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STORMWATER REVIEW COPY
Final Approved Neport
/O 20 y3 Dde
DRAINAGE DNESTIGATION
For
A Proposed Addition To
LEWAN & associates
1608 SOUTH COLLEGE AVENUE
FORT COLLINS, COLORADO
Prepared for
M BI CORPORATION
P. O. Box 9553
Fort Collin, Colorado 80525
September 1993
(REVISED: Oct.14,1993)
Project No. GRD.107-93
Prepared By:
MESSNER Engineering Associates
150 East Mh Sheet, Suite 225
Loveland, Colorado 80538
Telephone: (303) 663-2221
Civil and Environmental Engineering Consultants
September 13, 1993
Project No. GRD-107-93
REVISED: Oct. 14, 1993
Mr. Raju Jairam, P.E.
MBI Corporation
P.O. Box 9553
Fort Collins, Colorado 80525
Dear Mr. Jairam,
The enclosed report represents the results of the Drainage Investigation for the proposed
addition to the Lewan and Associates building located on Lots 1, 2 and 3, Block 1 of I. C.
Bradley's Addition to the City of Fort Collins, Larimer County, Colorado.
This investigation was based upon the proposed site development plan; 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.
Thank you for the opportunity to be of service to you. If you should have any questions,
please feel free to contact this office.
Respectfully Submitted,
MESS R Engineering Associates
Dennis R. Messner, P.E.
DRM/mkm
Enclosures
/0 / f-Y 5
Civil and Environmental Engineering Consultants
150 E. 29th Street, Suite 225 Loveland, Colorado 80538 Telephone: (303) 663-2221
September 15,1993
Project No. GRD-107-93
Mr. Glen D.. Schlueter
Stormwater Utility
City of Fort Collins
235 Mathews
P. O. Bog 580
Fort Collins, Colorado 80522 - 0580
Re: LEWAN & Associates building addition located at 1608 S. College Ave. (also being
Lots 1, 2 & 3, Block 1 of I. C. Bradley's Addition, 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.
DRWmkm
cc: Mr. Reju Jairam, MBI Corporation
Mr. Larry Trampe, Architectural Resource Group
Civil and Environmental Engineering Consultants
150 E. 29th Street, Suite 225 Loveland, Colorado 80538 Telephone: (303) 663-2221
Letter of Transmittal
i
Table of Contents
n
Scope
1
Site Description
1
Existing Conditions
1
Proposed Development
1
Erosion Control Measures
2
Conclusions and Recommendations
3
Vicinity Map
Existing Conditions Exhibit
Proposed Conditions Drainage Exhibit
Calculations
Drainage Summary
ii
The following report represents the results of a drainage investigation for a proposed
addition to the "LEWAN & associates" building located on a parcel of land situated in the
Northwest Quarter of Section 24, Township 7 North, Range 69 West of the 6th P.M.,
Bradley's Addition to the City of Fort Collins. The investigation was performed for MBI
Corporation. 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 required
improvements, if any. The appropriate sizing for the proposed improvements have been
determined in order that the improvements may be incorporated with the other
construction associated with the project. The conclusions and recommendations
presented in this report are based upon the proposed site development plan; proposed site
grading and drainage 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.
The street address of the site is 1608 S. College Avenue. The site is rectangular and
contains approximately 0.5 acres. The site's East-West dimension is approximately 145
feet and its North -South dimension is approximately 150 feet. The site abuts the easterly
right-of-way of College Avenue, the southerly right-of-way of E. Prospect Street and the
westerly right-of-way of an alley located at the east side of the site. The site is located in
the SPRING CREEK DRAINAGE BASIN.
