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CITY OF EVERETT SPECIAL PROVISIONS 1. Documentation that compost material meets the organic content, carbon to nitrogen ratio, and pH requirements identified in this section and in 9- 14.4(8). 2. Compost source and verification that the composter is a Washington Department of Ecology permitted compost facility. Calculated Amendment Rate 1. Native soil or imported topsoil soil test including bulk modulus and pH, from an accredited soil testing laboratory. 2. Organic Content of the proposed amendment and native or import soil material, based on the loss on ignition test (ASTM D2974). 3. Documentation that compost material meets the organic content, carbon to nitrogen ratio, and pH requirements identified in this section and in 9- 14.4(8). 4. Proposed amendment rates with supporting calculations 5. Test results documenting that the amended soils meet the organic content, pH and soil depth A minimum of one sample per 5000 square feet or installation shall be provided. 8-02.3(18)E Placement and Protection All soil areas disturbed or compacted during construction, and not covered by buildings or pavement, must meet the post construction soil quality and depth, except: 1. On slopes greater than 33% 2. Within 3 feet of utility infrastructure such as poles, vaults, meters, etc. 3. When otherwise indicated in the Contract Documents Existing topsoil to remain must be protected from compaction and erosion throughout the duration of construction. Provide barrier fencing or other means of restricting vehicle access to areas to be protected. Establish soil quality and depth toward the end of construction. Once established, protect from compaction, such as from large machinery use, and from erosion. Plant vegetation and mulch the amended soil area after installation. Unless otherwise directed by the Engineer leave plant debris or its equivalent on the soil surface to replenish organic matter. Refer to Building Soil-Guidelines and Resources for Implementing Soil Quality and Depth BMPT5.13, BuildingSoil.org, most current edition for additional resources. 8-02.4 Measurement Delete all paragraphs in 8-02.4 and substitute the following: Bid items of Work completed pursuant to the Contract Documents will be measured as described in Division B - Bid Item Descriptions and Section 1-09 MEASUREMENT AND PAYMENT of the Standard Specifications. 8-02.5 Payment Delete all paragraphs in 8-02.5 and substitute the following: Jackson Park Area Stormwater Separation September 2020 WO No. -UP3703 Division 8—MISC CONSTRUCTION SP-170