I’ve set up an OERu quality group on hypothes.is - You can join the group once you’ve set up your account on hypothes.is.
(The OERu support site provides a few tips in getting started with hypthes.is.)
You can go to the direct link to post annotations.
Alternatively, go to the document online and launch hypothesis using browser extension for chrome or bookmarket for other browsers. (Not sure if IE is supported?): http://ccconlineed.org/wp-content/uploads/2015/11/OEI_Rubric_Edited-ACC.pdf
Make sure you post comments via the OERu quality group on Hypothes.is