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Home My WebLink AboutPRESENTATION 01/05/2009Vi CONSTRUCTION MANAGEMENT PROGRESS REPORT No. 38 li f ii TIM4111F6 PRESENTATION January 5, 2009 The Covello Group PARTICIPANTS Owner: City of Petaluma Mike Ban 11 English Street Director Petaluma, CA 94952 (707) 778-4487 Margaret Orr Engineering Manager (707)778-4589 Contractor: Kiewit Pacific Co. Clint Cole 5000 Marsh Drive Project Manager Concord, CA 94520 (925) 516-4600 Design Engineer: Carollo Engineers Tom Patten 2700 Ygnacio Valley Rd, Suite 300 Principal Walnut Creek, CA 94598 (925) 932-1710 Doug Wing Design Engineer (925)299-6733 Environmental ESA Jim O'Toole Management: 8950 Cal Center Drive, Bldg 3, Suite 300 Project Engineer Sacramento, CA 95826 (707) 795-0900 Jennifer Garrison Enviromnental Manager (916) 564-4500 Programmer: AreSine engineering Doug McHaney 970 Executive Way Project Manager Redding, CA 96002 (530) 222-7204 Steve Stewart Lead Programmer (530)222-7204 Construction The Covello Group Bruce Presser Manager: 1660 Olympic Blvd, Suite 300 Principal Walnut Creek, CA 94596 (925) 933-2300 Ken Sinclair Construction Manager (925)260-2943 Ed O'Brien Field Engineer (925)382-1246 2 • Contractor: KIEWIT PACIFIC CONSTRUCTION Base Contract Amount (Total Project) .................................... $ 110,329,000.00 Change Orders Executed .................................................. $ 3.989,347.00 Total Contract Cost ......................................................... $ 114,318,347.00 Contract Amount Earned ................................................... $ 110.839,120.00 Progress Payment for November 2008 (excludes retention).....,..... $ 781,591.00 Previous Progress Payments (excludes retention).. . ....... ........... $ 98,974,260.00 Estimated Percent Complete............................................................. 97 % • Design Engineer: Carollo Engineers Authorized Budget (Total Project).... ...... .... $ 4,354,075.00 Billings to Date-- . ............. ...... ....... ...... $ 4,178,348.69 • Environmental Manager: ESA Authorized Budget (Total Project). ............ - $ 1,434,830.00 Billings to Date...............................................................$ 1,062,233.56 ArcSine engineering Authorized Budget (Total Project)... ... ..................... .......... $ 2,340,951.00 Billings to Date.... ............. -- .... ................ .............. $ 2,014,087.02 • Construction Manager: The COVELLO GROUP, Inc. Authorized Budget (Total Project) ....................................... $ 10,231,509.00 Billings to Date...............................................................$ 8,047,404.73 3 Schedule Notice to Proceed ........................ Base Contract Duration ............... Original Completion Date........... Time Extension Authorized ........ Revised Duration ...... .... ............... I ... I.................. October 10.2005 ........I .............................. 1278 consecutive days ................................................... April 9, 2009 ............................................................ 67 days Revised Completion Date ......................... ......................... 1345 consecutive days ...................................... June 15, 2009 Weather Days (included in base duration)..........................................................40 days Weather Days Expended (included in time expended).......................................82 days TimeExpended.............................................................................................. 1147 Days Percent Time Expended........................................................................................... 85°X0 4 Construction Manager's Summary 1. Schedule The project remains on schedule for completion by June 2004. 