Minnesota Administrative Rules

7150.0450 REPORTING AND RECORD KEEPING.

Subpart 1.

General.

Owners and operators of underground storage-tank systems must cooperate fully with inspections, monitoring, and testing conducted by the agency, as well as requests for document submission, testing, and monitoring by the owner or operator.

Subp. 2.

Reporting.

Owners and operators must submit the following information to the commissioner within the applicable time frames:

A.

notification and certification for all underground storage-tank systems under part 7150.0090, including cathodic protection test reports;

B.

notification of the discovery of an abandoned tank under Minnesota Statutes, section 116.48, subdivision 2;

C.

reports of all releases under part 7150.0345 and Minnesota Statutes, section 115.061, including suspected releases, spills and overfills, and confirmed releases;

D.

information generated in the course of taking corrective action as defined in Minnesota Statutes, section 115C.02, subdivision 4;

E.

notification before permanent closure or change in status to a nonregulated substance under part 7150.0410; and

F.

inspection reports for internally lined tanks under part 7150.0215, subpart 4, items A and B.

Subp. 3.

Record retention.

Owners and operators must maintain the following information in a legible manner for the specified time frame:

A.

the commissioner's determination under part 7150.0205, subpart 1, item B, subitem (5); subpart 3, item A, subitem (3); or subpart 5, item B, subitem (1), that alternative equipment for corrosion protection or spill and overfill prevention may be used must be maintained for the life of the UST system;

B.

for underground storage-tank systems using cathodic protection, the following records of the operation of the cathodic protection must be maintained:

(1)

the results of the last three tests of sacrificial-anode systems required by part 7150.0215, subpart 2, item A;

(2)

the results of rectifier readings for impressed-current systems required by part 7150.0215, subpart 3, item A, for at least three years; and

(3)

the results of the last three tests of impressed-current systems required by part 7150.0215, subpart 3, item B;

C.

documentation of repairs for UST systems, including the nature of each repair and results of required integrity testing under part 7150.0250, subpart 2, must be maintained for the life of the UST system;

D.

documentation of compliance with release detection requirements under parts 7150.0300 to 7150.0340, as follows:

(1)

all written performance claims pertaining to any release-detection system used and the manner in which these claims have been justified or tested by the equipment manufacturer or installer, including documentation of suction piping meeting the design requirements of part 7150.0300, subpart 6, item B, subitem (2), must be maintained for as long as the system is being used to comply with the requirements of this chapter;

(2)

the results of any testing or monitoring must be maintained for at least five years, including:

(a)

monthly statistical inventory reconciliation results according to part 7150.0330, subpart 6a;

(b)

monthly manual tank gauging according to part 7150.0330, subpart 3;

(c)

tank tightness testing according to part 7150.0330, subpart 4;

(d)

monthly automatic tank gauging according to part 7150.0330, subpart 5;

(e)

monthly interstitial monitoring of secondary-containment tanks according to part 7150.0330, subpart 6, item A;

(f)

monthly results of an alternative tank-release-detection method according to part 7150.0330, subpart 7;

(g)

annual testing of any line-leak detector according to part 7150.0340, subpart 2;

(h)

annual line tightness testing according to part 7150.0340, subpart 3, item A;

(i)

monthly line tightness testing according to part 7150.0340, subpart 3, item B;

(j)

monthly interstitial monitoring of secondary-containment piping according to part 7150.0340, subpart 4;

(k)

monthly results of an alternative method for detecting releases in piping according to part 7150.0340, subpart 5; and

(l)

annual testing of any automatic leak-sensing device in any secondarily contained tank according to part 7150.0330, subpart 6, item C, or submersible pump sump according to part 7150.0340, subpart 4, item C;

(3)

written documentation of all calibration, maintenance, and repair of release detection equipment permanently located on site must be maintained for at least five years after the servicing work is completed. Any schedules of required calibration and maintenance provided by the release detection equipment manufacturer must be retained as long as the system is being used to comply with the requirements of this chapter; and

(4)

documentation of the commissioner's approval of alternate release-detection methods under part 7150.0330, subpart 7, or 7150.0340, subpart 5, must be maintained for as long as the methods are being used to comply with the requirements of this chapter;

E.

documentation that shows that testing wastes generated during sump and spill-bucket testing have been disposed of properly in accordance with state and local regulations must be maintained for at least five years after the testing;

F.

results of the site assessment conducted at permanent closure or change in status to a nonregulated substance under part 7150.0345 and any other records that are capable of demonstrating compliance with closure requirements under parts 7150.0400 and 7150.0410 must be maintained for at least three years after completion of permanent closure or change in status in one of the following ways:

(1)

at the facility by the owners and operators who took the UST system out of service;

(2)

at the facility by the current owners and operators of the UST system site; or

(3)

by mailing these records to the commissioner if the records cannot be maintained at the closed facility;

G.

certification that the facility's class A operator and class B operator have passed the operator examination requirements or documentation of current certification in another state if the commissioner has approved a waiver of the agency-administered examination must be kept until closure of the facility or until the class A or B operator is no longer employed at the facility, whichever occurs first;

H.

records of monthly or weekly on-site presence of the class B operator according to part 7150.0445, subpart 3, must be kept for at least five years;

I.

records that document that the class C operator has received the training required in part 7150.0445, subpart 4, including the date of training, who performed the training, and the contents of the training must be kept until closure of the facility or until the class C operator is no longer employed at the facility, whichever occurs first;

J.

results of the following testing, inspections, and monitoring must be maintained for at least five years:

(1)

periodic operation and maintenance inspections according to part 7150.0216, subpart 2;

(2)

leak-detection equipment inspections and testing according to part 7150.0216, subpart 3;

(3)

testing or monitoring spill buckets or containment sumps according to part 7150.0216, subpart 4;

(4)

overfill-prevention equipment inspection and testing according to part 7150.0216, subpart 5; and

(5)

any other documentation of compliance with part 7150.0216; and

K.

documentation that the components of the UST system are compatible with the substance stored according to part 7150.0100, subpart 9, must be maintained for the life of the UST system.

Subp. 4.

Record location.

Owners and operators must maintain the records required:

A.

at the underground storage tank site where the records are immediately available for inspection by the commissioner; or

B.

at a readily available alternative site, in which case the records must be immediately submitted to the commissioner upon request.

Statutory Authority:

MS s 116.49

History:

32 SR 1751; 34 SR 1610; 43 SR 1253

Published Electronically:

June 6, 2019