-M.S. (Civil Engineering/Sanitary Engineering) University of Colorado, 1983
-B.S. (Agricultural Engineering) Colorado State University, 1978
-Post M.S. University of Toledo, 1987, Industrial Wastewater Pretreatment

Prior Experience

Landfill Design and Permitting Projects

• Design, permitting and construction engineering for the Salt River Landfill owned by the Salt River Pima-Maricopa Indian Community. Mr. Smith was responsible for the design of Cells 4b and 5 including the leachate collection and landfill gas systems. In addition, he was responsible for the design of Cell 6, which is a 35 acre bioreactor cell. The below-grade excavated slopes were designed at a 2:1 slope with approximately 100 vertical feet of excavation. This required extensive analysis of slope stability issues in the design of an alternate liner system. A leachate collection system, leachate recirculation system, storm water detention system, the use of additional water sources such as liquid waste, WWTP effluent and groundwater in the bioreactor, and a combined system of landfill gas collection methods were incorporated into the design of the bioreactor. Mr. Smith was responsible for preparing the Research, Development and Demonstration (RD&D) permit application that has been submitted to USEPA, Region 9 for review and approval. The RD&D application included adding leachate recirculation/bioreactor technology into the existing 5 cells at the landfill and modifying the existing facility to accommodate the technology.

• Evaluation of end point stabilization and post closure care plan for the Congress Landfill Aerobic Bioreactor in Tucson, Arizona. Mr. Smith is responsible for evaluating data collected during the operation of this aerobic bioreactor, developing a work plan for the testing and analytical procedures to be used to determine the stabilization end point, and conducting the field work in accordance with the work plan.

• Design, permitting, construction engineering, and construction certification for Pima County Tangerine Road Regional Landfill, north of Tucson, Arizona, Sahuarita Landfill in Sahuarita, Arizona, Chandler Landfill in Chandler, Arizona, Patagonia Landfill in Patagonia, Arizona, Rio Rico Landfill in Santa Cruz County, Arizona, City of Page, Arizona, Hopi Community Landfill in Arizona, City of Winslow, Arizona, Cochise County Eastern Regional Landfill Facility in Arizona, and City of Laredo Landfill in Laredo, Texas.

• Design, permitting, construction engineering, and construction management and certification for the Austin Community Landfill in Austin, Texas, Covel Gardens Landfill in San Antonio, Texas, Comal County Landfill, near San Antonio, Texas, Pecan Prairie Landfill in north Texas, Butterfield Station Landfill in Mobile, Arizona, Ironwood Landfill in Adamsville, Arizona, Northwest Regional Landfill in Surprise, Arizona and the Gray Wolf Landfill near Prescott, Arizona for Waste Management.

• Design, permitting, construction engineering, and construction management and certification for the Southwest Regional Landfill Facility, Buckeye, Arizona and Apache Junction Landfill in Apache Junction, Arizona for Allied Waste.

• Served as the Project Director, Project Manager and Technical Advisor for the design of a municipal golf course as the land-use selected for a closed solid waste landfill located in Phoenix, Arizona. The project involved determining the environmental feasibility, evaluating infiltration potential, establishing irrigation requirements, and determining irrigation system design requirements such as computer control systems capable of integrating a site climate station, soil moisture sensors, irrigation control, and sensors for pipeline breaks.

• Served as the Project Director and Project Manager for the Sunrise Mountain Landfill project in Las Vegas, NV. This project involves an 800-acre municipal solid waste landfill that is under two Administrative Orders from USEPA, Region 9. One order is under RCRA and the other is under the CWA. Issues involve veneer slope stability; global slope stability; erosion assessment and control; assessment of final cover and development of alternative final cover designs; assessment of native vegetation; evaluation of over 100 BMP’s for storm water and erosion control; implementing and tracking over 30 BMP’s that were established as interim measures; and design and construction of several major storm water control features. The geohydrological investigation involved the drilling and completion of over 40 groundwater monitoring wells ranging in depth from 60 feet to over 1,200 feet. Many wells had multiple completions as different ground water aquifers were encountered at varying depths. Mr. Smith developed the standard operating procedures for collection and reporting of all data for the project. All of the work performed for this project required extensive review and approval from USEPA, Region 9 and the Bureau of Land Management.

