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<br /> 2 <br />filling. [used for 78-1379 Alternative energy systems] 49 <br /> 50 <br />SECTION 2. Section 78-1403 Lot Coverage and Massing Standards is hereby amended 51 <br />to read as follows: 52 <br />Sec. 78- 1403. - Lot coverage and massing standards. 53 <br />In all zoning districts other than the I—Industrial district, all lots that have a gross acreage of 54 <br />less than two acres shall comply with the following massing standards for structures: 55 <br />(a) Maximum total footprints allowed. 56 <br />(1) On lots equal to or greater than 10,000 square feet in area, the total combined 57 <br />footprints of all principal and accessory structures shall not exceed 15 percent of the 58 <br />gross lot area. 59 <br />(2) On lots of less than 10,000 square feet in area, the total combined footprints of all 60 <br />principal and accessory structures shall not exceed 1,500 square feet. 61 <br />(b) Calculation of massing. The following shall be included in the calculation of the total 62 <br />combined footprints by structures: 63 <br /> 64 <br />(1) All roofed structures more than six feet above grade level Existing Ground Level. 65 <br /> 66 <br />(2) Tennis courts, patios, decks, and all similar open structures when partially or fully 67 <br />enclosed by fences, railings or walls which extend more than six feet above grade 68 <br />level Existing Ground Level (if any portion of such structures extends more than six 69 <br />feet above grade level, the entire structure shall count toward lot coverage). 70 <br /> 71 <br />SECTION 3. Section 78-1405 (a) (5.1) Non-encroachments is hereby amended to read as 72 <br />follows: 73 <br /> 74 <br />(5.1) Retaining walls, subject to the following provisions: 75 <br />a. Retaining walls may be located in all required yards when all of the following 76 <br />conditions are met: 77 <br />1. The structure is located at least ten feet from the edge of the traveled roadway; 78 <br />2. The structure is not located within a drainage, utility, or other easement, 79 <br />except upon approval in writing for an encroachment agreement by the city; or 80 <br />similar approval from another regulatory and/or utility agency; 81 <br />3. The structure creates no impacts to drainage direction, rate or volume for 82 <br />adjacent properties. 83 <br />b. Retaining walls which do not exceed two feet in height above existing grade 84 <br />Existing Ground Level, which are located within the property and at least five feet 85 <br />from any property line, and for which the amount of imported fill associated with the 86 <br />structure does not exceed 20 cubic yards, do not require a building or land alteration 87 <br />permit. 88 <br />c. Retaining walls exceeding two feet in height above Existing Ground Level grade or 89 <br />for which the amount of imported fill associated with the structure exceeds 20 cubic 90