HomeMy WebLinkAboutSite Certifications - 06/05/2018Mr. Wes Lamarque
City of Fort Collins Stormwater Utility
700 Wood St.
Fort Collins, CO
April 10, 2018
RE: Drainage Certification for Hill Pond Residences
Dear Mr. Lamarque,
This drainage certification letter is provided to verify as-constructed conditions for Hill Pond Residences.
Washburn Land Surveying completed survey work March 27, 2018 to verify general compliance with the
Final Utility Plans for Hill Pond Residences, dated 8/24/16 including revised drawings dated 7/14/17,
8/18/17, 8/23/17 and 10/24/17 by Northern Engineering.
Included in this drainage certification submittal are the following:
Attachment 1 - City of Fort Collins Overall Site and Drainage Certification Form.
Attachment 2 - City of Fort Collins During Construction Inspection Checklist and photographs provided
by contractor.
Attachment 3 - As-constructed record drawings for Grading and Storm Drain Plan and Profile Sheets.
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:
•Item III.A.1: Northern Engineering did not observe construction. Northern Engineering was
unable to verify the pipe sizes and materials used. According to the contractor, the storm drain
was installed per the approved design drawings.
•Item III.B.3: Northern Engineering did not observe construction. Northern Engineering was
unable to verify the joint type and construction methods used. According to the contractor, the
storm drain was installed per the approved design drawings.
•Item VII.A.1: Northern Engineering did not observe construction. Northern Engineering was
unable to verify the pipe sizes and materials used. According to the contractor, the underdrains
were installed per the approved design drawings.
•Item VII.A.2: Northern Engineering did not observe construction. Northern Engineering was
unable to verify the perforated and non-perforated sections of the underdrains. According to
the contractor, the underdrains were installed per the approved design drawings.
•Item VII.A.5: Northern Engineering did not observe construction. Northern Engineering was
unable to verify the backfill methods and materials used in the underdrains. According to the
contractor, the underdrains were installed per the approved design drawings.
Accepted 6/5/2018 WL
Aggregate verification resolved through a
TV camera analyisis.
• Item VII.A.6: Northern Engineering did not observe construction. Northern Engineering was
unable to verify if the geotextile liner completely wraps the underdrains. According to the
contractor, the underdrains were installed per the approved design drawings.
• Item XIII.A.3: Landscaping was not completed at the time of Northern Engineering’s site visit.
Please feel free to contact me with any questions you may have.
Thank you,
NORTHERN ENGINEERING
Frederick S. Wegert, PE
Project Engineer
Attachment 1
8/16 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) Volume 1, Section 6.11, 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 Certification - FCSCM Vol.2, Ch.10
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
Hill Pond Residences
April 10, 2018
N/A
N/A
N/A
N/A
N/A
N/A
8/16 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 Certification: 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.
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
8/16 Page 3
4.Outlet Structure Certification
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 Vol.1, Ch.7, Sect.3&4
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.)
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Yes
N/A
Yes
Yes
8/16 Page 4
III.Storm Pipes (aka storm drains) - FCSCM Vol.1, Ch.6, Sec. 4
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.
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 Vol.1, Ch.7, Sec.4.1.3.4
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.
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
8/16 Page 5
V. Storm Drain Inlets - FCSCM Vol.1, Ch.6, Sec. 3
A. Construction/Installation: All storm drain inlets have been constructed in accordance with the
approved construction plans.
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 (or an
equivalent) designation: NO DUMPING – DRAINS TO POUDRE RIVER.
VI.Culverts - FCSCM Vol.2, Ch.9
A. Construction/Installation: All culverts have been constructed and/or installed in accordance with
the approved construction plans.
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. 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.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
N/A
N/A
N/A
N/A
N/A
Yes
No
No
8/16 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.
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
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.
Yes
Yes
No
No
N/A
N/A
N/A
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
8/16 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.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3
A. Construction: All riprap has been installed in the locations and sizes indicated on the approved
construction plans.
