HomeMy WebLinkAboutSite Certifications - 05/31/20188/16 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
The Slav
March 30
B1604165
Yes
Yes
Yes
Yes
Yes
Yes
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
Yes
Yes
Yes
N/A
Yes
Yes
Yes
Yes
Yes
N/A
Yes
See Construction Checklist for details of installation and
photographs. Only surface grades verified in this section.
Concrete pans for both ponds
This is in reference to the bio-swale.
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.)
Yes
N/A
N/A
N/A
N/A
N/A
N/A
Yes
N/A
Yes
Yes
Yes
Yes
N/A
Yes
Yes
No outlet structure for either pond.
orifice 100-year plate
All swales are bio-swales with underdrain
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
Yes
Yes
Yes
Yes
Yes
N/A
N/A
Yes
Yes
Yes
Yes
Yes
Yes
Design below below 0.4%
Utility Plan
Verified by the contractor
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
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Yes
Yes
Yes
Verified by the contractor
Verified by the contractor
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
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
N/A
N/A
N/A
Yes
N/A
Verified by the contractor
Verified by the contractor
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
N/A
N/A
Yes
N/A
N/A
Yes
Yes
Yes
Yes
8/16 Page 8
XVI. Certification and Erosion Control Measures
A. All temporary erosion control measures shall be removed upon stabilization. If at the time of preparing
this certification there are any erosion control measures still remaining on the site, please note them in
the narrative and verify that they need to remain at this time. If in doubt as to the need for any control
measure, please consult with the Erosion Control Inspector at 970-221-6700.
XVII.Statement of Compliance
A. This certification is signed and stamped. By signing this form, the engineer(s) attests that he/she has
visited and observed the site, and to the best of his/her knowledge, the as-built conditions of the drainage
facilities are as described in the above form and in the enclosed as-built plans.
B.Failure to properly disclose all known information could result in the rejection of this certification and
prevent the release of any and all Stormwater Utility permit holds on Building Permits and/or Certificates
of Occupancy within this development.
XVIII.Signature and Stamp by a Colorado-Registered Professional Engineer
Engineer’s contact information:
Name:
Email:
Phone:
Company:
Address:
PE Stamp
Cody Snowdon
Cody@NorthernEngineering.com
970.568.5409
Northern Engineering
301 N. Howes Street
Fort Colllins, CO 80521
03.30.18
Project Title Date:
Project Number Calcs By:
Client
Pond Designation
Invert Elevation
Water Quality Volume
100-yr Detention Volume
Total Pond Volume
D = Depth between contours (ft.)
A1 = Surface Area lower contour (ft2)
A2 = Surface Area upper contour (ft2)
5024.20 0.68 0.00 0.00 0.00 0.0000
5024.30 236.48 0.10 8.33 8.33 0.0002
5024.40 586.60 0.10 39.85 48.18 0.0011
5024.50 924.41 0.10 74.91 123.09 0.0028
5024.60 1247.02 0.10 108.17 231.26 0.0053
5024.70 1531.24 0.10 138.67 369.93 0.0085
5024.80 1707.91 0.10 161.88 531.81 0.0122
5024.90 1829.85 0.10 176.85 708.66 0.0163
5025.00 1930.25 0.10 187.98 896.64 0.0206
5025.10 2018.29 0.10 197.41 1094.06 0.0251
5025.20 2092.98 0.10 205.55 1299.61 0.0298
5025.30 2155.55 0.10 212.42 1512.03 0.0347
5025.40 2205.16 0.10 218.03 1730.06 0.0397
5025.50 2249.63 0.10 222.74 1952.79 0.0448
5025.60 2294.46 0.10 227.20 2179.99 0.0500
5025.70 2385.41 0.10 233.98 2413.97 0.0554
5025.80 2655.16 0.10 251.91 2665.88 0.0612
5025.90 3051.95 0.10 285.13 2951.01 0.0677
5026.00 3593.37 0.10 331.90 3282.90 0.0754
5026.10 4172.72 0.10 387.94 3670.85 0.0843
5026.20 4934.75 0.10 454.84 4125.69 0.0947
5026.30 5927.43 0.10 542.35 4668.04 0.1072
5026.40 7085.41 0.10 649.78 5317.82 0.1221
5026.50 8319.91 0.10 769.44 6087.26 0.1397
5026.60 9663.10 0.10 898.31 6985.58 0.1604
5026.70 11164.34 0.10 1040.47 8026.04 0.1843
5026.80 12724.54 0.10 1193.59 9219.64 0.2117
5026.90 14419.17 0.10 1356.30 10575.94 0.2428 Total Vol
5027.00 16126.03 0.10 1526.46 12102.41 0.2778
5027.10 17617.06 0.10 1686.61 13789.01 0.3166
5027.20 19002.53 0.10 1830.54 15619.55 0.3586
5027.30 20295.93 0.10 1964.57 17584.12 0.4037
5027.40 21549.19 0.10 2091.94 19676.07 0.4517
5027.50 19778.09 0.10 2065.73 21741.80 0.4991
5027.60 24234.35 0.10 2196.85 23938.65 0.5496
5027.70 25234.29 0.10 2473.26 26411.91 0.6063
5027.80 26149.29 0.10 2569.04 28980.96 0.6653
5027.90 27317.44 0.10 2673.12 31654.08 0.7267
Elevation Depth Volume
WQCV NA NA NA
100-yr Detention 5026.86 2.66 0.2310
Overall Detention 5026.86 2.66 0.2310
The Slab June 22, 2016
1033-002 C. Snowdon
North Pond - As-Built
5024.20 ft
NA
0.2310 ac-ft
0.2310 ac-ft
Maxiiimo
North Pond - As-Built Volume
Elevation
(ft)
Surface
Area (ft2)
Incremental
Depth (ft)
Incremental
Vol. (ft3)
Total Vol.
