Changes in MDH Drinking Water Structure Feeling the Earth Move The Minnesota Department of Health (MDH) Division of Environmental Health has been reorganized. As part of this reorganization a Section of Drinking Water Protection (DWP) has been formed to deal with activities related to the Safe Drinking Water Act (SDWA). Managed by Gary Englund, DWP consists of four units: Community Water Supply, Noncommunity Water Supply, Source Water Protection, and Technical and Administrative. The Community Water Supply Unit, supervised by Dick Clark, is responsible for SDWA compliance and enforcement activities for community water systems. This unit includes the field staff that inspects, samples, and Earth, lots of it, has been moving at the site of a new reservoir for Minneapolis Water Works. provides technical assistance to community water systems. The Noncommunity Water Supply Unit, supervised on an acting basis by Major sitework was performed last fall in Jerry Smith, is responsible for SDWA compliance and enforcement activities preparation for the placement of concrete for for noncommunity water systems. This unit includes the staff that inspects, the new structure. See page 3 for full story. samples, and provides technical assistance to noncommunity water systems. In addition, this unit coordinates noncommunity compliance activities with local health agencies and the Environmental Field Services Section of the division. The Source Water Protection Unit, supervised by Bruce Olsen, is responsible for source water and wellhead protection activities required by the SDWA. This unit provides technical assistance and compliance activities for both community and noncommunity water systems to ensure that source water is adequately protected; it also manages the Geographic Information System used to gather and map much of the information needed to perform source water protection activities. The Technical and Administrative Unit, supervised by Doug Mandy, handles most of the technical and administrative support functions for the other units. This support includes the drinking water revolving loan fund, engineering plan review, operator education and certification, data management, enforcement, and grants and contracts. The support staff, supervised by Marilyn Krause, provides general support services for the section. 1998 Legislative Initiatives To satisfy requirements of the 1996 amendments to the Safe Drinking Water Act (SDWA), the MDH drinking water program will be pursuing a pair of legislative initiatives this session. The first proposes the creation of administrative penalty amounts specific to public water supply systems serving more than 10,000 people and would include authority for penalties of $1,000 per day per violation, up to a maximum of $10,000 per violation. Without this change, Minnesota would lose its delegated authority—and with it, its federal grants that totaled approximately $45 million in 1997—from the U. S. Environmental Protection Agency (EPA). The other initiative would require new community and nontransient noncommunity systems to submit documentation of their technical, managerial, and financial capacity to establish that the system can maintain compliance with federal SDWA requirements. Minnesota must adopt this authority to prevent a 20 percent reduction of its drinking water revolving loan grant (which was approximately $42 million in 1997). It is estimated that few systems will be affected by this rule. Spring 1998 Volume Five/4 Inside:1998 Metro School Agenda Membrane Filtration Confined Space Close Call SDWA Implementation Activities Upcoming Certification Exam Dates March 5, St. Cloud March 26, Rochester April 3, Bloomington April 16, St. James May 22, Ely June 12, Deerwood See calendar on back page for more information New Treatment Technologies Membrane Filtration: Wave of the Future? In anticipation of the proposed Enhanced Surface Water Post-treatment requires the addition of sodium hydroxide Treatment Rule, several surface water supplies in Minnesota as a corrosion inhibitor and hypochlorite for disinfection. As are considering membrane filtration as a treatment a side note, the supply generates its own hypochlorite by alternative. At the same time, membrane filtration is quickly sending an electrical current through a brine solution (NaCl) gaining popularity throughout the nation. In the Midwest, to create a 0.8 percent aqueous solution of chlorine. the cities of Kenosha, Wisconsin, and Marquette, Michigan, The waste stream from air-water backwash is discharged have installed membrane filtration, while many