HomeMy WebLinkAbout990843.tiff Windsor Fire Department
728 Main Street
Windsor , Co.80550
Mr. &Mrs. Chuck Schnuerle
1261 95th Ave.
Greeley, Co. 80634
March 28,1999
Dear Windsor Fire Department,
My Wife and I have been approved by Weld County Planning Board to construct a
self storage unit that will consist of 150 to 200 units on the north side of our property.
This letter is to find out what concerns you may have with this project and to be able to
address those concerns. Please advise us to any concerns you may have.
Sincerely,
>4-442
Weld County planning Dept,
1n944
P ECE VED
EXHIBIT
990843
i rim WERNSMAN r ,,, _. .
1 Iiimi ENGINEERING, I JG. n , 7
710 11""AVENUE SUITE 201 • GREELEY, COLORADO 8Q631,,.
Phone (970) 353-4463 Fax (970) 353-9257 T
DESIGN OF SEWAGE DISPOSAL SYSTEM MODIFICATIONS
FOR
CHUCK AND GAIL SCHNUERLE
COMMERCIAL DEVELOPMENT
(SELF STORAGE BUILDINGS)
1261 95th Avenue
Greeley, Colorado
April 12, 1999
Project No. 99-538-01
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INTRODUCTION
The site is located at 1261 95th Avenue, Greeley, Weld County, Colorado, on the
west side of 95th Avenue approximately 'A mile south of Hwy. 34 Business. The
site is not in the city limits of Greeley. Currently there is a two bedroom
farmhouse on the property which uses an existing septic system. The area north
of the house is planned to have a commercial development consisting of self-
storage units. The planned development will have four buildings with a total of
approximately 180 individual storage units. One restroom is planned for the use
of the business patrons. The intent is to tie the new restroom into the existing
septic system.
The purpose of this study is to determine if the existing system is working
properly and to determine if it has the capacity for the additional restroom load,
and if not then to design a practical renovation to the system.
It is anticipated that each individual storage unit will be visited by one person
every two weeks average, and that this person will use the restroom on half of
his visits. Further it is anticipated that 5 gallons of water will be used at each
visit. So the anticipated average water use will be (180 x 5) / (14 x 2) = 32
gal./day. For design purposes, an average flow of 50 gal./day will be used.
The source of water for the facility is an oxisting wolf. C 1117 err Gred? , ,A.Cv
OBSERVATIONS
A percolation lest was conducted by Wernsman Engineering, Inc. on April 9,
1999. The test showed an average percolation rate of 5.5 min./inch. An eight
foot deep test pit was also observed for soil conditions. The test pit was
observed more than 24 hours after it was opened. The soil profile consists of
silty sand for the full depth of eight feet. No ground water or other limiting zones
were observed. Measurements for locating the existing system were also
performed.
The existing system consists of a 1000 galllon concete septic tank and 100 lineal
feet of 3 ft. wide absorption trench. The ends, junction, and much of the trenches
were uncovered for inspection. The observation pit also allowed for inspection of
the bottom of 1:he trench at the west end. See Site Plan. The system appeared
to be performing well. The trenches appeared to be dry.
Page 2
PERCOLATION RATE
The average percolation rate used in the design is 5.5 min./inch.
FLOW
House (2 bedrooms)
Average flow= 4 persons x 75 gal./person/day = 300 gal./day
Commercial (180 self-storage units)
Average flow(see introduction) = 50 qal./dav
Total Average Flow = 350 gal./day
Peak flow(150% of average)= 525 gal./day
SEPTIC TANK
Retention time = 30 hours
Tank volume required = 525 x 30 /24 = 656 gallons
ABSORPTION TRENCHES
Trench area required = 525 x 5.5 / 3.5 = 352 sq. ft.
CONCLUSIONS
Based on my observations and calculations, it appears that the existing system is
working well but does not have the capacity to add the commercial restroorn.
Also, it appears that the existing west trench will interfere with the planned
building location. Therefore I recommend the existing west trench be abandoned
and new absorption trenches be added as shown on the enclosed plan.
Page 3
SPECIFICATIONS
1. Septic tank— Use existing 1000 gal. tank
2. Absorption trench size— Use 50 feet of existing 3 ft. wide trench and 67 feet
(min. of new 3 ft. wide trench.
