HomeMy WebLinkAboutDrainage Reports - 10/21/1993STORMWATER REVIEW COPY
Final Approved.. _ FROPFA 01F
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DRAINAGE INVESTIGATION
1
A PROPOSED COMMERCIAL FACILITY
TO BE LOCATED ON
LOT 12, CREGER, PLAZA - 2ND REPLAT
FORT COLLINS, COL 0RADO
Prepared for
Delgado and Delgado
7828 So. County Road #3
Fort Collins, Colorado 80525
July 1993
REVISED SEPIEMBER 1993
Project No. GRD-110-93
PREPARED 13Ys
MESSNER Engineering Associates
150 East 29th Street, Suite 225
Loveland, Colorado 80538
Telephone: (303) 663-2221
Civil and Environmental Engineering Consultants
Engineering Associates
July 27, 1993
REVISED 9-24-93
Project No. GRD-110-93
Mr. Peter Delgado, P.L.S.
Delgado and Delgado
7828 S. County Road #3
Fort Collins, Colorado 80525
Dear Mr. Delgado,
The enclosed report represents the revisions of the Drainage Investigation for the
proposed commercial facility to be located on Lot 12 of the Creger Plaza - 2nd Replat in the
City of Fort Collins, Larimer County, Colorado. These revisions were requested by the
City of Fort Collins staff.
This investigation was based upon the proposed site development plan and plat; proposed
site grading plan; on -site observations; and available topographic information. The
investigation was performed in accordance with the criteria established in the City of
Fort Collins "Storm Drainage Design Criteria and Construction Specification Standards"
manual and incorporates the comments and concerns expressed during pre -design
conversation with the City's staff.
Thank you for the opportunity to be of service to you. If you should have any questions,
please feel free to contact this office.
Respec ly Submitted,
Dennis R. Messner, P.E.
MESSNER Engineering Associates
DRWmkm
J
Enclosures
Civil and Environmental Engineering Consultants
150 E. 29th Street, Suite 225 Loveland, Colorado 80538 Telephone: (303) 663-2221
September 15,1993
Project No. GRD-110-93
Mr. Glen D. Schlueter
StormWater Utility
City of Fort Collins
235 Mathews
P. O. Box 580
Fort Collins, Colorado 80522 - 0580
Re: Lot 12 Creger Plaza - 2nd Replat, Fort Collins, Colorado
Dear Mr. Schlueter,
The subject project's estimated erosion control security amount has been determined to
be the minimum amount required by the City of Fort Collins. Therefore, an amount of
$1,000.00 should be included for the erosion control guarantee along with any other
surety requirements that are a part of the City's "Developer's Agreement."
If you should have any questions or desire additional information, please feel free to
contact this office.
Respectfully Submitted,
MESSNER Engineering Associates
Dennis R. Messner, P.E.
DRM/mkm
cc: Mr. Peter Delgado, Delgado and Delgado
Mr. Gene Buck, Mountain Plains Constructors, Inc.
Civil and Environmental Engineering Consultants
150 E. 29th Street, Suite 225 Loveland, Colorado 80538 Telephone: (303) 663-2221
Letter of Transmittal
Table of Contents
Scope
Site Description
Existing Conditions
Proposed Development
Erosion Control Measures
Conclusions and Recommendations
i
ii
2
Vicinity Map
Existing Conditions Exhibit
Grading & Drainage Exhibit
Calculations
Drainage Summary
ll
The following report represents the results of a drainage investigation for a proposed
commercial facility to be located on a parcel of land situated in the Northeast Quarter of
Section 35, Township 7 North, Range 69 West of the 6th P.M., Larimer County, Colorado.
The site description is: Lot 12 of Creger Plaza - 2nd Replat in the City of Fort Collins. The
investigation was performed for Delgado and Delgado. The purpose of this investigation
is to determine the effects of the proposed development on the area's existing drainage
conditions and to determine the improvements, if any, and the appropriate sizing for
proposed improvements so that it may be incorporated with the construction of the
project. The conclusions and recommendations presented in this report are based upon
the proposed site development plan and plat; proposed site development construction
plans; on -site observations; and the available topographic information. The analysis was
performed in accordance with the City of Fort Collins "Storm Drainage Design Criteria
and Construction Standards" manual.
SITE DESCRIPTION
The site is rectangular and contains approximately 0.746 acres. The site's East-West
dimension, including the westerly half of the Mason Street right-of-way, is
approximately 325 feet and its North -South dimension is 100 feet. The site abuts the
easterly right-of-way of the Burlington Northern Railroad and the westerly right-of-way
of South Mason Street. The site is located on the drainage basin boundary between the
FOOTHILLS BASIN and the MAIL CREEK BASIN.
