Section 11-58 - Sewage System Standards (a) If sewerage system services are to be provided by a second person, a letter of verification from the system manager stating that they are capable of handling added organic and/or hydraulic loads shall be provided by the owner/operator of the system.
(b) A mobile home park or campground sewerage system, treatment works and disposal system shall comply with Part A, B, C, and/or D of Chapter 11 except as follows: - (i) Mobile home park sewerage systems, treatment works and disposal systems shall be designed on the basis of not less than 350 gallons per site per day. Camp ground sewerage systems, treatment works and disposal systems shall be designed on the basis of not less than 100 gallons per site per day for all sewered sites or 75 gallons per site per day for all unsewered sites.
- (ii) Sanitary sewers shall not be smaller than six inches in diameter. They shall be installed at a slope equal to or greater than 0.6 feet per 100 feet.
- (iii) Not more than two mobile homes or campground sites shall be served by a sanitary sewer service connection pipe of a least four (4) inches in diameter, provided the main branch of the service pipe is served by a cleanout and provided it is not longer than fifty (50) feet. It shall be installed at a minimum slope of 1/4 inch per foot. The riser portion of the service connection pipe shall be constructed of cast iron or schedule 40 plastic pipe. The riser shall be terminated at least four (4) inches above finished grade and shall not be located closer than five (5) feet from a potable water service riser. The service connection pipe shall connect to the sewerage system at a maximum 45-degree bend in the direction of sewage flow.
- (iv) Not more than one mobile home shall be served by a sanitary sewer service riser pipe. The riser shall be located so as to minimize the length of pipe required to connect the mobile home drain. The riser pipe shall be capped or plugged when not in use.
- (v) The connection of the mobile home drain to the riser pipe shall be sealed.
- (vi) If sewer service is provided to sites in a campground, the sanitary sewer service connection pipe shall comply with subsections (iii) and (iv) above.
- (vii) Service connection pipes for campgrounds shall be trapped below the frost line.
020-11 Wyo. Code R. § 11-58