The site presently consists of two separate uses. A masonry structure is located on the
southern third of the site. This structure has been used for commercial purposes since
its construction. The northern two-thirds of the site, the area located at the southeast
corner of the intersection of S. College Avenue and E. Prospect Street, is vacant. This
area has been vacant for several years but was previously the site of a gasoline service
station. The site was completely paved and totally impervious at that time. Due to the site
having been previously developed, the northern area of the site slopes away from a high
point.where the service station structure was located. The runoff from this area flows to
the west onto S. College Avenue, the north onto E. Prospect Street, and to the east onto the
alley adjacent to the site. A storm drain inlet is located at the easterly end of the curb
radius at the intersection of S. College and E, Prospect. The existing structure is situated
on the southern third of the site. A small area at the front of the structure slopes to the
West and'drains onto S. College Avenue. The roof and parking area located to the East of
the structure drain easterly onto the adjacent alley. The site does not receive direct offsite
run-off. The run-off generated on the adjacent property is directed westerly into the
gutter of College Avenue or easterly into the alley. Run-off that enters the gutter in
College Avenue flows northerly to a storm drain inlet located near the northwest corner
of the existing structure. The offsite run-off flows across the parking area and access
drive toward the east to the alley. The flow is intercepted in a storm drain inlet that is
located in the alley approximately twenty-five feet south of the southeast corner of the
site. The two inlets at the west and north sides of the site drain into a storm drain that
flows east to Remington Street and then south to Spring Creek. The storm drain in the
alley flows south to Parker Street and then easterly to Remington. The drain discharges
into the storm drain from Prospect and then flows southerly along Remington to Spring
Creek.
PROPOSED DEVELOP
The proposed re -development of the site is to consist of expanding the existing retail
store/office structure that is located on the south side of the site. The area to the north of
the proposed addition is to be used for parking, landscaping and a new access driveway.
Other future improvement that will ultimately effect the grading and drainage for the
site is the proposed re -construction of E. Prospect Street. This construction is to provide
channelizing and turning lanes to improve traffic flow in the area. To provide an
additional traffic lane the curb and gutter is to be shifted to the south a distance of 12 feet.
These street improvements will require that the existing storm drainage inlet located at
the southeast corner of the intersection be reconstructed. The proposed site grading and
drainage plan has taken the anticipated street construction into account. The perimeter
grades have been established at the proposed landscaped areas to allow for the
anticipated widening. The crown slope grades of the existing roadway have been
considered to be continued to the proposed gutter locations.
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. Due to existing physical constraints it is not
practical to adhere to the current criteria. These constraints are:
1. The western side.of the site is fixed due to existing curb, gutter and sidewalk along
South College Avenue.
2. The eastern side of the site is fixed due to the existing alley grades, utility structure
locations and elevations and the adjacent commercial and residential structures.
3. The northern side of the site is to be lowered due to the anticipated widening of E.
Prospect Street.
4. The southern side of the site is fixed due to the existing alley grades, utility structure
locations and elevations and the adjacent commercial and residential structures.
The proposed site plan decreases the overall amount of impervious surfaces
significantly. The total run-off that is to be generated on the site will be less that that
generated by the present conditions. A portion of the site, approximately 0.08 acres, is to
be routed to a new drainage inlet that is to be located in the parking lot adjacent to E.
Prospect Street. The entire site previously discharged undetained onto the adjacent
streets and alley. The proposed site grading and the addition of landscaped areas will
reduce the rate of run-off that ultimately discharges from the site. This will be be an
improvement over the existing condition. Therefore, a variance to the current policy with
regard to onsite detention is requested.
Erosion control considerations have been made based upon the short term, 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 to be established will be a combination of plantings and
ground covers to deter erosion.
2
The short term erosion control method to be incorporated into the construction
requirements for the project is the placement of "Silt Fence" around the perimeter of the
construction site. It is not considered as necessary to provide any wind erosion measures
due to the protected nature of the site. In fact, the project 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: October 1- December 30, remodel and expand the existing
structure; October 15 - November 15, perform access and site related construction;
November 1- December 15, construct new parldng and drives, and install landscaping
and signage. With this schedule the site will be "open" and subject to water caused
erosion for an relatively short period. Therefore, depending upon the sequence of
construction activities, the time elapsed between activities, and the weather conditions
through the construction period, it may be possible that no temporary measures will be
required. The "Silt Fence" or an equivalent measure is to be provided in order to protect
against the variables in the schedule and weather conditions.
CONCLUSIONS AND RECOMMENDATIONS
1. The proposed development will retain the existing drainage patterns.
2. The site is located in the SPRING CREEK DRAINAGE BASIN. The site is not
located within the floodway or flood plain.
3. All development is to be performed in accordance with City of Fort Collins
Standards and Specifications.
4. Onsite detention of stormwater is desired by the City of Fort Collins. It is not practical
to detain the required volume on the site due to existing topographic conditions and
physical grading constraints that are placed on the site. The grading and drainage
plan has been designed to assure that the proposed development will not adversely
impact the existing drainage system. The site grading design has been prepared to
reduce the area that drains directly into the alley. The increase in the amount of
landscaped pervious area on -site will reduce the total peak rate of run-off and the
volume of run-off.
