Biotechnological cleaning solutions; effective biodegradable cleaning agent (V171) to clean PFAS layers from fire suppression systems previously containing C8/ C6 AFFF, FFFP and FP; PFAS cleaning applications to remove PFAS on foam-wetted surfaces; cleaning agent in place of water to reduce foam transition costs; mitigating contamination of replacement foams; innovative technologies to regenerate the biodegradable cleaning agent for reuse