Construction Progress Report February 2009

Wet Weather Improvements Project Central Marin Sanitation Agency

Table of Contents

Section 1 WWIP Executive Summary

Section 2 WWIP Project Photos

Section 3 Logs

Executive Summary

Contract Number 07-01

General Contractor Western Water Constructors

Contract Bid Amount $35,550,000.00

Change Orders to Date 9, plus one Extra Work Order

Pending/Anticipated Change orders 5 items

Notice to Proceed October 8, 2007

Original Contract Time 910 calendar days

Working Days Elapsed 510

Working Days Remaining 400

Milestone 1 (CCT & EPS) July 29, 2009

Milestone 2 (All other work) March 6, 2010

Rain days – Accepted to date 8 of 50 included within contract time

Contract Change Order(s) Time Extension 0

Contract Completion Date April 5, 2010

Total Project Time Expended 56.0%

Total Project Cost Expended 64.5% Work Progress during February 2009 by Area or System: 1. General:

Western Water submitted the January 2009 schedule update. Milestones 1 and 2 still show completing on time. Western Water has begun initial planning for testing, training and start up. A testing, training and startup planning meeting was held with the system programmer, Carollo Systems on February 26. Western Water (WW) maintained the SWPPP best management practices (BMPs) for wet weather. One rain day was incurred on February 17. Western Water continues routine weekly safety tailgate meetings, weekly safety checks, as well as the monthly safety audit performed by WW’s safety officer. Written reports of all meetings, checks and safety audits have been submitted for the record.

2. Polymer Facility: Western Water received the polymer tank with the outlets in the proper locations and set the tank on its pad. Western Water will secure the tank and install the ladder in March. After the polymer activation units, pumps and other appurtenances are on site, Western Water will complete the piping work in this facility.

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3. Gallery A & B Improvements, including Grit Chamber 3 and Headworks Western Water completed construction of the new suspended influent channel beams and walls in the existing gallery. Additional concrete test cylinders were made and field cured, allowing Western Water to strip the channel forms and remove the shoring below the channel once the concrete attained specified strength. The field cured test cylinders allowed Western Water to do this work in two weeks instead of waiting for a month. Western Water connected the 6-inch 3W line around the underside of the suspended influent channel. The 12-inch tank drain line was also connected.

4. Primary Clarifiers 6 & 7 Western Water completed concrete placement for the southern exterior wall and center tank wall and the new influent channel cantilevered slab at elevation 116. They also completed concrete placement of two sections of the north wall of Tank No. 7 and one section of the influent channel continuation walls. The remaining sluice gate wall thimbles were set in place in the headwall of the new influent channel section.

5. Chlorine Contact Tanks (CCT) 5 & 6 Western Water continued some minor mechanical work within the new Chlorine Contact Tanks. Once additional equipment and materials are received, Western Water will complete the mechanical work. Western Water continued to patch and sack the concrete surfaces of the new Chlorine Contact Tanks.

6. Effluent Pump Station (EPS) Western Water completed concrete placement of all upper wall sections of the Effluent Pump Station. Subcontractor, Patent Construction will install shoring for the roof deck in March after the walls are cured and stripped.

7. Site improvements Western Water’s electrical subcontractor, Aspen Timco, completed installation of the electrical duct bank from Pull Box 06 to the Effluent Pump Station. Western Water installed catch basin CB02 adjacent to the Effluent Pump Station. They also installed the new portion of the 8-inch fire protection water line with cathodic protection and connected it to the existing system. The system is now back in service.

8. Aeration Tanks The electrical subcontractor, Aspen Timco, continued the conduit runs on the exterior of the aeration tank building. They will submit a proposed conduit routing plan with details for the Agency’s review. The conduits are for the new sluice gate operators.

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9. Review Item Summary Please see attached open RFI and Submittal logs in Section 3 for details of the following outstanding items.

Review Items Total Received to Date

Number Received in February

Number Returned / Reviewed in February

RFIs 141 4 4 Submittals 275 19 7 Certified Payroll 398 20 20

10. Change Order Summary

Approved Change Orders Description Cost

Contract Change Order No. 001 One-time relocation of PG&E gas Line $0.00

Contract Change Order No. 002 Miscellaneous Small Changes (9 items) $1,043.00

Contract Change Order No. 003 Miscellaneous Changes (8 items) $40,403

Contract Change Order No. 004

Secant pile retaining wall additional work over Ross Valley Interceptor per Design Clarification No. 002, performed on $54,228

Contract Change Order No. 005 Miscellaneous Changes (11 items) $11,249.00

Contract Change Order No. 006 Small Changes (7 items) $22,182.00

Contract Change Order No. 007 Procure and install 5th effluent pump assembly Not to

exceed Contract Change Order No. 008 Six (6) Construction issues $49,165.00

Contract Change Order No. 009 Seven (7) Issues, Including CLSM Value Engineering -50,734.00

Total $707,536.00

Pending Change Orders Description Action

Contract Change Order No. 010 Five (5) Issues, including Ross Valley Interceptor Bridge $74,283.00

Amendment to Extra Work Order No. 01

Installation work for barscreens and washer compactors Documents

for signature

Issue #087 Upon review of the fuel system for the diesel engines through the RFI process, Carollo Engineers recommended a size increase for the fuel oil supply and return lines.

