HomeMy WebLinkAbout20143602.tiff SITE SPECIFIC DEVELOPMENT PLAN AND USE BY SPECIAL
REVIEW (USR) APPLICATION
FOR PLANNING DEPARTMENT USE DATE RECEIVED:
RECEIPT#/AMOUNT# /S CASE#ASSIGNED:
APPLICATION RECEIVED BY PLANNER ASSIGNED:
Parcel Number 0 7 1 9 3 3 0 0 0 0 0 2
(12 digit number-found on Tax I.D. information,obtainable at the Weld County Assessor's Office,or www.co.weld.cc.us)
Legal Description 3079 W2 33 7 60(2R) , Section 33 , Township 7 North, Range 69 West
Zone District:A , Total Acreage:40 , Flood Plain:Zone D , Geological Hazard: N/A ,
Airport Overlay District: N/A
FEE OWNER(S) OF THE PROPERTY:
Name: United Surface&Minerals, LLC (Steve Schmitz)
Work Phone# ij04o/.2-6OP?f-4ome Phone# Email S){ AU Q.6.29/Ag._,]D►ld,):$'5•CW►1
Address:201 West California Street
Address:
City/State/Zip Code Gainesville, California 76240
Name:
Work Phone# Home Phone# Email
Address:
Address:
City/State/Zip Code
Name:
Work Phone# Home Phone# Email
Address:
Address:
City/State/Zip Code
APPLICANT OR AUTHORIZED AGENT(See Below:Authorization must accompany applications signed by Authorized Agent)
Name:Select Energy Services (Harvey Greenwood)
Work Phone# (720) 378-5120 Home Phone# Email @selectenergyservices.com
Address: 1551 South Sunset Street Suite A hgreenwood@se1ectenergyservices.com
Address:
City/State/Zip Code Longmont, Colorado 80501
PROPOSED USE:
Well water storage and water load-out facility to support oil and gas operations.
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 indicatinthat the signatory has to legal authority to sign for the corporation.
Ci" &
Signature: Owner or Autho ed A nt /QDdte Signature: Owner or Authorized Agent Date
(Steve Schmitz)
arhq4p
1 DEPARTMENT OF PLANNING SERVICES
111 1555 N 17th AVE
GREELEY, CO 80631
C PHONE: (970) 353-6100, Ext. 3540
COLORADO FAX: (970) 304-6498
AUTHORIZATION FORM
I Select Energy Services(Harvey Greenwood) represent United Minerals (Steve Schmitz) for the property
(Agent/Applicant) (Owner)
located at along CR 74 within_tb_e p[9po_sed Weitzel USR,-thtW2_of SSecii9_n 33,_T7N_R6OW of the 6th
LEGAL DESCRIPTION: SEC 33 TWN 7N RNG 60W
SUBDIVISION NAME: N/A LOT N/A BLK N/A
I can be contacted at the following phone #'s: Home
Work (970)#####x##324-9342
Fax# (970)#1#041441#6,44 (303) 651-6219
The property owner can be contacted at the following phone#'s
I tome
Work_ 9�0/2'�.Z.Z,
Fax# Rgtb-(o&5-32,47
Correspondence mailed to (only one): X❑ Agent/Applicant
❑ Property Owner
DATE
OWNER'S SIGNATURE � (Steve Schmitz)
MSS
USE BY SPECIAL REVIEW (USR) QUESTIONNAIRE
WEITZEL SEC 33 WATER FACILITY
WELD COUNTY, COLf)RADO
On behalf of our client, Select Energy Services, Lamp, Rynearson &Associates is filing a Use by Special
Review application for the Weitzel Sec 33 Water Facility located within the Weitzel Ranch, located in the
west half of Section 33,Township 7 North, Range 60 West. More specifically the property is located
approximately 8,000 feet west of the intersection of Weld County Road (WCR) 74 and WCR 105. This is
approximately 14 miles southwest of New Raymer.
The following questions are to be answered and submitted as part of the USR application. If a
question does not pertain to your use, please respond with "not applicable",with an explanation as to
why the question is not applicable.
1. Explain, in detail,the proposed use of the property.
The proposed Use by Special Review is for a well water storage and a water load-out facility.
The property contains an 80,000 barrel capacity reservoir with three (3) truck filling bays.The
reservoir is filled by an existing on-site water well. The non-potable water is used to support oil
and gas operations including drilling and hydraulic fracturing.
The facility is operated by Select Energy Services and is used to provide water for oil and gas
operations on the Weitzel Ranch and surrounding areas. The facility will encumber
approximately 10.8+/-acres of a larger 80 acre parcel. For projects located within the Weitzel
ranch, water can be piped from the reservoir using ten (10) inch Victaulic pipe that can span
distances up to 14 miles from the reservoir. Through the use of piping, the volume of truck
traffic on county roads is greatly reduced. For surrounding projects not located within the ranch
boundary, water will be trucked off-site. Trucks will enter the property using the existing access
road, load water at the filling bay and then exit the property.
The facility does not have daily operations such as a permanent office or maintenance facilities.
The site will be accessed by truck drivers picking up water, by employees checking on the facility
to ensure that the facility is within good working condition or by a pipe laying crew installing
piping and plumbing for a specific project. Since the site does not have permanent facilities, it is
not envisioned that the site would have enhanced landscaping. The site is located within a
ranch and fenced from cattle so areas disturbed will be re-seeded with native grasses.
Additionally, the site will not have permanent signage, parking spaces, or lighting.
2. Explain how this proposal is consistent with the intent of the Weld County Code, Chapter 22 of the
Comprehensive Plan.
The Weitzel Sec 33 Water Facility is consistent with Section 22-2-10 Agriculture and Section 22-2-20
Agriculture goals and policies, of Chapter 22 of the Weld County Code. The property is currently
zoned agriculture, A.
This facility preserves the existing rangeland of the property yet incorporates a much needed
support service for the oil and gas industry. Weld County's Comprehensive plan recognizes that
agriculture and extraction of natural resources are vital to the County's economy.The project
Lamp, Rynearson&Associates, Inc. Page 1
Project No.0212010.00
MSS
positively supports mineral extraction within agriculture lands by minimizing impacts to County's
roads by reducing the number of trucks trips and reducing the number of miles driven by the trucks.
3. Explain how this proposal is consistent with the intent of the Weld County Code, Chapter 23
(Zoning)and the zone district in which it is located
As previously noted,the Weitzel Sec 33 Water Facility is currently zoned agriculture, A. The
proposed USR is consistent with Section 23-3-10 Agriculture and Section 23-3-40 Agriculture
Intent and Uses by Special Review respectively, of Chapter 23 of the Weld County Code.
