Subject: Meeting with Portland Cement Association and Affiliates – Reconsideration 

Proposal

Location: U.S. Environmental Protection Agency, Research Triangle Park, NC

Date: September 19, 2012

Participants:

Portland Cement Association (PCA)

Darren Brown Cement Association of Canada 

(by telephone)

Paul Detterline, Capitol Aggregates (by 

telephone)

Andy O’Hare, PCA

John Holmes, AEMS Inc.

Nancy Garnett, TXI (by telephone)

Curtis Lesslie, Ash Grove

Brett Lindsay, Salt River Materials

Tim Matz, Lehigh Hanson

Jason Morin, Holcim 

Dan Nugent, Buzzi Unicem

Satish Sheth, CEMEX

Michael Stevens, National (by telephone)

Bill Voshell, Argos (by telephone)

Brent Wilkerson, Monarch (by telephone)

Jay Willis, Titan

Hector Ybanez, Holcim

U.S. Environmental Protection Agency (EPA)

Keith Barnett

Sharon Nizich

Stef Johnson

Peter Tsirigotis

David Cozzie

Amy Hambrick

Elineth Torres

Lisa Conner

Ray Merrill

RTI International

Mike Laney

The purpose of the meeting was to review the issues raised by the cement industry in their 

comments on the July 18, 2012 proposed amendments to the portland cement NESHAP and 

NSPS. Attached is the meeting agenda, illustrations of the various coal mill and kiln 

configurations in the industry, and information on the number of kilns/coal mills that fit into one 

of the configurations that were supplied by the industry.
EPA – PCA Meeting

September 19, 2012

RTP, NC 

2:00–4:30 p.m., EDT

Tentative Agenda

(888) 387-8686, then 4089494

2:00 I. Introductions

2:05 II. Start-up/Shutdown Definitions/Work Practices 

2:30 III. Review/Discuss THC/o-HAP Alternative

2:45 IV. Open Clinker Piles

2:55 BREAK

Peter Tsirigotis Joins the Meeting

3:00 V. Compliance Deadline Reset

3:15 VI. Review/Discuss Coal Mill Scenarios

3:45 VII. New PM Emission Standards

4:00 VIII. Monitoring Issues, PM CMPS, HCl

4:15 IX. Other Issues/Comment on Proposal

4:25 X. Next Steps

4:30 XI. Adjourn
Kiln Fuel

(Coal, Coke, etc.) Coal

Mill

Kiln Fuel

(Coal, Coke, etc.)

Kiln

Coal Mill

Exhaust Gas

Coal Mill

Heat Source

(Natural Gas, etc.)

Kiln

Exhaust Gas

Kiln

Exhaust Gas

Kiln Fuel

(Coal, Coke, etc.) Coal

Mill

Kiln Fuel

(Coal, Coke, etc.)

Kiln

Coal Mill

Exhaust Gas

Kiln

Exhaust Gas

Stack

Kiln

Exhaust Gas

Coal Mill Kiln Exhaust Gas

Heat Source

(Natural Gas, etc.)

Emission Limits

Kiln/Coal Mill (normal operation)

Existing – NESHAP LLL

PM - 0.07 lb/ton clinker

D/F - 0.2 ng/dscm TEQ (7% O2)

Mercury - 55 lb/MM tons clinker

THC - 24 ppmvd (7% O2)

HCl - 3 ppmvd (7% O2 - only for major sources)

Monitoring Requirements

Coal Mill Stack

N/A – no stack

Kiln Stack

PM - PM CPMS, rolling 30 operating day avg

D/F - temperature CMS, rolling 3-hr avg

Activated carbon injection - record rolling 3-hr

avg injection rate & rolling 3-hr avg ACI carrier

gas parameter

Mercury - Hg CEMS or sorbent trap-based

integrated monitoring system, exhaust flow rate

monitor, 30 day rolling avg

THC - THC CEMS

HCl - (1) HCl CEMS & CPMS to monitor wet or

dry scrubber or tray tower parameters, or (2) if

equipped with wet or dry scrubber or tray tower, option to use SO2 CEMS

Clinker production - Weigh scale system

Reference §63.1350

Note: Alkali bypasses are not shown on the diagram, but any configuration could include an alkali bypass.

1a. Direct-Fired Kiln, Separate Heat Source

PMk

D/Fk

Hgk

THCk

HClk

Stack

PMk

D/Fk

Hgk

THCk

HClk

XXk - Monitoring Location for Kiln

1b. Direct-Fired Kiln, Kiln Exhaust Heat Source

1c. Combined Coal Mill / Kiln Stack, Kiln Exhaust Gas Heat Source

Kiln Fuel

(Coal, Coke, etc.) Coal Mill

Kiln Fuel

(Coal, Coke, etc.) Kiln

Kiln

Exhaust Gas

Stack

Kiln & Coal Mill

Exhaust Gas

Kiln

Exhaust

Gas

Kiln & Coal Mill

Exhaust Gas

PMk

D/Fk

Hgk

THCk

HClk

Kiln Fuel

(Coal, Coke, etc.) Coal Mill

Kiln Fuel

(Coal, Coke, etc.) Kiln

Kiln

Exhaust Gas

Stack

Kiln / Coal Mill

Exhaust Gas

Cooler/Coal Mill

Exhaust Air

Cooler

Air Cooler

PMk

D/Fk

Hgk

THCk

HClk

1d. Combined Coal Mill / Kiln Stack, Cooler Exhaust Gas Heat Source

Scenario 1. Coal Mill Exhaust Routed Through Kiln or Kiln Stack
Scenario 3. Separate Coal Mill Stack with Kiln Exhaust Heat Source

