B.S., Chemical Engineering, University of Missouri-Columbia, 1982 M.S., Civil Engineering Environmental Division, Texas A&M University, 1984

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1 Vice President Water Business Group Technology Director Senior Fellow Drinking Water and Reuse Technologist Education B.S., Chemical Engineering, University of Missouri-Columbia, 1982 M.S., Civil Engineering Environmental Division, Texas A&M University, 1984 Professional Registrations Professional Engineer: Colorado (1989, #26382), Texas (2003, #92401), New Mexico (2003, #16178), and Arizona (2008, #47327) Distinguishing Qualifications Project manager and lead process engineer for several pioneering applications in the U.S. water market: first large scale municipal application of ozone-biological filtration for drinking water treatment of a surface source with a large treated effluent composition; first large-scale application of point-of-use, biological aerated filtration for nitrification of municipal wastewater effluent for industrial cooling; and first large-scale application of sand ballasted flocculation and in-line ozonation for drinking water treatment. Inventor, champion, facilitator of several CH2M HILL industry-leading, proprietary, software tools; CH2M HILL Parametric Cost Estimating System (CPES) for early Class 4 cost estimating; Preview for interface with CPES to create early 3-D visualization of treatment facilities; Replica for hydraulic, process control, and water quality dynamic simulation; Multi-Criteria Attribute Decision Analysis for facilitating and documenting alternatives evaluation and selection; and CH2M HILL Sustainability Intelligence Portal (SI- PORT) for sustainable resource management and tracking. Project manager and lead process engineer for several award winning projects: Massachusetts Water Resources Authority Pilot Filtration Facilities 1993 Northeast Region ACEC Grand Conceptor Award; El Paso Water Utilities, Jonathan Rogers WTP National ACEC Engineering Excellence Award; West Basin Municipal Water District, Water Reclamation Plant California ACEC Excellence Award; Denver Water Recycling Plant 2005 AAEE Superior Achievement for Excellence in Environmental Engineering Grand Prize Winner; and Albuquerque Bernalillo County Water Utility Authority, San Juan Chama Drinking Water Treatment Plant 2010 New Mexico ACEC Engineering Excellence Grand Conceptor Award and AAEE Excellence in Environmental Engineering Design Grand Prize. Areas of subject matter expertise include process engineering and project management for water reuse and drinking water treatment facilities planning, pilot testing, design, services during construction, and start-up. Relevant Experience Mr. McEwen has 26 years experience, all at CH2M HILL, in the municipal water supply industry including extensive expertise in the planning, design, construction, and operation of MASTERRESUME_BROCKMCEWEN_nov2010 1

2 water treatment facilities. These innovative facilities ensure regulatory compliance and have ranged in capacity from 2 mgd to more than 180 mgd. He is a nationally recognized authority on water treatment, including water process engineering and project delivery. He has conceived, studied, designed, and assisted with the startup of drinking water facilities deriving their source water from groundwater, surface waters of varying disposition, and from wastewater treatment plant secondary effluents. Processes studied and implemented range from sand-ballasted clarification to ozone and biological filtration to microfiltration and reverse osmosis. For the past 5 years has served as the Water Business Group Technology Director where his prime responsibility is leadership for attracting, developing, and retaining technical subject matter expertise in the form of people, processes, and tools to provide innovative problem solving and project delivery excellence to the water market. Relevant Experience Mr. McEwen has served as project manager, senior technical consultant, and/or lead process engineer for over 70 projects in his career. Following is a sampling of his experience. Project Manager, Eastern New Mexico Rural Water System. Brock is the project manager for the $500 million Eastern New Mexico Rural Water System that is a major new water supply project to relieve the critical municipal water shortage situation in eastern New Mexico. The shortage is caused by the steady decline in water level in the Ogallala aquifer that is the sole source of municipal and agricultural water for much of eastern New Mexico. The ENMRWS project was developed to address the municipal and industrial water shortage resulting from the declining and deteriorating groundwater resource. The federally authorized and funded project will be implemented in phases over the next 10 years and consists of the following major components: Approximately 150 miles of raw and finished water conveyance pipelines. A raw water intake structure and pump station at the south shore of Ute Reservoir, with a flow rate of 28 million gallons per day (mgd). A 28 mgd raw water booster pump station at the base of the Caprock and a 1 million gallon storage tank at the top of the Caprock in Quay County. A 28 mgd water treatment plant in Curry County with a finished water booster pump station to service downstream municipalities. Lateral pipelines with pressure reducing stations, where required, to service Cannon Air Force Base, Clovis, Elida, Grady, Melrose, Portales, and Texico. Lead Process Engineer and Preliminary Design Manager, Albuquerque Bernalillo County Water Utility Authority, Water Treatment Plant, Albuquerque, NM. Brock served as the lead process engineer for a greenfield, 92-mgd expandable to 120-mgd water treatment plant. The new treatment plant introduces surface water into the Albuquerque system for the first time. Surface water reduces unsustainable groundwater pumping and blends with groundwater sources to reduce groundwater arsenic levels that exceed the new 10 microgram per liter maximum contaminant level. Brock performed extensive raw water sampling to characterize the surface water treatment challenges, and performed four, seasonal rounds of treatability MASTERRESUME_BROCKMCEWEN_nov2010 2

