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Articles 1 - 14 of 14
Full-Text Articles in Engineering
Setback Distance Requirements For Removal Of Swine Slurry Constituents In Runoff, John E. Gilley, Shannon L. Bartelt-Hunt, Kent M. Eskridge, Xu Li, Amy M. Schmidt, Daniel D. Snow
Setback Distance Requirements For Removal Of Swine Slurry Constituents In Runoff, John E. Gilley, Shannon L. Bartelt-Hunt, Kent M. Eskridge, Xu Li, Amy M. Schmidt, Daniel D. Snow
Department of Biological Systems Engineering: Papers and Publications
The use of setback distances for manure application on cropland areas adjacent to surface water bodies could serve a function similar to vegetative filter strips. However, little information currently exists to identify the setback distances necessary to effectively reduce the transport of contaminants in runoff. The objective of this study was to determine the effects of setback distance and runoff rate on concentrations of selected constituents in runoff following land application of swine slurry to a no-till cropland area in southeast Nebraska. The study site had a residue cover of 7.73 Mg ha-1 and a slope gradient of 4.9%. The …
Constructing Slow Sand Filters: Engineering Students’ Experiences In San José De Playón, Bolívar, Colombia, Sol Park, Sanyukta Gokhale, Kaylyn Colinco
Constructing Slow Sand Filters: Engineering Students’ Experiences In San José De Playón, Bolívar, Colombia, Sol Park, Sanyukta Gokhale, Kaylyn Colinco
Purdue Journal of Service-Learning and International Engagement
Sol Park, Sanyukta Gokhale, and Kaylyn Colinco were members of a Global Design Team (GDT) involved in providing innovative solutions to drinking water treatment in rural areas of developing countries. The immediate goal of the GDT in May 2016 was to deliver large slow sand filters (SSFs) to a rural school in Colombia. The experience placed the students in a small town 80 km (~50 miles) south of Cartagena, Colombia, called San José de Playón. The town pumps water from the Arroyo Reservoir, which is then consumed by the citizens and students at the local school (the only one in …
Removal Of Nitrates From Stormwater Using Nanoclays, Rubia Siddiqi
Removal Of Nitrates From Stormwater Using Nanoclays, Rubia Siddiqi
Master's Theses
Creeks and rivers are often polluted as a result of stormwater runoff that carries various contaminants in to open water bodies, causing adverse environmental and health effects. Low impact development (LID) techniques are currently employed to treat this runoff prior to discharge. Nitrate, however, is not consistently removed by these LID techniques. This study analyzed the ability of several nanoclays to remove nitrate in runoff and determined the feasibility of using them as a soil supplement for LID implementation. Six different nanoclays and HCl-treated clays were compared (pre-modified trimethyl stearyl ammonium nanoclay, pre-modified dimethyl dialkyl amine nanoclay, unmodified hydrophilic bentonite, …
2015, November - Salinas River Salt Modeling Report , Tetra Tech For California Central Coast Regional Water Quality Control Board And Us Environmental Protection Agency, Region Ix
State and Federal Documents Relating to Monterey and San Luis Obispo Counties
Report prepared by Tetra Tech on behalf of California Central Coast Regional Water Quality Control Board and US Environmental Protection Agency, Region IX with a view of development of salt-related TMDLs and a salt and nutrient management plan for the Salinas Valley aquifers. The report provides data analysis and a literature review, development of a water and salt mass balance tool, and salt sources assessment. Recommendations regarding improved representation of cropland locations, rotations, and irrigation practices are provided.
2012, May - San Luis Obispo County Master Water Report, Volume Iii Of Iii
2012, May - San Luis Obispo County Master Water Report, Volume Iii Of Iii
San Luis Obispo Public Works Water Reports
A compilation of current and future water resource management activities with in San Luis Obispo County that are organized by Water Planning Areas. The report explores how the activities interrelate, analyzes current and future supplies and demands, and identifies future water management strategies and ways to optimize existing strategies
2013-2014, August - Integrated Regional Water Management Plan For The Greater Monterey County Region
2013-2014, August - Integrated Regional Water Management Plan For The Greater Monterey County Region
Miscellaneous Monterey and San Luis Obispo County Documents and Reports
An Integrated Regional Water Management Plan (IRWM Plan) developed by 18 member entities that include government agencies, nonprofit organizations, educational organizations, water service districts, private water companies, and organizations representing agricultural, environmental, and community interests. The IRWM Plan is an expansion and modification of a previous plan – the May 2006 Salinas Valley Integrated Regional Water Management Functionally Equivalent Plan developed by Monterey County Water Resources Agency. While the traditional approach to water resource management has typically involved separate and distinct agencies managing different aspects of the water system, i.e., water supply, water quality, flood management, and natural resources, integrated …
Use Of A Onedimensional Link-Node Model To Develop Total Maximum Daily Load Strategies For The San Joaquin River Estuary, Mary K. Camarillo, William T. Stringfellow, Joel Herr, Scott Sheeder, Gregory Weissmann, Shelly Gulati, Ashley Stubblefield
Use Of A Onedimensional Link-Node Model To Develop Total Maximum Daily Load Strategies For The San Joaquin River Estuary, Mary K. Camarillo, William T. Stringfellow, Joel Herr, Scott Sheeder, Gregory Weissmann, Shelly Gulati, Ashley Stubblefield
Shelly Gulati
A one-dimensional link-node model was used to simulate water quality conditions in the tidallyinfluenced, deep water ship channel (DWSC) of the San Joaquin River located in Central California. The DWSC has been plagued with low dissolved oxygen (DO) conditions for decades and is currently a focus of restoration efforts. The model was calibrated using a six-year flow and water quality data set. Model simulations were run by removing the mass loads of each of the following major sources of oxygen depletion to determine the effects: elimination of the deepened ship channel (i.e., restore to its preexisting depth), elimination of import …