This facility preserves the existing rangeland of the property per the intent of chapter 23 while
applying an acceptable use by special review (commercial/industrial) as noted in section 23-3-40
(A and S). The intent of the project, as noted in question number 2 above is that the site will
provide support service for the oil and gas industry.
4. What type of uses surround the site(explain how the proposed use is consistent and compatible
with surrounding land uses).
The Weitzel Sec 33 Water Facility is adjacent to the following properties:
• To the east is an approximately 198 acre parcel zoned agriculture (A) containing a residence
along the north property line.
• To the west is the remaining portion of the property outside of the USR boundary, also zoned
agriculture (A). The land is part of the Weitzel Ranch.
• To the north is the remaining portion of the property outside of the USR boundary, also zoned
agriculture (A). The land is part of the Weitzel Ranch.
• South of County Road 74 is Morgan County. Land uses appear to be either open pasture or
farmland.
The proposed use is compatible with the surrounding uses as the property is surrounded on the
north, west, and east by the same zoning (A). All surrounding properties appear to be open pasture,
grazing land, or farmland.
5. Describe, in detail,the following:
a) Number of people who will use site:
This site will not have full time employees on-site.The site will be accessed by truck
drivers picking up water, by employees checking on the remote facility to ensure that
the facility is within good working condition or temporarily by a pipe laying crew
installing piping and plumbing for a specific project. Generally the site will have days
with zero (0) people on site to an approximate maximum of forty(40) people on site in a
24-hour period during peak trucking operations. On average over the course of a year,
between trucks and operations,there may be sixteen (16) visits to the site per day.
b) Number of on-site employees:
This site will not have full time employees on-site. On average, the site will be accessed
by 15 water haulers per day to pick up water and one employee per day for
maintenance of the property.
Lamp, Rynearson&Associates, Inc. Page 2
Project No.0212010.00
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c) Hours of operation:
The site will not have full time operations.The reservoir will be managed, filled, and
emptied, by telemetry. However,the specific times that water haulers will access the
facility will vary. Potentially, water haulers can access the site twenty four hours a day,
seven days a week, every day of the year.
d) Type and number of structures to be built:
No proposed structures (large buildings) are being built.The existing facility includes
an 80,000 barrel storage pond, a skid mounted pump house building, and a three
bay load out facility for water trucks.
e) Type and number of animals:
The property is a ranch so the existing cattle will remain on site. A barbed wire fence
protects the reservoir and the well from cattle.
f) Kind of vehicles(type, size,weight)that will access this site and how often:
1. The site is accessed by an existing oil well lease road.The existing traffic to the oil well
site will continue to use this road.
2. Additionally, it is anticipated that vehicles will consist of:
a. On average, one trip per day for miscellaneous maintenance to the facility
using a Select Energy Services pickup truck.
b. On average, 5 trips per 8 hour day by 130 barrel capacity tanker trucks,
comparable to WB-50 trucks. During peak operations an estimated
maximum of 13 trips per 8-hour day may be required for a period of 15 days
and distributed such that during 8 hours the peak hour may have 2 or 3 trips
Please refer to the Traffic Narrative provided with this submittal.
g) Who will provide fire protection to the site:
Fire protection for the site will be provided by the Briggsdale Fire Protection District.
h) Water source on the property:
The site will not have potable water since there are no facilities located on-site.
i) Sewage disposal system on the property:
The site will not have sewer service since there are no facilities located on-site. Portable
toilet facilities will be provided for truck drivers.
j) If storage or warehousing is proposed,what type of items will be stored:
No storage or warehousing will be located on site.
6. Explain the proposed landscaping for the site.The landscaping shall be separately submitted as a
landscape plan map as part of the application submittal.
Lamp, Rynearson&Associates, Inc. Page 3
Project No.0212010.00
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Since the site is located within agricultural property that is sparsly vegetated, all
disturbed areas are reseeded with native grass mixes.
7. Explain any proposed reclamation procedures when termination of the Use by Special Review
activity occurs.
It is not envisioned that the operations will be terminated but if they are pipe will be
removed from the ground, pond liner will be removed, embankments will be graded to
fill in the existing pond,fences will be removed, and seeding will be used to stabilize the
area disturbed. The access to the site will remain since was an existing access for
agriculture and a lease access for existing oil/gas facilities on site.
8. Explain how the storm water drainage will be handled on the site:
Stormwater drainage will continue to follow historic patterns. In general, stormwater
travels from the northeast to the southwest across the site. Stormwater does not
overland flow into the water storage pond,therefore the only stormwater that will
enter the pond would be directly from a precipitation event. Runoff from gravel access
and turnaround areas will sheet flow to basic best management practices for water
quality and detention if necessary. Please refer to the Drainage Analysis provided with
this submittal.
9. Explain how long it will take to construct this site and when construction and landscaping is
scheduled to begin.
The site has been constructed and is operable today. This USR is to allow the change in
use from a storage pond originally used for water distribution by pipe.The change in use
is to allow truck hauling operations when needed.
10. Explain where storage and/or stockpile of wastes will occur on this site:
No storage or stockpiles of wastes are anticipated on site.
11. Please list all proposed on-site and off-site improvements associated with the use (example:
landscaping,fencing, drainage,turn lanes, etc.)and a timeline of when you will have each one of
the improvements completed.
Improvements to this site are minimal. Originally the site was developed with a grading
permit to allow the use by right. The grading permit improved an existing oil and gas
lease road to provide access to the new water well and water storage pond. As part of
the access to the pond, a turnaround was provided for trucks which was improved to
allow for a water load out facility. Those improvements are currently in place. With this
USR, there are not expected to be any additional improvements with the expectation of
adding a small water quality improvement pond to capture runoff from the water load
out area which is constructed of a gravel drive surface. To address basics, existing
fencing is barbed wire to keep cattle away from the existing pond, away from the wells,
and off of existing access roads and county roads. Disturbed areas were reseeded with
native seed mixes. Drainage improvements were kept to a minimum to promote sheet
flow and percolation rather than developing concentrated flows that could produce
more significant erosion. As noted, no additional improvements are foreseen with the
exception of the small water quality improvement pond. That pond will be constructed
with approval of the drainage memo included with this application.
Lamp, Rynearson&Associates, Inc. Page 4
Project No.0212010.00
yq C O&
Weld County Public Works Dept.
