HomeMy WebLinkAboutSite Certifications - 10/06/2020
Drainage Certification Letter October 1, 2020
Confluence Page 1 of 3
October 1, 2020
Dan Mogen
City of Fort Collins
700 Wood Street
Fort Collins, CO 80522
RE: Permit: B1804579 – Confluence
Fort Collins, Colorado
Dear Mr. Mogen:
This drainage certification letter is provided to verify as-constructed conditions for Confluence.
Northern Engineering completed survey work January 9, 2020, to verify general compliance
with the Final Utility Plans for Confluence Lot 2, dated July 27, 2018, including revised
drawings dated November 1, 2018, by Northern Engineering.
Included in this drainage certification submittal are the following:
Appendix A - City of Fort Collins Overall Site and Drainage Certification Form.
Appendix B - City of Fort Collins During Construction Inspection Checklist and photographs
provided by contractor.
Appendix C - As-constructed sand filter and detention vault calculations.
Appendix D - As-constructed record drawings for Grading and Storm Drain Plan and Profile
Sheets.
Appendix E - Documents provided to the Colorado State Drain Portal website.
Based on the calculations shown in Appendix C, the as-built water quality pond volumes are in
Table 1. The as-built sand filter and detention vault will provide water quality treatment within
the site.
Table 1: Pond Record Volumes
Pond Design Vol. (ft3) As-built Vol. (ft3)
Sand Filter Vault 273 338
Detention Vault 482 575
We have concluded, based on the attached information and personal site inspection, that the
drainage features for the project site have been constructed in substantial compliance with the
above referenced Final Utility Plans, with the following exceptions:
Drainage Certification Letter October 1, 2020
Confluence Page 2 of 3
• Item I.A.2: Water quality and detention for this project is provided by an internal vault with
vertical walls. Proposed and as-built contours will be unreadable on the record drawings.
Instead, the record drawings show as-built depth and elevations of the sand filter and detention
vaults.
• Item I.B.3.b: Detail 206 on Sheet C602 called for a 15” pipe for the emergency overflow, but a
12” pipe was installed. Northern Engineering re-analyzed the overflow with a 12” pipe, and the
12” pipe will provide enough capacity to safely pass the 100-year storm. (See attached exhibit.)
• Item IV.A: In the northwest corner of the project, the contractor installed a 20’ x 47.5’ concrete
pad. A 14” wide valley pan was specified on the approved design drawings surrounded by
landscaping within this area. Runoff from the concrete pad will flow in the intended direction
of the approved design drawings at a slope of 1.5% to 4%.
• Item IV.A.1: In the northwest corner of the project, the contractor installed a 20’ x 47.5’ concrete
pad. A 14” wide valley pan was specified on the approved design drawings surrounded by
landscaping within this area. The drainage within the concrete pad will flow in the intended
direction of the approved design drawings at a slope of 1.5% to 4%.
• Item V.A.2: Along the west edge of the building, behind 316 and 320 Willow Street, the
contractor installed eleven (11) slot inlets with a 1’ wide concrete pan along the building. The
approved design drawings specified a trench drain along the entire length. Finish grades drain
towards the slot inlets. The slot inlets discharge into the building’s internal drainage system
and ultimately into Storm Sewer A per the approved design drawings.
• Item V.A.2: A note on the approved design drawings called for a trench drain along the west
property line between the project and 320 Willow Street. The trench drain was not installed, but
the finish grades along the property line drains towards the slot inlets mentioned above at 1.0%
along the property line.
• Item X.A: The longitudinal grade along the main walkway, located between Confluence and
405 Linden Street, was revised to provide an ADA accessible gate at the entrance. The revised
grades are located on the record drawings.
• Item X.A: The grades along Willow Street were revised by the City of Fort Collins Willow
Street Improvements Project. The grading design for the plaza was not completed by Northern
Engineering, so we cannot speak to the efficacy of the actual design. However, field survey
information and site observations indicate the plaza drains away from the Confluence building
and towards the larger storm drainage system in Willow Street. Northern Engineering does not
assume responsibility for site, grading, and drainage revisions from the City of Fort Collins
Willow Street Improvements Project.
Drainage Certification Letter October 1, 2020
Confluence Page 3 of 3
Please feel free to contact me with any questions you may have.
Northern Engineering Services, Inc.
Frederick S. Wegert, PE
Project Engineer
10/1/2020
Appendix A
Overall Site and Drainage Certification Form
Page 1
OVERALL SITE and DRAINAGE CERTIFICATION
Commercial, Multi-Family and Subdivision Certification Form and Checklist
Project Name:
Date:
Building Permit Numbers:
(Commercial or multi-family)
Per the requirement in Fort Collins Stormwater Criteria Manual (FCSCM) Chapter 3, Section 3.0 to certify as-
built construction to the approved drainage and grading plans, please fill in all applicable items in this
Certification Form for Commercial, Multi-Family and Overall Single Family sites. NOTE: several items must be
verified during construction. A copy of the approved grading plan must be submitted with the as-built grading
plan. (As-built elevations must be written in red next to the approved elevations.)
•Use “Yes” for items completed as described.
•Use “N/A” for items that are not applicable to the site being certified.
•If any blanks are “No,” attach an explanation referencing the item number below.
Attach an explanation or description of the as-built condition for any items listed or for anything not listed but
shown on the approved construction plans.
Provide an as-built redline or Mylar drawing with the following:
I.Water Quality and Quantity Detention Basin - FCSCM Ch. 6 and 7
For multiple detention basins on a site, provide the following for each basin separately:
A. Volume: As-built topographic verification is attached at 1-foot (or less) contour intervals and
volume verification calculations for the water quality capture volume and the 100-year detention storage
volume.
1. Detention basin topography was prepared by a professional land surveyor registered in the state
of Colorado.
2.Both proposed and as-built contours are shown on the same plan sheet (dashed lines for
proposed and solid lines for as-built).
3.All critical spot elevations as shown on the approved construction plans have been verified and
the as-built elevations are shown on the plan sheet.
4.Stage-storage-discharge tables are provided on a separate document.
5.Verification that designed drain time is in compliance with Colorado Revised Statute § 37-92-
602(8) is attached and has been uploaded to the Statewide Compliance Portal
(tinyurl.com/COCompliancePortal) for approval. Uploaded documents must include:
a.The cover sheet from the approved drainage report
b.The stamped certification page from the approved drainage report
c.As-built topographic survey
d.Stamped certification page from the Overall Site & Drainage Certification
e.PDF output from the Stormwater Detention and Infiltration Design Data Speadsheet
11/19
Confluence
October 1, 2020
B1804579
Yes
Yes
No
Yes
Yes
Yes
Page 2
B.Water Quality and Quantity Detention Basin Grading: Attached is as-built verification that there is
a minimum 2% positive fall into the concrete trickle pans or flow-line(s) from all areas in the bottom of
the detention pond. If there is a “soft pan” in the flow-line, all areas still must meet the minimum 2%
grade requirement.
1.Low Flow: Choose one of the following detention basin low flow options as applicable:
a. Turf swale for low flow path in detention basin.
There is a minimum 2% grade in the flow-line(s) of the detention basin. The flattest as-built grade
is .
b.Concrete pan for low flow in detention basin.
There is a concrete pan installed that meets the grades as shown on the approved construction
plans. (Show as-built spot elevations.)
c.Soft pan for low flow in detention basin.
•Verify and document the soft pan material gradation, trench width and depth - to be verified
during construction by engineer. Picture documentation is preferred or engineer’s statement of
visual inspection and compliance. (Choose one below.)
o There is a soft pan with an underdrain installed that meets the design on the approved
construction plans. (Show the underdrain grades, bedding material, geotextile, spot elevations,
bends, cleanouts, etc.)
o There is soft pan installed without an underdrain but there is a type A or B soil. The soil
type must be documented by supplying verification from a registered professional geotechnical
engineer.
NOTE: Spot elevations are to be within 0.2 ft. +/-.
2. Side Slopes: The as-built side slopes of the detention basin have been calculated and are shown.
Indicate the side slope with an arrow and a numerical value (e.g., 6.25:1). The maximum slope allowed
is 4:1. Small areas of 3:1 may be acceptable, but slopes steeper than 3:1 must be stabilized or re-
graded. Provide documentation if a variance was granted for steeper slopes during the design process.
3.Spillway: The following items must be field verified:
a.The location of the spillway is indicated on the as-built plan.
b.The width of the spillway is indicated on the as-built plan.
c.The elevation(s) of the spillway is shown on the as-built plan.
d.A concrete ribbon defines the location and grade of the spillway.
e.There is downstream scour protection in the spillway as per the construction plans. Indicate
type: (riprap size “D50” gradation and bedding type, geotextile, buried
riprap with inches of bury, etc.).
f.There are no obstructions in the spillway, such as trees, bushes, sidewalks, landscape
features, rocks, etc.
11/19
Yes
N/A
N/A
Yes
Yes
N/A
N/A
Yes
No
Yes
N/A
Yes
PVC pipe into storm sewer
Yes
Page 3
4.Outlet Structure:
a.The orifice plate for the approved release rate is installed with the correct size and location of
the orifice.
b.The orifice plate for the water quality outlet is installed with the correct hole size, number of
rows and columns of holes.
c.The bottom hole on both the water quality and quantity outlets are at the bottom of the plate
so no water ponds in front of the plate.
d.The well screen is the correct material and is installed as shown on the construction plans.
e.100-year overflow grate elevation is . (Elev. A on detail D-46)
f.The top elevation of the water quality capture volume is . (Elev. B on detail
D-46)
g.Overflow grate is made of the correct material, has the correct bar spacing, is hinged at the
top and bolted at the bottom.
h.The bottom of the outlet box has no obstructions or misalignments that will cause it to retain
runoff water and is sloped at 2% towards outlet.
II.Channels/Swales - FCSCM Ch. 8, Sec. 2.0 and Ch. 9, Sec. 5.0
A. Capacity: The as-built capacity of all the major channels and swales has been verified. They meet
or exceed capacity requirements shown in the approved drainage study for this project.
1.All swales are located within the drainage easements as shown on the construction plans.
2.Longitudinal slopes and side-slopes (cross-sections) have been verified. Design criteria requires
longitudinal slopes of 2% min. (on vegetated swales) and side-slopes no steeper than 4:1. If these
criteria are not met, the certification engineer will write a justification and propose mitigation for each
instance or have the issues corrected. If variances to these criteria have previously been approved and
are shown on the construction plans, no justification is needed.
3.As-built spot elevations on channels/swales are shown that correspond to spot elevations
shown on the approved construction plans.
4.All permanent erosion control measures are installed as shown on the approved construction
plans (e.g., drop structures, riprap, TRMs, etc.). (Include pictures and verification of the materials used
as part of this verification.)
5.All pans, curbs, storm pipes or other appurtenances appropriately tie into each other in the
system. (Pictures at tie-in points suggested.)
6.The minimum freeboard is provided for all channels and swales as shown on the approved
construction plans or as identified in the approved drainage study. (Show the freeboard provided on
the cross-sections as on the construction plan set or attached as separate documentation.)
7.The low flow portion of all channels or swales is clear of obstructions. (No landscaping, trees,
shrubs, sod, etc. infringe on the low flow portion of channels or swales.)
11/19
Yes
Yes
Yes
N/A
Yes 4966.71
Yes 4966.39
N/A
Yes
Yes
N/A
N/A
Yes
N/A
Yes
Yes
Yes
Page 4
III.Storm Pipes (aka storm drains) - FCSCM Ch. 9, Sec. 4.0
A. Storm Drain Pipe Capacity: The as-built capacity of all pipes installed on this project has been
verified and meets or exceeds the capacity requirements shown in the approved drainage study for this
project.
1.All storm drain pipe sizes and materials have been verified and are in conformance with the
approved construction plans. (Indicate on the plan and profile sheets that they have been verified.)
Material and size substitutions must be approved prior to installation. If a pipe size or material was
changed during construction, the certification engineer must attach the approval documents or supply
them with this certification. Approval documents must include a calculation documenting the capacity
equivalency (equal or greater) of the substituted size.
2.The longitudinal slope of the pipe is as shown on the approved construction plans. The
acceptable minimum slope is 0.4%. All slopes flatter than the designed slope on the construction plans
must be justified with capacity calculations on an attached sheet.
3.The as-built invert elevations have been verified and are shown on the plan and profile sheets of
the approved construction plans.
B.Storm Drain Pipe Installation Requirements: All pipes are installed in accordance with the
approved construction plans and construction specifications.
1.The minimum cover requirements for all pipes have been met as shown on the approved
construction plans. These will be called out in critical locations.
2.All encasements and clearances as specified on the approved construction plans have been met.
3.Any specific joint types or construction methods specified on the approved construction plans
have been met. (List on a separate sheet and attach to this certification.)
IV.Concrete Pans - FCSCM Ch. 8, Sec. 2.0
A. Construction/Installation: All concrete pans have been constructed in accordance with the
approved construction plans.
1.The concrete pans are the correct size/width as shown on the approved construction plans.
2.The longitudinal slopes of the pans are as shown on the approved construction plans. The
certification engineer must justify or mitigate longitudinal slopes less than the minimum of 0.4% unless
a flatter slope was approved and is shown on the approved construction plans. Provide mitigation or
justification by separate document.
3.The cross-section of the pan is as shown on the construction plans. (Specifically, the pan cross-
section is “V” shaped and meets the side slope shown on the detail.)
4.The concrete pans are a minimum of 6 inches thick without reinforcement and a minimum of 4
inches thick with a minimum of 6X6-W14xW14 reinforcement per detail D20B and D20C. (Provide
documentation of the reinforcement used if different than shown on the details or on the approved
construction plans.)
5.The spot elevations shown on the concrete pan(s) have been verified and are shown on the as-
built drawings.
11/19
Yes
Yes
Yes
Yes
Yes
Yes
Yes
N/A
No
No
Yes
Yes
Yes
Yes
Page 5
V. Storm Drain Inlets - FCSCM Ch. 9, Sec. 3.0
A. Construction/Installation: All storm drain inlets have been constructed in accordance with the
approved construction plans and construction specifications.
1.The size and type of inlets are consistent with the inlets shown on the approved construction
plan. Indicate by writing “Verified” on each inlet on the plan sheet or list on a separate document the
inlet number(s), type and size (length). If the inlet installed is other than the one on the approved
construction plan detail sheet, provide the name and source of the detail with justification for equal or
better capacity.
2.The size of the inlet opening is consistent with the approved detail. (Check height and width.)
3.The elevation of the grate (if applicable) is at the elevation shown on the street profile or as
indicated by a spot elevation on the construction plans.
4.The as-built invert elevations of all pipes entering and leaving the inlet are shown on the plan
and profile sheets within construction tolerance of 0.2 feet. If substantially different, provide
justification and capacity calculations to show the capacity is not affected or propose mitigation.
5.The as-built size of the inlet box is as shown on the construction plans or an explanation or
justification is attached.
6.All Type C, R, 13 and 16 inlet covers are stenciled or stamped with the following designation (or
an equivalent): NO DUMPING – DRAINS TO POUDRE RIVER.
VI.Culverts - FCSCM Ch. 9, Sec. 4.0
A. Construction/Installation: All culverts have been constructed and/or installed in accordance with
the approved construction plans and construction specifications.
1.All culvert sizes have been verified as indicated on the as-built construction plans as correct.