3. Gravel for new trench — 12" (min.) of clean gravel from %" to 21/2" in size.
4. Backfill material — On site silty sand.
5. Distribution Box— Installed to provide equal distribution of the effluent to each
line.
6. Leach line•-3 or 4 inch diameter perforated plastic pipe. Install with 6° min.
gravel below pipe and 2" min. gravel above pipe. Install to provide even
distribution over the entire length of trench. All construction shall be in
compliance with the Weld County Health Department and State regulations.
7. Cover- Untreated building paper, straw or filter fabric placed over the clean
gravel to prevent the system from becoming clogged.
8. Any deviations from the specifications shall be approved prior to construction
by Wernsman Engineering, Inc.
9. The system shall be inspected by Wemsman Engineering, Inc. and the 'weld
County Health Department during critical parts of construction.
10.Provide positive surface drainage over the system by sloping the finish grade.
11.The top of 1:he trenches should be seeded or sodded. No part of the trench
system should be covered with gravel or pavement nor should it be driven
over. Trees or shrubs should not be planted in the general area of the
system.
12.It is important that tractor tread compaction of the soils at the bottom of the
trench be minimized so that the filter soil does not become impermeable for
absorption. If this soil does become compacted, it should be loosened prior
to placement of the clean gravel.
13.Backfill and regrade area over the system system as may be required to
provide a minimum of one foot and maximum of two feet of backfill over the
gravel.
14.The system installer shall provide as-built plan to the Owner, Engineer and
Weld County Health Department.
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SLIM' S SANITATION INC
A-1 DRAIN SERVICE
ROTO-ROOTER of WELD COUNTY
P O BOX 357
La SALLE CO 80645-0357
( 970) 284-6951
1-800-728-6951
WORK ORDER
CUSTOMER WORK ORDER # : 9207
RGAK DATE ORDERED: 05/01/96
1261 9I5 . LAVENE5TH AVENUE DATE WANTED : 05/03/96
1261 9 ORDERED BY : LAVONE ROGAKIS
GREELEY 52 941a CO 80631 TERMS : COD
3P.O. NUMBER :
35 JOB NUMBER :
SALES PERSON : RICHARD KLINE
ENTERED BY : DK
TANK : 1-SEP 1261 95TH AVE
TANK ADDRESS : 1261 95TH AVENUE TANK C/S/Z : GREELEY CO 80631
HOSE REQ' D UTE
SIZE v ~�'
LAST SERy JCE : /.� BY ' !`/c.• 5 �Loc
NEXT SERVICE Cr./ _f
LOCATION /oat C -. 1 � t.
REMARKS •
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INSTRUCTIONS Nor h of house.
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SERVICE ORDERED: SERVICE PERFORMED - BY - DATE
LT LOCATED TANK
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UC UNCOVERING CHARGE - `-- --
SEP SEPTIC TANK _ ,
ENTER TANK LOCATION SKETCH BELOW
Windsor-Severance
Fire Protection District
April 12, 1999
Mr. And Mrs. Chuck Schnuerle
1261 95th Avenue
Greeley, Colorado 80634
Dear Sir and Madam:
This letter is in response to your inquiry dated March 28, 1999. It is our
understanding that you are intending to construct 150 to 200 storage units. From your
correspondence, I do not have a clear understanding of the address or location of the
proposed site, nor will the district be able to specifically respond to concerns without
the plot plan depicting the proposed project.
In general, the Windsor-Severance Fire Protection District has adopted the 1994
edition of the Uniform Fire Code. The contents of this code will dectate the required
fire flows necessary to have available on site, based on the construction type and
square footage of the structures. Additionally, the code will address access to the
property, distances between structures and any exposures we might have to protect in
the event of fire. We will also discuss items or materials that should not be allowed to
be stored in the buildings.
We will be able to better address the code concerns when we receive a copy of
the proposed plot plan. As this is developed, we will be available to assist with
questions you may have.