The site is presently vacant. The ground surface has been roughly graded and native
vegetation is sparse to moderate across the site. The site slopes from Northwest to
Southeast toward South Mason Street at rates varying from 2% to 0.5%. The site does
receive a minor amount of run-off from the property to the North but will'not once the site
has been developed. The run-off generated on the adjacent railroad right-of-way flows
easterly onto the site. Run-off from the site flows to the southeast corner of the site where
it enters a small depression adjacent to South Mason Street. The now must pond to a
depth in excess of V2 foot before it overtops the westerly curb and flows into the gutter.
The curb and gutter is constructed to flow to the north. The run-off which is directed
along the curb and gutter ultimately flows into the Foothills Basin outfall system.
"•'•_ 1 up •'
The proposed development of the site is to consist of constructing a commmercial
structure to be located on the eastern third of the site. The structure is to contain a total
floor area of 4,400 square feet with a building "foot -print" of 3,600 square feet. A paved
parlting area is to be provided for 13 cars and will be located between the structure and
South Mason Street. Access to the site is to be provided through a shared driveway to be
located at the northeast corner of the site. The proposed site plan indicates that the
western third of the site is to be graded and seeded to native grasses but will remain
vacant.
The current City policies require that the difference between the historic rate of run-off
and the developed rate of run-off be detained onsite. The release rate is to be no greater
than the 2 Year Storm historic rate. According to the City's Stormwater Utility staff the
site has previously been included in a Special Improvement District that established a
peak rate of discharge of 0.5 c.f.s. per acre for the controlling factor in determining the
size of detention facilities onsite. The City's policies normally require that the street flows
adjacent to the site be incorporated with the onsite detention requirements. This policy
works when the street construction and onsite detention are developed together. In this
instance it is not physically feasible to combine the two flows. Consideration is being
given to the flow from the adjacent railroad right-of-way which will reduce the the
overall discharge to the area streets.
EROSION CONTROL MEASURES
Erosion control considerations have been made based upon the short term, i. e., during
construction activities and the long term, through the life of the facility. The long term
measures incorporated to eliminate erosion are the proposed methods and materials to
be used to provide a surface covering for the driveways, parking areas, walkways and the
landscaped open areas. The structure and hard surfaced areas will provide a covering to
deter erosion. The landscaping and seeding the open area to native grasses will provide a
combination of plantings and ground covers to deter erosion.
The short term erosion control method to be incorporated into the construction
requirements for the project is the placing of a "Sediment Trap" and "Silt Fence"to
control mud and debris onsite. The proposed construction site is exempt from providing
wind erosion measures since it is less than one acre in area. The schedule for
construction activities is anticipated to be: September 15 - September 30, perform site
grading and access related construction; October 1- January 1, structure construction;
December 1- December 20, construct new parking and drives, and install landscaping
and signage.
CONCLUSIONS AND RECOMMENDATIONS
1. The proposed development will retain the existing drainage patterns.
2. The site is located in the MAIL CREEK and FOOTHILLS DRAINAGE BASINS. The
site is not located within a defined floodway or flood plain.
3. All development is to be performed in accordance with City of Fort Collins criteria. A
request for a variance to the City's policies is requested for the detention of adjacent
street flows.
4. Onsite detention of stormwater is required by the City of Fort Collins. The volume of
run-off estimated to be the difference between the existing and the proposed
conditions is 3,289 cu. ft. This volume has been determined based upon the difference
between the run-off from a 2 Year Storm with the site considered at the undeveloped
condition and the run-off from a 100 Year Storm with the site considered at the
proposed conditions. This volume determination is consistent with providing
sufficient detention volume to release at a maximum rate of 0.50 c.fs. per acre of
developed site.
5. The City of Fort Collins Standards for temporary erosion control measures are to be
incorporated with the construction activities.
E .4HI :ITS
No Text
(LOT 12) R (LOT 13)
38.0 8.2 Elev.(Typical) 37.9
7.5
37.
