1 of 21 Introduction to the EPA 7-Step DQO Process DQO Training Course Day 1 Module 7 (30 minutes)...
Transcript of 1 of 21 Introduction to the EPA 7-Step DQO Process DQO Training Course Day 1 Module 7 (30 minutes)...
1 of 21
Introduction to the EPA 7-Step DQO Process
DQO Training CourseDay 1
Module 7
(30 minutes)
Steps 1 - 4
Presenter: Sebastian Tindall
2 of 21
Key Point
The EPA QA/G-4 7-Step DQO Process is EPA’s and DOE’s preferred method for a systematic planning process for environmental decision making
3 of 21
Generic Flow Chart
Information IN Actions Information OUT
From Previous Step To Next Step
Information
OUT to
Next Step
Information IN
From Previous
StepActions
4 of 21
Step Objective:
To clearly define the Problem so that the focus of the Project will be unambiguous
Step 1: State the Problem
Step 4: Specify Boundaries
Step 2: Identify Decisions
Step 3: Identify Inputs
Step 1: State the Problem
Step 5: Define Decision Rules
Step 6: Specify Error Tolerances
Step 7: Optimize Sample Design
5 of 21
ERRORS/FAILURES
THE SINGLE GREATEST REASON WHY REGULATORS DO NOT TRUST DOE/CONTRACTORS:
DON’T BELIEVE SCOPING INFORMATION
6 of 21
Step 1a - State the ProblemInformation IN Actions Information OUT
From Previous Step To Next StepIdentify the DQO Team and define each member’s roles and responsibilities
Continue activities
Identify the decision makers and define each member’s roles and responsibilities
Identify the Stakeholders and determine who will represent their interests
Planning Meeting
Identify available resources and relevant deadlines
7 of 21
Information IN Actions Information OUT
From Previous Step To Next StepScoping Process Results:
• Collect site history, process knowledge
• Summarize existing analytical data
• Specify areas to be investigated
• Summarize all recorded spills and releases
• Document applicable regulations
• Current housekeeping practices
• Current local environmental conditions
Administrative and logistical elements
Step 1b - State the Problem
Scoping Process Results
Scoping Process Issues
8 of 21
Information IN Actions Information OUT
From Previous Step To Next StepConduct interviews with decision makers and Stakeholders to determine their:
•Objectives
•Requirements (applies to decision makers only)
•Concerns
Specify interview issues
Hold Global Issues Meeting to resolve scoping and interview issues
Scoping Process Results
Scoping Process Issues
Continue activities
Step 1c - State the Problem
9 of 21
What are the decision drivers:(risk? regulatory limits? etc.)
What is distribution of COPCs at site?
Information IN Actions Information OUT
From Previous Step To Next Step
How has fate & transport affected site?
What are the COPCs?
Develop Conceptual Site
Model
Concise Statement of the Problem
How did COPCs arrive at site?
Step 1d - State the Problem
10 of 21
Problem Statement Example
In order to [show that lead is contributing to the decrease in duck populations in the wetlands] data regarding [levels of lead in the surface water, sediments, and vegetation in the marshlands] are needed.
11 of 21
Step Objective:
Develop decision statements that require environmental data to address the objective of the problem statement
Step 2: Identify Decisions
Step 4: Specify Boundaries
Step 2: Identify Decisions
Step 3: Identify Inputs
Step 1: State the Problem
Step 5: Define Decision Rules
Step 6: Specify Error Tolerances
Step 7: Optimize Sample Design
12 of 21
Information IN Actions Information OUT
From Previous Step To Next Step
Decision Statements
Concise Statement of the Problem
Identify Principal Study
Questions
Define Alternative
Actions
Step 2- Identify Decisions
13 of 21
Decision Statement Example
EXAMPLE:
Determine whether [the surface soil of the Smith property is radiologically contaminated] and requires [disposal in a radiological landfill] or [requires no action].