Respectfully, L /
�i
rry Ward
Division Chief
CC: Schnuerle File
ph 970.686.9596 :QS Fx 970.686.9623 ep 728 Main Sired ""134 Windsor,Colorado 80550
April 10,1999
City of Greeley Planning Commission
1100 10th Street
Greeley Co. 80631
Dear Members of the City Planning Commission,
This letter i:s an attempt to address the concerns you have with the proposal of building one hundred
and fifty to two hundred self-storage units at 1261 95 Ave. in Weld County.
You stated that you wanted the area paved with concrete or asphalt. We plan on paving but not right
away. We live on a dirt road and are planning on building in two stages. Until we do pave we will use a
dust suppressant to keep the dust to a minimum on all driveways,parking areas and loading zones.
Your third statement about the buildings which are visible from the exterior of the site,we have no
idea what the design review portion of the City of Greeley Development Code is. If you would like to send
us some suggestions,we would be glad to look at anything you think is a good idea.
To the best of our knowledge the Weld Planning Board has tried to contact the Colorado Division of
Wildlife and has not heard back from them. We are talking about two and a half acres. Right now it is
unused pasture grass.
We will follow all building and fire codes. We are investing a lot of money and the last thing we
want to have happen is for it to burn up.
Enclosed please find the plat for the landscaping with correction made on it. We will be living right
next to the site and will keep the area clean,watered,mowed and in good repair.
We would like to take this opportunity to thank you for time and consideration in this matter.
Chuck Schnuerle
Gail Schnuerle
CC: Weld County Planning Commission
PRELIMINARY DRAINAGE REPORT
FOR SCHNUERLE MINI STORAGE PROJECT
WELD COUNTY, COLORADO
Prepared for
Commercial Building Systems
2347 West Eighth Street
Loveland, Colorado 80537
April 15, 1999
Commission No.: 3022-08-01-01
Prepared By
FOUNDATION ENGINEERING
CONSULTING ENGINEERS, LTD.
5110 Granite Street
Loveland, Colorado 8O538
FOUNDATI ON I Consulting
ENGINEERING Engineers, Inc.
April 15, 1999
Commission No.: 3022-08-01-01
Commercial Building Systems
2347 West Eighth Street
Loveland, Colorado 80537
Gentlemen:
Enclosed is the preliminary drainage report and plan for the four proposed mini-storage buildings
to be constructed in Weld County at 1261 95th Avenue.
Briefly, a high point is shown at the south end of each building, and flows will be directed between
the buildings to the north property line to a concrete trickle channel. The trickle channel will direct
flows to the northwest corner of the site and then to the existing retention pond in the adjacent field.
You will need to have the adjacent property owner sign the included form acknowledging acceptance
of the increased runoff.
If you have any questions, please feel free to call.
Respectfully, k pitenn et
Jason E. Baker,
Civil Engineer
,`
Reviewed by: ,��°/g''�i-Ctr '
O
James A. Cherry, F.E. °•°
FOUNDATION ENGINEIzG„CONSULTING ENGINEERS, LTD.
/1/4 ' )!�.r, . '• `///1. f ;.
JEB/jle
5110 Granite Street, Suite D',Loveland, Colorado 80538 •(970)663-0138 •Fax(970)663-1660
500 Kimbark Street, Suite 101 .Longmont, Colorado 80501 •(303) 702-0661•Fax (303) 774-8413
INTRODUCTION
This Preliminary Drainage Report is being prepared in conj unction with a preliminary drainage plan
for the development of four proposed mini-storage buildings to be constructed in Weld County,
Colorado. The site is located at 1261 95th Avenue, west of Greeley. The site is surrounded by
agricultural properties. Refer to the vicinity map on the Special Review. This report has been
prepared to meet the requirements of the City of Greeley Storm Drainage Criteria Manual as they
apply to this project.
METHODOLOGY
The Rational Method will be used to develop runoff volumes for this project. The Rational Method
is an excellent predictor of flows in drainage basins less than 200 acres.
HISTORIC FLOWS
Off-site flows have little impact on this site since the south end of the mini-storage area is at the crest
of a small hill. Historic flow on this site is from south to north where flows run into an adjacent
field. All runoff from this site and the two adjacent fields flows into an existing retention pond off
the northwest corner of the site. The retention pond is surrounded with dense weeds, grasses, and
cattails.