2. Work Progress Oxidation Ditches The performance testing on the mixed liquor return pumps at both oxidation ditches was completed. Secondary Clarifiers The performance testing of scum pumps at the secondary clarifiers was started in November. Main Electrical Building Loadshed testing was performed on the generator. This testing demonstrated that the generator would be protected if the electrical demand exceeds the capacity of the generator. Headworks Facility The strategy field testing was completed on the bar screens, washer/compactors, the grit cyclone and classifier and grit pumps to confinn that the SCADA programming properly operated the headworks equipment. The strategy field testing was also completed for the septage receiving facility. The gratings for the openings in the headworks deck were installed. Screw Press Building Work continued on pulling, terminating and testing of the wiring in the building. Installation of the 3 water, polymer and digested sludge piping was completed. Methane Digester Testing of the 3 water, digested sludge and sample lines was completed. Coating of the piping and equipment continued through the month at the methane digester equipment pad. Acid Digester No work was completed at this facility during the month. Boiler Building Pulling, terminating and testing of wire for the equipment in the building continued. Installation of small diameter piping continued through much of November. Thickener Building Pulling, terminating and testing of wire continued throughout the month. The waste activated sludge, 1, 2 and 3 water and the seal water piping was completed. Biofilter The biofilter media was removed so that the required smoke testing could be completed on the underlying rock and gravel layers. This testing will confirm that the air is properly distributed throughout the biofilter. Operations and Maintenance Building Completion of punch -list activities continued. Filter Support Preliminary testing of the fire protection system was completed. Tertiary Filters Grout was placed around the filter cones. The mixer supports and mixer were installed in the influent well. Exposed electrical conduits were installed on the top deck of the facility. Pulling, terminating and testing of the wire were started. UV Disinfection The baffle plates were installed. The UV equipment vendor was on-site to supervise the installation of the equipment at the facility. Recycled Water Pump Station This facility has been put into operation. Wetlands Planting During the summer, cattails have grown in the mitigated wetland. These plants are considered invasive and were cut down in cell D of the polishing wetlands and in the mitigated wetland. Planting of the wetland plants in Pond 10 was started. The planting will continue into December. As needed, water was pumped from Pond 9, through the Wetlands Pump Station to the Polishing Wetlands to maintain necessary water levels in those ponds for plant growth. Site Landscaping Soil amendments were added around the operations building and in the area of the demonstration garden. The plants were delivered, placed and the planting was started for the demonstration garden. This garden is located around the recycled water storage pond. Rock and gravel used in the material storage yard was removed and the area returned to farmland. This yard was located in the northeast corner of the site. The temporary access road from the west access road to the south cluster was also removed. Final grading was started in the area south of the IN structure. Polishing Wetlands Replacement of header boards and aggregate material continued for the trails around the 4 polishing wetland cells. Connection of Existing Pipeline The hot tap of the existing pipeline between the Hopper Street Plant and the existing ponds was completed. This connection will allow flow from the PIPS facility to be directed to the new Ellis Creek Facility. The pipe between the hot tap and the headworks was completed and backfilled. Flood Control Berm A flood control berm was constructed along the east side of the plant using surplus dirt. This berm will provide additional protection to the treatment plant when Ellis Creek leaves its banks, which is anticipated to happen with the 10 -year flood event based on data that is being used for the flood study for creeks in Sonoma County, which indicates more runoff in smaller storm events (URS, Ellis Creek Flood Study November 13, 3008). Existing Chlorine Contact Basin A weather monitoring station was installed. The roads around the existing ponds were graded