When the applicant has completed the required
improvements specified in these regulations, the applicant shall send,
by registered mail, to the Town Clerk and the Planning Board, a written
statement that the required improvements have been completed, such
statement to contain the address of the applicant. Such statement
shall be accompanied by two copies of a certificate by a designer,
engineer, or land surveyor, as the case is appropriate, that the work
has been completed to the extent described in the certificate and
conforms in all details with the approved subdivision plan and these
rules and regulations; or, if it does not so conform, such nonconformity
shall be accurately described in the certificate. No bond, deposit,
or covenant, or any portion or part thereof, shall be released by
the Planning Board until it has been established that the work required
has been completed in accordance with the approved plans and has been
inspected and found satisfactory according to the standards of the
Planning Board.