4. 1111H Street ACCESS PERMIT
I.pr � P.O. Box 758
G� ` ,.e.9 k- Greeley,CO 80632 APPLICATION FORM
1-/C Phone: (970)304-6496
Fax: (970)304-6497
Applicant Property Owner(If different than Applicant)
Name Weitzel Sec 33 Water Facility Name United Surface&Minerals
Company Select Energy Services Address C/O Merit Advisors LP, P.O. Box 330
Address 1551 S.Sunset Street, Suite A City Gainesville State TX Zip 76241
City Longmont State CO Zip 80501 Phone
Business Phone (720)378-5425— `3 (3( Fax
Fax(303)651-6219 E-mail
E-mail BFronczak@selectenergyservices.com
Existing Access A=Proposed Access
Parcel Location&Sketch
The access is on WCR 74
Nearest Intersection:WCR 74 &WCR 105 -WC-e- WCR76
Distance from Intersection 8,050 FT
Parcel Number 071933000002
Section/Township/Range Section 32,T3N, R65W 1' SITE
Is there an existing access to the propertyt'ES NO❑ N
Number of Existing Accesses 1
\t/
Road Surface Type&Construction Information `
Asphalt ❑ Gravel ❑✓ Treated ❑ Other WCR74
Culvert Size&Type N/A WCR97 WCR
Materials used to construct Access N/A
Construction Start Date N/A Finish Date N/A
Proposed Use
°Temporary(Tracking Pad Required)/$75 ()Single Residential/$75 ®Industrial/$150
()Small Commercial or Oil&Gas/$75 OLarge Commercial/$150 °Subdivision/$150
Q Field (Agriculture Only)/Exempt
Is this access associated with a Planning Process? ONo QUSR O R OPUD °Other
Required Attached Documents
-Traffic Control Plan -Certificate of Insurance -Access Pictures(From the Left, Right,& into the access)
By accepting this permit,the undersigned Applicant,under penalty of perjury,verifies that they have received all pages of the permit
application;they have d and underst d all of the permit requirements and provisions set forth on all pages;that they have the
authority to sign f and bind th ppl' ant if th Applicant is a corporation or other entity;and that by virtue of their signature the
!Applicant is bo d by an a es / ampl'i ' h all said permit requirements and provisions,all Weld County ordinances,and state laws
regarding faci sties con r do
y 1
SignatiaF Printed Name 'i ( rr 1 tx-t e. Date Y�
Approval or Denial will be iss ed in minimum of 5 days. Approved by
Revised Date 6/29/10
/SS\
JIB
July 25, 2014 LAMP RYNEARSON
& ASSOCIATES
ENGINEERS I SURVEYORS I PLANNERS
4715 Innovation Drive, Suite 100
Ms. Jennifer Petrik Foil Collins, Colorado 80525
Weld County Public Works [P] 970 226.0342
1111 H Street [F] 970 226 0879
Greeley, Colorado 80632 ` wvv LRA-Inc corn
RE: Traffic Narrative
Weitzel Sec 33 Water Facility
Section 33, Township 7 North, Range 60 West
Weld County
LRA Project No. 0210012.00
Dear Ms. Petrik:
Per the County's request, Lamp, Rynearson and Associates (LRA) is providing a traffic narrative
regarding the traffic associated with the proposed use, the Weitzel Sec 33 Water Facility. The property is
located in the west half of Section 33, Township 7N, Range 60 West. More specifically the property is
located approximately 8,000 feet west of the intersection of Weld County Road (WCR) 74 and WCR 105.
The proposed facility is a well water storage and a water load-out facility. The property contains an
80,000 barrel capacity reservoir with three (3) truck filling bays. The reservoir is filled by an existing on-
site water well. The non-potable water is used to support oil and gas operations including drilling and
hydraulic fracturing. The facility is operated by Select Energy Services.
The site will utilize the existing oil and gas lease access road from Weld County Road 74. Anticipated
truck traffic to the site includes WB-50 130 barrel water tankers and Select Energy Services personnel
pickups. The water facility will be used to provide water for oil and gas drilling operations and hydraulic
fracturing jobs. It is the intent of this facility to provide water for oil and gas operations within the Weitzel
Ranch and therefore will use piping to deliver water to various drill sites up to 14 miles from the facility.
Through the use of piping this facility will significantly reduce the number of truck traffic on the
surrounding Weld County roads. For projects not located within the ranch boundary water will be trucked
offsite.
It is expected that trucks exiting the facility will travel along two different routes. For trucks headed north,
the anticipated haul route is to exit the facility and travel east along WCR 74 and then north onto WCR
105. For trucks traveling south, the anticipated haul route is to exit the facility and travel west along WCR
74 and then south onto Morgan County Road 2. The haul route utilized by the trucks will be determined
by the location of the job. No staging of trucks will occur on WCR 74. Per the Weld County 2035
Transportation Plan, WCR 74 from WCR 101 to WCR 103 is classified as a local road with a capacity of
two hundred (200) vehicles per day. Weld County Road 105 from WCR 74 to 76 is classified as a
collector, also with a capacity of two hundred (200) vehicles per day.
The site will not have full time employees on-site; however it can be assumed that the site will be
accessed daily by a Select Energy Services employee to ensure proper maintenance of the facility.
Personnel accessing the site will be driving typical pickup trucks. For normal operations, the average
number of trips to the facility by water tankers is anticipated to be three (3)trips per 8-hour day. When a
hydraulic fracture requires water an estimated maximum of thirteen (13)trips per 8-hour day may be
required for a period of 15 days and distributed such that during 8 hours the peak hour may have 2 or 3
trips. The water tankers have a 130 barrel capacity and can be considered WB-50 type trucks.
Loavir,q a Lognry cif Enduring imiimvornonls In Our C,nn nn nrifir>s .
ENGINEERS SURVEYORS PLANNERS
Traffic Narrative
Weitzel Sec 33 Water Facility
July 25, 2014
Page 2 of 2
On average, the Weitzel Sec 33 Water Facility will result in an increase of sixteen trips per day to the
surrounding county roads. However, the facility is ultimately greatly reducing truck traffic to the
surrounding roads by providing a facility that delivers water to various oil and gas locations via a pipe
network. In conclusion, the proposed facility will not create a significant increase to the average daily
traffic that is already being experienced on WCR 74 and therefore no public improvements to the road or
the existing access are proposed.
Please contact us if you require any further information or have any questions.
Sincerely,
LAMP RYNEARSON & ASSOCIATES, INC.