and aggregate base material was added as necessary to provide an all weather road. 3. Contract Changes No change orders were processed in November. Three hundred fifty five change orders have been executed to date with a combined value of $3,989,347.00 4. Field Orders Ten new field orders were prepared this month. Two -hundred thirty five field orders have been prepared for the project. Of those, one hundred four remain active with a total estimated value of $852,666.00. Active field orders for general changes greater than $10,000 are as follows: FO No. Description Amount 76 Concrete Hand Holes at Light Bases $15,456.00 88 RWPS: Truck Fill Station $11,354.00 96 Headworks, Relocation of Local Control Stations and JBs $46,510.00 106 CCB: Addition of Drain Vault Float and Clarification on Heat Trace Controller $15,000.00 110 Handrail at Oxidation Ditch 1 and 2 North Bull nose $10,000.00 111 Handrail Post Pockets at Headworks $25,000.00 113 HVAC Modifications at Filter Support, Thickener & Screw Press $10,000.00 117 Modify Solids Handling Slab $22,000.00 134 CCB Wash down System $50,000.00 142 Housekeeping Pads for Pump LCP's at Filter Support $12,615.00 145 Existing CCB Piping Modifications $30,000.00 173 Ops Bldg: Canopy Hood Single Speed Motors $10,000.00 175 Water Meter Box Modifications — Locations and Valves $11,641.00 177 Level Switches at RWPS Cans $15,000.00 182 Additional Grading at RWSB— Build Up Petals $20,000.00 183 Waste Gas Flare Modifications $15,000.00 200 CCB Paving/Grading Modifications $40,000.00 201 West Access Road Sidewalk Demolition $10,000.00 202 RWPS 3W Supply Modifications $10,000.00 204 Entry Road Sidewalks $40,000.00 207 West Access Road — Entrance Conduit Protection $12,000.00 216 Life Ring Cabinets $10,000.00 221 Motor Operated Gates in Fences $10,000.00 225 East Flood Protection Berm $75,000.00 233 Headworks Barscreen Enclosure Gas Monitoring $20,000.00 Total Active Field Orders a $10,000 $306,090.00 5, Testing Pipe was pressure tested as required throughout the month. Testing of the controls systems as noted in items above were completed this month. 6. Anticipated Work for Next Month Mass Electric will continue pulling wire and completing terminations at many facilities throughout the site including the methane digester, acid digester, boiler building, thickener building, digested sludge tank and the waste gas flare area. Strategy field-testing to confirm the operation of the control programming is scheduled to be completed on the equipment at the stone water pump station Installation and testing of piping will continue at most of the structures in the solids handling area of the plant. At the screwpress building, a structure will be installed to support the sludge load -out piping. Testing of equipment will continue throughout the site. Equipment that will be tested includes chemical metering pumps, the storn water pumps, polymer systems in the filter support building and the UV system. During December, the Operational Testing of the liquids process should be completed. In this test, recycled water will be pumped in a circle between the headworks, the oxidation ditches and the secondary clarifiers and the necessary splitter boxes to simulate conditions when flow is routed through the plant. This will allow for the testing of the controls system on a complete system rather than on a specific facility. It will also allow for operators to manipulate the system to determine if proper controls exist to operate the system to treat influent to meet permit requirements. Once this five day test is successfully completed, the liquids process portion of the plant can receive raw sewage. SUBMITTAL STATUS FIELD ORDERS Total Cost of Total November Active Active Orders Field Orders Issued 235 10 104 $781.288.00 Total November Value of Change Orders Executed in November 0 $0.00 Value of Change Orders Executed to Date 355 $1989,347.00 Percent to Date of Original Contract 3.62% WEATHER RELATED DELAYS Days Base Contract Allowance 40 Weather Related Days in November 0 Weather Related Days to Date 82 9 Received To Date November Returned Pending First Time Shop Drawing Submittals 903 7 897 6 Request for Information 