Kiln Fuel

(Coal, Coke, etc.) Coal Mill

Kiln Fuel

(Coal, Coke, etc.) Kiln

Kiln

Exhaust Gas

Stack

Kiln

Exhaust Gas Stack

Kiln & Coal Mill

Exhaust Gas

Emission Limits

Coal Mill

NESHAP Subpart LLL – same as kiln

PM – not addressed

Kiln (normal operation)

Existing – NESHAP LLL

PM - 0.07 lb/ton clinker

D/F - 0.2 ng/dscm TEQ (7% O2)

Mercury - 55 lb/MM tons clinker

THC - 24 ppmvd (7% O2)

HCl - 3 ppmvd (7% O2 - only for major sources)

Monitoring Requirements

Coal Mill Stack

PM, D/F - not addressed

Mercury - annual Hg perf test (if below method

detection for 2 consec, every 30 months), exhaust flow rate monitor [Rule text does not

specify location for Hg measurement--preamble

suggests after coal mill stack]

THC - Annual THC performance tests

[63.1349(b)(4)(i)(D) specifies THC must be

measured upstream of the coal mill]

HCl - Performance test every 30 months

[63.1349(b)(6)(c) preamble specifies THC must

be measured upstream of the coal mill

Kiln Stack

PM - PM CPMS, rolling 30 operating day avg

D/F - temperature CMS, rolling 3-hr avg

Activated carbon injection - record rolling 3-hr

avg injection rate & rolling 3-hr avg ACI carrier

gas parameter

Mercury - Hg CEMS or sorbent trap-based

integrated monitoring system, exhaust flow rate

monitor, 30 day rolling avg

THC - THC CEMS

HCl - (1) HCl CEMS & CPMS to monitor wet or

dry scrubber or tray tower parameters, or (2) if

equipped with wet or dry scrubber or tray tower, option to use SO2 CEMS

Clinker production - Weigh scale system

Reference §63.1350

Kiln Exhaust Gas

PMk

D/Fk

Hgk

THCk

HCl/SO2k THCcm (test only)

HClcm (test only)

Hgcm (test only)

Stack Gas Flow @ 7% O2

Scenario 2. Separate Coal Mill Stack with Non-Kiln Heat Source

Kiln Fuel

(Coal, Coke, etc.) Coal

Mill Kiln Fuel

(Coal, Coke, etc.)

Kiln

Coal Mill

Exhaust Gas

Coal Mill

Heat Source

(Natural Gas, etc.)

Kiln

Exhaust Gas

Stack

Kiln

Exhaust Gas Stack

Emission Limits

Coal Mill

NSPS Subpart Y

Kiln (normal operation)

Existing – NESHAP LLL

PM - 0.07 lb/ton clinker

D/F - 0.2 ng/dscm TEQ (7% O2)

Mercury - 55 lb/MM tons clinker

THC - 24 ppmvd (7% O2)

HCl - 3 ppmvd (7% O2 - only for major sources)

Monitoring Requirements

Coal Mill Stack

See NSPS Subpart Y

Kiln Stack

PM - PM CPMS, rolling 30 operating day avg

D/F - temperature CMS, rolling 3-hr avg

Activated carbon injection - record rolling 3-hr avg

injection rate & rolling 3-hr avg ACI carrier gas

parameter

Mercury - Hg CEMS or sorbent trap-based

integrated monitoring system, exhaust flow rate

monitor, 30 day rolling avg

THC - THC CEMS

HCl - (1) HCl CEMS & CPMS to monitor wet or

dry scrubber or tray tower parameters, or (2) if

equipped with wet or dry scrubber or tray tower, option to use SO2 CEMS

Clinker production - Weigh scale system

Reference §63.1350

PMk

D/Fk

Hgk

THCk

HClk

const, reconst, mod after April 28, 2008: BLDScm (baghouse)

CPMScm (wet scribber or other) const, reconst, mod before April 28, 2008: Tempcm

2a. Separate Heat Source

Kiln Fuel

(Coal, Coke, etc.) Coal Mill

Kiln Fuel

(Coal, Coke, etc.)

Kiln

Kiln

Exhaust Gas

Stack

Kiln

Stack Exhaust Gas

Cooler/Coal Mill

Exhaust Air

Cooler

Air

Cooler

PMk

D/Fk

Hgk

THCk

HClk

const, reconst, mod after April 28, 2008: BLDScm (baghouse)

CPMScm (wet scrubber or other)

Const, reconst, mod before April 28, 2008: Tempcm

Note: Alkali bypasses are not shown on the diagram, but any configuration

could include an alkali bypass.

2b. Cooler Heat Source

XXk - Monitoring Location for Kiln

XXcm - Monitoring Location for Coal Mill
September 2012

1

Summary of Coal Mill Configurations

I. Scenario 1. Coal Mill Exhaust Routed Through Kiln or Kiln Stack (Total: 45)

 Subtotals by Scenario:

1a. Direct-Fired Kiln, Separate Heat Source (19)

1b. Direct-Fired Kiln, Kiln Exhaust Heat Source (10)

1c. Combined Coal Mill/Kiln Exhaust Gas Heat Source (13)

1d. Combined Coal Mill/Kiln Stack, Cooler Exhaust Gas Heat Source (3)

II. Scenario 2. Separate Coal Mill Stack with Non-Kiln Heat Source (Total: 31)

 Subtotals by Scenario:

2a. Separate Heat Source (1)

2b. Cooler Heat Source (30)

III. Scenario 3. Separate Coal Mill Stack with Kiln Heat Source (Total: 26)

 1 One kiln data point missing is National Cement’s Encino (Lebec) California plant.