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OWTS Rules (250-RICR-150-10-6) November 25, 2018

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OWTS Rules (250-RICR-150-10-6) November 25, 2018 STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS DEPARTMENT OF ENVIRONMENTAL MANAGEMENT Office of Water Resources Rules Establishing Minimum Standards Relating to Location, Design, Construction and Maintenance of Onsite Wastewater Treatment Systems November 25, 2018 AUTHORITY: These rules are adopted in accordance with Part 6, Subchapter 10 pursuant to Chapter 150 Title 250 of the Rhode Island General Laws of 1956, as amended. Table of Contents 6.2 Authority ......................................................................................................................................................................... 1 6.3 Liberal Application ......................................................................................................................................................... 1 6.4 Severability ..................................................................................................................................................................... 1 6.5 Applicability ................................................................................................................................................................... 1 6.6 Administrative Findings ................................................................................................................................................. 2 6.7 Incorporated Materials .................................................................................................................................................... 3 6.8 Definitions ...................................................................................................................................................................... 4 6.9 Prohibitions ................................................................................................................................................................... 11 6.10 Class I, II, III, and IV Licenses ..................................................................................................................................... 12 6.11 Obtaining a Class I, II, III or IV License ...................................................................................................................... 13 6.12 Expiration and Renewal of a Class I, II, III or IV License ........................................................................................... 16 6.13 Disciplinary Action for Class I, II, III and IV Licensees .............................................................................................. 16 6.14 Installer's License .......................................................................................................................................................... 18 6.15 Onsite Wastewater Treatment Systems - General......................................................................................................... 20 6.16 Soil Evaluation .............................................................................................................................................................. 21 6.17 Additional Site Testing ................................................................................................................................................. 26 6.18 OWTS Applications ...................................................................................................................................................... 27 6.19 Required Content of OWTS Submissions .................................................................................................................... 32 6.20 Applications Involving the DEM Freshwater Wetlands Program and the Coastal Resources Management Council .. 35 6.21 Subdivisions .................................................................................................................................................................. 36 6.22 Wastewater Flow .......................................................................................................................................................... 39 6.23 Minimum Setback Distances ........................................................................................................................................ 46 6.24 Subsurface Drains ......................................................................................................................................................... 52 6.25 Building Sewers ............................................................................................................................................................ 52 6.26 Grease Tanks................................................................................................................................................................. 53 6.27 Septic Tanks .................................................................................................................................................................. 54 6.28 Septic Tank Effluent Pipe ............................................................................................................................................. 57 OWTS Rules (250-RICR-150-10-6) November 25, 2018 6.29 Holding Tanks............................................................................................................................................................... 57 6.30 Pump Tanks .................................................................................................................................................................. 58 6.31 Pumps ........................................................................................................................................................................... 59 6.32 Distribution Boxes ........................................................................................................................................................ 60 6.33 Leachfields .................................................................................................................................................................... 61 6.34 Dispersal Trenches ........................................................................................................................................................ 65 6.35 Concrete Chambers ....................................................................................................................................................... 68 6.36 Pressurized Drainfields ................................................................................................................................................. 71 6.37 Advanced Pressure Drainfields (APDs)........................................................................................................................ 75 6.38 Low Pressure Pipe (LPP) .............................................................................................................................................. 81 6.39 Large OWTS Requirements .......................................................................................................................................... 82 6.40 Alternative Toilets ........................................................................................................................................................ 84 6.41 Alternative or Experimental Technology Approval...................................................................................................... 85 6.42 Critical Resource Areas - General ................................................................................................................................ 90 6.43 Requirements in the Salt Pond and Narrow River Critical Resource Areas ................................................................. 91 6.44 Requirements in Drinking Water Supply Watershed Critical Resource Areas............................................................. 92 6.45 Nitrogen Loading in Areas of Onsite Drinking Water Wells ....................................................................................... 92 6.46 Permit Expiration .......................................................................................................................................................... 93 6.47 OWTS Installation ........................................................................................................................................................ 95 6.48 Certificate of Construction ............................................................................................................................................ 97 6.49 Certificate of Conformance .......................................................................................................................................... 98 6.50 Permit Suspensions and Revocations............................................................................................................................ 98 6.51 Variance Requests......................................................................................................................................................... 99 6.52 Variance Review Process ............................................................................................................................................ 101 6.53 Appeals ....................................................................................................................................................................... 103 6.54 Fees ............................................................................................................................................................................
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