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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 />