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Green PUDs shall be subject to the following limitations in modification of regulations in addition to those limitations set forth in BMC 12.30.030, 12.30.040 and 12.30.050:

A. In single-family green PUDs, the minimum lot size as required in Chapter 12.14 BMC may be reduced by up to 30 percent; provided, that an area(s), not including a critical area or its buffer or a non-low-impact-development storm water conveyance or storage facility, equal to the combined reduction in lot area, is set aside for one or more of the following:

1. Common useable open space comprising landscaping and facilities such as but not limited to play areas, trails, gazebos, covered shelters, picnic tables and benches;

2. Permanently dedicated open space tracts containing intact, rehabilitated or restored forest areas as described within Chapter 11.02 BMC;

3. Special storm water conveyance or storage facilities consistent with low impact development practices and standards as promulgated within the Bothell Design and Construction Standards;

4. Other noncritical areas, the preservation or creation of which promotes one or more goals and/or policies of the Imagine Bothell... Comprehensive Plan.

B. The number of lots in a single-family green PUD shall not exceed the number of lots which could be obtained if no regulations were modified.

C. The minimum lot circle diameter as required in Chapter 12.14 BMC may be reduced by up to 30 percent.

D. Within self-contained developments, the minimum front yard setback as required in Chapter 12.14 BMC for individual lots may be reduced up to 50 percent, except for garages and carports; this permissive modification shall not apply to the front yard setback from all exterior boundary lines of the site required under BMC 12.30.030(A).

E. Required side and rear yard setbacks may be reduced; provided, that minimum distances required by the International Building Code and Fire Code shall be met.

F. Recreation area requirements as set forth in Chapter 12.20 BMC may be varied as follows:

1. The minimum recreation area required in BMC 12.20.020 may be modified by the hearing body when trails and viewing platforms or facilities of a similar nature are provided within or adjacent to retained forest areas;

2. Single-purpose facilities may account for up to 80 percent of the required recreation area;

3. Location, layout and dimensions of required recreation areas in BMC 12.20.040 may be varied to accommodate the use of trails and other linear facilities located within forest retention areas.

G. The hearing body may grant modifications to the Bothell Design and Construction Standards and Specifications as adopted in BMC 17.02.010 as conditions of approval of a green PUD in accordance with the following:

1. Public street width standards may be reduced pursuant to the following:

a. Public streets classified by the city as public local access streets (ADT less than 500) may be constructed as two-lane, two-way, 20-foot-wide clear, drivable surface constructed of a standard paving material; provided, that on-street parking is prohibited on both sides of the street and announced with appropriate signage.

b. Should on-street parking on one side of the street be desired, a six-foot-wide parking area will be added to the 20-foot-wide drivable surface for a total width of 26 feet. The six-foot-wide parking area may be constructed of a pervious material as approved by the public works director.

c. Should on-street parking on both sides of the street be desired, a six-foot-wide parking area shall be added to both sides of the 20-foot-wide drivable surface for a total width of 32 feet. The six-foot-wide parking area may be constructed of a pervious material as approved by the public works director.

d. Local access streets (ADT less than 500) may be constructed as one-way looped road sections in accordance with recommendations from the public works director and the city fire marshal.

e. Guest parking must be provided when on-street parking is not constructed. One guest parking stall shall be provided for every four dwelling units. All guest parking will be clearly identified with signage and striping.

2. Private street and fire department access drives may be reduced to the following:

a. Local access private streets and access drives (ADT less than 500) may be constructed as 16-foot-wide clear, drivable surfaces constructed of standard pavement materials, with an additional three-foot pervious material shoulder capable of supporting the imposed weight of a fire apparatus on each side; provided, that on-street parking is prohibited on both sides of the street and announced with appropriate signage.

b. Guest parking must be provided when on-street parking is not constructed. One guest parking stall shall be provided for every four dwelling units. All guest parking will be clearly identified with signage and striping.

3. Roadway materials standards may be varied according to the following:

a. Pervious pavement may be allowed on road shoulders subject to specific standards established by the public works department to ensure serviceability and durability.

b. Pervious pavement on emergency vehicle turnouts and traveled ways may be allowed on a case-by-case basis by the public works director in consultation with the fire marshal based on specific plans and information regarding roadway serviceability and durability.

4. Cul-de-sac and turn-around dimensions may be varied to provide a hammerhead type of design to reduce impervious surface and may be constructed of pervious pavement pursuant to the LID Supplement to the Bothell Design and Construction Standards.

5. Pedestrian facility placement, design, and materials standards may be varied according to the following:

a. A sidewalk or trail may be allowed on one side of public or private streets or roads and driveways if the following criteria are met:

(1) The sidewalk is not designated as a primary pedestrian access route to schools;

(2) The sidewalk does not serve more than 100 dwelling units as the single point of pedestrian access between the residential unit and other elements of the pedestrian circulation system;

(3) Marked crosswalks are provided to allow pedestrians to safely cross the street to the pedestrian facility at safe locations.

b. Pedestrian facilities may utilize pervious pavement subject to specific standards to ensure serviceability and durability.

6. Parking lot standards may be varied to allow pervious pavement throughout the parking lot, provided drive aisles are capable of supporting the weight of fire apparatus. Pervious pavement shall be required on all portions of the parking lot other than the drive aisle when soil conditions warrant. (Ord. 2221 § 2 (Exh. B), 2017; Ord. 2117 § 2 (Exh. B), 2013; Ord. 2028 § 1 (Exh. B), 2009. Formerly 12.30.240).