Cost proposal

requested.

Issue #114 Coating of existing decks and repair of existing expansion joints

Cost proposal in

review.

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Issue #121 Modifications to Primary Clarifier Concrete to accommodate helical scum skimmer equipment per Design Clarification No. 06

Cost proposal

requested. 10. Apprentices

Five apprentices (one electrical, one general laborer, two carpenter, and one reinforcing steel) worked on the project throughout the month of February.

Work Activities planned for March 2009:

• Begin concrete placement for Effluent Pump Station roof • Concrete placement of fuel trench and diesel fuel tank pad • Continue installation of piping and supports in Chlorine Contact Tanks • Continue patching and sacking concrete surfaces of Chlorine Contact Tanks and Effluent

Pump Station • Continue to form and place walls, stairs and landings and for the Primary Clarifier

Influent Channel • Continue to form and place concrete for Primary Clarifier Nos. 6 & 7 base slab and wall

sections • Complete concrete placement in Primary Clarifier Retrofit area • Continue installation of mechanical equipment in several areas • Continue Material and Equipment Procurement • Continue to receive equipment (Pumps, Valves, etc.) • Continue to forward submittals for review, including monthly schedule update.

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Wet Weather Improvements February 2009Photos taken 02.27.09

Progress Photo 01 – Effluent Pump Station Overview Upper Walls with forms

Progress Photo 02 – Effluent Pump Station – 10-Inch Tank Drain Line with check valve

Wet Weather Improvements February 2009Photos taken 02.27.09

Progress Photo 03 - Chlorine Contact Tank Nos. 6 & 7 Overview (looking east)

Progress Photo 04 – Chlorine Contact Tank Nos. 6 & 7 Overview (looking west)

Wet Weather Improvements February 2009Photos taken 02.27.09

Progress Photo 05 – Chlorine Contact Tanks and Effluent Pump Station Overview looking East

Progress Photo 06 – Primary Clarifier Tank Overview looking West

Wet Weather Improvements February 2009Photos taken 02.27.09

Progress Photo 07 – Primary Clarifier Tank No. 5 Overview.

Progress Photo 08 – Gallery A Extension and Primary Influent Channel.

Wet Weather Improvements February 2009Photos taken 02.27.09

Progress Photo 09 – New Beam over Gallery A/B Door

Progress Photo 10 – Primary Clarifier Influent Channel Connection in retrofit area

Wet Weather Improvements February 2009Photos taken 02.27.09

Progress Photo 11 – Primary Clarifier Retrofit and Influent Channel Connection Exterior

Progress Photo 12 – Polymer Facility with replacement Tank set in place

CMSA - Wet Weather Improvement

Job No:Project No: Page:Page: 1 of 11 of 1

Date: 2/27/200907-01061-0491.01

Open Requests for Information

Status Request Dated Responded RequiredIssueRFI Number From To TitleChange

Central Marin Sanitation Agency

2/27/2009 3/6/2009Western Water has found that there is missinginformation in Spec Section 13485 - Instrument Index.We have compiled the information from Spec Section15120 - Piping Specialties Page 15, TI-5 and TI-6 TypicalDetails Instrumentation, and TM-2 Typical DetailsMechanical into the attached 13485 Instrument Index.After compiling this information, we have generated alist of Questions and Requests which are listed in"COLUMN "W". Please provide the requestedinformation.

OPN00142 WESTWATR HARRIS Instrument Index Clarification

Report r_a_rfi_03_harris

Item No.

CMSA - Wet Weather Improvement

Open Submittal Log - Sorted by Submittal No.

Project No:Job No: 07-01

061-0491.01 Page:Date: 2/27/2009

1 of 1

Submittal TitlePackage Rev. FinishRequired

Status Rcvd. Sent Return Forward BICLatest Dates

Central Marin Sanitation Agency

247 Reinforcing Steel - EPS Upper Slab03200-EPS Upper 03200 001 R&R 8/18/2008 8/19/2008 9/5/2008 WESTWATR9/8/2008

258 Reinforcing Steel - PC Blending Chn03200-PC Blend 03200 001 R&R 9/30/2008 9/30/2008 10/16/2008 WESTWATR10/16/2008

266 Reinforcing Steel - PC Stairs/Ramps03200-PC Stairs 03200 001 OPN 1/23/2009 1/26/2009 CAROLLO

253 Reinforcing Steel - PC Upper Slab03200-PC Up Slb 03200 001 R&R 9/2/2008 9/3/2008 9/17/2008 WESTWATR9/23/2008

262 Reinforcing Steel for PC Upper Wall03200-PC Upper 03200 002 OPN 2/19/2009 2/23/2009 CAROLLO

273 Misc. FRP Wiers, Pickets, Mntng Pan06611-1.05-A 06611 001 OPN 2/24/2009 2/25/2009 CAROLLO

183OM Fabricated Slide Gates - O&M Manual11293-1.04-O&M 11293 001 OPN 2/5/2009 2/10/2009 CAROLLO