5. A variance to the City's onsite detention policies is requested in conjunction with this
report.
6. The City of Fort Collins Standards for temporary erosion control measures are to be
incorporated with the construction activities.
No Text
VICINTY MAP
for
LEWAN & associates
1608 S. College Ave., Fort Collins, Colorado 80525
(Located in the Northwest Quarter of Section 24, Township 7 North,
Range 69 West of the 6th P.M., City of Fort Collins, Larimer County, Colorado)
CALCUL TIOO NS
Client: MBI Corporation
By. DRM
Project No. GRD-107-93
REVISED: Oct. 14,1993
Calculations for Drainage Investigation for Lots 1, 2 & 3, Block 1 of I. C. Bradley's
Addition located in the NW1/4 of Section 24, Township 7 North, Range 69 West of the 6th
P.M., City of Fort Collins, Larimer County, Colorado
Project Name: LEWAN & associates
Street Address: 1608 S. College Ave., Fort Collins, Colorado 80525
The proposed development of the site is to consist of a 2,116 sq. ft. addition to the existing
structure plus the construction of a new parking lot capable of providing spaces for 14
vehicles . The site will be required to dedicate property along E. Prospect Street due to
proposed street and intersection improvements anticipated to occur in the near future.
Total Site Area Considered (Lot 1 & Lot 2 plus adjacent Alley and One -Half of Street
Right -of -Way) = 26,000 sq.ft. = 0.597 t acres (existing platted property)
EXISTING CONDITIONS - RUN-OFF COEFFICIENT
Rational "C" Factor = 0.20 for Lawns and Landscaped Areas
It
It
" = 0.95 for Roofs, Decks, Patios, etc.
= 0.95 for Asphalt and Concrete Streets, Drives, and Parking
= 0.50 for Gravel Streets, Drives, and Parking
The existing site has been considered as four (4) separate basins.(Refer to the "Existing
Conditions Exhibit") Only the area that is to be affected by the proposed construction has
been considered since the object of this exercise is to determine the increase in run-off
due the proposed construction.
Pt.1W "C"avg (Existing including adjacent Streets and Alley)
Rocked Landscaped Areas
Roofs, Decks, Patios, etc.
Streets, Drives, and Parking
Gravel Drives, and Parking
Total Area w/ adjacent Street
0 sq.ft+
0 sq.ft+
6,583 sq.ft +
879 sq.ft+
7,732 sq.ft+ = 0.18 t acres
licit avg = ((879 x 0.50) + (6,583 x 0.95)) y 7,732 = 0:899
. 86
® Pt. "A" Exist. "C" avg = 0.90
Pt. "B" does not exist at the existing condition. It is only a point of
concentration after the proposed grading has been performed.
"C"avg (Existing including adjacent Streets and Alley)
Rocked Landscaped Areas
Roofs, Decks, Patios, etc.
Streets, Drives, and Parking
Gravel Drives, and Parking
Total Area w/ adjacent Street
0 sq.ft.±
0 sq.ft+
1,931 sq.ft+
463 sq.ft+
2,394 sq.ft+ = 0.05 t acres
Page 1 of 5
Client: MBI Corporation
By: DRM
EXISTING CONDITIONS - RUN-OFF COEFFICIENT (cont.)
Project No. GRD-107-93
REVISED: Oct. 14,1993
"C" avg = ((463 x 0.50) + (1,931 x 0.95)) + 2,394 = 0.863"
® Pt. "C" Exist. "C" avg = 0.86
"C"avg (Existing including adjacent Streets and Alley)
Rocked Landscaped Areas
Roofs, Decks, Patios, etc.
Streets, Drives, and Parking
Gravel Drives, and Parking
Total Area w/ adjacent Street
licit avg = ((2,283 x 0.50) + (5,121 x 0.95)) + 7,404= 0.811
Pt. "D" Exist. "C" avg = 0.81
"C"avg (Existing including adjacent Streets and Alley)
Rocked Landscaped Areas
Roofs, Decks, Patios, etc.
