Section Env-Or 405.10 - Cathodic Protection Systems(a) Each cathodic protection system shall be equipped with an accessible test connection or monitor that will allow system testing without excavation.(b) A tank or piping system shall be considered cathodically protected when: (1) The tank or piping system has a negative cathodic potential of at least 850 mV with the cathodic protection applied, measured with respect to a saturated copper/copper sulfate reference electrode contacting the electrolyte;(2) The tank or piping system has a minimum of 100 mV of cathodic polarization; or(3) The requirements specified in NACE SP0285, Corrosion Control of Underground Storage Tank Systems by Cathodic Protection are met.(c) Subject to (d), below, when a cathodic protection system does not meet the requirements of (b), above, the owner shall: (1) Repair or replace the system as specified in Env-Or 405.11; or(2) If the failed cathodic protection system is not repaired within 90 days, permanently close the UST system in accordance with Env-Or 408.06 through Env-Or 408.10.(d) For any system at a facility that is subject to 42 U.S.C. 4321-4347 or 36 CFR Part 800, the time in (c)(2), above, shall be increased to 150 days.N.H. Admin. Code § Env-Or 405.10
(See Revision Note at chapter heading for Env-Or 400) #10393, eff 9-1-13
Amended by Volume XXXVIII Number 45, Filed November 8, 2018, Proposed by #12643, Effective 10/10/2018, Expires 10/10/2028.