SPS 382.36 Note Note: Sections SPS 362.1101 to 362.1110 specify that for floor or ground surface inlets when placed within an identifiable accessible route, openings in the floor or ground surface shall be of a size that does not permit the passage of a ½-inch sphere. Also, it states that grates having elongated openings be placed so that the longest dimension is perpendicular to the dominant direction of travel.
SPS 382.36(9)(b)3.b. b. Floor or ground surface inlets. Openings in the floor or ground surface shall be of a size that prohibits the entrapment of wheeled vehicles, wheelchairs or pedestrians within the grate openings.
SPS 382.36(9)(b)3.c. c. Grates on horizontal pipes. Grates shall be provided on horizontal inlets greater than 6 inches in diameter. The grates shall be placed so that the rods or bars are not more than 3 inches downstream of the inlet. Rods or bars shall be spaced so that the openings do not permit the passage of a 6-inch sphere.
SPS 382.36 Note Note: See ch. SPS 382 Appendix for further explanatory material.
SPS 382.36(9)(c) (c) Subsurface areas of 50 square feet or less. Other than stairwells, all subsurface areas not exceeding 50 square feet and exposed to the weather, shall comply with one of the following:
SPS 382.36(9)(c)1. 1. Drain to foundation drains through a minimum 2-inch diameter pipe or a through a continuous layer of washed stone aggregate.
SPS 382.36(9)(c)2. 2. Drain to the storm building drain, storm subdrain or storm sewer through a minimum 3-inch diameter pipe.
SPS 382.36(9)(d) (d) Subsurface areas of more than 50 square feet and stairwells. An area drain shall be provided in subsurface areas greater than 50 square feet and in all stairwells exposed to the weather. The area drain shall comply with all of the following:
SPS 382.36(9)(d)1. 1. Drain to the storm building drain, storm subdrain or storm sewer.
SPS 382.36(9)(d)2. 2. The fixture drain shall have a minimum 3-inch inside diameter and may not discharge into a subsoil or foundation drain.
SPS 382.36(10) (10)Roof drains.
SPS 382.36(10)(a)(a) General roofs. Roof drains shall be equipped with strainers extending not less than 4 inches above the surface of the roof immediately adjacent to the roof drain. Strainers shall have an available inlet area above the roof of not less than 1.5 times the area of the conductor to which the drain connects.
SPS 382.36(10)(b) (b) Flat decks. Roof drain strainers used on sun decks, open parking decks and similar areas shall be of the flat surface type, shall be level with the deck and shall have an available inlet area of not less than 2 times the area of the conductor to which the drain connects.
SPS 382.36(11) (11)Secondary roof drains.
SPS 382.36(11)(a)(a) Sizing. When secondary roof drain systems are installed the secondary system shall be sized and installed in accordance with the requirements in this section.
SPS 382.36(11)(b) (b) Prohibited connection. Secondary roof drain systems may not be connected to primary roof drain systems.
SPS 382.36(11)(c) (c) Discharge. All secondary roof drain systems shall discharge in accordance with Table 382.38–1.
SPS 382.36(12) (12)Traps and vents.
SPS 382.36(12)(a)1.1. Traps are required for interior drain inlets receiving clearwater.
SPS 382.36(12)(a)2. 2. Except for exterior loading dock drains, traps are required for exterior drain inlets located within 10 feet of an air inlet, door or openable window.
SPS 382.36(12)(a)3. 3. More than one drain inlet may discharge to the same trap.
SPS 382.36(12)(a)4. 4. A foundation drain that discharges by gravity to a storm sewer shall be trapped. The trap shall be provided with cleanouts.
SPS 382.36(12)(b) (b) Vents.
SPS 382.36(12)(b)1.1. A trap receiving clearwater shall be vented in accordance with s. SPS 382.31. Vent piping for a clearwater drain system may not be connected to a vent system serving a sanitary drain system or chemical waste system.
SPS 382.36(12)(b)2.a.a. Vents serving a solid covered sump shall terminate a minimum of one inch above finished floor.
SPS 382.36(12)(b)2.b. b. Sump vents shall be sized as per Table 382.31-4.
SPS 382.36(13) (13)Operation and maintenance.
SPS 382.36(13)(a)(a) Plan. An operation and maintenance plan shall be implemented for all stormwater plumbing systems for drainage areas of one or more acres that are installed on or after December 1, 2004.
SPS 382.36(13)(b) (b) Plan information. An operation and maintenance plan as required in par. (a) shall include at least all of the following information, applicable to the system:
SPS 382.36(13)(b)1. 1. Accumulated solids or byproduct removal requirements.
SPS 382.36(13)(b)2. 2. Identification of safety hazards.
SPS 382.36(13)(b)3. 3. Cleaning and inspection schedule.
SPS 382.36(13)(b)4. 4. Inspection and maintenance checklist, including at least the following items:
SPS 382.36(13)(b)4.b. b. Disinfection units.
SPS 382.36(13)(b)4.c. c. Sedimentation chambers.
SPS 382.36(13)(b)4.d. d. Detention devices.
SPS 382.36(13)(b)4.e. e. Infiltration systems.