Streets, Drives, and Parking
Gravel Drives, and Parking
Total Area w/ adjacent Street
0 sq.ft.±
0 sq.ft±
5,121 sq.ft.±
2.283 sg,ft ±
7,404 sq.ft.± = 0.17 ± acres
VX
0 sq.ft.±
0 sq.ft.±
7,432 sq.ft.±
688 sg,-ft
8,120 sq.ft.± = 0.19 ± acres
licit avg = ((688 x 0.50) + (7,432 x 0.95)) + 8,120 = 0.911 `l
® Pt. "Eli Exist. "C" avg = 0.91
PROPOSED DEVELOPMENT - RUN-OFF COEFFICIENT
Pt. "A" "C"avg (Proposed including adjacent Streets and Alley)
Landscaped Areas
Roofs, Decks, Patios, etc.
Streets, Drives, and Parking
Gravel Drives, and Parking
Total Area w/ adjacent Street
1,705 sq.ft.±
750 sq.ft± V/
4,047 sq.ft.±
0 sa.ft +
6,502 sq.ft.± = 0.15 ±,acres
licit avg = ((1,705 x 0.20) + (4,797 x 0.95)) + 6,502 = 0.754
® Pt. "A" Proposed "C" avg = 0.75
Pt.'B" "C"avg (Proposed including adjacent Streets and Alley)
Landscaped Areas = 0 sq.ft.±
Roofs, Decks, Patios, etc. = 0 sq.ft±
Streets, Drives, and Parking = 3,294 sq.ft.±
Gravel Drives, and Parking =0 sa.ft.+
Total Area w/ adjacent Street = 3,294 sq.ft.± = 0.08 ± acres
PL'B" Proposed "C' avg = 0.95
Page 2 of 5
Client: MBI Corporation
By. DRM
Project No. GRD-107-93
REVISED: Oct. 14, 1993
PROPOSED DEVELOPMENT - RUN-OFF COEFFICIENT (cont.)
fee "C"avg (Proposed including adjacent Streets and Alley)
Landscaped Areas = 196 sq.ft ±
Roofs, Decks, Patios, etc. = 0 sq.ft.t /
Streets, Drives, and Parking = 1,299 sq.ft± c/
Rocked Landscaped Areas = 303 sq.ft
Total Area w/ adjacent Street = 1,798 sq.ft± = 0.04 t acres
"C" avg = M96 x 0.20 + 303 x 0.50 + 1299 x 0.95)) + 1798 = 0.792"
Pt. "C" Prposed "C" avg = 0.79
"C"avg (Proposed including adjacent Streets and Alley)
Landscaped Areas = 1,384 sq.ft ±
Roofs, Decks, Patios, etc. = 0 sq.ft±
Streets, Drives, and Parking = 4,331 sq.ft.t
Rocked Landscaped Areas = 1.231 sq.ft ±
Total Area w/ adjacent Street = 6,946 sq.ft.t = 0.16 t acres /
"C" avg = ( (1,384 x 0.20) + (1,231 x 0.50) + (4,331 x 0.95)) + 6,946 = 0.72N
® PL'D" Proposed "C" avg = 0.72
"C"avg (Proposed including adjacent Streets and Alley)
Landscaped Areas
Roofs, Decks, Patios, etc.
Streets, Drives, and Parking
Gravel Drives, and Parking
Total Area w/ adjacent Street
246 sq.ft.t
750. sq.ft±
5,688 sq.ft±
0 sa.ft +
= 6,684 sq.ft.t = 0.15 t acres
"C" avg = ((246 x 0.20) + (6,438 x 0.95)) + 6,684 = 0.922
Pt.'F" Proposed "C' avg = 0.92
TIME -OF -CONCENTRATION
From Urban Drainage and Flood Control District - Draiange Criteria Manual
Formula (3-4) Tc = L / 180 + 10 1 /
L = Length of watershed (ft.) = 110' t V
Tc = 110 / 180 + 10 = 10.6
USE Te = 10 min.
Page 3 of 5
Client: M 3I Corporation
By. DRM
RAINFALL INTENSITY
I2 ® 10 min. = 2.50 inJhr.
Run-off, Q = C x I x A x Cf
Cf at 2 year Storm = 1.0
Project No. GRD-107-93
REVISED: Oct. 14, 1993
Iioo ® 10 min. = 7.25 inJhr.
