1. (a) A withdrawal, return or standing column well shall be located:

   1. (1) As specified in We 602.06 through We 602.12; and
   2. (2) No less than 200 feet from a known active hazardous waste remediation site, a petroleum spill remediation site, and an unlined solid waste landfill, as identified in the department’s remediation and initial response spill sites database.
2. (b) During advancement of the borehole, the licensed contractor shall follow the observation and record keeping requirements of We 602.20.
3. (c) An open-loop geothermal well shall be cased as specified in We 602.21 and We 602.22 or, if a reduced setback is required, as specified in We 602.13 through We 602.17.
4. (d) For system designs with separate return and withdrawal wells, the return water shall be re-injected into the same aquifer as the withdrawal well.

5. (e) For the purposes of (d) above:

   1. (1) Withdrawal water obtained from a bedrock well shall be returned to a bedrock well; and
   2. (2) Withdrawal water obtained from a well constructed in saturated unconsolidated deposits shall be returned to a well constructed in saturated unconsolidated deposits.
6. (f) Return water shall be discharged below the static water level in return wells or below the draw down level in standing column wells.
7. (g) An owner of an open loop geothermal well shall obtain a groundwater discharge permit in accordance with Env-Wq 402.33 through Env-Wq 402.36.

Source. (See Revision Note at chapter heading for We 600) #12083 eff 3-1-17