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1.5 STATE CERTIFIED EROSION CONTROL SPECIALTY SUBCONTRACTOR IS <br />REQUIRED FOR DESIGN, INSTALLATION, AND MAINTENANCE <br />A. Site-specific design of the erosion and stormwater pollution control system, and <br />installation and maintenance of all erosion and stormwater pollution control <br />devices, shall be by a State certified erosion control specialty subcontractor who <br />specializes in the design, installation, and maintenance of such devices. After <br />installation, this subcontractor shall maintain the erosion and stormwater <br />pollution control devices until the devices are no longer necessary. (Note: The <br />CONTRACTOR may install and maintain the erosion and stormwater pollution <br />control system under the direction of the State certified erosion control specialty <br />subcontractor.) Before beginning construction, submit to the ENGINEER for <br />review, a Stormwater Pollution Prevention Plan, prepared by the State <br />certified erosion control subcontractor. Construction shall not begin until the <br />Stormwater Pollution Prevention Plan has been submitted to the ENGINEER. <br />The CONTRACTOR shall complete the certification provided at the end of this <br />Section and it shall be a part of the Stormwater Pollution Prevention Plan. <br />1.6 "POLLUTION" AND CERTAIN UNCONTESTABLE POLLUTION EVENTS DEFINED <br />A. Except as may be defined otherwise in paragraphs 1.6.13, 1.6.C, and 1.6.D, <br />"pollution" is the presence in off-site waters of any substances, contaminants, or <br />manmade or human -induced impairment of waters or alteration of the chemical, <br />physical, biological, or radiological integrity of water in quantities or at levels <br />which are or may be potentially harmful or injurious to human health or welfare, <br />animal or plant life, or property. Pollutants to be removed include but are not <br />limited to, sediment and suspended solids, solid and sanitary wastes, <br />phosphorus, nitrogen, pesticides, oil and grease, concrete truck washout, <br />construction chemicals, and construction debris. <br />B. When the Discharge is Directly Into an Existing Water Body, Pollution Occurs <br />When ... An existing water body (including ditches and canals) is defined to <br />be polluted by the CONTRACTOR's operations when at any time, the turbidity <br />of the water immediately downstream of the CONTRACTOR's discharge <br />point(s) is 29 nephelometric turbidity units (NTUs) higher than the turbidity of <br />the background water upstream of the discharge point(s). [See Fla. <br />Administrative Code 62-302.530] The ENGINEER or OWNER shall determine <br />the locations where the turbidity is measured. <br />C. When the Discharge is not Directly Into an Existing Water Body, Pollution <br />Occurs When ... In some instances, dewatering water or stormwater runoff <br />from the construction site or work area may reach a water body indirectly, such <br />as after traveling through pipes or by overland flow. Before construction <br />commences, the OWNER or ENGINEER will measure background levels of <br />total suspended solids (TSS) and turbidity, in the immediate vicinity of the <br />discharge water's ultimate discharge point into the receiving water body. If the <br />01025-6 Technical Specifications <br />F:\Engineering\Capital Projects\0803 17th Lane SW Roadway Improvements from 27th Ave to approx. 900 LF east of 27th Ave\0803 <br />Contract Documents\Technical Specifications.doc <br />