2.The culvert material type for all culverts installed is as on the approved construction plans and is
indicated on the as-built plans.
3.The as-built invert “in and out” elevations have been verified and are indicated on the as-built
construction plans.
4.The culvert headwalls or wing walls have been installed as shown on the approved construction
plans. Headwalls or wing walls may be needed in the as-built conditions onsite if the slopes adjacent to
the culvert are greater than 4:1. Please note areas needing stabilization in the certification narrative.
An alternative to consider is a turf reinforcement mat (TRM).
VII.Sub-Drains
A. Construction/Installation: All sub-drains shown on the construction plans have been installed in
accordance with those plans and the construction specifications. Sub-drains installed with the sanitary
sewer are to be verified on the sanitary sewer plan and profile sheets of the construction plans. (NOTE:
Indicate any sub-drains installed after the plans were approved on the as-built plans.)
1.The size of the sub-drains are as approved on the construction plans and are indicated on the as-
built plans.
2.The type of sub-drain, in particular the perforated and non-perforated sections of the drain, are
as indicated on the approved construction plans.
11/19
Yes
Yes
No
Yes
Yes
Yes
Yes
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Page 6
3.The cover requirements per the construction plans are provided.
4.The cleanouts have been installed at the locations shown on the construction plans and are
accessible for cleaning. (Cleanouts can be buried a maximum of 6 inches deep with their locations
marked.)
5.The backfill materials for sub-drains are as shown on the approved construction plans. (This
includes the type, depth and width.)
6.The geo-textile liner completely wraps the sub-drain and the permeable backfill material unless
shown otherwise on the approved construction plans. (Sub-drain pipe wrapped in a sock filter material
is accepted only if approved prior to installation.)
VIII.Curb Cuts
A. Construction: All curb cut openings are constructed in accordance with the approved construction
plans and construction specifications.
1.The size (width) of the curb cut opening is as shown on the approved construction plans.
2.The curb cut openings tie into a downstream swale, pipe, or other appurtenances with a smooth
transition and there no obstructions such as riprap or sod impeding the flow downstream of the curb
cut.
IX.Sidewalk Culverts & Chases
A. Construction/Installation: All sidewalk culverts have been installed at the locations shown on the
approved construction plans.
1.The size (width and length) of the culverts are as shown on the approved construction plans.
2.The cover plate is a minimum 5/8-inch galvanized plate bolted to a galvanized angle iron per the
detail shown on the approved construction plans or per the City’s detail.
3.The sidewalk culvert invert “in and out” elevations have been verified and are indicated on the
as-built plans.
4.The sidewalk culvert opening is as shown on the approved construction plans or per the City’s
detail.
5.There is a smooth transition both on the inlet and outlet ends of the sidewalk culvert with no
obstructions such as riprap or sod impeding the flow into or out of the sidewalk culvert.
X. Site Grading - FCSCM Ch. 8
A. Construction: All common open spaces have been graded in accordance with the approved
construction plans.
1.The grading on all common open spaces bordering private lots has been verified as correct and
the as-built rear lot corner elevations have been shown on the as-built plans.
11/19
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Page 7
2.The as-built contours for “overlot grading” are shown on the as-built construction plans for all
common open spaces, tracts, outlots, etc. If not in compliance, please attach a narrative describing the
situation for noncompliance and when it may be corrected. An escrow for overlot grading may be
required. (NOTE: Residential Lot Grading Certification is a separate process from this Overall Site
Certification. It is understood that residential lots will be brought to final grade once the foundation is
backfilled so they may be lower than the plan shows at this Overall Site Certification stage.)
3.All turf reinforcement mats (TRMs) have been installed as shown on the approved construction
plans and the slopes are stabilized.
XI.Permanent Erosion Control BMPs - FCSCM Ch. 9, Sec. 7.0
A. Construction: All permanent erosion control BMPs have been installed per the approved
construction plans.
1.All riprap has been installed in the locations and sizes indicated on the approved construction
plans.
2.All fabric has been installed in the locations and sizes indicated on the approved construction
plans.
a.All fabric was installed per the details on the approved construction plans.
XII.Post-Construction Site Cleanup - FCSCM Ch. 3, Sec. 2.0
A. Construction: All construction debris and obstructions of any kind have been removed from
drainage paths.
1.All construction debris has been removed except in staging area(s).
2.All ruts have been smoothed out in all construction areas.
3.All areas needing reseeding have been identified and future stabilization goals have been
coordinated with the Erosion Control Inspector and in accordance with FCSCM Vol.2 Chapter 12. Note
the area needing stabilization in the narrative.
XIII.Certification of LID and Water Quality Facilities - FCSCM Ch. 7
A.Attached are the During Construction Inspection Checklist for Low Impact Development (LID) and
other items to be verified during construction, along with pictures and other required documentation.
B.Attached is verification of the rain garden and/or sand filter flat surface area(s) and ponding
volume(s). This verification includes survey of critical elevations.
C.Attached is verification of the underground infiltration required volume(s), weir elevations,
orifices, inspection ports and filtering fabric. This verification includes survey of critical elevations.
D.All visible LID design features were verified as part of the engineer's site visit.
11/19
No
N/A
Yes
N/A
N/A
N/A
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
2/14/17 Page 1
CERTIFICATION OF LOT GRADING
Pursuant to Fort Collins City Code § 26-544 & City Land Use Code § 3.3.2 (e)
Date:
Address:
Lot: Block:
Subdivision:
Permit Application #:
Larimer County Parcel #:
Larimer County Reception #:
(on development agreement)
I, (print) , a Colorado registered professional engineer, verify that construction
of all stormwater facilities and grading is complete and hereby submit this certification.
Please answer the following questions by initialing the appropriate response. For each question initialed “No,” attach an
explanation detailing how this will affect stormwater drainage for this lot and any adjacent lots.
1.Certification includes attached Stormwater-approved grading plan. (NOTE: City’s
Building Department does not approve grading plans).
2.Certification includes the attached as-built survey dated (must be within 60
days of the date the certification is submitted) accurately and truthfully depicting
elevations for:
Top of foundation/finished floor
Finished grade on each side of the structure
Quarter points along each lot line (not more than 50 feet apart)
Break points/high points
Swales
Berms
Retaining walls
Air conditioning pads
Window wells
Any other appurtenance(s) within an easement
3.All elevations are within a 0.2 foot tolerance of the approved grading plan.
4.The top of foundation is at least 6 inches above the highest grade surrounding the
structure.
5.There is a minimum grade of 5% away from the structure within the first 5 to 10 feet
adjacent to the residence.
6.All slopes meet or exceed the minimum requirement of 2% (1% is acceptable on single
family lots when the swale is draining the runoff from only two adjoining properties)
and are not steeper than 33% (3:1).
7.All flow lines of stormwater drainage swales are a minimum of 6 inches below the
elevation of ground adjacent to the structure and will direct drainage as shown on the
Stormwater-approved grading plan.
8.All downspout locations and discharge directions are shown on the as-built survey.
Runoff is directed into an appropriate drainage system or lot line swale, and it is not
directed onto neighboring properties.
No Yes
No Yes
No Yes
No Yes
No Yes
No Yes
No Yes
No Yes
September 24, 2020 Confluence
401 Linden Street B1804579
Fort Collins, Colorado 80524 9712240201, 9712240322, 9712240000
2
Frederick S. Wegert
7/30/2020
FSW
There is only 3" between the building and the property line. The grades around the outsideparameter of the building are per the approved design drawings unless noted within the Site,Grading, and Drainage Certification.
The buildings parameter is concrete with some small landscaped areas. The gradesaround the outside parameter of the building are per the approved design drawingsunless noted within the Site, Grading, and Drainage Certification.
The building's roof drainage system is collected into a single system, passed throughsand filter and detention vaults, and discharged into the City's storm sewer system.
FSW
FSW
FSW
FSW
FSW
FSW
FSW
Drainage Certification Letter August 14, 2020
Confluence Page 5 of 3
Appendix B
During Construction Inspection Checklist
1/19 Page 1 of 2
DURING CONSTRUCTION INSPECTION CHECKLIST
To be completed by Construction Superintendent
This checklist is to be completed during construction and included with the Overall Site and Drainage Certification.
Use “Yes” for items completed as described.
Use “N/A” for items that are not applicable to the site being certified.
If any blanks are “No,” attach an explanation referencing the item number below.
Project Name: Confluence Date: 07/29/2020
Building Permit Numbers: B1804579
I. Compaction
A.Yes All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the
City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content
and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction.
Provide testing log from contractor/engineer.
II. Storm Drain Pipe Installation Requirements
A.Yes The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction
Standards for Water, Wastewater, Stormwater (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas
are to be at 90%, both in accordance with ASTM D698).
III.Energy Dissipation and Erosion Protection - FCSCM Chapter 9, Section 7.0
A.Riprap
1. N/A The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans.
2. Yes A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an
approved equal. Provide documentation for an approved equal.
3. N/A The riprap is the gradation shown on the approved construction plans with a D50 of .
4. N/A The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown.
5. N/A The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.)
B. Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7
1. Yes All fabric was installed per manufacturer’s specifications.
1/19 Page 2 of 2
IV. Other Permanent BMPs
A.N/A All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch
crossings of storm drain pipes.)
V.Extended Detention Basins
A.Yes Installation of this facility was verified via inspection by a City-Stormwater Inspector at the point of installation of the water quality
control box(es). Provide date of inspection and name of inspector: Martha Cruse 7/24/2020
Included certification sheet(s):
Please check the appropriate box(es) for the Low Impact Development
(LID) facilities found on this site and complete the corresponding
certification sheets.
☐ Permeable Interlocking Concrete Pavers
☐ Bioretention Cells (Rain Gardens)
☒ Sand Filters
☐ Vegetated Buffers
☐ Underground Infiltration
☐ Other LID – For certification of Dry Wells, Tree Filters,
Constructed Wetland Channels & Ponds, etc., contact City Staff
to determine requirements to exhibit the LID facility has been
constructed and functions as intended per the approved
drainage report.
*Please provide photographic documentation of the installation of all
stages of all LID facilities.
**Please contact the City Stormwater Inspector at
stormwaterinspection@fcgov.com to discuss inspection requirements
for each LID facility and request inspections.
***All facilities being certified must be “clean” – free of sediment &
construction debris – prior to certification or acceptance of the facility.
Completed by:
Name: Cory Surbrugg
Title: Project Engineer
Email: c.surbrugg@saundersheath.com
Phone: 970-685-26003
Company: Saunders Heath
Address: 1212 Riverside
Fort CCollins, CO 80524
1/19 Page 1 of 3
Sand Filters
Item/Activity Yes No N/A Submittal Requirements Submitted?/Response
Stormwater Inspection
Pre-construction meeting was held with City-Stormwater
Inspector to discuss installation, inspection, checklist, and
protection from sedimentation
☐☐☒
Record date, inspector name, meeting
location (i.e. DCP, initial erosion control
inspection, etc.)
Underdrain and basecourse inspection(s): Installation of this
facility was verified via inspection by a City-Stormwater
Inspector at the point of installation of the outlet, underdrain,
geomembrane layer, and base course (per design in Final Plan
Documents)
☒☐☐
Record date(s) of inspection and
inspector’s name
Pea gravel and filter media inspection(s): Installation of this
facility was verified via inspection by a City-Stormwater
Inspector at the point of installation of the pea gravel and filter
media
☒☐☐
Record date(s) of inspection and
inspector’s name
Excavation
Heavy equipment did not encroach into the excavated area
(prevents over-compaction)☒☐☐
Bottom of cell was “ripped” after excavation ☐☐☒Provide photographs before and after
“ripping”
Bottom surface of cell is flat and level ☒☐☐Provide photograph
Excavated area is protected/surrounded by sediment/runoff
control measures during construction ☒☐☐Provide photograph
Intake
Upstream catchment drains to inlet/sand filter per plan and
flows are fully captured ☒☐☐
Forebay (If Applicable)
Forebay is installed according to design specifications ☐☐☒Provide photograph
There is a minimum 3” drop at the forebay entrance ☐☐☒Provide photograph
Forebay will drain fully and not hold standing water ☐☐☒
Outlet Structure/Overflow
Overflow inlet elevation is set above sand filter media per plan
(typically 1 to 3 feet)☒☐☐Provide photograph
Overflow inlet invert elevation is at least 3 inches below
containment wall/berm (to direct overflow into inlet)☒☐☐
Measure and record distance between
inlet and top of containment wall/berm;
provide photograph
1/19 Page 2 of 3
Overflow path and check dams, if used, are armored to protect
from erosion and maintain elevations ☒☐☐Provide photograph
Impermeable Liner (If Applicable)
Impermeable liner meets design specifications ☐☐☒Provide specifications of delivered
material
Impermeable liner is appropriately anchored to the perimeter
wall ☐☐☒Provide photograph
Impermeable liner is buried with no exposure ☐☐☒
Any penetrations of the impermeable liner have been sealed
and checked for water-tightness ☐☐☒Provide photograph (if necessary)
Underdrain System
Underdrain pipe meets design specifications ☒☐☐Provide photograph
At least one cleanout is provided per underdrain lateral ☒☐☐Provide photograph
Cleanout pipe is solid (not perforated/slotted)☒☐☐Provide photograph
Cleanout covers are installed and watertight ☒☐☐Provide photograph
Verify the underdrain is NOT wrapped in geotextile fabric ☒☐☐Provide photograph
Verify there is no orifice plate on the underdrain outfall ☒☐☐Provide photograph
Underdrain integrity tested after backfilling using TV and/or
water test ☐☒☒Provide documentation of test results
Filter Media
Filter media composition (e.g. ASTM C 33 Sand):
- meets design specifications
- is installed to the required design depth
☒☐☐
Provide load ticket, photographs, and
record depth installed
Pea gravel layer:
- meets design specifications
- is installed to the required design depth
☒☐☐
Provide load ticket, photographs, and
record depth installed
Filter Media is installed flat and level ☒☐☐
Other Structural Components
Containment wall/berm is continuous and level ☒☐☐
Landscaping
Verify final landscaping is free of sod ☐☐☒ If sod is used, it must be shown to be
“sand-grown”
Final landscaping (non-floatable mulch) is flat and level ☐☐☒Provide photograph
Vegetation is planted according to landscape design
specifications and final landscaping plan ☐☐☒Provide photograph
Verify that weed barrier is NOT installed ☐☐☒
1/19 Page 3 of 3
Temporary irrigation installed
☐☐☒
If N/A, then verify that permanent
irrigation is installed to establish/maintain
vegetation
Close Out
Upstream catchment stabilized prior to diverting runoff into
sand filter cell ☒☐☐
Drainage Certification Letter August 14, 2020
Confluence Page 6 of 3
Appendix C
Water Quality Capture Volume
Project Number:Project:
Project Location:
Calculations By:Date:
Width:6.6 ft Width:4.7 ft
Length:20.6 ft Length:43.6 ft
Area:136 ft2 Area:203 ft2
Bottom Elev.:62.48 Bottom Elev.:64.72
Overflow Inv.:66.71 Overflow Inv.:66.39
Height to Overflow (SW):4.2 ft Height to Overflow (SW):1.7 ft
Overall Inside Height:5.5 ft Overall Inside Height:5.6 ft
Volume:575 ft3 Volume:338 ft3
F. Wegert 7/30/2020
Detention Vault Volume Sand Filter Vault Volume
Detention Pond & Sand Filter Vault Calculations
998-003 Confluence
Fort Collins
Channel Report
Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Friday, Sep 11 2020
100-Year Storm from Basin 1 for 12-in Overflow
Circular
Diameter (ft)= 1.00
Invert Elev (ft)= 1000.00
Slope (%)= 0.80
N-Value = 0.012
Calculations
Compute by:Known Q
Known Q (cfs)= 2.34
Highlighted
Depth (ft)= 0.61
Q (cfs)= 2.340
Area (sqft)= 0.50
Velocity (ft/s)= 4.65
W etted Perim (ft)= 1.79
Crit Depth, Yc (ft)= 0.66
Top W idth (ft)= 0.97
EGL (ft)= 0.95
0 1 2 3
Elev (ft)Depth (ft)Section
999.50 -0.50
1000.00 0.00
1000.50 0.50
1001.00 1.00
1001.50 1.50
1002.00 2.00
Reach (ft)
Drainage Certification Letter August 14, 2020
Confluence Page 7 of 3
Appendix D
Record Drawings
E
AC
S
S
D
S
D
D
S
VAULT
ELEC
CS
VAULT
CABLE
CONTROL
IRR
CONTROL
IRR
CONTROL
IRR
CS
CO
N
T
R
O
L
IRR
CO
N
T
R
O
L
IRR
CO
N
T
R
O
L
IRR
CO
N
T
R
O
L
IRR
CO
N
T
R
O
L
IRR
CON
T
R
O
L
IRR
CO
N
T
R
O
L
IR
R
CO
N
T
R
O
L
IRR
VAU
L
T
ELE
C
VAU
L
T
ELE
C
CS
T
FOFOFOFOFOFO
T
T
T
T
T
T
T
T
T
T
T
T
T T T
FO
FO FO
FO
FO FO
FO FO
FO
FO
FO
FO
FO
FO
FO FO FO FO FO FO FO FO FO FO FO FO FO
T
T
T
T
T
T
T
T
T
T
TTTTTTTTTTTT
T
T
TTT
T
T
T
T
T
T
X
X
STST
W W W
W
W
W
W
W
W
W
W
W
W
W
W
W
W W W W
W
W
W
W
W
W
W W W W W W W W
W
W
W
WWWW
W
W
W
W
W
W
W
W
W
W W W W W W W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
WWWWWW
X
X
XX
X
X
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST
SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS
CA
B
L
E
TE
L
E
VAULT
CABLE
VAULT
ELEC
W
W
W
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CTV
CTV
CTV
CTV
CTV
CTV
CTV
CTV
CTV
CTV CTV CTV CTV
CTV CTV CTV CTV CTV
CTV
CTV
CTV
CTV
CTV
CTV
CT
V
CT
V
CTV CTV CTV CTV CTV CTV CTV CTV CTV CTV CTV CTV
CTV
CTV
CTV
CT
V
CTV CTV CTV
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E E E E E E E E E E E E E E E E E
E
E
E
E
E
E
E E E E
E E E E E E E E E
E
E
E
E
E E E E E E
E E E E E E E E E E E E E
E E E E E E E E E
E EE
EEEEEEE
G G G G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G G G G G G G G G G G G
IRR
X
X
X
X
X
X
XXXX
X
X
X
X
M
X
EX. SIDEWALK
LINDEN STREET
(100' ROW)
EX. SIDEWALKEX. SIDEWALK
EXISTING DECK
409 LINDEN STREET
405 LINDEN STREETPROPOSED BUILDING
PROPOSED BUILDING
3'
MIN.
