ALEX MOFIDI, P.E. Water Quality & Treatment Solutions, Inc. An Environmental Engineering & Science Consulting Company
12402 North Division Street, Suite 335 Spokane, Washington 99218 Tel: 509.473.9650
EDUCATION: M.S., Civil Engineering, California State University Fullerton B.S., Civil Engineering, California State Polytechnic University, Pomona
Fax: 509.473.9655 Cell: 509.951.7783
[email protected] http://www.WQTS.com
1997 1992
REGISTRATION: Professional Engineer, State of California. Number C 61223 Professional Engineer, State of Washington, Number 43559 Water Treatment Plant Operator T3, State of California. Number 18274
TEACHING EXPERIENCE: 2004 – 2007
Adjunct Lecturer, Department of Civil and Environmental Engineering California State Polytechnic University, Pomona
Water Treatment Design, Engineering Hydraulics, Water Supply & Treatment Engineering
PROFESSIONAL EXPERIENCE: Water Quality & Treatment Solutions, Inc.
Spokane, Washington field office for the Northridge, California-based corporation 2007 – present: Principal Engineer
Metropolitan Water District of Southern California
Los Angeles, California 2006: 2001 – 2006: 1991 – 2001:
Water Quality Purification Unit Manager (Interim) Water Quality Process Development Team Manager Junior, Assist., Assoc., and (registered) Engineer; Process Development Team
SUMMARY: Alex Mofidi has over 15 years of process engineering experience and is a Principal Engineer with Water Quality & Treatment Solutions, Inc., a specialty environmental engineering and science consulting company whose mission is to provide water utilities with innovative and cost effective solutions to their water quality and treatment challenges. He is currently working on various projects including evaluating the performance of water treatment plants, conducting pilot- and bench-scale testing of water treatment technologies, and development of Regulatory Compliance Plans. He works with water utilities addressing water quality and treatment challenges, or with other engineering firms in support of water treatment design projects. From 1991 through 2006, Mr. Mofidi was a member, and then Manager of the Applied Research Department (Process Development) of Metropolitan Water District of Southern California, a wholesale water supplier with a treatment capacity of more than 2.5 million gallons of water per day to more than 17 million people in Southern California. During his tenure with Metropolitan, Mr. Mofidi was responsible for a large number of water quality and treatment evaluation projects conducted for Metropolitan and
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many of its retail member agencies, such as managing Metropolitan’s Desalination Research and Innovation Partnership (DRIP) program with a total combined program worth of more than $40 million. Mr. Mofidi also led a number of research projects funded by the AWWA Research Foundation, has worked with State and Federal regulatory agencies in the development and implementation of new drinking water quality and treatment regulations. Mr. Mofidi has also been adjunct lecturer in the Department of Civil Engineering at California State Polytechnic University, Pomona. His teaching focus has been in the applied engineering principles of hydraulics, water treatment principles, and design and construction of engineering research and development platforms. In 2006, Mr. Mofidi served as the interim Water Quality Purification Engineer for Metropolitan. In this capacity, he was the lead for all activities related to water quality regulatory compliance; examination of source water quality and investigation of proposed changes in the watersheds to improve the quality of the raw water entering the treatment plants; substantiation of the influence of land use patterns, watershed recreation and point-and non-point source pollution; and establishment of operational criteria for both near-term operations and long-term planning to ensure regulatory compliance. Mr. Mofidi is duly-registered as a Professional Civil Engineer in both the State of California and the State of Washington, and is a California board-certified water treatment plant operator.
RECOGNITIONS & AWARDS:
Excellence for Exceptional Customer Service, Innovation, and Creativity, “Evaluation of Emerging Alternative Disinfectants,” from CEO R. Gastelum, Metropolitan Water District of Southern California (2003, team award). Excellence for Exceptional Customer Service, Innovation, and Creativity, “Ultraviolet Reactor Study and Analysis,” from CEO R. Gastelum, Metropolitan (2003, team award). Grand Prize Award in Research and Excellence in Environmental Engineering, “Metropolitan Water District of Southern California’s Oxidation Demonstration Project,” presented by the American Academy of Environmental Engineers (1993, team award).