Proposed Finish Surface I
18' _ I_ 39' _ 31 _ 15' _ 23' _ I
SECTION Cup 50' E. OF W. PROP. COR. COMMON TO LOTS 12 & 13
(LOT 12) R (LOT 13)
Proposed 38.35 Elev.(Typical)
P 38.0 7 g5 FL 37.35 FL Proposed
Structure . - Structure
Proposed
Finish Surface
I
15' 30' 51. 5' 29'
SECTION 0- 135' E. OF W. PROP, COR. COMMON TO LOTS 12 & 13
Prop(
Struc
)posed
ucture
SECTION (a) 110' W. OF E. PROP. COR. COMMON TO LOTS 11 & 12
(Fq
�,Ml(OUIAAATJOHO
Client: Delgado and Delgado
By: DRM
Project No. GRD-110-93
July 27, 1993
Calculations for Drainage Investigation
in the NE1/4 of Section 35, Township 7
Collins, Larimer County, Colorado
for Lot-12 of Creger Plaza - 2nd Replat located
North, Range 69 West of the 6th P.M., City of Fort
Total On -Site and Off -Site Areas = 0..849 ± acres (including South Mason Street
right-of-way and BN Railroad Right-of-way)
The proposed development of the site is to consist of the construction of a commercial
structure together with the associated parking and access drives. The net area of the site
after deduction of the existing South Mason Street r-o-w and the railroad r-o-w
Net Site Area = 0.677 ± acres
EXISTING CONDITIONS - RUN-OFF COEFFICIENT
Rational "C" Factor = 0.20 for Lawns and Landscaped Areas
of
of = 0.95 for Roofs, Decks, Patios, etc.
to
It = 0.95 for Asphalt and Concrete Streets, Drives, and Parking
to it it= 0.50 for Gravel Drive and Parking
of it = 0.20 for Unimproved and Open Areas
It
it to
= 0.20 for Railroad Right -of -Way
"C"avg (Undeveloped)
All area considered to be "Unimproved"
"C" avg = 0.20
PROPOSED DEVELOPMENT - RUN-OFF COEFFI
"C"avg: Lawns and Landscaped Areas
= 2,550 sq.ft.±
Roofs, Decks, Patios, etc.
= 3,600 sq.ft.±
Streets, Drives, and Parking
= 12,400 sq.ft.±
Gravel Drive and Parking
= 5,555 sq.ft.±
Unimproved and Open Area
= 8,383 sq.ft.±
Railroad Right -of -Way
= 4.500 sq.ft.±
Total Area
= 36,988 sq.ft.±
"C" avg = ((15,433 x 0.20) + (5,555 x 0.50) + (3,600 x 0.95) + (12,400 x 0.95)) j- 36,988 = 0.569
"C" avg = 0.57
TIME -OF -CONCENTRATION
Time of Concentration overland from R.R. to grade break point onsite
Time of Concentration across undeveloped area Considered as:
T(min.) = L(ft.) + [Vel. (ft./sec.) x 60 min./sec.] per Fig. 3-2
S = 1.2% & L = 100 ft. Vel. = 0.7 ftJsec.
T =100 + [0.7 x 60 ] = 2.38 min.
Page 1
Client: Delgado and Delgado Project No. GRD-110-93
By: DRM July 27, 1993
EXISTING CONDITIONS TIME -OF -CONCENTRATION
@ S = 0.5% & L = 200 ft. Ve1.=0.5ftJsec.
T = 200 + [0.5 x 601 = 6.66 min.
Therefore, T = 2.38 + 6.66 = 9.05 min.
USE 10 minutes as Time of Concentration
12 @ 10 min. = 2.50 inJhr.
RUN-OFF
Run-off, Q = C x I x A x Cf
Cf at 2 year Storm = 1.0
Iioo ® 10 min. = 7.25 inJhr.
Cf at 100 Year Storm = 1.25
RUN-OFF FROM SITE AT EXISTING CONDITIONS:
Q2 = 0.20 x 2.50 x 0.85 x 1.00 = 0.42 c.£s.
Qioo = 0.20 x 7.25 x 0.85 x 1.25 = 1.54 c.fs.
® Proposed Conditions Tc = L/160 + 10
Tc = 300/180 + 10 =11.67
USE 10 minutes as Time of Concentration
12 @ 10 min. = 2.50 inJhr.
Iioo @ 10 min. = 7.25 inJhr.
RUN-OFF FROM SITE AT PROPOSED CONDITIONS WITHOUT DETENTION
Q2 = 0.57 x 2.50 x 0.85 x 1.00 = 1.21c.fs.
Qioo = 0.57 x 7.25 x 0.85 x 1.25 = 4.39 c.£s.
Determine Release Rate ,Q, at 0.50 c.f.s./acre:
Qrelease = 0.50 x 0.85 = 0.42 c.f.s. = Q2 undeveloped
The estimated detention storage volume based upon the current City criteria is indicated
on the following page. (Page 3)
Page 2
Client: Delgado and Delgado
By: DRM
Proj. No. GRD-110-93
REV.9/3/93 DRM
Proposed Development" C' factor forWE,STERN Portion of Site
Area Contributing = 0.42 acres t (18.380 aq. ft.)
