N.H. Admin. Code § Env-A 808.04

Current through Register No. 50, December 12, 2024

Section Env-A 808.04 - CEM Monitoring Plan

(a) An owner or operator of a source subject to the requirements of this part and required to install, operate, and maintain a gaseous or opacity CEM system shall submit to the department, at least 90 days prior to the installation of the CEM system, a CEM monitoring plan describing the system.

(b) Upon receipt of the CEM monitoring plan or a request submitted pursuant to (f), below, to revise a previously-approved monitoring plan, the department shall:

(1) Review the plan or proposed revision for compliance with all the elements described in this section;

(2) Determine whether the gaseous or opacity CEM system meets all requirements of this part; and

(3) Issue its decision within 30 days, provided that if the plan or proposed revision is not approved, the decision shall specify the reason(s) therefor.

(c) The monitoring plan shall provide the following:

(1) A complete description of the emission monitoring system including, but not limited to:

a. The identity of the CEM system vendor, including the company name, address, and telephone number;

b. The identity of the manufacturer, model number, serial number, measurement method employed, and range of each of the major components or analyzers being used;

c. A description of the sample gas conditioning system;

d. A description and diagram showing the location of the monitoring system, including sampling probes, sample lines, conditioning system, analyzers, any equipment required for measurement of the stack volumetric flow or fuel flow rates, and data acquisition system; and

e. A description of the data acquisition system, including sampling frequency, and data averaging methods;

(2) The mathematical equations used by the data acquisition system, including the value and derivation of any constants, to calculate and report the short-term and long-term emissions in terms of the applicable emission standards;

(3) A complete example of the data reporting format(s) to be used by the owner or operator to meet the reporting requirements for the quarterly emissions report specified in Env-A 808.14 through Env-A 808.18, including an example of any electronic report submitted to the department in order to meet the quarterly reporting requirements;

(4) A description of the analyzer calibration methods, including the frequency of calibration checks and manual calibrations, and path of the calibration gas through the system;

(5) The means used by the data acquisition system of determining and reporting periods of excess emissions, monitor downtime, and out-of-control periods;

(6) A description of the means used to provide for emissions data storage;

(7) For any source subject to Env-A 808.13(a), a description of the method(s) used to determine substitute emissions data as required by Env-A 808.13 during those periods when the permitted device is generating emissions, but the CEM system is not operating or the data from the CEM system is not valid; and

(8) For any source subject to Env-A 808.13(h), the following information:

a. A description of the calculations used to determine its annual emissions using EPA's Compilation of Air Pollutant Emission Factors, AP-42, as revised or other emission factor determined in accordance with Env-A 616;

b. An explanation of why an emission factor, as specified in a. above, is being used instead of emissions data collected by the gaseous CEM system; and

c. A comparison of the accuracy of the emissions data determined by both methods.

(d) If a proposed monitoring plan does not contain all of the information required by (c), above, or if any of the information is incomplete or inaccurate, the department shall inform the source within 30 days of receipt of the plan that it will not continue its review or issue a decision on the acceptability of the CEM as specified in (b), above, until such time as the source submits a monitoring plan that is complete and accurate.

(e) After the department has approved a CEM monitoring plan, no changes to the plan shall be made unless:

(1) The change is made to document the replacement of a CEM system component pursuant to (g), below;

(2) Prior approval from the department is obtained as specified in (f), below; or

(3) The department determines that:

a. The CEM monitoring plan must be revised to align with changes to state or federal requirements; or

b. Due to changed circumstances or discovery of additional information not previously available, the information submitted pursuant to (c), above, is no longer complete or accurate and the previously-approved CEM monitoring plan must be updated.

(f) To request a change to an approved CEM monitoring plan pursuant to (e)(2), above, the owner or operator shall submit a written request to the department that describes the proposed change and includes any information identified in (c), above, which applies to the proposed change. The department shall process the request as specified in (b) and (d), above.

(g) In the event that the owner or operator replaces a damaged or malfunctioning CEM system component in order to maintain the collection of valid CEM data, and the replacement requires the CEM system to be recertified in accordance with Env-A 808.05(e), (f), or (g), then the owner or operator shall notify the department within one working day of the replacement and shall submit a revision to the CEM monitoring plan within 30 days of the replacement if the replaced component results in a change in the information contained in the previously-approved monitoring plan.

N.H. Admin. Code § Env-A 808.04

#7788, eff 10-31-02; ss by #9802, eff 10-31-10

Amended by Volume XXXIX Number 19, Filed May 9, 2019, Proposed by #12762, Effective 5/1/2019, Expires 5/1/2029.