upper hassayampa basin aquifer

Douglas Ranch will also enroll in the Central Arizona Groundwater Replenishment District (CAGRD). Soils beneath the waste pits contain VOCs, heavy metals, pesticides, and lime wastes. 0000015272 00000 n Soil vapor VOC concentrations continued to decrease and the HSC performed a SVE system shutdown and rebound test. This basalt flow unit originated from Arlington Mesa to the south. The Site is located in an alluvial-filled basin of the Hassayampa River and has been influenced by the nearby river as well as the Quaternary Arlington Mesa basalt flows. 0000006432 00000 n 0000001321 00000 n ). Superfund National Priority List (NPL) Placement: July 22, 1987. 0000016363 00000 n J8�������u;W�f[�e�k@"��*����*�.^� ���g�1mfpvȊr�H�jmĴ�� �–� �U��@�4�]! Five well sites pump water to six water storage tanks, with a total capacity of 4.3 million gallons of water. Education, Case Studies: The next FYR is expected in early 2021. An unsaturated zone, approximately 10-feet thick, is also currently present beneath the basalt unit. This water supply is obtained from the Upper Hassayampa Basin Aquifer, one of the best water sources in the State of Arizona. Modeling ground-water Flow with MODFLOW and Related Programs, Collection and Analysis of Ground-Water Samples in the Sierra Vista Basin, Arizona, 1998, Research on Acidic Metal Contaminants in Pinal Creek Basin near Globe, Arizona, Precipitation and Streamflow Conditions in Arizona, Winter and Spring, 1996, Controlled Flooding of the Colorado River in Grand Canyon: the Rationale and Data-Collection Planned, Calculated Hydrographs for the Colorado River Downstream from Glen Canyon Dam during the Experimental Release, March 22-April 8, 1996, Accounting for Consumptive Use of Lower Colorado River Water in Arizona, California, Nevada, and Utah, National Water-Quality Assessment Program-Central Arizona Basins, Development of Techniques for the Prediction of Land Subsidence Due to Ground-water Withdrawal, Spatial and Temporal Variability of Point Micro Meteorological Data Used to Estimate Regional Evapotranspiration, Trend Analysis of Water-quality Data at Stream Gages in the Salt and Gila River Basins, Hydrologic investigation of Montezuma Well and Surrounding Area, Signature and Mapping of Nitrates in Ground Water in Arizona, Effects of Water and Sediment Discharges on Channel Morphology, Environmental Dynamics of Persistent Organic Compounds, National Trends Network (Ntn) for Monitoring Atmospheric Deposition (Mad), Mineral-water interaction in Saline Environments, USGS Science in Your Watershed for HUC 15070103, Search USGS for Links, Publications and Web Sites Associated with. The primary source of outflow from the basin is groundwater pumpage (for 0000018528 00000 n ��=V��p�\^�K�o�{. Then it will be distributed to storage reservoirs and to homes, schools and employment centers within Douglas Ranch. The population in the upper Hassayampa River basin doubled from 6,050 in 1980 to 12,348 in 2010 and is projected to exceed 18,000 by 2030 (ADWR 2010), with associated increases in … Douglas Ranch currently has an approved Analysis of Assured Water Supply for 24,000 acre-feet, which will accommodate approximately 46,000 dwelling units and accompanying employment, commercial and municipal services. The annual rate of VOC removal is declining, as is typical of SVE systems. Hassayampa River watershed drains an area of approximately 1,454 square miles in central Arizona. Regional Groundwater-Flow Model of the Redwall-Muav, Coconino, and Alluvial Basin Aquifer Systems of Northern and Central Arizona - 0000008998 00000 n The City of Buckeye is the water provider for Douglas Ranch and will own, operate and maintain the community’s system. Since 2006, the SVE system has removed over 200,000 pounds of volatile organic compounds (VOCs) from subsurface soil. 0000004658 00000 n the SRV groundwater basin, was the impetus for the creation of a second groundwater model covering the remaining service areas of WESTCAPS members. Active Projects The result of this pilot study indicated that changing the treatment system to carbon was feasible and the switch occurred in early 2016. 