XII.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7
A. Construction: All fabric has been installed in the locations and sizes indicated on the approved
construction plans.
1.All fabric was installed per the details on the approved construction plans.
XIII.Post-Construction Site Cleanup - FCSCM Vol.3, Ch.7
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.
XIV.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12
A.The construction of channel drop structures is in accordance with the approved plan both in
location, horizontal dimensions and cross-section.
XV.Certification of LID and Water Quality Facilities - FCSCM Vol.3, Ch.4
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.
N/A
Yes
Yes
N/A
N/A
N/A
N/A
Yes
Yes
Yes
No
Attachment 2
Attachment 3
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OWNER
MACRUM RICHARD E JR
1904 WINTERBERRY WAY
FORT COLLINS,
CO 80526
OWNER
LOCKOOD DEAANNA L
1908 WINTERBERRY WAY
FORT COLLINS,
CO 80526
OWNER
MELBY LYNDA L
1912 WINTERBERRY WAY
FORT COLLINS,
CO 80526
OWNER
COAN MARK A
1916 WINTERBERRY WAY
FORT COLLINS,
CO 80526
OWNER
COLE SUSAN D
1920 WINTERBERRY WAY
FORT COLLINS,
CO 80526
OWNER
MCCOY JOHN H/SHERRY P
1900 S. SHIELDS STREET
FORT COLLINS,
CO 80526
OWNER
MCCOY JOHN H/SHERRY P
1900 S. SHIELDS STREET
FORT COLLINS,
CO 80526
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N:121942.64
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END HORZ.
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N:121700.37
E:190491.39
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BASIN A3-1
INV. OUT=5010.72 (E)
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INV. OUT=5009.93 (W)
FG=5013.57
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SANITARY LINE A2-1
SEE SHEET SS2
SANITARY LINE A2
SEE SHEET SS1
EXI
S
T
I
N
G
4
0
'
R
O
W
GIL
G
A
L
A
D
W
A
Y
WILD
E
R
L
A
N
D
C
O
U
R
T
BASIN RD7
(SEE NOTE #12)
INV. IN=5010.51 (N)
FG=5014.49
BASIN RD9
(SEE NOTE #12)
INV. IN=5010.15 (N)
FG=5014.13
BASIN RD5
(SEE NOTE #12)
INV. IN=5010.03 (W)
FG=5014.13
BASIN RD3
(SEE NOTE #12)
INV. IN=5009.92 (SW)
FG=5014.13
BASIN RD1
(SEE NOTE #12)
INV. IN=5009.80 (S)
FG=5014.01
BASIN RD11
(SEE NOTE #12)
INV. IN=5010.21 (N)
FG=5013.89
BASIN RD8
(SEE NOTE #11)
INV. OUT=5010.82 (S)
FG=5013.58
BASIN RD13
(SEE NOTE #12)
INV. IN=5009.62 (E)
FG=5013.62
BASIN RD6
(SEE NOTE #11)
INV. OUT=5010.83 (E)
FG=5013.54
BASIN RD10
(SEE NOTE #11)
INV. OUT=5010.46 (S)
FG=5013.17
BASIN RD12
(SEE NOTE #11)
INV. OUT=5010.52 (S)
FG=5012.94
BASIN RD4
(SEE NOTE #11)
INV. OUT=5010.49 (NE)
FG=5013.22
BASIN RD14
(SEE NOTE #11)
INV. OUT=5010.36 (W)
FG=5013.13
BASIN RD2
(SEE NOTE #11)
INV. OUT=5010.42 (N)
FG=5013.10
62
.
5
0
L
F
8
"
P
V
C
@
0
.
5
0
%
62
.
5
0
L
F
8
"
P
V
C
@
0
.
5
0
%
62
.
5
0
L
F
8
"
P
V
C
@
0
.
5
0
%
26.50 LF
8" PVC
@ 3.00%
22.97 LF 8" PVC @ 2.50%
31.11 LF 8" PVC @ 2.00%
37.06 LF
8
"
P
V
C
@
2
.