John Tufte, PE
Project Manager
MSS
DUST ABATEMENT PLAN
SELECT ENERGY SERVICES
WEITZEL SEC 33 WATER FACILITY
WELD COUNTY, COLORADO
Through the life of this project, Select Energy Services will utilize watering and other best
management dust suppression practices to control fugitive dust.
On unpaved roads, Select Energy Services will utilize water trucks as needed to control dust.
Vehicle speeds will also be limited to ten miles per hour to reduce dust. The main access drive,
truck circulation areas, and truck loading areas are constructed with road base, thereby
reducing dust emission.
If areas are disturbed due to facility maintenance activities, disturbances will be watered to
control dust as needed and vehicle speeds will be limited to ten miles per hour. Revegetation of
the disturbed area shall be completed within one year. To prevent dust emissions, disturbed soil
shall be furrowed a minimum of six inches deep at right angles to prevailing winds. If needed,
silt fence shall be installed as a wind break.
Water used for dust suppression will be provided by the onsite source and Select water trucks.
Lamp, Rynearson&Associates, Inc. Page 1
Select Energy Services
Weitzel Sec 33 Water Facility
Project No.0212010.00
MSS .1
WASTE HANDLING PLAN
SELECT ENERGY SERVICES
WEITZEL SEC 33 WATER FACILITY
WELD COUNTY, COLORADO
Purpose
The purpose of the plan is to project the quantities and types of waste that will be generated through
operation of the Facility and to detail the management and disposition of this waste.The plan will
further outline the operational chemicals that will be stored on-site and that may require future
disposal.
Objective
The objective of this plan is to ensure waste generated at the Facility is managed according to all Local,
State and Federal regulations. Further, the plan will define operational chemicals used or stored on site
requiring specific disposal pathways.The plan is written to provide training and guidance to site workers
to ensure all materials are properly handled and disposed.
Site Specifics
Select Energy Services has detailed policies and procedures in place that will be applied to the specifics
of any spill or release resulting from the operations.
Solid Waste:
Solid waste generated by the proposed use will be collected and disposed of by a contracted waste
disposal company. No hazardous waste will be generated by the proposed use. Solid waste generation is
on anticipated at this facility, however if waste transportation is required the following companies
would be contracted:
Hauler: Waste Management
7780 East 96th Avenue, Henderson, Co 80640
(303) 797-1600
Solid Waste Disposal Facility: Waste Management- North Weld Landfill
40000 WCR 25
Ault, CO 80610
Waste Management- Buffalo Ridge Landfill
11655 WCR 59
Keenesburg, CO 80643
Lamp, Rynearson&Associates, Inc. Page 1
Select Energy Services
Weitzel Sec 33 Water Facility
Project No.0212010.00
MSS .1
Storage of Chemicals:
Pump House
Fl Use: Shelter for well
J No chemical storage within building
No chemicals or solvents will be stored on the proposed facility. However should hauling services
(including bulk waste disposal and transportation and disposal services) be necessary, Select ENERGY
Services will contract with Saftey-Kleen. In addition, if remediation services (including spill clean and
emergency response) become necessary, Saftey-Kleen's partner company Clean Harbors will be
contracted.
Hauler: Safety-Kleen
2801 South Tejon, Englewood, CO 80110
(303) 761-8614
Remediation: Clean Harbors (Safety-Kleen)
2801 South Tejon, Englewood, CO 80110
(303) 761-8614
Lamp, Rynearson&Associates, Inc. Page 2
Select Energy Services
Weitzel Sec 33 Water Facility
Project No.0212010.00
FOR COMMERCIAL SITES, PLEASE COMPLETE THE FOLLOWING INFORMATION
BUSINESS EMERGENCY INFORMATION:
Business
Name:Weitzel Sec 33 Water Facility Phone: N/A
Address:West half of Section 33, Township 7N, Range 60W City, ST, zip:Weld County, Colorado
Business
Owner:Select Energy Services Phone: (720)378-5120
Home Address: 1551 S. Sunset Street, Suite A City, ST, Zip: Longmont, CO 80501
List three persons in the order to be called in the event of an emergency:
NAME TITLE ADDRESS PHONE
Harvey Greenwood, Fluidity Operations Manager, Rockies, SES 1551 S Sunset Str, Longmont 80501, 970.324.9342
Jeffrey Anderson, Fluidity Opportunity Manager, Rockies "". 303.859.4609
William Fronczak, Director of Fluidity, Rockies, " " 404.788.8719
Business
Hours: 24 hours/day Days:7 days/week
Type of Alarm: None Burglar Holdup Fire Silent Audible
Name and address of Alarm Company: N/A
Location of Safe: N/A
********,************************************************************************************************************************
MISCELLANEOUS INFORMATION:
Number of entry/exit doors in this building: 2 doors Location(s): Site contains a 8'x10'x12'corrugated metal
pump house building. The pump house contains 2 large service doors.
Is alcohol stored in building?No Location(s):
Are drugs stored in building?No Location(s):
Are weapons stored in building?No Location(s):
The following programs are offere a public service of the Weld Coun ri f's Office. Please indicate the
programs of interest. Physical Security Check Crime Prevention Presentation
UTILITY SHUT OFF LOCATIONS:
Main Electrical:At control panel on pump house
Gas Shut Off: N/A
Exterior Water Shutoff: N/A
Interior Water Shutoff:N/A
Walt\
JIB
LAMP RYNEARSON
July 25, 2014 & ASSOCIATES
ENGINEERS I SURVEYORS I PLANNERS
4715 Innovation Drive, Suite 100
Ms. Jennifer Petrik Fort Collins, Colorado 80525
[P] 970 226 0342
Weld County Public Works [F] 970 226.0879
1111 H Street wn.w.LRA-Inc cam
Greeley, Colorado 80632
RE: Drainage Analysis
Weitzel Sec 33 Water Facility
Weld County, CO
LRA Project No. 0213026.00
Dear Ms. Petrik:
LRA have completed a drainage analysis for the Weitzel Sec 33 Water Facility (site), located within
the west half of Section 33, Township 7 north, Range 60 west, Parcel Number 071933000002. More
specifically the property is located approximately 8,000 feet west of the intersection of Weld County
Road (WCR) 74 and WCR 105. This is approximately 14 miles southwest of New Raymer. The
existing site is comprised of agricultural-grazing land with soils consisting of Olney fine sandy loam
and Ascalon fine sandy loam. The area considered for this drainage analysis accounts for
approximately 10.8 acres of the approximate 318 acres of the platted parcel. Existing structures within
the parcel include oil and gas wells and associated production equipment including an access road.
