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Pre-Design Conference: Significant Drinking Water Issues

How much drinking water will your plant use for facility processes and employee consumptive use?

Estimate the peak day demand (gpm) and annual total demand (acre-feet).

What are the fire suppression requirements for your plant?

For example, 2,000 gpm for a 2-hour duration.

Will your plant obtain drinking water from an existing municipality?

If yes, name the municipality.

Will your plant have to develop a new well to provide drinking water to your plant?

If yes, the “Outline of Well Approval Process” on the attached sheet must be followed.

Do you have plans to insure no cross-connections occur?

Back flow prevention.

Outline of Well Approval Process [R309-515-6(5)]

  1. Well drilling shall not commence until both of the following items are submitted and receive a favorable review:
    1. a Preliminary Evaluation Report on source protection issues as required by R309-600-13(2); and,
    2. engineering plans and specifications governing the well drilling.
  2. Grouting Inspection During Well Construction: An engineer from the Division, or the appropriate district engineer of the Department of Environmental Quality, or an authorized representative of the State Engineer’s Office shall be contacted at least three days before the anticipated beginning of the well grouting procedure (see R309-515-6(6)(i)). The well grouting procedure shall be witnessed by one of these individuals or their designee.
  3. After completion of the well drilling the following information shall be submitted and receive a favorable review before water from the well can be introduced into a public water system:
    1. a copy of the “Report of Well Driller” as required by the State Engineer’s Office which is complete in all aspects and has been stamped as received by the same;
    2. a copy of the letter from the engineer described in R309-515-6(5)(b) above, indicating inspection and certification that the well was grouted in accordance with the well drilling specifications and the requirements of this rule;
    3. a copy of the pump test including the yield vs. drawdown test as described in R309-515-6(10)(b);
    4. a copy of the chemical analyses required by R309-515-4(5);
    5. documentation indicating that the water system owner has a right to divert water for domestic or municipal purposes from the well source;
    6. a copy of complete plans and specifications covering the well equipment and diversion piping necessary to introduce the water from the well into the distribution system; and,
    7. a bacteriological analysis of water obtained from the well after installation of permanent equipment, disinfection and flushing.
  4. A Operating Permit shall be obtained in accordance with R309-500-9 before any water from the well is introduced into a public water system.
  5. The public water supplier shall submit a DWSP Plan in accordance with R309-600-7(1) for any new ground-water source of drinking water within one year after the date of DDW’s concurrence letter. In developing this DWSP Plan, PWSs shall refine the information in the PER by applying any new, as-constructed characteristics of the source (i.e., pumping rate, aquifer test, etc.).

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