0
0
%
EXISTING 15'
UTILITY EASEMENT
BASIN A2
INV. IN=5008.93 (W)
INV. IN=5008.93 (N)
INV. OUT=5008.93 (S)
FG=5013.60
80.04 LF
6" SLOTTED PVC
@ 0.50%
BASIN A2-1
INV. IN=5009.33 (N)
INV. OUT=5009.33 (E)
FG=5014.02
94
.
0
0
L
F
6
"
S
L
O
T
T
E
D
P
V
C
@
0
.
5
0
%
EXISTING PUBLIC CURB
STOP TO BE REUSED
CONNECT TO EXISTING
1" WATER SERVICE
±22 L
F
1
"
W
.
S
.
±3 LF 1" W.S.
PRIVATE
CURB STOP
±2
3
L
F
3
/
4
"
W
.
S
.
7.60 LF 8" PVC
S37°52'58"E
92.32LF8"PVC
R=300.00'
BEGIN HORZ.
DEFLECTION
N:121763.44
E:190424.47
9' UTILI
T
Y
E
A
S
E
M
E
N
T
9' U
T
I
L
I
T
Y
E
A
S
E
M
E
N
T
88
.
0
0
L
F
6
"
S
L
O
T
T
E
D
P
V
C
@
0
.
5
0
%
BASIN A2-2
INV. OUT=5009.77 (S)
FG=5014.37
ELECTRIC
JUNCTION BOX
ELECTRIC
JUNCTION BOX
N:122032.26
E:190478.43
N:121776.71
E:190523.65
N:121716.31
E:190479.30
N:121658.65
E:190422.93
1" AIR/VAC
N:121858.51
E:190228.70
62.73 LF
8
"
P
V
C
S75°45'1
7
"
W
12.42 LF 8" PVC
S75°45'17"W
AIR/VAC
VENT PIPE
D
W
S
S
S
S
S
S
HYD
S
S
ELECTRIC
JUNCTION BOX
8.24.16
Sheet
Of 18 Sheets
HI
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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:
1.THE SIZE, TYPE AND LOCATION OF ALL KNOWN UNDERGROUND UTILITIES ARE
APPROXIMATE WHEN SHOWN ON THESE DRAWINGS. IT SHALL BE THE
RESPONSIBILITY OF THE CONTRACTOR TO VERIFY THE EXISTENCE OF ALL
UNDERGROUND UTILITIES IN THE AREA OF THE WORK. BEFORE COMMENCING NEW
CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING ALL
UNDERGROUND UTILITIES AND SHALL BE RESPONSIBLE FOR ALL UNKNOWN
UNDERGROUND UTILITIES.
2.ALL WATER AND SEWER CONSTRUCTION SHALL BE PER THE CITY OF FORT COLLINS
STANDARD CONSTRUCTION SPECIFICATIONS LATEST EDITION.
3.ALL WATER FITTINGS AND VALVES ARE ONLY GRAPHICALLY REPRESENTED AND ARE
NOT TO SCALE.
4.UTILITY SERVICES ARE SHOWN IN A SCHEMATIC FASHION ONLY. EXACT LOCATIONS
SHALL BE PER THE REQUIREMENTS OF THE RESPECTIVE UTILITY PROVIDERS, AND
ARE SUBJECT TO CHANGE IN THE FIELD.
5.MAINTAIN 10' HORIZONTAL AND 18" VERTICAL MINIMUM SEPARATION BETWEEN ALL
SANITARY SEWER MAINS, WATER MAINS & SERVICES.
6.REFER TO THE PLAT FOR LOT AREAS, TRACT SIZES, EASEMENTS, LOT DIMENSIONS,
UTILITY EASEMENTS, OTHER EASEMENTS, AND OTHER SURVEY INFORMATION.
7.ALL WATER SERVICES SHALL BE 3/4" MINIMUM. ALL SEWER SERVICES SHALL BE 4".
