GROUNDWATER MONITORING PROGRAM: PART I
GROUNDWATER WELL INSTALLATION
Quantitative Measurement of Gasoline Range Petroleum Hydrocabon, Methyl Tert Butyl
Ether, and Benzene, Toluene, Ethylbenzene and Xylene In Soil and Groundwater Samples (EPA Methods 5030B/8015M/8260B/524.2)
[ISBN 0-9741100-7-8]
$23.95 (US)
(67 Pages of Text + 36 Exhibits)
The results of a soil and water investigation conducted pursuant to Title 23 of the California Code of Regulations Section 2722 (a)(2) during a permanent closure proceeding for underground storage tanks, indicated contamination of soil and groundwater (refer to Underground Storage Tank Removal, Part II). Based upon the results of the soil and groundwater investigation which indicated the existence of contamination at the subject site, the local agency with jurisdiction (LAFD) referred the matter pursuant to California Health & Safety Code Section 25297(b), to the State Regional Water Quality Control Board to utilize SRWQCB authority to remedy the effects of, and remove any hazardous substance which had been released into groundwater at the subject site.
Following a thorough case review, the Regional Water Quality Control Board made the determination that, at minimum, groundwater monitoring wells should be installed at the subject site to assess the groundwater condition. In accordance with the RWQCB directive, the Responsible Party commenced the installation of Five (5) groundwater monitoring wells at the subject location.
This Treatise reports and summarizes the results of quantitative gas chromatography/mass spectrometry analysis of soil and groundwater samples obtained from borings advanced during groundwater well installation at the subject site. The extent of contamination of groundwater resulting from the unauthorized release of gasoline is evaluated by analytical results including estimates of soil and groundwater concentrations of Gasoline Range Organics (C4-C10), Methyl Tert Butyl Ether, Tertiary Butyl Alcohol and Benzene, Toluene, Ethylbenzene and Xylene.
CONTENTS
I. Regulatory Background and Conclusions
II. Analytical Methods
A. Method Principles
B. Sample Preparation for Gas Chromatography
C. Sample Preparation for Gas Chromatography/Mass
D. Chain of Custody
E. Methodology: Gas Chromatography and Gas Chromatography / Mass Spectrometry
F. Calibration Standards
G. Quality Control Samples: TPH-G
H. Quality Control Samples: MTBE/BTEX
III. Analytical Results: TPH-G (EPA Method 8015M)
A. TPH: External Calibration-Soil
B. TPH: External Calibration-Groundwater
C. Quality Control: TPH-G
D. Conclusions
IV. Analytical Results: MTBE, TBA, BTEX (EPA Method 8260B/524.2)
A. Soil Samples: Determination of MTBE, TBA, BTEX Concentrations
B. Groundwater Samples: Determination of MTBE, TBA, BTEX Concentrations
C. Quality Control Results
D. Discussion
$23.95 (US)
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