Character of
Surface
Run-off
Coeff. "C"
Area
(Sq. Ft.)
Roof
0.95
1,560
Gravel
0.50
5,840
Native Grass
0.20
6,480
Railroad R-O-W
0.20
4,500
Therefore, Avg. "C" @ WESTERN side of site = 0.36
Proposed Development' V' factor for EASIERN Portion of Site
Area Contributing = 0.35 acres t (15,095 aq. ft.)
Character of
Surface
Run-off
Coeff. "C"
Area
(Sq. Ft.)
Roof
0.95
20060
Gravel
0.50
1450
Paved Drives & Walks
0.95
7,825
Landscaping
6.20
31760
Therefore, Avg. "C" ®WESTERN side of site = 0.72
Consider that the onsite detention is to be provided by direct proportion of "C"
factors.
Total Release Rate, Q = 0.42 c.fs.
Q release West = 0.50 X 0.42 = 0.21 c.f.s.
Q release East = 0.42 c.fs.
"C" West / "C" East = 0.36 / 0.72 = 0.50
Page 3
Client: Delgado and Delgado
By: DRM
Proj. No. GRD-110-93
REV.9/3/93 DRM
Determine Detention Vol. Desired @ Q100 Proposed, Q = CIACf
® the WEST side of the site, CACf = 0.36 x 0.42 x 1.25 = 0.19
Time
(min.)
Q100
Proposed
(c.f.s.)
Volume
® Q100
(cu.ft.)
Q
Released
(c.f.s.)
Volume
Released
(cu.ft.)
Volume
Difference
(cu.ft.)
10
1.37
822
0.21
126
696
15
1.13
1,021
0.21
189
832
.2D
0.98
1 1,179
0.21
252
927
25
0.87
1,304
0.21
315
989
30
0.78
1412
0.21
378
1,034
40
0.66
1,588
0.21
504
1084
50
0.57
1,701
0.21
630
1,071
6D
0.49
1,769
1 0.21
756
1,013
@ the EAST side of the site, CACf = 0.72 x 0.35 x 1.25 = 0.32
Qin = Q100 + Q released from WEST = Q100 + 0.21
Time
(min.)
Qin
Proposed
(c.f.s.)
Volume
@ Q100
(cu.ft.)
Q
Released
(c.f.s.)
Volume
Released
(cu.ft.)
Volume
Difference
(cu.ft.)
10
2A9
11496
0.42
252
1,244
15
2.10
1,890
0.42
378
1,512
20
1 1.85
2,218
0.42
504
1,714
25
1.66
2 489
0.42
630
1,859
30
1.52
2,731
0.42
756
1,975
40
1.31
3,150
0.42
1,008
2,142
50
1.16
3,465
0.42
1,260
2,205
60
1.03
3,704
0.42
1 11512
1 2,192
70
0.93
3,925
0.42
1 1,764
1 2,161
Therefore, provide the following:
Max. Vol.
Max. Vol.
O WEST Area Minimum Detention Volume =
1,084
Cu. Ft.
Maximum Release Rate, Q =
0.21
C.F.S.
® EAST Area Minimum Detention Volume =
2,205
Cu. Ft.
Maximum Release Rate, Q = 0.42 C.F.S.
Page 4
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Client: Delgado and Delgado
By. DRM
Project No. GRD-110-93
Rev.9-3-93 DRM
DETERMINE DETENTION VOLUME
VoL in Detention Area #2 at East side of Site
Elev. = 37.0 Area = 5,515 sq.ft.
Elev. = 36.0 Area = 10 sq.ft. Vol. = (5,515 + 10)/2 = 2,763 cu fL > 2,205 OH
VoL in Detention Area #1 at West side of Site
Elev. = 38.6 Area = 4,020 sq.ft.
Elev. = 37.5 Area = 10 sq.ft. Vol. =0.6 x (4,020 + 10)/2 = 1,209 cu.fL > 1,084 OH
DETERMINE ORIFICE SIZE
Orifice Equation, Q = CA42gh
A = Q -i- C42gh
At East
Q = 0.42 c.f.s. C = 0.65
h = 37.0 - 36.0 = 1.00
A = 0.42 + [0.65 x 4( 2 x 32.2 x 1.0)] = 0.0805 sq. ft.