MINIMUM. SERVICE SIZES TO BE CONFIRMED WITH PLUMBING ENGINEER PRIOR TO
CONSTRUCTION, INCLUDING ANY NECESSARY FIRE FLOW REQUIREMENTS.
8.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.
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 OR 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.
10.IF CURB STOP OR CLEAN-OUT IS LOCATED IN PAVED AREA, CURB STOP OR
CLEAN-OUT SHALL BE TRAFFIC RATED.
11.ALL DRAIN BASINS LOCATED IN LANDSCAPED AREAS SHALL BE 12" Ø BASIN w/ 12"
DOMED GRATE AND 12" SUMP. DRAIN BASINS IN LANDSCAPED AREAS SHALL BE
SURROUNDED WITH 3"-4" ROCK COBBLE FOR MINIMUM OF 1' AROUND BASIN.
12.ALL DRAIN BASINS LOCATED IN PAVER AREAS SHALL BE 12" Ø BASIN w/ 12" STANDARD
GRATE (H-20 RATED).
13.CONTRACTOR TO ENSURE WATER MAIN AND SERVICES ARE INSTALLED A MINIMUM
OF 12-18” BELOW THE BOTTOM OF PERMEABLE PAVER SUBGRADE. REFER TO SHEET
G2 FOR ELEVATIONS.
14. ALL WATER, SEWER, GAS, ELECTRIC, AND TELECOMMUNICATION SERVICES SHOULD
BE STUBBED INSIDE THE FOUNDATION LINES OF EACH LOT PRIOR TO SUBGRADE
EXCAVATION OF PERMEABLE PAVER DRIVE AISLES. IF SERVICES THEMSELVES ARE
NOT ABLE TO BE INSTALLED, SUFFICIENT CONDUIT SHALL BE PLACED AND PROPERLY
MARKED AND DOCUMENTED.
15.CONTRACTOR SHALL CONTACT THE CITY OF FORT COLLINS UTILITIES INSPECTOR
PRIOR TO INSTALLATION OF PAVER AGGREGATES.
NORTH
PROPOSED RIGHT OF WAY
EXISTING WATER MAIN
PROPOSED SUBDRAIN
LEGEND:
W
G
T
E/T/C
EXISTING STORM SEWER ST
PROPOSED ELECTRIC/TELEPHONE/GAS
EXISTING TELEPHONE
EXISTING GAS
SPROPOSED SEWER SERVICE
EXISTING SANITARY SEWER SS
PROPOSED CURB & GUTTER
PROPOSED WATER SERVICE & CURB STOP
PROPOSED FIRE HYDRANT
EXISTING FIRE HYDRANT
EASEMENT LINE
PROPERTY BOUNDARY
SD
PROPOSED LOTLINE
APPROXIMATE GAS METER LOCATION GM
W
PROPOSED WATER MAIN
PROPOSED SANITARY SEWER
PROPOSED STORM SEWER
PROPOSED STREET LIGHT
APPROXIMATE ELECTRIC METER LOCATION EM
/////////////////////////////////////
/
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//
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1
WA
T
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/
W
A
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07
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1
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X
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X
X
X
X
X
X
SS
SS
SS
SS
SS
SS
SS
W
W
W
W
W
T E
E
SSMH A4
STA 12+79.50
N: 121867.31
E: 190234.89
SSMH A3
STA 12+14.36
N: 121883.34
E: 190298.03
SSMH A1
STA 10+00.00
N: 121936.09
E: 190505.79
114.26 L
F
8
"
P
V
C
@
3
.
6
5
%
65.14 LF
8
"
P
V
C
@
2
.
0
0
%
EXISTING 8" SANITARY
SANITARY LINE A3
SEE SHEET SS2
6" SLOTTED
PVC SUBDRAIN
LOT 16
LOT 15
LOT 7
LOT 13
LOT 12
LOT 11
LOT 10
LOT 9
LOT 8
LOT 14
TRACT B
TRACT B
TR
A
C
T
B
SSMH A2
STA 11+14.26
N: 121907.97
E: 190395.05
100.10 L
F
8
"
P
V
C
@
0
.
7
0
%
SANITARY LINE A2
SEE THIS SHEET
TRACT A
N:122032.26
E:190478.43
S
S
HYD
S
S
4995
5000
5005
5010
5015
5020
5025
5030
4995
5000
5005
5010
5015
5020
5025
5030
9+7510+0011+0012+0013+00
EXISTING GROUND
PROPOSED GROUND
SS
M
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A
3
ST
A
1
2
+
1
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.
3
6
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±
IN
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3
9
(
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)
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9
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(
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114.26 LF
8
"
P
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C
@
3
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6
5
%
SS
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9
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9
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(
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(
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100.10 LF 8" PVC @ 0.70%
65.14 LF 8" PVC
@
2
.
0
0
%
SS
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4
ST
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1
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+
7
9
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±
IN
V
.
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T
5
0
0
6
.
1
7
(
E
)
CONTRACTOR TO VERIFY
LOCATION PRIOR TO
CONSTRUCTION.4995
5000
5005
5010
5015
5020
5025
5030
4995
5000
5005
5010
5015
5020
5025
5030
9+75 10+00 11+00 11+50
SS
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9
6
(
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)
IN
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7
6
(
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91.05 LF 8" PVC @ 0.50%
SS
M
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(
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36.05 LF 8" PVC @ 0.50%
STA.=10+12.05
INV.= 5009.99
6" SUBDRAIN
8" WATER
STA.=10+07.00
TOP=5007.85
EXISTING GROUND
PROPOSED GROUND
W
W
W
SS
SS
SS
SS
SS
E
E
E
GIL
G
A
L
A
D
W
A
Y
SSMH A2-2
STA 11+27.10
N: 121784.75
E: 190426.23
36.05 LF
8" PVC
@ 0.50%
LOT 18
LOT 16 LOT 17
LOT 1
LOT 13
LOT 12
LOT 11
LOT 10
TRACT B
LOT 2
SSMH A2
STA 10+00.00
N: 121907.97
E: 190395.05
SSMH A2-1
STA 10+91.05
N: 121819.69
E: 190417.36
91.05 LF 8" PVC @ 0.50%
SANITARY LINE A
SEE THIS SHEET
SANITARY LINE A2-1
SEE SHEET SS2
EXISTING
8" SANITARY
6" SLOTTED
PVC SUBDRAIN
TRACT A
LOT 15
N:121716.31
E:190479.30
N:121658.65
E:190422.93
D
W
SS
S
S
8.24.16
Sheet
Of 18 Sheets
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:
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PL
A
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A
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F
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SA
N
I
T
A
R
Y
S
E
W
E
R
A
&
A
2
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
NORTH
SANITARY SEWER LINE A
PROFILE SCALE:
NORTH
PROFILE SCALE:
SANITARY SEWER LINE A2
PROPOSED RIGHT OF WAY
EXISTING WATER MAIN
PROPOSED SUBDRAIN
LEGEND:
NOTES:
1.THE SIZE, TYPE AND LOCATION OF ALL KNOWN UNDERGROUND UTILITIES ARE
APPROXIMATE WHEN SHOWN ON THESE DRAWINGS. IT SHALL BE THE
RESPONSIBILITY OF THE CONTRACTOR TO VERIFY THE EXISTENCE OF ALL
UNDERGROUND UTILITIES IN THE AREA OF THE WORK. BEFORE COMMENCING NEW
CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING ALL
UNDERGROUND UTILITIES AND SHALL BE RESPONSIBLE FOR ALL UNKNOWN
UNDERGROUND UTILITIES.
2.ALL WATER AND SEWER CONSTRUCTION SHALL BE PER THE CITY OF FORT COLLINS
STANDARD CONSTRUCTION SPECIFICATIONS LATEST EDITION.
