>> well, e.m.r. stands for the experience modification rate, and it's used by the -- by osha to evaluate safety standards in the workplace. so typically, the national standard's about one. of course, a lower e.m.r. rating lower than one is better. higher than one is -- is one is worse. to my knowledge, i'm not aware of how the other city departments use the e.m.r. rating. we're currently within discussions within the p.u.c. to evaluate and establish a consistent portion of our questionnaire in order to make sure that we quantify favorable rating versus an unfavorable rating and -- for our future evaluation. >> supervisor yee: do you know if this e.m.r. rating is predependable? >> based on what i know, the e.m.r. rating is -- base odd what i understand, it's -- it's a way to normalize large firms as well as smaller firms in terms of their safety rating. obviously, if you have several incidents that are used to evaluate the rate, it would quantify your number quite a bit much more consistently than if