(ft3)
Total Vol.
(ac-ft)
Calc.
Depths
3
**2121AAAADV
Total Required Detention Volume (ac-ft)
Project Title Date:
Project Number Calcs By:
Client
Pond Designation
Invert Elevation
Water Quality Volume
100-yr Detention Volume
D = Depth between contours (ft.)
A1 = Surface Area lower contour (ft2)
A2 = Surface Area upper contour (ft2)
5022.40 36.15 -0.08 -0.96 -0.96 0.0000
5022.50 278.36 0.10 13.83 12.86 0.0003
5022.60 544.70 0.10 40.41 53.28 0.0012
5022.70 1011.42 0.10 76.61 129.89 0.0030
5022.80 1574.70 0.10 128.27 258.16 0.0059
5022.90 1681.95 0.10 162.80 420.96 0.0097
5023.00 1749.80 0.10 171.58 592.54 0.0136
5023.10 1770.42 0.10 176.01 768.55 0.0176
5023.20 1789.91 0.10 178.02 946.57 0.0217
5023.30 1809.26 0.10 179.96 1126.52 0.0259
5023.40 1828.49 0.10 181.89 1308.41 0.0300
5023.50 1847.63 0.10 183.81 1492.22 0.0343
5023.60 1866.69 0.10 185.72 1677.93 0.0385
5023.70 1885.75 0.10 187.62 1865.55 0.0428
5023.80 1904.88 0.10 189.53 2055.08 0.0472
5023.90 1924.11 0.10 191.45 2246.53 0.0516
5024.00 1943.45 0.10 193.38 2439.91 0.0560
5024.10 1962.91 0.10 195.32 2635.23 0.0605
5024.20 1982.48 0.10 197.27 2832.49 0.0650
5024.30 2002.17 0.10 199.23 3031.73 0.0696
5024.40 2022.00 0.10 201.21 3232.93 0.0742
5024.50 2041.96 0.10 203.20 3436.13 0.0789
5024.60 2062.17 0.10 205.21 3641.34 0.0836
5024.70 2082.63 0.10 207.24 3848.58 0.0884
5024.80 2103.34 0.10 209.30 4057.87 0.0932
5024.90 2124.32 0.10 211.38 4269.26 0.0980
5025.00 2145.56 0.10 213.49 4482.75 0.1029
5025.10 2167.12 0.10 215.63 4698.38 0.1079 Total Vol
5025.20 2189.01 0.10 217.81 4916.19 0.1129
5025.30 2211.23 0.10 220.01 5136.20 0.1179
5025.40 2233.78 0.10 222.25 5358.45 0.1230
5025.50 2256.66 0.10 224.52 5582.97 0.1282
5025.60 2279.87 0.10 226.83 5809.79 0.1334
5025.70 2303.41 0.10 229.16 6038.96 0.1386
5025.80 2327.26 0.10 231.53 6270.49 0.1440
5025.90 2351.43 0.10 233.93 6504.42 0.1493
Elevation Depth Volume
WQCV NA NA NA
100-yr Detention 5025.02 2.54 0.1039
Overall Detention 5025.02 2.54 0.1039
Maxiiimo
The Slab July 14, 2016
1033-002 C. Snowdon
South Pond - As-Built
5022.48 ft
0.0000 ac-ft
0.1039 ac-ft
0.1039 ac-ftTotal Pond Volume
South Pond - As-Built Volume
Elevation
(ft)
Surface
Area (ft2)
Incremental
Depth (ft)
Incremental
Vol. (ft3)
Total Vol.
(ft3)
Total Vol.
(ac-ft)
Calc.
Depths
3
**2121AAAADV
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E E
E E E E
E
E
E
E
E
G WW
VA
U
L
T
CA
B
L
E
VA
U
L
T
EL
E
C
CSWW
W W W
GGGG
CT
V
CT
V
CT
V
CT
V
CT
V
CA
B
L
E
VA
U
L
T
EL
E
C
VA
U
L
T
CA
B
L
E
VA
U
L
T
EL
E
C
VA
U
L
T
EL
E
C
VA
U
L
T
EL
E
C
W
W
W
W
W
W
W
W
W
W
W
W
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
W
W
W
SS
S
SS SS SS SS SS SS SS SS SS SS SS SS SS SS
SS
SS
SS
SS
SS
SS
S
W W
W
W
W
W
W
W
W
W
EXISTING 30'
EMERGENCY ACCESS, PUBLIC ACCESS,
UTILITY AND DRAINAGE EASEMENT
TO BE VACATED
EXISTING 30'
EMERGENCY ACCESS, PUBLIC ACCESS,
UTILITY AND DRAINAGE EASEMENT
EXISTING 5' DRAINAGE AND UTILITY EASEMENT TO BE VACATED
EX
I
S
T
I
N
G
1
5
'
U
T
I
L
I
T
Y
AN
D
D
R
A
I
N
A
G
E
E
A
S
E
M
E
N
T
TO
B
E
V
A
C
A
T
E
D
EXISTING 10' PUBLIC
ACCESS EASEMENT
TO BE VACATED
1 1/2 STORY
STUCCO
HOUSE
1 STORY
STUCCO
GARAGE
1 STORY
STUCCO
GARAGE
EX
I
S
T
I
N
G
8
'
D
R
A
I
N
A
G
E
A
N
D
U
T
I
L
I
T
Y
E
A
S
E
M
E
N
T
TO
B
E
V
A
C
A
T
E
D
OWNER: DONALD R. &
LINDA R. WENZEL
OWNER: COLORADO FARM
HOUSE ASSOCIATION
METES & BOUNDS TRACT
OWNER: RIDGE GATE
PARTNERS, LLC
OW
N
E
R
:
R
I
D
G
E
G
A
T
E
PA
R
T
N
E
R
S
,
L
L
C
WE
S
T
P
R
O
S
P
E
C
T
R
O
A
D
(8
1
'
P
U
B
L
I
C
R
O
W
)
EXISTING 6' CITY
OF FORT COLLINS
EASEMENT
TO BE VACATED
BY CITY
N:124076.60
E:191088.12
N:124079.38
E:190825.58
N:123841.14
E:190823.07
N:123838.24
E:191085.48
EXISTING TREE
TO BE REMOVED (TYP.)
