Displaying Geochemistry Related Reports

Title: Evaluation of the Edwards Aquifer in Kinney and Uvalde Counties, Texas
Description:
Development of an updated conceptual model in the Edwards Aquifer for the Kinney County and Uvalde Pools and the relationship of the latter to the San Antonio Pool
Details View Download

Title: Soil Gas Survey and Soil Sample Analyses of Former Gensco, Inc Site and Properties Adjacent to Taylor Slough Uvalde, Texas / Edwards Underground Water District Field Investigation July 1988 through October 1988
Description:
Report on field study of volatile organic compound (VOC) contaminants in soil at the former Gensco, Inc site in Uvalde, TX
Details View Download

Title: Hydrogeologic Framework and Geochemistry of the Edwards Aquifer Saline-Water Zone, South-Central Texas
Description:
Geochemical study of the Edwards Aquifer saline zone in relation to location of downdip and geological faults
Details View Download

Title: Using Geophysical Logs in the Edwards Aquifer to Estimate Water Quality Along the Freshwater/Saline-Water Interface (Uvalde to San Antonio, Texas)
Description:
Note: Large-format versions of the plates for this report are available in a companion document. Analysis of geophysical logs and well data to redefine the boundary of the freshwater/saline interface in the Edwards Aquifer Balcones Fault Zone San Antonio Segment.
Details View Download

Title: Geochemical and Isotopic Analyses of Waters Associated with the Edwards Limestone Aquifer, Central Texas
Description:
Inorganic chemical analyses of various Edwards Aquifer samples circa 1976 using new field methods
Details View Download

Title: Analysis of Data from Test-Well Sites along the Downdip Limit of Freshwater in the Edwards Aquifer, San Antonio, Texas, 1985-87
Description:
Geochemical and hydrochemical study of the Edwards Aquifer downdip area and saline-freshwater interface in the San Antonio area
Details View Download

Title: Hydrogeology, Hydrologic Budget and Water Chemistry of the Medina Lake Area, Texas
Description:
Assessment of the geology, hydrogeology and hydrology of Medina and Diversion Lakes and seepage into the Edwards / Trinity aquifers
Details View Download

Title: Using Geophysical Logs in the Edwards Aquifer to Estimate Water Quality Along the Freshwater/Saline-Water Interface (Uvalde to San Antonio, Texas) - Plates
Description:
Full-size plates from Using Geophysical Logs in the Edwards Aquifer to Estimate Water Quality Along the Freshwater/Saline-Water Interface (Uvalde to San Antonio, Texas). See companion document.
Details View Download

Title: Water Quality Trends Analysis of the San Antonio Segment, Balcones Fault Zone Edwards Aquifer, Texas
Description:
Collection and analysis of thousands of groundwater, surface water, and spring water samples to evaluate water quality in the San Antonio segment of the Balcones Fault Zone Edwards Aquifer of south central Texas.
Details View Download

Title: Field and Laboratory Tests of Passive Sampling Techniques
Description:
One of the objectives of the study was to compare the results between the five urban wells and the two rural wells. Only one rural sample contained PCE, and all the other detections were fuel-related compounds, in contrast to the frequent detections of PCE in the urban wells.
Details View Download

Title: Universal Passive Samplers and the Aliasing Problem in Groundwater Sampling
Description:
AY-68-29-418 (Rio Seco) was selected for this study because it is within the Recharge Zone of the Edwards Aquifer surrounded by urban development, and water samples contain consistent PCE concentrations. AY-68-29-418 was sampled eight times to determine the correlation between PCE concentrations from universal passive samplers and water quality grab samples. EAA field staff exchanged the universal passive samplers every 48 hours, one universal passive sampler for one-hour exposure time, and two universal passive samplers for ten days exposure time. During each retrieval of universal passive samplers, EAA field staff also obtained a grab sample.
Details View Download