MEMBERSHIP IN PROFESSIONAL and HONORARY ORGANIZATIONS:
Member, American Water Works Association (AWWA) Member, American Society of Civil Engineers (ASCE) Member, Chi Epsilon national civil engineering honor society Co-founder and member; International Ultraviolet Association (IUVA)
COMMITTEES and WATER INDUSTRY APPOINTMENTS:
Int. Ozone Assoc./IUVA 2007 World Congress Local Organizing Committee Co-Chair 2007 AWWA; Ultraviolet Standards Committee 2006 – present AWWA; “State of the Science of Adenovirus” workshop participant 2005 AWWA; Water Industry Tech. Action Fund Project Advisory Committee 2004 – present Institute of the Americas, UC San Diego; public health workshop invited speaker 2003 U.S. EPA National Center for Environmental Research; proposal review committee 2002 – present City of Los Angeles; recruiter/interviewer for senior engineering-level staff 2001 IUVA; Co-founder and elected member of the Board of Directors: 1999 – present Awwa Research Foundation; Technology Transfer Conferences; invited speaker 2000 – present Natural Sciences & Engineering Research Council, Canada; proposal review comm. 1999 – present U.S. EPA; UV Technical Working Group for the Federal Advisory Committee Act (FACA) development of Stage 2 Microbial/Disinfectants & Disinfection By-Products Rules 1999 – 2000 AWWA; Technical Advisory Committee on UV Treatment (UVDGM review) 1999 – 2006 Awwa Research Foundation; Project Advisory Committee(s) (multiple projects) 1998 – present AWWA Journal, ASCE JEE, and Elsevier Science Journal Chemosphere; peer reviewer 1997 – present
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EXPERIENCE: Mr. Mofidi has been involved in many water quality and treatment projects across the United States. A list of selected projects is included in the following table.
Type
Client/ Employer
Description
Year
On-Call Services & Technical Support
Hazen and Sawyer, New York
Technical advisor for evaluating the hydraulic engineering of a largescale, ultraviolet disinfection treatment plant that will provide 2-billion gallons of water per day of disinfected, unfiltered surface water to the Burrogh of Manhattan for the New York Department of Environmental Protection. Technical advisor to develop a demonstration-scale testing program for ultraviolet disinfection biodosimetry for the Greater Cincinnati Water Works. Develop bromate control strategy plan for full-scale testing of alternatives to be evaluated at ACWD Water Treatment Plant No. 2.
2002 2003
Malcolm Pirnie, Cincinnati Alameda County Water Dist., Calif. Jackson Engineering & Jordanelle Special Services District, Utah
Water Treatment
Metropolitan Water District of Salt Lake and Sandy, Utah Zone 7 Water Agency, Calif.
Serrano Water District, Calif.
Eastern Municipal Water District, Calif. Park Water Co., Calif. Carollo Engineers and Elsinore Valley Water District
Conduct water quality and treatment evaluations and bench-scale testing to improve treatment at the Keetley Water Treatment Plant (9MGD, lime upflow clarification of Ontario Tunnel Mine drainage) and the Twin Creeks Water Treatment Plant (0.5-MGD, conventional treatment of snow melt runoff). Evaluate corrosivity potential, develop methods to reduce solids production, identify treatment to control taste-and-odor compounds, address quality, treatment, and regulatory issues surrounding introduction of new groundwater and surface water sources to the treatment plants, distribution system, and treatment-bypass discharge/receiving waters. Identify water treatment bottlenecks and outline procedures for the District to conduct pilot- and full-scale testing in order to successfully expand capacity of Little Cottonwood Water Treatment Plant (ozone and conventional treatment) from 113- to 150-MGD. Manage and conduct bench- and pilot-scale testing of technologies to control taste-and-odor causing compounds at the Del Valle and Patterson Pass Water Treatment Plants. Work is developing water quality design criteria that will be used for development of full-scale engineering design of new treatment facilities. Manage and conduct bench- and pilot-scale testing of ozone and ultraviolet light technologies to meet Long-Term 2 Enhanced Surface Water Treatment Rule regulatory requirements and control taste-andodor compounds at Walter E. Howiler Water Treatment Plant. Tracer testing of chlorine contact basins located at the Temecula Valley Regional Water Reclamation Facility (basin flow = 6 MGD) and the Perris Valley Water Reclamation Facility (basin flow = 5 MGD). Manage and conduct pilot testing for removal of arsenic and manganese from well water. Manage bench & pilot testing to evaluate new treatment strategies to comply with the Stage 1 Disinfectants and Disinfection By-Products Rule requirements for TOC removal and identify treatment changes to mitigate for short filter runs at the 9-MGD Canyon Lake Water Treatment Plant.
