Napa County |
Code of Ordinances |
Title 13. WATER, SEWERS AND PUBLIC SERVICES |
Chapter 13.48. DRAINFIELDS |
§ 13.48.020. Location and construction requirements.
A.
All disposal fields shall be constructed such as to meet the following requirements:
Minimum number of leaching lines ..... 2
Maximum length of each line ..... 100 feet
Minimum length of each line ..... 50 feet
Minimum width of trench ..... 18 inches
Minimum depth of trench ..... 30 inches
Minimum spacing between lines:
Six feet or two times trench depth, whichever is greater
Minimum depth of earth cover over lines ..... 12 inches
Minimum filter material under perforated pipe ..... 12 inches
Minimum filter material over perforated pipe ..... 2 inches
B.
Trench bottom and all perforated piping are to be level.
C.
The administrative authority may alter the above specifications when satisfied that such alteration is necessary for the functioning of the proposed system, or will benefit the function of future systems.
(Ord. 1109 § 1 (part), 1996: prior code § 5592)