HomeMy WebLinkAbout20053344.tiff Todd Hodges Design, LLC
Sierra Acres
Change of Zone Application
Non Urban Planned Unit Development
(specific guide)
Prepared for:
MBM Enterprises, LLC
c/o Anthony Brigham
JR McEntee
6425 Clearwater Drive
Loveland, CO 80538
Prepared by:
Todd Hodges Design, LLC
1269 North Cleveland Avenue
Loveland, Colorado 80537
Submitted: EXHIBIT
July 20, 2005 1 2
1269 North Cleveland Avenue • Loveland. Colorado 80537 • (970) 613-8356 • fax: (970)613-8773
email: (oak odgesdesup1 a earthlink.net
2005-3344
. Todd Hodges Design, LLC
Sierra Acres PUD Change of Zone
Specific Guide
Table of Contents
1. Application Form
2. Authorization Forms
3. Specific Development Guide
4. Response to Sketch Plan Staff and Referral Agency Comments
a. Weld County Building Official
b. Weld County Zoning Compliance Officer
c. West Greeley Soil Conservation District
d. Colorado Geological Survey
e. Colorado Division of Wildlife
f. Colorado Division of Water Resources
g. Colorado Department of Transportation
h. Widening Detail for Street Turns for Weld County Public Works
i. New Cache LaPoudre Irrigation Company
j. Petro-Canada Resources letter dated July 7, 2005
5. Weld County Road Access Information Form
6. Reduced Plat
7. Deed
8. FEMA Map
9. Soils Map and Corresponding Narratives
10. Evidence of Adequate Water Supply and County Approval
11. Surrounding Property Owner List
12. Mineral Affidavit
13. Weld County Statement of Taxes
14. Engineering Documents, Attached
15. Change of Zone Plat and Vicinity Maps, Attached
16. Check for $2,100.00 Application Fee
1269 .Vorth Cleveland Avenue • Loveland. Colorado 81/537 • (97(I) 613-8556 • Jae: (9711)6/3-877;
einnil: toddhodgesdesi,iwa earth lin II.net
PLANNED UNIT DEVELOPMENT (PUD) CHANGE OF ZONE APPLICATION
FOR PLANNING DEPARTMENT USE DATE RECEIVED:
RECEIPT#/AMOUNT# /$ CASE#ASSIGNED:
APPLICATION RECEIVED BY PLANNER ASSIGNED:
Parcel Number 0805 19 100002
(12 digit number-found on Tax I.D.information,obtainable at the Weld County Assessor's Office,or www.co.weld.co.us).
(Include all lots being included in the application area, If additional space is required,attach an additional sheet)
Legal Description Lot B, AmRE-3006 located in Pt. NE4 , Section 19 , Township 06 North, Range 66 West
Property Address (If Applicable) 32723 WCR 27 Greeley, CO 80634
Existing Zone District : AG Proposed Zone District:_PUD Total Acreage: 69.36 Proposed #/Lots 9
Average Lot Size: 2.61 acres Minimum Lot Size: 2 acres Proposed Subdivision Name: Sierra Acres
Proposed Area (Acres) Open Space: 0.16 acres Is this application to be reviewed as a Cluster PUD?Yes No
X
Are you applying for Conceptual or Specific Guide? Conceptual Specific X
FEE OWNER(S) OF THE PROPERTY(If additional space is required,attach an additional sheet)
Name: MBM Enterprises, LLC do Anthony Brigham and JR McEntee
Work Phone#(970) 669-0717 Home Phone# N/A Email Address NA
Address: 6425 Clearwater Drive
City/State/Zip Code Loveland, CO 80538
APPLICANT OR AUTHORIZED AGENT (See Below:Authorization must accompany applications signed by Authorized Agent)
Name: Todd Hodges Design, LLC
Work Phone#: (970)613-8556 Home Telephone#: N/A Email Address: toddhodgesdesign(a)qwest.net
Address: 1269 North Cleveland Avenue
City/State/Zip: Loveland, CO 80537
UTILITIES: Water: North Weld County Water District
Sewer: Proposed Septic
Gas: LP
Electric:Poudre Valley REA
Phone: Qwest
DISTRICTS: School: RE-4, Windsor School District
Fire: Windsor/Severance View Fire Protection District
Post: Greeley 80631
I (We)hereby depose and state under penalties of perjury that all statements, proposals,and/or plans submitted with or contained within the
application are true and correct to the best of my(our)knowledge. Signatures of all fee owners of property must sign this application. If an
Authorized Agent signs,a letter of authorization from all fee owners must be included with the application.If a corporation is the fee owner,notarized
evidence must be included indicating the signatory has the legal authority to sign for the corporation. I (We)the undersigned, hereby request
hearings before the Weld County Planning Commission and the Board of County Commissioners concerning the proposed Change of Zone for the
above described unincorporated area of Weld County,Colorado:
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Sig lure: Own r or Aut on d Agent Date Si. ature: .wn:r or Aufhori. . Ag q t Date
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Agent Date Signatu Owner „r Authorized Agent •ate
MBM Enterprises, LLC
Anthony R. Brigham
Katina Martin-Brigham
John R. McEntee
Tonya Brigham-McEntee
6425 Clearwater Drive
Loveland, CO 80538
To Whom It May Concern:
Please be advised that We, Anthony R. Brigham, Katina Martin-Brigham, John R.
McEntee and Tonya Brigham-McEntee, hereby authorize Todd Hodges Design, LLC, to
represent us in our endeavor to subdivide our property located in part of the NE4 Section
19, Township 6 North, Range 66 West of 6th P.M., Weld County, Colorado. The parcel
is known as Lot B, RE-3006.
Anthony R. Brigham - date
Katina Martin-Brigham date
/L ( � � 07,—
Jo McEntee date
c
Tonya Brigham-Mc ntee date
OFFICE OF THE SECRETARY OF STATE
OF THE STATE OF COLORADO
CERTIFICATE
I, Donetta Davidson, as the Secretary of State of the State of Colorado, hereby certify that,
according to the records of this office,
MBM ENTERPRISES,LLC
is a
Limited Liability Company
formed or registered on 07/07/2003 under the law of Colorado, has complied with all applicable
requirements of this office, and is in good standing with this office. This entity has been
assigned entity identification number 20031217563
This certificate reflects facts established or disclosed by documents delivered to this office on
paper through 02/28/2005 that have been posted, and by documents delivered to this office
electronically through 03/07/2005 @ 14:16:20 .
I have affixed hereto the Great Seal of the State of Colorado and duly generated, executed,
authenticated, issued, delivered and communicated this official certificate at Denver, Colorado
on 03/07/2005 @ 14:16:20 pursuant to and in accordance with applicable law. This certificate is
assigned Confirmation Number 6165948 .
•
14 4
1J4(/ _/.{Pa >c2
Secretary of State of the State of Colorado
End of Certificate+}}}}«}+}}+}+}}«}+}+}r}}}+}}}}}}+}}:}+++
Notice:A certi cafe issued electronicall om the Colorado Secret o State's Web site is Ii and immediate! valid and e ective. However,
as an option,the issuance and validity of a certificate obtained electronically may be established by visiting the Certificate Confirmation Page of
the Secretary of State's Web site, httu:bwwwsos.state co us/biz/CertilicateSearchCriteria.do entering the certificate's confirmation number
displayed on the certificate, and following the instructions displayed. Confirming the issua /'
is not
necessa t tie valid a d ell 'su f c t"fi al 1 t nal nd For more information,visa our Web site, hltp./4vwwsnsstate.co.uc/click Business
Center and select"Frequently Asked Questions."
ARTICLES OF ORGANIZATION OF
MBM ENTERPRISES,TLC
of MBMThe
undersigned natural person of the age of eighteen years or more,acting as
Enterpises,LLC,organized and created under the organizer
er
Liability Company Act,hereby adopts the following Articles of Organization rga z o Colorado aid Limited
Liability Company:
for said Limited
FIRST: The name of the Limited Liability Company anti be MBM Enterprises,
LLC (the "Company"). The initial principal place of business is: 2707 Granada Dr.,Loveland,
Colorado 80538.