2003
2007
20072008
20072008
2007 2007
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Type
Client/ Employer
Description
Year
Water Treatment (continued)
Metropolitan Water District of Southern California
Oversee multi-disciplinary team to identify need, complete scoping study, preliminary design, final design, construction, and startup/operation of a new, 5,000 sq ft, 2-story building holding a 40gpm pilot water treatment plant facility at Metropolitan’s F. E. Weymouth water treatment plant. Responsible for water quality design criteria, oversight of performance of consulting engineering services and engineering staff efforts, coordination with Metropolitan’s Capital Improvements Program process and Engineering’s project management, advising Metropolitan’s upper management of needs and progress, and presenting project funding authorization requests to Metropolitan’s Board of Directors. Part of a multi-disciplinary team of ~10 persons from Engineering, Operations and Water Resources Management that review, rate, and recommend all Capital improvement projects that fulfill the needs of the General Manager’s Business Plan, meet budget requirements, and allow Metropolitan to maintain 100-percent compliance with all regulatory requirements. Program team reports directly to the General Manager’s office as mandated by Metropolitan’s Board of Directors. Oversee development of bench-, pilot-, and demonstration-scale testing of alternatives to acidification to control bromate formation in SPW and SPW/CRW blended waters.
2003 – 2006
Coordinate and implement tools to assist in security/threat monitoring program for Metropolitan.
2005 2006
Perform/coordinate staff for all aspects of conducting a lithiumchloride based tracer study to characterize the disinfection efficiency and hydraulic performance of two full-scale, 80-mgd ozone contactors at Metropolitan’s H.J. Mills WTP in Riverside, CA. Results presented to utility management and Department of Health Services. Provide technical support during startup and long-term operation of full-scale biologically-active, dual-media filtration (biofiltration) following ozonation at the H.J. Mills (160 MGD) and J. Jensen (750 MGD) WTPs. Oversight included plant operational stability as well as distribution-system monitoring and communication with member agencies. Develop emergency response protocols effective against finished water microbial compromise (paper study).
2003
Program manager of the Desalination Research and Innovation Partnership (DRIP) program, a nine-year (1997-2006), $42.2 million, multi-organizational program developing novel, large-scale desalination processes treating brackish surface water and groundwater, agricultural drainage water, and municipal waste water to reduce salinity in the Southern California region. Evaluate long-term operation of chlorine dioxide treatment and quantify formation of biodegradable dissolved organic matter (BOM) and potential need for biofiltration following treatment.
2002 2006
Conduct bench-scale testing to evaluate the feasibility of implementing short-term, chlorine contact at Metropolitan’s SPW/CRW blend plants to meet Stage 2 M/DBP Rule requirements. Proposed treatment would be in raw waters prior to conventional treatment.
2002 2004
Metropolitan Water District of Southern California
Metropolitan Water District of Southern California Metropolitan Water District of Southern California Metropolitan Water District of Southern California Metropolitan Water District of Southern California Metropolitan Water District of Southern California Metropolitan Water District of Southern California
Metropolitan Water District of Southern California Metropolitan Water District of Southern California
2005 – 2006
2006
2002
2002
2002 2004
Alex Mofidi, P.E. Type
Water Treatment (continued)
Research Projects
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Client/ Employer
Description
Year
Duke University; Raleigh, NC
Coordinate/conduct Metropolitan’s participating-utility efforts for AwwaRF 2599 “Innovative UV Technologies to Oxidize Organic and Organoleptic Chemicals” Develop training documents and criteria and perform instruction via courses held for Metropolitan and member agency operators. Key areas of instruction included ozone plant operations, shutdowns, disinfection calculation, overall process performance and minimization of DBPs. Develop bench and pilot-scale testing program to evaluate options of removing quartzite-based particulates prior to Edmonston Pumping Plant (quartz particles were destroying the steel pump impellars) for California Dept. of Water Resources, and convey results to DWR.
