In the area of this installation:
The pedestal is the POCOs. They install it and anything prior to it. Their responsibility.
The customers EC installs the underground from pedestal to house. The EC terminates both ends. Once the meter is installed, the EC has no access to the meter base connections without POCOs permission. Typically the EC cannot remove the meter.
In the past, the inspector may happen to be there prior to meter installation, but not necessarily. IDK if that’s changed in the last few years. My inspectors at the time would normally say go ahead and cover and they would give POCO permission to energize.
Other POCOs in the State have their own rules.