804.2(h) 804.3(a) faster and sustained long- term plant growth. BSAs typically consist of organic material and nutrient sources combined with soil building , biost imulant , and stabilizing components. Use a BSA to promote plant growth and seed germination i f the Representative determines the soil to be visually deficient in soil organic matter or bioactivity . Provide a manufactured BSA blend according to Table C and Table D.
Table C BSA Composition Requirements Type of Component Component Materials Organic material components c onsist of a combination of two or more components for a minimum of 85% by weight of the BSA composition. Wood Bark Straw Flax Peat Mushroom manure Compost Sphagnum moss Other approved organic matter . Soil building and biostimulant components c onsist of a combination of four or more components for a maximum of 15% by weight of the BSA composition. All components of a BSA must be pre- packaged by the manufacturer . Do not add chemical additives to BS A except fertilizer, soil neutralizers , and biostimulant materials. Biochar Humic Acid Porous Ceramics Endomycorrhizae Seaweed Extract Growth Stimulants Beneficial Microorganisms Cross -linked Polysaccharide Biopolymers Other approved soil building or biostimulant materials.
Table D BSA Properties BSA Property Test Method Desired Results Color Visual Inspection Application area to be a contrasting color without staining concrete or painted surfaces Organic Matter ASTM D586 85% minimum Acute T oxicity
OR EPA Test Method 2002.0 Non- toxic pH ASTM D1293 5.0 – 8.0 C:N Ratio ASTM E1508 & EPA Method 1687 10:1 minimum 100:1 maximum Water Holding Capacity ASTM D7367 400% minimum Moisture Content ASTM D2974 10% minimum 50% maximum Vegetation Establishment ASTM D7322 400% minimum
Additional seed, fertilizer, or other soil amendments may be needed to mix with or be used in conjunction with BS A as determined by soil testing or required according to the manufacturer’s recommendatio n.
804.3CONSTRUCTION —
indicated. Spread seeds within the following dates, or as otherwise indicated or directed.
804.3(a) 804.3(d) — August 1 to October 15
• Formula C, N, W, R, P, Slope, and Wildflower Enhancements — Nursery crops Portion: — Anytime — Native Portion:
• FormulaS — As indicated
Extend seeding dates where project conditions warrant. Apply full treatment or apply only 50% of the permanen