SPS 382.36(13)(b)5. 5. Start up and shutdown procedures.
SPS 382.36(13)(b)6. 6. Vector control requirements.
SPS 382.36(13)(b)7. 7. A contingency plan in the event of system failure.
SPS 382.36(13)(c) (c) Plan location. The operation and maintenance plan shall remain onsite and be available for inspection when requested by the department.
SPS 382.36(13)(d) (d) Record of maintenance. When requested the owner shall make available for inspection all maintenance records to the department or agent for the life of the system.
SPS 382.36 History History: Cr. Register, February, 1985, No. 350, eff. 3-1-85; r. and recr. (3) (a) and (b) 1., (c) 1. and (11) (a) 4., cr. (3) (c) 3., Register, May, 1988, No. 389, eff. 6-1-88; renum. (13) (a) and (b) to be (b) and (c) and am. (b) 1., cr. (3) (b) 3. and (13) (a), r. (3) (c) 3. and (13) (intro.), Register, August, 1991, No. 428, eff. 9-1-91; reprinted to correct error in (5) (e) 2., Register, October, 1991, No. 430; am. (3) (b) 1., (c) 1. a., (13) (b) 1. and (c), cr. (11) (a) 5., Register, February, 1994, No. 458, eff. 3-1-94; r. and recr. (11) (a) 2. and 5., Register, April, 1998, No. 508, eff. 5-1-98; renum. and am. (3) (b) 3. a. to be (3) (b) 3. and (3) (b) 3. b. to be (3) (b) 4., Register, April, 2000, No. 532, eff. 7-1-00; am. (3) (b) 3., (4) (a), (5) (a) and (6) (a), cr. (3) (b) 5. and Table 82.36-4a, Register, December, 2000, No. 540, eff. 1-1-01; CR 02-002: r. and recr. (3), (11) (a) 3., (13) (a) 2., (15) (a) and (b), am. (5) (e) (intro.), (10), (12), (14) and Table 82.36-4 Register April 2003 No. 568, eff. 5-1-03; CR 04-035: r. and recr. Register November 2004 No. 587, eff. 12-1-04; CR 07-069: cr. (7) (d) 10. Register February 2008 No. 626, eff. 3-1-08; CR 08-055: am. (4) (b) 3. and (8) (a) 4., r. and recr. (11) Register February 2009 No. 638, eff. 3-1-09; correction in (2), (3) (c), (4) (a), (6) (a) 1. b., 2. b., 3., (c) 1., 2., (d), (7) (c) 2., (d) 2., 4., 5., 6., 7., 10. a., (9) (b), (11), (c), (12) (b) 1., 2. b. made under s. 13.92 (4) (b) 7., Stats., Register December 2011 No. 672.
SPS 382.365 SPS 382.365Stormwater and clearwater subsurface infiltration plumbing systems.
SPS 382.365(1) (1)Scope. The provisions of this section set forth the requirements for the design, installation and maintenance of stormwater and clearwater subsurface infiltration plumbing systems serving building sites.
SPS 382.365 Note Note: The department of natural resources has registration requirements for class V injection wells. See ch. SPS 382 Appendix for further explanatory material.
SPS 382.365(2) (2)Site and soil evaluation.
SPS 382.365(2)(a)(a) Site evaluation. A site evaluation shall be conducted in accordance with the methods and standards as provided in s. SPS 385.40 (3) (a).
SPS 382.365(2)(b) (b) Soil evaluation.
SPS 382.365(2)(b)1.1. A soil evaluation shall be conducted in accordance with the methods and standards as provided in s. SPS 385.30 (1) (c).
SPS 382.365(2)(b)2. 2. Individuals qualified to conduct soil evaluation under this subsection shall be an individual that maintains either a registration as provided in s. SPS 305.33 or a license as provided in ch. GHSS 4.
SPS 382.365(3) (3)Infiltration system design.
SPS 382.365(3)(a)(a) Influent quality. For stormwater and clearwater infiltration plumbing systems, the influent quality shall comply with the requirements in Table 382.70-1 for subsurface infiltration and irrigation.
SPS 382.365(3)(b) (b) In situ soil requirements.
SPS 382.365(3)(b)1.1. Except as provided in subd. 2., the minimum depth of suitable in situ soil for infiltration systems shall be as specified in Table 382.365-1 to separate the system from the highest groundwater elevation or bedrock. When groundwater mounding calculations affect the depth to seasonal groundwater, the depth of suitable soil shall be measured to the calculated elevation of mounded groundwater.
SPS 382.365(3)(b)2. 2. For roof runoff or where treatment has afforded an equivalent level of water quality, the depth of in situ soil shall be no less than one foot of materials finer than coarse sand.
SPS 382.365 Note Note: See ch. SPS 382 Appendix for representative water quality levels. - See PDF for table PDF - See PDF for table PDF
SPS 382.365(3)(c) (c) Hydraulic application rates. The maximum hydraulic application rate for stormwater and clearwater subsurface infiltration plumbing systems shall be in accordance with one of the following methods.
SPS 382.365(3)(c)1. 1. The maximum hydraulic application rate shall be determined by soil analysis in accordance with sub. (2) (b) and Table 382.365-2.
