longer term storage of soils.
Inlet Protection – inlet protection of existing and/or proposed inlet locations shall be installed
to the nearest downstream inlet from the project. Inlet protection shall consist of rock socks
and cinder blocks to effectively protect the inlet from sediment laden runoff.
Outlet/culvert Protection – The existing pond outlet shall be protected by placing rock socks
around the front of the outlet. Wrap the rock sock around the back side of the outlet to
eliminate silt from running down the slope.
Rock Socks – Rock Socks shall be installed at all curb flowlines immediately downstream of
and sawcut within the road that exposes soil. As well, rock socks shall be used in conjunction
with other BMPs as listed within this SWMP.
Construction Exit – Install the construction exit on Nancy Gray Avenue and limit all
construction access to this BMP.
BMPs for other pollutants such as concrete truck washout and stockpiles will be identified and
implemented.
The locations of any additional BMPs will be added to the SWMP.
Details of the above BMPs are included either on the Grading Plan, Details Sheets, and/or within this
SWMP.
Offsite Drainage
The project site does have stormwater runoff draining onto from the adjacent property to the west.
Currently there is a street bisecting the subject property and this off-site potential run-on area. This
runoff to the west of the site is conveyed to the existing swale located to the north. The existing
detention facility was sized to accommodate the runoff from this completed project. No sheet flow from
adjacent properties is expected.
If necessary, BMPs will be used to prevent off-site water from running on-site and becoming
contaminated with sediment or other pollutants or to divert off-site flows away from the project site to
prevent water contamination.
Identification of Potential Pollutant Sources:
The following activities and pollutant sources were evaluated:
Disturbed and stored soils;
Vehicle tracking controls;
Management of Contaminated soils;
Ridgetop Engineering Job #16-026-001 December 9, 2016
Loading and unloading operations;
Outdoor Storage activities;
Vehicle and equipment maintenance and fueling;
Dust or particulate generating processes or activities;
Routine maintenance activities;
On site waste management practices
Concrete truck washing;
Dedicated concrete and asphalt batch plants;
Non-industrial waste sources;
Potential spills;
1. Disturbed and stored soils:
a. For this project, no materials are planned to be removed from the site and only limited
material is planned to be stored on site as construction completes. Any disturbed surfaces
will be left in a roughened condition at all times by equipment tracking, scarifying or
disking the surface. Any areas where work will be halted must be temporarily stabilized as
described later in this report.
2. Vehicle Tracking Controls:
a. Site fencing limits the inflow of vehicle’s traveling within the site and area of disturbance,
thus limiting the tracking of soils off site. Placing quarry spall type material (as indicated
on the detail) at the driveway entrance will help alleviate any vehicle tracking of material
off site. If excessive tracking is observed, the contractor will address the tracking on the
adjacent street via scraping and street sweeping if necessary.
3. Management of Contaminated Soils:
a. Per the project specific soils report no contaminated soils are anticipated on the excavation
of subject property. If contaminates are discovered additional BMP’s will be implemented
to ensure containment of any containment until such contaminant can be disposed of
safely and legally.
4. Loading and Unloading Operations:
a. The site fence and limits of disturbance direct the inflow of vehicle’s traveling within the
site. Contractors will be directed to park in designated areas only and driving within the
site will only be on as needed basis. Trucks hauling materials will stay on adjacent streets
as a front- e n d loader unloads/loads trucks from the side extending over the sidewalk.
5. Outdoor Storage Activities:
a. Very few substances will be stored on site regularly, those most common include fuel and
oil used for construction equipment. Other chemicals stored on site will be evaluated on
an as needed basis to determine the best course of action for safe containment in the event
of a spill.
6. Vehicle and Equipment Maintenance and Fueling
a. Vehicle maintenance or fueling on site is not anticipated. Fueling of small construction
equipment (generator, compressor, etc) will be done in an open area with no more than a 5
gallon gas tank. Any fuel or oil spill will be cleaned up and contained immediately to not
allow any contaminants to make it into the storm water or the ground water.