46
.
3
L
F
6
"
P
V
C
S
A
N
I
T
A
R
Y
SE
W
E
R
S
E
R
V
I
C
E
A
T
4
.
0
%
46
.
3
L
F
6
"
P
V
C
S
A
N
I
T
A
R
Y
SE
W
E
R
S
E
R
V
I
C
E
A
T
4
.
0
%
EX. 12" C900 PVC WATER MAIN
EX. 12" C900 PVC WATER MAIN
EX. 8" PVC SANITARY SEWER @ 0.40%
EX. 36" RCP STORM SEWER @ 1.89%
EX
.
6
"
D
I
P
W
A
T
E
R
M
A
I
N
RELOCATE EXISTING
CABLE TELEVISION
PROPOSE GAS SERVICES. SEE
MEP PLANS FOR CONTINUATION.
RELOCATED
FIRE HYDRANT
PROPOSED 8" FIRE SERVICE.
SEE PLUMBING PLANS FOR
CONTINUATION.
PRESERVE & PROTECT EXISTING
TREE (TRUNK LOCATED ON
NEIGHBORS PROPERTY)EX. PROPERTY LINE
EX. RIGHT-OF-WAY
EX. RIGHT-OF-WAY
EX. PROPERTY LINE
EX. PROPERTY LINE
EX. SANITARY SEWER MH
RIM: 4971.86
INV IN: 4956.76 (NW)
INV IN: 4958.03 (NE)
INV IN: 4958.06 (SW)
INV OUT: 4956.68 (SE)
EX. SAN. SEWER MH
RIM: 4968.40
INV IN: 4959.06 (NE)
INV OUT: 4959.01 (SW)
EX. PROPERTY LINE
EX. RIGHT-OF-WAY
EX. PROPERTY LINE
EX. PROPERTY LINE
EX. RIGHT-OF-WAY
CONNECT TO EXISTING GAS
MAIN PER UTILITY COMPANY'S
STANDARDS & REGULATIONS
CONNECT TO EXISTING STORM
SEWER WITH PROPOSED
MANHOLE (SEE SHEET C402)
CONNECT ELECTRIC SERVICE TO
BUILDING SERVICE AT EXISTING
ELECTRIC METER (RE: MEP)
1
2
3
PROPOSED
NYLOPLAST INLET
1 4
3
PRESERVE & PROTECT EX.
WATER METER & CURB STOP
2
1
CONNECT INTO EXISTING 12" WATER
MAIN WITH 12"x6" SWIVEL TEE,
THRUST BLOCK, AND 6" GATE VALVE.
CONNECT TO EXISTING SANITARY
SEWER WITH 8"x6" TEE AT INVERT
ELEVATION 4959.21.CONNECT TO EXISTING SANITARY
SEWER WITH 8"x6" TEE AT INVERT
ELEVATION 4959.22.
PROPOSED
STORM SEWER
1
4
PROPOSED AREA INLET
(SEE SHEET C402)
PROPOSE ELECTRIC SERVICE. SEE
MEP PLANS FOR CONTINUATION.
EXISTING CABLE TELEVISION
PEDESTAL TO BE REMOVED
AND RESPLICED INTO A VAULT
REMOVE & REPLACE EXISTING
AIR CONDITIONING UNIT FOR
REGRADING IN THIS AREA
5
5
RELOCATE BANK OF IRRIGATION VAULTS, CONTROLS,
& WATER METER. CONTRACTOR TO COORDINATE
WITH CITY OF FORT COLLINS REGARDING LOCATION,
DETAILS, AND SPECIFICATIONS.
PROPOSED 18.3 LF OF 6" PVC COMMERCIAL
SANITARY SEWER SERVICE AT 1.0% AT INVERT
ELEVATION 4963.51. SEE PLUMBING PLANS FOR
CONTINUATION.
PROPOSED 6" RESIDENTIAL SANITARY SEWER SERVICE AT INVERT
ELEVATION 4961.07. SEE PLUMBING PLANS FOR CONTINUATION.
CONNECT INTO EX. 12"
WATER MAIN PER CITY'S
STANDARDS &
REGULATIONS
RELOCATE EXISTING
ELECTRIC SERVICE
PROPOSED STORM
SEWER UNDER FLOWLINE
MATCHLINE
SEE SHEET C301
MATCHLINE
SEE SHEET C301
320 WILLOW STREET
EX
.
3 4"
W
A
T
E
R
S
E
R
V
I
C
E
EX
.
3 4"
C
O
P
P
E
R
WA
T
E
R
S
E
R
V
I
C
E
EX
.
3 4"
C
O
P
P
E
R
WA
T
E
R
S
E
R
V
I
C
E
CONNECT TO EX. 6' Ø
STORM SEWER MANHOLE
(SEE SHEET C403)
STORM SEWER A
SEE SHEET C402
CONNECT TO SAND
FILTER (RE: MEP)
STORM SEWER A
SEE SHEET C402
3'
MIN.
5'
MIN.
PRESERVE & PROTECT
EXISTING POWERLINE
LOCATION OF RELOCATED BENCH
(RE: LANDSCAPE ARCHITECT)
CONNECT INTO EXISTING 12" WATER
MAIN WITH 12"x8" TAPPING SADDLE,
THRUST BLOCK, AND 8" GATE VALVE.
PROPOSED
NYLOPLAST INLET
CONNECT TO BUILDING
DRAIN SYSTEM (RE: MEP)
EX
.
A
S
P
H
A
L
T
P
A
T
H
EXISTING EDGE
OF ASPHALT
PROPOSED 2" RESIDENTIAL WATER
SERVICE WITH METER & CURB STOP
WI
L
L
O
W
S
T
R
E
E
T
(R
O
W
V
A
R
I
E
S
)
PROPOSED AREA INLET
(SEE SHEET C403)
STORM SEWER C
SEE SHEET C403
TRENCH DRAIN
AGAINST BUILDING
TRENCH DRAIN
AGAINST BUILDING
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
REFER TO THE WILLOW STREET
PLAZA IMPROVEMENT PROJECT
FOR PLANS OF THIS AREA
REFER TO THE WILLOW
STREET PLAZA
IMPROVEMENT PROJECT
FOR PLANS OF THIS AREA
SAWCUT LINE (TYP.)
SAWCUT LINE (TYP.)
CONNECT TO BUILDING
DRAIN SYSTEM (RE: MEP)
PROPOSED
STORM SEWER
1
1 2"
W
1
1 2"
W
5.5' MIN.
7
9.0' MIN.
FIRE HYDRANT
INSTALLED PER PLAN
PER PLAN
STORM SEWER C
EXCLUDED FROM
CONTRACT
60.42 LF 15" RCP @ 0.73%
56.65 LF 15" HDPE @ 0.65%
15" HDPE
6" PVC
6" PVC
PROPOSED 1 1
2" COMMERCIAL WATER
SERVICE WITH METER & CURB STOP
FIRE LINE MOVED 8' TO THE
NORTHEAST, FULLY RESTRAINED
WALL MOUNTED FIRE
HYDRANT
PROPOSED 6" COMMERCIAL
SANITARY SEWER SERVICE AT
INVERT ELEVATION 4961.06.
SEE PLUMBING PLANS FOR
CONTINUATION.
6
PROPOSED
STORM SEWER
RELOCATE EXISTING CABLE
AMPLIFIER & TELEPHONE BOX
2"
W
2"
W
2"
W
1
1 2"
W
1
1 2"
W
CTV
G
G
MH
MH
E
E
E
E
EE8"
F
8"
F
8"
F
MH
E
2"
W
2"
W
2"
W
HYD
CS CS
D
C.O
.
C.O
.
C.O
.
C.O
.
WW
HYD
6"
S
S
6"
S
S
6"
S
S
6"
S
S
6"
S
S
6"
S
S
6"
S
S
6"
S
S
FO FO FO FO
VAULT
CABLE
VAULT
ELEC
CT
V
CT
V
CT
V
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E
E
C.O
.
C.O
.
C.O
.
C.O
.
6"
S
S
6"
S
S
6"
S
S
6"
S
S
Sheet
of 17
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UT
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P
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(
S
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T
H
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F
)
LEGEND:
( IN FEET )
010 10 20 30
1 INCH = 10 FEET
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
before you dig.Call
R
E
6" SS
2" W
8" F
T
CTV
SS
W
VAULT
ELEC
HYD
G
T
ST
E
CTV
FO
1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND
PRIVATE UTILITIES AS SHOWN ARE INDICATED ACCORDING TO
THE BEST INFORMATION AVAILABLE TO THE ENGINEER. THE
ENGINEER DOES NOT GUARANTEE THE ACCURACY OF SUCH
INFORMATION. EXISTING UTILITY MAINS AND SERVICES MAY
NOT BE STRAIGHT LINES OR AS INDICATED ON THESE
DRAWINGS. THE CONTRACTOR SHALL BE RESPONSIBLE TO
CALL ALL UTILITY COMPANIES (PUBLIC AND PRIVATE) PRIOR
TO ANY CONSTRUCTION TO VERIFY EXACT UTILITY
LOCATIONS.
2.THE PLUMBING CONTRACTOR SHALL TERMINATE UTILITY
LATERALS 5' OUTSIDE OF BUILDING UNLESS NOTED
OTHERWISE. EXACT LOCATIONS (HORIZONTAL AND
VERTICAL) OF ALL UTILITY CONNECTIONS INTO THE
PROPOSED BUILDING SHALL BE COORDINATED WITH
APPROVED ARCHITECTURAL DRAWINGS.
3.REFER TO APPROVED SITE ELECTRICAL PLANS FOR ALL
CONDUITS AND POWER LINE ROUTING FOR SITE LIGHTING.
4.WATER AND SEWER SERVICE PROVIDED BY THE CITY OF
FORT COLLINS AND ALL WATER AND SEWER CONSTRUCTION
SHALL BE PER THE CITY OF FORT COLLINS STANDARD
CONSTRUCTION SPECIFICATIONS, LATEST EDITION.
5.MINIMUM DEPTH OF COVER OVER WATER MAINS SHALL BE
4.5'. MAXIMUM COVER SHALL BE 5.5'.
6.MAINTAIN 10' HORIZONTAL AND 18" VERTICAL MINIMUM
SEPARATION BETWEEN ALL SANITARY SEWER & WATER
MAINS & SERVICES.
7.ALL WATER FITTINGS AND VALVES ARE ONLY GRAPHICALLY
REPRESENTED AND ARE NOT TO SCALE.
8.WATER MAINS AND FIRE SERVICES SHALL BE AWWA C-900
PVC. WATER SERVICES SHALL BE TYPE K COPPER. HDPE PIPE
MAY BE USED FOR 1 12" AND 2" WATER SERVICES. SEE
WATERLINE NOTE 4 ON SHEET C001 REGARDING 1 12" AND 2"
WATER SERVICES.
9.SANITARY SEWER SERVICES SHALL BE SDR-35 PVC UNLESS
OTHERWISE NOTED.
10.ALL ROOF DRAIN CONNECTIONS SHALL BE HIGH DENSITY
POLYETHYLENE PIPE (HDPE) OR APPROVED EQUAL. THE
CONTRACTOR SHALL TERMINATE THE ROOF DRAIN LATERALS
5.0-FEET OUTSIDE OF BUILDING. EXACT LOCATIONS
(HORIZONTAL AND VERTICAL) OF THE ROOF DRAIN
CONNECTIONS TO THE DOWNSPOUTS AT THE PROPOSED
BUILDING SHALL BE COORDINATED WITH THE
ARCHITECTURAL DRAWINGS. THE CONNECTION TRANSITION
FROM THE SITE HDPE ROOF DRAINS TO THE INTERNAL SCH40
PVC BUILDING DRAINS SHALL BE MADE WITH A HDPE TO PVC
ADAPTER.
11.ALL PROPOSED STORM SEWER INFRASTRUCTURE, UNLESS
SPECIFIED, SHALL BE PRIVATELY OWNED AND MAINTAINED.