SECOND: The period of its duration shall be ten years from the date of filing these
Articles of Organization with the Colorado Secretary of State.
THIRD: The address of the initial registered agent of the Company within the State
of Colorado is 2707 Granada Dr.,Loveland,Colorado 80538, The name of the Company's initial
registered agent at such address is John It.McEntee.
FOURTH: Management of the Company shall be vested in one or more Managers,to
be selected as provided by the Operating Agreement of the Company. The name and business
address of the initial managers who shall serve as managers until the first annual meeting of
members or until their successors are elected and shall qualify are:John R.McEntee,2707 Granada
Dr.,Loveland, Colorado 80538;and Anthony R Brigham,2228 Parallel!Drive,Loveland, Colorado
80538..
FIFTH: r,: ,°..e and address of the organizer is:Tonya Brigham-McEntee,2707
Granada Dr.,Loveland Colom o 80538.
Sign It hrTh9-
_Lc afor
TONYA B G -MCENTEE Date
ACCEPTANCE BY REGISTERED AGENT
The undersigned JOHN R. MCENTEE hereby consents to appointment as the initial
registered agent of the Limited Liability Compaannnyy.�./n �� � �
DATE: 7/2/03 C l9n rmwerIeo esow
1 J R.MCENTEE apc�'�avaUsr.,
20031217563 M
$ 50.00
07-07-A20030F16:14E
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MBM Enterprises LLC
Sierra Acres PUD
Specific Development Guide
Introduction
The Sierra Acres Planned Unit Development (PUD) proposes nine single-family residential units
ranging in size from 2 to 5.4 acres. The property is located west of and adjacent to Weld County Road
27 and south of and adjacent to State Highway 392. This Development Guide is submitted with this
application through the Specific Development Guide option.
The intent of the entire PUD application process is to Change the Zone of, and Plat the property for uses
compatible with surrounding land uses, permitting 9 single family Estate lots and four Outlots. Outlot 2
(0.1 acre) and Outlot 4 (0.06 acre) shall have the ability to be used for the mail kiosk and will be
common open space. The applicant has met with the United States Postal Service to discuss mail
delivery to this development. Outlot 2 is where the proposed school bus shelter location shall be.
Correspondence with the School District is included. Outlot 1 (17.7 acres) and Outlot 3 (23.9 acres) are
to be zoned Agricultural. The intended use of these agricultural Outlots is to retain the ability to transfer
the property as well as the ability to construct agricultural buildings on each Outlot.
The development of the site will be compatible with the architectural style of the surrounding land-uses
and with the overall character of the area. This development proposes the ability of each lot to have
Auxiliary Quarters as defined by Weld County Code Section 23-1-90. This definition shall be adhered
to with the exception of the 2.5 acre lot size. Proposed land uses within this property include those
allowed by right in both the Estate and Agricultural Zone Districts.
The following Development Guide has been prepared in accordance with Article VI of Chapter 27,
Weld County Code.
1
Section 27-4-201.14. Initial impact plan addressing all impacts this use will have on the proposed
site and surrounding land uses. A listing of potential impacts is cited in Section 27-6-30 of this
Chapter. (SPECIFIC DEVELOPMENT GUIDE)
Section 27-6-40. Component One—environmental impacts
1. Noise and vibration
2. Smoke, dust and odors
3. Heat, light and glare
4. Visual/aesthetic impacts
5. Electrical interference
6 Water pollution
Development of this proposal should not result in any negative environmental impacts, including the
above listed environmental concerns. The end use of the site will be residential.
7. Wastewater disposal
All wastewater disposal on the site will be through the use of Individual Septic Disposal Systems.
8. Wetland removal
To the applicant's knowledge, this proposal does not remove wetlands.
9. Erosion and sedimentation
10. Excavating,filling and grading
11. Drilling, ditching and dredging
Any on-site grading, drilling, ditching or dredging will be done sympathetically. The applicant has had
numerous conversations with the oiUgas operators on this site. The standard "no-build" circles have be
delineated on the Change of Zone Plat. Erosion will be kept to a minimum. A Drainage Report dated
March 4, 2005 prepared by Wohnrade Civil Engineers, Inc.was included with Sketch Plan application
materials.
12. Air pollution
13. Solid waste
14. Wildlife removal
15. Natural vegetation removal
This proposal will not result in negative impacts to the above listed concerns.
16. Radiation/radioactive material
To the applicant's knowledge, there are no radioactive materials located on this site.
17. Drinking water source
The drinking water source is through North Weld County Water District. A letter dated November 29,
2004 from the North Weld County Water District is included herein. Approval by Lee Morrison,
Assistant County Attorney is included herein.
18. Traffic impacts
The internal roadway in the PUD is designed to meet the requirements of Chapters 24 and 26 of the
Weld County Code. The vehicular circulation system is proposed to be paved. The width, depth of the
roadway and the radius of the cul-de-sac will be designed to meet the Weld County Public Works
standards and regulations. The internal roadway is proposed to be dedicated to the public and a roadway
cross section will be included in future applications. The primary access to the subdivision is from Weld
2
County Road 27. No loading zones are proposed as the use will be residential. Additionally, no off-
street parking areas have been depicted as the ample lot size will adequately accommodate residential
parking needs. The applicant has met with the Windsor Fire Protection District and has included a
proposed emergency access onto WCR 27 at the northeast corner of the property. This proposed access
is located as far south as possible from SH 392. This proposed access would replace the existing access
that is closer to SH 392 and would allow for emergency access and continued agricultural access to
Outlot I.
All remaining existing access points illustrated on the Weld County Road Access Information Form as
well as the attached Plat are crucial for the continuance of agricultural and oil and gas activities on site.
These access points are historical and based upon the existing uses of the property. Each building
permit issued on the property shall conform to the Weld County Road Impact Fee Program.
Section 27-6-50 Component Two—service provision impacts
1. Schools
2. Law enforcement
3. Fire protection
4. Ambulance
Service providers for this Planned Unit Development include the Windsor School District, Weld County
law enforcement, and the Windsor/Severance Fire Protection District. A bus shelter and collection point
has been designated south of the subdivision entrance. The property owners have also been in contact
with the Windsor/Severance Fire Protection District and the United States Postal Service to discuss the
development and incorporate discussion points into this application.
S. Transportation (including circulation and roadways)
6. Traffic impact analysis by registered professional engineer
Agricultural access, ditch access and oil and gas accesses shall remain as noted on the plat. These
access points are consistent with the needs associated with such uses as evident by the attached letters.
7. Storm drainage
Storm drainage will be handled on-site. A Drainage Report dated March 4, 2005 prepared by Wohnrade
Civil Engineers, Inc. was included in Sketch Plan application materials.
R Utility provisions
9. Water provisions
10. Sewage disposal provisions
The drinking water source is proposed through North Weld County Water District. Approval by the
Weld County Attorney's Office is included herein. All wastewater disposal will be handled through an
Individual Sewage Disposal System.
Section 27-6-60 Component Three—landscaping elements
1. Landscape plan
2. Treatment, buffering or screening and perimeter treatment
3. Maintenance schedule for landscaping elements
4. On-site improvements agreement
5. Evidence of adequate water
Any landscaping improvements will be focused on the entry treatment and illustrated at time of Final
Plan.
3
Section 27-6-70 Component Four—site design
I. Unique site features
There are no site features unique to this particular property.
2. PUD rezoning consistent with Chapter 22 of Weld County Code
Section 22-2-190.D.2.a PUD.Policy 4.1 states, "The design of a planned unit development should ensure
compatibility and harmony with existing and planned uses on adjacent properties and within the planned
unit development." The applicant has carefully considered the uses on-site, adjacent properties and the
existing use of the property. The result is consistent with the existing and planned uses on adjacent
properties. The applicant contacted surrounding property owners to discuss this application. Contact
was made November 30, 2004. Received response was positive. Evidence of support was included with
the Sketch Plan application.
