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• <br />• <br />• <br />ditch, hydraulic capacity conforming to the drainage right of benefited lands. Notwithstanding, a <br />permit application for a ditch crossing will not obligate the District, in its function as ditch <br />authority, to investigate or hold proceedings to establish the official profile of the affected ditch. <br />Permit issuance is not a warranty and the crossing owner will remain responsible should the <br />crossing at any time be found to be an obstruction under the drainage law. In addition, a <br />crossing must' <br />(a) ' - - - - - • - - - - - Retain existing condition, (b) <br />--Retain-existing-navigational capacity. <br />(e) Not adversely affect water quality. <br />(dp) Represent the "minimal impact" solution to a specific need with respect to <br />all other alternatives. <br />(ea) Allow for future erosion, scour, and sedimentation considerations. <br />4. REQUIRED EXHIBITS. The following exhibits must accompany the permit application. <br />One set, full size (22 inches by 34 inches); two sets, reduced to maximum size of 11' .41-7 :" <br />inches by 17 inches. <br />(a) Construction details showing: <br />(1) Existing and proposed flow line (invert) elevations. <br />(2) End details with flared end sections, wing walls and /or riprap <br />(energy dissipaters). <br />(3) Size and description of structure. <br />(4) Emergency overflow elevation and route. <br />(b) Construction schedule. <br />(c) Narrative describing construction methods. <br />(d) Erosion Control Plan. <br />(e) Computations of watershed area, peak flow rates and elevations, and <br />discussion of potential effects on water levels above and below the project area. <br />5. EXCEPTIONS. <br />(a) Criteria 3(a) may be waived if the applicant can demonstrate with supporting <br />hydrologic calculations: 1) the need for an increase in discharge rate in order to provide <br />for reasonable surface water management in the upstream area, and 2) that the <br />downstream impacts of the increased discharge rate can be reasonably accommodated <br />and will not exceed the existing rate at the municipal boundary. <br />RULE H <br />DEVELOPMENT <br />1. POLICY. It is the policy of 4he --Boast -e,.,f Ma'nagcrc -te- omete the adoption - of- -I-eeal <br />ehoreland ordinances based -eh --De tment of- Natural Resournec reinuIntinnc <br />2. REGULATION. to those cities which have net- adopted- state approved ehoreland <br />ordinances, the District requires -a- permit for eleveiopment, rading -ef+1 with-irlthe- ehoreland <br />zone -et liewate ea and streams. <br />3� CRITERIA. 4 deveio +,- grading -of- -- €+{ling within -the shoreland <br />zone : ... - . - . : - . • - . - - . - - - fellew i- --setl criteria. <br />(a) Structure Setback Criteria. The placement of structures $n- lots -is <br />sentrelled --th accordance-with the class of lie waters ae- faAewe: <br />DRAFT DOCUMENT <br />31 <br />