3.9 Depth of Cover

The minimum pipe cover is 3 feet for water mains smaller than 12 inches and 4 feet for water mains 12 inches and larger. Deviations may be allowed on a case-by-case basis subject to PUD approval. The cover shall not exceed 6 feet unless greater depth is required to avoid other utilities or obstructions, or where special circumstances arise and greater cover is approved by the PUD.