Download or read book Results of Soil Vapor Sampling at SA 6 McClellan Air Force Base California written by and published by . This book was released on 1998 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This letter presents the results of the soil vapor sampling performed by Parsons Engineering Science, Inc. (Parsons ES) on 11 March 1998 and 22 May 1998 at Study Area 6 (SA 6), McClellan Air Force Base (AFB), California. Soil vapor samples were collected by Parsons ES to assess the effectiveness of more than 4 years of bioventing in remediating the volatile organic compound (VOC) and total petroleum hydrocarbon (TPH) contamination in site soil. The soil vapor sampling event was performed in accordance with the Final Sampling and Analysis Plan to Support Recommendation for No Further Investigation at SA 6 (Parsons ES, 1998) which has been reviewed and approved by the Air Force Center for Environmental Excellence (AFCEE), McClellan AFB, and the California Regional Water Quality Control Board, Central Valley Division. The SAP provides a detailed site description and history for SA 6 as well as soil and soil vapor sampling procedures and criteria to be used to support a no further investigation (NFI) recommendation. The purpose of this letter is to summarize the soil vapor sampling results and provide recommendations for confirmation soil sampling based on these results. A site layout illustrating soil vapor sampling locations and proposed soil sampling locations (Figure 1) and a table summarizing soil vapor results (Table 1) are attached.

Download or read book Recommendation for No Further Investigation at Study Area 6 SA 6 McClellan Air Force Base California written by and published by . This book was released on 1999 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is to document the effectiveness of soil remediation at SA 6 and to provide data to support an NFI decision for the site. SA 6 is located in the southwestern portion of the base within Operable Unit B (OU B) (Figure 1.1), south of Building 656, and west of Building 655 (Figure 1.2). The site is the former location of a gasoline service station (Building 657) and its associated underground storage tanks (USTs) which were located immediately east of the former building. The site is currently near the center of a large, paved parking lot. The former service station operated from 1955 until 1990. The two gasoline USTs and twO diesel USTs which supplied the station were removed in 1990 and 1991. Initial investigations conducted by the Base determined that the USTs had leaked and contaminated the soil. Subsequent investigations conducted at SA 6 identified fuel hydrocarbons, volatile organic compounds (VOCs) including benzene, toluene, ethylbenzene, and xylenes (BTEX), and halogenated VOCs in soil, soil vapor, and groundwater (ES, 1994; Radian, 1995). Although halogenated VOCs (chlorinated compounds) have been detected at SA 6, the Remedial Investigation Characterization Summary (RICS) (Radian, 1995) concluded that the source of these compounds is Investigation Cluster 7 (IC 7), another OU B site northwest of SA 6. Because only petroleum hydrocarbon contamination is attributed to the former gasoline service station, the RICS concluded that only total petroleum hydrocarbons (TPH) and BTEX were contaminants of potential concern (COPCs) at SA 6.

Download or read book Soil Vapor Extraction Project at McClellan Air Force Base California written by Patrick G. Reust and published by . This book was released on 1994 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sampling and Analysis Plan Soil Vapor Extraction Treatability Investigation Site S Within Operable Unit D McClellan Air Force Base written by and published by . This book was released on 1991 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This sampling and analysis plan (SAP) describes procedures developed for the treatability investigation of soil vapor extraction (SVE) at Site S at the McClellan Air Force Base near Sacramento, California. The purpose of the treatability investigation is to develop sufficient field and operational data to assess the applicability of SVE technology in removing site-specific contaminants at the base. Site S is one of 12 waste disposal sites identified as a former fuel and solvent disposal pit. Primary objectives of the sampling and analysis efforts are to: (1) Assess the nature and extent of vadose zone soil contamination; (2) Evaluate the in situ permeability of vadose zone soils; (3) Obtain site-specific field data for design of the pilot-scale SVE system; and (4) Evaluate the effectiveness and implementability of SVE for site remediation and recovery.