12.LIMITS OF STREET CUT ARE APPROXIMATE. FINAL LIMITS ARE
TO BE DETERMINED IN THE FIELD BY THE CITY ENGINEERING
INSPECTOR. ALL REPAIRS TO BE IN ACCORDANCE WITH CITY
STREET REPAIR STANDARDS.
13.LIMITS OF CONCRETE REPAIRS TO BE DETERMINED IN THE
FIELD BY THE CITY ENGINEERING INSPECTOR. CONCRETE TO
BE REMOVED JOINT TO JOINT.
14.ANY DAMAGED CURB, GUTTER, AND SIDEWALK EXISTING
PRIOR TO CONSTRUCTION, AS WELL AS STREETS,
SIDEWALKS, CURBS AND GUTTERS, DESTROYED, DAMAGED
OR REMOVED DUE TO CONSTRUCTION OF THIS PROJECT,
SHALL BE REPLACED OR RESTORED TO CITY OF FORT
COLLINS STANDARDS AT THE DEVELOPER'S EXPENSE PRIOR
TO THE ACCEPTANCE OF COMPLETED IMPROVEMENTS
AND/OR PRIOR TO THE ISSUANCE OF THE FIRST CERTIFICATE
OF OCCUPANCY.
17.CONTRACTOR SHALL COORDINATE ALL CONSTRUCTION ITEMS
IMPACTING ADJACENT PROPERTIES WITH THE PROPERTY
OWNERS PRIOR TO BEGINNING ANY CONSTRUCTION
ACTIVITIES.
18.THE CONTRACTOR SHALL PROTECT ALL EXISTING FEATURES
THAT ARE NOT TO BE REMOVED ADJACENT TO THE
CONSTRUCTION AREA INCLUDING, BUT NOT LIMITED TO,
SIDEWALKS, PRIVATE FENCES, AND ABOVE GROUND OR
UNDERGROUND UTILITIES. THE CONTRACTOR SHALL BE
RESPONSIBLE FOR ANY DAMAGE THAT SHOULD OCCUR TO
ANY ON-SITE, OFF-SITE, PUBLIC OR PRIVATE FACILITY OR
FEATURE AS A RESULT OF THE CONSTRUCTION PROCESS
FOR THIS PROJECT.
19.ANY PRIVATE FEATURES ON ADJOINING PROPERTIES
EXISTING PRIOR TO CONSTRUCTION - INCLUDING SIDEWALKS,
PRIVATE FENCES, RETAINING WALLS, AND VEGETATION -
DESTROYED, DAMAGED OR REMOVED DUE TO
CONSTRUCTION OF THIS PROJECT, SHALL BE REPLACED OR
RESTORED TO THEIR PRE-CONSTRUCTION OR BETTER
CONDITIONS.
NOTES:
DRY UTILITY NOTES
1.THE LOCATION OF PROPOSED DRY UTILITIES AS SHOWN ON THIS DRAWING ARE
SHOWN FOR HORIZONTAL ALIGNMENTS ONLY AND ARE APPROXIMATE. FINAL
DESIGNS OF DRY UTILITIES WILL BE PERFORMED BY THE APPROPRIATE UTILITY
COMPANY.
2.PHONE, INTERNET, CABLE AND FIBER SERVICE TO BE PROVIDED BY CENTURYLINK
AND/OR COMCAST. THE PROVIDER SHALL MAKE THE CONNECTION FROM EXISTING
SERVICE LINE AND PULL ALL CABLE WITHIN THE CONDUIT TO THE PROPOSED
PEDESTAL. THE DEVELOPER SHALL BE RESPONSIBLE FOR INSTALLING THE
REQUIRED QUANTITY AND SIZE OF CONDUIT, AS DELINEATED BY THE PROVIDER,
FROM THE CONNECTION POINT TO THE BUILDING AS SHOWN ON THIS PLAN.
DEVELOPER WILL DETERMINE WHO THE PROVIDER WILL BE BETWEEN CENTURYLINK
OR COMCAST.
3.ALL CONDUIT PLACED BY THE DEVELOPER FOR PHONE, INTERNET, CABLE AND FIBER
SHALL BE EQUIPPED WITH PULL TAPE AND LOCATE WIRE PER THE SPECIFICATIONS
OF EACH UTILITY COMPANY.
4.ELECTRIC SERVICE TO BE PROVIDED BY THE CITY OF FORT COLLINS. THE CITY
SHALL INSTALL THE TRANSFORMER, VAULT, AND PRIMARY LINE FROM THE
CONNECTION POINT AT THE EXISTING VAULT TO THE PROPOSED VAULT. THE COST
OF THE PRIMARY LINE, TRANSFORMER, VAULT, THE INSTALLATION OF THE
SECONDARY LINE FROM THE TRANSFORMER TO THE BUILDING, AND THE
RELOCATION OF ANY EXISTING ELECTRIC FACILITIES SHALL BE THE RESPONSIBILITY
OF THE DEVELOPER.
5.ELECTRIC TRANSFORMER VAULT SIZE IS APPROXIMATE. COORDINATE FINAL
LOCATION AND SIZE OF TRANSFORMER AND VAULT WITH APPROVED
ARCHITECTURAL PLANS AND CITY OF FORT COLLINS LIGHT AND POWER.
6.XCEL SHALL INSTALL THE CONNECTIONS TO THE EXISTING GAS MAIN, AND INSTALL
THE SERVICE TO GAS METER AT THE BUILDING AT THE DEVELOPERS EXPENSE.
7.IT IS RECOMMENDED THAT A DRY UTILITY COORDINATION MEETING TO BE SET UP BY
THE CONTRACTOR AND/OR OWNER WITH ALL DRY UTILITY AGENCIES PRIOR TO
CONSTRUCTION TO COORDINATE THEIR DESIGN.
PRESERVE & PROTECT EXISTING ELECTRIC VAULT.
1 PRESERVE & PROTECT EXISTING LIGHT POLE.
KEY NOTES:
PRESERVE & PROTECT EXISTING CABLE VAULT.
2
3
4 PRESERVE & PROTECT EXISTING IRRIGATION VAULT.
5 PROPOSED TREE (RE: LANDSCAPE ARCHITECT)
6 CONNECT TO EXISTING ELECTRIC LINE.
4" SS
6
7/27/18
2" W
1 1
2" W
1
1
7 APPROXIMATE LOCATION OF CURB STOP WITH
22.5° BEND BEHIND CURB STOP.
1
1
1
THESE RECORD DRAWINGS, PRODUCED BY NORTHERN ENGINEERING
SERVICES, INC., ARE BASED IN WHOLE, OR IN PART, UPON INFORMATION
PROVIDED BY OTHERS. NORTHERN ENGINEERING SERVICES, INC. ASSUMES
NO LIABILITY FOR THE ACCURACY OR COMPLETENESS OF THIS INFORMATION.
RECORD DRAWING
I, FREDERICK WEGERT, CERTIFY
ALL PUBLIC WATER,
WASTEWATER, AND
STORMWATER SYSTEM
IMPROVEMENTS SHOWN
HEREIN, INCLUDING ANY NOTED
CHANGES OR REVISIONS, ARE IN
GENERAL CONFORMANCE WITH
THE DESIGN/CONSTRUCTION
DOCUMENTS, PURSUANT TO
THIS RECORD DRAWING COPY
OF THE FINAL UTILITY PLANS.
SCALE: 1" = 5'
10/11/19
SANITARY SEWER
SERVICE DETAIL
E
AC
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CT
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(2
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'
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)
409 LINDEN STREET
405 LINDEN STREETPROPOSED BUILDING
310 WILLOW STREET
EX
.
2
4
"
S
A
N
I
T
A
R
Y
S
E
W
E
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A
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PROPOSED BUILDING
PROPOSED BUILDING
EX
.
8
"
P
E
S
A
N
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A
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W
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R
@
0
.
7
4
%
EXISTING TRANSFORMER TO BE RELOCATED ON OPPOSITE
SIDE OF POUDRE STREET WITHIN EXISTING EASEMENT.
INSTALL TRAFFIC RATED VAULT FOR EXISTING ELECTRICAL
TERMINATIONS. CONTACT FORT COLLINS CITY LIGHT AND
POWER FOR VAULT SIZE.
PROPOSE GAS SERVICES. SEE
MEP PLANS FOR CONTINUATION.
PROPOSED 18.3 LF OF 6" PVC RESIDENTIAL
SANITARY SEWER SERVICE AT 1.0% AT INVERT
ELEVATION 4963.49. SEE PLUMBING PLANS FOR
CONTINUATION.
PRESERVE & PROTECT EXISTING
TREE (TRUNK LOCATED ON
NEIGHBORS PROPERTY)EX. PROPERTY LINE
EX. PROPERTY LINE
EX. PROPERTY LINE
EX. SANITARY SEWER MH
RIM: 4970.68
INV IN: 495712 (NE)
INV OUT: 4957.12 (SE)
EX. SANITARY SEWER MH
RIM: 4968.87
INV OUT: 4963.28 (NW)
EX. PROPERTY LINE
EX. PROPERTY LINE
EX. PROPERTY LINE
EX. PROPERTY LINE
EX. RIGHT-OF-WAY
EX. RIGHT-OF-WAY
CONNECT TO EXISTING GAS
MAIN PER UTILITY COMPANY'S
STANDARDS & REGULATIONS
CONNECT ELECTRIC SERVICE TO
BUILDING SERVICE AT EXISTING
ELECTRIC METER (RE: MEP)
CONNECT TO EX. 3-PHASE
ELECTRIC LINE IN LINDEN ST.
WITH A PRIMARY DUCT LINE
AND VAULT PER UTILITY
COMPANY'S SPECIFICATIONS.
PROPOSED
NYLOPLAST INLET
PROPOSED
STORM SEWER
APPROX. LOCATION OF RELOCATED
SHED TO BE COORDINATED WITH
ADJACENT PROPERTY OWNER
PROPOSE ELECTRIC SERVICE. SEE
MEP PLANS FOR CONTINUATION.
EXISTING CABLE TELEVISION
PEDESTAL TO BE REMOVED
AND RESPLICED INTO A VAULT
EXISTING CABLE TELEVISION
PEDESTAL TO BE REMOVED
AND RESPLICED INTO A VAULT
REMOVE & REPLACE EXISTING
AIR CONDITIONING UNIT FOR
REGRADING IN THIS AREA
CONNECT TO EXISTING
SANITARY SEWER WITH
8"x6" TEE AT INVERT
ELEVATION 4963.33.
CONNECT TO EXISTING
SANITARY SEWER WITH
8"x6" TEE AT INVERT
ELEVATION 4963.30.
PROPOSED 18.3 LF OF 6" PVC COMMERCIAL
SANITARY SEWER SERVICE AT 1.0% AT INVERT
ELEVATION 4963.51. SEE PLUMBING PLANS FOR
CONTINUATION.
PROPOSED STORM
SEWER UNDER FLOWLINE
EX. SANITARY SEWER MH
RIM: 4971.49
INV IN: 4957.27 (NW)
INV OUT: 4957.19 (SE)
EX. 24"
S
A
N
I
T
A
R
Y
S
E
W
E
R
M
A
I
N
EX
.
3
6
"
R
C
P
ST
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R
M
S
E
W
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R
MATCHLINE
SEE SHEET C300
MATCHLINE
SEE SHEET C300
320 WILLOW STREET
316 WILLOW
STREET
CONTRACTOR TO ABANDON IN PLACE
EXISTING SANITARY SEWER SERVICE
DIRECT BORE 142.71 LF SANITARY
SEWER SERVICE AT 3.4%
CONNECT TO SAND
FILTER (RE: MEP)
3'
MIN.
APPROXIMATE LOCATION
OF RELOCATED
TRANSFORMER VAULT
8' EX.
UTILITY
EASEMENT
PROPOSED
NYLOPLAST INLET
CONNECT TO BUILDING
DRAIN SYSTEM (RE: MEP)WI
L
L
O
W
S
T
R
E
E
T
(R
O
W
V
A
R
I
E
S
)
EXISTING EDGE
OF ASPHALT
CONTRACTOR SHALL COORDINATE SANITARY
SEWER BORE WITH UTILITY COMPANIES TO
AVOID IMPACTING PEDESTALS AND VAULTS. IF
NECESSARY, SANITARY SEWER ALIGNMENT
SHALL BE REALIGNED TO THE SOUTH TO AVOID
CONFLICTING WITH PEDESTALS AND VAULTS.
CONTRACTOR SHALL COORDINATE SANITARY
SEWER BORE UNDER RAIN GARDEN AND BLOCK
STONE WALL WITH OWNER OF 316 WILLOW
STREET. (SEE NOTES 15, 16, AND 17.)
EXISTING FENCE (SEE
NOTES 15, 16, AND 17)
EXISTING TREE
EDGE OF EXISTING
CONCRETE PATH
EX
.
2
4
"
S
A
N
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T
A
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S
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W
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M
A
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PROPOSED SWITCH VAULT
PER UTILITY COMPANY'S
SPECIFICATIONS
PROPOSED AREA INLET
(SEE SHEET C403)
PROPOSED TRANSFORMER
(CONNECT TRANSFORMER TO EX.
3-PHASE ELECTRIC LINE IN LINDEN
ST. WITH A PRIMARY DUCT LINE
AND VAULT PER UTILITY
COMPANY'S SPECIFICATIONS.)
PROPOSED 4' x 5'
ELECTRIC EASEMENT
TRENCH DRAIN
AGAINST BUILDING
STORM SEWER C
SEE SHEET C403
TRENCH DRAIN
AGAINST BUILDING
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
TRENCH DRAIN
AGAINST BUILDING
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
REFER TO THE WILLOW
STREET PLAZA
IMPROVEMENT PROJECT
FOR PLANS OF THIS AREA
ABANDONMENT PER PLAN
TIE INTO MAIN SEWER
END OF BORE END OF BORE
CONNECT TO EXISTING SANITARY SEWER
SERVICE AT INVERT 4964.67. CONTRACTOR
TO VERIFY INVERT OF SEWER SERVICE
PRIOR TO CONSTRUCTION.
PER PLAN
SS CLEANOUT
15" HDPE
6" PVC
6" PVC
100 LF 4" C900 PVC (BORE)58 LF 4" SDR 35
CONNECT TO EXISTING
SANITARY SEWER MAIN
AT INVERT = 4959.78
3.8 LF
5 LF
6 LF
16 LF
SS CLEANOUTSS CLEANOUT
5.8 LF
PROPOSED
STORM SEWER
SS
SS
APPROX. LOCATION OF
CITY OF FORT COLLINS
SANITARY SEWER (24")
4" SS
6" SS
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C301
UT
I
L
I
T
Y
P
L
A
N
(
N
O
R
T
H
H
A
L
F
)
( IN FEET )
010 10 20 30
1 INCH = 10 FEET
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
before you dig.Call
R
NOTES:
LEGEND:
E
6" SS
2" W
8" F
T
CTV
SS
W
VAULT
ELEC
HY D
G
T
ST
E
CTV
FO1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATE
UTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BEST
INFORMATION AVAILABLE TO THE ENGINEER. THE ENGINEER DOES
NOT GUARANTEE THE ACCURACY OF SUCH INFORMATION. EXISTING
UTILITY MAINS AND SERVICES MAY NOT BE STRAIGHT LINES OR AS
INDICATED ON THESE DRAWINGS. THE CONTRACTOR SHALL BE
RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLIC AND
PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACT UTILITY
LOCATIONS.
