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#22094-18-97PagesRoad, just north of Co. Rd. 6). Applicam's :onsuhing engineer has addressed this concern to the satisfaction of Mr. Knieger. The soulution appears to be a proposed sectional weir which can be raised or lowered incrementally. STAFF RECOMMENDATION: Approve wetland variances and mitigation subject to the recommendations in item III-B above. 3. Watgr Duality. The City Engineer has reviewed the water quality assumptions used in applicants report, and has preliminarily indicated some concern with the total reliance on NURP ponds for water quality management The concern is that nutrients in golf course nmofifait soluble and may tend to not settle out but be discharged. One way to reduce this coocero is through increased use of managed vegetative buffer strips. The Engineer also requested additional information regarding the types of turf grasses to be used, since this impacts the nutrient budget He has been provided this information as well as a proposed turf management program to reduce the amount of excess nutrients leaving the site. STAFF RECOMMENDATION: Withhold approval of the water quality plans pending recommendations from the City Engineer. Approval by the Minnehaha Creek Watershed District will also be required. 4, rulculations . Applicants have provided hardcover calculations for the sitefincluded in February 18 supplemental information) showing tluit the proposal will comply with City hardcover ordinances: FiOnc Existino Allowed 0-75*0%0%0% 75-25(7 0%4.6%25% 250-500*1.5%2.9%30% 500-1000*6.5%7.2%35% STAFF RECOMMENDATION: Accept the hardcover proposal as conforming with City ordinances. F. Septic System The existing conference center septic system should be more than adequate to serve the clubhouse. No site e%*alualion or cksign information has been submitted for the maintenance facility septic system due to ground conditions, but applicants have indicated this work is now undensay. Preliminary indications arc that the 100* x 120* drainlicIJ area #2200 4-18-97 Page 6 designated on the site plan is suitable for a single mound system, but a secondary site must be located somewhere outside that designated area. STAFF RECOMMENDATION: Condition approval of the Maintenance Facility site plan on submittal and approval of a satisfactory site evaluation and system design. G. Groundwater Usage/Impacts Water supply is not anticipated to be a problem at this site. The existing 10" well is 178* deep, cased down to 143* (was drilled to 429*, apparently caved In so that it only has open hole from 143* to 178*), approximately 100* lower than the surface elevation of Long Lake, terminating in a coarse sand layer. Static level per the 1984 Slate well record is 99*, with a 20* drawdown at a pumping rate of750 gpen. A resident of Hollander Road, Paul Bruer, has requested that the applicant be required to perform groundwater modeling studies to predict the impact of the golf course's irrigation wnter appropriations on the local water supply (see attachment *d.* of May 14 memo). STAFF RECOMMENDATION: Applicant should provide an analysis of possible groundwater impacts. II. Storage of Fuels and Agricultural Chemicals An above-ground fuel storage svstem will be installed at the site meeting all pertinent code requirements. Applicants have indicated chemical storage will be as follows: The chemical andfertilizer storage will be a small free-standing structure adjacent to the maintenance building and built with the same type materials used on the main maintenance building. During the golf season, only Class / and Class II chemicals will be stored in this secured building. In addition, all sprayers and sqfitty equipment wilt be stored in this secured building. The fertilizer building will store minimal amounts of fertilizers of the type generally used on golf courses. Access to this building will be limited to applicators licensed by the State of Minnesota STAFF RECOMMENDATION: Approval of fuel and chemical storage facilities as described and as shown on the site plan (Exhibit A of March 13 memo) subject to the appropriate permits and pertinent code requirements, and subject to appropriate screening as discussed in the March 13 staff memo.