A=w*2 w=CIA
w = 40.0805 = 0.284 ft. = 3.41 inches
Therefore, Use 3-3/8" x 3-3/8" as Maximum Orifice Opening
At west
Q = 0.21
h=38.1-38.5=0.6
A=0.21+[0.65xA2x32.2x0.6)]=0.0520
A = 40.052 w = 0.228 ft. = 2.73 inches
Therefore, Use 2-3/4" x 2.W' as Maximum Orifice Opening
Page 6
RAINFALL PERFORMANCE STANDARD EVALUATION
PROJECT: Lot 12, Creger Plaza - 2nd Replat STANDARD FORM A
Rev.
COMPLETED BY: Dennis Messner DATE: 9-3-93
DEVELOPED
ERODIBILITY
Asb
Lsb
Ssb
Lb
Sb
PS
SUBBA$IN
ZONE
(ac)
(ft)
($)
(feet)
VO
M
Moderate
0.68
290' ±
1.Or
77.0
MARCH 1991 8-14 DESIGN CRITERIA
Q
b
EFFECTIVENESS CALCULATIONS
Lot 12, Creger Plaza - 2nd Replat STANDARD FORM B
Rev.
COMPLETED BY: Dennis Messner DATE: 9-3-93
Erosion Control
C-Factor
P-Factor
Method
Value
Value
Comment
Bare Soil
1.0
1.0
16,800 sq.
ft.
Pavement
0.01
1.0
930 sq.
ft.
Gravel/Base Course
0.05
1.0
8,100 sq.
ft.
Structural
0.01
1.0
3,660 sq.
ft.
Sediment Trap
1.0
0.5
BASINI ($) IBASINI (AC) I CALCULATIONS
Construction Period considered as worst case at ti
that foundation is in place and major construction
beginning.
Wtd "C" _ [(16,800 X 1.0) + (930 X 0.01) + (8,100 X
0.05) + (3,660 X 0.01)] ; 29,490 = 0.58
%- 0.6
Wtd "P" = 0.5 X 0.5 = 0.25 v 0.3
Eff. _ [1 - (0.6 X 0.3)] X 100 = 82
827 77 Therefore OK
MARCH 1991 8-15 DESIGN CRITERIA
CONSTRUCTION SEQUENCE
PROJECT:Lot 12, CreRer Plaza - 2nd Rep at STANDARD FORM C
,QUENCE. FOR 19 93 ONLY COMPLETED BY: Dennis Messner DATE: De3.93
Indicate by use of a bar line or symbols when erosion control measures will be installed.
Major modifications to an approved schedule may require submitting a new schedule for
approval by the City Engineer.
YEAR
MONTH
--------------
OVERLOT GRADING
WIND EROSION CONTROL
Soil Roughing
Perimeter Barrier
Additional Barriers
Vegetative Methods
Soil Sealant
Other
RAINFALL EROSION CONTROL
STRUCTURAL:
Sediment Trap/Basin
Inlet Filters
Straw Barriers
Silt Fence.Barriers
Sand Bags
Bare Soil Preparation
Contour Furrows
Terracing
Asphalt/Concrete Paving
Other (Base Course)
VEGETATIVE:
Permanent Seed Planting
Mulching/Sealant
Temporary Seed Planting
Sod Installation
Nettings/Mats/Blankets
Other
E993
Sept.' Oct. l Nova Dec .�Jan
r
Not Applicable
STRUCTURES: INSTALLED BY MAINTAINED BY
VEGETATION/MULCHING CONTRACTOR
DATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON
i/SF-C:1989
ti
DRAINAGE CRITERIA MANUAL
RUNOFF
50
30
f- 20
z
W
W
li 10
z
W
IL
O 5
Ca
W
oNc 3
O
U 2
W
H
3
1
5
.1
_-MENI11I-A=
FNFAtlff-
MEN
w
I
IN
HIM
ON
NONNI
.2 .3 .5 1 2 3 5 10 20
VELOCITY IN FEET PER SECOND
FIGURE 3-2. ESTIMATE OF AVERAGE FLOW VELOCITY FOR
USE WITH THE RATIONAL FORMULA.
*MOST FREQUENTLY OCCURRING"UNDEVELOPED"
LAND SURFACES IN THE DENVER REGION.
REFERENCE: "Urban Hydrology For Small Watersheds" Technical
Release No. 55, USDA, SCS Jan. 1975.
