Erosion Control Blanket

project. The Contractor may propose other types of

erosion control material, based on site conditions.

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Erosion control material shall conform to the following:

[2.8.1

Erosion Control Blanket

Blanket shall be machine produced mat of wood excelsior formed from a web

of interlocking wood fibers; covered on one side with either knitted straw

blanket-like mat construction; covered with biodegradable plastic mesh; or

interwoven biodegradable thread, plastic netting, or twisted kraft paper

cord netting.

][2.8.2

Erosion Control Fabric

Fabric shall be knitted construction of polypropylene yarn with uniform

mesh openings 19 to 25 mm 3/4 to 1 inch square with strips of biodegradable

paper. Filler paper strips shall have a minimum life of 6 months.

][2.8.3

Erosion Control Net

Net shall be heavy, twisted jute mesh, weighing approximately 605 grams per

meter 1.22 pounds per linear yard and 1200 mm 4 feet wide with mesh

openings of approximately 25 mm 1 inch square.

][2.8.4

Hydrophilic Colloids

Hydrophilic colloids shall be physiologically harmless to plant and animal

life without phytotoxic agents. Colloids shall be naturally occurring,

silicate powder based, and shall form a water insoluble membrane after

curing. Colloids shall resist mold growth.

]2.8.5

Erosion Control Material Anchors

Erosion control anchors shall be as recommended by the manufacturer.

PART 3

EXECUTION

3.1

PREPARATION

3.1.1

EXTENT OF WORK

Provide soil preparation (including soil conditioners), fertilizing, and

sprigging,[temporary seeding] of all newly graded finished earth surfaces,

unless indicated otherwise, and at all areas inside or outside the limits

of construction that are disturbed by the Contractor's operations.

3.1.2

Soil Preparation

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NOTE: Choose one of the following options

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NOTE: Elevation of subgrade will vary depending

upon the needs for additional topsoil, sod, or other

treatment.

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SECTION 02923

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