I bookmarked the PCA BCO with the 2012 revisions. It can be found in PDF on this page:
E-Books | Hope of Christ Church
The direct link is:
http://www.hopeofchrist.net/e-book/PCA-BCO-2012.pdf
E-Books | Hope of Christ Church
The direct link is:
http://www.hopeofchrist.net/e-book/PCA-BCO-2012.pdf