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CITY OF EVERETT SPECIAL PROVISIONS <br /> <br />Beverly Lake Water Quality Retrofit Division 7 – STORM, SEWER, WATER August 2023 <br />WO No. - UPUP3745 SP – 188 <br />pipe diameter or 12-inches, whichever is greater for pipe, except PVC and HDPE <br />pipe, leaving or entering manholes. <br />Place pipes entering or leaving the manhole on firmly compacted bedding. Take <br />particular care in compacting bedding within the area of the manhole excavation <br />that is normally deeper than the sewer trench. Take special care to ensure the <br />annual opening around each pipe entering the manhole is completely and firmly <br />rammed full of non-shrink grout to ensure water tightness. Non-shrink grout shall <br />conform to requirements of 9-03.20.3(2) of the Standard Specifications. <br />Provide a watertight flexible pipe to manhole connector for pipe diameters less than <br />or equal to 24-inches for PVC or HDPE pipes connecting to manhole. Place no <br />PVC or HDPE pipe joint within 10-feet of the outside face of the manhole. <br /> <br />Supplement 7-05.3 by adding the following: <br /> <br />7-05.3(5) Furnish and Install Solid Lid for Catch Basins <br />(******) <br />Provide new solid lids on existing catch basins where shown on the Plans. Provide <br />solid lids conforming to 9-05.15 of the Standard Specifications, 9-05.15(1) of these <br />Special Provisions, and to COE Standard Drawing No. 406 and 410 for Type 1 and <br />1-L Catch Basins and COE Standard Drawing 611 for Type 2 Catch Basins. <br />7-05.4 Measurement <br />Delete all paragraphs of 7-05.4 and substitute the following: <br />Bid items of Work completed pursuant to the Contract Documents will be measured as <br />described in Division B – Bid Item Descriptions of these Special Provisions and Section <br />1-09 MEASUREMENT AND PAYMENT of the Standard Specifications. <br />7-05.5 Payment <br />Delete all paragraphs of 7-05.5 and substitute the following: <br />Payment for bid items of Work completed pursuant to the Contract Documents will be <br />as described in Division B – Bid Item Descriptions of these Special Provisions and <br />Section 1-09 MEASUREMENT AND PAYMENT of the Standard Specifications. <br /> <br />7-06 WATER QUALITY TREATMENT STRUCTURES <br />(******) <br />7-06.1 Description <br />This Work consists of furnishing and installing Bypass Structure(s), Hydrodynamic <br />Pretreatment device(s) and Water Quality Treatment Structures of the size and model <br />specified and in accordance with the configuration and location shown on the Drawings <br />and these Special Provisions. <br /> <br />7-06.1(1) Water Quality Treatment Units <br />Flow Splitter <br />The Flow Splitter shall be fabricated in accordance with the Drawings, applicable <br />Standard Drawings and the requirements of the Design and Construction <br />Standards and Specifications. The device includes a standard Type 2 catch <br />basin of size identified in the drawings containing fabricated flow control risers. <br /> <br />Hydrodynamic Pretreatment Device <br />The Hydrodynamic Pretreatment device shall be: CDS® device manufactured by <br />Contech Engineered Solutions LLC, of type and configuration indicated in the <br />Drawings, or approved equivalent.