1524 13 1522 2 C. M. Request for information 259 4 258 1 FIELD ORDERS Total Cost of Total November Active Active Orders Field Orders Issued 235 10 104 $781.288.00 Total November Value of Change Orders Executed in November 0 $0.00 Value of Change Orders Executed to Date 355 $1989,347.00 Percent to Date of Original Contract 3.62% WEATHER RELATED DELAYS Days Base Contract Allowance 40 Weather Related Days in November 0 Weather Related Days to Date 82 9 Kiewit Laborers and a Castle Concrete Pumping Operator placed grout around the Sand Filter Cones and Equipment at the Tertiary Filter Building. m, 10 Mass Electricians worked on the wire terminations at the Air Handling Local Control Panels for the * Backwash Upflow, Sand Filters at the Tertiary Filter Building II Redwood Painting started the coating of the Ferrous Chloride Piping. TD Williams and Kiewit performed the Hot Tap on the existing 36 inch Sanitary Sewer Main. 12 Ellis Creek Water Recycling Facility CONTRACT CHANGE ORDER TRACKING SHEET cco # Description Amount (Days) 1 Time extension for additional soil sampling 0.00 8 2 Lime treatment at Ox Ditch & Secondary Clarifiers 125,000.00 3 Board up Farmhouse 3,385.00 4 Hay Stacker Relocation 493.00 5 Terrorism Insurance and Increased Earthwork 0.00 6 Meter in Temporary Recycled Water Pipeline 3,023.00 7 Temporary Power for Pond 1 Aerators 1,270.00 8 Pavement Repair on Cypress and McDowell 419,681.00 9 Conduit Encasement Coloring Agent J47,0n(j ui)) 10 Delayed Caltrans Encroachment Permit 16,723.00 11 Trench Cut -Off Walls 18,bs)0,1)t.il 12 Horizontal Aerators Extended Warranty Testing 0.00 13 Deletion of Prime Coat under AC Pavement (;'0, t00 00) 14 Replace PVC Sched. 40 with EB 20 Conduit in DB t2 1774 area 15 Delete Lakeville Highway Access 40,000.00 16 Contract Time Extension for Weather Days 03-04106 0.00 38 17 Change Valve Types 0.00 18 Replace EMT conduits by MC cable @ O&M Bldg 1,1 ro (m) 19 Inverter Duty Motors at Oxidation Ditch Aerators 16,466.00 20 Aerated Lagoon and Pond 1 Modifications Milestone 0.00 21 Additional Striping and Loops on McDowell 13,747.00 22 Catch Basins Invert Changes (9,917 00 23 Oxidation Ditch Sump Modifications ( 7 750,00) 24 Change Buried Conduits PVC GRS to PVC Sch. 40 (213,038 00) 25 Temporary Power to Existing Aerators 4 and 7 7,956.00 26 O&M Bldg: Ceiling & Wall Heights Rms 4,287.00 27 Provide Portable Generator Pads at Ponds 2,554.00 28 FS Bldg: Extend Conduit Stub -ups Beyond Ductbank 9,190.00 29 Headworks: Handrail Extension to Complete Deck 1,254.00 30 Pond 4 Aerator Temp Power 883.00 31 Aerated Lagoon: Reconnecting of Aerator No. 2 537.00 32 Unknown Utility at Pond 1 North Side 855.00 33 Ductbank Encasement with Reinforcing 24,884.00 34 Gun Safe for Storage of Bid Documents 2,410.00 35 S&C Pad Mounted Switch Additions 75,200.00 36 Permanent Power Supply for Pond 1 Aerators 98,000.00 37 Temporary Fire Hose 851.00 38 Change material for Temporary Debris Collector (3k3,150,1)0y 39 Chemical Tank Pads @ Filter Support Bldg 4,425.00 40 Disconnect Aerator No. 2 & reconnect Pond 4 Aerators 607.00 41 Delete Steel Steps in Manholes i 11,01'2. 00) 42 Add 4" Butterfly Valve in Acid Digester 1,189.00 43 Delete Pre -Action Fire System 0 Main Elect. Bldg (19,242 00) 13 cco # Description Amount 44 Headworks Influent Box Modifications 3,000.00 45 Transformer Pad at Restroom 9,498.00 46 Addition of Construction Joint at Oxidation Ditch Slabs 23,505.00 47 Change Conduits from PVC Rigid Steel to PVC Sch. 40 (F'.CP! ? o(f) 48 Reader Board & Geogrid placement @ Cypress/McDowell 6,000.00 49 Plant Control System PLC Architecture i 1 18 nU l 50 Grit Pump Room Sump Pump Modification 1,326.00 51 PLC Enclosure Size for PLCs 2, 3 and 8 5,446.00 52 Additional Time Switches at O&M Bldg. 2,722.00 53 Extension for Pond 1 Aerators Milestone Date 0.00 54 Levee Repair at Berm Existing Ponds 8 & 9 289,279.00 55 Operations Bldg. Maintenance Window 1,022.00 56 In -Plant Pump Station Wall Penetration Details 2,807.00 57 Alignment of 42" RSG line to Headworks 4,208.00 58 Revision of Structural Joints at Headworks Facility 5,628.00 59 Pond 9 & 10 Levee Pothole 1,400.00 60 Add pipe for Future Pump Can @ RWPS 6,316.00 61 Home