11831 AIRPORT RD WHOLE SITE FILE 2020-01-21

DIVISION 9 MATERIALS 9-07 REINFORCING STEEL 9-07.2 Deformed Steel Bars This section is supplemented with the following: All reinforcing steel shall consist of deformed steel bars complying with either ASTM A615, Grade 60 or ASTM A706, Grade 60. 9-14 EROSION CONTROL AND ROADSIDE PLANTING 9-14.1 Topsoil 9-14.1(1) Topsoil Type A Section 9-14.1(1) is supplemented as follows: Topsoil Type A shall consist of a mixture of compost, meeting requirements of Section 9- 14.4(8), and sandy loam per USDA soil texture classification. The mixture shall contain a minimum of 10% organic matter. The mixture shall be free of weeds, deleterious materials, rocks, and debris. 100% of the imported topsoil shall pass through a 3/4" screen, less than 25% shall pass through a #200 sieve. Submit one-gallon sample, source, and letter of certification from the supplier for approval prior to installation. The topsoil shall be Cedar Grove Composting 3-Way Topsoil, Pacific Topsoil 3-Way Topsoil or approved equal. To be equal, source should be a commercial operation with expertise in production of topsoil, an established method of screening materials to verify no pollutant contamination and that all materials are biodegradable, and produce a product that is equal in quality to the source listed. A quality topsoil product is at a minimum a sandy loam soil with fine compost amendments, rich in nutrients, free draining, and weed free. 9-14.2 Seed Section 9-14.2 is supplemented with the following: Seeding shall be composed of the following varieties mixed in the properties indicated: Erosion Control Seed Mixture Proportions By Name Weight % Purity % Germination Blue Wildrye 30% 95% 90% Tufted Hairgrass 30% 95% 90% Native Red Fescue 30% 95% 90% Redtop 10% 95% 90% Above seed mix shall be applied at the rate of one (2.75) pounds per 1,000 square feet. Swift Green Line—Corridor Stations Special Provisions SP188 May 2017