Site Conditions
Site conditions include a ± 1.7 acre, freshwater storage pond and gravel access road with turn-around
and a three truck loading area for fresh water hauling. An emergency spillway is proposed for the west
side of the pond and will direct flow to an existing drainage way through the property. The site will be
accessed from WCR 74 via the existing oil and gas access road running north to south. In general,
stormwater flows overland from the northeast to the southwest across the site. An existing drainage
way exists along the top edge of the ridge located in the approximate center of the 40 acre USR
boundary.
Analysis & Results
A drainage area of 10.85 acres was defined for the the purposes of the following calculations. This
area encompasses the facility located within a barbed wire fence. The existing conditions of the
property were analyzed as the historic condition. Prior to construction, the property was used primarily
for grazing with an oil and gas access road. The percent impervious was calculated to be 1.0%. With
the addition of the reconstructed access road, gravel turn around, loading area, and pump house, the
percent impervious was calculated to be 7.0%. The increase in imperviousness resulted in a minor
increase in peak runoff. For the 10-year and 100-year design storms, the peak runoff increased by 2.4
Ltvnvinq II Lrgnry of Enduring Imprnvmnontc to Our C111111111111/110S - u r Ats-&1='.n.:
ENGINEERS SURVEYORS PLANNERS
and 3.6 cfs respectively.
The fresh water storage pond is not intended to capture surface stormwater flows and only receives
storm event precipitation. The pond is designed to include an emergency spillway. Given the pond
water surface area and an assumed 100% imperviousness for the water surface, a 100-year peak
flow rate of 12.5 cfs was calculated. The emergency spillway was designed to convey the peak flow
rate resulting in spillway dimensions of 40-foot in length by 0.5-foot in depth. In addition, the pond
design allows for one-foot of freeboard above the maximum freshwater storage surface elevation.
Therefore, the emergency spillway and overflow channel would be implemented only after the one-
foot freeboard depth has been used.
See attached supporting calculations.
Conclusion
The proposed site conditions result in a minor increase in peak runoff rates. Stormwater drainage will
continue to follow historic patterns. The freshwater storage pond is not intended to receive surface
runoff and will only capture storm precipitation. The emergency spillway was conservatively sized to
pass the 100-year design storm event.
If you have any questions or concerns, please feel free to contact me at your convenience.
Sincerely,
LAMP, RYNEARSON & ASSOCIATES, INC.
John Tufte, PE
Project Manager
Drainage Calculations
Select Energy Services 8/8/2013
Weld County,Colorado 0212010.00
BASIN IMPERVIOUS CALCS
Total Area,A Area of Each Land Use,ac
Basin Description Acres Roofs Pavement Gravel Road Landscape Impervious,I IA Notes
90% 100% 40% 0%
Existing Existing access road 10.850 0.000 0.000 0.394 10.456 1% 0.16
Developed Improved road with load out area 10.850 0.003 0.000 1.914 8.933 7% 0.77
Storm Runoff Calculations 0211024 vi.xlsx Lamp Rynearson
Select Energy Services 0/0/2613
Weld County,Colorado 0211020.00
BASIN DESCRIPTION
Basin Runoff Coefficient Overland Flow Gutter Flow
1 2 3 0 5 6 Weighted Total
Number Area Description %Imp C2 C5 C10 C100 L1 St L2 52 Cv V2 L3 53 Cv V3 L0 50 Cv V0 L5 35 Cv V5 L6 Sb Cv V6 Slope Length
(acres( (n) (%) (0) (%) (Es) (h) (%) (Es) (h) (%) (ne) (h) (%) (fie) (n) (%) (f/s) CA)
Existing 1005 Existing access toad 1% 003 008 0.15 035 333 30 32 C _ 00 07 532
0
Developed 1005 Improved road with load out area 7% 005 0.12 020 039 i= 3 0 32 C 2 C 09 0] 532
Notes
Storm Runoff Calculations 0211020 vi also Lamp Rynearson
Select Energy Services 8/8/2013
Weld County,Colorado 0212010.00
TIME OF CONCENTRATION CALCULATIONS
INIT. INIT. /NIT TM 1 TRVL 2 TRVL 3 TRVL 4 TRVL 5 TRVL 6 Tc= Total Tc= TOTAL
BASIN L1 S1 C5 Ti L2 V T2 L3 V T3 L4 V T4 L5 V T2 L6 V T6 Sum Ti L 10*(L/180) Tc
(ft) (%) (min) (ft) (f/s) (min) (ft) (f/s) (min) (ft) (f/s) (min) (ft) (f/s) (min) (ft) (f/s) (min) (min) (feet) (min) (min)
Existing 500 0.8 0.08 9.9 32 0.4 1.2 0 0.0 0.0 0 0.0 0.0 0 0.0 0.0 0 0.0 0.0 11.1 532 11
Developed 500 0.B 0.12 9.6 32 0.9 0.6 0 0.0 0.0 0 0.0 0.0 0 0.0 0.0 0 0.0 0.0 10.2 532 10
Storm Runoff Calculations 0211024 v1.xlsx Lamp Rynearson
Select Energy Services 8/8/2013
Weld County,Colorado 0212010.00
STORM DRAINAGE CALCULATION
Basin Characteristics Intensities Sub-basin
Type AREA C2 C5 O10 C100 Tc* 12 15 110 1100 O O O O
BASIN 2-yr 5-yr 10-yr 100-yr
(acres) (min) (in/hr) (in/hr) (in/hr) (in/hr) (cfs) (cfs) (cfs) (cfs)
Existing Existing access road 10.850 0.03 0.08 0.16 0.36 11.1 2.69 3.86 4.63 7.41 0.7 3.3 8.1 28.8
Developed Improved road with load out area 10.850 0.05 0.12 0.20 0.39 10.2 2.79 4.00 4.81 7.68 1.4 5.0 10.5 32.5
*If time of concentration was less than 5 minutes,5 minutes was used.
"Intensities derived using Equation RA-3
Storm Runoff Calculations 0211024 v1.xlsx Lamp Rynearson
Depth-Duration-Frequency and Intensity-Duration-Frequency
Tables for Colorado Hydrologic Zones 1 through 4
Blue cells are inputs.
Project: Weitzel Sec 33 Water Facility
— Where is the Watershed Located?