Inspection of Farm House 746.00 62 Alignment of 42" PWE line to Cell D Transfer Structure 8,171.00 63 Delete Locks on Motor Operated Overhead Coiling Doors 183 001 64 Dewatering of Pond 8 and Mitigated Wetland 3,488.00 65 UV System Programming 2,777.00 66 Septic Tank Removal at Farm House 739.00 67 Changes to Slide and Sluice Gates 11,177.00 68 PLC System Material for C Street Pump Station 14,915.00 69 PLC - 10 Analog Input Module 1,873.00 70 Change Storm Drain Pipe from RCP to CHDPE 11233is on) 71 Deletion of CMU Coating on non -occupied structures 2 `)38 00) 72 Existing Utilities at West Access Road Entrance 8,543.00 73 Change Handrail for Polishing Wetlands Structures 6,965.00 74 Change SDR for HDPE Pipe Lines (52 s 15 Of)) 75 Addition of waterstop in wall @ Filter Support Bldg, 1,330.00 76 Delete waterstop & starter walls @ HW, RAS PS, UV 1,AX3 00) 77 Re -Power Pond Aerators, Reconnect Aerated Lagoon 3,718.00 78 Contract Time extension for Weather Days 10/2006 0.00 79 Deletion of waterstop and starter walls at Tertiary Filters 1,334 00f 80 Add waterstop at Grit Pump Area of Headworks Structure 6,167.00 81 Fuel Tank Removal at Farmhouse 2,972.00 82 Revised Anchorage for Oxidation Ditch Aerators 40,941.00 83 Deletion of Integrated System Shop Testing (ISST) 0.00 84 Additional Dowels at Maintenance Bldg. 914.00 85 Replace Fuses at MCC 3A after PG&E power spike 1,706.00 86 Remove and replace disconnect switch @ Aerated Lagoon 2,919.00 87 Lower Invert Elevation for 42" RSG Line 18,726.00 88 Addition of Roof Hatch @ Main Electrical Bldg. 3,195.00 89 Filter Support Bldg: NG Connections and Valving 1,361.00 90 Chain Link Fence addition @ Farmhouse 725.00 91 Repair Irrigation Lines @ Kaiser 1,186.00 14 (Days) 1 CCO # Description Amount 92 Demo of Spillway at Pond 10 12,109.00 93 Curb and Grading @ Filter Support Bldg 0.00 94 Irrigation System: Concrete Valve Boxes 2,393.00 95 Contract time extension for Weather Days 11/06 0.00 96 Mitigation Wetlands Drain 4,370.00 97 Additional vinyl sheets for Levee Repair @ berm Pond 8 & 9 5,498.00 98 Shoring @ Naval Trail 21,271.00 99 Extra excavation @ W Access Rd. for 12" 1W line 8,008.00 100 Replace SBS line @ Chlorine Contact Basin 5,936.00 101 Brush clearing @ Farm House 5,209.00 A 102 Relocate standby Generator @ CCB 2,005.00 103 Drywall Furring @ Elect Rm #2 in O&M Bldg. 1,630.00 104 Equipment for MCC -3 retrofit 25,360.00 105 Perimeter lighting switching @ Main Elec. Bldg. 1,795.00 106 Wiring for Time -Off Relay @ Wetlands Elec Bldg. 2,282.00 107 Changes to SCADA interface Boiler & PLC 3 3,549.00 108 Disposal of existing MCC 3 transformer 2,141.00 109 Contract time extension for Weather Days 12/06 0.00 110 Tree removal @ W Access Rd. 1,419.00 111 Deepening Pull Boxes @ Ox Ditch MCC Bldg. 11,540.00 112 Rebar modification @ Wetlands Pump St Deck Beam 2,187.00 113 Electrical Equipment Pads 9,018.00 114 Delete Catch Basins at W Access Rd. 1,746.00 115 Naval Bldg Lookout Area 3,000.00 116 Changes to TWE and PWE lines 0.00 117 Polishing Wetlands FSS: Add Hand Switch 3,444.00 118 Engineering of Anchorage @ Oxidation Ditch Aerators (20 (189 OM 119 Replace Oxygen Probes @ Aerated Lagoon/Pond 1 13,411.00 120 Change Piping Material for Deionized Water Service 0.00 121 Filter Support Bldg: Relocation of 1 W Line 4,568.00 122 Security Lighting at Farmhouse 1,200.00 123 Disposal of Asbestos Containing Pipe 2,087.00 124 Investigation and Disposal of FAA Building 20,512.00 125 Conduit addition @ Boiler Bldg. 15,780.00 126 O&M Bldg: Exhaust fans power supply & controls 34,440.00 127 Addition of Disconnect Switches @ Headworks 25,143.00 128 Level Transmitter addition @ Headworks 23,058.00 129 Contract Time extension Weather Days 01-02/07 0 130 Subgrade Improve & Pipe Encasement @ W Access Rd. 12,128.00 131 Additional Conduit for Fuel Leak Detection 2,714.00 132 HVAC Enclosure Modifications @ Ops Bldg. 8,014.00 133 Wiring of Spare I/Os 45,713.00 134 PLC Enclosure Size for PLC 5 7,823.00 135 Partial Payment for PLC Enclosures 0.00 136 Trench Backfill with Native Material ('12,000.00) 137 UV Bldg Top Slab Modifications 14,000.00 138 Ops Bldg: HVAC Electrical & Mechanical Modifications 2,854.00 139 24" Pumped