Final answer:
The clearance for gray water surge tanks of 75 gallons or less to a structure may be reduced to 5 feet.
Step-by-step explanation:
For gray water surge tanks of 75 gallons or less, the distance or clearance to a structure or building may be reduced to 5 ft. This clearance requirement is typically specified in building codes or regulations that are concerned with ensuring the safety, functionality, and maintenance accessibility around water storage systems. The clearance for gray water surge tanks of 75 gallons or less to a structure may be reduced to 5 feet.