The proposal will include identifying whether the suppliers will accept a Humble Independent School District purchase order, credit cards or other acceptable payments. Proposers are prohibited from communicating with District Trustees, employees, or agents of the District regarding this RFP from the date of issue to the public until an award has been approved by the Board of Trustees. All vendor communications regarding this RFP must be submitted on the questions tab in the online bidding system. All questions received and the corresponding answers will be distributed to all registered suppliers through the questions tab. It is the proposers’ responsibility to review these questions and responses in order to stay informed on any clarifications on the projects. Any changes in scope, specifications, or changes altering the responses will be issued in the form of an addendum. No verbal responses will be provided. The deadline for questions is noted in the District’s online bidding system and each interested respondent should be aware of this date and time cut-off. The District will not respond to questions after this time and date. Any issued addenda may require acknowledgement on the line items tab in the online bidding system.