Texas Natural Resources Code - NAT RES § 91.453. Commission Authorized

(a) On written application, the commission or its designated employee may administratively authorize a person to use a saltwater disposal pit on a temporary emergency basis.

(b) On written application, the commission or its designated employee may administratively authorize a person to use an impervious surface pit in conjunction with a geothermal operation, an underground hydrocarbon storage operation, or an approved saltwater disposal operation.

(c) In cases where it may be conclusively shown that use of a saltwater disposal pit can cause no pollution of surrounding productive agricultural land and no pollution of ground or surface water supplies, either because of the absence of such waters, or due to physical isolation of such waters by naturally occurring impervious barriers, the commission or its designated employee may administratively authorize a person to use a saltwater disposal pit.

(d) An authorization under this section must be in writing and must state the conditions under which any pit may be operated.