A. Goal 1 indicates, "Conserve agricultural land for agricultural purposes which foster the economic
health and continuance of agriculture." Through this PUD Process, both Outlots 1 and 3 will be able to
be continue in agricultural uses, be transferred separately and have agricultural accessory structures
constructed upon them.
Goal 3 "Discourage urban-scale residential, commercial and industrial development, which is not
located adjacent to existing incorporated municipalities." Chapter 23 of the Weld County Code defined
urban scale development as developments exceeding nine (9) lots and/or located in close proximity to
existing PUDs, subdivisions, municipal boundaries or urban growth corridors and boundaries. This
application proposes nine PUD estate lots and two agricultural out-lots. The application is not located
adjacent to a municipality or other PUD's, subdivisions, municipal boundaries or an urban growth
corridor or boundary. The property is located within the standard 3-mile referral area for Greeley,
Windsor and Severance. Referrals from each community from the Sketch Plan phase indicated no
conflict with the proposal.
3. Compatibility within PUD zone district
4. Compatibility with surrounding land uses
The existing design of the subdivision takes into consideration the existing uses of the surrounding
properties and the existing irrigation practices of the area. All recorded plats will include the Weld
County Right to Farm, found in Appendix 22-E of the County Code. The applicant proposes to adhere
to the Estate Zone District on Lots 1 — 9 and the Agricultural District for Outlots 1 - 4. The bulk
requirements listed in the Weld County Code for both Districts will be adhered to. Lots 1- 9 will have
the opportunity for Auxiliary Quarters as defined in Section 23-1-90 of the Weld County Code.
A letter of support from Podtburg Dairy and a surrounding property owner was included with Sketch
Plan application materials and has been included with this application.
The project engineer has been in contact with the Irrigation and Ditch Companies.
S. Overlay districts
Upon review of the Weld County flood hazard, geological hazard and airport influence maps, as well as
the I-25 Mixed Use Development Area Map and Chapter 19 of the Weld County Code, this proposal is
not located within these overlay districts.
4
Secdon 27-6-80 Component Five—common open space usage
The common open space areas within this subdivision are designed and proposed to be consistent with
the requirements of Section 27-6-80 of the Weld County Code.
1. Permanent common open space restrictions
2. Establishment of homeowners organization
3. Mandatory membership in homeowners organization
4. Homeowners organization responsibilities
5. Homeowners organization powers
6. Ownership and maintenance of common open space
7. 15% common open space allocation
Common Open Space is not a requirement for this particular proposal per Weld County Section 27-2-
140. This proposal is allocating four Outlots. Outlots 2 and 4 have the intent of a mail kiosk and school
bus shelter as common open space to be transferred to the homeowners association. Outlots 1 and 3 are
intended for continued agricultural practices. The four outlots total 41.76 acres or approximately 61%
of the entire site. Outlots 2 and 4 are to be used by the residents of the subdivision. Outlots 1 and 3 are
not to be used as common open space. Rather, these outlots are to be zoned PUD Agricultural and
intended for agricultural uses, not open space common to the residents.
Future uses on site will be required to establish a Homeowners Association to govern the method of
open space restrictions, as well as the maintenance and ownership of the common elements, including
Outlots 2 and 4. Agricultural accessory buildings may be constructed on Outlots 1 and 3.
Section 27-6-90 Component Six—signage
All signage within this PUD will comply with the sign standards set forth in the Weld County Code.
Future signs require a Building Permit. The Final Plat application will designate a location and design.
Section 27-6-100 Component Seven—MUD impact
This proposal is not located within the Mixed Use Development Boundary as delineated by Weld
County.
Section 27-6-110 Component Eight—intergovernmental agreement impacts
This proposal is not located within an Intergovernmental Agreement Urban Growth Boundary area.
This proposal is located within three miles of the communities of Severance, Windsor and Greeley.
5
Sierra Acres
Change of Zone Application
Response to Sketch Plan Staff Comments and Referral Agency Responses
Weld County Building Official
Staff Sketch Plan comments noted that the Weld County Building Official noted comments to be
Addressed prior to proceeding with the Change of Zone application. The Weld County Building
Official had six comments relative to the construction phase of development are were not applicable to
the Change of Zone or Final Plat stages of development review. These six comments will be noted and
kept for reference for the time when on-site construction commences.
Weld County Zoning Compliance Officer
Staff Sketch Plan comments noted that the Weld County Zoning Compliance officer had comments to
be addressed prior to proceeding with the Change of Zone application. The Weld County Zoning
Compliance officer's comments dated March 15, 2005 indicated, "We have reviewed the request and
find no conflicts with our interests." Therefore, no comment is required.
West Greeley Soil Conservation District
West Greeley Soil Conservation District, in their referral dated March 15, 2005, recommends an on-site
soils test prior to any construction. This shall be taken under advisement.
Colorado Geological Survey
In their referral response dated May 6, 20905, the Colorado Geological Survey noted the following
items:
1. The "site's low-strength, possibly expansive or collapsible, and in some areas, very slow percolating
soils." Each building site warrants individual investigation. This shall be taken under advisement
with the project Engineer.
2. Individual foundation perimeter drains should be constructed per TerraLogics report dated July 26,
2004. This shall be taken under advisement with the project Engineer.
3. Oil and Gas activities on site and development. No-build areas around oil and gas facilities have
been designated per State Statute, the Weld County Code, and discussions with the owners/operators
as illustrated on attached maps.
Colorado Division of Wildlife
In their referral dated March 19, 2005, the Colorado Division of checked the box, "We have reviewed
the request and find no conflicts with our interests." Therefore, no comment is required.
Colorado Division of Water Resources
The State Division of Water Resources, in their referral response dated March 28, 2005, indicated a
letter from North Weld County Water indicating commitment to service the property will be necessary
with future applications. Application materials for the Change of Zone application indicate commitment
to serve the property. County approval is included in application materials.
Colorado Department of Transportation
The Colorado Department of Transportation in their referral dated March 17, 2005 noted the projected
right-of-way requirement is 100 feet on either side of the highway. Ms. Hice-Idler also noted concern
with the Weld County Road 27 and State Highway 392 intersection. The project Engineer and Ms.
Hice-Idler have been working together to resolve any concerns. Future resolve will be sent to the Weld
County Departments of Planning Services and Public Works.
The New Cache La Poudre Irrigating Company
The New Cache La Poudre Irrigating Company noted two items in their April 11, 2005 referral response
requiring attention.
1. The first is in regard to the 150' canal easement. According to Dale Trowbridge with The New
Cache La Poudre Irrigating Company, a 150' Irrigation and Trail Easement is required if the site has
been annexed to the Town of Windsor. If the site is in Weld County, the 150' easement will be an
irrigation easement only. This information was provided to the project engineer by Dale
Trowbridge.
2. The second is in regard to the storm water easement over the canal. Mr. Trowbridge stated that an
easement would not be required for the existing pipe crossing over the canal that the project intends
to use to convey storm water.
In reference to the Town of Windsor's response, "The applicant shall delineate the `Greeley No. 2
Ditch' easement as also being a `public trail easement.' The project engineer spoke with Dale
Trowbridge with The New Cache La Poudre Irrigating Company. Mr. Trowbridge stated that the ditch
company does not want a trail easement unless the site has been annexed to the Town of Windsor. The
name of the irrigation company is The New Cache La Poudre Irrigating Company. The ditch is called
the Greeley No. 2 Canal.
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WIDENING DETAIL FOR STREET TURNS>60° (LOCAL STREETS ONLY)
LARIMER COUNTY DESIGN REVISION NO: 1 FIGURE
URBAN AREA FIGURE
STREET STANDARDS DATE: 03/01/02 7-24
bcaxnoA, Petro-Canada Resources (USA) Inc.