• Mr. Smith was a Technical Advisor to the City of Phoenix on the Rio Salado Restoration project. SCS performed all of the site assessments along the Salt River (Rio Salado). From these site assessments, numerous landfills were located within the project boundaries. Mr. Smith provided technical input to the Corps of Engineers for the design of the low flow and flood channels through the various landfills located within the project. Specifications were developed to account for slopes of channels cut through trash areas to insure veneer slope stability, erosion, and scour control. During the first phase of the project approximately 100,000 cubic yards of solid waste required removal. Mr. Smith prepared documents to obtain permits for the stockpiling and processing of the solid waste/soil material. Approximately, 65 percent of the solid waste material was soil and was separated from the waste using shaker screens. The reclaimed soil was analyzed for waste properties. A report was submitted to and reviewed by ADEQ; who approved the soil for unrestricted beneficial use. Soil samples were obtained to evaluate the reclaimed soil for revegetation within the Rio Salado project. The reclaimed soil was used in revegetating disturbed areas within the project. Waste materials from the shaker screen processing were disposed at a local landfill.

• Management of a design/build contract for the installation of a comprehensive landfill gas system for two landfills in Denver, Colorado. This system involved the installation of 42 gas extraction wells, condensate traps, condensate sumps, below-grade HDPE headers, and below-grade HDPE mains on a closed landfill located across the street from the second landfill. The second landfill was operational and the gas system included installation of 17 wells, condensate traps, condensate sumps, above-ground headers, and above-ground mains leading to the blower/flare station, which served both landfills. The blower/flare station consisted of a skid-mounted blower with a firm capacity of 6,000 scfm, a totally enclosed flare rated at 3,000 scfm, condensate sumps and knockouts, condensate storage system, and all flow meters and controls. All design and construction permits were obtained during performance of this contract, including air quality permits for the flare. The project was completed, except for installation of the flare, in less than 8 weeks. Construction certification, operational assistance and training were provided after installation of the flare. Mr. Smith also managed and prepared all of the NSPS documents and Title V air quality permitting documents for this facility.

• Mr. Smith was involved in a project involving the construction and commissioning of a landfill gas control system for the Prudence Road Landfill in Tucson, Arizona. The Prudence Road Landfill operated from 1964 to 1973 and was closed in 1975. The landfill gas control system involved the installation of 13 gas recovery wells, 9 gas monitoring probes, and the installation and start up of a blower. Due to odor concerns at the facility, an innovative/alternative technology involving the use of a biofilter was implemented at the facility. The discharge from the gas control system was introduced into a biofilter consisting of native soils, rock, PVC piping, and a mounded vegetated soil cover.

• Mr. Smith is responsible for the contract operation of landfill gas systems at 5 different landfills in Arizona. This includes the monitoring, maintenance and compliance activities for 3 NSPS sites with Title V permits. Mr. Smith was involved in preparing and negotiating the Title V permits and has obtained permit modifications and variances to several of these operating permits. He also prepares the annual and semiannual reports in accordance with the Title V permits.

• Closure Construction Documents for the Page-Trowbridge Hazardous and Radioactive Waste Landfill for the University of Arizona, Tucson, Arizona. Prepared the site and waste characterization studies, the economic and evaluation report of alternative final cover systems, and performed the structural stability analysis of the final cover system all of which led to the selection of the optimum final cover system. This project involved the full-time CQA monitoring of all construction activities, safety and health plans, and preparation of the construction certification report.

• Closure Construction Documents for the Southwest Disposal Area at the Los Reales Landfill in Tucson, Arizona. Prepared the site and waste characterization studies, the design of the closure system for the industrial waste landfill including clean closure for a portion and the use of an alternative final cover for the remaining portion, and developed the remediation action plan for submittal and approval by ADEQ.