other back into Lake Superior while waste from chemical cleaning treatment plants are in the preliminary design phase. of the membrane units is neutralized and sent to the sanitary Membrane filtration processes are sewer. The air-water backwash process broken down by pore size into creates a high pressure surge and takes microfiltration and ultrafiltration, and place approximately once every 50 molecular weight cutoffs characterize minutes. The chemical cleaning uses nanofiltration and reverse osmosis. caustic soda along with other proprietary Microfiltration and ultrafiltration are agents and is expected to take place once physical separation processes, similar to a month. a sieve. The membranes act as surface The individual membrane units are filters, with particles trapped on the tested for possible leaks using pressure filter surface and removed through tests every 24 hours. A change in backwashing. pressure may be attributable to either a Microfiltration, with the largest pore hole in one of the 20,000 hollow fibers size (0.1-1 micrometers), removes Marquette’s membrane filtration unit or a leak in the O-ring seal of the turbidity, algae, bacteria, Cryptosporidium and Giardia. membrane unit. Using a stethoscope, one can determine if Ultrafiltration goes one step further by removing viruses and the leak is a result of a hole in a fiber. At that point, an organic macromolecules. Nanofiltration removes all of the integrity test is done to find the fiber that is not working above as well as hardness, synthetic organic compounds, and properly. Air bubbles are sent through the unit to determine natural organic matter. Finally, reverse osmosis goes one which fiber is leaking. Once the fiber is found, a pin (similar step beyond nanofiltration by removing ions such as salt. to a sewing straight pin) is inserted in the fiber, and the unit The membrane filtration process is similar to conventional may be put back on-line. filtration in that it involves pre-treatment, filtration, postThe chosen treatment alternative has turned out well. The treatment, and residue disposal. Pre-treatment may require finished water turbidity is between 0.01 and 0.07 NTU with pre-filtration, coagulant addition, acid addition and/or scale particle counts ranging from zero to 20 particles per milliliter, inhibitor addition. Post-treatment often requires degassing, and it is believed that the variations in particle counts may be corrosion control, and disinfection. In addition, residues may attributed to air bubbles in the particle counter as a result of require treatment such as aeration or pH adjustment. the pressurized air-water backwash. The city of Marquette is an example of the successful Marquette has had a successful start up with no shutdowns implementation of membrane filtration in the Midwest. The as of yet. Water and Wastewater Superintendent Roger public water supply recently went on-line with an 8 million Olson is more than satisfied with the performance of the gallon per day (MGD) treatment plant. The only prenew membrane filtration plant. treatment used is a 500 micrometer (or 1/32 inch) mesh It is possible that this process will some day be as strainer. The supply takes its water from Lake Superior, commonplace as lime-softening as long as cities like with an average raw water turbidity of 0.3 nephelometric Marquette continue to have success with membrane turbidity units (NTU). filtration. Waterworks Operators Quiz Waterline 1. Which of the following elements cause hardness in water? a. sodium and potassium b. nitrogen and sulfer c. fluoride and oxygen d. calcium and magnesium 2. The component of a centrifugal pump sometimes installed on the end of a suction pipe to hold the priming is known as a: a. casing. b. drain. c. foot valve. d. ventilator. Published quarterly by the Drinking Water Protection Section of the Minnesota Department of Health Editor: Stew Thornley Waterline staff: Dick Clark, Marilyn Krause, Cindy Swanson, Doug Mandy To request this document in another format, call 612/215-0700; TDD 612/215-0707 or toll-free through the Minnesota Relay Service, 1/800/627-3529 (ask for 612/215-0700). 3. 