2003-086 Ordinance - Laserfiche WebLink

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Ordinance No. 2003-86 4 Consideration shall be given to the length and steepness of the slope, soil type, upslope drainage area, groundwater conditions, and slope stabilization. (11) Stabilization of outfalls and channels. Outfalls and construction or modified channels shall be designed and constructed to withstand the expected velocity of flow from a post-development, ten year frequency storm without eroding. (12) Storm Sewer and Other Draina?e Outlets: All storm sewers, footer drains, roof gutter drains and all other drains will be outletted at the bottom of the slope. The slope below the outlet will be able to control the water being drained through the storm sewer or other drains without causing erosion of the stream or channel banks or channel bottom. If required due to the velocity of the storm water from the outlet, rock channel protection shall be placed for erosion control. (13) Establishment ofpermanent Ve etg ation. A permanent vegetation cover shall be established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until ground cover is achieved which, in the opinion of the City Engineer, provides adequate cover and is mature enough to control soil erosion satisfactorily and to survive adverse weather conditions. (14) Disposition of temporary practices. All temporary and permanent erosion and sediment control practices shall be disposed of within thirty (30) days after final site stabilization is achieved or after the temporary practices are no longer needed, unless otherwise authorized by the Engineering Division. Trapped sediment shall be permanently stabilized to prevent further erosion. (15) Mamtenance. All temporary and permanent erosion and sediment control practices and facilities shall be maintained and repaired by the owner or person in charge of the parcel of land on which such facilities are located as needed to assure continued performance of their intended function. (16) Svecial provision. Standard Number (5), Storm Sewer Inlet Protection, and Standard Number (7), Construction Access Routes, apply to a11 earth-disturbing activity regardless of lot size." SECTION 3: That Section 927.06 of the Streets, Utilities and Public Services Code, entitled "Stormwater Channel Erosion Control Standards," which presently reads as follows: "927.06 STORMWATER CHANNEL EROSION CONTROL STANDARDS. (a) In order to control channel erosion caused by increased stormwater runoff rates and volumes, stormwater runoff from development areas shall be restricted. This provision shall apply to all new construction and redevelopment on lots larger than 8,000 square feet, and for all additions on lots larger than one-half acre. (b) The peak rates of runoff after development shall be no greater than ninety (90%) percent of the peak rates of runoff occurring before any development for all 11