Hydrologic Zone(1,2,3,or 4)= 1 (see map)
C Located within UDFCD Boundary Elevation at Center of Watershed= 4,935 ft
L Located outside of UDFCD Boundary Watershed Area(Optional)= N/A sq.mi.
(Optional)Select a location within the UDFCD boundary: w
1. Rainfall Depth-Duration-Frequency Table
If within the UDFCD Boundary, Enter the 1-hour and 6-hour rainfall depths from the USDCM Volume 1.
Otherwise, Enter the 6-hour and 24-hour rainfall depths from the NOAA Atlas 2 Volume III.
Return Rainfall Depth in Inches at Time Duration
Period 5-min 10-min 15-min 30-min 1-hr 2-hr 3-hr I 6-hr 24-hr
2-yr 0.29 0.47 0.59 0.68 1.04 1.16 1.25 1.40 1.70
5-yr 0.42 0.67 0.84 0.97 1.48 1.62 1.73 1.90 2.20
10-yr 0.50 0.80 1.00 1.16 1.77 1.92 2.03 2.20 2.60
25-yr 0.60 0.96 1.21 1.40 2.13 2.33 2.47 2.70 3.20
50-yr 0.70 1.12 1.41 1.63 2.48 2.66 2.79 3.00 3.50
100-yr 0.79 1.26 1.59 1.84 2.80 3.01 3.16 3.40 3.90
500-yr 0.99 1.58 1.99 2.30 3.51 3.74 3.92 4.19 4.83
Note: Refer to Figures 4-1 through 4-12 of USDCM Volume 1 for 1-hr and 6-hr rainfall depths.
Refer to NOAA Atlas 2 Volume Ill isopluvial maps for 6-hr and 24-hr rainfall depths.
Rainfall depths for durations less than 1-hr are calculated using Equation 4-4 in USDCM Volume 1.
2. Rainfall Intensity-Duration-Frequency Table
Return Rainfall Intensity in Inches Per Hour at Time Duration
Period 5-min 10-min 15-min 30-min 1-hr 2-hr 3-hr 6-hr 24-hr
2-yr 3.51 2.80 2.35 1.62 1.04 0.64 0.48 0.28 0.10
5-yr 5.01 4.00 3.35 2.32 1.48 0.92 0.68 0.40 0.14
10-yr 5.99 4.78 4.01 2.77 1.77 1.10 0.81 0.48 0.16
25-yr 7.24 5.77 4.84 3.35 2.13 1.33 0.98 0.58 0.20
50-yr 8.41 6.71 5.63 3.89 2.48 1.54 1.14 0.68 0.23
100-yr 9.51 7.58 6.36 4.40 2.80 1.74 1.29 0.77 0.26
500-yr 11.89 9.48 7.96 5.50 3.51 2.18 1.62 0.96 0.33
Note: Intensity approximated using 1-hr rainfall depths and Equation 4-3 in USDCM Volume 1.
UD-Rain v1.01.xlsm, DDF& IDF Tables 8/8/2013, 1:00 PM
Depth-Duration-Frequency and Intensity-Duration-Frequency
Tables for Colorado Hydrologic Zones 1 through 4
i
i
j
I 'C
i j
I
I
I '
4.
I
I
I
li I „
I
I
i COLORA00
o �e, .oe ��o, �o. ..,...,. ,o, ., ,.. ,.�.,
Design Rainfall IDF & DDF Chart t24-hr depth
O 6-hr depth
6 0
—R-3-hr depth
2-hr depth
2
5 —M-1-hr depth
/ D 30-min depth
4 �
O r X15-min depth
N 4
j
t 0 10-min depth
u 6
tr...
c —8-5-min depth
c 3 O SCI Y
24-hr intensity
O in
10 a 6-hr intensity
`c A
m O
C 2 GJ jp 3-hr intensity
O w
C
-
10 •
A ❑ 2-hr intensity
cC
° 1-hr intensity
o
1 ❑
❑ 12 30-min intensity
o
15-min intensity
0 14 10-min intensity
1 10 100
Return Period(years) —5-min intensity
UD-Rain_v1.01.xlsm, DDF&IDF Tables 8/8/2013, 1:00 PM
Weitzel Sec 33 Water Facility
Time of Concentration - Residence Time (spillway sizing)
Lot No. 1
Time of Concentration
Initial Flow
C5 = 0.96 Table RO-5, Soil Group B
Length = 260 ft
Slope = 0.02 ft/ft
Initial Flow Time = 3.2 min Equation RO-3
Overland Flow N/A
Total Time of Concentration = 3.2 min Equation RO-2
(Therefore, Use Minimum of 10.0 min Per 2.4.4
3 Hydrologic Soil Group—Weld County,Colorado, Northern Part14
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Meters
- Map Scale:1:3,230 if printed on A portrait(8.5"x 11")sheet.
$ N $
0 45 90 160 270
Feet
0 150 300
8/712013
600 900
Map projection:Web Mercator Corner coordinates:WGS84 Edge tics:UTM Zone 13N WGS64
USDA Natural Resources Web Soil Survey
a Conservation Service National Cooperative Soil Survey Page 1 of 4
Hydrologic Soil Group—Weld County,Colorado, Northern Part
MAP LEGEND MAP INFORMATION
Area of Interest(AOl) O C The soil surveys that comprise your AOI were mapped at 1:24,000.
Area of Interest(AOl) O C/D
Warning: Soil Map may not be valid at this scale.
Soils D
Soil Rating Polygons O Enlargement of maps beyond the scale of mapping can cause
A p Not rated or not available misunderstanding of the detail of mapping and accuracy of soil line
placement.The maps do not show the small areas of contrasting
n ND Water Features soils that could have been shown at a more detailed scale.
Streams and Canals
B Please rely on the bar scale on each map sheet for
Transportation map
n B/D measurements.
4-1-4 Rails
C ,v Interstate Highways Source of Map: Natural Resources Conservation Service
n Web Soil Survey URL: http://websoilsurvey.nrcs.usda.gov
C/D
US Routes Coordinate System: Web Mercator(EPSG:3857)
D Major Roads Maps from the Web Soil Survey are based on the Web Mercator
n Not rated or not available Local Roads projection,which preserves direction and shape but distorts
distance and area.A projection that preserves area,such as the
Soil Rating Lines Background Albers equal-area conic projection,should be used if more accurate
' ' A I. Aerial Photography calculations of distance or area are required.
^o' ND This product is generated from the USDA-NRCS certified data as of
• B the version date(s)listed below.
