A.    Plats and surveys shall be prepared and certified by a registered land surveyor who shall be responsible for the required monumentation.

    B.    Improvements shall be constructed in accordance with plans and specifications prepared by a licensed engineer or land surveyor and approved by the commission. Unless otherwise specified in the subdivision agreement, the licensed person who prepared the improvement drawings shall be responsible for the stakeout, inspection and certification of completion in accordance therewith. If the person specified in the subdivision improvement agreement is not able to perform this duty, he shall give notice by registered mail to the department and like notice to any person, firm or corporation guaranteeing the installation of the improvements. No work on such improvements shall commence until a subdivision improvement agreement has been duly executed. (Prior code § 28-61)