As per Cal. Code Regs. Tit. 2, § 2297 the master, owner, operator, or person in charge of a vessel shall maintain on board the vessel all the following documentation to demonstrate the proper functionality of the vessel’s ballast water treatment system:
(a) Printed or electronic records of applicable functionality monitoring, including calibration records, shall be kept on board the vessel for a minimum of two (2) years.
(b) Printed or electronic records of any biological monitoring performed, from at least the past two (2) years, including dates of the monitoring, the individuals or entities who performed the tests, and methods used.
(c) The ballast water treatment system type approval certificate or “Alternate Management System” letter issued by the United States Coast Guard, as applicable.
(d) Procedures in case of equipment malfunction.
https://www.law.cornell.edu/regulations/california/2-CCR-2297
Those requirements are in addition to VGP 2013 requirements (actually most of them are incorporated in the VGP).
https://www.epa.gov/vessels-marinas-and-ports/commercial-vessel-discharge-standards-frequently-asked-questions
Make sure to comply to avoid fines and deficiencies.
Saron Marine Environmental Services 