2.THE PLUMBING CONTRACTOR SHALL TERMINATE UTILITY LATERALS
5' OUTSIDE OF BUILDING UNLESS NOTED OTHERWISE. EXACT
LOCATIONS (HORIZONTAL AND VERTICAL) OF ALL UTILITY
CONNECTIONS INTO THE PROPOSED BUILDING SHALL BE
COORDINATED WITH APPROVED ARCHITECTURAL DRAWINGS.
3.REFER TO APPROVED SITE ELECTRICAL PLANS FOR ALL CONDUITS
AND POWER LINE ROUTING FOR SITE LIGHTING.
4.WATER AND SEWER SERVICE PROVIDED BY THE CITY OF FORT
COLLINS AND ALL WATER AND SEWER CONSTRUCTION SHALL BE
PER THE CITY OF FORT COLLINS STANDARD CONSTRUCTION
SPECIFICATIONS, LATEST EDITION.
5.MINIMUM DEPTH OF COVER OVER WATER MAINS SHALL BE 4.5'.
MAXIMUM COVER SHALL BE 5.5'.
6.MAINTAIN 10' HORIZONTAL AND 18" VERTICAL MINIMUM SEPARATION
BETWEEN ALL SANITARY SEWER & WATER MAINS & SERVICES.
7.ALL WATER FITTINGS AND VALVES ARE ONLY GRAPHICALLY
REPRESENTED AND ARE NOT TO SCALE.
8.WATER MAINS AND FIRE SERVICES SHALL BE AWWA C-900 PVC.
WATER SERVICES SHALL BE TYPE K COPPER. HDPE PIPE MAY BE
USED FOR 1 12" AND 2" WATER SERVICES. SEE WATERLINE NOTE 4
ON SHEET C001 REGARDING 1 12" AND 2" WATER SERVICES.
9.SANITARY SEWER SERVICES SHALL BE SDR-35 PVC UNLESS
OTHERWISE NOTED.
10.ALL ROOF DRAIN CONNECTIONS SHALL BE HIGH DENSITY
POLYETHYLENE PIPE (HDPE) OR APPROVED EQUAL. THE
CONTRACTOR SHALL TERMINATE THE ROOF DRAIN LATERALS
5.0-FEET OUTSIDE OF BUILDING. EXACT LOCATIONS (HORIZONTAL
AND VERTICAL) OF THE ROOF DRAIN CONNECTIONS TO THE
DOWNSPOUTS AT THE PROPOSED BUILDING SHALL BE
COORDINATED WITH THE ARCHITECTURAL DRAWINGS. THE
CONNECTION TRANSITION FROM THE SITE HDPE ROOF DRAINS TO
THE INTERNAL SCH40 PVC BUILDING DRAINS SHALL BE MADE WITH A
HDPE TO PVC ADAPTER.
11.ALL PROPOSED STORM SEWER INFRASTRUCTURE, UNLESS
SPECIFIED, SHALL BE PRIVATELY OWNED AND MAINTAINED.
12.LIMITS OF STREET CUT ARE APPROXIMATE. FINAL LIMITS ARE TO BE
DETERMINED IN THE FIELD BY THE CITY ENGINEERING INSPECTOR.
ALL REPAIRS TO BE IN ACCORDANCE WITH CITY STREET REPAIR
STANDARDS.
13.LIMITS OF CONCRETE REPAIRS TO BE DETERMINED IN THE FIELD BY
THE CITY ENGINEERING INSPECTOR. CONCRETE TO BE REMOVED
JOINT TO JOINT.
14.ANY DAMAGED CURB, GUTTER, AND SIDEWALK EXISTING PRIOR TO
CONSTRUCTION, AS WELL AS STREETS, SIDEWALKS, CURBS AND
GUTTERS, DESTROYED, DAMAGED OR REMOVED DUE TO
CONSTRUCTION OF THIS PROJECT, SHALL BE REPLACED OR
RESTORED TO CITY OF FORT COLLINS STANDARDS AT THE
DEVELOPER'S EXPENSE PRIOR TO THE ACCEPTANCE OF
COMPLETED IMPROVEMENTS AND/OR PRIOR TO THE ISSUANCE OF
THE FIRST CERTIFICATE OF OCCUPANCY.
15.CONTRACTOR SHALL COORDINATE ALL CONSTRUCTION ITEMS
IMPACTING ADJACENT PROPERTIES WITH THE PROPERTY OWNERS
PRIOR TO BEGINNING ANY CONSTRUCTION ACTIVITIES.
16.THE CONTRACTOR SHALL PROTECT ALL EXISTING FEATURES THAT
ARE NOT TO BE REMOVED ADJACENT TO THE CONSTRUCTION AREA
INCLUDING, BUT NOT LIMITED TO, SIDEWALKS, PRIVATE FENCES,
AND ABOVE GROUND OR UNDERGROUND UTILITIES. THE
CONTRACTOR SHALL BE RESPONSIBLE FOR ANY DAMAGE THAT
SHOULD OCCUR TO ANY ON-SITE, OFF-SITE, PUBLIC OR PRIVATE
FACILITY OR FEATURE AS A RESULT OF THE CONSTRUCTION
PROCESS FOR THIS PROJECT.
17.ANY PRIVATE FEATURES ON ADJOINING PROPERTIES EXISTING
PRIOR TO CONSTRUCTION - INCLUDING SIDEWALKS, PRIVATE
FENCES, RETAINING WALLS, AND VEGETATION - DESTROYED,
DAMAGED OR REMOVED DUE TO CONSTRUCTION OF THIS PROJECT,
SHALL BE REPLACED OR RESTORED TO THEIR PRE-CONSTRUCTION
OR BETTER CONDITIONS.
DRY UTILITY NOTES
1.THE LOCATION OF PROPOSED DRY UTILITIES AS SHOWN ON
THIS DRAWING ARE SHOWN FOR HORIZONTAL ALIGNMENTS
ONLY AND ARE APPROXIMATE. FINAL DESIGNS OF DRY
UTILITIES WILL BE PERFORMED BY THE APPROPRIATE UTILITY
COMPANY.
2.PHONE, INTERNET, CABLE AND FIBER SERVICE TO BE PROVIDED
BY CENTURYLINK AND/OR COMCAST. THE PROVIDER SHALL
MAKE THE CONNECTION FROM EXISTING SERVICE LINE AND
PULL ALL CABLE WITHIN THE CONDUIT TO THE PROPOSED
PEDESTAL. THE DEVELOPER SHALL BE RESPONSIBLE FOR
INSTALLING THE REQUIRED QUANTITY AND SIZE OF CONDUIT,
AS DELINEATED BY THE PROVIDER, FROM THE CONNECTION
POINT TO THE BUILDING AS SHOWN ON THIS PLAN. DEVELOPER
WILL DETERMINE WHO THE PROVIDER WILL BE BETWEEN
CENTURYLINK OR COMCAST.
3.ALL CONDUIT PLACED BY THE DEVELOPER FOR PHONE,
INTERNET, CABLE AND FIBER SHALL BE EQUIPPED WITH PULL
TAPE AND LOCATE WIRE PER THE SPECIFICATIONS OF EACH
UTILITY COMPANY.
4.ELECTRIC SERVICE TO BE PROVIDED BY THE CITY OF FORT
COLLINS. THE CITY SHALL INSTALL THE TRANSFORMER, VAULT,
AND PRIMARY LINE FROM THE CONNECTION POINT TO THE
PROPOSED TRANSFORMER. THE COST OF THE PRIMARY LINE,
TRANSFORMER, VAULT, AND THE INSTALLATION OF THE
SECONDARY LINE FROM THE TRANSFORMER TO THE BUILDING
SHALL BE THE RESPONSIBILITY OF THE DEVELOPER. THE COST
OF THE RELOCATION OR MODIFICATION OF EXISTING
TRANSFORMERS INCLUDING ANY EXTENSIONS, SPLICES, AND
RELOCATION OF EXISTING SERVICES, SHALL BE THE
RESPONSIBILITY OF THE DEVELOPER.
5.ELECTRIC TRANSFORMER VAULT SIZE IS APPROXIMATE.
COORDINATE FINAL LOCATION AND SIZE OF TRANSFORMER AND
VAULT WITH APPROVED ARCHITECTURAL PLANS AND CITY OF
FORT COLLINS LIGHT AND POWER.
6.XCEL SHALL INSTALL THE CONNECTIONS TO THE EXISTING GAS
MAIN, AND INSTALL THE SERVICE TO GAS METER AT THE
BUILDING AT THE DEVELOPERS EXPENSE.
7.IT IS RECOMMENDED THAT A DRY UTILITY COORDINATION
MEETING TO BE SET UP BY THE CONTRACTOR AND/OR OWNER
WITH ALL DRY UTILITY AGENCIES PRIOR TO CONSTRUCTION TO
COORDINATE THEIR DESIGN.
PRESERVE & PROTECT EXISTING ELECTRIC VAULT.
1 PRESERVE & PROTECT EXISTING LIGHT POLE.
KEY NOTES:
PRESERVE & PROTECT EXISTING CABLE VAULT.
2
3
4 PRESERVE & PROTECT EXISTING IRRIGATION VAULT.
5 PROPOSED TREE (RE: LANDSCAPE ARCHITECT)
6 CONNECT TO EXISTING ELECTRIC LINE.
4" SS
7
7/27/18
THESE RECORD DRAWINGS, PRODUCED BY NORTHERN ENGINEERING
SERVICES, INC., ARE BASED IN WHOLE, OR IN PART, UPON INFORMATION
PROVIDED BY OTHERS. NORTHERN ENGINEERING SERVICES, INC. ASSUMES
NO LIABILITY FOR THE ACCURACY OR COMPLETENESS OF THIS INFORMATION.
RECORD DRAWING
I, FREDERICK WEGERT, CERTIFY
ALL PUBLIC WATER,
WASTEWATER, AND
STORMWATER SYSTEM
IMPROVEMENTS SHOWN
HEREIN, INCLUDING ANY NOTED
CHANGES OR REVISIONS, ARE IN
GENERAL CONFORMANCE WITH
THE DESIGN/CONSTRUCTION
DOCUMENTS, PURSUANT TO
THIS RECORD DRAWING COPY
OF THE FINAL UTILITY PLANS.
10/11/19
E
D
D
D
VAULT
ELEC
CSCONTROL
IRR
CONTROL
IRR
CONTROL
IRR
CS
CO
N
T
R
O
L
IRR
CO
N
T
R
O
L
IRR
CO
N
T
R
O
L
IRR
CO
N
T
R
O
L
IRR
CO
N
T
R
O
L
IRR
CON
T
R
O
L
IRR
CO
N
T
R
O
L
IR
R
CO
N
T
R
O
L
IRR
VAU
L
T
ELE
C
CS
CS
X
X
STST
STST
X
XX
X
X
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST
VAULT
ELEC
W
W
W
IRR
X
X
X
X
X
X
XXXX
X
X
X
X
X
X
M
X
LINDEN STREET
(100' ROW)
EX. SIDEWALK
EX. SIDEWALK
WITH PAVERS
EXISTING DECK
409 LINDEN STREET
405 LINDEN STREET
PROPOSED BUILDING
320 WILLOW STREET
EX
.
A
S
P
H
A
L
T
P
A
T
H
WI
L
L
O
W
S
T
R
E
E
T
(R
O
W
V
A
R
I
E
S
)
PROPOSED BUILDING
(SEE ARCHITECTURAL DRAWINGS
FOR GARAGE FIRST FLOOR GRADING)
STAIRS
ST
A
I
R
S
PROPOSED SIDEWALK
EX
.
3
6
"
R
C
P
S
T
O
R
M
S
E
W
E
R
@
0
.
1
1
%
EX
.
3
6
"
R
C
P
ST
O
R
M
S
E
W
E
R
EX. 12" RCP
STORM SEWER
EX. PROPERTY LINE
EX. PROPERTY LINE
EX. PROPERTY LINE
PRESERVE &
PROTECT TREE
PRESERVE & PROTECT TREE
PROPOSED TOP BACK
OF VERTICAL CURB
PRESERVE & PROTECT EX.
TREE (TRUNK LOCATED ON
NEIGHBORS PROPERTY)
SAWCUT LINE (TYP.)
MATCH INTO EX. CURB,
GUTTER, & SIDEWALK
EXISTING HANDICAP RAMP (TYP.)
MATCH INTO
EX. SIDEWALK
MATCH INTO EXISTING CURB & GUTTER
SAWCUT LINE (TYP.)
MATCH INTO
EX. SIDEWALK
MATCH INTO EX.
CURB & GUTTER
PROPOSED STORM
SEWER MANHOLE
EXISTING DOOR
THRESHOLD
ELEV. = 4971.42
EXISTING DOOR
THRESHOLD
ELEV. = 4971.42
PROPOSED STORM SEWER A
UNDER FLOWLINE (SEE
SHEET C402)
PROPOSED
AREA INLET
PROPOSED TOP BACK
OF VERTICAL CURB
EXISTING DOOR
THRESHOLD
ELEV. = 4970.74
EXISTING DOOR
THRESHOLD
ELEV. = 4971.20
REMOVE & REPLACE EXISTING
AIR CONDITIONING UNIT FOR
REGRADING IN THIS AREA
INSTALL VAPOR/MEMBRANE AGAINST
EXISTING BUILDING AS RECOMMENDED
OR SPECIFIED BY BUILDING ARCHITECT
EXISTING 6' Ø STORM
SEWER (SEE SHEET C403)
EX. 6' Ø STORM
SEWER MANHOLE
MATCHLINE
SEE SHEET C401
MATCHLINE
SEE SHEET C401
EXISTING
SHED
THICKEN
CONCRETE EDGE
(68
.
3
1
)
FL69.1
5
FL70.3
9
FL70.4
7
FL
(70
.
5
6
)
FL
(71
.
3
0
)
70.0
0
TC
69.8
7
TC70.0
8
TC
69.8
7
FL
71.0
6
FL
69.4
1
FL
69.1
4
GRA
T
E
69.48
FL
1.5%
3.
4
%
3.
5
%
2.
0
%
2.
0
%
1.
1
%
2.
0
%
2.0
%
1.
6
%
1.0%
2.0%
2.0%
2.0%
2.
0
%
2.0%7.0%
2.
0
%
2.
0
%
1.9
%
2.0%
2.5%
2.7%1.0%2.8%0.9%
LOWER FINISH FLOOR
ELEV = 4970.08
UPPER FINISH FLOOR
ELEV = 4971.25
71.2
4
TC71.2
3
TC
71.2
3
TC
71.2
4
TC
71.2
4
TC
71.1
1
GRD
71.23
TC
71.2
3TC
71.2
3TC
1.
1
%
(70
.
9
3
)
FL
69.6
5
(69
.
4
5
)
69.8
4
(69
.
9
4
)
(69
.
4
5
)
9.
9
%
8:
1
6.
6
%
10
:
1
70.4
0GRD
4:
1
4:
1
70.0
0GRD
GRD:69.70
TC:70.23
(69
.
4
4
)
1.5%
2.4
%
71.1
2
TC/T
S
69.9
7
TC
69.9
2
TC
69.4
6
GRA
T
E
2.
0
%
2.
0
%
1.
5
%
1.
6
%
70
.
