Transcript Document

Feed Lot Run Off!!!
UNL Environmental Engineering Lesson
July 2007
Marie Nielsen
College of Engineering
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Special Programs & Units Faculty
Architectural Engineering
Directory:
Biological Systems Engineering
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Environmental Engineering**
Chemical and Biomolecular Engineering
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Mid-America Transportation
Civil Engineering
Center**
Computer Science & Engineering
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Midwest Roadside Safety
Computer & Electronics Engineering
Facility
Construction Management
Construction Systems
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Six Sigma
Electrical Engineering
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Study Abroad**
Engineering Mechanics
Industrial & Management Systems
Engineering
Mechanical Engineering
* = Omaha Campus
** = Omaha & Lincoln Campuses
Environmental Engineering
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Slide Show
http://www.sos.state.ne.us/business/regsearch/Rules/Environmental_Quality_Dept_of/Title-198/Appendix-A.pdf
Runoff settling basin and
holding pond
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Manure is
scraped
periodically from
feedlots and
spread on
croplands
Good
management
practices
decrease risk of
contaminating
water supplies
http://www.ces.purdue.edu/extmedia/WQ/WQ-7.html
Proper Storage
of Liquid waste
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http://www.state.sd.us/denr/DES/Ground/AWMS/AWMS.htm
Can be used as a
viable fertilizer
Reduces chance of
surface and ground
water
contamination
Meets regulations
Pen USDA Research Project
Effects of Pond Ash as a Feedlot
Pen Surface and Animal StressLevel on the Prevalence, Levels,
and …
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Project Number: 5438-32000-026-03
Project Type: Trust
Start Date: May 01, 2006
End Date: Apr 30, 2008
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http://www.ars.usda.gov/research/projects/projects.htm?ACCN_NO=410515
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Table of Runoff Curve Numbers (SCS, 1986)
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http://www.lmnoeng.com/Hydrology/hydrology.htm
Calculating Rainwater
peak Runoff
Rational Method
 The formula is: Q=CiA
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Q = peak runoff rate (cfs)
I = is rainfall intensity
(in/hr)
A = drainage area (acres)
C is runoff coefficient
(Activity 4.5.3A)
http://webmail.nicolet.k12.wi.us/~Jason_Huber/FOV2-00014049/FOV2-00019020/FOV2-0001903C/Rainwater%20Runoff.pdf?FCItemID=S008265FE
Water run off in the
community
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http://edweb.sdsu.edu/sciencetg/elemen
tary/pond/pond4.html
(Area of Pavement & Buildings)
____________________________ X 100% = % of rain lost to run off
(Area of entire playground)
Heavy Rains Drench G.I.
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Heavy rains drench G.I.
Rainfall early Sunday
brought 5.07 inches of
water
Grand Island had flooded:
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parking lots
streets
low-lying areas
Maxed out
G.I. rain detention cell
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http://www.flickr.com/photos/candleshoe/941130784/
Foreground is
Lawrence Lane
Behind is maxed
out rain
detention cell
Far back is
spillage on to
State Street in
front of
McDonalds
occurred
Nebraska
Weather
and
Climate
Page
Image © Mike Hollingshead.
Saturday evening, September 16, 2006. Lightning over Omaha.
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http://www.hprcc.unl.edu/nebraska/
Calculating Storm Water
Run-on @ Construction Sites
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Run-on
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water that comes
from off-site
locations
drains onto
construction site
Q - run-on flow (m3 /sec)
C - run-off coefficient for drainage area (%)
i - rainfall intensity (mm/hour)
A - area draining onto the site (km2 )
http://www.dot.ca.gov/hq/env/stormwater/publicat/const/Dec_2000.pdf
Teach engineering
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Resources for K-12 Students
http://www.free.ed.gov/resource.cfm?resource_id=1629&subject_id=43
http://www.engineeringpathway.com/ep/
http://www.teachengineering.org/view_activity.php?url=http://www.teachengineeri
ng.com/collection/cub_/activities/cub_air/cub_air_lesson03_activity2.xml