PROPOSED DRAINAGE IMPROVEMENTS
As shown on the proposed drainage plan, all runoff will continue to flow south to north on the
property with high points at the south end of each building. A concrete trickle channel will be
1
constructed along the north property line, directing flow to the northwest. From the corner of the
property, the pan will cross the existing service road, and then runoff will flow overland to the
existing retention pond in the adjacent field. No on-site detention will be provided. Calculations
are provided showing the increase in runoff from historic to developed conditions for the effected
area.
An existing irrigation ditch along the south end of the area to be developed will be relocated
approximately thirty (30) feet to the south per the contractor and owner's specifications. Portions
of the ditch may be replaced with concrete pipe of equal or greater volume.
CONCLUSIONS
1. The site does not sit in a regulated flood plain and is not subject to severe floodin.g problems.
2. An existing retention pond will collect runoff from the site as it has done historically.
HISTORIC RUNOFF
Area= 2.03 acres
Historic Run-off Path= 260 feet south to north
Slope= 3.12%
Historic Coefficient of Infiltration
C = 0.2
2
Time of Concentration(Tc) from Figure 3.2, Page 6
Tc = 21 minutes
Intensity from Figure 3.3, Page 7
15 = 2.8 inches/hour
1100= 5.22 inches/hour
Q = CfCIA
Q5 = (1.0)(.20)(2.8)(2.03) = 1.14 cfs
Quo' (1.25)(.20)(5.22)(2.03) = 2.65 cfs
*Flows are sheet flow off north end of site.
DEVELOPED RUNOFF
Flow Path= 500 feet
Developed Coefficient of Infiltration
(NOTE: Approximately 84.2% of the site is to be rooftop or recycled asphalt.)
C = (0.158)(0.2)+ (0.842)(0.95)= 0.88
Time of Concentration
Tc= L/180 + 10 = 500/180 + 10 = 12.78 minutes
Intensity from Figure 3.3, Page 7
IS = 3.68
Iloo= 6.86 inches/hour
Q5 = (1.0)(.83)(3.68)(2.03) = 6.2
Q10,5 = (1.25)(.83)(6.86)(2.03) = 14.45 cfs
3
EROSION CONTROL
Straw bale dikes and silt fences should be used to prevent erosion during construction. The dikes
should be constructed at fifty (50) feet on center in all swales and concrete pans. We recommend
a silt fence along the north and west property lines during construction or until landscaping or paving
is established. A tracking pad should be placed at the entrance of the site during construction. All
erosion control measures should be constructed in accordance with standard Weld County details.
Follow Best Management Practices in the development of the site. .
4
RUNOFF AGREEMENT
I, Douglas L. Tierne, give permission to Charles and Gail Schnuerle to release runoff from their
Mini Storage facility at 1261 95`° Avenue, Greeley, Colorado onto my property. I understand that
the runoff will be larger than historic flows and will go into the existing retention pond on my
property off the northwest corner of their site. It is also my understanding that the concrete trickle
channel that will be constructed on the north property line of the Mini Storage site will extend across
my service road in such a way that it can easily be driven across. Also, it is understood that the
Schnuerle's (or future owners) will be responsible for the maintenance of the concrete trickle
channel.
Douglas L.Tienne, 1525 95th Avenue,Greeley
5
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20 2 2.86 3.38 4.03 4.81 5.34
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30 1.64 2.35 2.78 3.22 3.97 4.39
40 1.34 1.92 2.27 2.7 3.23 3.59
50 1.16 1.66 1.96 2.34 2.8 3.1
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80 0.8 1.14 1.47 1.61 1.91 _ 2.16
100 0.67 0.94 1.2 1.3 1.58 1.79
120 (2 hr) 0.58 0.8 0.96 1.14 1.3 _ 1.5
150 0.49 0.66 . 0.78 0.93 1.1 _T 1.23
180 (3 hr) 0.42 0.56 0.67 0.8 0.92 1.05
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PRELIMINARY DRAINAGE REPORT
FOR SCHNUERLE MINI STORAGE PROJECT
WELD COUNTY, COLORADO
Prepared for
Commercial Building Systems
2347 West Eighth Street
Loveland, Colorado 80537
April 15, 1999
Commission No.: 3022-08-01-01
Prepared By
FOUNDATION ENGINEERING
CONSULTING ENGINEERS, LTD.