3-log removal means ____ percent removal/inactivation. a. 99.9 b. 99.99 c. 99.999 d. 100.0 Answers on page 7 2 Minneapolis Increases Capacity New Reservoir to Expand Storage A half-million Twin Cities residents rely on Minneapolis Water Works for their drinking water. In addition to Minneapolis, the utility supplies the suburbs of Hilltop, Golden Valley, Crystal, New Hope, Columbia Heights, and portions of Edina and Bloomington, including the airport and Mall of America. All the water in the Minneapolis system comes from the Mississippi River. If the river were to become contaminated, Minneapolis would have to depend on the treated water it stores in reservoirs. Its current storage capacity allows for a one day of reserves under normal flow rates (slightly longer with use restrictions that would be imposed during an emergency). Last year, the city began a multimillion-dollar project to increase its storage capacity by 30 percent through the construction of a new reservoir at its Hilltop site in New Brighton, approximately five blocks east of their Columbia Heights filtration plant. The 40-million gallon reservoir (measuring 540 x 432 feet) will be 125 feet north of an existing 40-million gallon reservoir that was built in the 1950s. The site is at the highest point in the Twin Cities, meaning that, after water is pumped to the reservoirs, it can feed into the distribution by gravity, eliminating the need for a pumping station and the resulting construction, maintenance, and electrical costs. The design concept of the new reservoir consists of cast-in-place concrete, underground twin cells constructed using a slab-on-grade mat foundation, supporting concrete interior columns, and 24-foot-high poured concrete walls. The two-way flat concrete roof slab, which will be topped by a membrane and covered by three feet of soil, will be supported by concrete columns and concrete walls. Trees, shrubs, and prairie grasses will be used to make the site as attractive as possible, according to Galina Izraelev, the project engineer for the city. Clearing of the site began last May with earthwork commencing in October. Veit & Company of Rogers, Minnesota performed the $3.9-million contract for earth moving. The uneven topography on the site—with surface elevations City Inspector Preston Grubb and Design Engineer Galina Izraelev at the site of the new reservoir for Minneapolis Water Works. ranging from 345 feet at the southern portion to 325 feet at the northern end— has resulted in a great deal of cutting and filling with some of the fills reaching depths of 25 feet. Veit & Company removed inadequate soils and placed and compacted new material to support the weight of the reservoir. Much of the cutting and filling was related to the consolidation characteristics of the soils beneath the heavily loaded structure. Using soil excavated from the southern part of the site greatly reduced truck traffic, thereby reducing the effects of the construction activity to neighbors, a concern to residents in both New Brighton and Columbia Heights as well as the Columbia Heights Public Schools. Izraelev and Water Works’ management have attended numerous public meetings and worked with the cities and school district to coordinate a hauling schedule to minimize the impact of the construction. The contract for the concrete work, estimated to be around $15 million, will be let in the winter of 1998-99 with construction of the structure beginning in the spring of 1999. As the reservoir is being built, a watermain construction crew from Minneapolis Water Works will install interconnecting piping and valves between the new and existing reservoirs. Construction on the reservoir is expected to be completed in 2000 with landscaping to be done in the spring of 2001. DWP Profile: Brian Noma Brian Noma is a Public Health Engineer in Drinking Water Protection (DWP). His long career in state government (which has earned him the nickname “Lifer”) encompasses a stint as an energy conservation engineer with the Energy Division at the Department of Public Service and as a student worker in the MDH Public Water Supply Unit. Born and raised in southwest Minneapolis, Brian has ventured far in his travels, including Great Britain, France, Switzerland, Italy, and Hawaii. His hobbies are all types of sports activities, including coaching youth hockey, hunting, fishing, as well as woodworking and fixing stuff. Brian has a dog, Haley, a wife, Sarah, and many tropical fish. 3 Operator School and Training News Information regarding registration for schools and applications for certification exams is in the form on page 7 1998 Metro School The 1998 Metro Waterworks Operators’ School will be held from Wednesday, April 1 through Friday, April 3 at the Thunderbird Hotel in Bloomington. The certification exams will be offered on Friday afternoon. Participants in the school will receive 16 credit hours for their attendance. Registration for the school is $85 ($95 after March 16 or at the door). As usual, the first two afternoons will