Senate committee substitute makes the following changes to 1st edition. Amends proposed GS 121-7.6 to provide that the State Historic Sites Fund (Fund) is a special, interest-bearing revenue (was, non-reverting) fund. Requires Fund revenues to be used at the individual State Historic Site were the receipts are generated and requires the Division of State Historic Sites and the staff from each site to determine how the funds will be used at that site. Clarifies that the act does not apply to the Bentonville Battlefield State Historic Site, which is subject to GS 121-7.5. Makes clarifying and organizational changes.