NR 110.15(5)(i)1.g.g. Nonpotable water line—blue with 15 centimeter (6 inch) red bands spaced 76 centimeters (30 inches) apart. NR 110.15(5)(i)2.2. In addition to the color code, each pipe shall be adequately labeled with a minimum of 2 labels in each room, crawl space or compartment. NR 110.15(5)(i)3.3. Existing treatment facilities which do not comply with the provisions of this subsection shall bring the facility into compliance at the time of any major upgrading or expansion of the facility. NR 110.15(5)(j)(j) Valve identification. All valves shall be identified in the plans and specifications and labeled during construction. NR 110.15(5)(k)(k) Operational considerations. All necessary tools and accessories for the facility operator’s use shall be provided. Storage space and a work area shall also be provided. All equipment shall be located as to provide sufficient clearance for proper and convenient maintenance. All tanks, wet wells, channels and pipe systems shall be equipped with drains, valves, or sumps to facilitate draining for maintenance and repair. NR 110.15(5)(L)(L) Laboratory space and equipment. A treatment facility owner shall either include a laboratory for making the necessary analytical determinations and operating control tests, or contract with a neighboring facility or independent laboratory to have the analytical and operating control tests done. NR 110.15(5)(m)(m) Floor slope. Floor surfaces shall be sloped adequately to a point of drainage. NR 110.15(5)(n)(n) Erosion control during construction. Effective site erosion control shall be provided during construction. Project specifications shall detail erosion control methods. Manner of spoil material disposal shall also be detailed. NR 110.15(5)(o)(o) Construction materials. Materials shall be selected that are compatible with the wastewater characteristics. Dissimilar metals should be avoided to minimize galvanic action. NR 110.15(5)(p)(p) Sanitary facilities. Toilet, shower, lavatory, and locker facilities should be provided in sufficient numbers and convenient locations to serve the expected facility personnel. Toilet, shower, and lavatory facilities shall be provided in the following instances: NR 110.15(5)(p)1.1. Any sewage treatment facility equipped with laboratory facilities; NR 110.15(5)(p)2.2. Any sewage treatment facility equipped with a potable water supply; or NR 110.15(5)(p)3.3. Any sewage treatment facility which has one or more full time operating personnel. NR 110.15(5)(q)1.1. Sewage treatment facilities shall be enclosed with a fence to discourage entry of animals or unauthorized persons. NR 110.15(5)(q)2.2. Hand rails shall be installed around all treatment tanks and in other areas of the facility where the potential of falling exists. NR 110.15(5)(q)3.3. The department recommends the following safety measure be considered in the design of wastewater treatment facilities: NR 110.15(5)(q)3.c.c. Provision of protective clothing and equipment such as gas masks, goggles, gloves, hard hats, and safety harness; NR 110.15(5)(q)4.4. The safety and health rules set forth in ch. SPS 332, and appropriate federal and local safety codes shall be adhered to in the operation of wastewater treatment plants. NR 110.15(6)(a)(a) Potable supply. Any sewage treatment facility which has a laboratory shall be provided with a potable water supply. NR 110.15(6)(b)(b) Plumbing. Sewage treatment facility plumbing systems shall be designed in accordance with ch. SPS 382.