Minn. R. agency 167, ch. 7001, MAJOR FACILITY SUBSTANCE STORAGE PERMITS, pt. 7001.4230

Current through Register Vol. 49, No. 24, December 9, 2024

Part 7001.4230 - RETENTION OF TANK AND SUBSTANCE TRANSMISSION LINE RECORDS

If a substance storage facility is required to obtain a major facility permit under this chapter, the permittee shall retain the following data on file at the facility for the retention times specified for each of the following safeguards that are explicitly required by the terms and conditions of the permit:

A. for each field-erected tank:

(1) external inspection results, for five years;

(2) internal inspection final reports, for the life of the tank;

(3) specifications for the tank floor coating, for the life of the coating;

(4) design specifications, including anode and rectifier placement, for the cathodic protection system, for the life of the system;

(5) record of results of all bimonthly rectifier reading results and annual cathodic protection surveys, for three years;

(6) specifications for the tank gauging system, for the life of the system;

(7) daily gauge readings, for three years;

(8) specifications for the overfill protection system, for the life of the system;

(9) record of results of annual testing or calibration of the gauging and overfill protection systems, for one year;

(10) records of leak testing, including date, method, operator, and results, for three years; and

(11) records of any major tank modifications or repairs, for the life of the tank;

B. for each underground substance transmission line:

(1) information addressing the line segment, including age, material, diameter, location shown on a scaled map, type of service, pressure rating, and any special conditions of service, for the life of the line;

(2) specifications for any leak safeguards, such as pipe coating or wrapping, cathodic protection, double walled, or leak detection system, for the life of the safeguard; and

(3) record of results of inspections and leak tests, including date, method, operator, and results, for three years; and

C. for each secondary containment area: records of visual inspections, for one year.

Unless otherwise addressed in the terms and conditions of the permit, the major facility permittee shall retain all data specified in this part. The permittee shall, upon agency request, make the data available to the agency for viewing and copying.

Minn. R. agency 167, ch. 7001, MAJOR FACILITY SUBSTANCE STORAGE PERMITS, pt. 7001.4230

23 SR 883; 25 SR 556

Statutory Authority: MS s 115.03