B/D Soil Survey Area: Weld County, Colorado, Northern Part
Survey Area Data: Version 8,Apr 30,2009
. . C
Soil map units are labeled(as space allows)for map scales 1:50,000
. • C/D or larger.
• ' D Date(s)aerial images were photographed: Apr 22,2011—Oct 19,
• . Not rated or not available 2011
Soil Rating Points The orthophoto or other base map on which the soil lines were
O A compiled and digitized probably differs from the background
imagery displayed on these maps.As a result,some minor shifting
▪ ND of map unit boundaries may be evident.
O B
• B/D
USDA Natural Resources Web Soil Survey 8/7/2013
Conservation Service National Cooperative Soil Survey Page 2 of 4
Hydrologic Soil Group—Weld County,Colorado, Northern Part
Hydrologic Soil Group
Hydrologic Soil Group—Summary by Map Unit—Weld County,Colorado,Northern Part(CO617)
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
4 Ascalon fine sandy loam, B 8.4 19.3%
0 to 6 percent slopes
44 Olney fine sandy loam,0 B 16.6 38.3%
to 6 percent slopes
63 Tassel loamy fine sand,5 D 18.4 42.4%
to 20 percent slopes
Totals for Area of Interest 43.5 100.0%
Description
Hydrologic soil groups are based on estimates of runoff potential. Soils are
assigned to one of four groups according to the rate of water infiltration when the
soils are not protected by vegetation, are thoroughly wet, and receive precipitation
from long-duration storms.
The soils in the United States are assigned to four groups (A, B, C, and D) and
three dual classes (ND, B/D, and C/D). The groups are defined as follows:
Group A. Soils having a high infiltration rate (low runoff potential)when thoroughly
wet. These consist mainly of deep, well drained to excessively drained sands or
gravelly sands. These soils have a high rate of water transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These
consist chiefly of moderately deep or deep, moderately well drained or well drained
soils that have moderately fine texture to moderately coarse texture. These soils
have a moderate rate of water transmission.
Group C. Soils having a slow infiltration rate when thoroughly wet. These consist
chiefly of soils having a layer that impedes the downward movement of water or
soils of moderately fine texture or fine texture.These soils have a slow rate of water
transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential)when
thoroughly wet. These consist chiefly of clays that have a high shrink-swell
potential, soils that have a high water table, soils that have a claypan or clay layer
at or near the surface, and soils that are shallow over nearly impervious material.
These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is
for drained areas and the second is for undrained areas. Only the soils that in their
natural condition are in group D are assigned to dual classes.
USDA Natural Resources Web Soil Survey 8/7/2013
a Conservation Service National Cooperative Soil Survey Page 3 of 4
DETENTION VOLUME BY THE MODIFIED FAA METHOD
Project:Weitzel Sec 33 Water Facility
Basin ID:
(For catchments less than 160 acres only. For larger catchments,use hydragraph routing method)
(NOTE'.for catchments larger than 90 acres.CUH P hyclrograph and routing are recommended)
Determination of MINOR Detention Volume Using Modified FAA Method Determination of MAJOR Detention Volume Using Modified FAA Method
Design Information(Input): Design Information(Input):
Catchment Drainage Imperviousness 1v= 100.00 percent Catehmenl Drainage Imperviousness I.H 10000 percent
Catchment Drainage Area A= 1731 Catchment Drainage A A= 1731
P,edeselopment NRC09ol Group Type- B A,BS erC.or Pre4evelOpment NRC550l Group Type- B A.BSG.oeD
Rehr Period for Detention Control T= 100 years(2,5,10.25.50,or 100) Return Period for Detention Control T= 100 IVee5 R 5.10,25,50.or 1001
Time el Con of Watershed T6= 10 minutes Time of Concentration el Watershed Tc= 10 circles
Allowable Unit Release Rate g= 000 crehae Allowable Una Release Rate 5= 000 clsianre
One-hour Precipitation P.= 280 inches One-hour Preclp,lalon H= 200 inches
Design Rainfall OF Formula i eCC Pr11CreTJeCs Design Rain/811'0F Formula i-C.'Prl(CtwT,IeCd
Coefficient One C,= 28.50 Coefficient One C,= 2650
Coefficient Two C= 10 Coefficient Two Cn= 10
coefficient Three C3= 0.789 Coefficient Three Cs= 0709
Determination of Average Outflow from the Basin(Calculated.: Determination of Average Outflow from the Basin(Calculated):
Runoff Coefficient C= 096 Runoff Coelbpenl C= 096
Inflow Peak Runoff Op-in- 1208 cls Inflow Peak Runoff Opin= 1248 cis
Allowable Peak Outflow Rate Opoul= 0.00 cfs Allowable Peek Outflow Rate Op-out= 0.00 cis
Mod.FAA M leer Storage Volume= 26033 cubic feel Mod.FAA Major Storage Volume= 26033 cubic feet
Mod.FAA Minor Storage Volume= 0.596 acre-ft Mod.FAA Major Storage Volume 0.598 acre-ft
5
Rainfall Rainfall� Inflow Adjustment rAverage Outflow Storage Rainfall Rainfall Inflow Adjustment Average Outflow Storage
Duration Intensity Volume Factor Outflow Volume Volume Duration mlenegy Volume Factor Outflow Volume volume
minutes inches/1r acre-feet eet cle acre-feet a a
re-feel minutes inches;hr re-feel d a acre-feel acre-feet