Download or read book Sampling and Analysis Plan written by McClellan Air Force Base and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Data Summary Report for Area D Soil Gas Sampling and Analysis McClellan Air Force Base Volume 1 Data Summary written by and published by . This book was released on 1992 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: CH2M HILL performed this work under a contract with McClellan Air Force Base for various environmental consulting services. The task order for which this report was prepared required sampling and analysis of soil gas extracted from vent risers through a low permeability cover over hazardous waste sites in Area D and from soil gas migration wells around the perimeter of the cover. The objectives of sampling and analyses were to provide data for comparison of the various sampling media used, determine the concentrations of target analytes in subsurface gases, evaluate the change in subsurface gas concentrations over time during vapor extraction, evaluate recovery of gas concentrations during non-extraction periods, evaluate sampling and analytical methods for future use in determining the nature and extent of contamination at the site, and recommended routine sampling and analytical protocols for soil gas monitoring at McClellan. This report is organized into a data interpretation volume (Volume I), and a second volume (Volume II) containing data both condensed and as received, and quality control reports.

Download or read book Data Summary Report for Area D Soil Gas Sampling and Analysis McClellan Air Force Base Volume 2 Data written by and published by . This book was released on 1992 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Close Support Laboratory for the analysis of landfill gas samples by EPA Method TO 14 using full scan GC/MS was established at the McClellan Air Force Base for use by CH2M Hill. The laboratory was designed to analyze approximately 180 landfill samples collected over a one month period. The samples were collected in 800 m1 SUMMA canisters provided by the Oregon Graduate Institute (OGI). Section 1 describes the quality assurance program and the analytical methods for the CSL laboratory, and Section 2 contains all of the analytical report sheets by day analyzed. The Laboratory used a HP 5809 GC with a HP 5971 MSD leased for the project from US Analytical Instruments. The GC/MS system was connected to the HP Vectra MS/DOS Chemstation, and the reports were generated by the computer and automatically printed in the form of Excell Spreadsheets. The daily QA/QC reports were generated on a second IBC Compatible computer using LOTUS 123 software.

Download or read book Installation Restoration Program IRP Stage 3 Groundwater Sampling and Analysis Program for McClellan Air Force Base California October Through December 1993 Data Summary written by and published by . This book was released on 1994 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Data Summary presents the results of groundwater sampling activities conducted on and in the vicinity of McClellan Air Force Base during the sampling period of October through December 1993. Concentrations of purgeable hydrocarbons and aromatic compounds detected in wells (44 monitoring wells, 6 extraction wells, and 1 extraction well composite) exceeded state and/ or federal drinking water standards. These wells are located in Sectors A, B, C, and D.

Download or read book Installation Restoration Program IRP Stage 3 Groundwater Sampling and Analysis Program for McClellan Air Force Base California January Through March 1993 Data Summary written by and published by . This book was released on 1993 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Data Summary presents the results of groundwater sampling activities conducted on and in the vicinity of McClellan Air Force Base during the sampling period of January through March 1993. Concentrations of purgeable hydrocarbons and aromatic compounds detected in wells (42 monitoring wells, 6 extraction wells, 1 extraction well composite, and 1 background well) exceeded state and/or federal drinking water standards. Like the Fourth Quarter 1992, 25 monitoring wells exceeded the maximum concentration levels (MCLs) for one or more inorganic analysts in the First Quarter 1993, compared to 10 wells in the Third Quarter 1992. The reason for the increase is due to the change in sampling procedure (nonfiltering of inorganics). These wells are located in Sectors A, B, C. and D.

Download or read book Installation Restoration Program IRP Stage 3 Groundwater Sampling and Analysis Program for McClellan Air Force Base California April Through June 1993 Data Summary written by and published by . This book was released on 1993 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Data Summary presents the results of groundwater sampling activities conducted on and in the vicinity of McClellan Air Force Base during the sampling period of April through June 1993. Concentrations of purgeable hydrocarbons and aromatic compounds detected in wells (48 monitoring wells, 5 extraction wells, and 1 extraction well composite) exceeded state and/or federal drinking water standards. Twenty-nine (29) monitoring wells exceeded the maximum concentration levels (MCLs) for one or more inorganic analytes. Nineteen of the 29 wells exceeding MCLs have not been sampled since the implementation of the nonfiltering procedure. These wells are located in Sectors A, B, C, and D.

Download or read book Installation Restoration Program IRP Stage 3 Groundwater Sampling and Analysis Program for McClellan Air Force Base California April June 1994 Data Summary written by and published by . This book was released on 1994 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This data summary presents the results of groundwater sampling activities conducted on and in the vicinity of McClellan Air Force Base during the sampling period of April through June 1994. Concentrations of one or more contaminants equaled or exceeded state and/or federal drinking water standards in 111 wells (100 monitoring wells, 10 extraction wells, and one extraction well composite). These wells are located in Sectors A, B, C, and D.