3.ALL WATER FITTINGS AND VALVES ARE ONLY GRAPHICALLY REPRESENTED AND ARE
NOT TO SCALE.
4.UTILITY SERVICES ARE SHOWN IN A SCHEMATIC FASHION ONLY. EXACT LOCATIONS
SHALL BE PER THE REQUIREMENTS OF THE RESPECTIVE UTILITY PROVIDERS, AND
ARE SUBJECT TO CHANGE IN THE FIELD.
5.MAINTAIN 10' HORIZONTAL AND 18" VERTICAL MINIMUM SEPARATION BETWEEN ALL
SANITARY SEWER MAINS, WATER MAINS & SERVICES.
6.REFER TO THE PLAT FOR LOT AREAS, TRACT SIZES, EASEMENTS, LOT DIMENSIONS,
UTILITY EASEMENTS, OTHER EASEMENTS, AND OTHER SURVEY INFORMATION.
7.SEWER SERVICES SHALL BE 4" MINIMUM. SANITARY SEWER SERVICE SIZES TO BE
CONFIRMED WITH PLUMBING ENGINEER PRIOR TO CONSTRUCTION.
8.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.
9.IF CLEAN-OUT IS LOCATED IN PAVED AREA, CLEAN-OUT SHALL BE TRAFFIC RATED.
W
G
T
E/T/C
EXISTING STORM SEWER ST
PROPOSED ELECTRIC/TELEPHONE/GAS
EXISTING TELEPHONE
EXISTING GAS
SPROPOSED SEWER SERVICE
EXISTING SANITARY SEWER SS
PROPOSED CURB & GUTTER
PROPOSED WATER SERVICE & CURB STOP
PROPOSED FIRE HYDRANT
EXISTING FIRE HYDRANT
EASEMENT LINE
PROPERTY BOUNDARY
SD
PROPOSED LOTLINE
APPROXIMATE GAS METER LOCATION
W
PROPOSED WATER MAIN
PROPOSED SANITARY SEWER
PROPOSED STORM SEWER
PROPOSED STREET LIGHT
APPROXIMATE ELECTRIC METER LOCATION
1
WA
T
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1
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%
LOT 18
LOT 6
LOT 16
LOT 17
LOT 1
LOT 5
LOT 3
LOT 2
LOT 4
TR
A
C
T
B
SSMH A2-1
STA 10+00.00
N: 121819.69
E: 190417.36
SSMH A2-1.1
STA 10+60.98
N: 121804.69
E: 190358.26
SANITARY LINE A2
SEE SHEET SS1
SANITARY LINE A
SEE SHEET SS1
SANITARY LINE A3
SEE THIS SHEET
EXISTING 8"
SANITARY
6" SLOTTED
PVC SUBDRAIN
6" SLOTTED
PVC SUBDRAIN
LOT 15
TRACT A
N:121776.71
E:190523.65
N:121716.31
E:190479.30
D
S
S
S
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HYD
S
E
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SSMH A3-1
STA 10+91.05
N: 121795.09
E: 190320.43
91.05 LF 8" PVC @ 0.50%
SSMH A3
STA 10+00.00
N: 121883.34
E: 190298.03
6" SLOTTED
PVC SUBDRAIN
LOT 1
LOT 3
LOT 11
LOT 10
LOT 9
LOT 8
TRACT A
LOT 2
TR
A
C
T
B
SANITARY LINE A2-1
SEE THIS SHEET
SANITARY LINE A
SEE SHEET SS1
D
S
SS
4995
5000
5005
5010
5015
5020
5025
5030
4995
5000
5005
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5015
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9+7510+0011+00
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EXISTING GROUND
PROPOSED GROUND
STA.=10+14.97
INV.= 5009.51
6" SUBDRAIN
4995
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9+75 10+00 11+00 11+25