July 7, 2005
MBM Enterprises
J.R. McEntee
2707 Granada Drive
Loveland, CO 80538
RE: Sierra Estates Subdivision
Dear J.R.:
Pursuant to our telephone conversation yesterday, this letter is to advise that
Petro-Canada Resources (USA) Inc. has reviewed your plat of the proposed Sierra
Estates Subdivision, and as currently planned has little or no impact on our oil and gas
operations. You have clearly allowed for the 400' drilling windows on your plat of your
subdivision.
We reserve the right to be notified and involved in the PUD process as you
progress forward. Please keep us informed of all hearings and meetings, as you progress
forward.
If you require anything further from us, please do not hesitate to call me at 303-
350-1179. It has been a pleasure working with you.
Sincerely,
Cindi Danner-Weide, CPL
Senior Landman
Suite 400, 1099 18th Street • Denver,CO 80202-1904
Office:(303)297-2300 • Fax(303)297-7708 • www.petro-canada.ca
r
Report Date: 07/14/2005 11:57AM WELD COUNTY TREASURER Page: 1
STATEMENT OF TAXES DUE
SCHEDULE NO: R0910201
,r ASSESSED TO:
MCENTEE JOHN R&
6425 CLEARWATER DR
LOVELAND, CO 80538-7039
LEGAL DESCRIPTION:
PT 19-6-66 LOT B REC EXEMPT RE-3006 (.96R2.67D) 32791 27 CR WELD 000000000
PARCEL: 080519000057 SITUS ADD: 32791 27 CR WELD
TAX YEAR CHARGE TAX AMOUNT INTEREST FEES PAID TOTAL DUE
2004 TAX 862.88 0.00 0.00 862.88 0.00
TOTAL TAXES 0.00
GRAND TOTAL DUE GOOD THROUGH 07/14/2005 0.00
ORIGINAL TAX BILLING FOR 2004 TAX DISTRICT 0430-
Authority Mill Levy Amount Values Actual Assessed
WELD COUNTY 19.957 192.58 AGRICULTUR 23,864 6,920
SCHOOL DIST RE4 52.964 511.09 AGRICULTUR 9,426 2,730
NCW WATER 1.000 9.65
NWC WATER 0.000 0.00 TOTAL 33,290 9,650
WINDSOR SEVER FIRE 5.209 50.27
AIMS JUNIOR COL 6.328 61.07
WINDSOR LIBRARY 3.546 34.22
WEST GREELEY CONSERVATION 0.414 4.00
TAXES FOR 2004 89.418 862.88
ALL TAX LIEN SALE AMOUNTS ARE SUBJECT TO CHANGE DUE TO ENDORSEMENT OF CURRENT TAXES BY THE LIENHOLDER
OR TO ADVERTISING AND DISTRAINT WARRANT FEES. CHANGES MAY OCCUR AND THE TREASURER'S OFFICE WILL NEED TO BE
CONTACTED PRIOR TO REMITTANCE AFTER THE FOLLOWING DATES: PERSONAL PROPERTY AND MOBILE HOMES-AUGUST 1,
^REAL PROPERTY-AUGUST 1. TAX LIEN SALE REDEMPTION AMOUNTS MUST BE PAID BY CASH OR CASHIERS CHECK.
P.O. Box 458
Greeley, CO 80632
(970)353-3845 ext. 3290
WELD COUNTY TREASURER
Pursuant to the Weld County Subdivision Ordinance, the attached Statement(s)
of Taxes Due, issued by the Weld County Treasurer, are evidence that, as of this date,
all property taxes, special assessments and prior tax liens currently due and payable
r connected with the parcel(s) identified therein have been paid in full.
Signed Date 7— / q--os
Page 1 of 2
Anne Johnson of Todd Hodges Design, LLC
From: "Mary Wohnrade" <mary@wcecivil.com>
To: 'Todd Hodges" <toddhodges@gwest.net>
Cc: "Anne Johnson @ Todd Hodges Design, LLC" <annejohnson@gwest.net>
Sent: Tuesday, July 26, 2005 8:27 AM
Attach: image002.jpg
Subject: FW: Sierra Acres P.U.D. -Weld County Case No. PK-1089
Todd:
See original message from Gloria Hice.
Mary B. Wohnrade, P.E.
WOHNRADE CIVIL ENGINEERS, INC.
Mailing Address:
337 W. Main Street
Barrington, Illinois 60010
Phone: 847-381-2745
Fax: 847-381-2746
Colorado Office:
1269 N. Cleveland Avenue
Loveland, Colorado 80537
Toll Free: 888-381-2745
Email: mary@wcecivil.com
Original Message
From: Hice-Idler, Gloria [mailto:Gloria.Hice-Idler@DOT.STATE.CO.US]
Sent: Monday, July 25, 2005 12:48 PM
To: Kim Ogle; mary@wcecivil.com
Subject: FW: Sierra Acres P.U.D. - Weld County Case No. PK-1089
Based upon the information provided, CDOT is satisfied that this proposal will have no significant impact on our
system. We have no comment.
If you have any questions, please do not hesitate to contact me.
Gloria Hice-Idler
Access Manager
(970) 350-2148
(970) 350-2198 fax
From: Mary Wohnrade [mailto:mary@wcecivil.com]
Sent: Friday, July 15, 2005 10:56 AM
7/26/2005
Page 2 of 2
To: Hice-Idler, Gloria
Cc: Todd Hodges; Anthony Brigham; JR McEntee
Subject: Sierra Acres P.U.D. -Weld County Case No. PK-1089
Gloria:
This email is a follow-up to our telephone conversation this morning regarding the above referenced project. In
your Weld County Referral dated March 14, 2005, you had made the comment, "CDOT's concern would be with
CR 27 and SH 392 intersection:
As we discussed earlier, after having made several visits to the project site, and witnessing the volume of traffic
on a periodic basis, it is our opinion that the proposed 9 lot P.U.D.will not adversely affect the capacity of the
aforementioned intersection. If this meets with your understanding of our conversation please reply to this email
at your earliest convenience. It was a pleasure speaking with you and on behalf of the owners we thank you for
your assistance on this project.
Mary B. Wohnrade, P.E.
WOHNRADE CIVIL ENGINEERS, INC.
Mailing Address:
337 W. Main Street
Barrington, Illinois 60010
Phone: 847-381-2745
Fax: 847-381-2746
Colorado Office:
1269 N. Cleveland Avenue
Loveland, Colorado 80537
Toll Free: 888-381-2745
Email: mary@wcecivil.com
7/26/2005
Drainage Design Considerations
for
Sierra Acres P.U.D.
Change of Zone Application
Weld County, Colorado
July 20, 2005
Prepared for:
Anthony Brigham and JR McEntee/ MBM Enterprises, LLC.
6425 Clearwater Dr.
Loveland, Colorado 80538
Prepared by:
Wohnrade Civil Engineers, Inc.
337 W. Main Street
Barrington, IL 60010
Phone: (847)-381-2745, Fax: (847)-381-2746
Project Number:0413.00-MBM
Wohnrade Civil Engineers, Inc.
337 W.Main Street Barrington, IL 60010 Phone:847-381-2745,Fax:847-381-2746
July 20, 2005
Weld County
Department of Planning Services
1555 N. 17th Avenue
Greeley, Colorado 80631
_ Re: Drainage Design Considerations for
Sierra Acres P.U.D.
Change of Zone Application
Weld County, Colorado
Dear Staff:
Wohnrade Civil Engineers, Inc. is pleased to submit this drainage study for Sierra Acres
P.U.D. for your review. This report complies with the storm drainage design and
technical criteria defined in Sections 24-7-130 and 27-6-50, paragraph B, Item 7 of the
Weld County Code.
We acknowledge that review of this study by Weld County is for general conformance
with submittal requirements, current design criteria and standard engineering principles
and practices.
If you should have any questions or comments as you review this report, please feel
free to contact me at your convenience.
Sincerely,
WOHNRADE CIVIL ENGINEERS, INC.
Melissa Chalona, P.E.
R-ros, 30325 fil
M P.E.