Use Of The Warmf Model To Identify Sources Of Oxygen Impairment And Potential Management Strategies For The San Joaquin River Watershed, William T. Stringfellow, Joel Herr, Scott Sheeder, Shelly Gulati, Gregory Weissmann, Mary K. Camarillo, Michael Jue
Use Of The Warmf Model To Identify Sources Of Oxygen Impairment And Potential Management Strategies For The San Joaquin River Watershed, William T. Stringfellow, Joel Herr, Scott Sheeder, Shelly Gulati, Gregory Weissmann, Mary K. Camarillo, Michael Jue
Shelly Gulati
Eutrophication of the San Joaquin River (SJR) has resulted in low dissolved oxygen (DO) conditions, which has led to a regulatory response and development of total maximum daily load (TMDL) allocations. Due to the dynamic nature of processes governing oxygen depletion in the SJR, a model was needed to help stakeholders understand the fate and transport of nutrients and oxygendemanding substances that cause the low DO conditions. Here, the Watershed Analysis Risk Management Framework (WARMF) model was used to simulate nutrient removal and control strategies, accounting for the secondary effects of growth and transformation between sources and discharge. Using the …
Impact Of Transportation Infrastructure On Stream Water Quality: Contribution From Stormwater Runoff, Andrew James Steinman
Impact Of Transportation Infrastructure On Stream Water Quality: Contribution From Stormwater Runoff, Andrew James Steinman
Masters Theses
Stormwater runoff is a vital concern to the health of natural waterbodies and ecosystems within urban watersheds. While there is already ample research dedicated to understanding water quality from urban roadways, few of those studies have focused on measuring the dynamics of how stream water quality during storm conditions changes due to increased pollutant load from major urban roadways. With the goal to develop effective water resource management strategies for an impaired tributary watershed, water quality was monitored at four locations within a subwatershed to determine what impact pavement runoff of a major interstate has on the impaired receiving stream. …
2012, May - San Luis Obispo County Master Water Report, Volume I Of Iii
2012, May - San Luis Obispo County Master Water Report, Volume I Of Iii
San Luis Obispo Public Works Water Reports
A compilation of current and future water resource management activities with in San Luis Obispo County that are organized by Water Planning Areas. The report explores how the activities interrelate, analyzes current and future supplies and demands, and identifies future water management strategies and ways to optimize existing strategies.
2012, May - San Luis Obispo County Master Water Report, Volume Ii Of Iii
2012, May - San Luis Obispo County Master Water Report, Volume Ii Of Iii
San Luis Obispo Public Works Water Reports
A compilation of current and future water resource management activities with in San Luis Obispo County that are organized by Water Planning Areas. The report explores how the activities interrelate, analyzes current and future supplies and demands, and identifies future water management strategies and ways to optimize existing strategies.
Evaluation Of Woodchip Bioreactors And Phosphorus Adsorption Media For Nutrient Removal From Subsurface Drainage Water, Utsav Thapa
Electronic Theses and Dissertations
Increased subsurface drainage over the past few decades in eastern South Dakota contributed to agricultural water quality problems. Nutrient losses, primarily nitrate-N and dissolved P, from subsurface drainage, have been identified as major contributors to eutrophication in the Great Lakes and Gulf of Mexico. Denitrifying bioreactors and P adsorption structures are edge-of field practices that can be used to protect water quality in waters downstream of subsurface drainage systems. The objectives of this study were to evaluate the effectiveness of woodchip bioreactors and a P adsorption structure in removing nitrate-N and dissolved P from subsurface drainage water. Four woodchip bioreactors …
Quantifying Effectiveness Of Streambank Stabilization Practices On Cedar River, Nebraska, Naisargi N. Dave, Aaron R. Mittelstet
Quantifying Effectiveness Of Streambank Stabilization Practices On Cedar River, Nebraska, Naisargi N. Dave, Aaron R. Mittelstet
Department of Civil and Environmental Engineering: Faculty Publications
Excessive sediment is a major pollutant to surface waters worldwide. In some watersheds, streambanks are a significant source of this sediment, leading to the expenditure of billions of dollars in stabilization projects. Although costly streambank stabilization projects have been implemented worldwide, long-term monitoring to quantify their success is lacking. There is a critical need to document the long-term success of streambank restoration projects. The objectives of this research were to (1) quantify streambank retreat before and after the stabilization of 18 streambanks on the Cedar River in North Central Nebraska, USA; (2) assess the impact of a large flood event; …
Runoff Water Quality Characteristics Following Swine Slurry Application Under Broadcast And Injected Conditions, Nicole R. Schuster, Shannon L. Bartelt-Hunt, Lisa M. Durso, John E. Gilley, Xu Li, David B. Marx, Amy M. Schmidt, Daniel D. Snow
Runoff Water Quality Characteristics Following Swine Slurry Application Under Broadcast And Injected Conditions, Nicole R. Schuster, Shannon L. Bartelt-Hunt, Lisa M. Durso, John E. Gilley, Xu Li, David B. Marx, Amy M. Schmidt, Daniel D. Snow
Department of Biological Systems Engineering: Papers and Publications
This study was conducted to measure the effects of swine slurry application method, time following slurry application, and runoff rate on selected water quality characteristics. Slurry from a commercial swine operation was broadcast or injected on field plots at a rate required to meet annual nitrogen requirements for corn. Rainfall simulation tests were conducted at five varying periods following slurry application. During each study period, three simulated rainfall events, separated by 24 h intervals, were applied for 30 min duration at an intensity of approximately 70 mm h-1. Following the third rainfall simulation event, inflow was applied at …