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using a high strength nylon thread . The bag shall have a fill spout large enough to accommodate a 4 - inch pump discharge hose . Straps shall be attached to the bag to secure the hose and prevent pumped water from escaping without being filtered . 2 . Installation : Install in accordance with the manufacturer' s specifications . Use as many filter bags as required , at no additional cost to the OWNER . Legally dispose of the bags offsite , at no cost to the OWNER . If the bags are placed on aggregate to facilitate filtration efficiency , do not use limerock aggregate . 3 . Product : The filter bag shall be supplied with lifting straps . a . " DIRTBAG 53 or 55 as applicable , " supplied by ACF Environmental , Inc . ( 1 - 800 -448 - 3636 ) . b . " DANDY DEWATERING BAG " supplied by Dandy Products , Inc . ( 1 - 800 - 591 - 2284 ) . c . Or equivalent . E . Curb Inlet Protection . 1 . Filter stormwater before it enters curb inlets . 2 . Installation : Install in accordance with the manufacturer' s specifications . Use as many of the specified filtration devices as required , at no additional cost to the OWNER . 3 , Product : All materials shall be new and unused . The length of the curb inlet filtration device shall be at least 2 -feet longer than the curb inlet opening . a . " GUTTERBUDDY , " supplied by ACF Environmental , Inc . ( 1 - 800-448 - 3636 ) . b . Or equivalent . F . Catch Basin Protection . 1 . Filter stormwater before it enters catch basins ( drop inlets ) . The filter " sack " shall be manufactured from woven polypropylene geotextile and sewn by a double - needle machine , using a high strength nylon thread . The sack shall be manufactured to fit the opening of the catch basin or drop inlet and it shall have the following features : two dump straps attached at the bottom to facilitate emptying ; lifting loops as an integral part of the system to be used to lift the sack from the basin ; and a colored restraint chord approximately halfway up the sack to keep the sides away from the catch basin walls . The colored restraint chord shall also serve as a visual means of indicating when the sack should be emptied . 2 . Installation : Install in each catch basin in accordance with the manufacturer' s specifications . Use as many of the specified filtration devices as required , at no additional cost to the OWNER . 3 . Product : All materials shall be new and unused . a . " SILTSACK" ( regular flow ) , supplied by ACF Environmental , Inc . ( 1 - 800 -448 - 3636 ) . b . " FloGuard + PLUS , " supplied by Kristar Enterprises , Inc . ( 1 - 800 - 579 - 8819 ) . c . Or equivalent . G . Construction Site Egress Driveways : Minimize the transport of sediment and soil from the construction site or work area by vehicle wheels . Construct a crushed rock 01025-9 Technical Specifications F : \ Public Works\ENGINEERING DIVISION PROJECTS\ 1136 -6th Ave SW Culvert Replacement N of 23rd St SW\Admim\Contract Documents\Technical Specification s . doc