• Management of the closure of an older landfill for Sun Lakes, Arizona. Sun Lakes had constructed an unlined trench landfill in 1983 and had operated the facility for several years. Over the following years, several houses had been built over the landfill. The work on this project involved the removal of waste materials from the private lots and from under the homes. Also included was the construction of a cover system capable of supporting a golf course and the installation of gas monitoring probes.

• Remediation, Design, and Construction Services for the Dona Juana Sanitary Landfill, Santa Fe De Bogotá, Columbia. This landfill had an extensive slope failure causing approximately 2.5 million tons of trash to be deposited a length of about 2 miles down a hill and across a local river. Remediation design included waste removal, constructing three new landfill areas, leachate treatment facilities, and stabilization of the existing fill.

• Technical support for landfill closure projects in Seoul, Korea; Bogotá, Columbia; Auckland, New Zealand; and more than 10 sites in Arizona. Investigation activities included installation and sampling of nested groundwater wells, nested soil vapor wells, groundwater modeling, risk assessment screening, percolation testing, and soil sampling. Designs for these facilities have included groundwater pump and treat systems, leachate collection and treatment facilities, gas control and beneficial use systems, slope stability analysis, the use of over 20 different materials in the final design of cover systems. Designs also included provisions for handling medical wastes, drums and industrial materials, excessive liquids, subsidence and settling, contractor’s work plans, contingency plans, and safety and health plans.

Landfill Operations and Audits

• Mr. Smith performed an operational assessment and audit of the Miramar Landfill operated by the City of San Diego, Environmental Services Department under a lease from the U.S. Department of Navy. The California Integrated Waste Management Board, City of San Diego Solid Waste Lead Enforcement Agency, the California Regional Water Quality Control Board, San Diego Region, and the San Diego County Air Pollution Control District regulate this facility. The Miramar Landfill consists of the Miramar Greenery, the Native Plant Nursery, a Household Hazardous Materials Storage Facility, a C&D Recycling Facility and a main operations area. The Miramar Landfill is the only landfill to be ISO 14001 certified. The operational assessment included evaluation of existing equipment, operator training, compliance issues with respect to daily cover, evaluation of storm water and erosion control facilities, evaluation of the Miramar Greenery operations and an evaluation of the fee booth operations. Recommendations were made to update the SWPPP and SPCC plans, to change the type of equipment used at the working face, to develop a fill sequencing plan and provide a training program for operators and laborers. Additional recommendations were made to retrofit existing equipment at the Miramar Greenery to accommodate succulents and palm debris, change the type of equipment used for colorization of wood chips, optimize traffic patterns in the facility. Fee booth recommendations included changing the signage to facilitate use of the facility and installing camcorders at the fee booths to record transactions and vehicle information.

• Mr. Smith performed an operational assessment of the Cherry Island Landfill owned by the Delaware Solid Waste Authority. The Department of Natural Resources and Environmental Control regulates this facility. The facility has a contract operator for both its landfill operations and landfill gas to energy system. The operational assessment included evaluation of existing equipment, operator training, compliance issues with respect to landfill operations such as daily cover, an evaluation of daily cover use and the minimization of odors, evaluation of storm water and erosion control facilities, evaluation of the landfill gas system to mitigate odors, and an evaluation of the existing leachate collection system. Recommendations were made to increase the density of landfill gas extraction wells, to better optimize control of storm water, to change types of equipment used at the working face, to develop a landfill sequencing plan for daily operations, and to increase survey control during fill operations to insure consistent slopes of at least 5 percent on intermediate decks. All of these recommendations will assist in mitigating the odor complaints at the facility.