Cf at 100 Year Storm =1.25
RUN-OFF FROM SITE AT EXISTING CONDITIONS:
,96
PT. "A" Q2 = 0.9P x 2.50 x 0.18 x 1.00 = 0.41 c.fs.
Qioo = 0 0 x 7.25 x 0.18 x 1.25 = 1.47 c.£s.
PT. licit Q2 = 0.86 x 2.50 x 0.05 x 1.00 = 0.11 c.fs.
Qioo = 0.86 x 7.25 x 0.05 x 1.25 = 0.39 c.fs.
PT.'D" Q2 = 0.81 x 2.50 x 0.17 x 1.00 = 0.34 c.£s.
Qioo=0.81x7.25x0.17x1.25=1.25c.fs.
PT."E" Q2 = 0.91x2.50x0.19x1.00=0.43c.£s.
. Qioo=0.91x7.25x0.19x1.25=1.57c.fs. Q}a.�,.fs
RUN-OFF FROM SITE AT PROPOSED CONDITIONS
PT. "A" Q2 = 0.75 x 2.50 x 0.15 x 1.00 = 0.28 c.fs. < 0.41
Qioo =0.75x7.25x0.15x1.25=1.04c.fs.<1.47
PT."B" Q2 = 0.95x2.50x0.08x1.00=0.19c.fs.
Qioo = 0.95 x 7.25 x 0.08 x 1.25 = 0.69 c.fs.
PT. loci Q2 = 0.79 x 2.50 x 0.04 x 1.00 = 0.08 c.£s. < 0.11
Qioo =0.79x7.25x0.04x1.25=0.29c. s.<0.39
PT.'D" Q2 = 0.72 x 2.50 x 0.16 x 1.00 = 0.29 c.£s. < 0.34
Qioo = 0.72 x 7.25 x 0.16 x 1.25 =1.04 c.fs. < 1.25
PT. "E" Q2 = 0.92 x 2.50 x 0.15 x 1.00 = 0.35 c.£s. < 0.43
Qioo = 0.92 x 7.25 x 0.15 x 1.25 =1.25 c.fs. < 1.57
THEREFORE, THE PROPOSED CONDITION WILL NOT ADVERSELY EFFECT THE
EXISTING FACILITIES.
STORM DRAIN SIZING
Q Design = Qioo = 0.69 c.f.s. Q 15" dia. =1.486(1.23X0.31)*0.6640.0089 = 6.1 » 0.69 OK
0.013 1 /
THEREFORE USE W DIA. STORM DRAIN PIPE V
Page 4 of 5
Client: MBI Corporation
By. DRM
INLET SIZING
Inlet in Sump Condition
From Fig. 5-2 @yo/h=1.0 & h=0.5
Q/L = 1.1
w/L=4'
Q=4x1.1=4.4c.f.s.
From Fig. 5 - 4 Reduction Factor = 80%
QDesign=0.80x4.4=3.5»0.69 M
Project No. GRD-107-93
REVISED: Oct. 14, 1993
THEREFORE THE STANDARD 4' CURB OPENING INLET IS ADEQUATE
Page 5 of 5
RAINFALL PERFORMANCE STANDARD EVALUATION
PROJECT: LEWAN & associates STANDARD FORM A
OMPLETED BY: Dennis Messner DATE: Sant- in 19
DEVELOPED
ERODIBILITY
ASb
Lsb
Ssb
Lb
Sb
PS
SUBBAgIN .
ZONE
(ac)
(ft)
(t)
(feet)
($)
($)
Moderate
0.497
100
4.2
81.8
MARCH IDS 1 8-14 DESIGN CRITERIA
EFFECTIVENESS CALCULATIONS
PROJECT: LEWAN & associates STANDARD FORM B
COMPLETED BY: dennis Messner DATE: Sept. 10, 1
Erosion Control C-Factor P-Factor
Method Value Value Comment
Bare Soil 1.0 1.0
Structure (Foundation) 0.01 1.0
Silt fence 1.0 0.5
Sediment Trap 1.0 0.5
MAJOR
PS
SUB
AREA
BASIN
(t)
BASIN
(Ac)
CALCULATIONS
Construction period considered as worst case at the
time that the structures foundation is in place and
major construction beginning
Wtd "C" = [(20,155 x 1.0) + (1,500 x 0.01)] / 21,65
= 0.9
Wtd "P" = 0.5 x 0.5 = 0.25 - 0.3
Eff. _[ 1-(0.9x0.3) 1x100=73<81.8
Therefore request variance since this is all that
can be done and effectively work on the site.