Storm Drain Line Coverage 30,000.00 15 (Days) 5 7 7 ccO # Description Amount 140 Metal Siding @ Main Electrical Bldg. 5,071.00 141 Contract Time Extension for Weather Days April 2007 142 Ops: Relocate HVAC duct transition @ Locker Rm Ceiling 878.00 143 Use of Native Material for backfill @ North & Middle Cluster (Pin,o o O{r1 144 Recycled Water Storage Basin Size Increase 220,867.00 145 Outlet conduit replacement @ Existing CCB 1,260.00 146 Modify Rebar Expansion Joints @ Thickener Bldg 1,610.00 147 Modify Grating Seat @ Headworks Beam B-13 1,737.00 148 Added Space Heater for PLC 8 - RIO 1 1,803.00 149 Additional G2 Light Fixture @ Ops Bldg Lobby 2,013.00 150 Connection Grounding Bldg rebar @ MCC HW Bldg. 974.00 151 Relocate supply line fire riser @ maintenance Bldg. 3,027.00 152 Pipe material for 36" mixed liquor line @ 2ndary Clarifiers 14,271.00 153 Modifications HVAC Pads 9,562.00 154 Mod per PG&E Requiremnts to Main Power Supply 19,886.00 155 Addition of Wall Sleeves at Thickener Building 847.00 156 Reduce Deck Slab Openings @ Wetlands Pump Station 782.00 157 Wall Supports for Pony Wall at Laboratory 2,162.00 158 Concrete Encase HCS pipeline @ Headworks Structure 2,393.00 159 Convert Conference Rm into 2 Offices @ Ops Bldg. 8,351.00 160 Concrete Backfill around Screw Press Equipment Trench 1,588.00 161 Expansion Joint Rebar @ Headworks Grid Line 10 1,151.00 162 Standby Generator Connection @ Wetlands PS 13,527.00 163 Deletion of Rotameters @ Tertiary Filters 1,014 001 164 Blockouts for Ox Ditch Aerator Anchorage 1,022.00 165 Concrete Encase SD pipe under HWE pipeline @ HW 1,657.00 166 Temporary Power for Transformer @ Aerated Lagoon 28,343.00 167 Rebar @ Headworks Manual Bar Screen Embed 756.00 168 Subgrade Improvement for Wetlands PS Apron Slab 11,799.00 169 Screw Press Bldg Skylight Size Change 3,465.00 170 Additional 1/0 from Power Panel to PLC -9 2,887.00 171 Standby pump @ existing CCB during work @ Pond 10 44,000.00 172 Billing for Potable Water Usage on site through 4/4/07 1,552.00 173 Upgrade starters for Ox Ditch Aerator Motors 78,373.00 174 Blind flanges for future effluent line @ Aerated Lagoon 11,709.00 175 Remove rebar @ Ox Ditch Aerator Motor Block-outs 3,000.00 176 Modification of controls for Tertiary Effluent Bypass Valves (.t 075,{)0) 177 Communication between PLC -8 & Thickener PLC 2,032.00 178 Automated 1W Valve @ Recycled Water Storage Basin 46,267.00 179 Modification to HW Bar Screen Channels 6,130.00 180 Relocate Fire Pump Can @ RWPS 4,613.00 181 Add Effluent Conductivity Probe @ JB No. 2 9,680.00 182 Revise DB Routing @ Ferrous Chloride Area 2,463.00 183 Ventilation Alarms @ Boiler Bldg & Thickener Bldg 20,526.00 184 Anti Graffiti Coating @ O&M Bldg and Sound Wall 28,736.00 185 Deletion of Louvers @ HW Bar Screen Enclosures (1,37400) 186 Deletion of Combination Smoke Fire Dampers 18 005 001 187 Fire Rating Janitor Closet Door @ Ops 1,841.00 16 (Days) 1 CCO # Description Amount (Days) 188 Brush clearing @ Farm House fire season 2007 3,186.00 189 Ops: CMU alignment & wall cap @ HVAC enclosure 1,826.00 190 Ops: addition acoustical ceiling @ electrical rm #1 3,125.00 191 Ops: framing details for Lobby 2,163.00 192 RWPS: modified floor drainage 15,107.00 193 Ops: beam seats in CMU wall pockets 10,067.00 194 Recycled Water Storage Basin Berm Modifications {2,595,00 195 Double Containment System Modifications 90,172.00 196 Site Security Lighting Estimation Cost 10,364.00 197 Grading @ Mitigation Wetlands & RWSB 27,012.00 198 PG&E power connection @ W Access Rd. 55,335.00 199 UV Disinfection Light Pole Mounting Detail 7,027.00 200 Ox Ditch Light Pole Mounting Detail 8,852.00 201 Existing GCB: power to New Chemical Metering Pump 8,588.00 202 Screw Press grating @ Flocculation Tank Opening 1,969.00 203 Anchorage of Diffuser Pipe Ponds 9 & 10 32,659.00 204 Acid Digester changed detail wall penetrations 4,286.00 205 Existing LPN panel in chemical bldg. 2,576.00 206 Revised Details @ RWSB 20,881.00 207 Ops: Deletion of Closet in Control Room (93 011) 208 Ultrasonic level sensor mount @ Headworks 1,208.00 209 Mitigation Wetlands Drain - Permanent Installation 75,048.00 210 Ops Bldg: Plumbing Dwgs 29,571.00 