��'��.,t,l�►�'"
TABLE OF CONTENTS
VICINITY MAP
Page No.
I INTRODUCTION
1.1 Objective 1
1.2 Project History and Previous Studies 1
1.3 Mapping and Surveying 1
II SITE LOCATION AND DESCRIPTION
2.1 Site Location 1
2.2 Site Description 1
III HISTORIC CONDITIONS
3.1 Historic Drainage Patterns 2
3.2 Historic Drainage Basins 2
IV DEVELOPED CONDITIONS
4.1 Proposed Site Development 3
4.2 Developed Drainage Basins 3
4.3 Developed Drainage Patterns 3
4.4 Detention Pond 1 4
V DESIGN CRITERIA
5.1 Design References 4
5.2 Hydrologic Criteria 4
VI EROSION CONTROL
6.1 Erosion Control Plan 5
VII CONCLUSIONS
7.1 Compliance with Standards 5
7.2 Variances 5
REFERENCES 6
r
_ EXHIBITS
Exhibit 1 FIRM Map
_ Exhibit 2 Off-site Basin Map
Exhibit 3 Typical Street Section
APPENDICES
Appendix A: Historic Condition Hydrology
Appendix B: Developed Condition Hydrology
PLANS
Sheet 1/2 Historic Condition Plan
Sheet 2/2 Developed Condition Plan
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Drainage Design Considerations
for
Sierra Acres P.U.D.
Change of Zone Application
Weld County, Colorado
July 20, 2005
1. INTRODUCTION
1.1 Objective
This study documents the results of a comprehensive hydrologic and hydraulic
analysis of both pre and post-development conditions for the proposed Sierra
Acres P.U.D.. The proposed development is within an Agricultural Zone District
in Weld County and will be processed through the County as a Planned Unit
Development (P.U.D.).
1.2 Project History and Previous Studies
This study has been preceded by one previous report which is entitled, Drainage
Design Considerations for Sierra Acres P.U.D., Sketch Plan Application, dated
March 4, 2005, by Wohnrade Civil Engineers, Inc.
1.3 Mapping and Surveying
Topographic mapping with a contour interval of 10-foot was obtained by
Wohnrade Civil Engineers, Inc. from Intermill Land Surveying, Inc., Loveland,
Colorado. Additional topography outside of the project boundary was taken from
USGS topographic mapping with a ten (10) foot contour interval.
II SITE LOCATION AND DESCRIPTION
2.1 Site Location
The site is located in the northeast quarter of Section 19, Township 6 North,
Range 66 West of the 6th Principal Meridian, Weld County, Colorado. The site
is bounded by Colorado State Highway 392 on the north and Weld County Road
27 on the east (See Vicinity Map.)
2.2 Site Description
The Sierra Acres P.U.D. site is approximately 69.36 acres and is currently in an
Agricultural Zone District. The site is currently being used for agricultural
purposes, and contains an existing irrigation ditch running from northwest to
southeast near the upper third of the site. In addition, the Greeley No. 2 Canal
bisects the southern third of the site. Access roads are located along the
Greeley No. 2 Canal on the north and south sides.
There are two existing residences located adjacent to the site on the east, near
Weld County Road 27. The property located west of the site is agricultural in
use, and to the south of the site there is an existing dairy farm.
.— There is an existing oil well located near the center of the site, with an associated
access road, and storage tank.
The site is bounded by Colorado State Highway 392 on the north, with a paved
Drainage Design Considerations Wohnrade Civil Engineers, Inc.
Sierra Acres P.U.D. Change of Zone Application
July 20, 2005 u1
Page 2
surface, and County Road 27 on the east, which is a local road with a paved
surface.
Three exploratory borings were placed throughout the proposed site. Free
groundwater was encountered in Test Hole 2 at a depth of approximately
nineteen (19) feet. Soil encountered in the upper 4 '/2 feet to 8 'A feet of the test
holes consisted of sand to very sandy clay with silt (See Reference 2).
The Flood Insurance Rate Maps (FIRM's) from the National Flood Insurance
Program have been referenced to determine if the site is located within a
regulatory floodplain. The area is located in Flood Map 080266 0606, a not-
- printed area in Zone C (See Exhibit 1.)
III. HISTORIC CONDITIONS
3.1 Historic Drainage Patterns
Roughly one-third of the site (36.8 acres) drains overland from north to south at
slopes ranging from 1.71% to 7.81% toward the Greeley No. 2 Canal. The
portion of the site located south of the canal (20.3 acres) drains to the southwest
corner of the property. There is no discernable historic flow path from this point,
and stormwater runoff would be retained on-site.
_ Stormwater runoff from the northern portion of the site (23.3 acres) drains to the
northeast to the intersection of Colorado State Highway 392 and County Road
27. Stormwater runoff is then conveyed to the east through an existing
corrugated metal culvert under WCR 27.
A small portion of the site (0.2 acres) drains overland from east to west offsite to
the adjacent property to the west.
There is no stormwater runoff entering the site from offsite basins (See Exhibit
2).
3.2 Historic Drainage Basins
The site is has been divided into four historic drainage basins as shown on the
Historic Drainage Plan (Drawing 1 of 2).
_ Basin H1 (20.3 acres) drains overland from north to south/southwest to the
southwest corner of the property. The 5 and 100-year peak discharges from
Basin H1 are 0.4 cfs and 15.6 cfs respectively. This basin will remain
undisturbed except for the construction of a retention pond in the northwest
corner of the basin.
Basin H2 (36.8 acres) drains south into the Greeley No. 2 Canal. The 5 and
100-year peak discharges from Basin H2 are 1.5 and 30.4 cfs respectively. The
majority of development will occur in this basin.
Drainage Design Considerations Wohnrade Civil Engineers, Inc.
Sierra Acres P.U.D.-Change of Zone Application
July 20, 2005
Page 3
Basin H3 (23.3 acres) drains overland from southwest to northeast towards the
intersection of Highway 392 and County Road 27. The 5 and 100-year peak
discharges from Basin 113 are 1.5 cfs and 16.7 cfs respectively. Development will
not take place within this basin.
Basin H4 (0.2 acres) drains overland generally from east to west towards the
property to the west. The 5 and 100-year peak discharges from Basin H4 are
0.0 cfs and 0.4 cfs respectively. This basin will remain undisturbed.
VI. DEVELOPED CONDITIONS
4.1 Proposed Site Development
The planned unit development proposes nine single-family estate lots, and four
outlots. Outlot 1 (17.9 acres) and Outlot 3 (23.9 acres) will remain as an
agricultural use.
Site improvements will include a cul-de-sac road, with roadside ditches, a
potable water distribution system, and individual sewage disposal systems.
1 4.2 Developed Drainage Basins
The developed site has been divided into seven (7) on-site drainage basins.
Runoff from roughly 32.8 acres of the Sierra Acres P.U.D. site will be routed to
an on-site retention pond (Pond 1) located in the southwest portion of the site,
adjacent to the Greeley Canal No. 2 (See Developed Drainage Plan, Sheet 2 of
2.) The developed runoff from Basins 6 and 7 will cross the Greeley No. 2 canal
via an existing 18" diameter overchute that crosses the canal near the western
property boundary. Developed runoff will be retained in Pond 1, and is intended
to be used for onsite irrigation.
4.3 Developed Drainage Patterns
The overall drainage pattern of the site will remain generally unchanged from pre
to post-development conditions. The majority of the stormwater runoff that
historically drained to the Greeley No. 2 Canal will now be collected and
conveyed to the on-site retention pond.
Basin 1 (14.0 acres) will remain unchanged from historic conditions, and will
continue to drain overland to the south and southwest boundaries of the site.
The peak 5- and 100-year discharges at Design Point 1 are 0.3 and 10.0 cfs
respectively.
Basin 2 (10.3 acres) will remain unchanged from historic conditions, and will
continue to drain overland to the south towards the Greeley Canal No. 2. The
peak 5- and 100-year discharges at Design Point 2 are 1.5 and 11.4 cfs
respectively. Stormwater runoff from this basin will not be retained.
