b) The Agency will respond to a request for records to be used for a commercial purpose within 21 working days after receipt. The response will:

1. 1) Provide to the requester an estimate of the time required by the Agency to provide the records requested and an estimate of the fees to be charged, which the Agency may require the person to pay in full before copying the requested documents;
2. 2) Deny the request pursuant to one or more of the exemptions set out in Section 1651.202 or 1651.203;
3. 3) Notify the requester that the request is unduly burdensome and extend an opportunity to the requester to attempt to reduce the request to manageable proportions; or

c) Unless the records are exempt from disclosure, the Agency will comply with a request within a reasonable period considering the size and complexity of the request, and giving priority to records requested for non-commercial purposes.

(Section 3.1(b) of FOIA)