25 Pa. Code § 127.511 : ENVIRONMENTAL PROTECTION — DEPARTMENT OF ENVIRONMENTAL PROTECTION — Protection Of Natural Resources — AIR RESOURCES — CONSTRUCTION, MODIFICATION, REACTIVATION AND OPERATION OF SOURCES — TITLE V OPERATING PERMITS —PERMIT CONDITIONS — Monitoring and related recordkeeping and reporting requirements

(a) Each permit shall contain the following requirements with respect to monitoring:
(1) Emissions monitoring and analysis procedures or test methods required under the applicable requirements, including procedures and methods under sections 114(a)(3) or 504(b) of the Clean Air Act ( 42 U.S.C.A. §§ 7414(a)(3) and 7661c(b) ).
(2) When the applicable requirement does not require periodic testing or instrumental or noninstrumental monitoring, which may consist of recordkeeping designed to serve as monitoring, periodic monitoring sufficient to yield accurate and reliable data from the relevant time that are representative of the source's compliance with the permit, as reported under subsection (c). The monitoring requirements shall assure use of terms, test methods, units, averaging periods and other statistical conventions are consistent with the applicable requirement. Recordkeeping provisions may be sufficient to meet the requirements of this subsection.
(3) Requirements concerning the use, maintenance and, when appropriate, installation of monitoring equipment or methods, as necessary.
(b) With respect to recordkeeping, the permit shall incorporate applicable recordkeeping requirements and require, when applicable, the following:
(1) Records of required monitoring information that include the following:
(i) The date, place as defined in the permit, and time of sampling or measurements.
(ii) The dates the analyses were performed.
(iii) The company or entity that performed the analyses.
(iv) The analytical techniques or methods used.
(v) The results of the analyses.
(vi) The operating conditions as existing at the time of sampling or measurement.
(2) Retention of records of the required monitoring data and supporting information for at least 5 years from the date of the monitoring sample, measurement, report or application. Supporting information includes calibration and maintenance records and original strip-chart recordings for continuous monitoring instrumentation, and copies of reports required by the permit.
(c) With respect to reporting, the permit shall incorporate the applicable reporting requirements and require the following:
(1) Submittal of reports of required monitoring at least every 6 months. Instances of deviations from permit requirements shall be clearly identified in the reports. Required reports shall be certified by a responsible official.
(2) Reporting of deviations from permit requirements within the time required by the terms and conditions of the permit including those attributable to upset conditions as defined in the permit, the probable cause of the deviations and corrective actions or preventive measures taken, except that sources with continuous emission monitoring systems shall report according to the protocol established and approved by the Department for the source.

25 Pa. Code § 127.511