40 CFR 63.8256 - What records must I keep?
(a)General records. You must keep the records in paragraphs (a)(1) and (2) of this section.
(1) A copy of each notification and report that you submitted to comply with this subpart, including all documentation supporting any initial notification or Notification of Compliance Status that you submitted, according to the requirements in § 63.10(b)(2)(xiv).
(b) Records associated with the by-product hydrogen stream and end box ventilation system vent emission limitations and the mercury thermal recovery unit vent emission limitations. You must keep the records in paragraphs (b)(1) through (5) of this section related to the emission limitations in § 63.8190(a)(2) through (3) and (b).
(2) Records of the mercury emissions monitoring conducted during the performance tests.
(3) Records of the continuous or periodic mercury emissions monitoring data.
(4) Records of the 52-week rolling average mercury emissions.
(5) Records associated with your site-specific monitoring plan required in § 63.8242(a)(3) (i.e., results of inspections, calibrations, and validation checks of each mercury concentration continuous monitoring system (CMS)).
(6) Records of chlorine production on a weekly basis.
(c) Records associated with the work practice standards.
(i) Records specified in Table 9 to this subpart related to the work practice standards in Tables 1 through 4 of this subpart.
(ii) Your current floor-level mercury vapor measurement plan.
(iii) Records of the average value calculated from at least three measurements taken according to your floor-level mercury vapor measurement plan.
(v) Records of all inspections and corrective actions taken in response to a non-maintenance related situation in which the mercury vapor concentration exceeds the floor-level mercury concentration action level.
(3) You must maintain records of the mass of virgin mercury added to cells for each reporting period.
(4) If you choose to institute a cell room monitoring program according to § 63.8192(g) of this subpart, you must keep your current cell room monitoring plan and the records specified in paragraphs (c)(4)(i) through (v) of this section.
(iii) Instances when the action level is exceeded.
(v) Records of all inspections and corrective actions taken in response to a non-maintenance related situation in which the mercury vapor concentration exceeds the action level.
(d) Records associated with the periodic monitoring option if your final control device is not a nonregenerable carbon adsorber. You must keep the records in paragraph (d)(1) through (3) of this section.