0
8
TC
1.
5
%
2.0%
5.0%
70.0
6
GRD
/
B
W
4.1%
(69
.
4
6
)
(69
.
8
0
)
1.0%
2.
0
%
(3.6%)
(70
.
1
1
)
GRD
71.7
2
(1.7%)
71.1
7
BW
70.0
1
BW
69.6
5
(69
.
6
8
)
68.6
0
INV
70.2
5
GRD
(69
.
8
3
)
GRD
(69
.
9
3
)
(69
.
9
7
)
69.3
5
FL
70.9
9
71.0
0
71.00
71.00
71.07
70.9
8
3.1%
3.2
%
3.1%
(71
.
1
0
)
FL
4:
1
4:1
1.5
%
2.
0
%
70.2
0GRD
71.2
5
GRD
/
T
C
3.
2
%
6.4%
2.1%
2.0%
4.6%
5.0
%
4.8%
71.1
5
FL
70.7
9
FL
70.9
3
FL
1.
7
%
0.5
%
0.5
%
2.5
%
1.6%
68.7
1
FL
0.9%
TRENCH DRAIN
AGAINST BUILDING
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
TRENCH DRAIN
AGAINST BUILDING
68.
6
0
INV
(69.69)
GRD
68.
6
0
INV
(69
.
7
7
)
GRD
69.0
6
INV
68.8
0
FL
(69
.
8
1
)
GRD
68.
7
0
FL
(69.7
0
)
GRD
68.80
FL(69.81)
GRD
3.
5
%
1.
1
%
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
0.
8
%
0.
8
%
1.
6
%
1.
6
%
0.
8
%
REFER TO THE WILLOW STREET
PLAZA IMPROVEMENT PROJECT
FOR PLANS OF THIS AREA
REFER TO THE WILLOW
STREET PLAZA
IMPROVEMENT PROJECT
FOR PLANS OF THIS AREA
4971.25 4970.07
Sheet
of 17
CO
N
F
L
U
E
N
C
E
L
O
T
2
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t
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o
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e
s
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t
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,
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i
t
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r
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5
2
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c
o
m
LEGEND:
( IN FEET )
010 10 20 30
1 INCH = 10 FEET
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
before you dig.Call
R
NOTES:
C400
GR
A
D
I
N
G
P
L
A
N
(
S
O
U
T
H
)
VAULT
ELEC
1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATE UTILITIES AS
SHOWN ARE INDICATED ACCORDING TO THE BEST INFORMATION AVAILABLE TO
THE ENGINEER. THE ENGINEER DOES NOT GUARANTEE THE ACCURACY OF SUCH
INFORMATION. EXISTING UTILITY MAINS AND SERVICES MAY NOT BE STRAIGHT
LINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTOR SHALL BE
RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLIC AND PRIVATE) PRIOR TO
ANY CONSTRUCTION TO VERIFY EXACT UTILITY LOCATIONS.
2.SPOT ELEVATIONS SHOWN ARE FLOWLINE, EDGE OF PAVEMENT, OR EDGE OF
WALK UNLESS NOTED OTHERWISE.
3.ALL DISTURBED AREAS SHALL BE REVEGETATED PER THE APPROVED LANDSCAPE
PLANS.
4.ALL SOIL (NOT MULCH) IN LANDSCAPE BEDS ADJACENT TO BUILDINGS SHALL BE
PLACED SUCH THAT THE TOP OF SOIL IS AT THE SAME ELEVATION AS ADJACENT
SIDEWALK TO ALLOW FOR PROPER DRAINAGE.
5.CONTRACTOR SHALL COORDINATE ALL CONSTRUCTION ITEMS IMPACTING
ADJACENT PROPERTIES WITH THE PROPERTY OWNERS PRIOR TO BEGINNING ANY
CONSTRUCTION ACTIVITIES.
6.LIMITS OF STREET CUT ARE APPROXIMATE. FINAL LIMITS ARE TO BE DETERMINED
IN THE FIELD BY THE CITY ENGINEERING INSPECTOR. ALL REPAIRS TO BE IN
ACCORDANCE WITH CITY STREET REPAIR STANDARDS.
7.LIMITS OF CONCRETE REPAIRS TO BE DETERMINED IN THE FIELD BY THE CITY
ENGINEERING INSPECTOR. CONCRETE TO BE REMOVED JOINT TO JOINT.
8.SEE ARCHITECTURAL PLANS FOR DIMENSIONS/DESIGN OF ALL BUILDING
CONCRETE DOOR STOOPS.
9.ALL PROPOSED PAVEMENT SECTIONS WITHIN THE PUBLIC RIGHT-OF-WAY SHALL
BE SUBMITTED TO AND APPROVED BY THE CITY OF FORT COLLINS PRIOR TO
CONSTRUCTION. SEE GENERAL NOTES FOR ADDITIONAL INFORMATION.
10.ALL ROOF DRAIN CONNECTIONS SHALL BE HIGH DENSITY POLYETHYLENE PIPE
(HDPE) OR APPROVED EQUAL. THE CONTRACTOR SHALL TERMINATE THE ROOF
DRAIN LATERALS 5.0-FEET OUTSIDE OF BUILDING. EXACT LOCATIONS
(HORIZONTAL AND VERTICAL) OF THE ROOF DRAIN CONNECTIONS TO THE
DOWNSPOUTS AT THE PROPOSED BUILDING SHALL BE COORDINATED WITH THE
ARCHITECTURAL DRAWINGS. THE CONNECTION TRANSITION FROM THE SITE HDPE
ROOF DRAINS TO THE INTERNAL SCH40 PVC BUILDING DRAINS SHALL BE MADE
WITH A HDPE TO PVC ADAPTER.
11.THE SITE MUST BE SWEPT AND MAINTAINED TO PREVENT DIRT, SAW CUTTINGS,
CONCRETE WASH, TRASH & DEBRIS, LANDSCAPE MATERIALS AND OTHER
POLLUTANTS FROM ENTERING THE STORM SEWER AT ALL TIMES OR BMP'S WILL BE
REQUIRED PER CITY OF FORT COLLINS REGULATIONS.
12.CONTRACTOR SHALL COORDINATE ALL CONSTRUCTION ITEMS IMPACTING
ADJACENT PROPERTIES WITH THE PROPERTY OWNERS PRIOR TO BEGINNING ANY
CONSTRUCTION ACTIVITIES.
13.THE CONTRACTOR SHALL PROTECT ALL EXISTING FEATURES THAT ARE NOT TO BE
REMOVED ADJACENT TO THE CONSTRUCTION AREA INCLUDING, BUT NOT LIMITED
TO, SIDEWALKS, PRIVATE FENCES, AND ABOVE GROUND OR UNDERGROUND
UTILITIES. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ANY DAMAGE THAT
SHOULD OCCUR TO ANY ON-SITE, OFF-SITE, PUBLIC OR PRIVATE FACILITY OR
FEATURE AS A RESULT OF THE CONSTRUCTION PROCESS FOR THIS PROJECT.
14.ANY PRIVATE FEATURES ON ADJOINING PROPERTIES EXISTING PRIOR TO
CONSTRUCTION - INCLUDING SIDEWALKS, PRIVATE FENCES, RETAINING WALLS,
AND VEGETATION - DESTROYED, DAMAGED OR REMOVED DUE TO CONSTRUCTION
OF THIS PROJECT, SHALL BE REPLACED OR RESTORED TO THEIR
PRE-CONSTRUCTION OR BETTER CONDITIONS.
77.71
(77.90)
1.8%
(1.8%)
AC
8
7/27/18
THESE RECORD DRAWINGS, PRODUCED BY NORTHERN ENGINEERING
SERVICES, INC., ARE BASED IN WHOLE, OR IN PART, UPON INFORMATION
PROVIDED BY OTHERS. NORTHERN ENGINEERING SERVICES, INC. ASSUMES
NO LIABILITY FOR THE ACCURACY OR COMPLETENESS OF THIS INFORMATION.
RECORD DRAWING
E
D
D
VAULT
ELEC
CSCONTROL
IRR
CONTROL
IRR
IRR
CS
CO
N
T
R
O
L
IRR
CON
T
R
O
L
IRR
CO
N
T
R
O
L
IRR
CON
T
R
O
L
IRR
CO
N
T
R
O
L
IRR
CON
T
R
O
L
IRR
CO
N
T
R
O
L
IR
R
CO
N
T
R
O
L
IRR
EL
E
C
CS
X
X
ST
X
X
X
X
X
X
X
X
X
X
X
XX
X
X
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
C.O
.
VAULT
ELEC
W
W
W
IR
R
X
X
X
X
X
X
X
X X X X X
XXXX
X
X
X
X
X
X
X
M
M
TEL
E
M
M
M
M CON
T
R
O
L
IRRWSOG
E
C.O
.
X
X
X
X X
T
T
EX. SIDEWALK
PO
U
D
R
E
S
T
R
E
E
T
(2
0
'
R
O
W
)
EX. SIDEWALK
WITH PAVERS
NO BUILD EASEMENT
PO
U
D
R
E
S
T
R
E
E
T
(2
0
'
R
O
W
)
EXISTING DECK
409 LINDEN STREET
405 LINDEN STREET
PROPOSED BUILDING
320 WILLOW STREET
316 WILLOW
STREET
310 WILLOW STREET
EX
.
A
S
P
H
A
L
T
P
A
T
H
WI
L
L
O
W
S
T
R
E
E
T
(R
O
W
V
A
R
I
E
S
)
PROPOSED BUILDING
(SEE ARCHITECTURAL DRAWINGS
FOR GARAGE FIRST FLOOR GRADING)
STAIRS
ST
A
I
R
S
PROPOSED SIDEWALK
EX
.
3
6
"
R
C
P
S
T
O
R
M
S
E
W
E
R
@
0
.
1
1
%
EX
.
3
6
"
R
C
P
ST
O
R
M
S
E
W
E
R
EX. PROPERTY LINE
EX. PROPERTY LINE
EX. PROPERTY LINE
EX. PROPERTY LINE
EX. RIGHT-OF-WAY
PRESERVE &
PROTECT TREE
PRESERVE & PROTECT EX.
TREE (TRUNK LOCATED ON
NEIGHBORS PROPERTY)
MATCH INTO
EX. SIDEWALK
MATCH INTO
EX. SIDEWALK
EXISTING DOOR
THRESHOLD
ELEV. = 4971.42
EXISTING DOOR
THRESHOLD
ELEV. = 4971.42
PROPOSED STORM SEWER A
UNDER FLOWLINE (SEE
SHEET C402)
PROPOSED
AREA INLET
EXISTING DOOR
THRESHOLD
ELEV. = 4970.74
EXISTING DOOR
THRESHOLD
ELEV. = 4971.11
EXISTING DOOR
THRESHOLD
ELEV. = 4971.20
REMOVE & REPLACE EXISTING
AIR CONDITIONING UNIT FOR
REGRADING IN THIS AREA
INSTALL VAPOR/MEMBRANE AGAINST
EXISTING BUILDING AS RECOMMENDED
OR SPECIFIED BY BUILDING ARCHITECT
EXISTING 6' Ø STORM
SEWER (SEE SHEET C403)
EX. 6' Ø STORM
SEWER MANHOLE
MATCHLINE
SEE SHEET C400
MATCHLINE
SEE SHEET C400
MATCH INTO BACK OF
EXISTING RIBBON CURB
MATCH INTO BACK OF
EXISTING RIBBON CURB
MATCH INTO BACK
OF EX. RIBBON CURB
EXISTING
SHED
THICKEN
CONCRETE EDGE
CONSTRUCT CURB & GUTTER AGAINST
BUILDING. DRAIN FLOWLINE OF CURB
TOWARDS POUDRE ST. AT EX. GRADE
(71
.
3
0
)
70.0
0
TC
69.8
7
TC70.0
8
TC
69.
8
7
FL
71.0
6
FL
69.4
1
FL
69.1
4
GRA
T
E
69.48
FL
1.5%
3.
4
%
3.
5
%
2.
0
%
2.
0
%
1.
1
%
2.
0
%
2.0
%
1.
6
%
1.0%
2.0%
2.0%
2.0%
2.
0
%
2.0%7.0%
2.
0
%
2.
0
%
1.9
%
2.0%
2.5%
4.7%
2.9%
3.7%
3.1%
3.6%
2.6%
LOWER FINISH FLOOR
ELEV = 4970.08
UPPER FINISH FLOOR
ELEV = 4971.25
71.2
4
TC71.2
3
TC
71.2
3
TC
71.2
4
TC
71.2
4
TC
71.
1
1
GRD
71.23
TC
71.2
3TC
71.
2
3TC
1.
1
%
69.
2
5TC/
F
F
69.45
TC
69.0
0
TC/F
F
69.6
5
(69
.
4
5
)
69.8
4
(69
.
9
4
)
(69
.
4
5
)
9.
9
%
8:
1
6.
6
%
10
:
1
70.4
0GRD
4:
1
4:
1
70.0
0GRD
GRD:69.70
TC:70.23
(69
.
4
4
)
1.5%
71.1
2
TC/T
S
69.9
7
TC
69.9
2
TC
69.4
6
GRA
T
E
2.
0
%
68.
7
7TC
69.
0
0TC/
F
F
69.2
5
TC/F
F
2.
0
%
1.
5
%
1.
6
%
70
.
0
8
TC
1.
5
%
2.0%
70.0
6
GRD
/
B
W
4.1%
2.
0
%
(70
.
1
1
)
GRD
(2
.
7
%
)
(1.
5
%
)
71.7
2
71.1
7
BW
70.0
1
BW
69.
6
5
(69
.
6
8
)
3.1%
3.8%
2.6%
70.5
0
GRD
68.6
0
INV
(69
.
4
3
)
FL
6.3%
70.2
5
GRD
2.8%
4.2
%
(69
.
8
3
)
GRD
(69
.
0
2
)
(68
.
9
1
)
(68
.
7
1
)
(68
.
5
0
)
(69
.
9
3
)
(69
.
9
7
)
70.0
0
GRD
(69
.
8
3
)
70.9
9
71.0
0
71.00
71.00
71.07
70.9
8
3.1%
3.2
%
3.1%
4:
1
4:1
1.5
%
2.
0
%
70.2
0GRD
71.2
5
GRD
/
T
C
3.
2
%
6.4%
2.1%
2.0%
4.6%
5.0
%
4.8%
71.1
5
FL
70.7
9
FL
70.9
3
FL
1.
7
%
0.5
%
0.5
%
2.5
%
(8.
6
%
)
(3.1%)(4.9%)(5.6%)
(9.
2
%
)
(4.9%)
(69
.
6
7
)
70.3
8
1.6%
TRENCH DRAIN
AGAINST BUILDING
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
TRENCH DRAIN
AGAINST BUILDING
68.6
0
INV
(69.69)
GRD
68.6
0
INV
(69
.
7
7
)
GRD
(69.43)
GRD
69.0
6
INV
68.8
0
FL
(69
.
8
1
)
GRD
68.7
0
FL
(69.7
0
)
GRD
68.80
FL(69.81)
GRD
68.5
0
FL
(69
.
6
6
)
GRD
3.
5
%
1.
1
%
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
CONNECT TRENCH DRAIN TO
BUILDING'S INTERNAL DRAINAGE
SYSTEM (RE: ARCHITECT & MEP)
0.
8
%
0.
8
%
1.
6
%
1.
