(1) The Approving Authority shall maintain records for each system within its jurisdiction and shall keep on file copies of the following documents: (a) applications, plans and specifications for the construction, upgrade or expansion of on-site subsurface sewage disposal systems, including all forms and data submitted by the applicant and Soil Evaluator;(b) disposal system construction permits;(c) as-built plans indicating all modifications to the approved plans subsequent to the issuance of a Disposal System Construction Permit;(d) reports of construction inspections made prior to issuance of a Certificate of Compliance;(e) Certificates of Compliance issued or denied;(f) inspection forms and plans and specifications for the upgrade or expansion of failing or nonconforming on-site subsurface sewage disposal systems in compliance with 310 CMR 15.300 through 15.354;(g) system pumping records;(h) Letters of Non-compliance issued; (i) local enforcement actions taken; and (j) disposal system installers permits.(2) The records listed in 310 CMR 15.030(1) shall be available for review upon request.(3) The Approving Authority shall maintain the records set forth in 310 CMR 15.030(1) until such time as the system is abandoned in accordance with 310 CMR 15.000 or an approved connection is made to a sewer in accordance with 314 CMR 7.00: Sewer System Extension and Connection Permit.