Drainage Design Considerations Wohnrade Civil Engineers, Inc.
Sierra Acres P.U.D.-Change of Zone Application
July 20, 2005
•
Page 4
Basin 3 (23.3 acres) will remain unchanged from historic conditions, and will
continue to drain overland, and in roadside ditches to the intersection of
Colorado State Highway 392 and Weld County Road 27. The peak 5- and 100-
year discharges at Design Point 3 are 1.5 and 16.7 cfs respectively.
Basin 4 (0.2 acres) will continue to drain overland towards the west. The peak 5-
and 100-year discharges at Design Point 4 are 0.0 and 0.4 cfs respectively.
Basin 5 (6.3 acres) includes the area tributary to Pond 1 which is located south
of the Greeley Canal No 2. Peak 5- and 100- discharges at Design Point 5 are
0.3 and 11.6 cfs respectively.
Basin 6 (13.5 acres) will drain overland, and in roadside ditches and swales to
Retention Pond 1 located adjacent to the Greeley Canal No. 2. The peak 5- and
100-year discharges at Design Point 6 are 1.4 and 12.7 cfs respectively.
Basin 7 (13.0 acres) will drain overland, and in roadside ditches to Culvert 1 and
then in swales to the Retention Pond 1 located adjacent to the Greeley Canal
No. 2. The peak 5- and 100-year discharges at Design Point 7 are 2.1 and 12.7
cfs respectively.
4.4 Retention Pond 1
Retention Pond 1 is located in the southwest portion of the site adjacent to the
west property boundary, and south of the Greeley No. 2 Canal. This pond will
serve as a retention facility for the developed portion of the Sierra Acres P.U.D.
site, with the exception of Lot 1 (Basin 2) which will drain directly into the canal
undetained. The retained stormwater may be used for irrigating Outlot 3, which
will continue to be used for agricultural purposes.
V. DESIGN CRITERIA
5.1 Design References
Drainage criteria outlined in the Storm Drainage Criteria Manual by the Urban
_ Drainage and Flood Control District (Reference 1), has been referenced in the
preparation of this study.
5.2 Hydrologic Criteria
Due to the relatively small basin size the Rational Method has been used to
estimate peak stormwater runoff from the project site. Calculations made as part
of this investigation along with other supporting material, are contained in
Appendix A and B.
_ An initial 5-year design storm and, major 100-year design storm have been used
to evaluate the proposed drainage system as per Sec. 24-7-130 of the Weld
County Code. Rainfall intensity data for the Rational Method has been taken
Drainage Design Considerations Wohnrade Civil Engineers, Inc.
Sierra Acres P.U.D.-Change of Zone Application
July 20, 2005
Page 5
from IDF equations generated specifically for the Sierra Acres P.U.D. site by the
computer program "Watershed Modeling" by Eagle Point software. Input of
precipitation amounts for the generation of intensity equations have been taken
from the NOAA Atlas 2, Volume III-Colorado.
VI. EROSION CONTROL
6.1 Erosion Control Plan
The proposed rainfall erosion control plan during construction will consist of
temporary structural erosion control measures. Silt fencing will be installed along
the top of bank on the north side of the Greeley No. 2 Canal and along the west
property boundary south of the canal to prevent sediment migration.
Permanent vegetative erosion control will be used in conjunction with
landscaping surrounding future residences. Permanent revegetation of areas
disturbed by construction will be the responsibility of the contractor
VII. CONCLUSIONS
7.1 Compliance with Standards
All applicable drainage criteria have been complied with in accordance with the
"Weld County Code". The proposed drainage improvements do not adversely
impact surrounding properties.
This study conforms to the guidelines specified in Section 24-7-130 and Section
27-6-50, paragraph B, item 7, of the Weld County Code.
7.2 Variances
No variances are requested as part of this development.
Drainage Design Considerations Wohnrade Civil Engineers, Inc.
Sierra Acres P.U.D.-Change of Zone Application
July 20, 2005
•
Page 6
REFERENCES
1) Urban Storm Drainage Criteria Manual, Urban Drainage and Flood Control
District, Wright McLaughlin Engineers, Denver, Colorado, March, 1969.
2) Engineering Geology Report for a Proposed Subdivision Part of the E 'A of
Section 19, Township 6 North, Range 66 West of the 6th P.M., Weld County,
Colorado, July 26, 2004
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Exhibits
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WHICH IS NON-PRINTED AREA IS IN ZONE C.
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(THICKNESS TO BE DLI ERMINED IN FINAL DESIGN)
NOTE: PAVEMENT SECTION TO BE DESIGNED BY SOILS ENGINEER
AND APPROVED BY COUNTY ENGINEER PRIOR TO CONSTRUCTION
TYPICAL SECTION --- LOCAL ROADWAY
24' PAVEMENT W/ 4' SHOULDERS
NOT TO SCALE
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Appendix A
Historic Condition - 5 Year
Composite Runoff Coefficient Calculations
Character of Surface Runoff Project: Sierra Acres P.U.D.
Coefficient
Calculations By:M. Chalona
Streets:Paved 0.88
Date:July 18,2005
Streets:Gravel 0.45
Drives and Walks 0.87
Roofs 0.85
Undeveloped Areas 0.01
Runoff Coefficients are taken from the Urban Drainage and Flood Control District Drainage Criteria Manual,Table 3-1
Basin Basin Area of Area of Area of Area of Roofs Area of Weighted
ID Area Streets: Streets: Concrete Undeveloped Runoff
Paved Gravel Lawns,Sandy Soil Coefficient
(Acres) (Acres) (Acres) (Acres) (Acres) (Acres)
H1 20.3 0.04 0.00 0.00 0.00 20.26 0.01
H2 36.8 0.25 0.00 0.00 0.00 36.55 0.02
H3 23.3 0.84 0.00 0.00 0.00 22.46 0.04
H4 0.2 0.00 0.00 0.00 0.00 0.20 0.01
Total 80.6
SAPROJECTS\MBM\DRNG\CHANGE OF ZONEWBM-HistC.wpd
�' Historic Condition - 100 Year
Composite Runoff Coefficient Calculations
Character of Surface Runoff Project: Sierra Acres P.U.D.
Coefficient
—
Calculations By:M.Chalona
Streets:Paved 0.93
Date:July 18,2005
Streets:Gravel 0.60
—
Drives and Walks 0.89
Roofs 0.90
Undeveloped Areas 0.20
Runoff Coefficients are taken from the Urban Drainage and Flood Control District Drainage Criteria Manual,Table 3-1
Basin Basin Area of Area of Area of Area of Roofs Area of Weighted
ID Area Streets: Streets: Concrete Undeveloped Runoff
Paved Gravel Lawns,Sandy Soil Coefficient
(Acres) (Acres) (Acres) (Acres) (Acres) (Acres)
—
H1 20.3 0.04 0.00 0.00 0.00 20.26 0.20
H2 36.8 0.25 0.00 0.00 0.00 36.55 0.21
-
H3 23.3 0.84 0.00 0.00 0.00 22.46 0.23
H4 0.2 0.00 0.00 0.00 0.00 0.20 0.20
—
.0— Total 80.6
S:\PROJECTSUABM\DRNG\CHANGE OF Wohnrade Civil Engineers, Inc.
ZONE\MBM-HistC.wpd
I I I I I I I I I I I I I I I I I I 1
) ) )
Historic Condition: 5-yr Runoff Computations
Weld County, Colorado,
Intensity, (i)taken from intensity formula
Overland Flow, Time of Concentration: for Sierra Acres P.U.D., i =38.051(T0+9.12)0.76
T 1.8(1.1-05)L112/S113 Velocity, N)taken from Figure 3-1
Rational Equation: Q= ciA
Gutter/Swale Flow, Time of Concentration:
T,= L/60V Calculations By: M. Chalona
Project: Sierra Acres P.U.D.
