Before a class IV cleaning installation is established or before an existing plant is remodeled, complete drawings shall be submitted to the department for examination and approval. The drawings shall be drawn to an indicated scale, give the relative location of dry cleaning building, boiler room, finishing building or department, storage tanks for solvents, pumps, washers, drying tumblers, extractors, filter traps, stills, condensers, piping, and show elevation of the buildings, including lowest floors or pits, tanks, and their fittings and devices. Specifications prescribed by rules promulgated pursuant to this part shall accompany the drawings.