In order to confirm that various items and features delineated on plans presented to the Planning Board for approval (or which are otherwise required in connection with the development) are, in fact, constructed in accordance with those plans and/or in accordance with applicable codes and standards, the Planning Board may, at the time of plan approval, require the applicant to establish an appropriate escrow, or other security in addition to the performance guarantee described in §
170-35 herein, acceptable to the Planning Board, which will be used by the Town of Derry as security for retention of appropriate engineers or other consultants to confirm that construction is in conformance with the approved plans and/or applicable codes and standards. The applicant shall reimburse the Town for the cost of such engineers or consultants prior to release of said security. Specific details and procedures concerning construction monitoring requirements are as contained in the "Subdivision Construction Monitoring" and "Off-Site Development Construction Monitoring" Workbooks appended to these regulations.