Please note that the site has been considered as
one total area rather than the five separate basins
due to its small size. All possible measures have
been incorporated into the plan that will be
practical to.implement.
)3
MARCH 1991 8-15 DESIGN CRITERIA
CONSTRUCTION SEQUENCE
^ROJECT:• LEWAN & associates
STANDARD FORM C
SEQUENCE. FOR 19 93 ONLY COMPLETED BY: Dennis Messner DATE: Sept. 10, 1993
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 (Structure)
VEGETATIVE:
Permanent Seed Planting
Mulching/Sealant
Temporary Seed Planting
Sod Installation
Nettings/Mats/Blankets
Other
1993 1
1 Sept Oct.1 Nov J Dec l I I I I I
xxxx
NOT APPLICABLE
xxxxxxxxxxx
xxxxxxxxx
ti
----------------------------------------------------------------------------------------
STRUCTURES: INSTALLED BY MAINTAINED BY
VEGETATION/MULCHING CONTRACTOR
SATE SUBMITTED APPROVED BY CITY OF FORT COLLINS ON
4I/SF-C:1989
STORMWATER DETENTION SUMMARY
SITE DRAINS TO SPRING CREEK BASIN
GROSS SITE AREA = 26,000 SQ.FT. = 0.597 ACRES ±
GROSS SITE AREA INCLUDING ADJACENT STREET R-O-W = 26,000 SQ.FT: 0.597 ACRES ±
NET SITE AREA EXCLUDING ADJACENT STREET R-O-W = 21,655 SQ.FT. = 0.497 ACRES ±
HISTORIC "C" = 0.90
DEVELOPED "C" = 0.83
CRITERIA BASED DETENTION VOLUME = NOT APPLICABLE
PLAN DETENTION VOLUME = 0
MAXIMUM DEPTH OF DETAINED WATER = NOT APPLICABLE
PEAK DISCHARGE, Q = 1.25 ± c.f.s.
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is
WOUIREMENTS
AS
CITY OF Fast COLLISS. COLORA
sent
EU
1. yas Mal storm sews and water line wnalrunbn :hall cl 10 CRY m Fiat
Como: a w. ds and w.pell li o ¢u.rem at dale By emamm PO the Development prmm ll-
»dalmnq la this M. L ccBang rears enerngy ears anet n den Of me
Dnelapn.m APeeIMo� a elf rpul a e n ul the Bans dr me Dlnctor N uglo»rN, }
Ann may IMMUM that mq m made b m omen m the slenda,da ear speaeGnms muenl at that
2. shear p 110 shall rot van until the Saie Begrl was Pavement Earsurn era KW Wed by me 13. If 0»alarlp is Coed m IaalNu msideg on of armies or omr WnpNrMnY end ulna
ponder of EN",,y Wed subi wmprlbn testa en IYen Brad epxrrned. M aledW wastewater b b M ape harped Into A shoo "war, tllenM. YlElalbll d\'11, M Any
w lms or Be united &bars, a Slate-Demwrbq W»lewvm D ranee Nr b rpliN.
3. The stye, me bulb, was number 01 ell known unWg,Wnd ur14ara s e O,lmele n w sMon
Na mrys. II shell Can resm,m alitr of the ContraMr IS relay, the etivente b and mlbn 01 IC Ncrn I mnslrusclaR105 must mmBy with ma 51a1a of CobrMa permNiw process der
aM
All undegrourd amities along the route 01 me rod. Forever mmmeroinq new wnsthalbn, the I9oemwaler Dona s Asamalr filmPAmtn fin A ,ty- For Mbrmenon, please ccnlxl ma
COnlractar shell Y peripheral der unknown Ume,grour uWitles. CW Dmanmenl of Walla. Water Clualite Camrd uMebn, WOCDI+EB2. CMrry Creak 0.M
BmM. Banner Cobrado Sol Anenlbn: Pernals and EMMMm SMbn Telephone Ia011
The Engmeat who has p,epa,r Me" plansa exel aMO, seal Al does harm .nnm e92 Base.