• Mr. Smith performed an operational assessment and audit for the Brown Station Road Landfill owned by Prince Georges County, Maryland. The Maryland Department of Environmental Quality regulates this facility. This landfill consists of a MSW landfill, an electronics recycling facility, a household hazardous waste collection facility, a landfill gas compressor station and conveyance pipeline for gas use, a 3 MW power generating plant, a leachate treatment plant, tire storage and shipping area, green waste operation, a citizen drop-off area and recycling facility. Issues identified include daily cover, treatment and discharge limitations, planning and fill sequencing, storm water control, storm water pollution, spill prevention, training and record keeping issues, and OSHA safety concerns. Recommendations were made to better optimize citizen traffic, containment of fuel and waste oil containers, fill and sequencing plans to better optimize equipment and personnel between all the operations, landfill gas control on a closed portion of the landfill, storm water management practices and facilities, and bringing the facility into compliance with several training, safety and health concerns.

• Mr. Smith performed two operational assessments over an eight month time period for the Battle Creek Landfill in Page County, Virginia. The Virginia DEQ regulates this facility. It is owned by Page County and the County has a contract operator. After receipt of several Notices of Violation, the operational capacity of the landfill was called into question. The operational assessments included evaluation of existing equipment, operator training, compliance issues with respect to landfill operations such as daily cover, exclusion of non-acceptable waste, etc. as well as storm water and erosion control facilities. Recommendations were made to better optimize truck traffic patterns, scale house efficiency, equipment maintenance, and utilization of existing equipment and staff.

• Mr. Smith performed an operational assessment and compliance audit of the Frederick County Landfill in Virginia. This landfill consists of a MSW landfill, a construction debris landfill, leachate treatment plant, tire shredding operation, green waste operation, and a citizen drop-off area and recycling facility. Issues identified include daily cover, treatment and discharge limitations, planning and fill sequencing, storm water control, storm water pollution, spill prevention, scale house operations, and OSHA safety concerns. Recommendations were made to better optimize citizen traffic, containment of fuel and waste oil containers, fill and sequencing plans to better optimize equipment and personnel between the two landfills, landfill gas control on a closed portion of the landfill, updating the scale house software and procedures, storm water management practices and facilities, and bringing the facility into compliance with several safety and health concerns.

• Mr. Smith performed an operational assessment and compliance audit for the collection fleet maintenance facility, five transfer stations, a material recovery facility, a household hazardous waste collection and transfer facility, and a 2,400 acre landfill in Las Vegas, Nevada. The total system handles about 10,300 tons per day of residential, commercial, and industrial waste. Recommendations involved modifications to equipment wash down areas, modifications to pretreatment units for several sewer discharge locations, storm water pollution prevention plans, personnel training, transfer station modifications regarding traffic control, compaction of waste in transfer vehicles, modifications to fleet fueling facilities; and optimization of personnel and equipment.

Landfill Operations Training

• Mr. Smith developed a two-day course entitled “Training Landfill Operating Personnel” and has been the course director for this course seven times. With SWANA assistance, course materials from “Training Sanitary Landfill Operating Personnel” and “Operational Issues for Landfill Managers”, and other resources were combined to develop this course that was taught in New Zealand and Australia. SWANA provided training certification for course participants after successful completion of the course.

• Mr. Smith developed a two-day course entitled “Landfill Operations and Maintenance Workshop” for the International Solid Waste Association (ISWA). This course was taught in Tel Aviv, Israel. Co-sponsors of the workshop included the Israeli Solid Waste Forum and the Ministry of the Environment.

• Mr. Smith has been extremely active in the Arizona Chapter of SWANA. In September of 1998, he presented to the Board of Directors a program to implement SWANA training at chapter meetings on a quarterly basis. The Board approved the program and starting in January 1999, he has been responsible for enactment of the plan. Since 1999, over 20 SWANA training courses have been offered and over 400 operators and managers have received training. The participants have included private sector, public sector, tribal members, and regulatory officials, with many participants coming from out-of-state. Courses have included:

- Training Sanitary Landfill Operating Personnel
- Managing Landfill Gas at MSW Landfills
- Training Landfill Gas System Operating Personnel
- Training Collection Operating Personnel
- Groundwater and Leachate Sampling at MSW Facilities
- Waste Screening at Municipal Solid Waste Management Facilities
- Health & Safety at Municipal Solid Waste Landfills

Solid Waste Facilities Operation

• Division President for Waste Management of Arizona in charge of:

- Operations of the 3,000 ton per day Sky Harbor Transfer Station, the 4,500 ton per day Butterfield Station Landfill, and the 300 ton per day Gray Wolf Landfill.
- The operations at the 27th Avenue Landfill (which received 2,500 tons per day while active), including several hundred cars per day. This landfill was operated under contract to the City of Phoenix.

