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ADDENDUM NO. 3 11/5/2014 <br />1.6 "POLLUTION" AND CERTAIN UNCONTESTABLE POLLUTION EVENTS <br />DEFINED <br />A. With respect to this Section and as may be further defined in paragraphs 1.6.B, <br />1.6.C, and 1.6.D, "pollution" is the presence in off-site waters of any substances, <br />contaminants, or manmade or human -induced impairment of off-site waters or <br />alteration of the chemical, physical, biological, or radiological integrity of off-site <br />water in quantities or at levels which are or may be potentially harmful or injurious to <br />human health or welfare, animal or plant life, or property. Pollutants to be removed <br />include but are not limited to, sediment and suspended solids, solid and sanitary <br />wastes, phosphorus, nitrogen, pesticides, oil and grease, concrete truck washout, <br />stucco mixer washout, curb machine washout, washout from other construction <br />equipment, construction chemicals, and construction debris. <br />B. When the Discharge is Directly Into an Existing Water Body, Pollution Occurs When <br />.. An existing water body (including ditches and canals) is defined to be polluted <br />by the CONTRACTOR's operations when at any time, the turbidity of the water <br />immediately downstream of the CONTRACTOR's discharge point(s) is at least 29 <br />nephelometric turbidity units (NTUs) higher than the turbidity of the background <br />water upstream of the discharge point(s). [See Fla. Administrative Code 62- <br />302.5301 Exception: When the discharge is directly into or through an outfall <br />discharging into "Outstanding Florida Waters," designated by Florida Statute <br />403.061(27), the turbidity of the discharged water cannot exceed the turbidity of the <br />immediate receiving water. The ENGINEER or OWNER shall determine the <br />locations where the turbidity is measured. <br />C. When the Discharge is not Directly Into an Existing Water Body, Pollution Occurs <br />When ... In some instances, dewatering water or stormwater runoff from the <br />construction site or work area may reach a water body indirectly, such as after <br />traveling through pipes or by overland flow. Before construction commences, the <br />Contractor will measure background levels of total suspended solids (TSS) and <br />turbidity, in the immediate vicinity of the discharge water's ultimate discharge point <br />into the receiving water body. If the discharge water's TSS and turbidity <br />measurements exceed these pre -construction background values by 20 percent for <br />TSS and 29 NTUs for turbidity, then the discharge from the CONTRACTOR's <br />operations is defined to be polluted. <br />D. Pollution Always Occurs When ... The discharge from a construction site or work <br />area is defined to be polluted whenever the pH of the discharge is less than 6.5 or <br />greater than 8.5, or whenever any of the following is present in the discharge water: <br />(1) Hazardous waste or hazardous materials in any quantity, <br />(2) Any petroleum product or by-product in any quantity, <br />(3) Any chemical in any quantity, or <br />(4) Concentrated pollutants. <br />E. Above paragraphs 1.6.B, 1.6.C, and 1.6.D do not in any way, limit the types of <br />conditions in which pollution may be determined to occur. <br />01025-6 <br />F:\Public Works\ENGINEERING DIVISION PROJECTS\11355 County Park Intergeneratiional Rec <br />Facility\Admim\ADDENDUMS\Technical Specs (SITE) -Addendum No. 3 11-5-2014.doc <br />Technical Specifications <br />