include hands-on training courses, both at the Thunderbird and at off-site locations, with topics including New Plant Modifications, Chemical/Caustics/Chlorine Safety, Lab Procedures, and Basic Water Operations. Space will be limited in most of the hands-on workshops; participants will be able to sign up on a firstcome, first-served basis during check-in on the first day of the school. In advance of the Metro School, an Exam Prep will be held on Monday, March 23 at the Crystal Community Center. The fee is $25 ($30 after March 16 or at the door). Wednesday, April 1 Thursday, April 2 8:30-noon • Motivational Speaker Dick Beardsley • SDWA: What it Means to the Operator • OSHA Compliance—Gordy Siers, Department of Labor and Industry (The Exam Study Session will also be offered at this time) 8:30-noon (Concurrent session) • Stump the Attorney: Public Employee Liability—Bob Bauer, Severson, Sheldon, Dougherty, and Molender • Optimization of Phosphate Inhibitor Treatment—Lih-in Rezania, MDH • Confined Space—Dale Mashuga, Anoka-Hennepin Technical College 1-4:00 • Basic Water Operations (no limit on participants) or 8:30-noon (Concurrent session) • Wellhead Protection—MDH Source Water Protection Unit 12:45-4:00 Hands-on Training at Off-Site Locations • Hydrants (50 participants maximum) • Chemical/Caustics/Chlorine Safety (30) • Tapping Demonstration (50) • Sizing, Selection, and Repair of Sensus Meters and AMR Products • New Plant Modifications (50) 1-4 Thunderbird • Exam Study Session or • Lab Procedures (30 participants maximum) or Exceptional Customer Service April 30 in Bloomington 12:45-4:00 Hands-on Training at Off-Site Locations • Hydrants (50) • Chemical/Caustics/Chlorine Safety (30) • Iron/Manganese Removal Plant Operation and SCADA (50) • Sizing, Selection, and Repair of Badger and AMR Products (30) • New Plant Modifications (50) American Water Works Association (AWWA) will present a one-day seminar, Exceptional Customer Service for Utilities: Leave a Lasting Impression, on Thursday, April 30 at the Thunderbird Hotel in Bloomington. The seminar will use case studies, group exercises, lecture, and question-and-answer sessions in covering techniques that motivate employees and increase satisfaction as well as skills that employees need to provide exceptional service in all types of working situations. Participants will receive either .7 Continuing Education Units or 7 Professional Development Hours. Early registration is $159 for AWWA members and $199 for nonmembers ($40 more for registration after March 25). Special rates on guest rooms are available at the Thunderbird (612/854-3411). A brochure has been mailed to all AWWA members; others may contact Mayme Larson at 303/347-6204. Friday, April 3 4 8:00 Breakfast AWWA Membership Benefits— Gerald Allen,Minnesota Section AWWA Chair Featured Speaker—Dig This by Stew Thornley 9:15 Product Exposition with Mini-Sessions 1:00 A, B, C, D Certification Exams More Schools The Southwest District will hold a oneday school on Thursday, April 16 in St. James. Registration is $20. The Northeast School will return to the Holiday Inn SunSpree Resort on the south shore of Shagawa Lake in Ely from Wednesday, May 20 to Friday, May 22. Registration is $70 ($75 at the door or if postmarked after May 11). A block of guest rooms is being held at reduced rates until May 1. Call the Holiday Inn at 1/800/365-5070 and mention the water school to get the special room rate. The Central District School will move to Ruttger’s Bay Lake Lodge outside Deerwood from Wednesday, June 10 to Friday, June 12. Registration is $45 for those staying at Ruttger’s and $75 for those staying elsewhere with an additional $5 for registrations postmarked after May 28 or at the door. For room packages, contact Ruttger’s at 1/800/ 450-4544. Those attending the Southeast, Northeast, or Central School will receive 16 credit hours. Participants in the Southwest School will receive four credit hours. Operators in the respective districts of these schools will receive an agenda and registration information in the mail. Others may contact LeAnne Workcuff at 612/215-0787. (Registration information is also on the form on page 7.) March 12 Teleconference Focuses on Distribution The next American Water Works Associatoin teleconference, Maintaining will be held March 12 at the Earle Brown Center in St. Paul. For more information, contact Monica Jacobwith at 612/591-5433. Risk Management is the topic of an AWWA teleconference scheduled for October 22. Water Quality in the Distribution System, MDH Well Conference March 25 The Well Management Unit