Download or read book Installation Restoration Program Stage 3 McClellan AFB California Remedial Investigation Feasibility Study Groundwater Sampling and Analysis Program January Through March 1989 Data Summary written by and published by . This book was released on 1989 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Data Summary presents the results of groundwater sampling activities conducted on and in the vicinity of McClellan Air Force Base from the sampling period of January through March, 1989. Concentrations of purgeable halocarbons and aromatic compounds detected in 336 wells (26 monitoring wells are located on base in Area A, B, C, D, and adjacent on-base areas and off-base in the Northwest and Southwest areas. There was no detected increase in the areal extent of contaminated groundwater, nor was there any increase in the depth that contaminated groundwater was detected. The Area D extraction system is effectively operating to change hydraulic gradients, so groundwater in Area D flows toward the extraction wells. Contaminant concentrations have decreased in Area D deep zone monitoring wells. Samples from three middle zone monitoring wells located in Area D also show decreases in contaminant concentration during this sampling period. Decreasing contaminant concentrations have stabilized in shallow zone monitoring wells located off-base, west of Area D.

Download or read book Soil Vapor Extraction Treatability Investigation Site S Within Operable Unit D McClellan Air Force Base Phases 2 and 3 written by and published by . This book was released on 1992 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sampling and Analysis Plan to Support Recommendation for No Further Investigation at Tank Farm 4 PRL T 18 McClellan Air Force Base California written by and published by . This book was released on 1995 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: This sampling and analysis Plan (SAP) presents the proposed scope of work to be conducted at the former Tank Farm #4 site at McClellan Air Force Base (AFB), Sacramento County, California. It is anticipated that the analytical results from the proposed sampling will support a no further investigation (NFI) recommendation for this site. This SAP has been prepared by Parsons Engineering Science, Inc. (Parsons ES) for submittal to the Regional Water Quality Control Board (RWQCB) and the Department of Toxic Substances Control (DTSC). This SAP follows the recommendations for the site in the OU A Phase I Remedial Investigation (RI)and Site Characterization Summary (S CS) report (Jacobs 1995).

Download or read book Installation Restoration Program Stage 3 McClellan Air Force Base California Remedial Investigation Feasibility Study Groundwater Sampling and Analysis Program Data Summary written by RADIAN CORP SACRAMENTO CA. and published by . This book was released on 1988 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concentrations of purgeable halocarbon and aromatic compounds detected in samples collected from 40 monitoring wells and Six Area D extraction wells exceeded state and federal drinking water standards. These 32 monitoring wells are located on base in Areas A, B, C, D, and Adjacent On-Base Areas, and off-base in the Northwest and Southwest Areas. There was no definable increase from the previous sampling period (1 April through 30 June, 1988). The Area D extraction system is effectively operating to change hydraulic gradients based on differences in hydraulic heads specified for the system. Contaminant concentrations continue to decrease in deep zone monitoring wells. Samples from several middle zone monitoring wells show and decreasing trend except for this sampling period when concentrations increased. Decreasing contaminant concentrations have recently stabilized in shallow zone monitoring wells located outside the extraction system well-field. (FR).

Download or read book Field Investigation and Soil Sampling Results Former Building 147 Building 302 and Building 127 at Air Force Plant 42 Palmdale California written by and published by . This book was released on 1994 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioventing pilot tests were planned at Air Force Plant 42 (AFP 42) in Palmdale, Los Angeles County, California at two sites (Former Building 147 and Building 302) with a third site (Building 127) serving as an alternate. Drilling and soil sampling activities were performed at AFP 42 as the first stage of the bioventing pilot tests. However, significant hydrocarbon contamination was not detected at any of the three sites and no pilot tests were performed. No vent wells (VWs), vapor monitoring points (VMPs), or blower units were installed. The purpose of this letter report is to describe the results of drilling and soil sampling activities. Site histories, previously known contamination distributions and concentrations, and geologic/hydrogeologic profiles are documented in the Draft Bioventing Pilot Test Work Plan. Background information on the development and recent success of the bioventing technology is found in the document entitled "Test Plan and Technical Protocol for a Field Treatability Test for Bioventing" referenced in the Draft Bioventing Pilot Test Work Plan.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1991 with total page 1336 pages. Available in PDF, EPUB and Kindle. Book excerpt: