Page 20 - Efficient Irrigation and Landscape Design Standards

6
ADDITIONAL CRITERIA

6.2 SOIL ANALYSIS
A soil analysis may be required to assist in identifying appropriate plant species that minimize the need for artificial irrigation.

The Irrigation and Landscape Documentation Package must include the following soil analysis data:
4. Determination of soil texture, indicating the percentage of organic matter.
5. An approximate soil infiltration rate (either measured or derived from soil texture/infiltration rate tables). A range of infiltration rates will be noted where appropriate.
6.3 RECLAIMED WATER USE
The adopting jurisdiction should consider requiring the use of reclaimed or recycled water for plantings within the public right-of-way (such as medians and planting strips). Other landscapes such as parks, golf courses, and other facilities, may also be required to use reclaimed water or other non-potable water supplies for irrigation. Consider including statements encouraging the use of reclaimed water for private landscapes.
6.1 GRADING DESIGN PLAN
A grading plan is likely already required for construction permits to review site grading and drainage patterns for opportunities to reduce runoff. These plans should be reviewed in conjunction with the irrigation and landscape design standards to ensure consistency. In the event a grading plan is not already required for a type of permit application, the following language may be adopted.
A Grading Design Plan, if required, satisfying the following conditions must be submitted as part of the Irrigation and Landscape Documentation Package:
1. A Grading Design Plan must be drawn on project base sheets. It must be separate from, but use the same format as, the Landscape Design Plan and Irrigation Design Plan.
2. The plan must indicate finished configurations (pre- existing and new contour elevations) of the landscaped area(s), including the height of graded slopes, drainage patterns, pad elevations, and finish grade.
3. Erosion and sediment control measures and features.
» All temporary stormwater barriers and siltation fences shall be maintained in a satisfactory condition by the owner of the property, or his/her agents or contractors, until such time that grading and/or construction is completed.
20 IDAHO WASHINGTON AQUIFER COLLABORATIVE