2000 2002
Metropolitan Water District of Southern California California Department of Water Resources; Sacramento, CA Awwa Research Foundation, Colorado
CalFed; San Francisco, CA
California Department of Water Resources, Proposition 13 funding Metropolitan Water District of Southern California
Black and Veatch, Inc.; Kansas City, MO California Energy Commission; Sacramento, CA
Lead Investigator for AwwaRF 3105 “Challenge Organisms for Inactivation of Viruses by Ultraviolet Treatment” with Dr. Ernest Blatchley III (Civil Engineering Dept., Purdue University, West Lafayette, ID); O. Karl Scheible (HydroQual Ultraviolet Validation and Research Center, New York, NY); Seattle Public Utilities (Seattle, WA); Weber Basin Water Conservancy District (Layton, UT); Eastern Municipal Water District (Perris, CA). Ultraviolet (UV) disinfection validation for organisms resistant to disinfection, such as adenovirus, require development of new biodosimetry methods to quantify UV reactor disinfection efficiency. This project evaluates development of new microbial and chemical surrogates for biodosimetry evaluation of UV reactors at high disinfection dosages (several hundred millijoules per square centimeter) and demonstrates efficacy of results. Principal Investigator and program manager of a CalFed Bay-Delta Water Management and Ecosystem Restoration Program project titled “Integrating Ultraviolet Light to Achieve Multiple Water Quality Objectives (DWQ Program).” Project goals were to evaluate the use of UV light, ozone, chlorine and chlorine dioxide to meet multiple water quality objectives (disinfection, minimization of disinfection byproducts [DBPs], reduction of micropollutants). Principal Investigator for the development of methods to measure UV light dose in large-scale UV reactors. Includes computational fluid dynamics and irradiance (CFD-i) model development, validation, and performance prediction of full-scale (>25 mgd) UV reactors and use of a new microsphere technology to validate CFD-i reactor prediction tools. Evaluate demo-scale (5-MGD) feasibility of chlorine dioxide disinfection for treatment of California State Project water (SPW)/Colorado river water (CRW) blends (includes ferrous chloride removal of chlorite, identify of chlorine dioxide contact times, and subsequent use of powdered activated carbon for taste and odor control without impacting filters). Refine CFD modeling to predict the outcome of MS-2 biodosimetry conducted on a 3-MGD UV reactor. AwwaRF project 2768 “Ultraviolet Disinfection for Large Water Treatment Plants.” Develop monitoring protocol for UV treatment of drinking water and determine the efficacy of using UV (effect on DBPs, minimization of micropollutants). Conduct experiments in on-line UV dose estimating techniques for large-scale reactors without biodosimetry verification challenges (predict UV dose delivery). Project 400-00-013 “Demonstration of UV Technologies for Microorganism Disinfection and Micropollutant Oxidation.”
1998
1997 1998
2006 2007
2002 2005
2002 – 2006
2002 – 2004
2001 – 2004 2001 – 2003
Alex Mofidi, P.E. Type
Research Projects (continued)
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Client/ Employer
Description
Year
University of New Hampshire; Durham, NH
Co-Principal Investigator to Quantify UV dose-response of Escherichia coli 0157:H7, Adenovirus types 2, 40, and 41, Astrovirus serogroup II, Calicivirus Bos-1, Echovirus-1, and Rotavirus SA-11 and surrogate organisms Bacillus subtilis (and other native waterborne aerobic spores), MS-2, and heterotrophic plate count (HPC) bacteria to UV light. AwwaRF project 2593 “Inactivation of Pathogens by Innovative UV Technologies.” Develop bench-scale pulsed-UV oxidation, reduction, and photolysis technology to destroy bromate, Methyl tert-butyl ether, perchlorate, nnitrosodimethylamine, and the taste-and-odor compounds geosmin and 2-methylisoborneol. Project 500-97-044 “Advanced Oxidation Processes and UV Photolysis for Treatment of Drinking Water.” Develop bench-scale medium-pressure and pulsed-UV technology benchmark criteria for disinfection of heterotrophic plate count bacteria, single-stranded ribonucleicacid (RNA) virus surrogate malespecific coliphage (MS-2) and double-stranded RNA virus surrogate phi-six (Φ6), Bacillus subtilis aerobic spores, Cryptosporidium parvum disinfection and deoxyribonucleicacid (DNA) repair, Giardia muris disinfection and Giardia lamblia disinfection. Project 500-97-044 “Investigation of Ultraviolet Light Disinfection.” Conduct scale-up/validation of a 3-million-gallon-per-day (mgd) medium-pressure UV reactor). Project 500-97-044 “Investigate ScaleUp Issues with UV Light Disinfection and RO Desalination.”
2000 – 2003
Demonstrate ability to increase water recovery through freeze-thaw of brackish water desalting plant concentrate water. Project “Mechanical Freeze-Crystallization of Desalting Plant Brine.”
1998 – 2000
Co-Principal Investigator to develop radiometry & chemical/biological actinometry methods to calculate germicidal UV dose from monochromatic and polychromatic UV lamps, establish UV dose/loginactivation relationships for hetertrophic and aerobic spore forming bacteria, MS-2 coliphage and C. parvum and quantify photoreactivation/dark repair of bacteria. AwwaRF project 2559 “Disinfection Efficiency and Dose Measurement for Polychromatic UV Systems.” Investigate ability of UV light to inhibit biofouling of low-pressure, reverse-osmosis membranes. Quantify UV disinfection of hetertrophic bacteria naturally occurring in drinking water and MS-2 and C. parvum spiked into pilot plant ozone/biofiltered water. Project “Pulsed-UV for Disinfection and Membrane Biofouling Control.”