SPS 382.365(3)(c)2. 2. The maximum hydraulic application rate shall be determined by field measurement using a nationally-accepted method and the correction factor as determined using Table 382.365-3. To determine the maximum hydraulic application rate, the measured infiltration rate at the infiltrative surface shall be divided by the correction factor as listed in Table 382.365-3. - See PDF for table PDF
SPS 382.365 Note a Use sandy loam design infiltration rates for fine sand, loamy fine sand, very fine sand, and loamy fine sand soil textures.
SPS 382.365 Note b Infiltration rates represent the lowest value for each textural class presented; based on Rawls et al., 1998 [Use of Soil Texture, Bulk Density and Slope of Water Retention Curve to Predict Saturated Hydraulic Conductivity, ASAE, Vol. 41(2), pp. 983-988].
SPS 382.365 Note c Infiltration rate is an average, based on Rawls et al., 1982 (Estimation of Soil Water Properties, Transactions of the American Society of Agricultural Engineers Vol. 25, No. 5 pp. 1316 –1320 and 1328) and Clapp & Hornberger, 1978 (Empirical equations for some hydraulic properties. Water Resources Research 14:601-604). - See PDF for table PDF - See PDF for table PDF
SPS 382.365 Note a Ratio is determined by dividing the design infiltration rate from Table 382.365-2 for the textural classification at the bottom of the infiltration device by the design infiltration rate from Table 382.365-3 for the textural classification of the least permeable soil horizon. The least permeable soil horizon used for the ratio should be within five feet of the bottom of the device or to the depth of the limiting layer.
SPS 382.365(3)(d) (d) Groundwater mounding. Groundwater mounding consideration shall be included in the design of any stormwater and clearwater subsurface infiltration plumbing system that has a width that exceeds 15 feet and a depth to the estimated highest groundwater elevation.
SPS 382.365 Note Note: An acceptable model is provided by the USGS, webpage: http://water.usgs.gov/ogw/techniques.html.
SPS 382.365(3)(e) (e) Drain down time.
SPS 382.365(3)(e)1.1. Stormwater and clearwater subsurface infiltration plumbing systems shall be designed to drain within 72 hours after a storm event.
SPS 382.365(3)(e)2. 2. By design, ground surface ponding shall drain within 24 hours after a storm event.
SPS 382.365(3)(f) (f) Setbacks.
SPS 382.365(3)(f)1.1. Stormwater and clearwater subsurface infiltration plumbing systems shall be located as provided in Table 382.365-4, except for irrigation systems. - See PDF for table PDF
SPS 382.365(3)(f)2. 2. All stormwater and clearwater subsurface infiltration plumbing systems shall be separated from water wells by the applicable separation distances contained in chs. NR 811 and 812 or as otherwise approved by the department of natural resources.
SPS 382.365 Note Note: See ch. SPS 382 Appendix A-382.30 (11) (d) for material reprinted from ss. NR 811.12 (5) (d) and 812.08. Section NR 811.12 (5) (d) or 812.08 may have additional setback requirements.
SPS 382.365(4) (4)Installation.
SPS 382.365(4)(a)(a) Orientation. Except for subsurface irrigation systems, all of the following shall apply:
SPS 382.365(4)(a)1. 1. The longest dimension of a stormwater or clearwater subsurface infiltration plumbing system consisting in part of in situ soil shall be oriented along the surface contour of the site location, unless otherwise approved by the department.
SPS 382.365(4)(a)2. 2. The infiltrative surface of a stormwater or clearwater subsurface infiltration plumbing system consisting in part of in situ soil and located below the surface of the original grade shall be level.
SPS 382.365(4)(b) (b) Other requirements.
SPS 382.365(4)(b)1.1. A stormwater or clearwater subsurface infiltration plumbing system consisting in part of in situ soil may not be installed if the soil is frozen at the infiltrative surface.
SPS 382.365(4)(b)2. 2. Snow cover shall be removed before excavating or installing a stormwater or clearwater system component consisting in part of in situ soil.
SPS 382.365(4)(b)3. 3. For a stormwater or clearwater subsurface infiltration plumbing system consisting in part of in situ soil, the soil moisture content shall be evaluated immediately prior to installation of the component. If the soil evaluation at the infiltrative surface results in the sample capable of being rolled into a ¼ –inch wire, the installation may not proceed.
SPS 382.365 Note Note: To accomplish a field test for soil wetness, a soil sample the size of one's palm may be rolled to form at least a ¼-inch wire.
SPS 382.365(4)(b)4. 4. All vessels and pipes of a stormwater or clearwater subsurface infiltration plumbing system shall be bedded in accordance with a product approval under s. SPS 384.10 or a plan approval under s. SPS 382.20.
SPS 382.365(5) (5)Operation and maintenance.
SPS 382.365(5)(a)(a) General. Operation and maintenance shall be performed in accordance with the operation and maintenance plan submitted with the stormwater and clearwater subsurface infiltration plumbing system design and s. SPS 382.36 (13), where applicable.
SPS 382.365(5)(b) (b) Prohibited substance.
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.