Section 300.315 - Phase IV-Documentation and cost recovery(a) All OSLTF users need to collect and maintain documentation to support all actions taken under the CWA. In general, documentation shall be sufficient to support full cost recovery for resources utilized and shall identify the source and circumstances of the incident, the responsible party or parties, and impacts and potential impacts to public health and welfare and the environment. Documentation procedures are contained in 33 CFR part 136.(b) When appropriate, documentation shall also be collected for scientific understanding of the environment and for research and development of improved response methods and technology. Funding for these actions is restricted by section 6002 of the OPA.(c) OSCs shall submit OSC reports to the NRT or RRT, only if requested, as provided by § 300.165 .(d) OSCs shall ensure the necessary collection and safeguarding of information, samples, and reports. Samples and information shall be gathered expeditiously during the response to ensure an accurate record of the impacts incurred. Documentation materials shall be made available to the trustees of affected natural resources. The OSC shall make available to trustees of the affected natural resources information and documentation in the OSC's possession that can assist the trustees in the determination of actual or potential natural resource injuries.(e) Information and reports obtained by the EPA or USCG OSC shall be transmitted to the appropriate offices responsible for follow-up actions.