Ohio Revised Code Title XV. Conservation of Natural Resources § 1522.19

(A) The chief of the division of water resources may require a permittee that has been issued a permit under section 1522.12 of the Revised Code to decrease its withdrawal and submit a revised ground water model under section 1522.124 of the Revised Code if either of the following applies:

(B) If so required under division (A) of this section, the permittee shall submit the revised ground water modeling using additional data that reflects the permittee's impact on ground water. Based upon the revised ground water modeling and additional data, the chief may amend the permit to decrease the withdrawal or establish a revised projected cone of depression and amend the permit accordingly.

(C) A permittee may request the chief to amend a permit issued under section 1522.12 of the Revised Code when another ground water user affects or has the potential to affect the projected cone of depression. The permittee shall submit with the request a revised ground water model using additional data that reflects the other ground water user's impact on ground water. Based upon the revised ground water model and additional data, the chief may establish a revised projected cone of depression and amend the permit accordingly.