EXISTING TREE
TO BE REMAIN
EXISTING TREE
TO BE REMOVED (TYP.)
EXISTING GRAVEL DRIVE
TO BE REMOVED
EXISTING CONCRETE
SLAB FOUNDATION
EXISTING ASPHALT
PARKING LOT
EXISTING CHAIN-LINK FENCE
TO BE REMOVED
EXISTING CHAIN-LINK FENCE
TO BE REMOVED
EXISTING CHAIN-LINK FENCE
TO BE REMOVED
EXISTING 8" DIP WATER
APPROXIMATE LOCATION
EXISTING FIBER OPTIC
EXISTING CABLE
EXISTING CHAIN-LINK FENCE
TO BE REMOVED
EXISTING DRAINAGE
EASEMENT
TO BE VACATED
EXISTING CONCRETE
LANDSCAPE WALL
TO BE REMOVED
EXISTING 3"x3" WOOD POST
TO BE REMOVED
EXISTING GAS
EXISTING 2" VERT. PVC
TO BE REMOVED
EXISTING TREE
TO BE REMOVED (TYP.)
EXISTING SHED
TO BE REMOVED IF NEEDED
EXISTING SHED
EXISTING SMALL TREES
AND SHRUBS
TO BE REMOVED
EXISTING DRAINAGE
EASEMENT
TO BE VACATED
EXISTING GRAVEL DRIVE
± 32 LF EXISTING
VINYL FENCE
TO BE REMOVED
EXISTING 4'
SIDEWALK
TO BE REMOVED
EXISTING FH
EXISTING
ELECTRIC VAULT
TO BE RELOCATED
EXISTING 30" VERTICAL
CURB & GUTTER
EXISTING 3" RESIDENTIAL
METER VAULT AND SERVICE
TO BE RELOCATED
EXISTING 3/4" CURB STOP,
METER PIT, AND SERVICE
TO BE REMOVED AND
ABANDONED AT MAIN
EXISTING 6"
DIP FIRE LINE
CONTRACTOR TO VERIFY
EXTENT OF INSTALLATION
EXISTING 8" DIP WATER LINE
APPROXIMATE LOCATION
LIMITS OF ASPHALT
REMOVAL AREA
AREA OF
ASPHALT &
CONCRETE
REMOVAL
EXISTING CONCRETE
LANDSCAPE WALLLIMITS OF CONCRETE
REMOVAL AREA
EXISTING 8"
SANITARY SEWER
EXISTING 6"
SANITARY SEWER
SERVICE TO BE VARIFIED
EXISTING SANITARY
SEWER MANHOLE
EXISTING SANITARY
SEWER CLEANOUT
EXISTING 8"
SANITARY SEWER
EXISTING 8"
SANITARY SEWER
EXISTING TREE
TO BE REMOVED (TYP.)
± 10 LF EXISTING
TIMBER WALL
TO BE REMOVED
EXISTING
RETAINING WALL
TO BE REMOVED
EXISTING WATER METER
TO BE ABANDONED
AT MAIN
PAVEMENT
REMOVAL AREA
EXISTING
BUILDING
LIMITS OF ASPHALT
REMOVAL AREA
LIMITS OF PAVEMENT
REMOVAL AREA
//////////////////////////
EXISTING 3/4" CURB STOPS,
METER PIT TO BE RELOCATED
LIMITS OF ASPHALT
REMOVAL AREA
EXISTING 8"
WATER LINE
EXISTING 4"
WATER LINE
LIMITS OF CONCRETE
REMOVAL AREA
EXISTING 3
4" SERVICE TO
REMAIN FOR IRRIGATION
EXISTING 3" SERVICE
TO REMAIN
EXISTING CURB & GUTTER
TO BE REMOVED (HATCHED)
EXISTING WATER SPIGOT
TO BE RELOCATED
POTENTIAL WATER AND GAS LOWERING
DUE TO POND CONSTRUCTION
EL
E
C
V.
P
.
X
X
X
S
VA
U
L
T
EL
E
C
C
VA
U
L
T
EL
E
C
X
CTV
E
E
E
E
E
ECT
V
CT
V
CT
V
CT
V
CT
V
CT
V
X
X
X
X
SS SS SS SS SS
SS
SS
S
EXISTING 30'
EMERGENCY ACCESS,
PUBLIC ACCESS,
UTILITY AND DRAINAGE EASEMENT
OWNER: RIDGE GATE
PARTNERS, LLC
OWNER: COLORADO FARM
HOUSE ASSOCIATION
METES & BOUNDS TRACT
WE
S
T
L
A
K
E
S
T
R
E
E
T
EXISTING SMALL TREES
AND SHRUBS
TO BE REMOVED
EXISTING
VINYL FENCE
±28 LF EXISTING
VINYL FENCE
TO BE REMOVED
EXISTING
ELECTRIC VAULT
EXISTING SANITARY
SEWER MANHOLE
EXISTING
31" DRIVE-OVER
CURB & GUTTER
EXISTING
4' SIDEWALK
EXISTING 8"
SANITARY SEWER
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
CONCRETE TO BE
REMOVED TO
NEAREST JOINT
Sheet
Of 16 Sheets
TH
E
S
L
A
B
P
R
O
P
E
R
T
Y
20
0
S
o
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t
C
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i
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C
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8
0
5
2
4
E
N
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I
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E
E
R
N
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I
E
H
T
R
O
N
R
N
PH
O
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:
9
7
0
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2
2
1
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4
1
5
8
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.
