MACT – Subpart ZZZZ (4Z)

Reciprocating Internal Combustion Engines (R.I.C.E.)

EPA Enforcement Workshop

Joe Foutz November 15, 2012NC DAQ Charlotte, NCMooresville Regional Office

MACT – Subpart ZZZZ (4Z)

If you have a …..

Stationary Reciprocating Internal Combustion

Engine (R.I.C.E.)

You’re Subject !!

MACT – Subpart ZZZZ (4Z)

Compliance Date

Existing CI at Area Source May 3, 2013

Existing SI at Area Source October 19, 2013

NC – Engine Population (with an Air Permit)

Estimated Number of Existing Engines Potentially Subject to 4Z

Engine Type Size Number of Engines at Permitted Facilities

Percent of Engines Located at Area Sources

Existing Non-Emergency Engines

Compression Ignition (CI)

> 300 hp 344 82% ≤ 300 hp 606 58%

Spark Ignition (SI)

> 500 hp 64 31% ≤ 500 hp 67 54%

Existing Emergency and Other Engines

all sizes 1,423 52%

Grand Total

2,504 57%

MRO – Engine Population

TOTAL Engines 336

CI Engines at Area Source w/ Emission Limit 42

CI Emergency at Area Source 86

SI Emergency at Area Source 24

New Emergency at Area Source 73

New Non-Emerg. at Area Source 28

Emergency Major Source 47

Assorted Others 36

Emission Limits

Area Source – Non Emergency- Existing CI (Table 2d)

- 300 < HP ≤ 500 : CO conc. of 49 ppmvd or 70% CO reduction

- 500 < HP : CO conc. of 23 ppmvd or 70% CO reduction

- Existing SI (Table 2d) - 500 < 4SRB : formald. conc. of 2.7 ppmvd or

76% formald. reduction - 500 < 4SLB : CO conc. of 47 ppmvd or 93 % CO

reduction

*stack test conducted at any load (40 CFR 63.6620(i)). However, pressure

drop cannot change by more than 2 inches of water at 100 % load from the

pressure drop recorded at initial performance testing (Table 2b)

Table 3 for Subsequent Stack Testing

Emission Limits

Major Source – Non Emergency- 500 < Existing or New 4SRB (Table 1a)

- 500 < New 2SLB, CI (Table 2a) - 250 ≤ New 4SLB (Table 2a)- 100 ≤ Existing CI (Table 2c)- 100 ≤ Existing 2SLB, 4SLB, 4SRB ≤ 500 HP (Table 2c)- 100 ≤ Existing Landfill Gas ≤ 500 (Table 2c)

*Stack test at 100 % of load +/- 10% for engines greater than 500 HP (40 CFR 63.6610(d)(5))

Table 3 for Subsequent Stack Testing

Stack Test Process• Submit Stack Test Protocol to NC DAQ 45

days prior to test Stationary Source Compliance Branch (SSCB) will

review and approve• Notify Regional Office 15 days prior to test

Difficult for Peak Shavers

• Regional Office may observe the stack test• Submit Stack Test Report/Results within 30

days to SSCB via Regional Office.

Non-Permitted Facilities

• Must Comply with MACT 4Z

• No Compliance Inspections

• Complaint Oriented Inspections Only

QuestionsContact : Joe Foutz

704-235-2225Joe.Foutz@ncdenr.gov

OrYour Regional Office

Asheville RO Mooresville RO Raleigh RO828.296.4500 704.663.1699 919.791.4200

Fayetteville RO Washington RO Wilmington RO910.433.3300 252.946.6481 910.796.7215

Winston-Salem RO336.771.5000