Nothing I could see in the pig standard about turning/monitoring. Plenty about safe application to land, none of which difficult to comply with.dunno about pig assurance but this is not a requirement fo cattle muck. Fenced off to prevent stock getting on- yes . The heaping up as small as possible mentioned above is an NVZ requirement
Thank you @Midnight plough boy for giving me cause to check. Love a bit of compliance on a Saturday eve.