Section 7507. Award; form; time; delivery

Except as provided in section
  7508, the award  shall  be  in  writing,  signed  and  affirmed  by  the
  arbitrator  making it within the time fixed by the agreement, or, if the
  time is not fixed, within such time as the court orders. The parties may
  in writing extend the time either before  or  after  its  expiration.  A
  party  waives  the  objection that an award was not made within the time
  required unless he notifies the arbitrator in writing of  his  objection
  prior to the delivery of the award to him.  The arbitrator shall deliver
  a  copy  of  the  award  to  each  party  in  the manner provided in the
  agreement, or, if no provision is so made, personally or  by  registered
  or certified mail, return receipt requested.