iv i.-, (output) (output) tnutpu0 (output) (output) tnatpu0 (input) (outp(output) tnatpu0 (output) (output) tnutpu0 (output)
10 751 0.172 100 000 0.000 0.172 10 7.51 0.172 100 000 0000 0172
15 630 0216 003 000 0.000 0216 15 6.30 0216 083 000 0000 0216
30 5.45 0250 075 0.00 0000 0250 20 565 0250 0.75 000 0000 0.250
25 483 0.276 070 000 0.000 0276 25 4.83 0276 070 0.00 0000 0276
30 434 0298 067 000 0.000 0.296 30 434 0296 007 000 0000 0290
35 396 0317 064 0.00 0000 0317 35 396 0317 0.60 000 0000 0.317
40 364 0.334 063 000 0.000 0334 ac 364 0334 063 0.00 0000 0334
45 338 0.348 061 000 0.000 0346 a5 3.30 0346 061 000 0000 0340
50 3.16 0361 060 000 0000 0361 50 316 0361 060 000 0000 0561
55 296 0.373 059 000 0.000 0373 55 296 0373 059 0.00 0000 0373
60 279 0.304 058 000 0.000 0384 60 279 0384 056 000 0000 0364
65 2.65 0394 058 0.00 0000 0394 65 265 0394 058 000 0000 0594
70 251 0403 057 000 0.000 0403 70 2.51 0403 057 0.00 0000 0403
75 200 0412 057 000 0000 0412 75 240 0412 057 000 0000 0412
60 2.29 0020 056 0.00 0000 0420 80 229 0420 056 000 0000 0.420
35 2 20 0.427 056 000 0.000 0427 85 2.20 0427 056 0.00 0000 0427
90 2.11 0434 056 000 0000 0434 90 211 0434 056 000 0000 0434
95 2.03 0041 055 0.00 0000 0441 95 203 0441 055 000 0000 0.401
100 196 04d8 055 000 0.000 0443 100 195 0443 055 0.00 0000 0446
ms 189 0454 055 000 0000 0454 105 1.89 0454 055 000 0000 0054
110 1.83 0O60 055 0.00 0000 0460 110 183 0460 055 000 0000 0.460
115 177 0665 054 000 0.000 0465 ns 1.77 0465 054 0.00 0000 0465
120 171 0471 054 000 0000 0471 120 171 0471 054 000 0000 0071
125 166 0076 054 0.00 0000 0476 125 106 0476 050 000 0000 0.476
130 162 0661 054 000 0.000 oa31 130 1.62 0431 054 0.00 0000 0 481
135 157 0406 054 000 0.000 0486 135 157 0486 054 000 0000 0006
140 153 0091 054 0.00 0000 0491 140 153 0491 050 000 0000 0491
145 149 0495 053 000 0.000 0495 145 149 0495 053 0.00 0000 0495
150 146 0500 053 000 0.000 0500 150 146 0500 053 000 0000 0500
155 1.42 0504 053 0.00 0000 0500 155 102 0500 053 000 0000 0504
160 139 0.503 053 000 0.000 0503 160 1.39 0503 053 0.00 0000 0506
165 136 0512 053 000 0000 0512 165 1.36 Os2 053 000 0000 0512
170 153 0516 053 0.00 0000 0516 170 133 0516 053 000 0000 0516
175 130 0.520 053 000 0.000 0520 175 1.30 0520 053 0.00 0000 0520
100 127 0524 053 000 0000 0524 180 127 0524 053 000 0000 0524
105 1.24 0527 053 0.00 0000 0527 185 124 0527 053 000 0000 0527
190 122 0.531 053 000 0.000 0531 190 1.22 0531 053 0.00 0000 0531
195 120 0534 053 000 0000 0534 195 120 0534 053 000 0000 0534
200 117 0538 053 0.00 0000 0538 200 1 17 0538 053 000 0000 0530
205 115 0.541 052 000 0.000 0541 205 1.15 0541 052 0.00 0000 0541
210 113 0544 052 000 0000 0544 210 1.13 0544 052 000 0000 0544
215 111 0547 052 0.00 0000 0547 215 111 0547 052 000 0000 0507
220 109 0.550 052 000 0.000 0550 220 1.9 0550 052 0.00 0000 0550
225 107 0553 052 000 0000 0553 225 107 0553 052 000 0000 0553
230 1.06 0556 052 0.00 0000 0556 230 186 0556 052 000 0000 0556
235 104 0.559 052 000 0.000 0559 235 1.04 0559 052 0.00 0000 0550
240 102 0562 052 000 0000 0562 240 102 0562 052 000 0000 0562
245 1.01 0565 052 0.00 0000 0565 245 181 0565 052 000 0000 0565
250 099 0.563 052 000 0.000 0563 250 099 0563 052 0.00 0000 0566
255 090 0570 052 000 0000 0570 255 090 0570 052 000 0000 0570
260 0.96 0573 052 0.00 0000 0573 260 096 0573 052 000 0000 0573
265 095 0.576 052 000 0.000 0576 265 095 0576 052 0.00 0000 0576
270 094 0578 052 000 0000 0578 270 094 0578 052 000 0000 0570
275 0.92 0581 052 0.00 0000 0581 275 092 0581 052 000 0000 0581
260 091 0.583 052 000 0.000 0583 230 091 0583 052 0.00 0000 0 583
205 090 0506 052 000 0000 0586 285 090 0586 052 000 0000 0506
290 009 0588 052 0.00 0000 0588 290 089 0588 052 000 0000 0580
295 037 0.591 052 000 0.000 0591 295 0.37 0591 052 0.00 0000 0591
300 086 0593 052 000 0.000 0593 300 0.06 0593 052 000 0000 0593
305 0.85 0595 052 0.00 0000 0595 305 085 0595 052 000 0000 0595
310 034 0.593 052 000 0.000 0598 310 0.84 0598 052 0.00 0000 0590
Mod.FAA Minor Storage.Volume(cubic ll.)- 29033 Mod.FAA Major Storage Volume(cubic 9.)= 28,033
Mod.FAA M leer Storage Volume(acre-ft)= 0.5970 Mod.FAA Major Storage Volume(acre-ft.). 05076
UDFCD DETENTION BASIN VOLUME ESTIMATING WORKBOOK Version 2.32,Released March 2013
UD-Detention v232 xs modified FAA 61812013,11 26 AM
Weir Report
Hydraflow Express Extension for AutoCAD®Civil 3D®2012 by Autodesk, Inc. Thursday,Aug 8 2013
Emergency Spillway
Trapezoidal Weir Highlighted
Crest = Sharp Depth (ft) = 0.25
Bottom Length (ft) = 40.00 Q (cfs) = 12.48
Total Depth (ft) = 0.50 Area (sgft) = 10.25
Side Slope (z:1) = 4.00 Velocity (ft/s) = 1.22
Broad Crested Weir I Top Width (ft) = 42.00
Calculations
Weir Coeff. Cw = 2.60
Compute by: Known Q
Known Q (cfs) = 12.48
Depth (ft) Emergency Spillway Depth (ft)
1.00 1.00
0.50 0.50
v
0.00 0.00
-0.50 -0.50
0 5 10 15 20 25 30 35 40 45 50 55
Weir W.S. Length (ft)
en I I
oo
019 020 Ce U 021 022 023 024 019 020 071 022 023 024 9 020 021 122
STATE HIGHWAY 1014C
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LAMP RYNEARSON Water Loadout Facility
& ASSOCIATES
ENGINEERS I SURVEYORS I PLANNERS Typical Traffic Patterns 0 0.5 ' 2 Miles
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