The maximum area or percent of any parcel of land that may be occupied by impervious surfaces is specified in Tables 1 and 2 of Section 18.48.010. Impervious surfaces are meant to include surfaces that will not allow or will greatly reduce the penetration of water into the ground. Impervious surfaces include the following: concrete, asphalt, bricks, paving stones, swimming pools, roofs, "turf stone," plastic sheeting, compacted gravel and rock areas, corrals and similar surfaces. Impervious surfaces are measured in a horizontal plane. Impervious surfaces may exclude:

A.

Features enumerated in Section 18.52.070 to the extent which such features are permitted to extend into required yards by such section;

B.

Roofs of all buildings, except for overhangs which exceed six feet in width;

C.

That portion of a driveway which is further than one hundred feet from a residence as measured along the driveway;

D.

Impervious surfaces beneath roof overhangs which are counted as impervious surfaces.

(Ord. 1995-285 § 1 Exh. A (part), 1995; Ord. 1989-244 § 1 Exh. A (part), 1989: Ord. 1988-242 § 2 Exh. A (part), 1988: Ord. 1979-166 § 14, 1979: Ord. 1967-80 § 1 (6204), 1967)

When conditional use permits are approved for the uses listed below, which uses were in existence as of January 1, 1990, the planning commission or town council may allow impervious surfaces in excess of those specified in Section 18.56.010 when it finds there is no reasonable way to meet the normal impervious surface standards and that the use as approved will still in all other ways meet the requirements of Chapter 18.72. The deviation from normal impervious surface standards shall be only to the extent necessary to render the project reasonable and acceptable by the planning commission or town council. The uses subject to this provision are as follows: Sections 18.12.030 D 1, 2, 4, 5 and 7 and 18.36.020 A and C.

(Ord. 1990-254 § 1 (Exh. A) (part), 1990)

A. Front Yards. In other than residential zoning districts, planting in required front yards shall conform with any roadside planting standards adopted by the conservation committee. At least twenty-five percent of such required front yard shall be landscaped, such area to have a minimum dimension of five feet.

B.

Structures Which Require Conditional Use Permits. Landscaping shall be located in close proximity to structures in order to improve appearance, obscure unattractive features, or effect visual separation from parking lots.

C.

Adjoining Parcels Within C-C and A-P Districts. Landscaping in such districts shall present an overall unified appearance. To this end, landscape design and planting for contiguous properties shall be coordinated, especially where planting beds adjoin.

D.

Parcels with Frontage on Alpine Road and Portola Road. Parcels with frontage on the following roads if planted with trees and/or shrubs, shall be planted with only such trees and shrubs as are on a plan approved by the conservation committee. This provision shall apply to the portion of the parcel within seventy-five feet of the road right-of-way:

1.

Alpine Road in the section from the northern town limits to Portola Road.

2.

Portola Road.

E.

Parcels in C-C and A-P Districts, Parcels in C-C and A-P districts shall have a minimum percent of the parcel as specified below with a natural vegetative cover or in a landscaped condition. Such areas shall not be developed for use by motor vehicles, occupied by buildings or covered by paving:

1.

C-C (community commercial) district - thirty percent;

2.

A-P (administrative-professional) district - forty percent.

(Ord. 1979-166 § 15, 1979: Ord. 1967-80 § 1 (6205), 1967)