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.
c
o
m
09.21.16
C1.00
DE
M
O
L
I
T
I
O
N
P
L
A
N
EX
I
S
T
I
N
G
C
O
N
D
T
I
O
N
S
&
E
LEGEND:
G
T
FIELD SURVEY BY:
SUBSURFACE EXPLORATION BY:
NOTES:
SS
W
X
VAULT
ELEC
CONTROL
IRR
E/TV
TREE PROTECTION NOTES:
NORTH
MA
T
C
H
L
I
N
E
-
S
E
E
B
E
L
O
W
MA
T
C
H
L
I
N
E
-
S
E
E
A
B
O
V
E
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what's below.
before you dig.Call
R
3
RE
C
O
R
D
D
R
A
W
I
N
G
S
MC
R
06
.
0
6
.
1
7
RECO
R
D
D
R
A
W
I
N
G
TO REMAIN
TO REMAIN
FIRE LANE PREVIOUSLY
INSTALLED TO
BUILDING FOOTPRINT
3
3
X
X
X
X
X
X
VA
U
L
T
CA
B
L
E
VA
U
L
T
CA
B
L
E
X
X
X
X
X
X
X
X
X
X
X
X
X
XXXX
X
OH
E
OH
E
OH
E
OH
E
OH
E
OH
E
VA
U
L
T
CA
B
L
E
VA
U
L
T
CA
B
L
E
UD UD UD UD UD UD UD UD UD UD UD UD
UD UD
UD
UD
UD
UD
UD
UD
UD
UD
UD
UD
UD
UD
UD UD UD UD UD UD UD UD UD
WE
S
T
P
R
O
S
P
E
C
T
R
O
A
D
(8
1
'
P
U
B
L
I
C
R
O
W
)
OWNER: COLORADO FARM
HOUSE ASSOCIATION
METES & BOUNDS TRACT
OWNER: RIDGE GATE
PARTNERS, LLC
OW
N
E
R
:
R
I
D
G
E
G
A
T
E
PA
R
T
N
E
R
S
,
L
L
C
N:124076.60
E:191088.12
N:124079.38
E:190825.58 N:123841.14
E:190823.07
N:123838.24
E:191085.48
DETENTION
POND N
DETENTION
POND S
LO
D
LO
D
LO
D
LO
D
LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD
LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD
LOD
LOD
LOD LOD
LOD
LOD
LO
D
LOD
LO
D
LOD
LO
D
LO
D
LOD
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
LO
D
7.4%1.3%1.8%0.5%
3.3%
LO
D
LO
D
LOT 2
LOT 1
1
2
FFE=30.17
(26
.
4
3
)
(27.44)
25
.
4
6
27.6
9
(27.51
)
28.07
28.0
1
27.73
26.1
1
26.2
2
26.3
8
26.5
8
25.6
3
25.9
4
26.0
0
27.5
4
26.1
2
26
.
1
8
26.26
26.
2
4
25.9
4
26.43
26.00
26.06
26.14
26.1
2
25.8
2
26.41
26.2
9
26.5
7
26.8
7
26.93
27.02
26.9
627.2
1
27.28
27.26
27.1
9
26.45
27.8
5
27.80
27.74
27.7
8
27.72
28.0
4
27.3
7
27.1
1
27.0
2
27.0
4
27.0
4
27.3
0
27.8
7
27.8
6
27.8
6
27.8
6
27
.
5
2
27.75
27
.
7
3
27
.
5
8
27.52
27.5
2 27.7
2
27.84
27
.
9
2
27.6
3
28
.
7
2
28.0
9
28.0
0
28.3
2
27.5
4
27.2
8
27.22
27.22
27.2
8
27.5
4
28.0
428.1
5
27.
0
2
25.4
0
25
.
9
5
25.
9
9
25.
7
4
22.87
24
.
1
2
26.8
1
24.5
0
25.50
25.9
9
25
.
7
1
28.00
27.92
28.00
26.
7
7
26
.
7
9
26
.
9
5
28
.
0
0
28.6
5
28.7
6
28.97
27
.
9
9
28.15 26
.
7
6
25.81
24.85
25.7
4
26.0
3
25.94
28.11
30.1
7
27.9
2
28.37
28.3
2
24.18
(27.5
5
)
(27.7
1
)
28
.
0
9
29.2
1
28.9
7
(2
7
.
3
3
)
(26
.
7
3
)
27.57
26.
8
2
27
.
9
5
27.
8
9
27
.
3
8
28.
0
6
27.1
0
28
.
0
2
27.73
(27.9
0
)
25
.
1
1
25.2
5
25.13 24.5
7
24.66
28.4
7
28.
1
5
28.3
7
27.
1
327.0
5
26.4
4
26
.
2
4
24.5
2
24.3
0
28
.
8
3
28.2
3
28.9
2
28.72
28.79
28.67
28.60
28.66
29.0429.30
23.8
3
23.
4
0
23.1
8
(2
2
.
1
1
)
(22
.
1
8
)
(22.10)
26.61
26.28
22
.
7
2
26
.
6
1
22
.
5
9
26.61
24.0
3
22.3
4
22
.
6
3
26
.
6
1
26.6
1
28.9
3
(2
5
.
4
8
)
(2
5
.
3
2
)
(26
.
4
4
)
(27
.
4
1
)
27.8
5
27.86
27.5
4
28.4
4
27
.
2
3
28.8
4
28.3
4
28.1
4
28.21
24
.
4
9
25.8
7
25.9
0
26.1
5
26.1
7
28.44
27.0
7
27.9
9
27.8
5
27
.
4
9
(28
.
0
7
)
30.10
29.9
0
27.1
2
27.04
27.2
1
23.90
23
.
