The installation of all piling shall be subject to controlled inspection. Such inspection shall be performed only by an architect or engineer resident at the site, the inspection of the work may be performed by non-licensed or nonregistered personnel working under the resident architect or engineer who need act only in a supervisory capacity. This exception shall not apply, however, in cases of timber or steel piles driven to end bearing as described in this subchapter. In all cases, an inspector shall be assigned to observe the operations of each rig.
N.J. Admin. Code § 19:6-2.62