NATC
          Acton, MA 01720
           200,000 gal/day extended aeration facility
          1985-present


Middle School
          Westford, MA 01886
          24,000 gal/day tertiary RBC facility
          1995-present


Hotel
          Westford, MA
          40,000 gal/day tertiary RBC facility
          1987-present


Private Condominiums
          Acton, MA 01720
          8,000 gal/day tertiary RBC facility
          1985-present


Bank Headquarters
          Swansea, MA
          4,000 gal/day tertiary facility
          1997-present


High School
          Swansea, MA
          10,000 gal/day Amphidrome
          treatment system
         1997-present
Wastewater Treatment Facility Supervision
Golf Resort
           Bolton, MA 01740
            16,000 gal/day RBC facility
           1996-present


Hotel
           Boxboro, MA 01719
           40,000 advanced RBC facility
           1996-present


Private Homeowner's Assoc.
           Acton, MA
           40,000 gal/day RBC facility
           1995-present


MES, Inc.
           Carver, MA
           100,000 gal/day advanced facility
           1995-present


Condominium Association
           Mashpee, MA
           40,000 gal/day advanced
           Amphidrome treatment system
           1997-present