7. Dust and Particulate Generating Processes and Activities
a. Excavation will take place during the winter months, where the ground will either be
frozen and or wet/muddy from the frost melt. Water conditioning the soil is not
anticipated for the initial excavation. If the conditions present themselves where dust
becomes excessive road and soil watering will commence. Contractor must familiarize
themselves with the City of Fort Collins Fugitive Dust Ordinance, No. 044, 2016.
Ridgetop Engineering Job #16-026-001 December 9, 2016
8. Routine Maintenance Activities:
a. Routine maintenance activities will seize once the construction activity begins. The
project site has been routinely been maintained by a landscape maintenance company for
nuisance weeds, etc. Routine maintenance is not going to be implemented until such time
the site is fully stabilized and landscaped.
9. Off-Site Waste Management Practices:
a. All waste produced from construction activities will be handled by a local sanitation
company. A 30 yard dumpster will be stored on the site, near the corner of Joseph Allen
and Nancy Gray. The General Contractor will complete a Construction Waste
Management Plan with further details. No construction waste materials will be buried,
dumped, or discharge into any receiving waters.
10. Concrete Truck Washing:
a. A metal concrete washout container will be located on the project site. The container will
be enclosed in silt fence and regularly maintained. The container will be located more
than 50ft from any storm water inlet.
11. Dedicated Concrete and Asphalt Batch Plants
a. No concrete or asphalt batch plant will be located on site.
12. Non-Industrial Waste Sources:
a. Cleanup of any loose construction trash or debris will be addressed daily. The site and
the surrounding area will be patrolled for waste and disposed of in the proper way as
defined in the Construction Waste Management Plan.
b. Portable sanitary sewage facilities will be placed within the silt fence area and not within
50ft of any storm water inlet. Any portable sanitary sewage facility will be anchored
down to avoid any potential leakage and serviced weekly.
13. Potential Spills
a. Spills and leaks will be immediately handled by the General Contractors employee or
subcontractor in accordance to the EPA’s Spill Control and Countermeasure Plan
(SPCC). The SWMP administrator will be notified immediately of any spill or leak on
site and respond the situation as best defined by the SPCC.
b. Weekly safety meetings will be conducted on site, material handling and spill prevention
will be highlighted throughout these meetings in an effort to prevent and educate
contractors on spill prevention and response.
c. Potential spills risk will be mitigated by not storing containment materials on site regularly.
Details of all BMPs used on this project are included either on the Grading Plan, Detail Sheets
and/or within this SWMP.
DURING CONSTRUCTION-BMP’S
Grading and slope stabilization is anticipated to begin June/July 2017 .
Installation of utilities is anticipated to begin on May 2017 .
Stabilizing Disturbances
1. Disturbed surfaces will be left in a roughened condition at all times by equipment tracking,
scarifying or disking the surface on contour with a 2 to 4 inch minimum variation in soil surface.
2. Disturbed areas where work is temporarily halted will be temporarily stabilized within 14 calendar
days after activity has ceased unless work is to be resumed within 30 calendar days after the activity
ceased as authorized by the City Engineer.
Ridgetop Engineering Job #16-026-001 December 9, 2016
3. During the seasons when seeding does not produce vegetative cover, temporary stabilization will
occur. Temporary stabilization will consist of 1.5 tons certified weed free forage per acre,
mechanically crimped into the soil in combination with an organic mulch tackifier.
4. Construction activities will be limited to those areas within the limits of disturbance as shown on the
plans. Off road staging areas or stockpiles must be pre-approved by the City of Fort Collins. If
necessary, disturbances beyond these limits will be restored to original condition as soon as possible
after construction work is completed.
5. The permittee will tabulate additional disturbances locations and quantities not identified in the
SWMP and add them to the SWMP.