6
%
0.
8
%
1.
6
%
REFER TO THE WILLOW STREET
PLAZA IMPROVEMENT PROJECT
FOR PLANS OF THIS AREA
REFER TO THE WILLOW
STREET PLAZA
IMPROVEMENT PROJECT
FOR PLANS OF THIS AREA
6.3
%
10.3%
6.
9
%
7.5%
0.5%69.3
5FL
PROPOSED 14" WIDE VALLEY PAN WITH FL
SLOPE @ 0.5%. MATCH UPSTREAM END OF
VALLEY PAN INTO EXISTING GRADE.
MATCH DOWNSTREAM END OF VALLEY PAN INTO
TOP OF GRATE OF PROPOSED TRENCH DRAIN.
70.3
9FL
2.
0
%
PROPOSED SWALE WITH FL @ 2.0%
70.
5
0
GRD
70.7
5
GRD
70.
2
5
GRD
70.
2
5
GRD
70.46
4971.25 4970.07
9:
1
APPROX. LOCATION OF RELOCATED
SHED TO BE COORDINATED WITH
ADJACENT PROPERTY OWNER
68.3
3
INV
(70
.
0
2
)
FL
Sheet
of 17
CO
N
F
L
U
E
N
C
E
L
O
T
2
Th
e
s
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d
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d
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P
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g
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I
n
c
.
30
1
N
o
r
t
h
H
o
w
e
s
S
t
r
e
e
t
,
S
u
i
t
e
1
0
0
Fo
r
t
C
o
l
l
i
n
s
,
C
o
l
o
r
a
d
o
8
0
5
2
1
E
N
G
I
N
E
E
R
N
G
I
E
H
T
R
O
N
R
N
PH
O
N
E
:
9
7
0
.
2
2
1
.
4
1
5
8
ww
w
.
n
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r
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n
g
i
n
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r
i
n
g
.
c
o
m
LEGEND:
( IN FEET )
010 10 20 30
1 INCH = 10 FEET
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
before you dig.Call
R
C401
GR
A
D
I
N
G
P
L
A
N
(
N
O
R
T
H
H
A
L
F
)
VAULT
ELEC
77.71
(77.90)
1.8%
(1.8%)
AC
NOTES:
1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATE
UTILITIES AS SHOWN ARE INDICATED ACCORDING TO THE BEST
INFORMATION AVAILABLE TO THE ENGINEER. THE ENGINEER DOES NOT
GUARANTEE THE ACCURACY OF SUCH INFORMATION. EXISTING UTILITY
MAINS AND SERVICES MAY NOT BE STRAIGHT LINES OR AS INDICATED
ON THESE DRAWINGS. THE CONTRACTOR SHALL BE RESPONSIBLE TO
CALL ALL UTILITY COMPANIES (PUBLIC AND PRIVATE) PRIOR TO ANY
CONSTRUCTION TO VERIFY EXACT UTILITY LOCATIONS.
2.SPOT ELEVATIONS SHOWN ARE FLOWLINE, EDGE OF PAVEMENT, OR
EDGE OF WALK UNLESS NOTED OTHERWISE.
3.ALL DISTURBED AREAS SHALL BE REVEGETATED PER THE APPROVED
LANDSCAPE PLANS.
4.ALL SOIL (NOT MULCH) IN LANDSCAPE BEDS ADJACENT TO BUILDINGS
SHALL BE PLACED SUCH THAT THE TOP OF SOIL IS AT THE SAME
ELEVATION AS ADJACENT SIDEWALK TO ALLOW FOR PROPER DRAINAGE.
5.CONTRACTOR SHALL COORDINATE ALL CONSTRUCTION ITEMS
IMPACTING ADJACENT PROPERTIES WITH THE PROPERTY OWNERS
PRIOR TO BEGINNING ANY CONSTRUCTION ACTIVITIES.
6.LIMITS OF STREET CUT ARE APPROXIMATE. FINAL LIMITS ARE TO BE
DETERMINED IN THE FIELD BY THE CITY ENGINEERING INSPECTOR. ALL
REPAIRS TO BE IN ACCORDANCE WITH CITY STREET REPAIR
STANDARDS.
7.LIMITS OF CONCRETE REPAIRS TO BE DETERMINED IN THE FIELD BY THE
CITY ENGINEERING INSPECTOR. CONCRETE TO BE REMOVED JOINT TO
JOINT.
8.SEE ARCHITECTURAL PLANS FOR DIMENSIONS/DESIGN OF ALL BUILDING
CONCRETE DOOR STOOPS.
9.ALL PROPOSED PAVEMENT SECTIONS WITHIN THE PUBLIC
RIGHT-OF-WAY SHALL BE SUBMITTED TO AND APPROVED BY THE CITY
OF FORT COLLINS PRIOR TO CONSTRUCTION. SEE GENERAL NOTES FOR
ADDITIONAL INFORMATION.
10.ALL ROOF DRAIN CONNECTIONS SHALL BE HIGH DENSITY
POLYETHYLENE PIPE (HDPE) OR APPROVED EQUAL. THE CONTRACTOR
SHALL TERMINATE THE ROOF DRAIN LATERALS 5.0-FEET OUTSIDE OF
BUILDING. EXACT LOCATIONS (HORIZONTAL AND VERTICAL) OF THE
ROOF DRAIN CONNECTIONS TO THE DOWNSPOUTS AT THE PROPOSED
BUILDING SHALL BE COORDINATED WITH THE ARCHITECTURAL
DRAWINGS. THE CONNECTION TRANSITION FROM THE SITE HDPE ROOF
DRAINS TO THE INTERNAL SCH40 PVC BUILDING DRAINS SHALL BE MADE
WITH A HDPE TO PVC ADAPTER.
11.THE SITE MUST BE SWEPT AND MAINTAINED TO PREVENT DIRT, SAW
CUTTINGS, CONCRETE WASH, TRASH & DEBRIS, LANDSCAPE MATERIALS
AND OTHER POLLUTANTS FROM ENTERING THE STORM SEWER AT ALL
TIMES OR BMP'S WILL BE REQUIRED PER CITY OF FORT COLLINS
REGULATIONS.
12.CONTRACTOR SHALL COORDINATE ALL CONSTRUCTION ITEMS
IMPACTING ADJACENT PROPERTIES WITH THE PROPERTY OWNERS
PRIOR TO BEGINNING ANY CONSTRUCTION ACTIVITIES.
13.THE CONTRACTOR SHALL PROTECT ALL EXISTING FEATURES THAT ARE
NOT TO BE REMOVED ADJACENT TO THE CONSTRUCTION AREA
INCLUDING, BUT NOT LIMITED TO, SIDEWALKS, PRIVATE FENCES, AND
ABOVE GROUND OR UNDERGROUND UTILITIES. THE CONTRACTOR
SHALL BE RESPONSIBLE FOR ANY DAMAGE THAT SHOULD OCCUR TO
ANY ON-SITE, OFF-SITE, PUBLIC OR PRIVATE FACILITY OR FEATURE AS A
RESULT OF THE CONSTRUCTION PROCESS FOR THIS PROJECT.
14.ANY PRIVATE FEATURES ON ADJOINING PROPERTIES EXISTING PRIOR
TO CONSTRUCTION - INCLUDING SIDEWALKS, PRIVATE FENCES,
RETAINING WALLS, AND VEGETATION - DESTROYED, DAMAGED OR
REMOVED DUE TO CONSTRUCTION OF THIS PROJECT, SHALL BE
REPLACED OR RESTORED TO THEIR PRE-CONSTRUCTION OR BETTER
CONDITIONS.
9
7/27/18
THESE RECORD DRAWINGS, PRODUCED BY NORTHERN ENGINEERING
SERVICES, INC., ARE BASED IN WHOLE, OR IN PART, UPON INFORMATION
PROVIDED BY OTHERS. NORTHERN ENGINEERING SERVICES, INC. ASSUMES
NO LIABILITY FOR THE ACCURACY OR COMPLETENESS OF THIS INFORMATION.
RECORD DRAWING
4958
4960
4965
4970
4975
4958
4960
4965
4970
4975
9+75 10+00 11+00 11+50
PR
O
P
O
S
E
D
5
'
D
I
A
.
S
T
O
R
M
M
H
A
1
ST
A
:
1
0
+
0
0
.
0
0
RI
M
:
4
9
7
0
.
1
0
IN
V
I
N
:
4
9
6
1
.
0
5
1
5
"
R
C
P
(
N
W
)
IN
V
I
N
:
4
9
5
9
.
3
0
3
6
"
R
C
P
(
S
W
)
IN
V
O
U
T
:
4
9
5
9
.
3
0
3
6
"
R
C
P
(
N
E
)
58.64 LF 15" RCP @ 0
.
8
0
%
PR
O
P
O
S
E
D
S
T
O
R
M
I
N
L
E
T
A
2
ST
A
:
1
0
+
5
8
.
6
4
FL
:
4
9
6
9
.
4
9
IN
V
I
N
:
4
9
6
1
.
5
2
1
5
"
H
D
P
E
(
N
W
)
IN
V
O
U
T
:
4
9
6
1
.
5
2
1
5
"
R
C
P
(
S
E
)
56.71 LF 15" HDPE @ 0
.
8
0
%
PR
O
P
O
S
E
D
C
O
N
N
E
C
T
I
O
N
TO
B
U
I
L
D
I
N
G
ST
A
:
1
1
+
2
9
.
3
1
IN
V
O
U
T
:
4
9
6
2
.
0
9
1
5
"
H
D
P
E
(
S
E
)
EXISTING GROUND
FINISH GROUND
STA.=10+52.19
ASSUMED T.O.P. = 4965.14
EX. FIBER OPTIC
STA.=10+45.69
ASSUMED T.O.P. = 4964.70
EX. ELECTRIC
STA.=10+44.56
ASSUMED T.O.P. = 4964.55
EX. IRRIGATION
STA.=10+41.42
ASSUMED T.O.P. = 4964.50
EX. ELECTRIC
STA.=10+38.66
ASSUMED T.O.P. = 4964.71
EX. CABLE TV
STA.=10+31.17
ASSUMED T.O.P. = 4965.24
EX. GAS
STA.=10+24.73
ASSUMED T.O.P. = 4965.53
EX. TELEPHONE
STA.=10+74.26
ASSUMED T.O.P. = 4965.80
PROPSOED ELECTRIC
STA.=10+11.42
INV. = 4958.72
EX. SANITARY SEWER
STA.=10+22.11
ASSUMED T.O.P. = 4965.15
EX. WATER
STA.=10+39.55
ASSUMED T.O.P. = 4964.65
EX. ELECTRIC
EX
.
EX
.
PR
O
P
O
S
E
D
S
T
O
R
M
I
N
L
E
T
A
3
ST
A
:
1
1
+
1
5
.
3
5
FL
:
4
9
7
1
.
1
3
IN
V
I
N
:
4
9
6
1
.
9
7
1
5
"
H
D
P
E
(
N
W
)
IN
V
I
N
:
4
9
6
1
.
9
7
6
"
P
V
C
(
S
W
)
IN
V
O
U
T
:
4
9
6
1
.
9
7
1
5
"
H
D
P
E
(
S
E
)
13.96 LF 15" HDPE @ 0.81%
MH
EEE
E
E
2" W 2" W
2" W
CS
CS
D
W
E
IR
R
IR
R
IR
R
IR
R
IR
R
CS
FO
FO
FO
FO
FO
T
T
T
T
T
W
W
W
W
W
W W W
ST
ST
ST
ST
ST
ST
SS
SS
SS
SS
SS
SS
W
CT
V
CT
V
CT
V
CT
V
CT
V
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
G
G
G
G
G
STORM MH A1
STA 10+00.00
N: 132238.46
E: 195991.71
58.64 LF 15" RCP @ 0.80%
STORM INLET A2
STA 10+58.64
N: 132277.46
E: 195947.92
56.71 LF 15" HDPE @ 0.80%
CONNECTION
TO BUILDING
STA 11+29.31
N: 132324.46
E: 195895.14LI
N
D
E
N
S
T
R
E
E
T
(1
0
0
'
R
O
W
)
EX
I
S
T
I
N
G
D
E
C
K
405 LINDEN STREET
PROPOSED BUILDING
3'
MIN.
EX
.
8
"
P
V
C
S
A
N
I
T
A
R
Y
S
E
W
E
R
EX. RIGHT-OF-WAY
PROPOSED STORM
SEWER UNDER FLOWLINE
EX. 3
4" COPPER
WATER SERVICE
EX
.
1
2
"
C
9
0
0
WA
T
E
R
M
A
I
N
EX
.
3
6
"
S
T
O
R
M
S
E
W
E
R
11.86 LF 6" PVC @ 4.00%
13.96 LF 15" HDPE @ 0.81%
STORM INLET A3
STA 11+15.35
N: 132315.18
E: 195905.57
STORM INLET A3-1
PROPOSED 12"
NYLOPLAST INLET
GRATE: 4969.14
INV OUT: 4962.71
7.00 LF 6" HDPE @ 2.0%
Sheet
of 17
CO
N
F
L
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30
1
N
o
r
t
h
H
o
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e
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r
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S
u
i
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0
0
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r
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l
l
i
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o
l
o
r
a
d
o
8
0
5
2
1
E
N
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I
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R
N
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I
E
H
T
R
O
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R
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PH
O
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E
:
9
7
0
.
2
2
1
.
4
1
5
8
ww
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.
n
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n
g
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e
r
i
n
g
.
c
o
m
LEGEND:
( IN FEET )
010 10 20 30
1 INCH = 10 FEET
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
before you dig.Call
R
C402
ST
O
R
M
S
E
W
E
R
A
P
L
A
N
&
P
R
O
F
I
L
E
E
6" SS
2" W
6" F
T
CTV
SS
W
VAULT
ELEC
HYD
G
T
ST
E
CTV
FO
NOTES:
PROFILE SCALE:
1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATE UTILITIES AS
SHOWN ARE INDICATED ACCORDING TO THE BEST INFORMATION AVAILABLE TO
THE ENGINEER. THE ENGINEER DOES NOT GUARANTEE THE ACCURACY OF
SUCH INFORMATION. EXISTING UTILITY MAINS AND SERVICES MAY NOT BE
STRAIGHT LINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTOR
SHALL BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLIC AND
PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACT UTILITY LOCATIONS.
2.THE PLUMBING CONTRACTOR SHALL TERMINATE UTILITY LATERALS 5' OUTSIDE
OF BUILDING UNLESS NOTED OTHERWISE. EXACT LOCATIONS (HORIZONTAL
AND VERTICAL) OF ALL UTILITY CONNECTIONS INTO THE PROPOSED BUILDING
SHALL BE COORDINATED WITH APPROVED ARCHITECTURAL DRAWINGS.
3.PIPE LENGTHS ARE CALCULATED FROM THE CENTER OF MANHOLES AND INLET
BOX STRUCTURES. SPECIFIED LENGTH OF PIPE INCLUDES THE LAYING LENGTH
OF FLARED END SECTIONS.
4.MANHOLE DIAMETERS SHOWN ARE THE MINIMUM SIZE PER CITY STANDARD
DETAIL D-3. CONTRACTOR SHALL CONFIRM THAT MANHOLE DIAMETERS ARE
SUFFICIENT FOR THEIR PROPOSED METHODS OF INSTALLATION (i.e., WITHIN
PRE-CASTER'S TOLERANCES, ETC.).