of the Minnesota Department of Health will holds its annual conference at the Thunderbird Hotel in Bloomington on Wednesday, March 25. Industry and regulatory experts will speak on subjects that include well construction and sealing case history, the 1997 floods, iron in drinking water, small surface water supply systems, new technologies for in-situ groundwater remediation, and groundwater resources exploration in southwest Minnesota. Conference participants will receive credit for six hours of continuing education that can apply toward renewal of full, limited, and monitoring well contractor licenses and registrations. Registration for the conference is $50 ($60at the door). For more information, contact Marlene Randall at 612/215-0810 or Ed Schneider at 612/215-0827. Northwest School The Northwest Water Operators’ School in Fergus Falls last December had an afternoon of hands-on workshops, including one on hydrants, at the city’s water treatment plant. This year’s Northwest School is scheduled for December 1-3 at the Red River Inn in Moorhead. SDWA Implementation Activities Requirements of the 1996 amendments to the Safe Drinking Water Act have set in motion a number of implementation and rulemaking activities. The Drinking Water Protection Section has been monitoring and participating in these activities to ensure that the requirements are implemented in a practical and workable manner. All the requirements of the amendments affect public water supplies to some degree, and it is a good idea to stay informed about the issues. As more information becomes available concerning the various activities, updates will be provided in the Waterline. The following is a list implementation activities: Contaminants being Reviewed for Regulation or Re-regulation: Aldicarb (group), Arsenic, Lead and Copper, Nickel, Radiochemicals, Radon, Sulfate, Unregulated Contaminants Treatment: Enhanced Surface Water Treatment (short-term and long-term) Rule, Groundwater Disinfection Rule, Information Collection Rule, Microbiological/Disinfection By-products Rule, Recycling of Filter Backwash,Variance Technologies,Variances and Exemptions, Groundwater under the Influence of Surface Water Drinking Water Revolving Loan Fund: Loan Fund Development, Capacity Development, Conservation Plans, Operator Certification, Needs Assessment Reporting Requirements: Consumer Confidence Reports, Public Notification Modifications, State/EPA Compliance Reports Source Water Protection: Source Water Assessment, Source Water Petition, Wellhead Protection Contaminant Monitoring, Reporting, and Selection: Chemical Monitoring Reform, National Occurrence Database, Candidate Contaminant List 5 Confined Spaces: Treat with Respect On what he described as a “routine day” last September, MDH engineer Mark Sweers visited a water system in his South Central Minnesota district. Instead of a pump house, this system had a meter pit on one of its wells. “In comparison to a lot that I’ve seen, this one is a well constructed pit, very clean, with good access to the pit,” says Sweers. “It’s been in service for ten years with no problems.” Sweers went into the pit, followed by the system’s utility superintendent, and immediately felt nauseous. He had been fighting the flu and at first thought he was experiencing symptoms from that. But then his chest got heavy and he had difficulty breathing. The utility superintendent was also having trouble breathing. “Is there bad air in here?” Sweers asked. “Let’s get out of here,” was the reply. They quickly climbed back up the ladder and got outside. Both felt woozy and shaken by the experience. Staff from the water utility checked the pit and found it was low in oxygen. The ending to this story could have been worse—far worse. Sweers and the utility superintendent were fortunate that the pit had a fixed ladder and large enough access to allow for a fast exit. Many confined spaces are much harder to get out of. And, in cases of oxygen deficiencies, often a person does not realize something is wrong until it is too late. But the hazards of confined space extend beyond concerns over access and atmosphere. Bill Anderl, another MDH district engineer and a safety expert, says one of the issues is recognizing what a confined space is. “Many things that water supply personnel deal with, such as iron filters with multi-celled tanks, are often ignored in terms of concern because they are not thought of as confined spaces,” he explains. Confined spaces share three elements: 1) they often limit or restrict ability to enter or exit quickly; 2) they are not designed to be occupied; and 3) they often contain multiple hazards. The size, shape, and location of the access port for a confined space can increase the time it takes to get out of an area should a problem occur. Some openings are small, others are shaped in Bill Anderl helps MDH district engineers calibrate their gas detectors. such a way that impedes access, and some are at the top of tall vessels, such as water towers, and may have their openings partially blocked by parts of machinery. A lot of spaces are difficult to be inside of (let alone perform work in) simply because they weren’t designed to be occupied. It can be difficult to work in close quarters, and overexertion is a hazard. Work procedures in a confined space may differ from those of the same task in an open area. The shape of the space may increase the risk of becoming wedged or trapped. In others, slips and falls become more likely. Just the act of being confined can affect a person’s senses. It can be difficult to see or hear clearly; feelings of disorientation can add to the probability of an accident. Part of a process Confined spaces can be dangerous for no other reason than they are confined spaces; however, the hazards associated with confined spaces can increase because of the system or process the space is a part of. For example, some spaces store or pressurize chemicals; others contain moving machinery. One of the greatest concerns with confined spaces deals with the atmosphere in them (the danger that Sweers and the utility superintendent encountered). Gases and vapors in a space may be toxic. They can be from leaks, but they can also be created by the work being done within the space. Solvents and adhesives being used in the work space can be the source of such vapors. And because of the limited ventilation of a confined space, these gases and vapors may concentrate. But even greater than the presence of toxic fumes is the risk of asphyxiation caused by oxygen deficiency. Covered pits sometimes have little or no oxygen. Sometimes the process of the confined space, even the chemical action of rusting equipment, robs it of oxygen. Other things, such as the bacterial action of soil or fermentation, also consume oxygen. Even the walls of a space (or what’s inside the walls) can suck up oxygen. A non-toxic damp charcoal filter can absorb oxygen in a space. Gases such as carbon dioxide, argon, and nitrogen can displace oxygen. Don’t get complacent regarding the atmosphere within a confined space, even if you know chemicals or other toxic materials are not present. An oxygen-deficient space is one of the most dangerous places to be. Machinery and equipment within a confined space pose hazards. They can serve as an ignitor, providing a flame or spark, and increase the risk of an explosion. Powered devices that are not locked out can cause shocks or other injuries from contact with the equipment. Anderl points out that not only are medical emergencies, such as slips, seizures, injuries, more likely in confined spaces because of the conditions, such an emergency can be more dangerous. “If the emergency leaves you incapacitated, you may not be discovered by someone for a much longer period of time because of where you are,” he says. Controlling Confined Space Hazards—Go to page 7 6 MDH district engineers have now been issued additional testing equipment along with training on how to use gas detectors and other information on the hazards of confined space and how to control them. For Mark Sweers, the close call he had in the meter pit has made him even more careful in dealing with these situations. “Be respectful of confined spaces,” he says. “Check them first because you never know.” Confined Space—Continued from page 6 Controlling Hazards But hazards associated with confined spaces can be controlled with proper precautions and work practices. Control procedures involve isolating the space from processes and systems that may create hazards within the space. Locking out energy sources, bleeding liquid and gas lines into the space, locking circuit breakers, and securing moving parts are all control procedures. But these may not be enough. Protective equipment such as gloves, helmets, safety glasses, ear plugs may be necessary in addition to air-supplying respirators and retrieval lines. Finally, remember the importance of testing and monitoring. Never trust your life to a space that hasn’t been tested. In addition to testing the atmosphere before entering, monitor the atmosphere, in case it changes, during occupancy. Revised Operations Manual Ready The revised version of the Minnesota Water Works Operations Manual is available through Minnesota Rural Water Association (MRWA) for $17 plus tax and postage. Contact MRWA at 218-685-5197 or [email protected] to order a copy. Answers to Quiz 1. d 2. c 3. a REGISTRATION/REGISTRATION FORM You may combine multiple fees on one check if more than one person is attending a school; however, please make a copy of this form for each person. Questions regarding certification, contact Karla Peterson at 612/215-0761. Questions regarding registration, contact Cindy Swanson at 612/215-0767. Southeast School, March 24-26, Best Western Apache, Rochester. Fee: $60 ($80 at the door). Exam Prep, March 23, Crystal Community Center Fee: $25 ($30 after March 16 or at the door). Please indicate which exam you are preparing for: ___ A or B ___ C or D Metro School, April 1-3, Thunderbird Hotel, Bloomington Fee: $85 ($95 after March 16 or at the door). Northeast School, May 20-22, 1997, Holiday Inn Sunspree, Ely. Fee: $70 ($75 after May 11 or at the door). Central School, June 10-12, 1997, Ruttger’s Resort. Fee: $45 if staying at Ruttger’s, $75 if not staying at Ruttger’s (add $5 to the cost if paying at the door or if postmarked after May 28). Check here if you would like to receive an exam application. (Applications must be submitted at least 15 days prior to the exam.) Check here if you would like to receive a study guide (1996 Edition). If you have any special dietary needs, please indicate them here: Name Address City Zip Day Phone Employer Please enclose the appropriate fee. Make check payable to Minnesota Department of Health. Mail this form and fee to Public Water Supply Unit, Minnesota Department of Health, 121 East Seventh Place, Suite 220, P. O. Box 64975, St. Paul, Minnesota 55164-0975. Registration for the following school must be sent to the person listed (checks made payable to Minnesota AWWA): April 16, Southwest School, St. James. Fee is $20. Send to Mark Sweers, Minnesota Department of Health, 410 Jackson Street, Suite 150, Mankato, Minnesota 56001. 7 CALENDAR Minnesota Section, American Water Works Association March 23, Exam Prep, Crystal Community Center, Contact John Hill, 612/531-1166 or Stew Thornley, 612/ 215-0771 *March 24-26, Southeast Water Operators’ School, Best Western Apache, Rochester, Contact Paul Halvorson, 507/285-7289 *April 1-3, Metro Waterworks Operators’ School, Thunderbird Hotel, Bloomington, Contact Stew Thornley, 612/215-0771 *April 16, Southwest Waterworks Operators’ School, St. James, Contact Mark Sweers, 612/389-2501 *May 20-22, Northeast Waterworks Operators’ School, Holiday Inn SunSpree Resort, Ely, Contact Floyd Nelson, 218/ 225-2812 or Stew Thornley, 612/2150771 *June 10-12, Central Waterworks Operators’ School, Ruttger’s Bay Lake Lodge, Deerwood, Contact Dave Schultz, 612/255-4216 or Stew Thornley, 612/215-0771 Minnesota Rural Water Association Contact Kyle Kedrowski, 218/685-5197 *March 3-5, Technical Conference, St. Cloud April 15, Elbow Lake, Corrosion Control & Anayltical Procedures American Water Works Association April 30, Exceptional Customer Service for Utilities, Thnderbird Hotel, Bloomington, Contact Mayme Larson, 303/347-6204 or Stew Thornley, 612/ 215-0771 AWWA Water Utility Management Institute March 8-11, Contact Dick Grefe, 612/625-0196 AWWA Teleconference March 12, Maintaining Water Quality in the Distribution System, Contact Monica Jacobwith, 612/5915433 Well Conference March 25, Thunderbird Hotel, Bloomington, Contact Ed Schneider, 612/ 215-0827 *Schools/meetings marked with an asterisk include a certification exam Minnesota Department of Health 121 E. 7th Place Suite 220 P. O. Box 64975 St. Paul, Minnesota 55164-0975 ADDRESS CORRECTION REQUESTED Minnesota Pollution Control Agency (Wastewater Operator Training) Contact Emily Armistead, 612/296-7251 March 18-20, Annual Wastewater Operations Seminar, Thunderbird Hotel, Bloomington April 7-9, Land Application of Biosolids Seminar, Kelly Inn, St. Cloud April 14-16, Stabilization Pond Seminar, Redwood Inn, Redwood Falls April 28-30, Stabilization Pond Seminar, Northland Inn, Bemidji May 12-14, Spray Irrigation Seminar, Kahler Inn & Suites, Rochester Minnesota Section AWWA 1997-98 District Officers Northwest District: Chair—Harvey Triepke, Fergus Falls Vice Chair—Troy Hall, Moorhead Director—Jarrod Christen, Detroit Lakes Secretary—Don Christianson, Crookston Southwest District: Chair—Mark Sturm, St. James Vice Chair—Ron Tibodeau, Windom Director—Maurice Chaplin, Marshall Secretaries—Mark Sweers and John Blomme, MDH
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