8
2
23.9
8
24.7
8
24.7
1
24.8
6
26.4
2
29.3
3
28.8
3
24.7
1
28.0
0
28.0
0
28.0
0
25
.
6
4
26.24
28.0
0
27.0
0
27.0
0
28.00
28.0
0
29.0
0
29.4
3
29.6
5
29
.
1
0
29
.
1
6
28.3
2
27.65
27.5
5
25.92
24.1
0
24.11
24.22
24.1
6
22.53
29.6
0
29
.
6
6
24.8
9
24.8
4
26.1
3
26.0
0
24.17
24
.
2
8
23.15
0.5%
26.5
7
0.
5
%
28.1
1
0.9%1.6%
27.7
0
25.7
4
24.1
5
24.0
7
23.40
24.40
24.3
2
23.65
24.6
5
24.5
7
23.90
24.2
3
24.4
8
24.7
3
5.9%6.8%
29.6
2
28
.
8
2
29.5
8
22.2
3
28.48
28
.
3
0
27.68
27.60
27.57 27.89
26
.
6
4
26
.
8
7
23
.
5
7
SG
23
.
5
6
SG
23.29
SG 23.31
SG
24.05SG
24.06
SG
23.
9
7
SG
23.96SG
28
.
2
9
28.
1
4
29.79
29.4
5
29.4
7
29.5
5
29.9
3
30.1
7
29.9
9
30.1
7
28.4
8
23.9
4
28.0
0
1
EMERGENCY ACCESS, PUBLIC ACCESS,
UTILITY AND DRAINAGE EASEMENT
EXISTING 30'
EMERGENCY ACCESS, PUBLIC ACCESS,
UTILITY AND DRAINAGE EASEMENT
PROPOSED 5' DRAINAGE
AND UTILITY EASEMENT
PR
O
P
O
S
E
D
8
'
D
R
A
I
N
A
G
E
A
N
D
U
T
I
L
I
T
Y
E
A
S
E
M
E
N
T
PROPOSED DRAINAGE
EASEMENT
PROPOSED
DRAINAGE
EASEMENT
BIO-SWALE
ORIFICE PLATE
INFLOW
CURB & GUTTER
OUTFALL
CURB & GUTTER
OUTFALL
CURB & GUTTER
OUTFALL
CURB & GUTTER
OUTFALL
CURB & GUTTER
OUTFALL
CURB & GUTTER
OUTFALL
CURB & GUTTER
OUTFALL
CURB & GUTTER
ROOF LEADER
(TYP.)
CLEANOUT
TRASH
ENCLOSURE
RAMP
RAMP
RAMP
INFLOW
CURB & GUTTER
INFLOW
CURB & GUTTER
TIE TO EXISTING
TIE TO EXISTING
TIE TO EXISTING
EXISTING 30"
VERTICAL CURB
& GUTTER
STORM DRAIN
SOFT PAN
CURB CUT
4' CONCRETE PAN
CURB CUT
CURB CUT
CURB CUT
CURB CUT
2' CONCRETE PAN
4' CONCRETE PAN
SOUTH POND
OUTLET PIPE
1' CONCRETE PAN
RETAINING WALL
TOP OF WALL = 5026.60
(RE: LANDSCAPE)
FENCE
STORM DRAIN
FENCE
6" PERFORATED
UNDER DRAIN
TOP OF WALL
EL=5028.00
LANDSCAPE
WALL
6" PERFORATED
UNDER DRAIN
2' CONCRETE PAN
DRY WELL
BIO-SWALE
STORMTECH
VAULTS
6" PERFORATED
UNDER DRAIN
STORM TECH
VAULTS
CURB CUT
DOME GRATE
DOME GRATE
DRAIN BASIN
DRAIN BASIN
CURB CUT
OVERFLOW WEIR
FOR STORM ABOVE
WATER QUALITY EVENT
2' CURB CUT
PROPOSED 10'
DRAINAGE EASEMENT
RETAINING WALL
TOP OF WALL = 5028.00
(RE: STRUCTURAL)
RAMP
PROPOSED ACCESS EASEMENT
CONCRETE
COLLAR
OVERFLOW WEIR
FOR STORM ABOVE
WATER QUALITY EVENT
2' CURB CUT
END STRUCTURAL
WALL SECTION
DRAIN BASIN
2
(26
.
4
6
)
(2
5
.
8
3
)
(25
.
9
5
)
(26
.
0
3
)
27.20
27.2
0
25.26
25.2
6
27.58
28.66
29.24
28.75
28.75
33.2%25.0%
20.7%
30.7%
V.
P
.
X
X
C
XX
X
X
X
UD UD UD
UD UD UD
OWNER: RIDGE GATE
PARTNERS, LLC
OWNER: COLORADO FARM
HOUSE ASSOCIATION
METES & BOUNDS TRACT
WE
S
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L
A
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LOD LOD LOD
LOD LOD LOD
LO
D
(23.38)
(23
.
5
3
)
(2
4
.
9
0
)
(23
.
6
9
)
23
.
6
0
23.40
(23
.
7
6
)
(23
.
4
8
)
23.
9
1
23.
9
5
23.7
3
23.63
23.
6
0
23.
5
5
23.7
1
EXISTING 30'
EMERGENCY ACCESS,
PUBLIC ACCESS,
UTILITY AND DRAINAGE EASEMENT
BIO-SWALE
2' SIDEWALK CHASE
TIE TO EXISTING
TIE TO EXISTING
EXISTING 31"
DRIVE-OVER
CURB & GUTTER
6" PERFORATED
UNDER DRAIN
2' CONCRETE PAN
2 (24.9
6
)
29.99
30.0
9
30.0
9
30.0
9
29.52
28.98
28.5
3
30.09
28
.