183OM Cast Iron Sluice Gates - O&M Manual11294-1.04-O&M 11294 001 OPN 2/5/2009 2/10/2009 CAROLLO

150OM Progressing Cavity Pumps O&M Manual11312I-1.05-F 11312I 001 OPN 2/17/2009 2/18/2009 CAROLLO

HW01 Headworks Perforated Plate Screens11332C 002 OPN 2/19/2009 2/19/2009 CAROLLO

HW01 Headworks Barscreens QC Manual11332C & 11333C 002 OPN 12/23/2008 1/5/2008 CAROLLO

HW01 Headworks Washer Compactor System11333C 002 OPN 2/19/2009 2/19/2009 CAROLLO

236 Chemical Induction Mixer11348-1.04 11348 003 OPN 2/6/2009 2/6/2009 CAROLLO

189 1.04-A Product Data11351-001 11351 002 R&R 6/10/2008 6/11/2008 9/8/2008 WESTWATR9/9/2008

189 1.04-B Shop Dwgs. & Calculations11351-002 11351 002 R&R 6/10/2008 6/11/2008 9/8/2008 WESTWATR9/9/2008

189 1.04-C Manufacturer's Dwgs11351-003 11351 002 R&R 6/10/2008 6/11/2008 9/8/2008 WESTWATR9/9/2008

189 1.04-D.2 Manufacturer's Instruct.11351-004 11351 002 R&R 6/10/2008 6/11/2008 9/8/2008 WESTWATR9/9/2008

189 1.05-A.2 List of Installations11351-005 11351 002 R&R 6/10/2008 6/11/2008 9/8/2008 WESTWATR9/9/2008

189 1.08 Warranty11351-006 11351 002 R&R 6/10/2008 6/11/2008 9/8/2008 WESTWATR9/9/2008

189 1.09-B.2 Spare Parts List11351-007 11351 002 R&R 6/10/2008 6/11/2008 9/8/2008 WESTWATR9/9/2008

274 FRP Launders & Baffle Walls13120-1.03-A.1 13120 001 OPN 2/24/2009 2/25/2009 CAROLLO

275 FRP Launders & Baffle Wall Calcs.13120-1.03-A.4 13120 001 OPN 2/24/2009 2/25/2009 CAROLLO

163 Above Ground Fuel Storage Tank13209-1.04 13209 005 OPN 2/10/2009 2/11/2009 CAROLLO

137 Pressure Gauges & Switches13424-2.04 13424 002 OPN 2/19/2009 2/23/2009 CAROLLO

243 Instrument & Control Panels13442-1.04-A 13442 001 R&R 7/22/2008 7/25/2008 9/8/2008 WESTWATR9/9/2008

183OM Hydraulic Cylinder Operators - O&M13445-1.04-O&M 13445 001 OPN 2/6/2009 2/10/2009 CAROLLO

183OM Valve & Gate Operators - O&M Manual13446-1.04-O&M 13446 001 OPN 2/6/2009 2/10/2009 CAROLLO

183OM Motorized Operators - O&M Manual13447-1.04-O&M 13447 001 OPN 2/6/2009 2/10/2009 CAROLLO

243 Uninterruptible Power Supply13451-1.02-A 13451 001 R&R 7/22/2008 7/25/2008 9/8/2008 WESTWATR9/9/2008

199T RTU Panel Factory Test Reports13452-1.06-D 13452 001 OPN 2/18/2009 2/18/2009 CAROLLO

245 Fire Alarm - Product Data13851-1.08-B 13851 002 OPN 2/10/2009 2/10/2009 CAROLLO

245 Fire Alarm - Shop Drawings13851-1.09-B 13851 002 OPN 2/10/2009 2/10/2009 CAROLLO

272 Pre-Action Sprinkler System - PIV13930-1.10 13930 001 OPN 2/24/2009 2/24/2009 CAROLLO

271 Gate Valves15115-2.01 15115 001 OPN 2/24/2009 2/24/2009 CAROLLO

270 4-Way Plug Valve per RFI 12115116-4Way 15116 001 OPN 2/5/2009 2/6/2009 CAROLLO

250 Control Valve for Solenoid15117-2.06 15117 001 R&R 8/20/2008 8/20/2008 10/24/2008 WESTWATR10/28/2008

264 Pressure Relief Valves - Chemical15118-2.05 15118 001 R&R 2/2/2009 2/3/2009 2/11/2009 WESTWATR2/18/2009

187 FRP Ductwork - Calculations15814-1.03-C 15814 001 OPN 2/10/2009 2/10/2009 CAROLLO

226 Air Handling Units - Shop Drawings15855-1.04-A 15855 002 R&R 10/27/2008 10/28/2008 12/1/2008 WESTWATR12/2/2008

200 Low Voltage Distribution Transform16273-1.03-A 16273 001 R&R 3/12/2008 3/13/2008 4/1/2008 WESTWATR4/3/2008

231 600V Motor Control Center - Shp Dwg16342-1.04-A 16342 003 OPN 2/12/2009 2/12/2009 CAROLLO

Report r_sb_01_c_01