5 -1-84
URBAN DRAINAGE & FLOOD CONTROL DISTRICT
SITE DRAINS TO FOOTHILLS BASIN
GROSS SITE AREA = 32,488 SOFT. = 0.75 ACRES t
GROSS SITE AREA INCLUDING OFFSITE RAILROAD R-O-W - 36,988 SO.FT.= 0.85 ACRES t
NET SITE AREA EXCLUDING SOUTH MASON STREET R-O-W = 29,488 SO.FT. = 0.68 ACRES t
HISTORIC "C" = 0.20
DEVELOPED "C" = 0.57
CRITERIA BASED DETENTION VOLUME = 3,289 cu.ft.
PLAN DETENTION VOLUME = 4,520 cu.ft.
MAXIMUM DEPTH OF DETAINED WATER =1.0 ft.
PEAK DISCHARGE, O = 0.42t c.f.s.
N
S
SCALE 1_20
G \
✓ 0i onv I �so
J OIOp
Q�
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I
aJ90 cc
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360Z ons a
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1
LOr13 Note tbattheo"'teapyab the math that } LU
(1? odo the elite Will be eGmi3ao4d OPLot 136develo ibutea W I
(lteferw"UTtwty, C hen Lot l3 develops W
for fnt l3 radby„Dndn:3KB and liroeion CwatrW Ybaf'
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'I jgn .3aai � �3a �11 F _
1 AISTIN6 6 VENIIGAL CUBE
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� �� / � w / '✓Qn
w
LOT12
\
. 36 96.5 T JJJ o"n J lo6i I
Ouaia a3S.0.76 east
i
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34a Ataa MAW6a �N I,B'Bo'•¢CMENT m4nr
i CCE SOA
354
.04E
3 409
,90E 3231fi .
\ Drrainage Arna Boundary Wl9dered I IBM. TOP OF CURB
at Fyoe[iayCoMi6o� - i� F Ev_so3862
ii I
LOT 11
EXISTING CONDITIONS EXHIBIT
Lot 12 of "CREGER PLAZA - 2ND REPLAr'
located in the Northeast Quarter of Section 36, Township 7 North,
Range 69 West of the 6th P.M., City of Fort Collins, Lorimer County, Colorado
GENERAL NOTAN ES --- _
1 ul street, aanuary slower. seem u w era water line Wnseut shall W M m to City of FM TE4Z77:n
rn•
Comma sta M ds and spec Ike Ions armor . dare of emanon of me PowloMem AOresmonl NVA_eNear dM e¢ saus�N,SlWm b Agr anent 0 911 Any Wnsmex rvinon O of the IMee ream it esof Ugn cl Me wwaM9F1 }C'11Y9 M1•s9 b' /Cs mayrel Ram al I shell rpu re reeaemm 10 th Df to pane Dy me OI•ecbe of "niA 4a,7!1 ///and mry tea re W lMy Ix made w Wmoem m me neMeles pie watlMnnane wmenl M Mal=11ems.Street pwlna mall rot start until the $oils Repan end Pevmnnl Dsslpn ere a YW Ey Me d �I� ti"'Pfor
yineerl ii=lil J•IDreebe ofE Nedit suNrWe 6mq' Mars am Wen and gp r,iea rw.. m
3. The 1 . 4ia, boa1M mq nut r of as kni underground u11sant we w ximeM as "loom on Mtl,ya ypy ••A � � w'" •'^"•b^w
IN Wawtms. It shall p me remona[:1iry of the cwlmdo. N .ens, The misNrm and kwpn d �a..0 me 3 3 ALL underground unless along Me mute of ma room. Berore MmmomiN new cOndrudim. meVAI
CenifMW Nall m mfpMrwo kr w1knom underground meets. Tu • - --
+� .