14 of 21
Step Objective:
To identify the informational inputs that will be required to resolve the decision statements identified in Step 2, and to determine which inputs require environmental measurements
Step 3: Identify Inputs
Step 4: Specify Boundaries
Step 2: Identify Decisions
Step 3: Identify Inputs
Step 1: State the Problem
Step 5: Define Decision Rules
Step 6: Specify Error Tolerances
Step 7: Optimize Sample Design
15 of 21
Evaluate the Appropriateness of Existing Data: Usability Assessment
Step 3- Identify InputsInformation IN Actions Information OUT
From Previous Step To Next Step
Identify the Information Needed to Establish the Action Level
Determine the Level of Quality Required for the Data
Determine the Source(s) for Each Item of Information Identified
Confirm that Appropriate Analytical Methods Exist to Provide the Necessary Data
List of Environmental
Variables or Characteristics that will be Measured
Decision Statements
Information Needed to Resolve
Decision Statements
Identify Information Required to Resolve the Decision Statements
16 of 21
Lab MethodsE
nvi
ron
men
tal
Var
iab
le
Usa
bil
ity
Ass
essm
ent
His
tori
cal D
ata
DS
#
Ch
emic
al/r
adio
logi
cal o
rP
hys
ical
Att
rib
ute
Un
it o
f M
easu
re
Gen
eral
Sou
rce
of I
nfo
rmat
ion
Doe
s D
ata
Exi
st?
(Y/N
)
Gen
eral
Lev
el o
f qu
alit
y R
equ
ired
(L
ow,
Mod
erat
e, H
igh
)
Is D
ata
qual
ity
Ass
ure
d?
(Y/N
)
Rep
rese
nta
tive
of
the
Pop
ula
tion
? (Y
/N)
Rea
son
able
for
CS
M?
(Y/N
)
Act
ion
Lev
el a
nd
Bas
is f
or A
ctio
n L
evel
Pre
par
atio
n M
etho
d
Ap
pro
pri
ate
Mea
sure
men
t M
eth
od
Mat
rix
Det
ecti
on L
imit
s (P
QL
)
Pre
cisi
on (
RP
D)
Acc
ura
cy
1, 2 Lead mg/kg Laboratory No High Yes No No 250Industrial
PRGs
3050B or 3051 6010B(ICP)
Soil 10 <20% 75% -125%
1, 2 Uranium(total)
mg/kg Laboratory No High Yes No No 240Industrial
PRGs
3050B or 3051 6010B(ICP)
Soil 10 <20% 75% -125%
1, 2 TPH(GRO &
DRO)
mg/kg Laboratory No High Yes No No 100Industrial
PRGs
DRO-3540C(soxhlet)
GRO-5035(purge/trap)
8015B(GC/FID)
Soil 10 <30% 70% -130%
1, 2 PCBs mg/kg Laboratory No High Yes No No 140CFR761.12
(TSCA)
3540C(soxhlet) or
3550B(ultrasonic)
8082(Aroclors
only)
Soil 0.1 <30% 70% -130%
DRO = diesel range organics C10-28 and GRO = gasoline range organics C6-10
17 of 21
Step Objective:
To define the spatial and temporal boundaries that the data must represent to support the decision statement
Step 4: Specify Boundaries
Step 4: Specify Boundaries
Step 2: Identify Decisions
Step 3: Identify Inputs
Step 1: State the Problem
Step 5: Define Decision Rules
Step 6: Specify Error Tolerances
Step 7: Optimize Sample Design
18 of 21
Information IN Actions Information OUT
From Previous Step To Next Step
Define the spatial boundaries of the decision statement
Step 4- Specify Boundaries
Unit of Decision Making
Define the temporal boundary of the problem
Define the scale of decision making
Identify any practical constraints on data collection
Information Needed to Resolve Decision
Statements
Define the population of interest
20 of 21
Information IN Actions Information OUT
From Previous Step To Next Step
Define the spatial boundaries of the decision statement
Step 4- Specify Boundaries
Unit of Decision Making
Define the temporal boundary of the problem
Define the scale of decision making
Identify any practical constraints on data collection
Information Needed to Resolve Decision
Statements
Define the population of interestExample:
Population: Total number of soil samples within the spatial boundary that could potentially be collected and measured for lead contentSpatial Boundary: Top 6 inches of soil within the backyard of the Smith’s propertyTemporal Boundary: 8 years (average length of residence)Unit of Decision: Top 6 inches of soil within the backyard of the Smith’s property over the next 8 years