4. Determination of shared meter condition. (a) Upon a customer's
verbal or written complaint that a shared meter is measuring service to
the customer's dwelling and that the customer is responsible for the
charges for such service or upon receipt of other information indicating
that a shared meter may exist, a utility shall notify the owner in
writing of the owner's responsibilities under this section, that a
complaint was received or information obtained that a shared meter may
exist, and that the utility is required to conduct an investigation. If
such utility is not the utility in ownership or control of the meters
and related pipes, fittings, wires and other apparatus associated with
the establishment and measurement of service to such customer's
dwelling, notice shall also be provided to such metering utility. Upon
the request of an owner or upon a complaint by a customer or upon
receipt of information indicating that a shared meter may exist, such
metering utility shall investigate and determine whether such service is
or is not measured by a shared meter. Such metering utility may
determine if separate metering or rewiring or repiping is possible and
shall provide the owner with information describing how shared meter
conditions can be eliminated. The investigation shall include, but not
be limited to, conducting appropriate tests, an examination of wiring,
piping, meters and heating equipment in the building as may be needed,
an estimate of gas, electricity or steam used in the shared meter
customer's dwelling and in areas outside the dwelling, and a review of
billing records.