IMCO General Construction, Inc 2/8/2024 Change Order 1

Category 2: Sensitive information Category 2: For official use only / disclosure permissible by law. PROJECT: City of Everett WFP EMERGENCY GENERATOR REPLACEMENT WO No. 3587 WORK CHANGE DIRECTIVE – No. 009 Rev 01 DATE OF ISSUANCE: October 17, 2023 You are directed to proceed promptly with the following change (s): Description: Provide additional power studies, as directed by the owner. One power study shall remove the Backwash Pump Station and the existing generator at Location 2 from the study. This study will evaluate powering the plant from the generator at Location 1. As part of the study revise the Location 2 MCC bus bracing to an AIC rating of 65kA. In an additional power study, revise the AIC rating of the Location 2 pump motor breakers and the FWPS 1 feed breaker to and AIC rating of 65kA. Per Sazan’s review comments for Submittal 041.2, provide torque control settings for the SEL- 751 relays. Purpose of WCD-009: Additional power studies are necessary to evaluate if the Location 1 generator can provide backup power for the plant, if the Backwash Pump Station is removed from the grid and powered by its own generator. Providing torque control settings for the City provided SEL-751 relays is not addressed in the project specifications. If a claim is made that the above change(s) have affected Contract Price or Contract Times, any claim for a Change Order based thereon will involve one or more of the following methods of determining the effect of the change(s). Method of determining change Method of determining change In Contract Price: in Contract Times: Lump Sum Contractor’s records Time and Material Engineer’s records Other - Other Estimated increase (decrease) in Contract Price: Estimated increase (decrease) in Contract Times: $11,826.27 Substantial Completion 0 days: If the change involves an increase, the Ready for final payment 0 days: estimated amount is not to be exceeded If the change involves an increase, the estimated without further authorization. times are not to be exceeded without further authorization. ACCEPTED: IMCO General Construction AUTHORIZED: City of Everett By: Date: By: Date: (Authorized Signature) (Authorized Signature)