California Code of Regulations
Title 19 - Public Safety
Division 1 - State Fire Marshal
Chapter 8 - Regulations Relating to Flame Retardant Chemicals, Fabrics and Application Concerns
Article 8 - Flameproofing Certification, Labeling and Installation
Section 1326 - Retreatment

In cases where instructions are issued by the State Fire Marshal requiring retreatment or replacement of fabrics or materials previously treated with a flame-retardant chemical or registered as an approved fabric or material, the retreatment or replacement shall be made within ten (10) days after date of the order so requiring. A new certificate of flame resistance covering each such retreatment shall be delivered as for an original job as is provided for by Section 1321. A new sample of the retreated fabric or material shall be attached to the certificate of flame resistance submitted to the State Fire Marshal.