(A) All service pipes must be placed at least 42 inches below the grade and where the service pipes are laid in gravel or stony ground, the trench must be excavated to a depth of 48 inches, then filled with six inches of loose top soil, the pipe laid and covered with one foot of top soil and the remainder of the trench filled in with material excavated. In refilling trenches, the earth shall be laid in layers not less than four inches in depth and each layer shall be thoroughly tamped so as to prevent after settling. The pavement, flagging and entire surface of the street and gutter shall be restored to as good condition as it was before it was taken up and all rubbish shall be removed immediately after the completion of the work.
(B) No excavation in any street or public place shall be left open overnight unless thoroughly protected by barricades and red lights kept burning at same and any licensed plumber failing to protect his or her work shall be personally liable on his or her bond for all loss and damage occasioned thereby.
(C) Meters must be placed where secure from frost and convenient to be read and the pipes connecting to be joined at each end of the meter by means of a square faced union. Working room must be left all around the meter and a stop or wastecock inserted where the service pipe enters the building.
(`94 Code, § 10-3-8)