T0= Ti + T, Date: July 18, 2005
Upstream Overland Flow Gutter Flow Swale Flow
Time of
Design Basins Concentration Area,A Runoff
Point (acres) Coefficient Length,L Slope,S T, Lengt,L Slopes Velocity,V T, Length,L Slopes Velocity,V T T Intenaity,i Flow,O
1, c Cy (ft) (%) (min) (n) (%) (fps) (min) (n) (%) (fps) mv, MIN 01/hr) (efs)
H1 H1 0.0 20.3 0.01 0.01 400 2.1 306 0.0 0.0 0.00 0.0 518.7 2.27 2.43 3.6 34.2 2.01 0.4
H2 H2 0.0 38.8 0,02 0,01 400 2.9 27.5 0.0 0.0 0.00 0.0 768.0 2.15 2.37 5.4 32.9 2.06 1.5
H3 H3 0.0 23.3 0.04 0.01 400 2.7 20.2 0.0 0.0 0.00 0.0 1149.7 0.38 0.99 193 47.4 1.63 1.5
H4 H4 0.0 0.2 0.01 0.01 20 35.0 2.7 0.0 0.0 0.00 0.0 0.0 0.00 0.00 0.0 5.0 4.82 0.0
S:\PROJECTS)MBM\DRNG\CHANGE OF ZONEWBM-HIstO,wpd Page 1 of 2 Wohnrade Civil Engineers, Inc.
I I I I I I I I I I I I I I I I I I I
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Historic Condition: 100-yr Runoff Computations
Weld County. Colorado
Intensity, (i)taken from intensity formula
Overland Flow, Time of Concentration: for Sierra Acres P.U.D., i =72.56/(T0+9.12)0.76
Ti= 1.8(1.1-05)L1n/S1'3 Velocity, (V)taken from Figure 3-1
Rational Equation: Q=ciA
Gutter/Swale Flow. Time of Concentration:
Tt= L/60V Calculations By: M. Chalona
Project: Sierra Acres P.U.D.
T0= TI+ T, Date: July 18, 2005
Upstream Overland Flow Gutter Flow Swale Flow
Time of
Design Basins Concentration Area,A Runoff
Point (acres) Coefficient Length,L Slope,S 7, Length,L Slope$ Ve'0090/ T, Length,L Slope,S Velocity,V T To Intensily,i Flow,0
T, c C, (ft) (%) (min) (ft) (%) (fps) (min) (ft) (%) (fps) IMO ,, , (inlhr) (cis)
-
H1 H1 0.0 20.3 0.20 0.01 400 2.1 30.6 0.0 0.0 0.00 0.0 518.7 2.27 r 2.43 3.6 34.2 3.84 15.6
H2 H2 00 36.8 0.21 0.01 400 2.9 27.5 0.0 0.0 0.00 0.0 766.0 2.15 2.37 5.4 32.9 3.93 30.4
H3 H3 00 23.3 0.23 0.01 400 2.7 26.2 0.0 0.0 0.00 0.0 1149.7 0.38 0.99 19.3 47.4 3.12 16.7
H4 H4 0.0 0.2 0.20 0.01 20 35.0 2.7 _ 0.0 0.0 0.00 0.0 0.0 0.00 000 0.0 5.0 9.20 0.4
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., User Name: Mary Date: 11-19-04
Project: MBM - MBM PUD Time: 16:45:50
._ Network: 00 - Page: 1
Rainfall Report
Rainfall Type Western
Rainfall Library Sierra Acres P.U.D.
— Western Precipitation
2yr/6hr 1.40 in
2yr/24hr 1.80 in
100yr/6hr 3.40 in
100yr/24hr 4.40 in
Elevation 4780.00
Rainfall Intensity (in/hr)
5 min 15 min 30 min 60 min 6 hr 24 hr
2 yr 3.45 2.26 1.56 0. 99 0.23 0.07
5 yr 4.87 3.19 2.21 1.40 0.31 0.10
10 yr 5.82 3.81 2.64 1. 67 0.37 0.12
25 yr 7.05 4. 62 3.20 2.03 0.44 0.14
50 yr 8.19 5.37 3.72 2.35 0.50 0.16
100 yr 9.28 6.08 4.22 2. 67 0.57 0.18
BDE Values Intensity = B/ (Tc + D) AE
B D E X Y
2 yr 26. 92 9.12 0.78 0.00 0.00
— 5 yr 38.05 9.12 0.78 0.00 0.00
10 yr 45.47 9. 12 0.78 0.00 0.00
25 yr 55.12 9. 12 0.78 0.00 0.00
50 yr 64.02 9.12 0.78 0.00 0.00
—
100 yr 72.56 9.12 0.78 0.00 0.00
_� Table 3-1
.. - RECOMMENDED RUNOFF COEFFICIENTS AND PERCENT IMPERVIOUS
-
Runoff Coefficients
Storm Frequency
Land Use or Percent
— Surface Characteristics Impervious 2 5 10 100
Business.
Commercial Areas 95 .87 .87 .88 .89
— Neighborhood Areas 70 .60 .65 .70 .80
Residential:
Single-Family .40 .45 .50 .60
Multi-Unit(detached) 50 .45 .50 .60 .70
Multi-Unit(attached) 70 .60 .65 .70 .80
'/2 Acre Lots or Larger * .30 .35 .40 .60
—1 Apartments 70 .65 .70 .70 .80
Industrial
Light Areas 80 .71 .72 .76 .82
—
Heavy Areas 90 .80 .80 .85 .90
parks. Cemeteries: 7 .10 .18 .25 .45
Playgrounds: 13 .15 .20 .30 .50
Schools. 50 .45 .50 .60 .70
Railroad Yard Areas: 20 .20 .25 .35 .45
Undeveloped Areas:
Historic Flow Analysis, 2 (See Lawns)
Greenbelts, Agriculture,
Offsite Flow Analysis 45 .43 .47 .55 .65
— (When land use not defined)
Streets:
Paved 100 .87 .88 .90 .93
Gravel (Packed) 40 .40 .45 .50 .60
Drives and Walks 96 .87 .87 .88 .89
—
Roofs: 90 .80 .85 .90 .90
Lawns, Sandy Soil 0 .00 .01 .05 .20
Lawns, Clayey Soil 0 .05 .15 .25 .50
* See Figure 2-1 for percent impervious.
—
\ 11-1-90
J\\
_ I IRnAIA npai ane CAI r1 FI nnn rrIAITR(ll nm-ro V`T YBY: 841].00 TABLE 3-1
WOHNRADE CIVIL ENGINEERS, INC.
05 Sheet
]]�w Yam so-.e< �\
Seale: RATIONAL METHOD Barrington. Illinois.
Fax: (847)38I-2746
Designed N,.: RUNOFF COEFFICIENTS 1
NA \Sheets/
1 I
-SIM
S
err
6V(*rAyn utP is rir r 4ftfs.rr.)
EQUATION FOR FIGURE 3-1:
PAVED: V=20.3282(s)o.s
- - - - UNPAVED: V=16.1345(s)°5
s= slope in ft/ftProje
U16/: 0413.00 TABLE 3-1
WOHNRADE CIVIL ENGINEERS, INC. 1
- . 05 AVERAGE VELOCITIES Sheet
"7.
FOR SHALLOW W. "°" noise`
Scale' 637 W.. M Ninue. 60010
NA Phone: (647)]61-2745, Fa. (647)361-2748
Designed By: CONCENTRATED FLOW 1
NA \Sheets/
- l
Appendix B
Developed Condition - 5 Year
- Composite Runoff Coefficient Calculations
Character of Surface Runoff Project: Sierra Acres P.U.D.
