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RFP: Spring Creek Planting caliper and the perimeter of all planting areas for acceptance by the County prior to any installation activities. All planting areas shall be prepared so that they are weed and debris free at the time of planting. Planting should occur within two days of final site preparation. Root systems shall be kept covered and damp at all times. Plant material shall be kept in containers until the time of planting. Plants should be installed vertically in holes that are three times the root spread and dug to at least the root depth. All large clods, hard lumps, and rocks 2 inches in diameter and larger, and litter within planting holes shall be raked up, removed, and disposed of prior to planting. Rootballs should be broken up and circling roots should be pruned at time of installation. Soil removed from the hole should be used to backfill it once the plant is installed and mounded around the perimeter of the plant to form a watering well. Plants shall be placed with the crown at the finished grade. In their final position, plants shall have their top true root (not adventitious root) no more than 1 inch below the soil surface, no matter where that root was located in the original root ball or container. The backfill material, including container and root ball soil, shall be thoroughly watered on the same day that planting occurs regardless of season. Plants shall be pruned at the time of planting, only to remove minor broken or damaged twigs, branches or roots. Pruning shall be performed with a sharp tool and shall be done in such a manner as to retain or to encourage natural growth characteristics of the plants. 2) Seeding The contractor will seed a total of 15.2 acres (Appendix A, Figure 2). Appendix B specifies hydroseed species mix and application rate per acre of each for each planting zone. The contractor shall be responsible for securing seed specified, transporting it to the project area, and seeding according to the design. All seed shall be sourced from eastern Washington. Substitutions are allowed based on plant availability, with prior approval from the County. The seed mix (Appendix B, Table 5) shall be applied at a rate of 20 lbs Pure Live Seed /acre. Seeding shall not be done during windy weather or when the ground is frozen, or excessively wet. Seed will be applied using a hydroseeder and shall have a tracer added to visibly aid uniform application. The tracer shall be HECP Short -Term Mulch applied at a rate of 200 to 250 pounds per acre and the tracer shall carry the measured specified seeding rate. Prior to planting and seeding efforts in each zone, the sites should be prepped for seeding by dragging a rake or comparable piece of equipment across all areas to be seeded to increase the likelihood of seed contact with soil. Seeding shall occur within 2 days of the completion of planting in zones 1 and 2 and site preparation in Zone 3. 3) Mulch Bark or wood chip mulch rings shall be applied to the surface of vegetation free soil in the isolated plant locations where trees and shrubs are planted. Bark or wood chip mulch shall be placed to a uniform