Ariz. Admin. Code § R18-12-271 - Permanent Closure and Change-in-service

A. At least 30 days before beginning permanent closure or a change-in-service under subsection (D), owners and operators shall inform the Department, on a form provided by the Director, of their intent to permanently close or make a change-in-service of an UST. If closure or change-in-service is not completed within six months from the date the Department is informed, the information is deemed to be expired. Owners and operators shall provide the Department with all of the following information:

1. UST system owner name, address, and telephone number;

2. Facility name or company site identifier;

3. Facility street address;

4. Description of each UST system to be closed, including date of installation, total capacity, and construction material;

5. The estimated date of permanent closure or change-in-service;

6. The intended tank service provider.

B. The Department shall waive the 30-day notice described in subsection (A) if the permanent closure is in response to a corrective action conducted under A.R.S. § 49-1005 which was reported under A.R.S. § 49-1004. In addition, the Department may determine another reasonable time period for the notice of intent to permanently close or make a change-in-service to the UST system if any of the following exist:

1. An emergency that threatens human health or the environment,

2. The Department agrees to a request made by an entity operating under an Intergovernmental Agreement with the Department delegating closure inspection authority.

C. Within 15 calendar days of receipt of the information required in subsection (A), the Department shall send the owner or operator an email indicating whether the proposed permanent closure may or may not proceed as described, or whether further information is necessary.

C D. To permanently close or make a change-in-service to an UST system, owners and operators may follow the applicable standards in R18-12-281(P) and shall perform all of the following steps:

1. Develop documented evidence that the contents of the system are a regulated substance. Unless system contents can be documented through delivery receipts or knowledge of process, a waste determination in accordance with R18-8-261(A) shall be performed. If contents are not a regulated substance, they may be subject to hazardous, solid or special waste regulations as follows:

a. If the contents of an UST system are determined to meet the definition of a hazardous waste based upon a waste determination, the contents may be subject to the requirements of A.R.S. §§ 49-901 et seq. and the rules promulgated thereunder;

b. If the contents of an UST system are not a regulated substance and not a hazardous waste, the contents may be subject to the requirements of R18-13-311 and R18-13-312.

2. Drain and flush back into the tank regulated substances from piping and any other ancillary equipment that routinely contains regulated substances. All piping, dispensers, and other ancillary equipment to be closed shall be capped or removed;

3. Empty to the standard set forth in R18-12-270(B) and clean the UST by removing all liquids and accumulated residues. The liquids and accumulated residues which meet the definition of hazardous waste pursuant to A.R.S. § 49-921(5) may be subject to regulation under A.R.S. §§ 49-901 et seq. If the liquids and accumulated residues are not hazardous waste, they may be subject to regulation pursuant to A.R.S. §§ 49-701 et seq;

4. Remove from the ground or fill completely with inert solid materials all tanks permanently taken out-of-operation unless the UST system component is making a change-in-service;

5. Perform the site assessment at closure or change-in-service in accordance with R18-12-272 . The site assessment shall be performed after informing the Department but prior to completion of the permanent closure or change-in-service. If the tank is removed, samples shall be taken at the time of removal.

D E. Owners and operators who permanently close or make a change-in-service of an UST system shall prepare a closure report in a format provided by the Department. The closure report shall be submitted to the Department within 30 days of the completion of closure or change-in-service. The report shall be maintained by the Department for at least three years from the date of receipt as evidenced by the post mark or the date stamped on the document by the Department. The report shall demonstrate compliance with the requirements of this Section and R18-12-272 . In addition, the report shall include all of the following:

1. The name of the facility owner and operator, facility name and address, facility identification number, and a certification statement signed by the UST owner or operator or the authorized agent of the owner or operator that reads: "I hereby certify, under penalty of law, that this submittal and all attachments were prepared under my direction and supervision, and that the information submitted is true, accurate, and complete to the best of my knowledge."

2. Information concerning the required soil sampling, conducted in accordance with R18-12-272, which shall include the rationale for selecting sample types, sample locations, and measurement methods and, for each sample, all of the following: sample location identification number; sample depth; sampling date; date of laboratory analysis; lithology of sample; field soil vapor readings, if obtained; analytical methods used; laboratory results; numerical detection limits; and all sampling quality assurance and quality control results;

3. Information concerning the required water sampling, conducted in accordance with R18-12-280, which shall include, for each sample, all of the following: sample location identification number; sampling date; date of laboratory analysis; laboratory results; analytical methods used; numerical detection limits; and all sampling quality assurance and quality control results;

4. Copies of all original laboratory reports and chain-of-custody forms, and any supporting laboratory documents which discuss any analytical quality assurance and quality control anomalies experienced by the laboratory. The laboratory reports shall include, for each sample, all of the following: analytical methods; sample collection date; extraction date; sample analysis date; laboratory detection limits; and all analytical quality assurance and quality control analyses conducted by the laboratory for or during the analyses of the subject samples;

5. A brief, site-specific narrative description of the sampling quality assurance and quality control program followed in the field in accordance with R18-12-280(B) . Any sampling quality assurance and quality control anomalies shall be discussed in detail. The report shall include a determination as to the validity of the data from a scientific standpoint;

6. A scaled map showing the locations of the tank, piping, and dispensers and the locations of all samples obtained in accordance with R18-12-272.

Notes

Ariz. Admin. Code § R18-12-271

Adopted effective July 30, 1996 (Supp. 96-3). Amended by final rulemaking at 25 A.A.R. 3123, effective 1/1/2020.