Due to the implementation of the archaeology mitigation 3.20, (which requires ROV surveys to be performed by operators) there is no longer a requirement for such surveys previously required as described in NTL 2008-G06, which is no longer in effect.
Please consult the requirements of Archaeology mitigation 3.20 which can be found at the following link - www.boem.gov/Conditional-Archaeological-Mitigation/
Please note that the Grid EA map page has therefore been removed, as the related requirements for ROV surveys are no longer in effect.