1998 2001
Assistant to principal and other lead investigators (Cordelia Hwang, Metropolitan; Jerry Lineer, USGS) and responsible for developing experimental plans to conduct RO-based concentration of organic matter for fractionation and characterization from California State Project water by performing tests at full-scale conventional & ozone/biofiltration treatment plants in northern and southern California. AwwaRF project 451 “Characterization of the Polar Fraction of NOM with Respect to DBP Formation.” Assistant to principal and other lead investigators (Peter Huck, University of Waterloo; Brad Coffey, Metropolitan; Helene Baribeau, Metropolitan) to monitor biodegradable dissolved organic carbon (BDOC), filter biomass (phospholipid extraction, digestion, and quantification), and operate bench-scale distribution systems (annular reactors). AwwaRF project 252 “Optimizing Filtration in Biological Filters.”
1996 – 1999
California Energy Commission; Sacramento, CA California Energy Commission; Sacramento, CA
California Energy Commission; Sacramento, CA Southern California Edision and the Electric Power Institute; Irwindale, CA Duke University; Durham, NC
Southern California Edision and the Electric Power Institute; Irwindale, CA Metropolitan Water District of Southern California
Metropolitan Water District of Southern California
1999 – 2001
1999 – 2001
1999 – 2001
1998 – 1999
1995 – 1998
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Client/ Employer
Description
Year
Metropolitan Water District of Southern California
Assistant to principal and other lead investigators (Jill Gramith & Brad Coffey, Metropolitan) for demonstration-scale (5 MGD) testing to quantify ozone residual methods, ozone contactor hydraulics, disinfection effectiveness (CT) calculations, bromate formation and control strategies, and ozone/PEROXONE for oxidation of T&O compounds. AwwaRF project 525-89 “Demonstration-Scale Evaluation of Ozone and PEROXONE.”
1991 1998
PUBLICATIONS: 1. Wait, I.; Mofidi, A.A.; Blatchley, E.R. III, “Long-Term, Interior and Exterior Sleeve Fouling in a Medium-Pressure Ultraviolet Drinking Water Disinfection Reactor,” 2007 AWWA Water Quality Technology Conference, Charlotte, N. Car. (Nov 4-8). 2. Gabelich, C.J.; Yun, T.I.; Williams, M.D.; Knoell, T.; Pearce, W.; Daniel, U.; Cohen, Y.; Hoek, E.M.V.; Matsumoto, M.R.; Sangines-Uriarte, L.; John, P.; Scherzinger, R; Mofidi, A.A., “Applied research for large-scale desalting: the Desalination Research and Innovation Partnership.” 2007, Desalination of Seawater and Brackish Water, AWWA Ed., AWWA, Colo. 3. Shen, C.; Mofidi, A.A.; Yun, T.I.; Lee, C.; Robinson, J.; Bergstrom, D.; Blatchley, E.R. III., “Application of dyed microspheres for characterizing large-scale, medium-press. UV reactor dose distribution.” 2006 AWWA Water Quality Technology Conference, San Antonio, Tex. (Nov 5-8). 4. Blatchley, E.R. III; Shen, C.; Scheible, O.K.; Weber, E.; Rokjer, D.; Mofidi, A.A., “LT2 Enhanced Surface Water Treatment Rule and Ultraviolet Disinfection Guidance Manual implications for microsphere testing of ultraviolet disinfection systems.” 2006 AWWA Water Quality Technology Conference, San Antonio, Tex. (Nov 5-8). 5. Yun, T.I.; Gabelich, C.J.; Gerringer, F.W.; Mofidi, A.A.; Norris, M.D., “Evaluation of large-diameter reverse osmosis elements & novel concentrate reduction technologies for Colorado River water desalting.” 2006, American Membrane Technology Association Conf., Anaheim, Calif. (Aug 1-2). 6. Jin, S.; Mofidi, A.A.; Linden, K.G., “Polychromatic UV fluence measurement using chemical actinometry, biodosimetry & mathematical techniques.” 2006, ASCE Journal of Environmental Engineering (132:8, 831-841). 