3878.1SCOPE
Provide sod for turf establishment, erosion control, energy dissipation of low flow water outfalls, river banks, and channel bottoms.
3878.2REQUIREMENTS
Provide sod consisting of densely-rooted bluegrass or other permanent grasses and flowers, depending on sod type shown on the Plans. Provide Material from vendors on the APL.
Cut turf-type sod in uniform strips at least 12 inches wide and 3/4 inches thick. Cut the sod thicker to retain and expose the dense root system in the bottom side of the sod . Cut the sod when it contains sufficient moisture to withstand exposure and handling during the transplant operations . Rake the sod free of debris and trim the top growth to a height from 1 inch to 3 inches. Do not use sod strips with dry or dead edges upon delivery. Between June 1 and September 15, do not cut sod more than 24 hours before delivery. Provide native sod in the dimensions specified in the Plans or by the manufacturer’s recommendations for handling immediately before installation. Before delivery, provide certification from the grower to the Engineer stating the grass varieties contained in the sod. Do not place sod until the Engineer approves the certification. Provide salt tolerant and the netted sods from certified growers as defined by the Minnesota Crop Improvement Association and the Office of Environmental Services. The Engineer will require certification of conformance based on third -party inspection and documentation process for all Material from certified growers. A Lawn Sod Provide lawn sod meeting the following requirements and characteristics:
of improved and elite type Kentucky bluegrass varieties as specified in the Seeding Manual B Salt Tolerant Sod Provide salt-tolerant sod for use along boulevards or in a potential salt environment meeting the following requirements and characteristics:
Crop Improvement Association, Minnesota Turf Association, and the Office of Environmental Services C Mineral Sod Provide mineral sod meeting the following requirements and characteristics:
greater than 10 percent organic matter by weight
of improved type Kentucky bluegrass varieties as specified in 3876, “Seed” D Native Sod Provide native sod meeting the following requirements:
and as shown on the Plans
30 Calendar Days before delivery and installation
3878.3SAMPLING AND TESTING
The Engineer will obtain test samples for determination of soil organic matter content of mineral sod from the soil exposed in the bottom side of the sod rolls. The Engineer will test for organic matter content meeting the requirements of ASTM D2974, Standard Test Methods for Moisture, Ash, and Organic Matter of Peat and Other Organic Soils. The Department may conduct its own inspection during sod production in the fields or at the Project. Provide representative samples of the sod to the Engineer if requested . Do not deliver sod until the Engineer approves the samples.
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