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CHANGE ORDER NO. 5 DATE OF ISSUANCE: EFFECTIVE DATE: OWNER: INDIAN RIVER COUNTY CONTRACTOR: CLOSE CONSTRUCTION, LLC PROJECT: PC South Algal Nutrient Removal Facility OWNER'S PROJECT NUMBER: 949 ENGINEER: INDIAN RIVER COUNTY You are directed to make the following changes in the Contract Documents: Item 5.1 Description Furnish and install submersible pump in existing well, furnish and install hydropneumatic tank and pressure controls, piping, valves, etc. and connect to existing Gorman -Rupp pump. Reason: To insure the Gorman -Rupp pump does not lose prime. Due to the long suction line length required by SJRWMD, there is concern that the Gorman -Rupp pump will lose prime, causing significant and continuous maintenance issues. Revise center harvest flume bottom elevation at discharge tie-in point per email description to Close Construction dated 9-5-2014. Reason: This revision is necessary due to a conflict in the Construction Drawings. Revising the elevation 5.2 will make harvesting operations much easier for staff. Extend the concrete work pad at the South Relief Canal Pump Station site. 5.3 Reason: To provide a safer work area. Furnish and install Type 316 stainless steel fasteners on the flanged aboveground RO brine line discharge fittings. Reason: To provide more robust corrosion resistance. (The project was bid under Utility Division specifications that did not 5.4 require Type 316 stainless steel fasteners.) Furnish and install a single pipe support for the vertical aboveground RO brine line discharge into the headworks structure. Reason: Additional support is needed to 5.5 resist water forces within the pipeline. Furnish and install an additional 6" well for the recycle water system. The well shall be approximately 100 feet deep with 40 feet of 0.030 slot screen, identical to the three wells installed in Change Order No. 4. Reason: The original well placement design assumed the recycle water system wells would be constructed at 50 foot spacing. SJRWMD requires 100 foot spacing between wells which significantly increases the length of the centrifugal pump's suction pipe, which reduces the flow that can be pulled from each well by the pump. A fourth well is required to provide additional flow capacity. Increase the recycle water system pump suction line trom 4" diameter to 6" diameter. Reason: The pump suction pipe must be increased because SJRWMD requires 100 foot spacing between wells, increasing the overall distance of the pump suction line. A larger diameter pipe is necessary to reduce the pump suction head which will allow increased pumping capacity. 5.6 5.7 5.8 5.9 5.10 5.11 5.12 Permit plan revision fee charged by the IRC Building Department. Reason: The electrical design was modified requiring another Building Department review. Delete approximately 14.3 cubic yards of 1" to 3" diameter washed brown river quartz at the South Relief Canal site. Reason: Will be replaced by concrete drive/work slab. Delete approximately 72 square yards of filter fabric at the South Relief Canal site. Reason: Will be replaced by concrete drive/workasphalt pavement at the Delete approximately 53 square yards of 2" type SP 12.1 P South Relief Canal site. Reason: Will be replaced by concrete drive/work slab. Delete approximately 56 square yards of 8" limerock base at the South Relief Canal site. Reason: Will be replaced by concrete drive/work slab. Delete approximately 59 square yards of 12" stabilized subgrade at the South 5.15Relief Canal site. Reason: Will be replaced by concrete drive/work slab. Increase/Decrease 1 Increase/Decrease in Contract Time in Contract Price (Calendar Days) $8,965.00 $2,896.03 $4,270.00 $359.10 $1,507.59 $5,885.00 $10,783.45 $50.00 ($1,760.88) ($117.53) ($789.47) ($374.39) ($148.50) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 83