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Federal Register / Vol. 86, No. 97 / Friday, May 21, 2021 / Rules and Regulations to comply with the provisions of 62.16714b and c. Once the owner or operator begins to comply with the provisions of 63.1961 of this chapter, the owner or operator must continue to operate the collection and control device according to those provisions and cannot return to the provisions of this section.
a Each owner or operator seeking to comply with 62.16714b2 for an active gas collection system must install a sampling port and a thermometer, other temperature measuring device, or an access port for temperature measurements at each wellhead and:
1 Measure the gauge pressure in the gas collection header on a monthly basis as provided in 62.16720a3; and 2 Monitor nitrogen or oxygen concentration in the landfill gas on a monthly basis as follows:
i The nitrogen level must be determined using EPA Method 3C of appendix A2 of 40 CFR part 60, unless an alternative test method is established as allowed by 62.16724d2.
ii Unless an alternative test method is established as allowed by 62.16724d2, the oxygen level must be determined by an oxygen meter using EPA Method 3A of appendix A7 of 40
CFR part 60, EPA Method 3C of appendix A7 of 40 CFR part 60, or ASTM D652211. Determine the oxygen level by an oxygen meter using EPA
Method 3A, 3C, or ASTM D652211 if sample location is prior to combustion except that:
A The span must be set between 10and 12-percent oxygen;
B A data recorder is not required;
C Only two calibration gases are required, a zero and span;
D A calibration error check is not required;
E The allowable sample bias, zero drift, and calibration drift are 10
percent.
iii A portable gas composition analyzer may be used to monitor the oxygen levels provided:
A The analyzer is calibrated; and B The analyzer meets all quality assurance and quality control requirements for EPA Method 3A or ASTM D652211.
3 Monitor temperature of the landfill gas on a monthly basis as provided in 62.16720a4. The temperature measuring device must be calibrated annually using the procedure in 40 CFR
part 60, appendix A1, EPA Method 2, section 10.3.
b Each owner or operator seeking to comply with 62.16714c using an enclosed combustor must calibrate, maintain, and operate according to the
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manufacturers specifications, the following equipment:
1 A temperature monitoring device equipped with a continuous recorder and having a minimum accuracy of 1
percent of the temperature being measured expressed in degrees Celsius or 0.5 degrees Celsius, whichever is greater. A temperature monitoring device is not required for boilers or process heaters with design heat input capacity equal to or greater than 44
megawatts.
2 A device that records flow to the control device and bypass of the control device if applicable. The owner or operator must:
i Install, calibrate, and maintain a gas flow rate measuring device that must record the flow to the control device at least every 15 minutes; and ii Secure the bypass line valve in the closed position with a car-seal or a lockand-key type configuration. A visual inspection of the seal or closure mechanism must be performed at least once every month to ensure that the valve is maintained in the closed position and that the gas flow is not diverted through the bypass line.
c Each owner or operator seeking to comply with 62.16714c using a nonenclosed flare must install, calibrate, maintain, and operate according to the manufacturers specifications the following equipment:
1 A heat sensing device, such as an ultraviolet beam sensor or thermocouple, at the pilot light or the flame itself to indicate the continuous presence of a flame.
2 A device that records flow to the flare and bypass of the flare if applicable. The owner or operator must:
i Install, calibrate, and maintain a gas flow rate measuring device that records the flow to the control device at least every 15 minutes; and ii Secure the bypass line valve in the closed position with a car-seal or a lockand-key type configuration. A visual inspection of the seal or closure mechanism must be performed at least once every month to ensure that the valve is maintained in the closed position and that the gas flow is not diverted through the bypass line.
d Each owner or operator seeking to demonstrate compliance with 62.16714c using a device other than a non-enclosed flare or an enclosed combustor or a treatment system must provide information satisfactory to the Administrator as provided in 62.16724d2 describing the operation of the control device, the operating parameters that would indicate proper performance, and
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appropriate monitoring procedures. The Administrator must review the information and either approve it, or request that additional information be submitted. The Administrator may specify additional appropriate monitoring procedures.
e Each owner or operator seeking to install a collection system that does not meet the specifications in 62.16728 or seeking to monitor alternative parameters to those required by 62.16716 through 62.16722 must provide information satisfactory to the Administrator as provided in 62.16724d2 and 3 describing the design and operation of the collection system, the operating parameters that would indicate proper performance, and appropriate monitoring procedures. The Administrator may specify additional appropriate monitoring procedures.
f Each owner or operator seeking to demonstrate compliance with the 500
parts-per-million surface methane operational standard in 62.16716d must monitor surface concentrations of methane according to the procedures provided in 62.16720c and the instrument specifications in 62.16720d. Any closed landfill that has no monitored exceedances of the operational standard in three consecutive quarterly monitoring periods may skip to annual monitoring.
Any methane reading of 500 parts-permillion or more above background detected during the annual monitoring returns the frequency for that landfill to quarterly monitoring.
g Each owner or operator seeking to demonstrate compliance with the control system requirements in 62.16714c using a landfill gas treatment system must maintain and operate all monitoring systems associated with the treatment system in accordance with the site-specific treatment system monitoring plan required in 62.16726b5ii and must calibrate, maintain, and operate according to the manufacturers specifications a device that records flow to the treatment system and bypass of the treatment system if applicable. The owner or operator must:
1 Install, calibrate, and maintain a gas flow rate measuring device that records the flow to the treatment system at least every 15 minutes; and 2 Secure the bypass line valve in the closed position with a car-seal or a lockand-key type configuration. A visual inspection of the seal or closure mechanism must be performed at least once every month to ensure that the valve is maintained in the closed position and that the gas flow is not diverted through the bypass line.

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