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- All Subjects: Cave Creek (Ariz.)
- All Subjects: New Mexico
- Creators: Battelle Memorial Institute. Technology Partnership Practice
- Creators: Hasty, Brian W.
This document has been prepared to fulfill the requirements for a hydraulic study for the Cave Creek Landfill operated by Maricopa County.
During the period of 1965 through 1984, Maricopa County operated a landfill leased from the U.S. Bureau of Land Management. In 1982 the County leased a separate parcel from the State for the development of a new landfill. The landfill stopped accepting waste in 1998.
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.
This monitor well completion report was prepared to document the construction and installation of monitor well MW-3, located on the southeast side of Black Mountain Parkway. It was installed to provide long-term ground-water monitoring.
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.
The U.S. Fish and Wildlife Service (Service) is the lead agency responsible for recovery of the Mexican wolf, pursuant to the Endangered Species Act. The Mexican Wolf Recovery Program essentially is separated into two, interrelated components: 1) Recovery – includes aspects of the program administered primarily by the Service that pertain to the overall goal of Mexican wolf recovery and delisting from the list of threatened and endangered species, and 2) Reintroduction – includes aspects of the program implemented by the Service and cooperating States, Tribes, and other Federal agencies that pertain to management of the reintroduced Mexican wolf population in the Blue Range Wolf Recovery Area, which consists of the entire Apache and Gila National Forests in Arizona and New Mexico. This report details all aspects of the Mexican Wolf Recovery Program.
The U.S. Fish and Wildlife Service is the lead agency responsible for recovery of the Mexican wolf, pursuant to the Endangered Species Act. The Mexican Wolf Recovery Program essentially is separated into two, interrelated components: 1) Recovery – includes aspects of the program administered primarily by the Service that pertain to the overall goal of Mexican wolf recovery and delisting from the list of threatened and endangered species, and 2) Reintroduction – includes aspects of the program implemented by the Service and cooperating States, Tribes, and other Federal agencies that pertain to management of the reintroduced Mexican wolf population in the Blue Range Wolf Recovery Area, which consists of the entire Apache and Gila National Forests in Arizona and New Mexico. This report details all aspects of the Mexican Wolf Recovery Program.
In August 2001, a resident of New River contacted the Arizona Department of Health Services, Office of Environmental Health to request information on the health risks of arsenic in drinking water. The resident collected two well water samples and submitted them to a private laboratory for arsenic analysis. The analyses detected arsenic at 560 and 600 μg/L. To confirm these very high arsenic results, ADHS staff sampled the well for arsenic and submitted the samples for analysis by the ADHS State Laboratory. Arsenic was detected at 340 μg/L. After that, a large number of people requested health advice on arsenic in their well water. This public health consultation primarily evaluates arsenic levels found in private wells and documents health advice provided to well owners. When other metals were found at levels of concern, health advice was provided to well owners regarding exposure to those metals too.
Whether reintroduction and recovery should be allowed, and if so where and how, were hotly debated through the 1990s, when reintroduction was formally proposed. They still are. Regardless, the proposal process ended with a nonessential experimental population rule (hereafter Final Rule) approved on January 12, 1998. In keeping with the stated experimental nature of the reintroduction effort, and respectful of the doubts expressed by many, the Final Rule required full evaluations after 3 and 5 years to recommend continuation, modification, or termination of the Reintroduction Project. The 3-Year Review, conducted in 2001, concluded that reintroduction should continue, albeit with important modifications. However, as we discuss elsewhere in this report, for many reasons the 3-Year Review recommendations were not implemented, at least not to the extent that interested parties and stakeholders expected or desired. Regardless of cause, the apparent lack of closure was a significant agency and public concern when the time came for the next review.
By agreement among the primary cooperating agencies, responsibility for the Reintroduction Project’s 5-Year Review fell to the Mexican Wolf Blue Range Adaptive Management Oversight Committee (AMOC) that oversees the Project on behalf of six Lead Agencies and various formal and informal Cooperator agencies. AMOC and the Project's Interagency Field Team conducted the 5-Year Review to comply with the Final Rule, but above and beyond that the intent was to identify and implement improvements in the Project. The Review consists of several primary components: Administrative, Technical, Socioeconomic, and Recommendations. Each is detailed in this report. Review and adaptive management of the Reintroduction Project will not stop with this review. Project cooperators will continue to seek internal and public input regarding Mexican wolf reintroduction to help achieve recovery goals and objectives.
This addendum to the 2005 work plan identifies how additional assessment of groundwater features and contamination at Cave Creek Landfill will be conducted.