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HomeMy WebLinkAboutZ-6866 Staff AnalysisJune 26, 2000 Item No.: 7 rile NA_ Owner: Address: Description• Zoned: Variance Requested: Justification: Present Use of Property: Proposed Use of Property: Staff Report: A. Public Works Issues: Z-6866 Larry and Martha Cross, Robert and Carolyn Ashcraft, Ray and Mary Cross/William Putnam, Agent North side of Mabelvale West Road, west of its intersection with Darris Drive Long Legal O-3 A variance is requested from the floodway provisions of Article IV, of Chapter 8 of the Code of Ordinances of the City of Little Rock. It is the applicant's contention that the flood insurance rate map is incorrect, that this property is not in the floodway. Vacant Potential future development of retail store 1.A Grading Permit for Special Flood Hazard Area per Sec. 29-186(b) will be required with building permit. 2.A Development Permit for Flood Hazard Area per Sec. 8-283 will be required with building permit. 3. Show floodway/floodplain on site plan/base flood elevation and site contours at 2 feet increments. 4. Calculate runoff and upstream flow for 100 -year storm as outlined in May 5, 2000 letter to Mr. Ken Harper on same subject. 5.Design on-site structures to accommodate 100 -year flow as outlined in May 5, 2000 letter. June 26, 2000 Item No.: 7 (Cont. 6. Mabelvale Pike is listed on the Master Street Plan as a minor arterial. A dedication of right-of-way 45 feet from centerline is required. Right-of-way radius at curve, 600 feet at centerline. 7. Provide design of street conforming to "MSP" (Master Street Plan). Construct one-half street improvement to these streets including 5 -foot sidewalks with planned development. 8. Plans of all work in right-of-way shall be submitted for approval prior to start of work. 9. Stormwater detention ordinance applies to this property. B. Staff Analysis: An undeveloped 5.23± acre, 0-3 zoned tract is located on the north side of Mabelvale West Road, west of its intersection with Darris Drive. The Federal Insurance Rate Map (FIRM) Panel No. 050181-0021E dated November 3, 1993 shows portions of the property to lie within the regulatory floodway. Section 8-305(a) of the Code prohibits development in the floodway unless a professional engineer certifies that the development will not result in an increase in base flood elevations. The applicant is in the early stages of possible development of the land. Any potential development is affected by the floodway designation. It is the applicant's contention that the flood map is incorrect and that this property should not be designated floodway. The City's Public Works Department has been reviewing this issue for some time. Public Works agrees that this site should probably not be designated floodway due to the small drainage basin which flows through the site and the realignment of.Mabelvale Pike/Mabelvale West Road. Public Works will support a "conditional variance" based upon the applicant providing the required hydrologic study and Corps of Engineers permits prior to the issuance of any development/building permits for the site. A copy of the FIRM panel and a letter from Public Works to the applicant is attached. The property is currently zoned 0-3. The applicant is proposing a commercial development. This Board of Adjustment Action does not include a review of the site plan nor is it an endorsement of the required rezoning. Those are issues to be resolved by the Planning Commission and Board of Directors. June 26, 2000 Item No.: 7 (Cont. C. Staff Recommendation: Staff recommends approval of a conditional variance subject to compliance with Public Works Comments, including these outlined in the May 5, 2000 letter from Public Works to Ken Harper. BOARD OF ADJUSTMENT: (JUNE 26, 2000) The applicant, William Putnam, was present. There was one concerned neighborhood resident present. Steve Haralson, Environmental Compliance Engineer with Public Works, presented the issue. Mr. Haralson presented a copy of the FEMA map indicating flood hazard areas. He surmised that this property should not be designated floodway. He stated that the upper 1,000 feet of the drainage way (north of this site) serve as a holding area for Nash Creek. Mr. Haralson stated that the drainage basin that flows into this area is less than that area typically regulated by FEMA. William Ruck asked Mr. Haralson if he had done a study of the drainage area at full development and determined that there would be no problems. Mr. Haralson responded that he had and development of the site would be designed to accommodate a 100 year flood. Norm Floyd asked how drainage went under Mabelvale West Road. Mr. Haralson responded that there were culverts under the road bed. William Putnam presented aerial photographs and discussed the drainage pattern in the area. He stated that Nash Creek was the major drainage -way in the area. Ann Schweitzer, owner of the property at 10117 Nash Lane, stated that she was neither for nor against the item, that she only wanted assurances that development on this site would not affect how water flows across her property. She stated that development in the area had increased the speed at which water flowed across her property. Mr. Haralson briefly discussed the City's Stormwater Management regulations. He stated that features would be designed into the development to assure that water flow is not increased in either speed or volume. He stated that those features would hold the water on the site and control the speed at which it leaves the site. 3 June 26, 2000 Item No.: 7 (Cont.) A motion was made to approve the variance subject to compliance with the condition recommended by staff. The motion was approved with a vote of 4 ayes, 0 noes and 1 absent. 4