3898Flocculants

3898.1SCOPE

Provide naturally derived additives for coagulating dispersed clays, and reducing turbidity in storm water runoff and use flocculants as part of a designed storm water treatment system.

3898.2REQUIREMENTS

Use environmentally benign flocculants that are biodegradable and consist of natural origin biopolymers to improve water quality and protect aquatic biota. Use flocculants meeting the following requirements detailed by each type. A Liquid Flocculant Store the flocculant in a concentrated liquid state. Ensure the manufacture’s label is affixed to the container and lists the percent of concentration in the container and the application dose rate . Obtain the Engineer’s verification of the dose rate calculations before applying to the treatment system. B Flocculant Sock Use flocculant in a gelatin-like state, packaged in individual compartments of the encasing sock Material. Ensure the encasing Material allows water to flow through it so the water comes in contact with the gelatin-like flocculant Material. Use a flocculant sock with attachment anchor cords or grommets for use in pipes, sediment control filter systems, and ditch bottoms. Provide a flocculant sock capable of treating at least 250,000 gallon of the water flowing through it. C Granular Flocculant Store the flocculant in a granulated state. Ensure the manufacture’s label is affixed to the bag or container and states the purity of the product and the application mixing rate . Obtain the Engineer’s verification of the dose rate calculations before applying the treatment system.

3898.3SAMPLING AND TESTING

Before delivery and use on the Project, submit to the Engineer a Certificate of Compliance and MSDS for approval.

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