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January 9, 1995 CHANGE ORDER NO. ONE Project: Wastewater Treatment Plant Sludge Dewatering Facilities 1. Equipment manufacturer change: a Furnish and install a R J ENVIRONMENTAL manufactured chlorine scrubber in lieu of a ENVIRONMENTAL SYSTEMS TECHNOLOGY b. The alternate equipment is equal in quality and performance. c. Deduct. . <$16,000> 2. Building accessory addition: 3. 4. 5. a. Furnish and install panic hardware to plan-designated door no. 's 11, 12, and 13. b. Provides emergency exiting - not included in original plans and specifications. c. Add... . $1,194.01 Equipment deletion: a. Delete one MEYERS QP 15-3 chlorine/sulfur dioxide solution pump. b. Two were specified, one of which was intended for backup; the City's existing chlorine solution pump (same mfr. & model) will be used as C. backup. Deduct . Utility relocation: . <$506.20> a. Furnish and install approximately 120 feet of 12-inch diameter ductile iron pipe, including fittings. b. The University's existing effluent irrigation piping was located during excevation and was found to be within the site of the new chemical building, re-routing was necessary. The original scope had not included this work because the pipe's location was unknown. C. Md . ì.í79 Equipment addition: a. Furnish and install a motorized damper on the chlorine scrubber. b. As originally shown on the drawings the scrubber would withdraw simultaneously from the chlorinator and sulfanator rooms. The damper allows withdrawal from either one room or the other individually, automatically; effectively increasing the scrubber's capacity to the 95-o1 ---PAGE BREAK--- required level. This feature was overlooked and therefore not included in the original design. C. Add. . . . . . . . . . . . . . . . . $2,215.50 6. Door and window modification: a. Furnish and install insulated glass in all doors and windows, in lieu of non-insulated. b. The original plans and specifications called for non-insulated; insulation was added to improve the buildings' thermal ratings. C. Add . . . . . . . . . . . . . . . . . . . . . . . . $1 ,209.39 7. Utility repair: a. Furnish and install 22 feet of 4-inch diameter cast iron sanitary sewer service pipe. b. The installation of the massive electrical duct bank immediately north of the plant's lab/office building exposed the existing 4-inch dia., 4-foot jointed clay pipe. It's poor physical condition and proximity to the new electrical equipment warranted replacement - to avert future failure. c. Add . . . . . . . . . . . . . . . . . . . . . . . . . . . . $450.00 8. Utility repair/relocation: a. Furnish and install new electrical conduit, conductors, and junction box(es), as required, to repair and relocate the University's existing underground electrical service to their irrigation pumps at the west end of the chlorine contact chamber. b. The existing service paralleled, within inches, the University's irrigation pump line that had to be relocated as described under No. 4 above. This electrical service also had to be moved to accommodate the plant's new improvements. c. Add . . . . . . . . . . . . . . $1 ,829.99 9. Equipment modifications: a. Furnish and install a non-explosion proof exhaust fan for the polymer room in lieu of explosion proof: furnish and install a corrosion resistant heater in the chlorine/ sulfur dioxide scrubber room in lieu of the standard type b. The fan was specified explosion proof, Kimball Engineering determined this unnecessary: the heater was not specified corrosion resistant, Kimball Engineering determined the corrosion resistant model more appropriate. c. Deduct (net for this item) . . . . . <$262.20> 10. Structural modification: a. Construct a cast-in-place concrete curb around the scrubber inside the chemical building - to contain leaked chlorine or sulfur dioxide should a leak occur. ---PAGE BREAK--- b. C. The curbing is a safety feature recommended by the scrubber manufacturer and had been inadvertently omitted form the original plans and specifications. Add . . . . . . . . . . . $629.85 11. Utility repair: a Repair an existing 6-inch cast iron sludge drying bed drain line that was hit during the demolition of an existing concrete wall. b. The location of this line was unknown and therefore had not been shown on the plans; the Contractor was unaware of it's presence. c. Add . . . . . . . . . . . . . . . $106.87 12. Equipment modification: a. Furnish and install explosion proof "speed control" and "shorting switch" devices for the belt filter press in lieu of the standard type. b. These devices were not specified as the explosion proof type in the original plans and specifications; however, were later determined to be needed for safe operation in the possibly volatile gas environment of the sludge dewatering building. c. Add . . . . . . . . . . . . . .$640.72 13. Contract time extension: a. Add 15 calendar days to the contract time for substantially completing the project; the original contract allows two hundred (200) calendar days. The work to be performed pursuant to this contract shall now be substantially complete on or before two hundred fifteen (215) calendar days from the issuance of the NOTICE TO PROCEED. b. Additional time being allowed for two reasons: Extra work herein identified this change order. Inclement winter weather deterring normal progress of work - the Contractor continues to work, contract calendar days are being assessed, but productivity is low. Original contract amount . . . . $1 ,627,855.00 Net change in price, this change order . 1,684.28 PK Contractors, ld: Kimball Engiring: REVISED CONTRACT AMOUNT . . . $1,626,170 72 City of Moscow, Idaho: //c/43 Mayor