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Show ORDINANCE NO. 3M AN ORDINANCE AMENDING AMEND-ING DAVIS COUNTY ORDINANCE OR-DINANCE PROVIDING FOR MINIMUM STANDARDS RELATING TO PLANNING AND RECORDING OF SUBDIVISIONS SUB-DIVISIONS BY AMENDING SECTION 11, SUBPARAGRAPH SUB-PARAGRAPH A-5 RELATING RELAT-ING TO THE RESPONSIBILITY RESPON-SIBILITY OF SUBDIVIDERS FOR STORM SEWERS AND RETENTION PONDS. The Board of County Commissioners Com-missioners of Davis County ordains as follows: Section 1. That Section 11, Subparagraph A-5, of the Davis County Ordinance Providing for Minimum Standards Relating to Planning Plan-ning and Recording of Subdivisions Sub-divisions of Land, which Ordinance Or-dinance was adopted April 14, 1954, and amended on August 15, 1963. be and the same Type of Development Industrial and commercial Residential Parks Agricultural hereby is amended to read as follows, to wit: Section 11, Subparagraph A-5 STORM SEWERS AND RETENTION PONDS. All subdivisions of land shall comply with the following: follow-ing: (a) Subdivision plats shall be submitted to the County Engineer for review who will examine and analyze the development, develop-ment, considering the number of units per acre, the grade and other factors, fac-tors, and apply the following follow-ing formula, to wit: RATIONAL FORMULA Q equals CIA in which: Q equals Runoff in cubic feet per second (c.f.s.) C equals Coefficient of runoff or the portion of storm water that runs off a given area. Following are suggested ranges for C value: Runoff Coefficient 80 - .90 30- 40 0 15-025 010-020 I- Average rainfall intensity during time ol concentration con-centration (or 10 year return period in inches per hour. A- .Drainage area in acres. The'proposed development will be disallowed, if based on the above mentioned formula the runoff water generated exceeds the coefficient of two-tenths (210) cubic feet per second of water per acre, unless the subdivider or developer: (1) Constructs the necessary retention ponds or basins to detain de-tain or temporarily store the storm and flood waters in accordance accor-dance with basic specifications on file in the Davis County Surveyor's Sur-veyor's office; or (2) Pays to the County seven per cent. (7) of the fair market value of ,he unimproved real property to be developed. The monies so collected shall be accumulated into a fund to be used exclusively for the construction con-struction of such retention reten-tion ponds or basins and storm water outfall lines. (b) Subdivider and for developer shall construct its own inter- nal system for collection collec-tion and distribution of such waters. Section 2 In the opinion of the Board of County Commissioners Com-missioners of Davis County, this Ordinance is necessary for the peace, health and safety of Davis County and ihe inhabitants thereof. Therefore, this Ordinance shall be effective immediately immedi-ately upon its passage and upon a copy being published in accordance with law, and a copy being deposited in the office of the Clerk of Davis County, Utah. Unanimously passed and approved this 29th day of March, A.D., 1978. Commissioners, C. E. Moss, Glen W. Flint and Wendell N. Zaugg all voting Aye. BOARD OF COUNTY COMMISSIONERS C. E. Moss, Chairman ATTEST: Rodney W. Walker County Clerk Published in the Davis County Clipper on April 7, 1978 C-72 |