EXISTING GROUND
PROPOSED GROUND
6" SUBDRAIN
STA.=10+12.05
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SS
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TOP=5008.34
8.24.16
Sheet
Of 18 Sheets
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c
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SS2
PL
A
N
A
N
D
P
R
O
F
I
L
E
SA
N
I
T
A
R
Y
S
E
W
E
R
A
2
-
1
&
A
3
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
NORTH
PROFILE SCALE:
NORTH
PROFILE SCALE:
SANITARY SEWER LINE A3SANITARY SEWER LINE A2-1
PROPOSED RIGHT OF WAY
EXISTING WATER MAIN
PROPOSED SUBDRAIN
LEGEND:
NOTES:
1.THE SIZE, TYPE AND LOCATION OF ALL KNOWN UNDERGROUND UTILITIES ARE
APPROXIMATE WHEN SHOWN ON THESE DRAWINGS. IT SHALL BE THE
RESPONSIBILITY OF THE CONTRACTOR TO VERIFY THE EXISTENCE OF ALL
UNDERGROUND UTILITIES IN THE AREA OF THE WORK. BEFORE COMMENCING NEW
CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING ALL
UNDERGROUND UTILITIES AND SHALL BE RESPONSIBLE FOR ALL UNKNOWN
UNDERGROUND UTILITIES.
2.ALL WATER AND SEWER CONSTRUCTION SHALL BE PER THE CITY OF FORT COLLINS
STANDARD CONSTRUCTION SPECIFICATIONS LATEST EDITION.
3.ALL WATER FITTINGS AND VALVES ARE ONLY GRAPHICALLY REPRESENTED AND ARE
NOT TO SCALE.
4.UTILITY SERVICES ARE SHOWN IN A SCHEMATIC FASHION ONLY. EXACT LOCATIONS
SHALL BE PER THE REQUIREMENTS OF THE RESPECTIVE UTILITY PROVIDERS, AND
ARE SUBJECT TO CHANGE IN THE FIELD.
5.MAINTAIN 10' HORIZONTAL AND 18" VERTICAL MINIMUM SEPARATION BETWEEN ALL
SANITARY SEWER MAINS, WATER MAINS & SERVICES.
6.REFER TO THE PLAT FOR LOT AREAS, TRACT SIZES, EASEMENTS, LOT DIMENSIONS,
UTILITY EASEMENTS, OTHER EASEMENTS, AND OTHER SURVEY INFORMATION.
7.SEWER SERVICES SHALL BE 4" MINIMUM. SANITARY SEWER SERVICE SIZES TO BE
CONFIRMED WITH PLUMBING ENGINEER PRIOR TO CONSTRUCTION.
8.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.
9.IF CLEAN-OUT IS LOCATED IN PAVED AREA, CLEAN-OUT SHALL BE TRAFFIC RATED.
W
G
T
E/T/C
EXISTING STORM SEWER ST
PROPOSED ELECTRIC/TELEPHONE/GAS
EXISTING TELEPHONE
EXISTING GAS
SPROPOSED SEWER SERVICE
EXISTING SANITARY SEWER SS
PROPOSED CURB & GUTTER
PROPOSED WATER SERVICE & CURB STOP
PROPOSED FIRE HYDRANT
EXISTING FIRE HYDRANT
EASEMENT LINE
PROPERTY BOUNDARY
SD
PROPOSED LOTLINE
APPROXIMATE GAS METER LOCATION
W
PROPOSED WATER MAIN
PROPOSED SANITARY SEWER
PROPOSED STORM SEWER
PROPOSED STREET LIGHT
APPROXIMATE ELECTRIC METER LOCATION
1
WA
T
E
R
S
E
R
V
I
C
E
R
E
V
/
W
A
T
E
R
P
L
A
N
&
P
R
O
F
I
L
E
BR
R
07
/
1
4
/
1
7
2
WA
T
E
R
L
I
N
E
P
R
O
F
I
L
E
MA
K
08
/
2
3
/
1
7
REC
O
R
D
D
R
A
W
I
N
G