5
0
30.17
28.6
4
28.2
0
28.2
8
28.2
2
28.2
2
28.59
30.1
3
28.7
5
CHEEK WALL & RAILING
(RE: LANDSCAPE)
2.0%2.0%
28.53
30.06
29.00
29.54
3-6" RISERS
2.0%
3.1%3.1%
CHEEK WALL & RAILING
(RE: LANDSCAPE)
29.6
5
29.5
2
29.4
3
29
.
1
4
29.0
0
29
.
3
0
29
.
1
5
29.5
8
29.6
7
29.
9
2
30
.
1
7
30.1
7
30.0
8
29.9
5
29.9
0
30.03
30.1
7
RAMP
LANDING
LANDING
WARPED
CONCRETE
2.
0
%
2.
0
%
2.
1
%
5.
5
%
7.
9
%
0.
8
%
0.
8
%
5.
5
%
2.0%
2.1%
2.0%2.0%4.6%
2.0%
4.7%2.0%2.0%
C4.00
GR
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Of 16 Sheets
TH
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c
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09.21.16
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what's below.
before you dig.Call
R
LEGEND:
NOTES:
LOD
FIELD SURVEY BY:
NORTH
MA
T
C
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L
I
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E
-
S
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E
B
E
L
O
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MA
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E
-
S
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E
A
B
O
V
E
1 GRADING DETAIL
SCALE: 1" = 5'
2 GRADING DETAIL
SCALE: 1" = 5'
1
NO
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T
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P
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N
D
O
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F
A
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CN
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02
.
2
0
.
1
7
2
RE
M
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A
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F
1
2
"
L
A
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C
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W
A
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CN
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05
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1
6
.
1
7
3
RE
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12
.
1
3
.
1
7
RECO
R
D
D
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A
W
I
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POND OUTLET S1
INV. OUT=5022.34 (S)
FG=5022.34
UP
D.
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D.
S
.
R.
D
.
D.
S
.
D.
S
.
D.
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D.
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D.
S
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D.
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D.
S
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R.
D
.
D.
S
.
X
X
X
X
X
X
VA
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HYD
VA
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B
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GA
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U
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CA
B
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U
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C
W
X
X
X
X
X
X
X
X
X
X
X
X
X
XXXX
X
OH
E
OH
E
OH
E
OH
E
OH
E
OH
E
TR
A
F
F
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VA
U
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U
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G WW
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B
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CSWW
W W W
GGGG
CT
V
CT
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CT
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CT
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CT
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VA
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VA
U
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CA
B
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W
W
W
W
W
W
W
W
W
W
W
W
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
FO
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
CT
V
SS
S
SS SS SS SS SS SS SS SS SS SS SS SS SS SS
SS
SS
SS
SS
SS
SS
S
W W
W
W
W
W
W
W
W
WE
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(8
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)
OWNER: DONALD R. &
LINDA R. WENZEL
OWNER: COLORADO FARM
HOUSE ASSOCIATION
METES & BOUNDS TRACT
OWNER: RIDGE GATE
PARTNERS, LLC
OW
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88.13 LF 6" DIP F.S.
37
.
7
1
L
F
6
"
D
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F
.
S
.
47.32 LF 3" W.S.
19
.
3
3
L
F
3
"
W
.
S
.
EXMH A2
INV. IN=5021.59 (SW)
INV. OUT=5021.39 (N)
FG=5028.02
EX SANITARY SERVICE A4
INV. OUT=5024.15 (NE)
FG=5030.07
EXCO A3
EXISTNG 64.14 LF 8" PVC @ 2.00%
10" DOME GRATE B3-1
INV.=5024.54
FG=5026.24
100.
2
0
L
F
8
"
P
V
C
@
0
.
2
0
%
FES A8
FG=5025.46
DRAIN BASIN A3
INV.=5022.84
FG=5025.74
DRAIN BASIN A5
INV.=5023.62
FG=5029.03
PIPE END A1
FLUSH TO WALL
GROUT PENETRATION TO
ENSURE WATER TIGHT
FG=5022.56
31
.
4
9
L
F
12
"
P
V
C
@
0
.
5
0
%
13
1
.
5
5
L
F
1
2
"
P
V
C
@
0
.
5
0
%
67
.
1
9
L
F
1
2
"
P
V
C
@
0
.
5
0
%
18.28 LF
12" PVC
@ 5.00%
6.60 LF 8" HDPE @ 0.50%
20.00 LF 6" PVC @ 2.00%
EXSTING SANITARY SERVICE A1
INV. OUT=5021.21 (W)
FG=5025.36
DETENTION
POND
N:124076.60
E:191088.12
N:124079.38
E:190825.58 N:123841.14
E:190823.07
N:123838.24
E:191085.48
DETENTION
POND S
EX
I
S
T
N
G
6
4
.
1
4
L
F
8
"
P
V
C
@
2
.
0
0
%
EXISTNG 53.31 LF 8" PVC @ 1.50%
EXISTNG 318.04 LF 8" PVC @ 1.50%
10" DOME GRATE B2-1
INV.=5024.25
FG=5025.64
24'
PROPOSED EMERGENCY ACCESS,
PUBLIC ACCESS,
UTILITY AND DRAINAGE EASEMENT
EXISTING 30'
EMERGENCY ACCESS, PUBLIC ACCESS,
UTILITY AND DRAINAGE EASEMENT
PROPOSED 5' DRAINAGE AND UTILITY EASEMENT
PROPOSED 15' UTILITY
AND DRAINAGE EASEMENT
PR
O
P
O
S
E
D
8
'
D
R
A
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N
A
G
E
A
N
D
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E
A
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E
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175.92 LF 6" PERF. PVC @ 0.50%
13.42 LF 6" PVC @ 2.00%
DRY WELL B-2
INV. IN=5020.39 (E)
INV. IN=5020.39 (N)
INV. IN=5020.39 (S)
FG=5023.15
GRATE INLET A2
INV.=5022.70
FG=5024.49
DRAIN BASIN A4
INV.=5023.50
FG=5027.70
23.25 LF
12" PVC
@ 0.50%
10" DRAIN BASIN B1
W/ 8' SOLID GRATE
INV.=5023.13
FG=5028.22
60
.