3 testing to demonstrate treatment performance and developed process design criteria. The new WTP includes presedimentation to remove coarse sand and turbidity from the Rio Grande source of supply; enhanced ferric chloride coagulation, and sand-ballasted clarification to remove turbidity, disinfection byproduct precursors, and taste and odor causing compounds; ozonation to provide Giardia and virus inactivation, as well as oxidation of taste and odor causing compounds; granular activated carbon filtration to polish water and further biologically remove disinfection byproduct precursors and taste and odor causing compounds; free chlorine disinfection for distribution system microbiological protection; and lime stabilization to adjust finished water ph and stability to more closely approach that of the current groundwater supply. Project Manager and Lead Process Engineer, El Paso Water Utilities Water Projects, El Paso, TX. Brock served as lead process engineer for pilot testing, predesign, final design support, and startup of the $40 million, 40-mgd Jonathan Rogers WTP that treats Rio Grande source water containing as much as 20 percent wastewater effluent by volume. The plant includes ozonation and GAC filtration to enable compliance with Safe Drinking Water Act requirements regarding organics and chlorinated disinfection byproducts. Additionally, Brock served as project manager for the $23 million expansion of the Jonathan Rogers WTP from 40 to 60 mgd. Furthermore, Brock was the project manager and lead process Engineer for the 30-mgd Upper Valley WTP. This $50 million project removes arsenic from groundwater. The plant was designed to allow ready retrofit and expansion to 80 mgd for future treatment of Rio Grande surface water. Lead Process Engineer and Design Manager, Central Wyoming Regional Water System WTP, Casper, WY. This was a $33.5 million project that expanded the existing surface water treatment plant and wellfield treatment facilities. Innovative improvements included retrofitting 27 mgd of high-rate microsand-ballasted clarification in an existing 6-mgd conventional clarification basin; ozone primary disinfection with in-pipe contactor; and natural treatment Cryptosporidium filtration credit for groundwater under the direct influence of surface water. Sand-ballasted clarification allows the plant to stay online during North Platte River turbidity events greater than 400 NTU, where in the past the plant was shut down when turbidity exceeded 100 NTU. Lead Process Engineer and Design Manager, West Basin Municipal Water District, Water Recycling Program, El Segundo, CA. Brock managed predesign and final design services for the Water Recycling Program. In 1994, the West Basin Water Recycling Facility in El Segundo, California became operational. The facility, originally designed to treat 20-mgd, with provisions for ultimate expansion to 100-mgd, making it one of the largest planned water recycling facility in the United States. The plant uses a unique combination of proven water treatment technologies, including two offsite 5-mgd nitrification facilities designed to remove ammonia from the water to meet local petroleum refineries stringent water quality needs for industrial cooling purposes. The water is used for three distinct applications: industrial cooling, irrigation, and barrier injection water. The nitrification facilities were required for the industrial cooling application, as without this treatment, the ammonia in the water would have caused corrosion and biological growth in the cooling towers. The irrigation water is used by local golf courses, school districts, and city parks. The barrier injection water is injected into the West Basin coastal aquifer to keep saltwater from seeping into Southern California s groundwater and MASTERRESUME_BROCKMCEWEN_nov2010 3