Inspection and Maintenance of Erosion Control Devices
Inspections will be conducted at least every 14 days and after any significant precipitation event where
erosion may have occurred. Replacement of failed BMPs will be conducted immediately, but no later
than 24 hours. Maintenance of erosion control measures will be conducted within 7 days. Sediment
will be cleaned out when silt depth is 50% or greater than the erosion control device, or as directed by
City staff.
Batch Plants
There are no asphalt or concrete batch plants planned for this site.
POST-CONSTRUCTION-BMP’S
Final Stabilization
Permanent Seeding or sod installation is anticipated to begin on August 2017 .
Final stabilization is anticipated to be completed on Sept/Oct 2017 .
Final Stabilization is reached when all ground surface disturbing activities at the site have been
completed, and uniform vegetative cover has been established with an individual plant density of at least
70% of pre-disturbance levels, or equivalent permanent, physical erosion reduction methods have been
employed.
BMPs Installed
The Final Stabilization will consist of monitoring the landscaped slopes and BMPS until the required
germination has taken place. BMPS to remain in place include:
Permanent Seeding and Planting – Establishment of permanent perennial vegetation such as
trees, shrubs, vines, grasses or sod, and/or erosion control blankets on exposed areas for final
stabilization by holding soil particles in place. Once established the potential for erosion is
limited and the vegetation promotes infiltration of the runoff. See EC and Landscape Plans for
locations and additional information.
Preservation of Existing Vegetation – Preserving existing vegetation should occur where no
construction activity will take place. Preserving of existing/natural vegetation is considered a
permanent BMP and contractor shall take measures where possible to keep areas undisturbed.
Ridgetop Engineering Job #16-026-001 December 9, 2016
Soft Pans – Permanent Soft Plans are considered a Low Impact Development BMP and are
typically constructed below final grade and convey water to a desired location. The soft pan
areas allow for additional infiltration into the existing soil stratum. See EC Plans for these
locations.
Rain Garden – Rain Gardens are considered a Low Impact Development BMP and are included
on the EC and Grading Plans for this development. This permanent BMP allows for treatment of
the runoff, reduces potential pollutants, filters, and evapotranspiration. This BMP can also act
as the WQCV and detain the 100-year storm event volume.
Potential Pollutants / Materials Handling and Spill Prevention
Vehicle and equipment fueling will not occur onsite
Vehicle and equipment washing will not occur onsite
Storage of fertilizers, chemicals or other materials will not occur onsite
Haul roads will not be constructed on this site
Location of Cleanup Kits containing absorbent rags, absorbent litter and over-pack drum to store
material in
Any chemicals and/or MSDS products to be labeled appropriately
Loading/unloading areas are limited to the imported structural fill that will help level the
building pad
Trash and construction debris will be collected in temporary construction roll-offs
In accordance with the Record Keeping section below with regard to Spill Response, contractor shall
notify the following:
Non-Hazardous
CDPHE at 1-877-518-5608
Colorado State Patrol 24-hour hotline at 1-303-239-4501
Hazardous Materials
Local emergency response team by dialing 911
CDPHE at 1-877-518-5608
Colorado State Patrol 24-hour hotline at 1-303-239-4501
Seeding Plan
The seeding of bare areas shall be as shown on the SWMP and use the seed mix and rates shown on the
Landscape Plan.
Reseeding operations / corrective stabilization
Areas where seed has not germinated after one season will be evaluated by the City, and if needed the
contractor/owner shall reseed as necessary if required vegetative density is not achieved. Areas that have
not germinated will have seed, mulch and mulch tackifier (or blanket) reapplied as required.
Inspection and Maintenance of Erosion Control Devices
Once construction activity has ceased and landscaping has been completed, but before final stabilization
of the site is accomplished, inspections can be reduced to once a month. Replacement of failed BMPs
will be conducted immediately, but no later than 24 hours after the failure has been identified.
