multimedia sampling (chapter 47) - the sigma group · isco open channel flow measurement handbook...
TRANSCRIPT
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Multimedia Sampling (Chapter 47)
Robert F. Peschel, P.E.
Federal Environment Regulatory Overview
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MULTIMEDIA SAMPLINGIntroductionMultimedia SamplesAnalytical MethodsMultimedia Sampling PlanWastewaterAir/Soil GasGroundwaterSoilWaste Material
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INTRODUCTION
Review the techniques and procedures available for persons who must be concerned with environmental samplingReason for sampling - to collect a representative portion for analysis, the results of which will describe the true characteristics of the source being sampled
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What is a sample?
“To define a sample as representative is to say it is similar in every essential characteristic to the population from which it is being taken. It is important that this similarity be preserved until examination of the sample is complete. That is why sampling protocols are developed for the collection, packaging, labeling, preservation, transportation, storage and documentation of environmental samples.”
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Multimedia sampling is conducted to:
Identify contaminantsIdentify sourcesDetermine extentPrepare Health and Safety PlansEstablish threat to public health and environmentEvaluate treatment, disposal, and/or remedial optionsConfirm clean-upDemonstrate compliance
DATA USE OBJECTIVES (DUOs)
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MULTIMEDIA SAMPLESCategorization: Hazardous – Onsite
High Potential or Moderate Potential
Concerns Proper health and safety Requires sampling
procedures Requires sample shipping
procedure Appropriate analytical
procedures
Environmental - Offsite
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Types of Samples
Grab SamplesComposite Samples Areal Vertical Flow Proportional Time Proportional
Composite
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Sampling StrategiesJudgmental Subjective Sample based on historical information Generally worst case scenario
Random Arbitrary Usually not done on hazardous waste sites
Systematic Establish reproducible scheme such as a grid Could be combination with random
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MULTIMEDIA SAMPLING PLANIntroduction and BackgroundObjectivesSampling Approach and MethodsOrganization and ResponsibilitiesQuality Assurance/Quality ControlDeliverables
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Introduction and BackgroundHistorical search on background of site- land use, aerials, past compliance issuesLearn of potential sources, potential source pathwaysOffsite/onsite reconnaissanceOnsite needs – health and safety plan (HASP)Site Maps
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Establish ObjectivesData Use Objectives (DUO) Specific goals What is data needed
for?Quality Assurance Objectives Reliable Verifiable Defensible
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Data Use Objectives (DUO)
What is the Objective of Sampling –Examples of DUO Determine RCRA characteristic of materials
onsite to classify as hazardous or non-hazardous
Determine concentration of VOCs in residential tap water
Verify attainment of soil clean-up standards
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Quality Assurance ObjectivesSpecify the level of quality the data has to achieveScreening objective – quick preliminary assessmentVerification – verify analytical data, small portion of data used to infer quality of all dataDefinitive objective – used to access accuracy of all data; concentrations and analytes
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Sampling Approach and Methods
Sampling strategySampling proceduresSampling managementSampling containersSampling shipmentSampling documentation
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Organization and Responsibility
Determine who is responsible for which aspect of samplingWho is responsible for: Developing sampling plan Managing the execution of the sampling
plan Completing the health and safety plan
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Quality Assurance/Quality Control
What procedures are to be used in the field to ensure QA/QC Field equipment calibration Preservation protocols Contamination/decontamination of equipment Collection procedures Sample transport/shipment
Lab QA/QC sufficient to conduct data verification
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Deliverables Who needs the
information?
What format? Data summary In-depth report
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Wastewater Sampling
Objectives Regulatory Process control Research
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Wastewater Sampling (cont.)
Sample Types Grab sample - characterize water quality at a
particular time Composite - determine average waste
concentrations time proportional flow proportional
Manual sampling - dippers, jars, bottles or pumps Automatic sampling
longer term representative samples intake, transport, controller, collection system and
storage
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Sample Collection
Proper container - glass or plastic, clear or amberSampling techniques intake position, intake velocity volume collection system pacing
Chain of custody - documented account of change in possession of samples
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Sample Collection (cont.)
