1. (a) Any supplier of water proposing to construct a back-up large production well shall meet the requirements of Env-Wq 403.34.

2. (b) In addition to the requirements of (a), above, the CWS owner siting the back-up well shall:

   1. (1) Locate the back-up well in accordance with Env-Dw 302.09;
   2. (2) Establish a sanitary protective area for the back-up well in accordance with Env-Dw 302.10;
   3. (3) Develop a wellhead protection area for the back-up well in accordance with Env-Dw 302.11 and Env-Dw 302.22 unless, through prior pumping test data, the water system shows that the zone of contribution of the back-up well is within the wellhead protection area developed for an existing well;
   4. (4) Perform a pumping test of the back-up well in accordance with Env-Dw 302.14 to establish the permitted production volume for the well;
   5. (5) Collect a water quality sample, in accordance with Env-Dw 302.15(d) and (e) within the last 3 hours of the pumping test conducted pursuant to (4), above; and
   6. (6) Submit and obtain approval of a water conservation plan in accordance with Env-Wq 2101.
3. (c) If the CWS has a wellhead protection program, the CWS owner shall include the wellhead protection area developed for the back-up well in its wellhead protection program.
4. (d) If the CWS does not have a wellhead protection program, the CWS owner shall develop and implement a wellhead protection program in accordance with Env-Dw 302.25 for the back-up well and the existing well(s) for which the back-up well is being provided.

5. (e) Prior to approval of the back-up well, the CWS owner shall submit a report that describes and provides supporting documentation for the following:

   1. (1) Information pursuant to the requirements in (a) and (b), above;
   2. (2) The pumping test performed and the proposed permitted production volume for the back-up well;
   3. (3) Results of water quality sampling demonstrating that the back-up well will meet all water quality standards required by Env-Dw 707 through 713;

   4. (4) A site map depicting the following:

      1. a. The back-up well location;
      2. b. The sanitary protective area;
      3. c. The wellhead protection area; and
      4. d. The location of the back-up well in relation to surface water, wetlands, and the 100-year flood zone;
   5. (5) The wellhead protection program developed for the CWS; and
   6. (6) A copy of the well completion report for the back-up well, filed in accordance with We 800, that demonstrates compliance with the well construction criteria of Env-Dw 302.26.

Source. (See Revision Notes #1 and #2 at part heading for Env-Dw 302) #11061, eff 4-1-16