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3 <br /> Project:California Street Overcrossing Project <br /> Change Order No.4 <br /> Change Order Effective Date:August 8,2003 <br /> Item#140-Chain Link Fence,Type 3 . Original estimated quantity of linear feet of chain link fence, <br /> Type 3,was not required during construction. <br /> Item#141 -End,Corner and Pull Post for Chain Link Fence. Original estimated quantity of each of <br /> end,corner and pull posts for chain link fence was not required during construction. <br /> Item#146-Training. Original estimated quantity of hours of training was exceeded during construction. <br /> Item#147-Roadside Cleanup. Original estimated quantity and breakdown was not required which <br /> reduced the percentage of the lump sum. <br /> Item#150-Street Cleaning. Original estimated quantity of hours of street cleaning was not required <br /> during construction. <br /> Item#151 -Minor Change. Original estimated quantity of EWOs was exceeded due to changed <br /> conditions and redesign. <br /> Item#153-Contaminated Material Disposal. Original estimated quantity of force account for <br /> contaminated material disposal was exceeded during construction. <br /> Item#154-Concrete Class 4000W for Bridge. Original estimated quantity of cubic yards of concrete, <br /> Class 4000W,was not required during construction. <br /> Item#155-Concrete Curb,Foundation Mat. Original estimated quantity of linear feet of concrete curb <br /> on the foundation mat was not required during construction. <br /> Item#156-Pile Splice. Original estimated quantity of each pile splice was not required during <br /> construction. <br /> Item#157-Overexcavation,Unsuitable Material. Original estimated quantity of cubic yards of <br /> overexcavation of unsuitable material was exceeded during construction. <br /> Item#158-Ductile Iron Combined Sewer Pipe,8-Inch. Original estimated quantity of linear feet of <br /> ductile iron combined sewer pipe,8-inch,was not required during construction. <br /> Item#159-Ductile Iron Sanitary Sewer Pipe,8-Inch. Original estimated quantity of linear feet of <br /> ductile iron sanitary sewer pipe,was not required during construction. <br /> Item#164-Concrete Inlets. Original estimated quantity of concrete inlets was not required during <br /> construction. <br /> Item#165-18"Flared End Section. Original estimated quantity of 18"flared end section was not <br /> required during construction. <br /> Item#166-6"Ductile Iron Sanitary Sewer Pipe. Original estimated quantity of linear feet of 6"ductile <br /> iron sanitary sewer pipe was not required during construction. <br /> Item#169-Bioswale Excavation and Grading. Original estimated quantity of cubic yards of bioswale <br /> excavation and grading was exceeded during construction. <br /> Item#173-Curb Inlets. Original estimated quantity of curb inlets was exceeded during construction. <br /> Item#174—8"Ductile Iron Storm Sewer Pipe. Original estimated quantity of linear feet of 8"ductile <br /> iron storm sewer pipe was not required during construction. <br /> Work Order 2923 B <br /> Item# l -Sanitary Sewer Pipe,24"Diameter. Original estimated quantity of linear feet of sanitary <br /> sewer pipe,24"diameter,was not required during construction. <br /> Item#2-Ductile Iron Sanitary Sewer Pipe,36"Diameter. Original estimated quantity of linear feet of <br /> ductile iron sanitary sewer pipe,36"diameter,was not required during construction. <br /> Item#4-Extra Depth Sanitary Manhole Type II,96"Diameter. Original estimated quantity of linear <br /> feet of extra depth sanitary sewer manhole,Type II,96"diameter,was not required during construction. <br /> Item#6-Shoring or Extra Excavation,Class B. Original estimated quantity of square feet of shoring or <br /> extra excavation,Class B,was exceeded during construction. <br /> 15 <br /> Exhibit A <br /> Page 11 of 11 <br />