5
8
L
F
8
"
P
V
C
@
0
.
2
0
%
9.37 LF 3" W.S.
MONITORING WELL B-4
INV.=5023.36
FG=5024.88
8.53 LF
6" PERF. PVC
@ 0.50%
MONITORING WELL A3-1.1
INV. IN=5022.92 (W)
INV. OUT=5022.92 (E)
FG=5025.27
MONITORING WELL A3-1.2
INV. OUT=5024.67 (E)
FG=5027.20
MONITORING WELL B2
INV. IN=5021.65 (S)
INV. IN=5021.65 (N)
INV. OUT=5020.66 (W)
FG=5023.82
MONITORING WELL B4
INV. OUT=5024.85 (N)
FG=5027.02
MONITORING WELL A6-2
INV. OUT=5024.05 (S)
FG=5028.42
29.31 LF 12" PVC @ 0.50%
VERTICAL DEFLECTION B3
INV. IN=5022.53 (S)
INV. OUT=5022.53 (N)
FG=5024.70
22-1/2° BEND B-3
INV. IN=5021.27 (S)
INV. OUT=5021.27 (N)
FG=5023.95
13.47 LF
6" PERF. PVC
@ 15.51%
46.45 LF 6" PERF. PVC @ 5.00%
CONCRETE COLLAR B
FG=5022.92
GRATED INLET A3-1
INV. IN=5022.88 (W)
INV. OUT=5022.88 (S)
FG=5024.85
PROPOSED 10'
DRAINAGE EASEMENT
32.47 LF
6" PVC
@ 2.00%
36.01 LF 6" PVC @ 2.00%
23.47 LF
6" PVC
@ 2.00%
18" DRAIN BASIN B3-2
18" STANDARD GRATE
INV. IN=5024.07 (N)
INV. OUT=5024.07 (E)
FG=5027.79
10" DRAIN BASIN B2
18" STANDARD GRATE
INV. IN=5023.27 (NW)
INV. OUT=5023.25 (E)
FG=5026.85
TYP.
20.96 LF 6" PVC @ 1.00%
46.34 LF 6" PERF. PVC @ 0.20%
EXISTING 8"
DIP WATER
APPROXIMATE
LOCATION
EXISTING CABLE
PROPOSED DRAINAGE
EASEMENT
EXISTING FH
CONNECT TO EXISTING
6" FIRE LINE
EXISTING 4"
WATER LINE
APPROXIMATE
LOCATION
LIMITS OF ASPHALT
REMOVAL AREA
AREA OF
ASPHALT &
CONCRETE
REMOVAL
3" WATER
SERVICE
6" DIP
FIRE SERVICE
EXISTING
CABLE VAULT
(TO BE RELOCATED)
EXISTING
FIBER OPTIC
EXISTING
GAS LINE
MARKER
PROPOSED
TRANSFORMER
PROPOSED
ELEC. SERVICE
PROPOSED
ELEC. METER
PROPOSED
GAS METER
PROPOSED
GAS SERVICE
PROPOSED
BIO-SWALE
PROPOSED
CURB CUT
PROPOSED
SOFT PAN
PROPOSED 4'
CONCRETE PAN
PROPOSED 4'
CONCRETE PAN
PROPOSED
CURB CUT
PROPOSED
CURB CUT
PROPOSED 1'
CONCRETE PAN
PROPOSED 2'
CONCRETE PAN
PROPOSED
SOFT PAN
PROPOSED ACCESS
EASEMENT
AREA OF
ASPHALT &
CONCRETE
REMOVAL
PROPOSED 2'
CONCRETE PAN
CONNECT TO EXISTING 3
4"
IRRIGATION TAP
AREA OF
ASPHALT &
CONCRETE
REMOVAL
PROPOSED
CURB CUT
PROPOSED
CURB CUT
UNDERGROUND
DETENTION
STORMTECH
SC-160 CHAMBER
UNDERGROUND DETENTION
STORMTECH SC-160 CHAMBER
PROPOSED
BIO-SWALE
RELOCATED 3
4" METER
AND CURB STOP
RELOCATED 3" METER VAULT
AND CURB STOP
CONNECT TO EXISTING 3"
WATER SERVICE
PROPOSED
ELEC. SERVICE
LOT 2
LOT 1
PROPOSED
LOT LINE
PROPOSED ACCESS EASEMENT
21.04 LF 6" PVC @ 0.20%
45° BEND B3-6
FG=5026.81
26.09 LF 6" PVC @ 2.00%
45° BEND B3-7
INV.=5024.33
FG=5027.66
15.83 LF 6" PVC @ 2.00%
RD CONNECTION B3-R4
INV.=5024.64
FG=5028.44
18" DRAIN BASIN B3-5
18" STANDARD GRATE
INV. IN=5023.85 (S)
INV. IN=5023.85 (W)
INV. OUT=5023.85 (E)
FG=5026.90
DS CONNECTION B3-R3
INV. OUT=5024.50 (N)
FG=5028.31
18" DRAIN BASIN B3-3
18" STANDARD GRATE
INV. IN=5024.00 (W)
INV. IN=5024.00 (S)
INV. OUT=5024.00 (E)
FG=5027.51
RD CONNECTION B3-R1
INV. OUT=5024.72 (N)
FG=5029.32
29.62 LF
6" PVC
@ 2.00%
18" DRAIN BASIN B3-4
18" STANDARD GRATE
INV. IN=5023.93 (W)
INV. IN=5024.93 (S)
INV. OUT=5023.93 (E)
FG=5027.18
DS CONNECTION B3-R2
INV. OUT=5025.53 (N)
FG=5028.40
57.24 LF
6" PVC
@ 2.00%
DS CONNECTION A7-2.1
INV. OUT=5026.61 (W)
FG=5030.02
RELOCATED
WATER SPIGOT
POTENTIAL
WATER SERVICE/
GAS LOWERING
INSPECTION
PORT (TYP.)
