No blasting shall be allowed unless permitted by the Director of Community Development or his designee. Work shall be so conducted as not to interfere with the existing utilities, water mains, sewer lines, gas pipes or electrical conduits or the service connections thereof, and in case of injury to any such utility, it shall be the duty of the applicant, at its own expense, to properly repair or replace the same. The applicant shall not at any time come closer than three feet to any trunk line water pipe without the permission of the Director of Community Development, the Township Engineer, or his designee. Such pipe shall be protected or temporarily supported as directed by the Director of Community Development or his designee. Wherever the construction work passes under a service line of water, sewer lines, gas pipes, electrical conduits or the service connections thereof, the applicant shall, where the Engineer shall deem necessary, cause the same to be temporarily supported as directed pursuant to current construction practices.