5.CONTRACTOR SHALL PROVIDE A MINIMUM COVER OVER STORM SEWER PIPE
DURING CONSTRUCTION IN ACCORDANCE WITH MANUFACTURER
RECOMMENDATIONS.
6.ALL ROOF DRAIN CONNECTIONS SHALL BE HIGH DENSITY POLYETHYLENE PIPE
(HDPE) OR APPROVED EQUAL. THE CONTRACTOR SHALL TERMINATE THE ROOF
DRAIN LATERALS 5.0-FEET OUTSIDE OF BUILDING. EXACT LOCATIONS
(HORIZONTAL AND VERTICAL) OF THE ROOF DRAIN CONNECTIONS TO THE
DOWNSPOUTS AT THE PROPOSED BUILDING SHALL BE COORDINATED WITH THE
ARCHITECTURAL DRAWINGS. THE CONNECTION TRANSITION FROM THE SITE
HDPE ROOF DRAINS TO THE INTERNAL SCH40 PVC BUILDING DRAINS SHALL BE
MADE WITH A HDPE TO PVC ADAPTER.
7.UNLESS NOTED, ALL PROPOSED STORM SEWER AS SHOWN ON THESE
DRAWINGS ARE PRIVATE.
8.STORM SEWER MAINS SHOWN ON THESE DRAWINGS ARE HIGH DENSITY
POLYETHYLENE (HDPE) AND SHALL BE WATERTIGHT ADS N-12 OR APPROVED
EQUAL. STORM SEWER MAINS SHOWN ON THESE DRAWINGS AS REINFORCED
CONCRETE PIPE (RCP) SHALL BE CLASS III RCP.
9.ANY DAMAGED CURB, GUTTER, AND SIDEWALK EXISTING PRIOR TO
CONSTRUCTION, AS WELL AS STREETS, SIDEWALKS, CURBS AND GUTTERS,
DESTROYED, DAMAGED OR REMOVED DUE TO CONSTRUCTION OF THIS
PROJECT, SHALL BE REPLACED OR RESTORED TO CITY OF FORT COLLINS
STANDARDS AT THE DEVELOPER'S EXPENSE PRIOR TO THE ACCEPTANCE OF
COMPLETED IMPROVEMENTS AND/OR PRIOR TO THE ISSUANCE OF THE FIRST
CERTIFICATE OF OCCUPANCY.
SCHEDULE OF INLETS:
INLET NUMBER TYPE
STORM INLET A2 AREA INLET
STORM INLET A3 18" NYLOPLAST
STORM INLET A3-1 12" NYLOPLAST
10
7/27/18
THESE RECORD DRAWINGS, PRODUCED BY NORTHERN ENGINEERING
SERVICES, INC., ARE BASED IN WHOLE, OR IN PART, UPON INFORMATION
PROVIDED BY OTHERS. NORTHERN ENGINEERING SERVICES, INC. ASSUMES
NO LIABILITY FOR THE ACCURACY OR COMPLETENESS OF THIS INFORMATION.
RECORD DRAWING
P-Strm-C
4962
4965
4970
4975
4962
4965
4970
4975
9+75 10+00 11+00
PR
O
P
O
S
E
D
S
T
O
R
M
I
N
L
E
T
C
2
CO
N
T
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I
L
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A
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I
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:
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4
.
6
6
FL
:
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9
7
0
.
4
8
IN
V
O
U
T
:
4
9
6
3
.
9
2
1
5
"
R
C
P
(
S
)
74.66 LF 15" RCP @ 0.70%
EXISTING GROUND
CONNECT PROPOSED 15" RCP
STORM SEWER TO EXISTING
MANHOLE (CORE & SEAL)
FINISH GROUND
St
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.
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4
9
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.
1
8
(
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)
STA.=10+66.93
ASSUMED T.O.P. = 4967.34
EX. WATER
STA.=10+59.39
ASSUMED T.O.P. = 4967.79
EX. TELEPHONE
STA.=10+08.26
INV. = 4956.92
EXISTING SANITARY SEWER
(LOCATED OUTSIDE OF PROFILE)
IRR
IRR
IRR
IRR
IRR
IRR
IRR
IRR
IRR
IRR
IR
R
D
CS
CON
T
R
O
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IRR
CO
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L
IRR
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IRR
CON
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IRR
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IRR
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IRR
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IR
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IRR
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FO
FO FO
FO
FO FO
FO FO
FO
FO
T
T
T
T
T
T
T
T
T
T
W
W
W
W
W
W
W
W
W
ST
ST
ST
ST
ST
ST
ST
ST
CA
B
L
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TE
L
E
W
CT
V
CT
V
CTV
CTV
CTV
CTV
CTV
CTV
CTV
CTV
CTV
CTV CTV CTV CTV
CTV
CTV
CTV
CTV
E
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G
G
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IRR
EX. STORM MH C1
STA 10+00.00
N: 132149.06
E: 195819.67
74.6
6
L
F
1
5
"
R
C
P
@
0
.
7
0
%
STORM INLET C2
STA 10+74.66
N: 132222.91
E: 195830.59
RELOCATED
CONNECT PROPOSED 15" RCP
STORM SEWER TO EXISTING
MANHOLE (CORE & SEAL)
EX
.
A
S
P
H
A
L
T
P
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WI
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)
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BU
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EX
.
2
4
"
S
A
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.
6
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D
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EX
.
3
6
"
S
T
O
R
M
S
E
W
E
R
M
A
I
N
REFER TO THE
WILLOW STREET
PLAZA IMPROVEMENT
PROJECT FOR PLANS
OF THIS AREA
Sheet
of 17
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LEGEND:
( IN FEET )
010 10 20 30
1 INCH = 10 FEET
CALL 2 BUSINESS DAYS IN ADVANCE BEFORE YOU
DIG, GRADE, OR EXCAVATE FOR THE MARKING OF
UNDERGROUND MEMBER UTILITIES.
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what'sbelow.
before you dig.Call
R
C403
ST
O
R
M
S
E
W
E
R
C
P
L
A
N
&
P
R
O
F
I
L
E
E
6" SS
2" W
6" F
T
CTV
SS
W
VAULT
ELEC
HYD
G
T
ST
E
CTV
FO
NOTES:
PROFILE SCALE:
1.EXISTING UNDERGROUND AND OVERHEAD PUBLIC AND PRIVATE UTILITIES AS
SHOWN ARE INDICATED ACCORDING TO THE BEST INFORMATION AVAILABLE TO
THE ENGINEER. THE ENGINEER DOES NOT GUARANTEE THE ACCURACY OF
SUCH INFORMATION. EXISTING UTILITY MAINS AND SERVICES MAY NOT BE
STRAIGHT LINES OR AS INDICATED ON THESE DRAWINGS. THE CONTRACTOR
SHALL BE RESPONSIBLE TO CALL ALL UTILITY COMPANIES (PUBLIC AND
PRIVATE) PRIOR TO ANY CONSTRUCTION TO VERIFY EXACT UTILITY LOCATIONS.
2.THE PLUMBING CONTRACTOR SHALL TERMINATE UTILITY LATERALS 5' OUTSIDE
OF BUILDING UNLESS NOTED OTHERWISE. EXACT LOCATIONS (HORIZONTAL
AND VERTICAL) OF ALL UTILITY CONNECTIONS INTO THE PROPOSED BUILDING
SHALL BE COORDINATED WITH APPROVED ARCHITECTURAL DRAWINGS.
3.PIPE LENGTHS ARE CALCULATED FROM THE CENTER OF MANHOLES AND INLET
BOX STRUCTURES. SPECIFIED LENGTH OF PIPE INCLUDES THE LAYING LENGTH
OF FLARED END SECTIONS.
4.MANHOLE DIAMETERS SHOWN ARE THE MINIMUM SIZE PER CITY STANDARD
DETAIL D-3. CONTRACTOR SHALL CONFIRM THAT MANHOLE DIAMETERS ARE
SUFFICIENT FOR THEIR PROPOSED METHODS OF INSTALLATION (i.e., WITHIN
PRE-CASTER'S TOLERANCES, ETC.).
5.CONTRACTOR SHALL PROVIDE A MINIMUM COVER OVER STORM SEWER PIPE
DURING CONSTRUCTION IN ACCORDANCE WITH MANUFACTURER
RECOMMENDATIONS.
6.ALL ROOF DRAIN CONNECTIONS SHALL BE HIGH DENSITY POLYETHYLENE PIPE
(HDPE) OR APPROVED EQUAL. THE CONTRACTOR SHALL TERMINATE THE ROOF
DRAIN LATERALS 5.0-FEET OUTSIDE OF BUILDING. EXACT LOCATIONS
(HORIZONTAL AND VERTICAL) OF THE ROOF DRAIN CONNECTIONS TO THE
DOWNSPOUTS AT THE PROPOSED BUILDING SHALL BE COORDINATED WITH THE
ARCHITECTURAL DRAWINGS. THE CONNECTION TRANSITION FROM THE SITE
HDPE ROOF DRAINS TO THE INTERNAL SCH40 PVC BUILDING DRAINS SHALL BE
MADE WITH A HDPE TO PVC ADAPTER.
7.UNLESS NOTED, ALL PROPOSED STORM SEWER AS SHOWN ON THESE
DRAWINGS ARE PRIVATE.
8.STORM SEWER MAINS SHOWN ON THESE DRAWINGS ARE HIGH DENSITY
POLYETHYLENE (HDPE) AND SHALL BE WATERTIGHT ADS N-12 OR APPROVED
EQUAL. STORM SEWER MAINS SHOWN ON THESE DRAWINGS AS REINFORCED
CONCRETE PIPE (RCP) SHALL BE CLASS III RCP.
9.ANY DAMAGED CURB, GUTTER, AND SIDEWALK EXISTING PRIOR TO
CONSTRUCTION, AS WELL AS STREETS, SIDEWALKS, CURBS AND GUTTERS,
DESTROYED, DAMAGED OR REMOVED DUE TO CONSTRUCTION OF THIS
PROJECT, SHALL BE REPLACED OR RESTORED TO CITY OF FORT COLLINS
STANDARDS AT THE DEVELOPER'S EXPENSE PRIOR TO THE ACCEPTANCE OF
COMPLETED IMPROVEMENTS AND/OR PRIOR TO THE ISSUANCE OF THE FIRST
CERTIFICATE OF OCCUPANCY.
SCHEDULE OF INLETS:
INLET NUMBER TYPE
STORM INLET C2 AREA INLET
11
7/27/18
THESE RECORD DRAWINGS, PRODUCED BY NORTHERN ENGINEERING
SERVICES, INC., ARE BASED IN WHOLE, OR IN PART, UPON INFORMATION
PROVIDED BY OTHERS. NORTHERN ENGINEERING SERVICES, INC. ASSUMES
NO LIABILITY FOR THE ACCURACY OR COMPLETENESS OF THIS INFORMATION.
RECORD DRAWING
STORM SEWER REMOVED PER CITY OF FORT COLLINS
WILLOW STREET IMPROVEMENT PROJECT
Drainage Certification Letter August 14, 2020
Confluence Page 8 of 3
Appendix E
State Portal Documents
Stormwater Facility Name:
Facility Location & Jurisdiction:
User Input: Watershed Characteristics User Defined User Defined User Defined User Defined
Selected BMP Type =SF Stage [ft]Area [ft^2]Stage [ft]Discharge [cfs]
Watershed Area =0.23 acres 0.00 575 0.00 0.00
Watershed Length =127 ft 0.25 575 0.25 0.14
Watershed Length to Centroid =64 ft 0.50 575 0.50 0.39
Watershed Slope =0.010 ft/ft 0.75 575 0.75 0.53
Watershed Imperviousness =100.0%percent 1.00 575 1.00 0.64
Percentage Hydrologic Soil Group A =100.0%percent 1.25 575 1.25 0.73
Percentage Hydrologic Soil Group B =0.0%percent 1.50 575 1.50 0.82
Percentage Hydrologic Soil Groups C/D =0.0%percent 1.75 575 1.75 0.89
Target WQCV Drain Time =12.0 hours 2.00 575 2.00 0.96
2.25 914 2.25 1.03
User Input 2.50 914 2.50 1.09
2.75 914 2.75 1.15
3.00 914 3.00 1.20
3.25 914 3.25 1.26
3.50 914 3.50 1.31
3.75 914 3.75 1.35
4.00 914 4.00 1.40
After completing and printing this worksheet to a pdf, go to:
https://maperture.digitaldataservices.com/gvh/?viewer=cswdif
Create a new stormwater facility, and attach the PDF of this
worksheet to that record.
Routed Hydrograph Results
Design Storm Return Period =WQCV 2 Year 5 Year 10 Year 50 Year 100 Year
One-Hour Rainfall Depth =N/A 0.82 1.14 1.40 2.27 2.86 in
CUHP Runoff Volume =0.008 0.014 0.020 0.025 0.042 0.053 acre-ft
Inflow Hydrograph Volume =N/A 0.014 0.020 0.025 0.042 0.053 acre-ft
Time to Drain 97% of Inflow Volume =1.0 2.3 2.3 2.3 2.3 2.2 hours
Time to Drain 99% of Inflow Volume =1.3 2.7 2.7 2.7 2.6 2.6 hours
Maximum Ponding Depth =0.58 0.28 0.37 0.43 0.77 1.03 ft
Maximum Ponded Area =0.01 0.01 0.01 0.01 0.01 0.01 acres
Maximum Volume Stored =0.008 0.004 0.005 0.006 0.010 0.014 acre-ft
Once CUHP has been run and the Stage-Area-Discharge
information has been provided, click 'Process Data' to
interpolate the Stage-Area-Volume-Discharge data and
generate summary results in the table below. Once this is
complete, click 'Print to PDF'.
Stormwater Detention and Infiltration Design Data Sheet
Confluence Detention Vault
Fort Collins, Colorado
SDI-Design Data v2.00, Released January 2020
Location for 1-hr Rainfall Depths (use dropdown):
After providing required inputs above including 1-hour
rainfall depths, click 'Run CUHP' to generate runoff
hydrographs using the embedded Colorado Urban
Hydrograph Procedure.
SDI_Design_Data_v2.00.xlsm, Design Data 7/30/2020, 11:38 AM
Booleans for Message Booleans for CUHP
Watershed L:W 1 CUHP Inputs Complete
Watershed Lc:L 1 CUHP Results Calculated
Watershed Slope FALSE Time Interval
RunOnce 1
CountA 1
Draintime Coeff 0.8
User Precip 1
Equal SA Inputs 1
Equal SD Inputs 1
Stormwater Detention and Infiltration Design Data Sheet
0
0.2
0.4
0.6
0.8
1
1.2
0.1 1 10
FL
O
W
[
c
f
s
]
TIME [hr]
100YR IN
100YR OUT
50YR IN
50YR OUT
10YR IN
10YR OUT
5YR IN
5YR OUT
2YR IN
2YR OUT
WQCV IN
WQCV OUT
0
0.2
0.4
0.6
0.8
1
1.2
0.1 1 10 100
PO
N
D
I
N
G
D
E
P
T
H
[
f
t
]
DRAIN TIME [hr]
100YR
50YR
10YR
5YR
2YR
WQCV
SDI_Design_Data_v2.00.xlsm, Design Data 7/30/2020, 11:38 AM
This unofficial copy was downloaded on Jul-30-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com
For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA