Peter S. Cartwright, PE  ~ Partial Client List                                                                                                                                CLIENT      WATER PURIFICATION WASTE TREATMENT/PROCESSING     TECHNICAL     MARKETING TECHNICAL     MARKETING 3M COMPANY X X X X      St. Paul, MN ADVANTALIFE X   X        Hunt Valley, MD AIR PRODUCTS & CHEMICALS     X X     Allentown, PA AKZO NOBEL X X X X      Deventer, The Netherlands AL-OBAIDI TRADING & CONTRACTING CO. X   X        Safat, Kuwait AMERIWATER, INC. X X         Dayton, OH APOLLO METALS, LTD     X         Bethlehem, PA AT & T X            Orlando, FL ATLANTIC FILTER X X         West Palm Beach, FL ATLANTIC STATES LEGAL FOUNDATION X X X X     Syracuse, NY AUTOTROL CORP. X X          Milwaukee, WI B.F. GOODRICH COMPANY X            Beltsville, MD BAGA INTERNATIONAL AB     X X      Karlskrona, Sweden BASF CORP.     X        South Brunswick, NJ BASIC AMERICAN FOODS     X        Black Foot, ID BEND RESEARCH, INC.   X X X      Bend, OR BETHLEHEM STEEL CORP.       X      Bethlehem, PA BIODERM, INC.     X        Tampa, FL BIO-METRIC SYSTEMS, INC. X            Minneapolis, MN BIOMIN, INC.     X         Ferndale, MI BLACK & VEATCH     X        Phoenix, AZ BODUM, INC. X            Racine, WI BOOZ ALLEN & HAMILTON   X          London, United Kingdom BOSTON STRATEGIES     X X       Boston, MA BRILLIANT WATER SOLUTIONS       X      Den Haag, The Netherlands BRUSH WELLMAN     X        Shoemakersville, PA BURGESS & NIPLE, LTD.     X        Columbus, OH CALGON CARBON CORP. X X           Pittsburgh, PA CANADIAN WATER QUALITY ASSOCIATION X   X        Toronto, Ontario, Can. CBI INDUSTRIES, INC.     X X      Oak Brook, IL CDR PIGMENTS/DISPERSIONS     X         Elizabethtown, KY CELANESE CORP.   X           Charlotte, NC CELGARD, INC.   X   X       Charlotte, NC CHESTER ENVIRONMENTAL     X        Pittsburgh, PA CHEVRON, INC. X            Richmond, CA CIBA-GEIGY CORP     X        Toms River, NJ CMA, PA X            Minneapolis, MN COCA-COLA X            Puerto Rico COMPACT MEMBRANE SYSTEMS, INC. X            Wilmington, DE CONKLIN CO., INC. X X          Shakopee, MN CONSEP MEMBRANES, INC.   X   X      Bend, OR CONTROL DATA CORP.     X        Minneapolis, MN CORNING, INC. X X          Corning, NY CORONADO GENERATING STATION X            St. Johns, AZ CRANDALL ENGINEERING (NEW  BRUNSWICK ELECTRIC POWER) X            Canada CULLIGAN WATER X            Minneapolis, MN CUNO, INC. X            Meriden, CT D & S MANUFACTURING CO. X             High Ridge, MO DAMES & MOORE        X          Bethesda, MD DCI, INC. X           St. Cloud, MN DELTA IMPEX BV     X          ‘s-Gravenpolder,                  The Netherlands DHV RAADGEVEND INGENIEURSBUREAU BV     X        Amersfoort, The Netherlands DIALYSIS CLINICS, INC. X            Nashville, TN DONALDSON COMPANY X X X X      Minneapolis, MN DORSEY & WHITNEY, LLP   X   X Mpls, MN DOW CHEMICAL CO. X X X X      Midland, MI DSM RESEARCH   X          Geleen, The Netherlands DURIRON COMPANY     X X      Angola, NY E.F. HOUGHTON & CO.     X        Valley Forge, PA E.G. & G. FLORIDA, INC.     X        Kennedy Space Center, FL E.G. & G. IDAHO (DOE) X   X        Idaho Falls, ID E.R. SQUIBB & SONS, INC. X            Brunswick, NJ EASTERN ENTERPRISES   X   X      Weston, MA EASTON CHEMICAL CARIBBEAN, INC.     X        San Juan, PR ECOWATER SYSTEMS X X          St. Paul, MN ELECTROLUX CORP. X X          Bristol, VA ENGINEERING SUPPORT SERVICES X X X X       Steilacoom, WA ETA SYSTEMS     X        St. Paul, MN ETS, INC. X X          Elkhart, IN EVAL COMPANY OF AMERICA     X        Pasadena, TX FAIRVIEW SOUTHDALE HOSP. X             Edina, MN FANTOM TECHNOLOGIES, INC. X X          Toronto, Ontario, Can. FILMTEC CORPORATION   X X X      Minneapolis, MN FLECKENSTEIN, INC. X   X        Brookfield, WI FLUID SYSTEMS   X          San Diego, CA FOUR ANGELS, INC. X            Marina del Rey, CA FRANKLIN ELECTRIC   X   X      Bluffton, IN FSI INTERNATIONAL X   X        Chaska, MN GATES CORPORATION   X          Denver, CO GE OSMONICS, INC. X X          Minnetonka, MN GLEGG WATER COND. X            Guelph, Ontario, Canada GLENN RASMUSSEN FOGARTY & HOOKER X X     PA Tampa, FL. STEVEN M. GOLDBERG CO., L.P.A. X            Cleveland, OH GOULDS PUMPS, INC. X X          Seneca Falls, NY GRANT THORNTON INT’L. X X          New York, NY GREENE & EISEN CO., L.P.A. X            Cleveland, OH GUILFORD MILLS X   X        Greensboro, NC H & M MANUFACTURING X            Midwest City, OK HACH CO. X           Loveland, CO HARMONY BROOK X            Minneapolis, MN HOLLINGSWORTH & VOSE CO.  X X X X      East Walpole, MA HONEYWELL, INC., CONSUMER BUSINESS PRODUCTS X            Southborough, MA HONEYWELL, SSED X            Plymouth, MN HYDRO FAX DIVISION AMCHEM CORP.     X        Ambler, PA ICI CHEM. & POLYMERS, LTD     X        Runcorn, U.K. INDUSTRIAL & ENVIRONMENTAL ANALYSTS       X      Essex Junction, VT INNOTECH X X X X      Trumbull, CT IN-SINK-ERATOR X X          Racine, WI INTERNATIONAL PAPER     X        Arden Hills, MN JOHNSON MATTHEY, INC.     X        Wayne, PA KEMENG SERVICES   X          Legos Nigeria KENDALL COMPANY X X X X      Boston, MA KOCH REFINING COMPANY X            St. Paul, MN      KONICA IMAGING USA, INC. X X          Glen Cove, NY KOPPERS COMPANY     X        Pittsburgh, PA KRAFT FOODS INT’L X            Glenview, IL KURE ILETISIM GRUBU X X          Istanbul, Turkey LABCONCO X X          Kansas City, MO LC SYSTEMS X   X        West Chester, PA LEMNA INTERNATIONAL, INC. X            Minneapolis, MN LIQUIDIA TECHNOLOGIES, INC.     X        Durham, NC LIVINGSTON PRODUCTS X            Wheeling, IL LUCAS AEROSPACE CARGO SYSTEMS     X        Jamestown, ND LUTHERAN HOSPITAL X            LaCrosse, WI MANILDRA MILLING CORP.     X        Minneapolis, MN MARSH RESEARCH X X          Batavia, IL MASTER WATER CONDITIONING CORP. X X          Pottstown, PA MEDRO SYSTEMS, INC. X X X X      McKinney, TX MEDTRONIC CORP. X            Tempe, AZ MEMBRANE DEVELOPMENT   X   X SPECIALISTS, Escondido, CA MEMTEC AMERICA CORP.       X      Timonium, MD METITO INTERNATIONAL   X          Houston, TX METROPOLITAN MECHANICAL X       CONTRACTORS, Minn., MN MID-AMERICAN ENVIRONMENT SERVICES     X        Grand Rapids, MI MILLIPORE, INC.   X          Bedford, MA MINNTECH CORP.   X          Minneapolis, MN  MIT, LINCOLN LABORATORY X            Cambridge, MA MTC, INCORPORATED     X        Leiden, The Netherlands MOEN INCORPORATED               North Olmsted, OH  MONSANTO COMPANY     X        St. Louis, MO MYRON L Co X   X        Carlsbad, CA NATIONAL MEDICAL CARE X X           Rockleigh, NJ NATIONAL PRODUCTIVITY COUNCIL X   X         Chennai, India NATIONAL SANITATION FOUNDATION X            Ann Arbor, MI NEOMECS, INC.   X          Minneapolis, MN NEWBIO SYSTEMS, INC.     X         Edina, MN NEW DIMENSION PLATING, INC.     X        Hutchinson, MN NIRO INC.     X X       Hudson, WI NITTO DENKO AMERICA X X X X       Los Angelos, CA NORTHLAND ALUMINUM PRODUCTS, INC. X X           Minneapolis, MN NORTHWEST AIRLINES     X        Minneapolis, MN  NORTHWESTERN MEMORIAL HOSPITAL X             Chicago, IL NOVO NORDISK A/S X             Bogvaerd, Denmark  NUKEM NUCLEAR TECH.     X X      Columbia, SC OIL ENERGY SYSTEM, INC. X   X       San Juan, Puerto Rico  OLIN CHEMICALS GROUP X X X X      Stamford, CT OMEX ENVIROMENTAL ENG. LTD. X            Houston, TX OSMONICS, INC. X X          Minnetonka, MN  PALL CORPORATION X            Pensacola, FL PARKSON CORP. X X X X      Fort Lauderdale, FL PARTHENON GROUP X   X        Boston, MA PCI RO DIVISION   X   X      Whitchurch, U.K. PEL TECHNOLOGIES, LLC X X          Canton, OH PENNWALT CORPORATION   X   X      Philadelphia, PA PENTAIR, INC. X            St. Paul, MN PFIZER CORPORATION     X        Brooklyn, NY PHILLIPS LIGHTING BV X            Eindhoven, The Netherlands  PINCHOT & CO.   X   X      New Haven, CT PLASWORLD, INC. X X          Milwaukee, WI POLLUTION CONTROL LTD.     X        Teleford, U.K. POLLUTION TECH. SYSTEMS     X         Garland, TX POLYMEN X X           Toulouse, France PORTALS WATER TREATMENT X X X X      London, U.K. PRIVATE EQUITY MGRS. INC.   X           Boston, MA PROCAM CONTROLS     X        Plano, TX PUREPULSE TECHNOLOGIES X X           San Diego, CA QUANTUM TECHNOLOGIES     X        Jones Mill, AR RAVEN INDUSTRIES X X X X      Sioux Falls, SD RECON VERFAHRENSTECHNIK GMBH     X        Stuttgart, Germany REGAL WARE, INC. X X          Kewaskum, WI REN CORP. X            Nashville, TN RENAL SYSTEMS, INC. X X          Minneapolis, MN REPAP TECHNOLOGIES, INC.     X        Valley Forge, PA R. JACK CLAPP & ASSOCIATES CO., L.P.A. X            Cleveland, OH ROBINS, ZELLE, LARSON, & X