An individual certified by the Department under this chapter shall: Maintain knowledge of COMAR 26.10.01—26.10.12 and 26.10.16 and all documents incorporated by reference; Adhere to equipment manufacturers’ instructions, accepted industry standards, and applicable industry codes of practice when performing UST system installation, repair, upgrade, closure, change-in-service, precision tightness testing, other tightness testing, or inspection activities; Perform work so that there is no spill, release, or discharge of regulated substances or contamination of soil, surface water, or groundwater caused by regulated substances from a UST system or regulated substance storage facility; Certify to an owner or an operator of a UST system that a UST system installation, upgrade, repair, closure, change-in-service, or inspection is complete only when the activity conducted by the individual complies with COMAR 26.10.01—26.10.12 and 26.10.16; Complete and submit to the Department a form provided by the Department that certifies a UST system installation, closure, change-in-service, or inspection activity conducted by the individual meets the requirements of COMAR 26.10.01—26.10.12 and 26.10.16; Place the individual’s signature and Department issued certification number on documentation concerning an installation, upgrade, repair, closure, change-in-service, or inspection of a UST system or component of a UST system only if: The certified individual directly completed the work or the work was completed under the certified individual’s direct, on-site supervision and control; and The individual had a valid certification issued by the Department to conduct the specific work at the time the work was performed; Maintain complete records of UST system installation, upgrade, repair, closure, change-in-service, and inspection activities that the certified individual was directly involved with for a minimum of 5 years; and Upon request by the Department, provide proof of the individual’s certification for the UST system services being provided.