Code of Maine Rules
06 - DEPARTMENT OF ENVIRONMENTAL PROTECTION
096 - DEPARTMENT OF ENVIRONMENTAL PROTECTION - GENERAL
Chapter 171 - CONTROL OF PETROLEUM STORAGE FACILITIES
Section 096-171-6 - Testing and Monitoring Requirements

Universal Citation: 06 ME Code Rules ยง 096-171-6

Current through 2024-38, September 18, 2024

A. Heated Petroleum Storage Tanks. The following requirements apply to non-exempt heated petroleum storage tanks located at a petroleum storage facility.

(1) The owner or operator shall continuously monitor and record on an hourly average basis the liquid temperature for each in-service tank. This monitor shall record accurate and reliable data at least 95 percent of the source operating time in each calendar quarter. A minimum of one data point in at least two of the four distinct 15-minute quadrants constitutes a valid hour.

(2) The owner or operator shall test the tank for emissions of VOC and hazardous air pollutants (HAP) at least twice per calendar year with at least four months between tests. Testing shall occur during periods when the tank is being heated.

(3) The owner or operator shall use the results of testing to develop emission factors for both standing losses (i.e., during periods when the tank is not being filled) and working losses (i.e., during periods when the tank is actively being filled). The test data collected by the facility shall be used, as required, for reporting of annual emissions pursuant to Emission Statements, 06-096 C.M.R. ch. 137.

(4) Emissions testing shall be conducted in accordance with the facility's Performance Test Protocol as approved by the Department and the Bureau of Air Quality's Performance Testing Guidance.

(5) Emissions testing shall be performed both upstream and downstream of any odor or emissions control equipment.

(6) If a facility has more than one heated petroleum storage tank of similar construction, storing the same product, and operating in a similar manner, the owner or operator may, upon approval by the Department, conduct emissions testing on a representative tank in lieu of testing all such tanks.

B. Fenceline Monitoring. The owner or operator of a petroleum storage facility which operates a non-exempt internal or external floating roof tank shall conduct sampling along the facility property boundary and analyze the samples in accordance with 40 C.F.R. Part 63 , Appendix A, Methods 325A and 325B as amended 11/14/2018 as specified below:

(1) The monitoring program shall be designed and operated by a qualified, independent, third-party entity.

(2) The target analytes shall be benzene, ethylbenzene, toluene, and xylenes.

(3) A maximum 14-day sampling period shall be used except under extenuating circumstances as described below. Upon approval by the Department, the owner or operator may use a shorter sampling period.

When extenuating circumstances do not permit safe deployment or retrieval of passive samplers (e.g., extreme weather, power failure), sampler placement or retrieval earlier or later than the prescribed schedule is allowed but must occur as soon as safe access to sampling sites is possible.

(4) No later than three months after the effective date of this Chapter, the owner or operator shall submit for Department review and approval a site-specific fenceline monitoring plan prepared by a qualified, independent, third-party entity. This plan must include the following elements:
(a) Name and contact information for the independent, third-party entity responsible for designing and operating the monitoring program;

(b) Location of each passive monitor;

(c) Location of each licensed air emission unit;

(d) Location of potential interference from off-site sources;

(e) Location of the associated meteorological station;

(f) Identification of the sorbent to be used in the passive monitors;

(g) Procedures for deploying and recovering sorbent tubes including alternate plans for reasonably foreseeable adverse events such as extreme weather;

(h) Procedures for calibration of meteorological equipment; and

(i) Any proposed alternative to the methods or procedures contained in Methods 325A or 325B.

(5) No later than six months after approval of the site-specific fenceline monitoring plan, the owner or operator shall commence monitoring in accordance with this Chapter through use of a qualified, independent, third-party entity. In no case shall monitoring commence later than 15 months from the effective date of this rule. Monitoring must be conducted in accordance with the site-specific fenceline monitoring plan as approved by the Department.

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