Mailout MSO 2008-01, Compliance Assistance & Certification Workshop Mailout MSO 2008-01, Compliance Assistance & Certification Workshop For HMC, OHRV, SORE & Equipment. Workshop held at CARB on February 20, 2008.Mailout MSO 2008-01, Compliance Assistance & Certification Workshop For highway motorcycles (HMC), off-highway recreational vehicles (OHRV), small off-road engines < 19 kW (SORE) & SORE Equipment. Documents Mailout MSO 2008-01 MSO0801_R_0.PDF · 43 KB SORE/HMC/OHRV Certification and Compliance Workshop Presentation (updated November 9, 2015) Original Presentation ORIGINAL PRESENTATION_R.PDF · 4.35 MB Handout For DMS Workshop, Feb. 1, 2006. HOUT020106_AC.PDF · 826 KB