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- Creators: Battelle Memorial Institute. Technology Partnership Practice
This document has been prepared to fulfill the requirements for a hydraulic study for the Cave Creek Landfill operated by Maricopa County.
A majority of the work performed by ADEQ's Nonpoint Source Program is funded by Clean Water Act grants, awarded by the U.S. Environmental Protection Agency which requires States to report annually on progress in meeting the schedule of milestones contained in their nonpoint source management plans, and report reductions in nonpoint source pollutant loadings and improvement in water quality resulting from program implementation.
This pamphlet describes CyberPort as multinational in its approach, considering the impacts of cross-border traffic at the local, state, and regional levels. The goal of CyberPort in Arizona is to increase the capacity of Nogales, San Luis and Douglas to serve as safe, secure and efficient gateways between the United States and Mexico. Nogales, as Arizona’s primary commercial port-of-entry, is naturally positioned to serve as the port of choice for western U.S.-Mexico trade.
The Nogales CyberPort Project began in the Spring of 2002 amid dramatic changes to the safety and security of U.S. borders. Throughout the following year, extraordinary change was experienced in policy and practice regarding the treatment of the border at the local, state and federal levels. While the movement toward a more efficient and effective border crossing environment has been underway in Arizona and the U.S. for a number of years, there is perhaps a no more appropriate time to undertake the effort to define and implement a CyberPort than right now.
The Nogales CyberPort Project began in the Spring of 2002 amid dramatic changes to the safety and security of U.S. borders. Throughout the following year, extraordinary change was experienced in policy and practice regarding the treatment of the border at the local, state and federal levels. While the movement toward a more efficient and effective border crossing environment has been underway in Arizona and the U.S. for a number of years, there is perhaps a no more appropriate time to undertake the effort to define and implement a CyberPort than right now.
This addendum to the 2005 work plan identifies how additional assessment of groundwater features and contamination at Cave Creek Landfill will be conducted.
This study involved the review of 417 ADEQ LUST site files and compilation of relevant data from 323 of these sites into an electronic database. It also involved the collection and analysis of over 700 supplemental groundwater samples, the assessment of aquifer flow properties from 32 wells at 11 sites, and more detailed characterization at six LUST sites representative of a range of conditions at AZ LUST facilities. In addition, over 300 groundwater level measurements were performed and 175 monitoring wells were re-surveyed in order to assess errors in standard practice and their impact on groundwater flow direction determination. An empirical analysis of groundwater impacts at AZ LUST sites was conducted using these data sets, with emphasis on identifying relationships between site conditions (e.g., geology, depth-to-groundwater, etc.) and groundwater impacts. Finally, a combined theoretical-spatial (GIS) analysis was performed to identify LUST scenarios posing the greatest threats to use of groundwater resources.
In March 2004, the U.S. Environmental Protection Agency requested information on efforts to monitor and protect children from exposure to lead in drinking water at schools. The Arizona Department of Health Services reviewed the state lead poisoning registry, and analyzed drinking water samples from 45 randomly selected schools. The Office of Environmental Health provided this consultation to help document our findings and supplement our response to the EPA. This work was also undertaken to help provide useful information should hazardous waste sites be discovered in the future near these schools. We also wanted to apply the ATSDR health assessment process in support of state and federal efforts to protect the health of children.
This Additional Site Characterization Work Plan presents a strategy for collecting site characterization information at the closed Maricopa County Cave Creek Landfill to support ongoing remedial action planning for trichloroethene-impacted groundwater underlying the site. The Work Plan supplements previous remedial investigation work plans prepared to characterize the nature and extent of site contamination.
To evaluate whether VOCs are migrating out of the landfills into the vadose zone, a soil vapor survey of the soil beneath the landfill bases was performed. Permanent vapor monitoring probes were installed and then sampled twice for VOCs. Groundwater beneath the landfills has been impactd by VOCs, namely TCE, DCE, and toluene.