Responsibilities also included: (a) institution of the employee safety and health training program, (b) all permit compliance activities, (c) data management, (d) permitting, design, and construction of new disposal cells, (e) characterization of the waste, (f) sampling, profiling, and running the waste acceptance program, (g) spill prevention and control plans, and (h) community relations programs.

• As Vice President of E.T. Technologies, Inc., Mr. Smith was responsible for the management of the design, construction, and operations of an industrial waste treatment facility located at the Salt Lake Valley Landfill. He developed the sampling, profiling and waste acceptance program, employee safety and health training programs, testing and application procedures for the use of the treated product in revegetation of closed landfill areas, and the monitoring program for the facility.

• Mr. Smith was an Owner in Franconia Technologies. He was responsible for developing and obtaining all the permits, zoning, etc. to implement an 845-acre rail haul landfill facility in western Arizona. Waste Management, Inc. acquired this facility. Mr. Smith was responsible during the acquisition to satisfy and perfect any and all terms required by the due diligence team.

• Mr. Smith was an Owner of a firm that developed the Arizona Soils Composting Facility in Vicksburg, Arizona. He was responsible for the original siting, real estate transaction, zoning, permitting, public hearings and obtaining the operating permits. Mr. Smith was also responsible for the construction and commissioning of the facility. This facility was an 80-acre windrow composting facility designed with a “double lining” system consisting of structural asphalt, rubberized asphalt with a chip seal, and hydraulic asphalt to provide the working surface. It has a capacity of up to 600 tons per day and composted municipal sewage sludge with a bulking agent consisting of dairy manure, straw, and cotton gin trash. The sewage sludge was rail-hauled from New York City, New York.

Environmental Engineering Projects

• Mr. Smith was responsible for the process design of projects involving sludge treatment and disposal. Composting experience includes Yanbu, Saudi Arabia (co-composting of sewage sludge and solid waste); Sapporo and Akita, Japan (sewage sludge with rice hulls as bulking agent, in-vessel technology); City of Philadelphia, Pennsylvania (400-ton-per day static pile compost); and Metro Denver Sewage Disposal District No. 1, Colorado (aerated windrow technology).

• He participated in sludge management planning for Santa Rosa and Las Virgenes Municipal Water District, California; Henrico County, Virginia; Grand Island and Lincoln, Nebraska; and Greeley, Loveland and Fort Collins, Colorado. He served as a special consultant on planning studies for Gunnison, Colorado, and Midland and Dallas, Texas. The studies involved technical evaluation of sludge treatment equipment and proposed disposal sites, evaluation of potential environmental impacts, cost-effectiveness analyses, and conducting regulatory hearings to obtain the necessary approvals.

• Mr. Smith was responsible for the sludge treatment demonstration projects in Fort Collins, Boulder, and Denver, Colorado; Manhattan and Lawrence, Kansas; Las Virgenes Municipal Water District, California; Dallas and Midland, Texas; Salt Lake City, Utah; Shreveport, Louisiana; Butte, Montana; and for a private client in Morgan City, Louisiana. The project in Morgan City, Louisiana involved the land treatment of offshore drilling fluids. All of these demonstration projects involved test plots for different types of application methods and rates and the monitoring of waste, soil, surface water, groundwater, and plant tissue. All of these demonstration projects were developed into full-scale treatment systems.

• He was the lead designer for the Fort Collins, Colorado sludge management farm consisting of a land application area and a composting facility and was a key participant in sludge disposal designs for Dallas, Texas and Las Virgenes Municipal Water District. Mr. Smith also participated in the design of an effluent reuse system and of a compost demonstration facility for Metro Denver Sewage Disposal District No. 1. He conducted operator-training seminars and wrote Operation and Maintenance manuals for these projects.

