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HomeMy WebLinkAbout85-113~" ;''.; GC7UIVTY OF BUTTE, STAT'EOF CALIFORNIA a~'C5~':~ ,- Nei Resolution No. 851 T 3 RESOLUTION AMENDING RESOLUTION 82-68 WHEREAS, Resolution No. 62-68 was passed and adopted by the Butte County Board of Supervisors on April 27, 19$2, pursuant to the provisions of Chapter 2O of the Butte County Code to establish standards for subdivisions and land divisions; and WHEREAS, the Board of Supervisors desires to amend certain standards contained therein pertaining to storm drainage. WHEREAS, this Board, by Resolution Nn. 85-27, approved a Nitrate Action Plan for the Greater Chico Urban Area; and WHEREAS, such Nitrate Action Plan provides that smaller parcels may be created in accordance with, the Uniform Land Use and Development Density Plan but limiting development to the sewage disposal requirements of Appendix VII of the Improvement Standards far Subdivisions, Parcel Maps and Site Improvements. NOW, THEREFORE, BE IT RESOLVED by the Board of Supervisors of the County of Butte that Resolution No. 82-68 is hereby amended by adding 10.10 to read as shown vn Exhibit "A" attached hereto. BE TT FURTHER RESOLVED that Standard No. 5-26 entitled Standard 30" Drywell on Public R.Q.W. as shown in Appendix III of Resolution 82-68 is hereby repealed. BE IT FURTHER RESOLVED that Appendix VII is hereby amended by adding Paragraph "D" as shown on Exhibit "B" attached hereto. PASSED AND ADOPTED by the Board of Supervisors of the County of Butte, State of California, this 2nd day of ~uTY , 1985, by the following vote: AYES: Supervisors McInturf, (~cLaughTin, Wheeler and Chairman Fulton N 0 E S : None ABSENT: Supervisor Dolan NOT VOTING: None ~y LE FULTON, Chairman of the Bu to County Board of Supervisors ATTEST: MARTIN J. NICHOLS, Chief Administrative Officer and Clerk of the Board B Y . L~f _ o~ Q~~i~ EXHIBIT "A" 10.10 Temporary Storm Drainage Trenches: Temporary trenches will be permitted only where it is not possible to connect to an existing permanent drainage system, or it is not feasible to construct a permanent storm drainage system from the land being developed to a natural drainage course. 10.10-1 Percolation tests shall be conducted in accordance with Environmental Health Department procedures. Tests shall be taken at the proposed depth of the drainage trenches} at enough locations to verify the drainage capacity of the soil. Percolation rate shall be converted from minutes/inch to cubic feet per second/square foot. 10.10-2 The trench(es) shall be designed to contain a one in ten year frequency storm. 10,10-3 The bottom of the trench(es) shall be at least five (5) feet above any water table and there shall be at least five (5} feet of percable soil below the bottom of the trench. 10.10-4 Use rational formula, t~~CIA, to determine inflow into trench(es). Values far T & A to be determined from standards D-2, D-3 and D-4 as shown in the IMPROVEMENT STANDARDS FOR SUBDIVISIONS, PARCEL MAP AND SITE IMPROVE- MENTS PURSUANT TO CHAPTER 20 OF THE BUTTE COUNTY CODE. 10.10-5 Use one-third {1/3) of the trench volume as void area in computing amount of storm water storage available in trench(es). Rock size in trenches} shall be from one-half inch {1/2") tv four inches {4") in size. 10.10-6 Use fifty percent {50°x) of the trench bottom area and one-half (1/2) of the depth of the trench side walls and end walls in determining the area available for percolation out of the trench{es). 10.10-7 Where more than one trench is utilized, there shall be a minimum separation of four (4) feet between trench walls. EXHIBIT "B" APPENDIX VII p. Required usable sewage disposal area for these smaller lots created in accordance with IV F (3) of the Nitrate Action Plan for the Greater Chico Urban Area may be located on adjacent land by easement acceptable to the Health Department, provided: 'i. The easement is within the land area proposed for division and overlays a duly approved subdivision designed for community sewers. 2. A note shall be placed an the map that the easement encumbered lots shall not be buildable lots until such time as sewers have been made available and the easements termianted.