Addendum 1 Questions and Answers (4).docx

This is an Addendum 1 Questions and Answers document for the Pueblo Regional Center Hub A Boiler Replacement project in Colorado, dated July 27, 2026. The addendum addresses two critical technical inquiries from prospective bidders regarding the project scope. The first question concerns the electrical capacity of panel LA2 for accommodating a new 3-pole breaker required for pump installation, with the response clarifying that while LA2 has no spare breaker capacity, panel LA1 contains four available breakers that could serve this purpose. The second question addresses the current natural gas pressure feeding the existing boiler, with the response indicating that incoming service pressure is approximately 2 psi, though the respondent acknowledges this has not been personally verified with a gauge and suggests confirming whether Preston's recollection of less than 2 psi is accurate through an actual pressure reading at the service entrance.

The addendum provides technical specifications noting that most boilers require a minimum inlet pressure of 5 to 7 inches of water column and a maximum of 14 inches of water column, establishing baseline requirements for the natural gas system design. This clarification is essential for bidders to accurately assess electrical and mechanical modifications needed for the boiler replacement, ensuring proposals account for potential panel upgrades or additional pressure regulation equipment that may be necessary to meet equipment specifications.