escosaa5wblhmry m yea Cryl r d Abdulry of sit Engineers Gwlmny shal ySet ref eve N¢ omissions 5. The COi Seat W" r6a ns,Be b ",a end Immmam all r Wruu'Tral6a Ck)l
p mIIDfore firmesheen,n1E d ssmer
TOO has prepared these plans Of all such reslrnsibily S a CC VY snap p m work YNrdiy to ad Ciry, CountySaba, SM1Sao Federal safety
5. Waen an "way "NOW minAT m t mE Me "ut ull he mSAyAd SO mnarron peat m of Tp MAM tpulafbns. In Tenet me'i Sq.m am room EsuvWOn' Waralbna are orNeer man n$ ari ," Condition The ereel asing "MMlmn seal W d mem"d fir me ear aamM/ *.In a currant 0 6H A. maualory mammmenb.
Co,SiMb led or Nbre any cute are mad. PalOa s N dsne b mnbrmap w m. gb»rutq
City of Tom
0 Birds pciW$ shall) BY w m wife aen a p ft myynBaasinbmrming Ml ham Ier 1). pn,sMyrbe IR u-0mmdoonnatat iN uofn1 ME55uEF Engomnnq Aim-w^sua blirolar::WmW.olo�
"IstNp { SIEly. h, On, on mu oleo Site, b ma s Whig Perry of any
1 Ina r mmBian Y
warn trove men an M is Coed, en Meday of IN rWe su"N wW4lrcludiy Ina postcard area, s a p 1a, Iwr 10r ce
may BY mytrW. The dla'mmaibn of need der a mmpble OrMay 61aA N made fir the Director of of my hi s f ng M mn"t R E WIN. Exam
bA Mike evrtiu m wniml al tnd safely or Mpuery
Engineering. the
ray Ili sl n of Me Won mwtw q. brmf a Omer wan axis usN in w adul ma poison or n
he suPa+isbn of Me elonman(mIM.
6. Prior AT m" mis AT aM of any Con. Find Ma 0e Me Cry or shay mood all u9 $It mmpenbi _
vq dpeNnenlsbaadireb W,edules, and Mal me Clrf ForrtarbsllMub afills Myxtbn 16. Protect Engineac M0 S. A� Snea1O Whale This
for any see mmmal r"quiNq a pwmif. foreland, Cabral 6R36
]. Prior to IM commefcemenl of any mnstrwibn. the Conlracb shall eme the City Erearea rag Tele'. 301 6632221
Depanmenl mWq Eyes too Inal seams sir e. It, Bertmet ul flommast Bw1e1 Nn Can fire Thee lc led at the Fb Chown Turner of
B. prior AT the mmmrcemeni m Mr mnmudbn that win MM InniO signs of Any IYw. Its E Prnspcl 5L and Pamiym, A. Elralon - 45 As
Cameroon "hall m W the City o1 Fan Collins StFMa Dvlibn, vrM AM Iammnrllf remove of
reb le IM "Ian a1 Me Cast AS IM COnl Mor: Mwwar, it MAN ConVe r Saves IM Yana 591 20, STUFV DVOfYf,EdERfFNPH1KlFgTF.6.
mmsenthe cmmaor my N an.,pM Bar me IW>L mrl.nan aM rub nrl m mm.IM We aqn A As mrmled By the Cry conssumon In p o,. me Commoner area pi An equymem,
rnrdt twit WAS ham, rev SW AT dean miss and dears Secured onto me adiamntdeiali,g I
AN damaged e1151119 am, I aM $v * Mae N feWi may to amM2rc of mmplabd Ilreel(el.
Improvements. B. ThA UnUMw area maul and maintain a -Sall Fez: m me b WO(s) snorm on the Ban.
10. An im er of anvu awagA lrailw Mall N the ,aamna q a me p M awnw. The meet of Me'SIM Free' b to p'"vent udlnlem and mass fmm Mwup Onto AS edlamM
pmno during the Monad o1 m,.uw den tone, Open eni Bananas "it My' BUT
11. Lpon
a ImtlM 9bo Mmestbn Of she
MI the A (I and Reason
pr mealbnsf It pow WO 4 me When Oman sulxr are PE»n
the dt a wimeni My be cafflw In Rare aM.lThe 'SiX Faze' win Metpnlrp only Outirq Its
won In
Prolr4atal Ent IplSlwr T m" SM1r 01 CObtvb. TM uaa "must N 5b MM AT wA
gql W by IM Slwmwalet pliliry plan IO the reaaH OI a COMM W d � Pp . C IDS amr,Camircl rs haw'wlafas iM aatr on the
a ywn. Tea Sediment i g se' are to remaN In
12. MNlmuse Carer eve, water Imes Is 41rd feel ear maximum Mayer a 5-II21MT Mau motion me ^mnsinA n Beard r red AN reo Marmon generous are Vessel.
