Walter Smith
& Associates, Inc.

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Walter Smith & Associates, Inc.

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Walter Smith, PE, DEE has been conducting stack sampling training courses since 1969. Since leaving EPA
in 1972, he has conducted and continues to conduct Source Sampling Workshops every year.

He is considered the "Grandfather of Stack Sampling".

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Walter S. Smith, the co-author of EPA Reference Methods 1-8, will lead the instruction of this workshop. The object of this 5-day hands-on seminar is for the student to understand the basics of the principles and practice of source sampling as well as to familiarize the student with the operation of stack sampling & CEMS equipment. It is targeted at those who need basic understanding of stack sampling such as environmental executives, environmental engineers, and those purchasing, observing, planning, or doing stack sampling or responsible for CEMS. The workshop will use EPA methods' 1-5 to teach the basics and then branch out to other topics.
See Course Agenda

This course will assist students in the review of source test and CEMS protocol and reports. The employee will develop the ability to plan, guide, evaluate, and perform source-sampling measurements to determine rates of emission from stationary sources and calibrate and audit CEMS. The course provides detailed review of EPA Methods 1 through 5 and other methods that may be encountered in the analysis of air source emissions. See Agenda The course develops: (a) knowledge of the stack testing equipment employed, (b) understanding of why the prescribed methods are used and (c) ability to perform and evaluate the calibrations and calculations that are a part of the reference methods. Instruction will rely heavily on use of the bias concept in evaluating stack-sampling data. Students will perform calculations on actual data of methods 1 through 5.


Participants will receive comprehensive workshop manuals containing all workshop proceedings, current regulations, methods and selected published papers. The cost of the Source Sampling Workshop is $1,299. Each student will receive a workshop manual (~300 pages) and an up to date methods notebook (~400 pages). It does not include hotel accommodations or meals. For answers to specific questions about the course material, call Walter Smith at 919-772-7843or email at walt@wwaltersmith.com. CEU credit is available for this workshop.


Complete the workshop registration form (link below) to register for the workshop. Payments may be made by use of check, VISA, MasterCard or American Express. All registrants must be paid in full before being admitted into the workshop. Classes fill quickly, so we urge you to pre-register early.

Workshop Registration Form:   PDF Format PDF Format        Word Format Word Format

Stack Sampling & CEM Course Agenda


8:30 Registration
9:00 Welcome and Overview
9:30 Introduction
10:30 EPA Method 1 (location)
11:15 EPA Method 2 (flow rate)
12:00 Lunch (on your own)
1:00 EPA Method 3 (molecular weight)
2:00 EPA Method 4 (moisture)
2:30 EPA Method 5 (particulate)
4:30 Adjourn


9:00 Isokinetic Sampling & Biases
9:45 EPA Method 5 (particulates)
12:00 Lunch (on your own)
1:00 Discussion of Laboratory Exercise
2:00 Laboratory Exercise I

  • Sampling Location
  • Velocity Pressure Measurement
  • Orsat Analyzer
  • Moisture Determination
    • Stack Temperature
    • Stack Pressure
    • Pitot Tube Calibration
    • Pitot Tube Orientation
    • Orifice Meter Calibration
    • Type "S" Pitot Tube Inspection
    • Probe Nozzle Calibration
    • Cyclonic Flow Check

5:00 Adjourn


9:00 Review Laboratory Exercise I
10:00 Source Sampling Calculations
11:00 Operating Equation Calculations
12:00 Lunch (on your own)
1:00 Discussion of Laboratory Exercise II
2:30 Particulates (Laboratory Exercise II)
5:00 Adjourn


9:00 Discussion of Laboratory Results
9:15 Other Source Testing Problems

  • Access Problems
  • Unconfined Sources
  • High Temperature
  • High Moisture
  • Low Flow
  • Cyclonic
  • Method 8 and Controlled Condensation
  • 5B vs 5F Flow

10:00 Particle Sizing & PM10 & 2.5
10:30 Gas Sampling

  • SOx (Method 6 & 8)
  • NOx (Method 7)
  • VOC (Methods 18, 25 & 25A)
  • TRS (Methods 16 & 16A) Methods

12:00 Lunch (on your own)
1:00 Speciating VOC's (Methods 18 & 16)
2:30 Instrumental Methods (Method 3A, 6C, 7E, 10, 21 & 25A)
5:00 Adjourn


9:00 F Factor (Method 19)
9:30 CEMS - Part 60
11:00 CEMS - Part 75
12:00 Adjourn

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Walter Smith & Associates, Inc.

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Walter Smith & Associates, Inc.
6225 Splitrock Trail Apex, NC 27539
Phone: (919) 772-7843     Fax: (919) 325-7381     Cell: (919) 616-6416
walt@waltersmith.com                 Web Address: www.waltersmith.com

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