5110 Granite Street
Loveland, Colorado 8O538
( 4. EXHIBIT
# G
use kV!
FOUNDATION I Consulting
ENGINEERING Engineers, Inc.
April 15, 1999
Commission No.: 3022-08-01-01
Commercial Building Systems
2347 West Eighth Street
Loveland, Colorado 80537
Gentlemen:
Enclosed is the preliminary drainage report and plan for the four proposed mini-storage buildings
to be constructed in Weld County at 1261 95th Avenue.
Briefly, a high point is shown at the south end of each building, and flows will be directed between
the buildings to the north property line to a concrete trickle channel. The trickle channel will direct
flows to the northwest corner of the site and then to the existing retention pond in the adjacent field.
You will need to have the adjacent property owner sign the included form acknowledging acceptance
of the increased runoff.
If you have any questions, please feel free to call.
Respectfully,
p" ann er,i9= B''�vi
Jason E. Baker,
Civil Engineer
Reviewed by: F
James A. Cherry, P.E.
FOUNDATION ENGINE1ltG,CONSULTING ENGINEERS, LTD.
JEB/jle
5110 Granite Street, Suite D•Loveland,Colorado 80538 •(970)663-0138 .,Fax(970)663-1660
500 Kimbark Street, Suite 101 •Longmont, Colorado 80501 .(303) 702-0661•Fax (303) 774-8413
INTRODUCTION
This Preliminary Drainage Report is being prepared in conjunction with a preliminary drainage plan
for the development of four proposed mini-storage buildings to be constructed in Weld County,
Colorado. The site is located at 1261 95`h Avenue, west of Greeley. The site is swrounded by
agricultural properties. Refer to the vicinity map on the Special Review. This report has been
prepared to meet the requirements of the City of Greeley Storm Drainage Criteria Manual as they
apply to this project.
METHODOLOGY
The Rational Method will be used to develop runoff volumes for this project. The Rational Method
is an excellent predictor of flows in drainage basins less than 200 acres.
HISTORIC FLOWS
Off-site flows have little impact on this site since the south end of the mini-storage area is at the crest
of a small hill. Historic flow on this site is from south to north where flows run into an adjacent
field. All runoff from this site and the two adjacent fields flows into an existing retention pond off
the northwest corner of the site. The retention pond is surrounded with dense weeds, grasses, and
cattails.
PROPOSED DRAINAGE IMPROVEMENTS
As shown on the proposed drainage plan, all runoff will continue to flow south to north on the
property with high points at the south end of each building. A concrete trickle channel will be
1
constructed along the north property line, directing flow to the northwest. From the corner of the
property, the pan will cross the existing service road, and then runoff will flow overland to the
existing retention pond in the adjacent field. No on-site detention will be provided. Calculations
are provided showing the increase in runoff from historic to developed conditions for the effected
area.
An existing irrigation ditch along the south end of the area to be developed will be relocated
approximately thirty (30) feet to the south per the contractor and owner's specifications. Portions
of the ditch may be replaced with concrete pipe of equal or greater volume.
CONCLUSIONS
1. The site does not sit in a regulated flood plain and is not subject to severe flooding problems.
2. An existing retention pond will collect runoff from the site as it has done historically.
HISTORIC RUNOFF
Area= 2.03 acres
Historic Run-off Path= 260 feet south to north
Slope= 3.12%
Historic Coefficient of Infiltration
C = 0.2
2
Time of Concentration (Tc) from Figure 3.2, Page 6
Tc = 21 minutes
Intensity from Figure 3.3, Page 7
I5 = 2.8 inches/hour
Iwo = 5.22 inches/hour
Q=C,CIA
Q5 = (1.0)(.20)(2.8)(2.03) = 1.14 cfs
Qwo=(1.25)(.20)(5.22)(2.03)=2.65 cfs
*Flows are sheet flow off north end of site.
DEVELOPED RUNOFF
Flow Path= 500 feet
Developed Coefficient of Infiltration
(NOTE: Approximately 84.2% of the site is to be rooftop or recycled asphalt.)