Ridgetop Engineering Job #16-026-001 December 9, 2016
Maintenance of erosion control measures will be conducted within 7 days. Sediment will be cleaned out
when silt depth is 50% or greater than the erosion control device.
Termination of the Construction Permit
BMPs will be removed and the Construction Permit terminated once 70% of preexisting cover has been
established within the disturbed project limits, and a final inspection by City staff has occurred
approving the removal of the temporary BMP’s.
RECORDKEEPING
1. Accurate and complete records will be kept, and maintained for three years after the Site
Development Permit is terminated.
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 BMPs. These
changes will be marked in the plans, dated and signed at time of occurrence.
3. All inspection and maintenance activities or other repairs will be documented and the records
available for review by the City.
4. Records of spill, 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 at 970-221-6700 and the
State of Colorado Spill Hotline at 1-877-518-5608.
2. 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.
CORRECTIVE ACTION LOG
Create as an attachment, a corrective action log. This log should describe repair, replacement, and
maintenance of BMPs undertaken based on the inspections and maintenance procedures, date
completed, and note the person that completed the work. Actions related to the findings of an inspection
should reference the specific report.
This log will also describe changes and updates to the SWMP, including additions of new BMPs,
replacement of failed BMPs, significant changes in the activities or their timing on the project, changes
in personnel, changes in inspection and maintenance procedures, and updates to site maps, etc.
TRAINING
Staff and subcontractors will be trained to identify stormwater BMPs and how to prevent problems with
them, such as not driving onsite unless through the vehicle tracking control or taking care to not to
damage BMPs. Documentation on training at safety meetings or otherwise will be kept on file with the
SWMP, including dates, number of attendees, subjects covered, and length of the training.
Ridgetop Engineering Job #16-026-001 December 9, 2016
FAILURE TO PERFORM
Failure to implement SWMP puts the project in automatic violation of the Construction Permit.
Failure to comply with the Colorado Department of Public Health and Environment Permit requirements
will constitute a violation by the Contractor. Civil penalties for violations can be up to $10,000 per day,
and a criminal pollution of state water is punishable by fines of up to $25,000 per day. For additional
information, review the permit on file or go on-line to the CDPHE web site at
http:www.cdphe.state.co.us/wq/permitsunit/wqcdpmt.html.
APPENDICES
Appendix A Vicinity Map
Appendix B Site Maps
Appendix C Erosion & Sediment Control Escrow
Appendix D Inspection Reports
Appendix E BMP Specifications and Details
Ridgetop Engineering Job #16-026-001 December 9, 2016
Appendix A
Vicinity Map
Ridgetop Engineering Job #16-026-001 December 9, 2016
Appendix B
Site Maps
JOSEPH ALLEN DR.
S. TIMBERLINE RD.
NANCY GRAY AVE.
INITIAL
EROSION
CONTROL PLAN
ER-1.0
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REVISIONS
SHEET TITLE
SHEET INFORMATION
SEAL
DATE
PREPARED FOR
ENGINEERING R IDGE & CONSULTING T OP
CITY COMMENTS 11/28/2016
DRAWN BY:
CHECKED BY:
PROJECT NO.:
ROCHE
CONSTRUCTORS
BEEBE CHRISTIAN
SCHOOL AND
SEVENTH DAY
ADVENTIST CHURCH
361 71ST AVE.
GREELEY , CO
2103 NANCY GRAY AVE.
FORT COLLINS, CO
16-026-001
MRB
BSA/RSB
11
SUBMITTAL
PROJECT
DEVELOPMENT PLAN
10/31/2016
LOGO
SEEDING NOTE:
LEGEND
EROSION CONTROL NOTES
ACREAGE SUMMARY (IN ACRES)
EROSION DETAILS
JOSEPH ALLEN DR.
S. TIMBERLINE RD.
NANCY GRAY AVE.
