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<br /> <br />43 <br /> <br />6. Instream structures. Instream structures shall only be allowed as part of a County- <br />approved restoration project. The structure shall be designed to avoid modifying flows and <br />water quality in ways that may adversely affect habitat conservation areas. <br /> <br />7. Stormwater conveyance and discharge facilities. Stormwater conveyance or discharge <br />facilities such as dispersion trenches, level spreaders, and outfalls may be placed within the <br />outer 25% of a standard fish and wildlife habitat conservation area buffer on a case-by-case <br />basis when the Director determines that all the following are met: <br />a. Due to topographic or other physical constraints, there are no feasible locations for <br />these facilities outside the standard fish and wildlife habitat conservation buffer; <br />b. The discharge is located as far from the ordinary high water mark (OHWM) as <br />possible and in a manner that minimizes disturbance of soils and vegetation; <br />c. The discharge outlet is located in the outer 25% of the standard buffer and is <br />designed to prevent erosion and promote infiltration; and <br />d. The discharge meets state water quality standards, including total maximum daily <br />load (TMDL) standards as appropriate at the point of discharge. <br />8. Onsite sewage systems and wells. <br />a. New on-site sewage systems and/or individual wells may be placed within standard <br />aquatic fish and wildlife habitat conservation area buffers only if: <br />i. There are no alternative locations outside of the buffer; <br />ii. It complies with all state and local regulations; and <br />iii. The onsite sewage system and/or well is accessory to an approved <br />residential structure, for which it is not feasible to connect to a public sanitary <br />sewer system, and is subject to approval by the Director on a case by case <br />basis. <br />b. Repairs to failing on-site sewage systems associated with an existing structure shall <br />be accomplished by utilizing one of the following methods that result in the least <br />impact: <br />i. Connection to an available public sanitary sewer system; <br />ii. Replacement with a new on-site sewage system located in a portion of the <br />site that has already been disturbed by development and is located landward <br />from the habitat area as far as possible, provided the proposed sewage <br />system is in compliance with the Kittitas County Health Department; or <br />iii. Repair to the existing on-site septic system. <br /> <br />17A.04.060 Reporting. <br />1. When required. If a proposed development is located within or adjacent to a known or <br />suspected fish and wildlife habitat conservation area, the Director shall require the applicant <br />to submit a habitat management plan prepared by a qualified professional, defined in KCC <br />17A.02.620, which includes the information listed in this section. The requirement to provide <br />a habitat management plan for fish and wildlife habitat conservation areas may be waived on <br />a case by case basis if the Director determines that there are no potential direct and/or <br />indirect impacts on designated species or habitats that would result from the proposed <br />development. <br />2. Contents. When required by this chapter, habitat management plans for habitat <br />conservation shall include the general critical areas report requirements, as described in <br />KCC 17A.01.080, in addition the following: <br />a. Identification of any state or federal endangered, threatened, sensitive, or candidate <br />species that have a primary association with habitat on the project area; <br />b. Map showing the location of the ordinary high water mark and/or locations of fish and <br />wildlife habitat conservation area(s) and their buffers in accordance with KCC <br />17A.04.020;