Section 2644 - Non-Visual Monitoring/Qualitative Release Detection Methods(a) An owner or operator who is required, pursuant to section 2641, to establish a non-visual monitoring program, shall comply with the requirements of this section if a qualitative release detection method is used. Each qualitative release detection method, including interstitial monitors, shall have an independent third party evaluation to certify accuracy and response time of the detection method in accordance with procedures in Appendix IV. Examples of qualitative release detection methods that may be used are in Appendix III.(b) If vadose zone monitoring is used as a release detection method, it shall be conducted in accordance with section 2647.(c) If ground water monitoring is used as a release detection method, it shall be conducted in accordance with section 2648.(d) A qualitative release detection method which includes the installation of monitoring wells or drilling other borings shall comply with installation, construction, and sampling and analysis procedures in section 2649.(e) Underground pressurized piping that is monitored at least once every 30 days by a non-visual qualitative release detection method satisfies the tightness test requirement of section 25292(e) of the Health and Safety Code.Cal. Code Regs. Tit. 23, § 2644
1. Renumbering and amendment of former section 2644 to section 2646 and new section filed 8-9-91 as an emergency; operative 8-9-91. Text remains in effect uninterrupted pursuant to Health and Safety Code section 25299.7 (Register 92, No. 14).
2. Editorial correction of printing errors in HISTORY 1 (Register 92, No. 43).
3. Amendment filed 4-5-94; operative 5-5-94 (Register 94, No. 14).
4. Amendment of subsections (a) and (e) and amendment of NOTE filed 8-27-2018; operative 10-1-2018 (Register 2018, No. 35). Note: Authority cited: Sections 25299.3 and 25299.7, Health and Safety Code. Reference: Section 25292, Health and Safety Code; and 40 CFR 280.41, 280.43 and 280.44.
1. Renumbering and amendment of former section 2644 to section 2646 and new section filed 8-9-91 as an emergency; operative 8-9-91. Text remains in effect uninterrupted pursuant to Health and Safety Code section 25299.7 (Register 92, No. 14).
2. Editorial correction of printing errors in History 1 (Register 92, No. 43).
3. Amendment filed 4-5-94; operative 5-5-94 (Register 94, No. 14).
4. Amendment of subsections (a) and (e) and amendment of Note filed 8-27-2018; operative 10/1/2018 (Register 2018, No. 35).