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Division 2 - Technical Provisions, IRC -2022 <br />B. When the Discharge is Directly Into an Existing Water Bodv An existing water body (including <br />ditches and canals) is defined' to be polluted by the CONTRACTOR's operations when at any <br />time, the turbidity of the water immediately downstream of the CONTRACTOR's discharge <br />point(s) is at least 29 nephelometric turbidity units (NTUs) higher than the turbidity of the <br />background water upstream of the discharge point(s). [See Fla. Administrative Code 62- <br />302.530] Exception: When the discharge is directly into or through an outfall discharging <br />into "Outstanding Florida Waters," designated by Florida Statute 403.061(27), the turbidity <br />of the discharged water cannot exceed the turbidity of the immediate receiving water. The <br />ENGINEER or OWNER shall determine the locations where the turbidity is measured. <br />C. When the Discharge is not Directly Into an Existing Water Body In some instances, <br />dewatering water or stormwater. runoff from the construction site or work area may reach <br />a water body indirectly, such as by overland flow. If the discharge water's TSS and turbidity <br />measurements exceed pre -construction background values by 20 percent for TSS and 29 <br />NTUs for turbidity, then the discharge is defined to be polluted. <br />D. When Pollution Always Occurs The discharge from a construction site or work area is defined <br />to be polluted whenever the pH of the discharge is less than 6.5 or greater than 8.5, or <br />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 />Above paragraphs 1.6.13, 1.6.C, and 1.6.D do not in any way, limit the types of conditions in <br />which pollution may be determined to occur. <br />1.7 PENALTIES FOR NONCOMPLIANCE WITH THIS SECTION <br />A. In addition to the OWNER's specific remedies, if erosion or pollution is caused by dewatering <br />water or stormwater runoff from the construction site, the OWNER may report the violations <br />to Indian River County Stormwater Enforcement, SJRWMD, FDEP, Indian River Farms Water <br />Control District (or other F. S. Chapter 298 Drainage District, as appropriate), and other <br />pertinent regulatory or enforcement agencies. <br />PART 2 - MATERIALS AND INSTALLATION <br />2.1 GENERAL <br />A. Polvacrylamide: As required in Paragraph 1.3.C, place polyacrylamide (PAM) on bare ground <br />to reduce the potential for erosion and cover it with hay, jute, or mulch. PAM may also be <br />used in water bodies to remove turbidity. In all cases, use the anionic form of polyacrylamide <br />that does not stick to fish gills. For PAM information and its proper application, a contact is <br />Applied Polymer Systems, Inc., (678) 494-5998, www.siltstop.com. <br />B. Staked Silt Fences: <br />1. General: Use silt fences to control runoff from the construction site where the soil <br />has been disturbed. <br />Division 2 — Technical Provisions - 01025-8 <br />FAPublic Works\ENGINEERING DIVISION PROJECTS\2022 4th St Culvert Replacement at 90th Ave\1-Admin\Bids\Bid Documents\DIV 2 TECHNICAL PROVISIONS - <br />20201118.docx — <br />