SCHOOL/CHURCH
INTERIM
EROSION
CONTROL PLAN
ER-1.1
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REVISIONS
SHEET TITLE
SHEET INFORMATION
SEAL
DATE
PREPARED FOR
ENGINEERING R IDGE & CONSULTING T OP
CITY COMMENTS 11/28/2016
DRAWN BY:
CHECKED BY:
PROJECT NO.:
ROCHE
CONSTRUCTORS
BEEBE CHRISTIAN
SCHOOL AND
SEVENTH DAY
ADVENTIST CHURCH
361 71ST AVE.
GREELEY , CO
2103 NANCY GRAY AVE.
FORT COLLINS, CO
16-026-001
MRB
BSA/RSB
11
SUBMITTAL
PROJECT
DEVELOPMENT PLAN
10/31/2016
LOGO
LEGEND
ACREAGE SUMMARY (IN ACRES)
SEEDING NOTE:
EROSION DETAILS
SEE EROSION CONTROL
NOTES ON ER-1.0
JOSEPH ALLEN DR.
S. TIMBERLINE RD.
NANCY GRAY AVE.
SCHOOL/CHURCH
FINAL EROSION
CONTROL PLAN
ER-1.2
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SHEET TITLE
SHEET INFORMATION
SEAL
DATE
PREPARED FOR
ENGINEERING R IDGE & CONSULTING T OP
CITY COMMENTS 11/28/2016
DRAWN BY:
CHECKED BY:
PROJECT NO.:
ROCHE
CONSTRUCTORS
BEEBE CHRISTIAN
SCHOOL AND
SEVENTH DAY
ADVENTIST CHURCH
361 71ST AVE.
GREELEY , CO
2103 NANCY GRAY AVE.
FORT COLLINS, CO
16-026-001
MRB
BSA/RSB
11
SUBMITTAL
PROJECT
DEVELOPMENT PLAN
10/31/2016
LOGO
LEGEND
EROSION DETAILS
ACREAGE SUMMARY (IN ACRES)
SEEDING NOTE:
SEE EROSION CONTROL
NOTES ON ER-1.0
Ridgetop Engineering Job #16-026-001 December 9, 2016
Appendix C
Erosion & Sediment Control Escrow
Disturbed Area = 2.95 ac
SITEWORK Quantity Unit Unit Cost Current OPC
Description:
EROSION CONTROL BMP's
Silt Fence 999 LF $2.00 $1,998
Rock Sock/Gravel Bag/Inlet Protection 16 Each $150.00 $2,400
Vehicle Tracking Control 1 Each $850.00 $850
Concrete Washout 1 Each $1,500.00 $1,500
Sub-total Earthwork $6,748
50% Cont $3,374
Total $10,122
Reseeding
Reseeding/Mulch/Erosion Blanket 1.73 Acre $1,100.00 $1,903
Sub-total Erosion Control $1,903
50% Cont $952
Total $2,855
Final Escrow Amount $10,122
Minimum Escrow = $3,000 for Commercial
1‐Nov‐16
2103 Nancy Gray Avenue
Erosion & Sediment Control Escrow/Security Calculation for the City of Fort Collins
Ridgetop Engineering Job #16-026-001 December 9, 2016
Appendix D
Inspection Reports
Ridgetop Engineering Job #16-026-001 December 9, 2016
Appendix E
BMP Specifications and Details
EROSION
NOTES
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SHEET INFORMATION
SEAL
DATE
PREPARED FOR
ENGINEERING R IDGE & CONSULTING T OP
CITY COMMENTS 11/28/2016
DRAWN BY:
CHECKED BY:
PROJECT NO.:
ROCHE
CONSTRUCTORS
BEEBE CHRISTIAN
SCHOOL AND
SEVENTH DAY
ADVENTIST CHURCH
361 71ST AVE.
GREELEY , CO
2103 NANCY GRAY AVE.
FORT COLLINS, CO
16-026-001
MRB
BSA/RSB
11
SUBMITTAL
PROJECT
DEVELOPMENT PLAN
10/31/2016
LOGO