7. Shen, C.; Naunovic, Z.; Blatchley, E.R. III; Robinson, J.P.; Ragheb, K.; Grégori, G.; Bergstrom, D.E.; Huang, J.; Mofidi, A.A., “Quantification of UV dose by dyed microspheres for UV reactors delivering radiation other than 254nm.” 2005, AWWA Water Quality Technology Conference, Quebec City, Quebec (Nov 6-10). 8. Mofidi, A.A.; Johnston, R.; Coffey, B.M.; Gerringer; F.W.; Krasner, S.W., “Performance of largescale biofiltration for removal of particles and biodegradable organics from ozone.” 2005, AWWA Water Quality Technology Conference, Quebec City, Quebec (Nov 6-10). 9. Liang, S. & Mofidi, A.A., “Treatment of micropollutants by ultraviolet photolysis, ozonation, and advanced oxidation processes.” 2005, International Workshop on Novel and Enhanced Water Treatment Technologies and Upgrading Water Quality, Tianjin, China (Sep 6-8). 10. Gabelich, C.J.; Knocke, W.R.; Coffey, B.M.; Johnston, R.; Do, H.; Mofidi, A.A., “Manganese desorption from filter media: experiences with biological filtration.” 2005, AWWA Annual Conference and Exhibition, San Francisco, Calif. (Jun 5-9). 11. Yun, T.I.; Gabelich, C.J.; Mofidi, A.A.; Krasner, S.W.; Coffey, B.M., “Integrating ultraviolet light to achieve multiple treatment objectives.” 2005, AWWA Annual Conference and Exhibition, San Francisco, Calif. (Jun 5-9). 12. Yun, T.I.; Gabelich, C.J.; Mofidi, A.A.; Krasner, S.W.; Coffey, B.M., “Desalination Research and Innovation Partnership program update.” 2005, AWWA CA/NV Section Spring Conference, Industry Hills, Calif. (Apr 7).
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13. Yun, T.I.; Gabelich, C.J.; Cox, M.R.; Mofidi, A.A.; Lesan, R., “Reducing costs for large-scale desalting plants using large-diameter, reverse osmosis membranes.” 2006, Journal Desalination (189:143-156). 14. Mofidi, A.A. & Linden, K.G., “Disinfection effectiveness of ultraviolet light for heterotrophic bacteria leaving biologically active filters.” 2004, Journal of Water Supply, Research and Technology – AQUA (53:8). 15. Mofidi, A.A.; Yun, T.I.; Krasner, S.W.; Liang, S.; Coffey, B.M., “Formation and removal of BOM produced by chlorine dioxide treatment of California State Project water.” 2004, AWWA Water Quality Technology Conference, San Antonio, Tex. (Nov 14-18). 16. Krasner, S.W.; Yun, T.I.; Yates, R.S.; Mofidi, A.A.; Liang, S.; Coffey, B.M., “Pre-oxidation with chlorine dioxide to control bromate formation during subsequent ozonation.” 2004 AWWA Water Quality Technology Conference, San Antonio, Tex. (Nov 14-18). 17. Mofidi, A.A.; Momtaz, S. Coffey, B.M., “Predicting large-scale ultraviolet performance using computational fluid dynamics and irradiance modeling.” 2004, AWWA Annual Conference and Exhibition, Orlando, Fla. (Jun 13-17). 18. Liang, S.; Krasner, S.W.; Yun, T.I.; Yates, R.S.; Mofidi, A.A.; Coffey, B.M., The use of ferrous chloride for the reduction of chlorite and as an alternative coagulant.” 2004, AWWA Annual Conference and Exhibition, Orlando, Fla. (Jun 13-17). 19. Malley, J.P.; Margolin, A.; Mofidi, A.A.; Linden, K.G., “Inactivation of pathogens by innovative ultraviolet technologies.” 2004, AWWA Research Foundation, Denver, Colo. 20. Snyder, S.; Westerhoff, P.; Mofidi, A.A.; Wert, E. Yoon, Y., “Removal of endocrine disruptors and pharmaceuticals by oxidative water treatment.” 2004, 8th Annual Water Reuse Research Conference, Las Vegas, Nev. (May 17-18). 21. Rochelle, P.A.; Mofidi, A.A.; Marshall, M.M.; Upton, S.J.; Montelone, B.; Woods, K.; Di Giovanni, G., “An investigation of ultraviolet disinfection and repair in Cryptosporidium parvum.” 2004, AWWA Research Foundation, Denver, Colo.. 22. Linden, K.G.; Bolton, J.R.; Malley, J.P.; Mofidi, A.A.; Stefan, M.I., “Benchmarking ultraviolet collimated beam tests: interlaboratory comparison of UV sensitivity of MS-2 coliphage.” 