211 Ops: Deletion of decking @ Mechanical Chases 1,719.00 212 Headworks: channel floor rebar modification 1,696.00 213 Ops: Furring Men's Restroom Urinal Wall 740.00 214 Informational Kiosks: Addition of 2" PVC 40 Pipe Sleeve 2,560.00 215 Screw Press: Modifications to Underslab Piping 2,607.00 216 Below Grading Coatings 72,507.00 217 Aerated Lagoon: Unknow utility @ 20" URW Alignment 5,225.00 218 Ops Bldg: Additional Window Clips 3,194.00 219 Silt Fence Repair 1,209.00 220 Ops Bldg: control rm. Backing & wood blocking 2,185.00 221 Ops Bldg: Modifying Welding Studs to 118" Tubing 5,293.00 222 Pond 10 Apron Slab: Over Ex, Fabric, and Rock 3,870.00 223 Addition of Solenoid Valve @ Recycled Water Surge Tank 5,095.00 224 Thickening Walls @ Ox Ditch Aerator Shafts 11,286.00 225 Relocate Receptacles @ Biofilter Mechanical Pad 3,286.00 226 Equipment Pad Modifications @ Screw Press 5,130.00 227 Footing Elevation @ Filter Support Bldg. Tank Farm 2,098.00 228 Relocation of Cell D Transfer Structure 5,162.00 229 Pipe Elevations & Drainage Swale @ Polishing Wetlands 1,938.00 230 Farm House: Plywood Cover @ Back Entry 756.00 231 Methane Digester construction joint location & piping 1,057.00 232 Ops Bldg: Icemaker Legs 893.00 233 Acid Digester: Overflow Piping Modifications 1,727.00 234 West Cluster: Sitework & Grading Change 277.00 235 Ops Bldg: Future access control conduit stub -outs 1,720.00 17 CCD # Description Amount 236 Ops Bldg: Interior lights & furring strips 2,292.00 237 Potholinq & Excavation existing utilities @ CCB 42,606.00 238 Replace Farmhouse Roof 34,194.00 239 SCADA: TWAS sump level set points 1,682.00 240 CCB: Relocation of Ammonia Tank 17,176.00 241 Add wire way in PLC 6 @ Existing Chemical Storage Bldg. 1,775.00 242 Replace Landscaping on Kaiser Property 2,690.00 243 Electrical Modifications @ UV Bldg. 47,188.00 244 Headworks: Rebar Detail @ Channel Wall Ends 1,625.00 245 Rebar @ Screw Press Bldg. Slab Extension 1,625.00 246 Tertiary Filter: 12 Inch Inlet Line 17,248.00 247 Ops: Modifications to Fume Hoods (490,001 248 Ops: Addition of Compressed Air @ Laboratory 22,641.00 249 Ops: Training Room Modifications 8,494.00 250 Emergency Repair Kit Deletion (557 00) 251 Increase Cover Over 14 inch Foul Air Line 1,972.00 252 Headworks: Epoxy Coat Rebar @ Block-outs 20,579.00 253 Relocation of Mezzanine Column @ Screw Press 3,225.00 254 Additional Rebar @ Oxidation Ditch 1,348.00 255 Pipe Class Acid Gas & Methane Gas Pipe 6.089 o(1) 256 Modifications to the Potable Water System 105,856.00 257 Thickening Bldg piping modifications 764.00 258 Catch Basin grating modification Co_) W Access Rd. culvert 4,950.00 259 Headworks FRP grating support @ Gate location 2,219.00 260 Digested Sludge Storage Tank: Piping Modifications 4,828.00 261 Modifications to Analyzer Enclosures 9,315.00 262 Additional Conduits & Wires Miscellaneous Areas 41,620.00 263 Planting modification @ West Access Rd. 2,328.00 264 Install Clapper Rail Trail Gate 2,687.00 265 Amphitheater seating next to Polishing Wetland Cell D 29,577.00 266 Ferrous Chloride- revised electrical & pump pad 24,552.00 267 Chip Down Top of Wall @ Filter Support 3,411.00 268 Conduits for Future Mixer @ CCB 11,320.00 269 Modifications for Interfacing between PLC 6 and PLC 11 5,800.00 270 Headworks Deck Slab Falsework 26,026.00 271 Dewatering of Pond 8 20,157.00 272 Pressure Gauges @ Wetlands Pump Station 4,110.00 273 Irrigation Changes @ Point of Connection 24,050.00 274 Filter Support: 4" chemical drain elevation 872.00 275 Unknown Utilities @ Site Entrance 4,205.00 276 Mitigated Wetland Planting ('1,30900) 277 Changes & Additions to 3W System @ Ox Ditches 34,716.00 278 Garbage Bin Structure 25,644.00 279 Relocate Veolia Materials @ CCB 788.00 280 Wetlands PS Portable Eyewash Station 5,217.00 281 Temporary Irrigation Connection to Schollenberger 2,255.00 282 Partial Deletion of Planting @ Polishing Wetlands (18,900,00) 283 Change NEMA Rating for Pull Boxes @ Ox Ditches (10, 726.0W 19 (Days) cco # Description Amount (Days) 284 Delete Trail Material W Polishing Wetland Cell D � 7 1t,5 Ufy 285 Equipment Pad Modifications @ CCB Bldg. 26,412.00 286 Parapet Detail @ Ops Bldg Lobby 18,746.00 