D.10-01-022 was effective on January 21, 2010. Rule 16.4(d) of the Commission's Rules of Practice and Procedure requires petitions to be filed and served within one year of the effective date of the decision. If more than one year has elapsed, the petition must explain why the petition could not have been presented within one year. EchoFirst explains its petition was not filed earlier because it did not realize that the Commission would not accept SRCC certification performed by entities other than SRCC until discussion with Commission Energy Division Staff in April 2011. Therefore, EchoFirst requests that its petition be accepted despite the fact it is beyond the one year effective date of D.10-01-022. EchoFirst provides a reasonable explanation for filing its petition beyond the one year effective date of D.10-01-022. We will accept and consider EchoFirst's petition.