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Hydrologic Soil Group A B C D Pre-Development eN 39 61 74 80 ADDITIONAL RULE CONSIDERATIONS Vegetated Buffers While a 50-foot buffer rule has been implemented as part of Rule M, it may be premature for incorporation of buffers District-wide without completion of an inventory of District wetlands with functions and values delined. However, it would be benelicial to deline a minimum vegetated buffer requirement for all streams and ditches under the District's Shoreland Development Rule. In addition, a minimum vegetated buffer requirement for wetlands (e.g. 25- feet) may also be benelicial to limit human encroachment and reduce un-pennitted wetland impacts whereas in the past Jot pads are sometimes proposed as close as 10-15 feet from the wetland edge and homeowners later add a deck or patio. In the future, the District will consider subwatershed specilic buffer rules as the need (e.g. pollutant reduction, habitat preservation, hydrologic cycle preservation, and/or reduction of human impact) is identilied through a Resource Management Plan. Banking While not applicable or warranted as watershed-wide rule, the District is considering implementation of banking (of credits for various restoration activities or stormwater management criteria) on a subwatershed basis. The need for and specilic banking commodity would be identilied and assessed during the development of Resource Management Plans for specilic subwatershed of the District. A subwatershed specilic rule governing the banking plan would then be adopted. Examples of probable banking commodities include wetland restoration, nutrient reduction and volume reduction, to name a few. If permitted action achieves specific criteria in excess of the requirements, the pennittee may deposit the excess (credits) in a bank administered by the District and use or convey them to meet, in whole or part, the requirements applicable to other permitted actions within the RMP area. Housekeeping Revisions For other minor rule revisions and general housekeeping items proposed, please visit the District's TAC webpage (specilically the memo dated 4/17/03). NEXT STEPS Another TAC meeting will soon be scheduled by Steve Hobbs. The District would greatly appreciate your input on these proposed rule revisions at the meeting. In the meantime, feel free to contact me (651-770-8448) or Steve (763-398-3070) with any questions about the proposed reVISIOns. Emmons & Olivier Resources, Inc. Page 80f8