The Chief may, at any time, take samples from any Christmas tree or decoration and field test the specimen in accordance with NFPA 705, Chapter 4. The field test shall be performed in a safe location, using a common flame applied for 12 seconds of exposure to the sample. During the exposure, flaming shall not spread over the complete length of the sample, or in excess of 4 inches from the bottom of the sample for larger sample sizes. After flame shall not be more than two seconds. Materials which break and drip flaming particles shall be considered hazardous. Christmas trees or any decorations determined by the Chief to be a fire hazard shall be immediately removed from the building.