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EX/I 577RUCTURE
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Gross mEMr .s,ar BO.n. 075 ACRES
Gfi�S BrrEAPFA EL11gN3 AONCEM 5IREEiPDW -Y.Wn "A.Fa.-OEtGICRESt
uETETEAIVA EACttIdN]ANACEMSTREU All -221 WRIN)Cr. OsaIACRESt
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CLIENT APPROVAL
BY:
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LEGEND
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Eamlre strew contour
03—
Proposed Indent Surface Contour
e 3565
Proposed Spat Elevellon of Finish Surface
(91e3)
lisp Spat Elmlbn At Sunau
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Proposed cure
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slit Fence
Limit of Drainage Basin
. TOP ep 46
Finally 411 Elevation of Pavawnt Warfare
T o. 6. 90.20
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ROPOSED CONDITIONS
DRAINAGE EXHIBITVOIA
REFER TO APPROVED Rok+No.'.
RGIRDlO93
CONSTRUCTION PLAN SHEET
1
-NW Carney SeNron24, T7N, R69W
E. PROSPECT ST.
I' III Sewer Manhole
I W I Rim Elev = 498873 _
t I II
cx'sl/5"Go Storm Dram
—I-----+----15"SD----� —__—,
N Line SectionIV a
4—
er tyw-. p.ilsar 1 ~
•� E� Exrsr Storm M/ei Exist /D"Saneary Serer-uqqc' - u /
T P RunE/e =49BB O Asphalt Sur/and Roodwoy ey Evil Burred
.D';lf 3 /ne Etee-49B62t [e767 f 5�1 fe15O M rrephcve
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-BB'2%2T I i/P..... 0 fez orrm.ar c r. -'.• _ � . c... - -
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Exist F Hyd n/ Exist M ribc Vert Curb, -I I
GallerB St we/F e
{88.09 xis/. rds,
o 9 o S lord w/ Masr Arm LOT
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p in Sign Ex;II t Sur/ace ae r
m' y 1\ t /43 /O' oamrrnrvi A
o 'k {9900- \r Ter fbd ah/y RWe oru rei phone
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all
4ltppab I LDT 2 �( / e J n !■ �I I
Benchmark: Northeast Bonnet Boll on Fire Hydrant located at the
Northeast Corner of Remington St. and E. Prospect St.
Elevation = 4990.45
CEIN weL Ntyl'FV'
1. The existing utility lines end structures as shown hereon have been identified
through the insistence of the local utility companies. The information indicated
may not include all existing utility lines. structures. etc . Therefore, before
cavating within the area depicted. the Contractor shall Geld verify the location of
all existing utility lines, structures and apyurteriancen.
2. The properties d p cted on thus drativing include Lute 12 3, 4 d 5 Block I of I. C.
Bradley s Adchtno w the City of Fort Collins, Colorado The properties depicted are
subject to all comments and rights-oftway of record.
3. This ' Exhibit p nt the results of a field survey p d by Hall &
Associates, IncA separate plat map and record of survey is availablethrough Hall
& Associates, Inc. that depicts the boundary of the subject properties
0 101 ZO a0
scale: I•= z0'
3 Q (e796T�t
1- Single Story 4 r that
4 Masonry Structure s AsphaB _ 1 E
�3- w/Wa/kW/Basement 7 eaz LOT 3 r `Il m'L
^Main FbarEbv 4992fY Ji`I col BLOCK I
Lover Gloa Ele =49B4N QIo
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Ca 6 RIrFNy//—� 9U/rL/yI `I -' Pole %Oebai Te/e: hOM
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wo .. Service ice A
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LOT ST I Storm Dram Manhole
rm
l6"5>uc Rim Elev = 49845•
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uI nn ee= 96 I
` nv Else = 9974979+
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CLIENT APPROVAL
By:
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DATE
Area
1991
Alp
A.
KkAve,
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No...
GRID
107-93
SHEET
of