4 contaminating the drinking water supply, and serves as a supplement to native groundwater for potable purposes. Lead Process Engineer and Preliminary Design Manager, Denver Water Board, Water Recycling Project, Denver, CO. The Denver Water Board completed construction of a 30-mgd water reuse plant to reclaim secondary effluent from the Metro Wastewater Reclamation District's wastewater treatment plant. The reclaimed water is used for irrigation, cooling water for a local power plant, process water for industrial plants, and other municipal purposes. The project included a source water pump station and pipeline, a treatment plant, a high-service pump station, and a distribution system with satellite reservoirs and pump stations. The first phase has a capacity of 30-mgd with provisions for expansion to 45-mgd. CH2M HILL originally conducted pilot testing of in-line filtration, direct filtration, and conventional filtration of Metro's secondary effluent to select a treatment process for the reclamation plant. The results from this testing indicated that conventional filtration was the most cost-effective and robust treatment process of the three. Before initiating the design, Denver Water asked CH2M HILL to pilot test membranes as a possible alternative treatment approach to conventional filtration. Two systems were piloted over 4 months to determine the effectiveness of membrane treatment on secondary effluent and to develop design criteria to facilitate a cost comparison between membranes and conventional treatment. Conventional filtration was ultimately selected. CH2M HILL then served as Lead Engineer for preliminary and final design of all the major water treatment processes including biological aerated filtration for ammonia removal (one of the largest in the United States), horizontal paddle wheel flocculation, inclined plate sedimentation, and deep-bed anthracite filtration. CH2M HILL also provided services during the construction and assisted with plant start-up and commissioning. Denver Water estimates recycling for industrial and municipal clients will save enough water to supply 35,000 households, or about one-fifth of its residential customers. Customers of the recycled water get a price break, which has created a waiting list. Since February 2004, Xcel Energy has been using about 6-mgd to cool its Cherokee Power Plant. Among others signed up for the recycled water include Denver parks, playgrounds at Denver Schools, and landscaping at area golf courses. Professional Organizations/Affiliations American Water Works Association Publications and Presentations Over 50 professional publications (journals and books), and presentations (regional and national) on the subject of water reclamation and treatment for potable drinking water supply. More notable publications include: Co-Author of AWWA Water Reuse Committee Report on Indirect Potable Reuse. Contributing author. Wastewater Reclamation and Reuse. Technomic Publishing Co., Ltd.. Reviewer of Water Environment Federation (WEF)/AWWA publication. Using Reclaimed Water to Augment Potable Water Resources. MASTERRESUME_BROCKMCEWEN_nov2010 4

5 Technical editor. Treatment Process Selection for Particle Removal Manual. American Water Works Association Research Foundation and International Water Supply Association joint project. With Carl L. Hamman, Jr. and Anthony G. Meyers. "Guide to Selection of Water Treatment Processes." Water Quality and Treatment (textbook). Chapter 3. AWWA- Water Quality Division Honors Bachelors of Science in Chemical Engineering, Magna cum Laude, University of Missouri- Columbia, 1 st in Class of Who s Who in American Universities & Colleges (1982). American Institute of Chemical Engineers Senior Meritorious Award, St. Louis Chapter (1982). Pi Mu Epsilon (Mathematics Honor Society) Phi Lambda Upsilon (Chemistry Honor Society) Phi Kappa Phi (University-wide Honor Society) Tau Beta Pi (Engineering Honor Society) Master of Science in Environmental Engineering, Suma Cum Laude, Texas A&M University, 1 st in Class of MASTERRESUME_BROCKMCEWEN_nov2010 5