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Plans and Specifications


Plans should be legible and drawn to a scale which will permit all necessary information to be correctly shown. The size of the plans should not be larger than 36 inches by 50 inches. The plans shall include topographic maps, general layouts, plan views, elevations, sections, and supplementary views which, together with the specifications, provide the information for the contract and construction of the works. The topographic map shall include the location of the existing and potential sources of pollution listed in any reports. Each plan shall include a suitable title block showing the name of the municipality, authority, company, water district, or institution served, the scale in feet, a graphic scale, the date, and the name, address, and seal of the design engineer.

Additionally, the plans shall include:

  1. The datum used
  2. The north point
  3. Boundaries of the municipalities, water districts, or specified areas to be served
  4. Land area owned and/or controlled by the water supplier, including the Zone I wellhead protection area
  5. Topography of the drainage area and site, including wells, springs, streams, lakes, dams, and reservoirs
  6. The location and outline form of equipment
  7. Water levels
  8. Flood levels
  9. The locations and logs of test borings and wells
  10. The diameter and depth of well casings and liners


Complete, detailed technical specifications shall be supplied for the proposed project, including:

  1. A program for keeping existing PWS facilities in operation during construction of additional facilities to minimize interruption of service.
  2. The type and design of chemical feed systems and grades of chemicals to be used. (Example: SDS, feed system equipment specifications)
  3. All paints, coatings, or other materials which will come into contact with drinking water during and after construction. (Example: SDS or other information pertaining to NSF certification)
  4. All procedures for flushing, disinfecting, and testing (as needed), prior to placing the project in service. Disposal of disinfectant water shall be consistent with the requirements of the Clean Streams Law.