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silt fences are properly located for effectiveness . Where deficiencies exist, install additional silt fences as directed by the Engineer. Remove sediment deposits when the deposit reaches approximately 1 /2 of the volume capacity of the silt fence or as directed by the Engineer. Dress any sediment deposits remaining in place after the silt fence is no longer required to conform with the finished grade , and prepare and seed them in accordance with Section 570 . 104-6.4 . 7 Floating Turbidity Barriers and Staked Turbidity Barriers : Install, maintain, and remove turbidity barriers to contain turbidity that may occur as the result of dredging, filling, or other construction activities which may cause turbidity to occur in the waters of the State . The Contractor may need to deploy turbidity barriers around isolated areas of concern such as seagrass beds , coral communities, etc . both within as well as outside the right. of-way limits . The Engineer will identify such areas . Place the barriers prior to the commencement of any work that could impact the area of concern . Install the barriers in accordance with the details shown in the plans or as approved by the Engineer. Ensure that the type barrier used and the deployment and maintenance of the barrier will minimize dispersion of turbid waters from the construction site . The Engineer may approve alternate methods or materials . Operate turbidity barriers in such a manner to avoid or minimize the degradation of the water quality of the surrounding waters and minimize damage to areas where floating barriers installed . 104-6.4 . 8 Inlet Protection System : Furnish and install inlet protection systems as shown in the plans , Design Standards and the E & SC Manual . 104-6.4 .9 Rolled Erosion Control Products (RECPs) . 104-6.4 .9. 1 General : Install RECPs in locations where temporary protection from erosion is needed. Two situations occur that require artificial coverings . The two situations have differing material requirements , which are described below . ( 1 ) Use RECPs composed of natural or synthetic fiber mats , plastic sheeting, or netting as protection against erosion, when directed by the Engineer, during temporary pauses in construction caused by inclement weather or other circumstances . Remove the material when construction resumes . (2) Use RECPs as erosion control blankets , at locations shown in the plans , to facilitate plant growth while permanent grassing is being established. For the purpose described, use non-toxic , biodegradable, natural or synthetic woven fiber mats . Install erosion control blankets capable of sustaining a maximum design velocity of 6 . 5 ft/sec as determined from tests performed by Utah State University, Texas Transportation Institute or an independent testing laboratory approved by the Department. Furnish to the Engineer, two certified copies of manufacturers test reports showing that the erosion control blankets meet the requirements of this Specification . Certification must be attested, by a person having legal authority to bind the manufacturing company. Also , furnish two 4 by 8 inch samples for product identification . The manufacturers test records shall be made available to the Department upon request. Leave the material in place , as installed, to biodegrade . 104-6 .4 . 10 Chemical Treatment : Provide chemical treatment in accordance with the E& SC Manual . Chemical treatment may be used to clarify turbid or sediment laden water that does not yet meet state water quality standards or as an amendment to other erosion prevention and sediment control products to aid in their performance . The contractor must provide all of the -40 - FPID (S ) : 423186 - 1 - 58 -01