• Management of a $1.5 million CERCLA remediation project at an industrial mining/power production site in Kemmerer, WY. Mr. Smith prepared the preliminary assessment surveys, environmental surveys, asbestos and lead surveys, monitoring well survey and installation, site characterization, remedial action plan, safety and health plans, and closure of an existing industrial waste landfill. This work involved the remediation of soil contaminated with PCB’s, pesticides, solvents, waste oil, asbestos, and heavy metals. Portions of the work were conducted within the confines of buildings and required a stringent health and safety monitoring program including monitoring of equipment emissions. OSHA programs such as permitting for confined space entry, permitting for hot work, illumination, and excavation and trenching were also administered. A soil and groundwater remediation system was designed and implemented after receiving approval of the remedial action plan from the State of Wyoming. The site received a clean closure letter of determination after review of the construction documentation report.

• Management of a due diligence contract for the acquisition of a large corporate asphalt company. This project involved performing due diligence on 19 sites which had previously been used for the production of asphalt and other bituminous products. This project involved representing the buyer/developer in purchase contract negotiations, reviewing Phase I/II site assessments, independent third party oversight of remedial activities, review of certification reports, innovative means of managing the beneficial reuse of contaminated materials to make the purchase financially feasible, preparing risk assessments, and providing land use and plat maps for development of the property.

• Management of the closure of a refinery in Neodesha, KS. Tasks included the dewatering of settling basins containing 250,000 cubic yards of hazardous wastes, and the permitting, design and construction of an on-site Subtitle C landfill for the containment of the waste after dewatering. The closure plan includes systems for the recovery of gas, the collection and treatment of leachate, storm water control and treatment, and a composite cover system to minimize permeability.

• Management of the removal of 28 fuel storage tanks and the installation of 23 fuel storage tanks including dispensers, piping, generator day tanks, and remediation of soil and groundwater contamination at Hill Air Force Base, Utah.

• Management of a site characterization study and corrective action plan for the release of fuel from a municipal service center. After the release was reported, prepared the preliminary assessment surveys, environmental assessments, free product report, monitoring well survey, health and safety plan and documentation and reporting procedures, installed 7 groundwater wells and 10 soil borings to determine lateral and vertical extent of contamination, handled investigative waste sampling and disposal, and prepared the site characterization study and corrective action plan.

• Management of a $0.8 million soil and groundwater remediation project involving diesel, regular gas, and unleaded gas from a tank farm at a municipal service center. Designed the soil vapor extraction and treatment system and groundwater treatment system for this site.

PROFESSIONAL LICENSES:

Registered Professional Engineer: Arizona, California, Colorado
Licensed General Engineering Contractor: Arizona, California, Utah
Licensed Hazardous Materials Contractor: California

PROFESSIONAL AFFILIATIONS:

American Society of Agricultural Engineers
American Society of Civil Engineers
Solid Waste Association of North America (SWANA)
National Solid Waste Management Association (NSWMA), Board of Governors
Arizona Chamber of Commerce, SCS Corporate Representative

CERTIFICATIONS:

Certificate of Completion: 24-Hour TSD Facility Operator
Certificate of Completion: 40-Hour Hazardous Waste Site Activities
Certificate of Completion: 8-Hour Hazardous Waste Site Manager/Supervisor
Certificate of Completion: 8-Hour Hazardous Waste Annual Refresher
Manager of Landfill Operations, SWANA
Instructor: Waste Screening in MSW Facilities, SWANA
Instructor: Health and Safety at Sanitary Landfills, SWANA
Instructor: Training Sanitary Landfill Operating Personnel, SWANA
Instructor: Operational Issues for Landfill Managers, SWANA
American Red Cross, Standard First Aid
American Heart Association, CPR
District Compliance Coordinator Course, (WMI)
Sewer/Surface Water Management Course, (WMI)
Hazardous and Special Waste Course, (WMI)
Regulatory Awareness Training Course, (WMI)
Employee and Community Right-to-Know Course, (WMI)
Advanced Landfill University, (WMI)
Environmental Management System Evaluation & Compliance, (WMI)

PUBLICATIONS AND PRESENTATIONS:

Smith, S.B. “Solid Waste Facilities in Israel”, presented at the 15th Annual Arizona Landfill & Solid Waste Management Seminar, Phoenix, Arizona, May 18-20, 2005.

