Table of Contents

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

Abstract

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.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	American Petroleum Institute
Pages
ISBN