C = (0.158)(0.2) + (0.842)(0.95) = 0.88
Time of Concentration
Tc = L/180 + 10 = 500/180 + 10 = 12.78 minutes
Intensity from Figure 3.3, Page 7
IS = 3.68
Loo = 6.86 inches/hour
Q5= (1.0)(.83)(3.68)(2.03) =6.2
Qioo = (1.25)(.83)(6.86)(2.03) = 14.45 cfs
3
EROSION CONTROL
Straw bale dikes and silt fences should be used to prevent erosion during construction. The dikes
should be constructed at fifty (50) feet on center in all swales and concrete pans. We recommend
a silt fence along the north and west property lines during construction or until landscaping or paving
is established. A tracking pad should be placed at the entrance of the site during construction. All
erosion control measures should be constructed in accordance with standard Weld County details.
Follow Best Management Practices in the development of the site. .
4
RUNOFF AGREEMENT
I, Douglas L. Tienne, give permission to Charles and Gail Schnuerle to release runoff from their
Mini Storage facility at 1261 95th Avenue, Greeley, Colorado onto my property. I understand that
the runoff will be larger than historic flows and will go into the existing retention pond on my
property off the northwest corner of their site. It is also my understanding that the concrete trickle
channel that will be constructed on the north property line of the Mini Storage site will extend across
my service road in such a way that it can easily be driven across. Also, it is understood that the
Schnuerle's (or future owners) will be responsible for the maintenance of the concrete trickle
channel.
Douglas L.Tienne, 1525 95th Avenue,Greeley
5
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Table 3.3. Extended Duration-Intensity-Frequency Tabulation, Greeley, Colorado.
S • 5 StQrriM. xeguenty ,
d es p IOv.: 't5y goy .4100
q Ar A /,ti5 mm 3.62 5.19 6.12 7.31 8.73 9.67
10 2.81 4.02 4.75 5.67 6.78 _ 7.51
15 2.37 3.4 4.01 4.79 5.72 6.34
20 2 2.86 _ 3.38 4.03 4.81 _ 5.34
25 1.77 2.54 _ 3 3.58 4.28 4.74
30 1.64 2.35 _ 2.78 3.22 3.97 4.39
40 1.34 1.92 2.27 2.7 3.23 3.59
50 1.16 1.66 1.96 2.34 2.8 3.1
60 (1 hr) 1.04 1.49 _ 1.76 2.1 2.51 2.78
80 0.8 1.14 1.47 1.61 1.91 2.16
100 0.67 0.94 _ 1.2 1.3 1.58 1.79
120 (2 fir) 0.58 0.8 0.96 1.14 1.3 1.5
150 0.49 0.66 _ _ 0.78 0.93 1.1 1.23
180 (3 hr) 0.42 0.56 _ 0.67 0.8 0.92 1.05
4 hr 0.33 0.44 0.53 0.62 0.72 0.81
5 0.27 0.36 _ 0.43 0.5 0.57 0.66
6 0.23 0.3 _ 0.37 0.43 0.49 0.57
8 0.2 0.24 _ 0.29 0.34 0.39 0.44
10 0.15 0.2 _ 0.24 0.29 0.32 _ 0.36
12 0.13 0.17 _ 0.2 0.25 0.28 0.31
14 0.11 0.15 _ 0.18 0.23 • 0.24 0.27
16 0.1 0.13 _ 0.16 0.2 0.22 0.24
18 0.09 0.12 - 0.14 0.18 0.19 0.21
20 0.08 0.11 _ 0.13 0.17 0.18 0.19
22 0.07 0.1 0.12 0.16 0.16 0.17
24 0.07 0.09 0.11 7 0.14 0.15 I 0.16
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(460 a \c Allig TO: Board of County Commissioners
FROM: Julie Chester, Lead Planner
1119 €
DATE: May 12, 1999
SUBJECT: Changes to conditions
COLORADO
The following are changes to the conditions of approval:
Add: 2.B.4) The revised circulation plan
Change: 2.B.2) To say detention rather than retention.
UEXHIBIT
w
(ASQ'#12111
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