On Wednesday, June 30th around 0215 hours company 15 and other First battalion companies where alerted for HVAC odor in the 6800 block of Woodbridge rd. E152 (Lt.Chapmen, 4) RS15 (Sgt.Klingensmith, 5) A158 (Decker) and C15-1 responded immediately with 13 volunteers. E152 arrived first to find a 2 story home with normal conditions and deployed a hose line and established command. Chief 15-1 arrived moments later and assumed the command. E152 and RS15 operated in the investigation group along with the Hazmat group. HIRT 33 and Special Ops 50 arrived a short time later and began to meter the residence with negative results. The assignment was scaled back to HIRT33 and Special Ops 50 only.