Smith, S.B. “Operating and Compliance Audits – How Can You Benefit?”, presented at the 14th Annual Arizona Landfill & Solid Waste Management Seminar, Tucson, Arizona, April 28-30, 2004.

Smith, S.B. “Bio-Digester Design and Gas Use”, presented at the Sanitary Landfills for Latin America International Technical Conference, Buenos Aires, Argentina, March 8-10, 2004.

Smith, S.B. “Bio-Digester Design for Animal Manures and Gas Use”, presented at the Business Opportunities in Organic Waste Management, Energy Generation and CDM Conference, Lima, Peru, November 3-4, 2003.

Smith, S.B. “Retrofitting a Landfill for a Golf Course”, presented at the 13th Annual Arizona Landfill & Solid Waste Management Seminar & Arid Climate Symposium, Scottsdale, Arizona, May 14-16, 2003.

Mezzacappa, D.J., Smith, S.B., and Laflen, J.M. “Evaluating Landfill Final Cover Soil Loss”, in Proceedings from SWANA’s 7th Annual Landfill Symposium, Louisville, Kentucky, June 17-19, 2002.

Smith, S.B. “Using GPS Technology in the Solid Waste Industry”, presented at the 10th Annual Arizona Landfill and Solid Waste Seminar, Tucson, Arizona, June 8, 2000.

Smith, S.B. “Composting – Can It Work For You?”, presented at the 10th Annual Arizona Landfill and Solid Waste Seminar, Tucson, Arizona, June 8, 2000.

Smith, S. B. “Slope Failure: The Bogotá Experience”, presented at the 9th Annual Arizona Landfill Seminar; Prescott, Arizona, May 13, 1999.

Smith, S. B. “Safety and Health Considerations in the 90's”, presented at the 5th Annual Arizona Landfill Seminar; Phoenix, Arizona, May 18, 1995.

Smith, S. B. "The Use of Municipal Sewage Sludge in Reducing Irrigation Demand," presented at SMU Water Conference: Water for the 21st Century - Will It Be There, April 1984.

Smith, S. B., and Christensen, E. H. "Design of Land Application System in an Arid Climate," presented at SMU Water Conference: Water for the 21st Century - Will It Be There, April 1984.

Smith, S. B., and Christensen, E. H. "Selection of Land Application Systems in an Arid Climate," in J. A. Replogle and K. G. Renard, (ed.), Water: Today and Tomorrow, ASCE Irrigation and Drainage Division, July 1984.

Smith, S. B., Houck, C. P., and Smith, J. L. “Ten Years of Experience with Subsurface Injection”, Transactions of the ASAE, Vol. 27, No. 6, pp. 1771-1770, 1984.

Smith, S. B., Houck, C. P., and Smith, J. L. “Using a Simple Water Balance in Scheduling Land Treatment”, ASAE Technical Paper, No. 80-2100, December 1984.

Smith, S. B., Utschig, J. A. M., and Follett, R. H. “Sludge Nitrogen Availability for Dryland Winter Wheat”, ASAE Technical Paper, No. 84-2646, December 1984.

Smith, S. B. "Calculating Sludge Loading Rates on Crop Nitrogen Needs," Biocycle Magazine, May-June, 1983.

Smith, S. B., and Butler, J. F. "Methods of Sludge Application on Dryland Wheat," ASAE Technical Paper, No. 82-2503, December 1982.

Smith, S. B., Houck, C. P., and Smith, J. L. “Ten Years of Experience with Subsurface Injection”, ASAE Technical Paper, No. 82-2100, June 1980.