0000014185 00000 n Performance & security by Cloudflare, Please complete the security check to access. Management That test indicated that it was appropriate to continue operating the SVE system. The Douglas Ranch ownership group has already agreed to donate 200 acres and build a replenishment facility to turn over to the CAGRD. The contaminants of concern in groundwater include various volatile organic compounds (VOCs) such as 1,1-dichloroethene (DCE), trichlorotrifluoroethane (Freon 113), 1,1,1-trichloroethane (TCA); 1,1-dichloroethane (DCA), trichloroethene (TCE), tetrachloroethene (PCE), trichlorofluoromethane (Freon 11); 1,2-dichloroethene (DCE), 1,2-dichloropropane, and toluene. The CGZ generally extends from ground surface to approximately 30 feet below ground surface (bgs). Unit B is a productive aquifer in the region. The extent of the soil and groundwater contaminant plumes vary and may extend beyond the site boundary, but remains part of the Superfund site in its entirety. aquifers associated with the Hassayampa River and its tributaries and from the underlying basin-fill alluvium. In early 2017, the HSC and the U.S. EPA, along with ADEQ, revised and updated the Performance Monitoring and Verification Plan, which included the updated SVPSs.Through 2018, the HSC continued groundwater monitoring, and operations and maintenance of the soil vapor extraction carbon treatment system and the groundwater recovery and treatment system. Two groundwater units, Unit A and Unit B, have been defined at depth. The Upper Hassayampa/Aqua Fria Basin has many gold mines. Also a groundwater extraction and treatment system (GETS) operates at the Site. Unit B is composed of somewhat coarser materials than Unit A and is typically encountered at about 100 feet bgs and has a thickness of over 100 feet. But, you can send us an email and we'll get back to you as quickly as possible. 0000008148 00000 n The District operates 213 water-level gages on streams, channels and dams throughout the Maricopa County region, measuring water depth and transmitting that data in real time. Copyright © 2020 Douglas Ranch | Customized by, The South and the West Show Continued Population Growth – New Research Released, Douglas Ranch Prepares for Groundbreaking on City of the Future, Nevada Makes Progress on the I-11 Corridor, Jerry Colangelo Talks I-11 with Mexico’s Carlos Slim. Douglas Ranch currently has an approved Analysis of Assured Water Supply for 24,000 acre-feet, which will accommodate approximately 46,000 … Information Discovery In 2015, the Hassayampa Steering Committee (HSC) conducted a pilot study to evaluate the efficiency and cost-effectiveness of changing from the  cryogenic treatment system to a carbon treatment for the VOC-contaminated soil vapor. Contaminants of concern at the site may change as new data becomes available. Cloudflare Ray ID: 5f77eca409570883 ��$x�8�g��)%�������ti�n)��S}(R���+�$2�*ud�;��^ؾ��\������(\��"��2>c�ȉe�+�V�����b"^">W5�}F���tW�?�y'�) h�5�����}�R�=�2�F�@�E/G8UH@aU� S;�;'�X����g�m.T�h\���]����DR��D���� d�~��5�Oո�"ڂi����ѵ�����¢.�~����}����ՆִU�j�$�@%���2h�_h�e��0��[(F��`�i=bT�wk�}3��ؖO�$J&_t����?��ļNON��۪.n�?oT�R��q�*�xP�d�)~�h����/�ݧ�k�"�#:H The FGZ extends from approximately 30 to approximately 60 feet bgs and consists predominantly of silts and fine sands. A Conditional Analysis of Assured Water Supply has been approved for an additional 26,000 acre-feet of water. • Wells within three miles of the Site provide drinking water for approximately 350 people and irrigation water for an estimated 2,800 acres of farmland. The effects of both natural and human-related factors on aquifer compaction and water-level changes at 14 sites in southern Arizona.

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