287 Relocate Potable Water Riser @ 1 W Pump Station 3,299.00 288 Dewatering Pond 7 for TW IS 14,419.00 289 Additional work for Farmhouse Roof Replacement 41,819.00 290 Material for Clay Liner in RWSB 13,820.00 291 Ops Bldg 1 hr Fire Rating 40,885.00 292 Maintenance Bldg: 2hr Fire Rating 1,282.00 293 Relocate Tie -In to Potable Water Sys @ Cypress Dr. 8,042.00 294 Changes to Gates & Operators @ W Access Rd. 18 38,1 00t 295 Ellis Creek Clean Up 8,395.00 296 Analog Input Module for PLC 11 2,766.00 297 Addition of the Polishing Wetlands Pump Station 415,000.00 298 Natural Gas Connection & Metering Pad 18,435.00 299 Additional Digital Input Points PLC 9 2,335.00 300 Weather Monitoring Station 24,976.00 301 Modifications for future Polishing Wetlands Pump Station 16,899.00 302 Addition of Geofabric @ East Access Rd. Ponds 8,740.00 303 Outlet Cutouts in Backsplash @ Ops Laboratory 1,908.00 304 Ops Bldg: Exhaust Fan Drainlines 7,662.00 305 PVC pipe for Plant Drain Piping 0,36, 001 306 Drainage Swale @ W Access Rd. t 500 (10) 307 UV Stair Grating Changes (3,1 i'I 001 308 UV Channel Blockouts for Wireways 0; 849 00 309 CCB: Welding of 42' Pipe Connections 27,142.00 310 Trail Connection @ Schollenberger Park 13,167.00 311 Waste Gas Flare Pedestal 2,366.00 312 Relocation of cabinets in Ops Bldg. 753.00 313 Support for folding Partition in Ops Bldg. 830.00 314 Deepen Fuel Sump @ Generator 3,855.00 315 Operation Bldg: Fire Sprinkler Riser 25,728.00 316 Glass Lined Ductile Iron Pipe 97,613.00 317 Wetlands PS Mixer Mounting Bracket 1,798.00 318 Uninterruptible Power Supply @ Ops Bldg. 24,754.00 319 Clarifier 1 & 2 Light Post Mounting 3,060.00 320 Transformer Relocation @ Existing CCB 6,187.00 321 Ops Bldg: Mudroom Skylight Framing 5,192.00 322 Wetlands Pump Station Interim Milestone 0.00 323 Analyzer Enclosure @ Outfall Structure 11,080.00 324 Additional Grating @ Biofilter Damper Boxes 2,747.00 325 Additional Valves for Hydronic System 762.00 326 Modifications @ Flow Control Structure C-2 (2,1591 00 ) 327 Change Manhole & Catch Basin Elevation @ South Cluster 1,923.00 328 Modifications to the Existing Outfall Structure 12,254.00 329 Anti Graffiti Coating @ Garbage Bin Structure 2,389.00 330 Instrumentation and Control Modifications @ Existing Plant 58,658.00 19 CCO # Description Amount (Days) 331 Miscellaneous Extra Work @ Junction Box No. 2 49,264.00 332 Miscellaneous Extra Work @ Existing CCB 12,655.00 333 Paint Flashings and install Spark Arrestor @ Farmhouse 2,860.00 334 Temperature Detection for Recycled Water Pumps 19,598.00 335 Raise Top of Electrical Pull Box @ Headworks 3,391.00 336 Modifications to Biosolids Load -out @ Screw Press Bldg. 266,077.00 339 Reverse Service Generator Plug 4,699.00 340 Submersible Sump Pump Control Panels 2,445.00 341 Flow Meter Transmitters @ WPS 1,597.00 342 Additional Fence & Gate @ Existing Farmhouse 5,299.00 343 Install pressure gauge @ Tertiary Filter Hypochlorite panel 1,684.00 344 Widen Sidewalk @ Filter Support Bldg. 821.00 345 Anti Graffiti Coating @ W Access Rd. Public Restroom 3,920.00 346 Screw Press Parapet Wall Height 2,658.00 347 Handrail Installation @ Ox Ditch Weir Gates 7,798.00 348 Bond and Insurance Over -Billing (66,172 00) 349 Drains for AC Unit & Backflow Preventers @ Ops Bldg 2,185.00 350 Delete wires @ Headworks & add wires @ PW FSS 0.00 351 Added Sample & Drain Lines @ JB 2 4,127.00 352 Additional Blackout Shades @ Ops Bldg. 885.00 353 Relocation of Drain Lines @ Biosolids Load -out Slab 10,201.00 354 Deletetion of Vinyl Coating- chemical pump pad @ CCB 0.481 Opt 355 Ferrous Chloride Line Encasement under Equip Pad 2,608.00 356 Power Supply to Current Tranducers @ Ox Ditches 3,999.00 357 Level Switches @ RWPS 5,081.00 CHANGE ORDER TOTAL: 3,989,347.00 87 Contract Amount: 110,329,000.00 1278 Percent Change Orders: 3.62% Totals: 114,318,347.00 1345 Total Additive Change Orders 4.978,076.00 Percentage of Contract Amount 4,51% Total Credit Change Orders (988,729.00) Percentage of Contract Amount 0.90% Contract Substantial Completion Date 4/9/09 Current Substantial Completion Date 6/15/09 20 I 0 75 co CD 0 E 0 z I Pi ry 5 A z Pl. 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