Documentation Field notes during sample collection Sample chain-of-custody Analytical results Reports
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Sample Collection (cont.)
Sample preservation to maintain sample integrity until
examination is completed pH adjustment chemical addition cooling to 40oF holding time
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Sample Collection (cont.)
Quality control / quality assurance checks to keep sample collection program
in control duplicate samples split samples spiked samples field blanks
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Calibration and Maintenance
Calibration manufacturer’s instructions documented
Maintenance equipment requires precise repeatable sample
collection volume, velocity and settings
Cleaning of equipment detergent washing, tap water rinse, distilled water
rinse
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Safety
General safety considerations safety harness oxygen deficiency meter combustible gas indicator hydrogen sulfide indicator
Site-specific safety considerations contact with liquids emergency responder
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Wastewater Flow Monitoring
Objectives Regulatory Process control Research
Flow Measurement Techniques Open channel Closed pipe Volumetric Dilution
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Open Channel
Primary flow devices A hydraulic measuring structure of a known
cross sectional area which controls the depth and velocity of the flow.weir flume
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Open Channel (cont.)
Secondary flow devices Instrumentation which senses the water level or
depth of flow in the primary flow device. Measure depth, convert to flow rate, indicate, record and totalize. float bubbler ultrasonic submerged pressure transducer dipping probe staff gauge
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Closed Pipe
Principle of operation velocity meter differential pressure
Metering devices electromagnetic meter turbine meter ultrasonic meter Pitot tube meter orifice plate meter
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Closed Pipe (cont.)
Volumetric Q = V x A (Flow = velocity x area) Manning formula Batch discharges (tanks, sumps, etc.)
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Calibration and Maintenance
Calibration manufacturer=s instructions zero, mid-range, high end and span documented
Maintenance equipment requires precise repeatable
level measurement and conversion depth, flow rate, velocity, and settings
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References:ISCO Open Channel Flow Measurement HandbookEPA - NPDES Storm Water Sampling Guidance Document (EPA 833-B-92-001)EPA - Pretreatment Facility Inspection (A Field Study Training Program) prepared by California State University, SacramentoWDNR Chapter NR 218 Method and Manner of SamplingWDNR Chapter NR 219 Analytical Test Methods and Procedures“Standard Methods for the Examination of Water and Wastewater ???? Edition”EPA - Methods for Chemical Analysis of Water and Wastes (EPA-600/4/79/020).
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AIR SAMPLING GUIDELINES
Objectives Regulatory Process Control Research
Types of Air Samples Ambient air (outdoor) Indoor air Stack Source or equipment emissions Soil atmospheres
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Elements of an Air Sampling Program
Emission stream point where pollutants are generated emission exhaust stream
Frequency periodically continuously
Analysis Reference Methods standardized reference methods (EPA) customized
Testing location laboratory analysis field testing or determination
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Sampling Methods
Canisters - used to collect whole air samples Teflon bags Tedlar bags steel canister
Sorbent - pass measured volume of air through a material which absorbs pollutants of concern carbon silica gel alumina organic polymeric sorbents
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Sampling Methods (cont.)
Stack gas sampling stack sample and velocity traverses referenced sampling train isokinetic sampling compound specific analysis
Direct reading instruments compound specific analysis PID, FID
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Sampling Methods (cont.)
Area sampling Direct measurements emission-flux chamber sampling devicemeasurements taken at several locations
Indirect measurements upwind measurements downwind measurements
Remote-sensing methods
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Ambient Air Monitoring
PSD requirementsChemical specific analyzers for: carbon monoxide nitrogen oxides sulfur dioxide VOC (ozone)
High-volume sampler for particulates
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References:
EPA - 40CFR53 - Ambient Air Monitoring Reference and Equivalent MethodsEPA - 450/4-87-007 “Ambient Monitoring Guidelines for PSD”EPA Handbook Industrial Guide for Air Pollution Control
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GROUNDWATER SAMPLING PROCEDURES
Measuring Water Level Determine groundwater elevation Measuring devices:
popper tape electric tape
Purging Removal of stagnant water Purge by pumping or bailing Remove four (4) well volumes
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Sampling Procedures
Withdrawing Samples Sample shortly after purging Sample in increasing order of contamination Sampling devices:
bailers pumps
Special procedures for VOCs Cover ground with plastic to prevent well
contamination
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Sampling Procedures (cont.)
