Again, my apologies for the delay in responding to you - this is not the way we want to deal with community concerns and we're working to be more responsive in the future.
Under s.4.2 of the EES Scoping Requirements, the biodiversity requires the assessment of impact such as, entrainment, discharges, noise in relation to flora and fauna and leaks or spills. This includes the discharge from the defouling system that includes an amount of chlorine.
To find the EES scoping requirements, see: https://www.planning.vic.gov.au/__data/assets/pdf_file/0031/409936/Att-1_Crib-Point-EES-scoping-requ...
The technical studies relating to the chlorine discharge are currently underway, however once finalised the EES will be made publicly available and you will be able to make a written submission on the EES during the exhibition period.