A deer fence shall not include the use of unnecessarily large or visually unattractive components. By way of illustration, not limitation, the fencing material shall be high strength wire like mesh (1.75 inches) made of UV stable polypropylene, black, green or natural clad. Posts of a size greater than four inches by four inches, barbed wire, chain link and any elevation of grade or change of grade at or near the point of installation of the proposed fence, are prohibited. All posts shall be polyester-coated black, green or natural galvanized steel or wood spaced 15 or more feet apart excepting as circumstances require and the Building Inspector approves otherwise. Corner and/or gate posts may be four inches by four inches but all other posts shall not exceed a profile of 1.625 inches. Bracing is not allowed except at corner and gates within four feet above natural grade. Use of CCA or other chemically treated wood material is prohibited.