Annual Post-Closure Inspection and Monitoring Report for Corrective Action Unit 329: Area 22 Desert Rock Airstrip Fuel Spill, Nevada Test Site, Nevada, with Errata Sheet, Rev. No.: 1

Wickline, Alfred

Stoller-Navarro Joint Venture

关键词: Hydrocarbons;    02 Petroleum;    Monitoring;    Well Drilling;    Mercury;   

DOI  :  10.2172/897542
RP-ID  :  DOE/NV--1156-REV. 1
RP-ID  :  DE-AC52-03NA99205
RP-ID  :  897542

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report presents the data collected during field activities and quarterly soil-gas sampling activities conducted from May 9, 2005, through May 20, 2006, at Corrective Action Unit (CAU) 329, Area 22 Desert Rock Airstrip (DRA) Fuel Spill; Corrective Action Site (CAS) 22-44-01, Fuel Spill. The CAU is located at the DRA, which is located approximately two miles southwest of Mercury, Nevada. A risk evaluation was added to the scope of the project to determine if the residual concentration of the hazardous constituents of JP4 pose an unacceptable risk to human health or the environment and if a corrective action was required at the site, because the current quarterly monitoring program is not expected to yield a rate constant that could be used effectively to determine a biodegradation rate for total petroleum hydrocarbons (TPH) in less than the initial five years outlined in the CR. Additionally, remediation to the Tier 1 action level for TPH is not practical or technically feasible due to the depth of contamination. Field activities were conducted under the Addendum to the CR to collect sufficient data to determine the rate of biodegradation for TPH contamination at CAU 329 to support closure requirements. Reconstruction of the monitoring system at the site and quarterly soil-gas sampling were conducted to collect the required data. Because existing Wells DRA-0 and DRA-3 were determined to be insufficient to provide adequate data, soil-gas monitoring Wells DRA-10 and DRA-11 were installed. Two soil-gas sampling events were conducted to establish a baseline for the site, and subsequent quarterly sampling was conducted as part of the quarterly soil-gas sampling program. In addition, soil samples were collected during well drilling activities so comparisons might be made between the initial soil contamination levels in 2000 and the concentrations present at the time of the well installation.