Subcontractors Water Works General Building & Specialty Contractors (BC) General Engineering & Specialty Contractors (AC) General Engineering, General Building & Specialty Contractors (ABC) Mechanical Contractor Plumbing Sewer & Drain Line Contractor (C-37a) Subcontractors Water Chlorination & Sanitation Contractor (C-37d)

Electrical Contractor (C-13) Boiler, Hot-Water Heating & Steam Fitting Contractors (C-4) Fire Protection Contractor (C-20) Sewer, Sewage Disposal, Drain, & Pipe Laying Contractor (C-43) Refrigeration Contractor (C-40) Plumbing Contractor (C-37) Subcontractors Well Contractor (C-57) Welding Contractor (C-56) Water Chlorination & Sanitation Contractor (C-37d) Ventilating & Air Conditioning Contractor (C-52)

Boiler, Hot-Water Heating & Steam Fitting Contractors (C-4) Air Compressors Subcontractors Water Chlorination & Sanitation Contractor (C-37d) Treatment & Pumping Facilities Contractor(C-37e)

Design-Assist Cabinet, Millwork, & Carpentry Remodeling & Repairs Contractor (C-5) Gutters Contractor (C-44a) General Building & Specialty Contractors (BC) Fire Protection Contractor (C-20) Fabricated Metals Solar Hot Water Systems Contractor (C-61a) Solar Energy Systems Contractor (C-61) Sheetmetal Contractor (C-44) Sewer & Drain Line Contractor (C-37a) Plumbing Contractor (C-37) Ornamental, Guardrail, & Fencing Contractor (C-32) Metal Roofing Manufacturer Subcontractors Welding Contractor (C-56) Water Chlorination & Sanitation Contractor (C-37d) Ventilating & Air Conditioning Contractor (C-52) Structural Steel Contractor (C-48)

Consultants (Construction) Landscaping Contractor (C-27) Irrigation Supplies and Equipment Sewer, Sewage Disposal, Drain, & Pipe Laying Contractor (C-43) Pumps Installation Contractor (C-57a) Pipes & Valves Fittings Waterproofing Products Supplier Waterproofing Contractor (C-55) Water Works Water Chlorination & Sanitation Contractor (C-37d) Waste Water Equipment Valves/Pumps Tanks Material & Equipment Dealers