In-field Measurements Temperature Specific conductance pH Turbidity Odor Color
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Sampling Procedures (cont.)Field Filtering Inorganic compounds Filter size 0.45 micron Specified DNR filtering procedure Not applicable for VOC samples
Sample Preservation To maintain sample integrity until laboratory examination
pH adjustment chemical addition cooling to 40oF holding time
State Lab of Hygiene requirements
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Sampling Procedures (cont.)Sample Handling cooling requirements shipping requirements
Quality Control/Quality Assurance checks to keep sample collection program in control duplicate samples split samples spiked samples field blanks
Chain-of-Custody documented account of change in possession of samples
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Sampling Procedures (cont.)
Documentation DNR form for monitoring wells
person sampling location date equipment used water level measurements site purging data time samples withdrawn field measurements conditions comments
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Sampling Procedures (cont.)
Equipment Maintenance Calibration and maintenance performed on
a regular scheduleRecent Developments Direct - push technology with on-site
laboratory analysis Low-flow purging approach
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References:
DNR - Groundwater Sampling Procedures Field Manual (PUBL-WR-166 87)
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SOIL SAMPLING GUIDELINES
Reasons for Conducting Soil Sampling Agricultural Biological Construction/Engineering Environmental Geological/Hydrogeological Archaeological/Paleontilogical
Soil Sampling Methods General shallow soil/sediment sampling
manual collection using a simple tool such as a shovel, trowel, auger, or soil probe
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Sampling ProceduresPrevent undue soil disturbanceDecontamination of samplersVolume of sample requiredTransfer to appropriate sample containerComposite sampling (not for VOC compounds)Sample handling sample preservation methods sample holding time transportation chain of custody QA/QC methods
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Sampling Procedures (cont.)
Sample documentation sample identification sample collection date and time sample location observations (color, odor, field instrument
readings) name of person(s) collecting samples
Boring logs standard boring log form soil description/classification
Air monitoring (if applicable)
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Environmental Sampling Parameters
Polynuclear Aromatic Hydrocarbons (PAH)Non-Polynuclear Aromatic HydrocarbonsOrganics volatile semi-volatile
Metals (inorganics)Pesticides/HerbicidesPCBsAcid Extractable Compounds
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Environmental Sampling Parameters (cont.)
Base/Neutral Extractable CompoundsCyanidePhenolsHazardous Waste Characteristics Ignitability Corrosivity Reactivity Toxicity (TCLP analysis)
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References:
Wisconsin Department of Natural Resources Chapter NR 716.13EPA SW-846 Test Methods for Evaluating Solid WasteEPA - 540/P-87/001 A Compendium of Superfund Field Operations MethodsUS Soil Conservation Service (SCS) Procedures
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WASTE MATERIAL SAMPLES
Objectives Regulatory generator waste determination TSDF permit
Treatability land ban treatability study
Research Protect Safety/Health
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WASTE MATERIAL SAMPLES (cont.)
Samplers Composite Liquid Waste Sampler (COLIWASA) Solid Waste Samplers
grain samplers soil auger sampling trier soil core sampling device scoop or trowel waste pile sampler
Pond Samplers beaker weighted bottle sampler
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Sample Collection
Information about the waste hazardous properties
Selection of sampler liquids, semi-solids, sludges, solids and
mixturesSample container plastic or glass liners and caps
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Sample Collection (cont.)Sampling plan location number of samples volume protective equipment
Sampling procedures drums fiber-drum, bags, etc. vacuum truck pond waste pile storage tank (ASTM) soil
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Sample Collection (cont.)Sample handling identification labels log books chain of custody shipping/transporting
Sample preservation to maintain sample integrity until examination is completed pH adjustment chemical addition cooling to 40oF holding time
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References:
EPA SW-846 Test Methods for Evaluating Solid WasteSampler and Sampling Procedures for Hazardous Waste Streams EPA-600/2/80-018