(a) Owners or operators shall identify and designate for each underground storage tank (UST) facility including unmanned facilities, at least one named individual for each class of operator - Class A, Class B, and Class C. All individuals designated as a Class A, B, or C operator shall, at a minimum, be trained and certified in accordance with this subchapter. For the purposes of this subchapter, the terms "Class A operator," "Class B operator," "Class C operator," "certified operator, " or "designated operator" are terms specific to the training requirements of this subchapter. The term "operator" used without these descriptors is the same as the term "operator" used in this chapter generally and as specifically defined in §334.2(75) of this title (relating to Definitions).
  (1) Owners and operators may designate different individuals for each class of operator, or one individual for more than one of the operator classes.
  (2) Any individual designated for more than one operator class shall be trained and certified for each operator class, except that training and certification as a Class B operator also entitles that individual to certification as a Class A operator.
  (3) An individual may be designated as a Class A operator for one or more facilities. An individual may be designated as a Class B operator for one or more, but not to exceed 50 facilities. An individual Class C operator must be specifically trained for each facility.
  (4) During hours of operation, UST facilities must have at least one certified operator (either a Class A, Class B, or Class C operator) present at the UST facility, except when a UST facility is unmanned. A UST facility is considered unmanned when during the normal course of business there is routinely no attendant present at the facility who could respond to alarms or emergencies related to the UST system. (Examples of unmanned UST facilities include, but are not limited to, card lock or card access fueling stations, telecommunication towers or utility transfer stations serviced by emergency generator USTs, and unattended UST systems located at industrial facilities.) Unmanned facilities must have weather resistant signage clearly visible from any dispenser which instructs users with regard to basic safety procedures, provides the customer with a 24-hour telephone contact number monitored by a Class A, B, or C operator for the facility and provides instruction on when to call 911.
(b) The three classes of operators are identified as follows.
  (1) Class A operator.
    (A) Functions. A Class A operator of a UST facility is an individual who typically has primary responsibility for ensuring the proper operation and maintenance of the UST systems, particularly in the capacity of managing resources and personnel necessary to achieve and maintain compliance with all UST regulations.
    (B) Qualifications and training. Class A operators must be trained in and have a general knowledge of the requirements of applicable UST regulations, including, but not limited to registration, system components, product compatibility, spill and overfill prevention, corrosion protection, release detection, testing and inspections, recordkeeping, notification, release reporting and response, temporary and permanent closure, operator training, and financial responsibility.
  (2) Class B operator.
    (A) Functions. A Class B operator of a UST facility is an individual who ensures the implementation of all applicable requirements of these regulations in the field and implements the day-to-day aspects of the operation and maintenance of, and recordkeeping for, UST systems.
    (B) Qualifications and training. Class B operators must be trained in and have detailed knowledge of the requirements of applicable UST regulations, including, but not limited to registration, system components, product compatibility, spill and overfill prevention, corrosion protection, release detection, testing and inspections, recordkeeping, notification, release reporting and response, temporary and permanent closure, operator training and financial responsibility. A UST facility owner or operator may designate as its Class B operator a third party (i.e. an individual who is an independent contractor or consultant and is not affiliated with the facility owner or operator) only if that individual is (in accordance with Chapter 334, Subchapter I and with Chapter 30, Subchapter I of this title (relating to Underground Storage Tank On-Site Supervisor Licensing and Contractor Registration; and Underground Storage Tank On-Site Supervisor Licensing and Contractor Registration, respectively)) also a licensed UST on-site supervisor who holds a current "A" or "A/B" license and who either is, or is employed by, a registered UST contractor. However, designation of an independent or not affiliated Class B operator in this manner does not also entitle that individual to certification as a Class A operator for a facility.
  (3) Class C operator.
    (A) Function. A Class C operator of a UST facility is an individual designated by the UST system owner who typically controls the dispensing of fuel at the facility and is responsible for initial response to alarms, releases, spills, overfills or threats to the public or to the environment.
    (B) Training. Class C operators must be trained in both general and facility-specific emergency response procedures, such as: the operation of emergency shut-off equipment; the initial response procedures following system alarm warnings; the appropriate first response actions to releases, spills, or overfills; and the notification procedures to emergency responders and to the designated Class A and Class B operators of a UST facility.

Source Note: The provisions of this §334.602 adopted to be effective March 17, 2011, 36 TexReg 1675; amended to be effective May 31, 2018, 43 TexReg 3390