Coefficient
—
Calculations By:M. Chalona
Streets:Paved 0.88
Date:July 18,2005
Streets:Gravel 0.45—
Drives and Walks 0.87
Roofs 0.85
Undeveloped Areas 0.01
Runoff Coefficients are taken from the Urban Drainage and Flood Control District Drainage Criteria Manual,Table 3-1
Basin Basin Area of Area of Area of Area of Roofs Area of Weighted
ID Area Streets: Streets: Concrete Undeveloped Runoff
Paved Gravel Lawns,Sandy Soil Coefficient
(Acres) (Acres) (Acres) (Acres) (Acres) (Acres)
—
1 14.0 0.00 0.00 0.00 0.00 14.00 0.01
2 10.3 0.49 0.06 0.02 0.04 9.69 0.06
-
3 23.3 0.84 0.00 0.00 0.00 22.46 0.04
4 0.2 0.00 0.00 0.00 0.00 0.20 0.01
5 6.3 0.00 0.00 0.00 0.00 6.30 0.01
6 13.5 0.33 0.08 0.10 0.21 12.78 0.05
- 7 13.0 0.74 0.14 0.06 0.12 11.94 0.08
Total 80.6
5,6,7 32.8 1.07 0.22 0.16 0.33 31.02 0.05
-
S:IPROJECTS\MBM\DRNG\CHANGE OF Wohnrade Civil Engineers, Inc.
— ZONE MBM-DevC.wpd
Developed Condition - 100 Year
Composite Runoff Coefficient Calculations
Character of Surface Runoff Project: Sierra Acres P.U.D.
Coefficient
—
Calculations By:M.Chalona
Streets:Paved 0.93
Date:July 18, 2005
Streets:Gravel 0.60—
Drives and Walks 0.89
Roofs 0.90
—
Undeveloped Areas 0.20
Runoff Coefficients are taken from the Urban Drainage and Flood Control District Drainage Criteria Manual,Table 3-1
Basin Basin Area of Area of Area of Area of Roofs Area of Weighted
ID Area Streets: Streets: Concrete Undeveloped Runoff
Paved Gravel Lawns,Sandy Soil Coefficient
(Acres) (Acres) (Acres) (Acres) (Acres) (Acres)
—
1 14.0 0.00 0.00 0.00 0.00 14.00 0.20
2 10.3 0.49 0.06 0.02 0.04 9.69 0.24
-
3 23.3 0.84 0.00 0.00 0.00 22.46 0.23
4 0.2 0.00 0.00 0.00 0.00 0.20 0.20
5 6.3 0.00 0.00 0.00 0.00 6.30 0.20
6 13.5 0.33 0.08 0.10 0.21 12.78 0.24
7 13.0 0.74 0.14 0.06 0.12 11.94 0.26
Total 80.6
5,6,7 32.8 1.07 0.22 0.16 0.33 31.02 0.24
-
S:\PROJECTS\MBM\DRNG\CHANGE OF Wohnrade Civil Engineers,Inc.
ZONE\MBM-DevC.wpd
I I I I I I I I I I I I I I I I I I )
)
Developed Condition: 5-yr Runoff Computations
Weld County, Colorado
Intensity, (i)taken from intensity formula
Overland Flow, Time of Concentration: for Sierra Acres P.U.D., i =38.05/(T0+9.12)078
T;= 1.8(1.1-CS)L1'2/S1" Velocity, (V)taken from Figure 3-1
Rational Equation: Q=ciA
Gutter/Swale Flow. Time of Concentration:
T,= L/60V Calculations By: M. Chalona
Project: Sierra Acres P.U.D.
T0= Ti+T, Date: July 18, 2005
Upstream Overlong Flow Gutter Flow Swale Flow
Time of
Design Basins Concentration Nee,A Runoff Flow,
Point (acres) Coefficient Length,L Slope,S T, Length,L Slope,S Valocity,V T, Length,L Slope,S Velocity,V T T Intensity,' Q
T, c Cs (it) (%) (min) (8) (%) Mee) (min) (R) (%) (fps) ,mw (min) (in/hr) (cfs)
1 1 00 14.0 0.01 0.01 400 1.5 34.3 0.0 0,0 0.00 0.0 502.2 1.60 2.04 41 38.4 1.87 0.3
2 2 0.0 10.3 0.06 0.01 400 4.3 24.1 0.0 0.0 0.00 0.0 122.7 2.33 2.48 0.8 25.0 2.43 1.5
3 3 00 23.3 0.04 0.01 400 2.7 28.2 0.0 0.0 0.00 0.0 1149.7 0.38 0.99 19.3 47.4 1.63 1.5
4 4 0.0 0.2 0.01 0.01 20 35.0 2.7 0.0 0.0 0,00 0.0 0.0 0.00 0.00 0-0 5.0 4.82 0.0
5 5 0.0 6.3 0.01 0.88 303 4.0 4.3 0.0 0.0 0.00 0.0 0.0 0.00 0.00 00 5.0 4.82 0.3
6 6 0.0 13.5 0.05 0.01 400 2.9 27.5 0.0 0.0 0.00 0.0 766.0 2.15 2.37 5.4 32.9 2.06 1.4
7 7 0.0 13.0 0.08 0.01 400 1.8 32.3 0.0 0.0 0.00 00 493.8 2.84 2,72 3.0 35.3 1.97 2.1
5 5,6,7 0.0 32.8 0.05 0.01 400 1.8 32.3 0.0 0.0 0.00 0.0 1449.3 2.30 2.45 B9 42.1 1.77 2.9
S:\PROJECTS'MBM\DRNG\CHANGE OF Z0NE\MBM-Dev0.wpd Page 1 of 2 Wohnrade Civil Engineers, Inc.
I I I I I I I I I I I I I I I I I I I
) )
Developed Condition: 100-yr Runoff Computations
Weld County, Colorado,
Intensity, (i)taken from intensity formula
Overland Flow, Time of Concentration: for Sierra Acres P.U.D., i =72.56/(Tc+9.12)0.76
T= 1.8(1.1—05)L11/S1t3 Velocity, (V)taken from Figure 3-1
Rational Equation: Q= ciA
Gutter/Swale Flow.Time of Concentration:
T= L/60V Calculations By: M. Chalona
Proiect: Sierra Acres P.U.D.
T T; +T, Date: July 18, 2005
Upstream Overland Flow Gutter Flow Swab Flaw
Time of
Design Basins Concentration Area,A Runoff
Point (acres) Coefficient Length,L Slope,S T, Length,L Slope,S Velocity,V T, Length,L Slope,S Velocity,V T T, Intensity,' FIow,D
T, c C, (ft) (%) (min) (ft) (%) (fps) (min) (ft) (%) (tps) u,,,, ow (iNhr) (de)
1 1 O0 14.0 0.20 0.01 400 1.5 34.3 0.0 0.0 0.00 0.0 502.2 1.60 2.04 4.1 36.4 3.57 10.0
2 2 0.0 10.3 0.24 0.01 400 4.3 24.1 0.0 0.0 0.00 0.0 122.7 2.33 2.46 0.6 25,0 4.63 11.4
3 3 0.0 23.3 0.23 0.01 400 2.7 28,2 0.0 0.0 0.00 0.0 1149.7 0.38 0.99 19.3 47,4 3.12 16.7
4 4 0.0 0.2 0.20 0.01 20 35.0 2.7 0.0 0.0 0.00 0.0 0.0 0.00 0.00 0.0 5.0 9.20 0.4
5 5 0.0 6.3 0.20 0.88 303 4.0 43 0.0 0.0 0.00 0.0 0.0 0.00 0.00 0.0 5.0 9.20 11.6
6 6 0.0 13.5 0.24 0.01 400 2.9 27.6 0.0 0.0 0.00 0.0 766.0 2.15 2.37 5.4 32.9 3.93 12.7
7 7 0.0 13.0 0.26 0.01 400 1.8 32.3 0.0 0.0 0.00 0.0 493.8 2.84 2.72 3.0 35.3 3,76 12.7
I 5 5,8,7 0.0 32.8 0.24 0.01 400 1.8 32.3 0.0 0.0 0.00 0.0 1449.3 2.30 2.45 9A 42.1 3.37 26.5
S:\PROJECTSWIBM\DRNG\CHANGE OF Z0NE'MBM-DevQ.wpd Page 2 of 2 Wohnrade Civil Engineers, Inc.
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