2003, AWWA Water Quality Technology Conference, Philadelphia, Penn. (Nov 2-5). 23. Krasner, S.W.; Mofidi, A.A.; Liang, S., “DBP formation from short-term contact with chlorine, followed by long-term contact with chloramines.” 2003, Anaheim, Calif. (Jun 15-19). 24. Momtaz, S.; Sami, M.; Kashay, S.N.; Mofidi, A.A., Predicting ultraviolet disinfection system performance–simulation & experiment.” 2003, Fluent Conference, Manchester, N. Hamp. (May 5-7). 25. Mofidi, A.A., “Ultraviolet reactor validation.” 2003, IUVA Conference on Ultraviolet Disinfection for Drinking Water, Austin, Tex. (Feb 27). 26. Linden, K.G. & Mofidi, A.A., “Disinfection efficiency and dose measurement for medium-pressure and pulsed-UV disinfection systems.” 2003, AWWA Research Foundation, Denver, Colo. 27. Rochelle, P.A.; Mofidi, A.A.; Linden, K.G.; & De Leon, R., “Measuring inactivation of Cryptosporidium parvum by in-vitro cell culture.” 2003, Cryptosporidium: From Molecules to Disease, Elsevier. Thompson, Armson, & Ryan, Eds. (225 – 231). 28. Mofidi, A.A.; Rochelle, P.A.; Chou, C.I.; Mehta, H.M.; Linden, K.G.; & Malley, J.P., “Bacterial survival after ultraviolet light disinfection: resistance, regrowth and repair.” 2002, AWWA Water Quality Technology Conference, Seattle, Wash. (Nov 10-13). 29. Mofidi, A.A., “Biodosimetry and ultraviolet validation.” 2002, IUVA Conference on Ultraviolet Disinfection for Drinking Water, Ontario, Calif. (Aug 22).
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30. Mofidi, A.A.; Meyer, E.A.; Wallis, P.M.; Chou, C.I.; Meyer, B.P.; Ramalingam, S.; & Coffey, B.M., “Effect of ultraviolet light on inactivation of Giardia lamblia and Giardia muris cysts determined by animal infectivity.” 2002, Water Research (36:2098-2108). 31. Rochelle, P.A.; De Leon, R.; Mofidi, A.A., “Measure of ozone and UV disinfection of Cryptosporidium spp. using in vitro cell culture.” 2002, American Society for Microbiology Annual Conference (June). 32. Sharpless, C.M.; Chou, C.I.; Mofidi, A.A.; Linden, K.G., “N-nitrosodimethylamine removal from drinking water ultraviolet treatment: direct comparison of ultraviolet technologies.” 2001, AWWA Water Quality Technology Conference, Nashville, Tenn. (Nov 11-15) 33. Meyer, E.A. & Mofidi, A.A., “Disinfection of Giardia lamblia by ultraviolet light.” 2001, XI International Congress on Protozoology, Prague, Chech Republic (Jul 21-24). 34. Mofidi, A.A.; Baribeau, H.; Rochelle, P.A.; De Leon, R.; Coffey, B.M.; Green, J.F., “Disinfection of Cryptosporidium parvum with polychromatic ultraviolet light.” 2001, Journal American Water Works Association (93:6:95-109). 35. Mofidi, A.A.; Coffey, B.M.; Chou, C.I.; Mehta, H.M.; Green, J.F., “Demonstration-scale evaluation of ultraviolet irradiation for treatment of surface water.” 2001 AWWA Annual Conference and Exhibition, Wash., D.C. (Jun 17-21). 36. Mofidi, A.A.; Chou, C.I.; Coffey, B.M.; Meyer, E.A.; Wallis, P.M., “Disinfection of Giardia lamblia by ultraviolet light.” 2001, IUVA International Congress, Washington D.C. (Jun 14-15). 37. Rochelle, P.A.; Mofidi, A.A.; De Leon, R., “Experimental design considerations for cell culture to measure inactivation of Cryptosporidium parvum by ultraviolet irradiation.” 2001, IUVA International Congress, Washington D.C. (Jun 14-15). 38. Jin, S.; Chou, C.I.; Mofidi, A.A.; Linden, K.G., “Analysis of ultraviolet dose measurement using chemical actinometry, biodosimetry, and mathematical techniques.” 2001, IUVA International Congress, Washington D.C. (Jun 14-15). 