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1 Maturity: Maturity shall be greater than 80% in accordance with TMECC <br /> 2 05.05-A; "Germination and Vigor". The Engineer may also evaluate <br /> 3 compost for maturity using the Solvita Compost Maturity Test at time of I <br /> 4 delivery. Fine Compost shall score a number 6 or above on the Solvita <br /> 5 Compost Maturity Test. <br /> 6 <br /> 7 Stability: Stability shall be 7 or below in accordance with TMECC 05.08-B; <br /> 8 "Carbon Dioxide Evolution Rate". <br /> 9 <br /> 10 Feedstocks: The compost product shall contain a minimum of 65 percent <br /> 11 by volume from recycled plant waste as defined in WAC 173-350-100 as <br /> 12 "yard waste", "crop residues", and "bulking agents". A maximum of 35 I <br /> 13 percent by volume of"post-consumer food waste" as defined in WAC 173- <br /> 14 350-100 may be substituted for recycled plant waste. A minimum of 10% <br /> 15 food waste in compost is required. The Engineer may approve compost <br /> 16 products containing up to 35% biosolids or manure feedstocks for specific I <br /> 17 projects or soil blends, but these feedstocks are not allowed unless <br /> 18 specified. <br /> 19 I 20 C:N: Fine Compost shall have a carbon to nitrogen ratio of less than 25:1 <br /> 21 as determined using TMECC 04.01 "Total Carbon" and TMECC 04.02D; <br /> 22 "Total Kjeldhal Nitrogen". The Engineer may specify a C:N ratio up to 35:1 <br /> 23 for projects where the plants selected are entirely Puget Sound native <br /> 24 species. Compost may be mixed with fir or hemlock bark to raise the C:N <br /> 25 ratio above 25:1. Coarse Compost shall have a carbon to nitrogen ratio <br /> 26 between 20:1 and 45:1. <br /> 27 <br /> 28 8-02.3.GR8 <br /> 29 Construction Requirements ' <br /> 30 <br /> 31 8-02.3(5).GR8 <br /> 32 Roadside Seeding, Lawn and Planting Area Preparation I <br /> 33 <br /> 34 8-02.3(5)B.DOCX <br /> 35 Lawn Area Preparation 111 <br /> 36 <br /> 37 8-02.3(5)B.INST1.DOCX <br /> 38 Section 8-02.3(5)B is supplemented with the following: <br /> 39 <br /> 40 8-02.3(5)B.OPTI.DOCX <br /> 41 (******) <br /> 42 Unwanted vegetation in any area to be seeded shall be controlled according to <br /> 43 the requirements of Section 8-02.3(3) prior to seeding. <br /> 44 <br /> 45 Areas requiring seeding which become compacted due to construction use, <br /> 46 including but not limited to staging area, shall be loosened and cultivated (tilled) I <br /> 47 with fine compost amendment to a minimum depth of 8 inches and fine graded <br /> 48 prior to seeding operations. <br /> 49 <br /> 1 <br /> MAPLE HEIGHTS BRIDGE SEISMIC RETROFIT PAGE 100 OF 106 SPECIAL PROVISIONS—Addendum 1 <br /> WORK ORDER#3693 MAY 4,2020 FEDERAL AID#BHM-2776(008) <br />