EFFECTS OF SAMPLING AND ANALYTICAL PROCEDURES ON THE MEASUREMENT OF GEOCHEMICAL INDICATORS OF INTRINSIC BIOREMEDIATION: LABORATORY AND FIELD STUDIES
American Petroleum Institute
Section
EXECUTIVE SUMMARY
1. INTRODUCTION
2. BACKGROUND
GEOCHEMICAL CONSIDERATIONS
SAMPLING AND ANALYTICAL CONSIDERATIONS
DATA USE
3. LABORATORY STUDY
MATERIAL AND METHODS
Construction of the Simulated Monitoring Well
Preparation of Synthetic Groundwater Feed
Sampling Methods
Number of Samples Collected and Analyzed
SAMPLE ANALYSES
RESULTS
4. FIELD STUDIES
COLORADO GAS PLANT SITE
MISSOURI UST SITE
METHODS
Sampling Methods
DO Measurements
Analytical Methods
ANALYTICAL DATA
5. DISCUSSION
SAMPLING METHODOLOGY
Laboratory Study
Field Study
DO DETERMINATIONS
Representative Quality of Downhole Measurements
with No Purging
Effects of Purging on DO
ANALYTICAL METHODOLOGY
Iron
Sulfate
Nitrate
Alkalinity
Discussion
6. FINDINGS AND RECOMMENDATIONS
REFERENCES
Figure
2-1 Potential Impacts of Artificial Aeration
2-2 Geochemical Consequences of Hydrocarbon Biodegradation
3-1 Simulated Monitoring Well System
3-2 Schematic of Micropurging Sample Collection Method
4-1 Colorado Gas Plant Site
4-2 Missouri UST Site
5-1 Field Evaluation of Sampling Methods - Dissolved Oxygen
5-2 Field Evaluation of Sampling Methods - Iron
5-3 Field Evaluation of Sampling Methods - Methane
5-4 Dissolved Oxygen Measurements - Up-Gradient Well
5-5 Dissolved Oxygen Measurements - Well in Anaerobic Care
of Plume
5-6 Dissolved Oxygen Measurements - Down-Gradient Well
5-7 Dissolved Oxygen Profile - Colorado Gas Plant Site
5-8 Dissolved Oxygen Profile - Missouri UST Site
5-9 Comparison of Analytical Methods - Iron
5-10 Comparison of Analytical Methods - Sulfate
5-11 Comparison of Analytical Methods - Nitrate
5-12 Comparison of Analytical Methods - Alkalinity
Table
3-1 Composition of Synthetic Groundwater Solution
3-2 Analytical Methods
3-3 QA/QC Samples
3-4 Laboratory Test Results (mg/L)
3-5 Sample Analysis Summary
4-1 Analyses Performed on Samples from the Colorado
Gas Plant Site
4-2 Analyses Performed on Samples from the Missouri
UST Site
4-3 Comparison of Analytical Methods
4-4 Dissolved Oxygen Measurements - Colorado Gas
Plant Site
4-5 Dissolved Oxygen Measurements - Missouri UST Site
4-6 Sample Results
5-1 Triplicate Sample Results for GMW-4
5-2 Qualitative Data Evaluation-Micropurging Method
Versus Bailer Method
5-3 Expressed Assimilative Capacity - Colorado Gas
Plant Site
5-4 Expressed Assimilative Capacity - Missouri UST
Site
5-5 Dissolved Oxygen as a Function of Drawdown
Covers the effects of various sampling and analytical methods of collecting groundwater geochemical data for intrinsic bioremediation studies. Sampling and analytical methods were tested in the laboratory and in the field. There are various groundwater sampling and analytical methods that can be appropriate for measuring geochemical indicators of intrinsic bioremediation. These methods can differ in accuracy, level of effort and cost.
| Document Type | Standard |
| Status | Current |
| Publisher | American Petroleum Institute |