39. Coffey, B.M; Mofidi, A.A.; Williams, M.D., DeLeon, R. Green, J.F., “Comparing ultraviolet and ozone disinfection of Cryptosporidium parvum: implications for multi-barrier treatment.” 2001, IUVA International Congress, Washington D.C. (Jun 14-15) 40. Mofidi, A.A.; Coffey, B.M.; Chou, C.I.; Liang, S.; Green, J.F., “Using UV light to achieve multiple water quality objectives.” 2000, AWWA Water Quality Tech. Conf., Salt Lake City, Utah (Nov. 5-9). 41. Mofidi, A.A., “Ultraviolet technology research activities within a large utility environment.” 2000, AWWA Research Foundation Technology Transfer Conf., Calgary, Alberta, Can. (Sept 21) 42. Mofidi, A.A.; Bartels, C.R.; Coffey, B.M.; Ridgway, H.F.; Safarik, J.; Ishida, K.; Knoell, T; Bold, R., “Ultraviolet irradiation as a membrane biofouling control strategy.” 2000, AWWA Annual Conference and Exhibition, Denver, Colo. (Jun 11-15). 43. Mofidi, A.A. & Coffey, B.M., “Research, implementation and monitoring requirements for ultraviolet light treatment of surface water.” 2000, National Water Research Institute’s UV 2000: A Technical Symposium, Costa Mesa, Calif. (Jan 27-28). 44. Mofidi, A.A.; Baribeau, H.; Green, J.F., “Inactivation of Cryptosporidium parvum with polychromatic ultraviolet systems.” 1999, AWWA Water Quality Technology Conf., Tampa, Fla. (Oct 31-Nov 3). 45. Linden, K.G. & Mofidi, A.A., “Measurement of ultraviolet irradiance: tools and considerations.” 1999, AWWA Water Quality Technology Conference, Tampa, Fla. (Oct 31-Nov 3). 46. Wolfe, R.L. & Mofidi, A.A., “Application of polychromatic ultraviolet technology for disinfection of surface waters in California.” 1999, USEPA Workshop on UV Disinfection of Drinking Water, Washington, D.C. (Apr 28-29). 47. Baribeau, H.; Hacker, P.A.; Mofidi, A.A.; Coffey, B.M.; De Leon, R., “Regrowth and biofilms: evaluating effects of biological and conventional treatment on distribution systems.” 1999, AWWA CA/NV Section Conference, Pleasanton, Calif. (Feb 18).
Alex Mofidi, P.E.
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48. Mofidi, A.A.; Baribeau, H.; Green, J.F.; De Leon, R.; Wolfe, R.L., “Disinfection using high intensity pulsed-UV irradiation.” 1998, AWWA Water Quality Technology Conf., San Diego, Calif. (Nov 1-5). 49. Baribeau, H.; Hacker, P.A.; Mofidi, A.A.; Coffey, B.M.; De Leon, R., “Effects of biological and conventional treatment on biological stability in simulated distribution systems.” 1998, AWWA Water Distribution System Disinfection Residual Workshop, Philadelphia, Penn. (Apr 26-28) 50. Mofidi, A.A., “Using BDOC to evaluate treatment plant performance: research technique or monitoring tool?” 1997, AWWA CA/NV Section Conference, Long Beach, Calif. (Oct 23). 51. Krasner, S.W.; Coffey, B.M.; Baribeau, H.; Hacker, P.A.; Hwang, C.J.; Kuo, C.-Y.; Mofidi, A.A.; Sclimenti, M.J., “The effect of ozonation and biofiltration on natural organic matter.” 1996, Natural Organic Matter Workshop: Influence of Natural Organic Matter Characteristics on Drinking Water Treatment and Quality, Poitiers, Fra. (Sep 18-19). 52. Krasner, S.W.; Coffey, B.M.; Hacker, P.A.; Hwang, C.J.; Kuo, C.-Y.; Mofidi, A.A.; Sclimenti, M.J., “Characterization of the components of biodegradable organic matter.” 1996, 4th International BOM Conference, University of Waterloo, Waterloo, Ontario, Can. (Jun 20-21). 53. Coffey, B.M.; Graff, K.G.; Mofidi, A.A.; Gramith, J.T., “On-line monitoring of ozone disinfection effectiveness within an over/under-baffled contactor.” 1995, AWWA Annual Conference and Exhibition, Anaheim, Calif. (Jun 18-22). 54. Cheng, R.C.; Coffey, B.M.; Krasner, S.W.; Mofidi, A.A.; Gramith, J.T., “Enhanced coagulation testing of ferric chloride.” 1994, AWWA Enhanced Coagulation Rsrch. Wkshp., Charleston, S. Car. (Dec 4-6).