PIPE END S
INV. IN=5022.23 (N)
FG=5022.23
21.54 LF
8" PVC
@ 0.50%
JUNCTION B3
INV. IN=5023.29 (W)
INV. OUT=5023.29 (SE)
FG=5026.68
133.21 LF 6" PERF. PVC @ 0.20%
JUNCTION B4
INV. OUT=5023.55 (E)
FG=5027.61
18" NYLOPLAST BASIN B2-2
18" STANDARD GRATE
INV. IN=5024.05 (N)
FG=5026.74
4.21 LF 12" PVC @ 0.20%
12"x6" WYE A6
INV. IN=5023.95 (W)
INV. IN=5023.95 (NW)
INV. OUT=5023.95 (E)
FG=5027.73
JUNCTION A6-1
INV. IN=5023.96 (N)
INV. OUT=5023.96 (SE)
FG=5027.67
3.26 LF 6" PVC @ 0.20%
WATER QUALITY INLET A8
INV. IN=5024.55 (NW)
INV. IN=5024.55 (N)
INV. OUT=5023.96 (E)
FG=5027.65
5.52 LF 6" PVC @ 0.20%
INSPECTION
PORT (TYP.)
INSPECTION
PORT (TYP.)
30'
PROPOSED EMERGENCY ACCESS,
PUBLIC ACCESS,
UTILITY AND DRAINAGE EASEMENT
BASIN ON2
INV. IN=5024.09 (W)
INV. OUT=5024.09 (N)
FG=5026.19
ORIFICE PLATE ON3
INV. OUT=5024.12 (E)
FG=5024.12
FES ON1
FG=5023.94
28.91 LF
12" HDPE
@ 0.50%
6.54 LF
12" HDPE
@ 0.50%
PROPOSED UTILITY
EASEMENT
H2
O
WW
WCS
UD UD UD UD UD UD UD UD UD UD UD UD
F W
E E E E E E E E E E E E E
E
E
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UD UD
E
E
IR
UD
UD
UD
UD
UD
UD
G
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GGGGG
UD
UD
UD
UD
UD
UD
UD UD UD UD UD UD UD UD UD
EL
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P
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X
X
S
VA
U
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C
C
VA
U
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CTV
E
E
E
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ECT
V
CT
V
CT
V
CT
V
CT
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CT
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X
X
X
X
SS SS SS SS SS
SS
SS
S
OWNER: RIDGE GATE
PARTNERS, LLC
OWNER: COLORADO FARM
HOUSE ASSOCIATION
METES & BOUNDS TRACT
WE
S
T
L
A
K
E
S
T
R
E
E
T
EXMH A (DROP MH)
INV. IN=5015.82 (S)
INV. IN=5012.41 (W)
INV. OUT=5012.41 (E)
FG=5023.77
EXISTING 30'
EMERGENCY ACCESS,
PUBLIC ACCESS,
UTILITY AND DRAINAGE EASEMENT
89.56 LF 6" PERF. PVC @ 0.50%
89.56 LF 6" PERF. PVC @ 0.50%
MONITORING WELL B1
INV. OUT=5022.10 (S)
FG=5023.55
MONITORING WELL B-1
INV. OUT=5020.84 (S)
FG=5023.60
EXISTING
ELECTRIC VAULT
EXISTING
ELECTRIC VAULT
EXISTING
CABLE VAULT PROPOSED
ELEC. SERVICE
PROPOSED 2'
SIDEWALK CHASE
EXISTING
SANITARY SEWER
UD UD UD
E E E E E E
UD UD UD
NOTES:
LEGEND:
W
G
CTV
E
W
SS
UD
NORTH
C3.00
UT
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P
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Sheet
Of 16 Sheets
TH
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20
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r
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e
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g
i
n
e
e
r
i
n
g
.
c
o
m
09.21.16
CALL UTILITY NOTIFICATION CENTER OF
COLORADO
Know what's below.
before you dig.Call
R
MA
T
C
H
L
I
N
E
-
S
E
E
B
E
L
O
W
MA
T
C
H
L
I
N
E
-
S
E
E
A
B
O
V
E
1
NO
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T
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P
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N
D
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AS-BUILT EXHIBIT
THE SLAB PROPERTY
LOTS 1 & 2, OBSERVATORY PARK SUBDIVISION, CITY OF FORT COLLINS, COUNTY OF LARIMER, STATE OF COLORADO
4025 Automation Way, Suite C4
Fort Collins, CO 80525
970-232-9645
www.WashburnSurveying.com
Sheet 1 of 1 Project #: 2017-009 Date: Dec. 6, 2017 Scale: 1"=20' Drawn: CDBSheet 1 of 1 Project #: 2017-009 Date:
ELEVATIONS SHOWN ARE FROM AN AS-BUILT SURVEY OF THE SITE
PERFORMED ON DECEMBER 01 AND DECEMBER 12 AND 28, 2017
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CHAD R. WASHBURN
COLORADO LICENSED PROFESSIONAL LAND SURVEYOR 37963
FOR AND ON BEHALF OF WASHBURN LAND SURVEYING, LLC.
970.232.9645
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12/15 Page 1
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.
I.Compaction
A.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.The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction
Standards (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. Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3
A.The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans.
B.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.
C.The riprap is the gradation shown on the approved construction plans with a D50 of .
D.The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown.
E.The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.)
IV. Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7
A.All fabric was installed per manufacturer’s specifications.
V. Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12
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 and at the end of flared end sections.)
9"
Yes
Yes
Yes
Yes
Yes
Yes
N/A
N/A
Yes