a. The Enguncer viam, has prepared Mesa pens tor Fort motor say hereof eotl herself WANtANANa ErfRnAN
f4LYW.O�L'R.e'Yw
ra"nKbility to 1M City as LeneliGery of said Erg neela ropes tar any anon and ore ¢alma qq y1s• we o AN s•u seam uW cue • �•
vnM n plm eat approval bJ Me dr f of EMInM Mee MI mkeve the EynN( vxa gAll •^.=n v rues n nIu
AN li;Ntlear
who n prep n f s of all Awn my Mbil1 ry W'•m u4w u (Mrs w °xrRw ea r L -�
AT
S. Wnm an a.bing maned team must he at Me St,wt must AN resorted m a Wndmn Fauy m or
New Man is original MnOtbn The mlohp meet WM1Nbn shall pe Mcumentw1 w the Ciry 1 MANp•nvp hit a e N -L
Consumption ImpBCIW MMB my ale are map. Pa1Mlry May ON Mlle In WnWmamea win MB BEpIMEHT TRAP BILi FFHCE
City m FM Collins Steul Repair Ste ar The rushed oetth shall dend amooMlyl Into Na a yfdP clL a iLFP aXD SOEVp1x
eskelp suehce. All tarps WINS¢ slWl W Wvad wile en asphyt lay Own mayeine. n snxb L w; colqups v `+u u den. T
"Ore mate than ore cM M made m waNy of IN entire West width, 'trlWiry Me M1 d area ^••^ mwea.eM EF UTILITY gp4oJ �9
may p mrryY•d no eMwmNBlon of Mil M a avybla avMay Nal p map 6J IN O4acgr of WFAA a A AMp
mayW M for re33 urrar snxuwA my C]B S
ENi�
6. Rbr b Me mmmer meN of my pnsnclbn the C traI soon mimed all days, wo nWa hm tb a DDT 13) S u§i rr 1
va p0a'tmmn to wm IMv draw Me ON PoeAW N srll• asite Inm
b my ew removal re0u4Ng a Drama 3e 0 Elw.lTyoloall gaily m
T. Polar M Me wmmoncoment o1 my mnSdWtw. Ind Conuedor NLI Oita Ma City Enginearinp a> (LDT 1Z1 IL (LOT 13) manr ynwu c
Daparlmant Men1y-bW last dmWe advwre team. m �� N pre 3T. PW nE4v.JT�1)5Rlmlun 8. Ppr to the commwrcement cl any m,SimctWl that wet exact 4aeh signs al my ironthe C Vador shell mnlect the Clly of Fen Collins Streets Owimn, wM will lempomely mmpe An 1 a a ' r 4 to the pan at r9 wet to the Commemero however, 11 the Con"mr mesas lue real sDn hlmmlh ew Cmlmler MII be'Forav d AM Me Near, mmeeaN and eyl c M re' call Me Sign 5 C� ® RP Df W aROp OR OMMON TO LOTR 19 R 13
9. M pm etlsltry curs. Outten and sde k Myl M repotted prior he -u More of W MW ` I Pa'
Imprommonde. \i\E{ w ,
10. MaMMnanm M msee drain" 1WIMm shis M the ors mbiliy a roe peoryM O M. / \\
l l . I1tM tc lanOW wn. n of I" "w a wmn Mn setting IMI Me &&Kaye fan tka fade
Olsonprodded
1/ \
en wnstrudIn epvpm rdence win the (el end s w,rodd tbns must M ped for
Pram " Eylnew W,vs In the Smm 01 Cubmb The ®mM m must lie audn IW b end
ail \
MYW Oy IN Stumwbr IIIIG>y yW • as IN ail of a C"t le dI pwq
12. Mnm error
lmuwr low 19W INS¢ It a-frz I amaAmum waver Is 51@ feet, \ \
I
13. Ifdawalernp s uwd to IacTlale Installation of ullden or other Imp 1 and it Me \
ew
dewelednp wastewater is Ic as da argM nb a storm rower, cMnnel m tkoWith, or any
watm of Me UMm Smus a Spite'N"a ng Wmlew•Mr o sdwpe POrml I oqi red.
14. All mnslrucMn apvllles most mmp'y wlln the Stale of Colorado pwmtlynp prorres! for
-SWmwater D' llaT" ft c tO With C ,st4 ion Ad NM' Farhkmaem, plow o tm Me
Caw b Ne Mete of HJ Water OM14 Control M DNb, WOOD ITS 02, Cnrtry Credit Drive QD
BCUM, Denier, PgWah 5m m222IIAUMNn: Parmlb u EMwwmml5 lion 79"Mne: that O
2 ]s 90. 6
IDonV•c
J I
15. S Cloe snail ea mewanside b prONov and implement all mropelala "!lime CM1mC Q
16. The Commomar anal WO,m all work am ,ng to all City. County State and Federal 9e V C
andalaepulanona e In pmwm Mqmn Mg- and Open Eamalm' ewarak s are b
y ram
all Current Ds pie mil regulators d r menis. 2
g
17, MESSNER Erglnmr ry Aa ame is Fiat a puaranio• OI IN mnslrucllng Conlew orld oOlARI Ad
Rft yrc Mid Nmpeibn N the waM. MEBSNER ENineemq A aMa Is not resPonslak her 41
F
sends,. In, on, or about NB WOlad sitar nor for mmplance Of the •rympNle party of any It
O
ESSY/'
(NulMMs lnorM. MER E"nneeng � ''ands alternate m�lmt of the adc I
m my WIWN mmWm,t meibalna. norms or other work Ws osN In or tom Me purled. or In z
NB wpM'isbn Of it's alwemenlbnM.
