GENERAL ENGINEERING CONTRACTOR PHONE (951) 738-8211
License # 569693 FAX (951) 738-8215
P.O. Box 77055, Corona, CA 92877
June 13, 2025 – Rev. 2 Final Doc.
City of Corona
400 S. Vincent Avenue
Corona, CA. 92882
Attn: Michael Mojica – Project Manager
Ref: Lester WTP – Post Chlorination & Static Mixer Vault Project Subject: P.C.O. #02 – Project Postponement Requested by the City Dear Michael,
RC Foster would like to offer our proposal for the above captioned extra work as outlined below and attached.
Due to unforeseen circumstances, the city requested this project be postponed for 1-year (1-6- 2025 to 1-6-2026) to avoid a potential water shortage to City residents.
Attached is a list of Extra Work Reports (EWR) showing the additional costs incurred by shutting down the work, backfilling and securing the work area, demobilizing and remobilizing along with the associated overhead recovery expense for the remaining 3-month contract period.
Total Cost: = $176,971.22
Note: The total cost above does not include any future price escalations currently unknown.
Work activities such as concrete, rebar installation, stairs, painting, forming and electrical have yet to be performed and RC Foster reserves the right to reimbursement for any unforeseen material and/or subcontractor price escalation through this 1-year period of delay. Materials stored on site are considered acceptable and ready for installation.
Thank you for your consideration of our proposal, please contact me if you have any questions.
Sincerely,
Paul Schuessler
R C Foster Corporation
Extra Work Report #1 – Total Cost = $8,882.90 – Begin demobilizing site and backfilling excavated areas to safe limits, secure site.
Extra Work Report #2 – Total Cost = $6,138.61 – Continue demobilization and backfill of excavated areas, secure site.
Extra Work Report #3 – Total Cost = $5,422.97 – Complete demobilization work and securing site.
Extra Work Report #4 – Total Cost = $13,726.42 – Rentals & job equipment standby for 2-month period before postponement (January & February 2025).
Extra Work Report #5 – Total Cost = $15,056.68 – Re-excavation and stockpile at vault area upon re-mobilization around January 2026.
Extra Work Report #6 – Total Cost = $29,037.53 – 1-year builders risk insurance extension, temporary safety & storage facilities including monthly maintenance and labor prevailing wage increase effective July 2025.
Extra Work Report #7 – Total Cost = $98,706.11 – Balance of work overhead recovery expense @ 46% of $136,367.00 (Total Project OH in Bid) and remobilization to site in January 2026.
EXTRA WORK REPORT Sheet 1 of
PROJECT: Corona - Lester WTP - Post Chlorination Vault DESCRIPTION OF WORK: Remobilization and Overhead Recovery Expense for the remaining of work to be performed.
PCO #: 02
DATE: TBD
LOCATION: City of Corona EWR #7
NO. EQUIPMENT HOURS RATE AMOUNT NO. LABOR HOURS RATE AMOUNT TOOL/SERVICE TRUCK $54.71 $0.00 FOREMAN REG $136.85 $0.00 BACKHOE $85.75 $0.00 FOREMAN OT $205.27 $0.00
SKYTRAK FORKLIFT $78.87 $0.00 OPERATOR REG $126.50 $0.00 DUMP TRUCK $93.61 $0.00 OPERATOR OT $189.75 $0.00
SKIPLOADER $53.08 $0.00 TEAMSTER REG $95.57 $0.00
BREAKER ATTACHMENT $12.97 $0.00 TEAMSTER OT $143.35 $0.00 GENERATOR $75.08 $0.00 LABORER REG $96.77 $0.00
AIR COMPRESSOR $28.54 $0.00 LABORER OT $145.15 $0.00
SCISSOR LIFT $26.20 $0.00 CARPENTER REG $104.32 $0.00
SKID STEER $37.71 $0.00 CARPENTER OT $156.48 $0.00
(not all equipment shown) $0.00 WELDER REG $98.87 $0.00 EQUIPMENT SUBTOTAL: $0.00 WELDER OT $148.30 $0.00
LABOR SUBTOTAL: $0.00
MATERIALS UNIT UNIT COST AMOUNT
$0.00 OTHER COSTS AMOUNT
$0.00 Overhead Recovery Expense - 46% of $136,367 (Total Project $62,728.82 $0.00 Overhead in Bid)
$0.00 Re-Mobilization - January 2026 $35,000.00
$0.00
$0.00
$0.00 OTHER COST SUBTOTAL: $97,728.82
$0.00
$0.00 EQUIPMENT SUBTOTAL $0.00
$0.00 MATERIALS SUBTOTAL $0.00
$0.00 SUBCONTRACTORS SUBTOTAL $0.00
MATERIALS SUBTOTAL: $0.00 LABOR SUBTOTAL $0.00
OTHER SUBTOTAL $97,728.82
SUBCONTRACTORS AMOUNT MARKUP ON EQUIPMENT 0% $0.00
$0.00 MARKUP ON MATERIALS 0% $0.00
$0.00 MARKUP ON SUBCONTRACTORS 0% $0.00
$0.00 MARKUP ON LABOR 0% $0.00
SUBCONTRACTORS SUBTOTAL: $0.00 MARKUP ON OTHER COSTS 0% $0.00 SUBTOTAL $97,728.82
Signature: BOND 1.00% $977.29
TOTAL COST OF THIS EXTRA WORK: $98,706.11