Section 33.38. Sump construction.

 

(1)   General. Except as provided in sub. (2) :

(a) A sump that is part of a mixing and loading pad, or part of a portland cement concrete secondary containment structure, shall be constructed of portland cement concrete and shall meet the standards specified in chapters 5 and 6 of the Wisconsin Minimum Design and Construction Standards for Concrete Mixing and Loading Pads and Secondary Containment Structures (February 2005).

(b) A sump shall have a capacity of not more [than] 50 gallons.

(c) A sump may not be more than 2 feet deep, or have a depth that exceeds its shortest width.

(d) The walls and floors of a sump shall be at least as thick, at every point, as the mixing and loading pad or secondary containment structure floor that drains to the sump.

(e) A sump that is part of a mixing or loading pad shall form part of a continuous surface, having an area of at least 15 feet by 15 feet and a capacity of at least 250 gallons, which is free of construction and control joints.

(f) If a sump is constructed as part of a concrete mixing and loading pad or concrete secondary containment structure, it shall be constructed in a continuous concrete pour with that pad or structure.

(g) No pipes or openings may extend through a sump. This does not prohibit a surface trough or rim indentation needed to accommodate a pipe or hose connection required under s. ATCP 33.50 .

(h) A sump shall be readily accessible for inspection. Pumps, collection basins or other equipment placed in the sump shall be readily removable, so that all surfaces of the sump can be easily inspected.

(2)   Exemption. Subsection (1) does not apply to a sump that was in service prior to November 1, 2006 if all of the following apply:

(a) The sump is not substantially altered on or after November 1, 2006.

(b) The sump does not receive runoff from any mixing and loading pad or secondary containment structure that is constructed or substantially altered on or after November 1, 2006.

(c) The sump meets construction standards that applied at the time of its construction.

(d) The operator pressure tests any underground piping or conduit connected to the sump to ensure that the piping or conduit is liquid-tight. The operator shall perform a pressure test at least annually and shall keep a written record of the pressure test results.

CR 05-108 : cr. Register October 2006 No. 610 , eff. 11-1-06; CR 14-047 : am. (1) (a) Register May 2015 No. 713 , eff. 6-1-15.

Note

The Wisconsin Minimum Design and Construction Standards for Concrete Mixing and Loading Pads and Secondary Containment Structures (February 2005), written by Professor David W. Kammel, department of biological systems engineering, University of Wisconsin-Extension, is on file with the department and the legislative reference bureau. Copies are available from the department, free of charge, at the following address: Microsoft Windows NT 6.1.7601 Service Pack 1 Department of Agriculture, Trade and Consumer Protection Microsoft Windows NT 6.1.7601 Service Pack 1 Agricultural Resource Management Division Microsoft Windows NT 6.1.7601 Service Pack 1 P.O. Box 8911 Microsoft Windows NT 6.1.7601 Service Pack 1 Madison, WI 53708-8911 Microsoft Windows NT 6.1.7601 Service Pack 1 Phone: [phone] Microsoft Windows NT 6.1.7601 Service Pack 1Web: http://www.datcp.state.wi.us Microsoft Windows NT 6.1.7601 Service Pack 1 The word in brackets was omitted from CR 05-108 . Microsoft Windows NT 6.1.7601 Service Pack 1