1a. Project Engineer: MESSNFA 6 lnW"A4YpaM IS NA,
E. Zen SVNh 3 24 FO
I ,Owd. Colorado em20 U.
Tale!(3a9) M2u1 2 \
J
19, MFKANWM: MINI east On NEBB fire seftnl . E 1 tl Ind SWlawael corner of 0
HdsekoM ROW and R. Nand SVxL EWeNn • E(Uiy 0
20. $fC(MIXVW4C£aF)Yb']NIXNIWYNJI6:
A As d rM W 4 Ma city It eonswdwn fro l or, Me dentexmr snag pwkla dl wdwam (LOT ISI P LOT III
m•[Mal ntl kept emWe] b New ma I AWA uxW onto No "sent evkingp W pmp"seO ,9 z5
straeNA 3all
ere / 3775 Else(Typieee
B. The COnVw.lor A -ns II M 1 'S a Fal at Me t41MO n Me pm. 3T D SuuWclun
The intent of he 'Sad Fora y rod"nl and MWs Item M M lie Mojamed
property during ne 0 doll OI cornsurtichan when open aNhen surfsurfamis Ads slow IW N9mW pn.0
moment to J contend! in storm eMex. The SAN FoM' we W eq.Ilmd Only Wmq The 3udem
Warrant.pallid Whenlimn alldanea we
c The Corm dram
anon I As IMG el Fan i $edm.m Rapp' a Ind MS)' an w. a In
BM storm h M In si cs In WI m MB sPlain.
Olson
lla'SMmml T Am w b lxredl In SECTION de 11P W OF E PROP,
alaN thmlNn Me m,¢IrmMn mMw m Neq m opn.MBMn wnwm w wawm,
ANKFAMANAM
Nw�_ wane w_
it M E4r T u
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ear .
w 81N@T T RUARR DUtip
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Storrrworw Datel
Easement
WEST DETEI
AREA U N
I
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3850F / 37`
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PLAN 4FFI° k3 f �G
INLET
a D A PIP'
— V ST PmDosad SWm Drain
_N`39�N ERIsting Surface Contour
-+93,N�, Pmpossd Finish Suff w Contour
(9L93) Eiseng Spot EleMWn
N(8TC7 FL) Eistina I Elevalon Fbwlne of GuU"
e35.85 Pmposeri Spot ElevaWn at Finish Suaf
to 40 PmpoBed Curt
Pmpoeell'SiA Fenn'
O 20 CO tlmit M Dminpe Basin
SCALE: /"=20
AS
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♦ ♦ . }i I Ir%; I W; I W a
\ REFER TO PLAN FOR LOT 13' qBM TOP BACK OF CURB
�') ELEq. 5036.05
IV 49' 40" Al 32660' ��� I'" w
/ 1.1-JOSCUIRED
Oeenf(¢n OSRrt gEOUIREO "BIOEWALK
S IIWp " . CULVERTASMALTEAST DETENTION rithem Plate 41:11rAd 4"Sewer Servic
CURB AND GUTTER DETAILS
f I
Bar warts
as
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MAIN DIOOR
r E�EV.33y.25
s d)•
F as "SMinwn lac Rat 10 s Pip
I E UTILITY 80.0D (ReIW le stein)
EASEMENT
133,171
l
6Q00
REFER TO PLAN FOR LOT II
Sol AREA lag
NWL•3T.0
AS
PNBLT
SormwalMArF-
-pefen Non Easemeri _,
}1 -sea le3B.D5
iT 3>.oh
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a UTILITY I� �
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TYPICAL SERVICE DETAIL
rtrl
S[Mem[wr
aTANDARO CMWL "ACE BETTIXO
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ro[na— m
wrt•
Cm p R.COwxs. oOLaRnaa
'^°^° ^
•
FOR Ole l l' WATER METERS
o�. 9
"IF OF ewRk eOlvam •^^^^
EITI'. RED 3/4Water SergLe
G with Curt -stop t lfe ears otwai
0 CUT a PATCH STREET PEI
0 CRY SPECIFICATIONS
VERTICAL CURB B GUTTER
{lam—TBM TOP OF CURB
11 ELEV. •5036.62
ACCESS S UTILITY
= I EASEMENT
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read "'r await O West
Qnn � re Plate dl y over oadn Pip rotor
p wmwm in me Korn of rw qw
OM'p POIS M w N. Marl Rru
ORIFICE PLATE DETAIL
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