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Oasis Well Pumping Test May 2018
Observations and Insights. by Joe C. Yelderman Jr.
Test preparation was a large effort by a “community”
Oasis Well Pumping Test May 2018 Observations and Insights. by - - PowerPoint PPT Presentation
Oasis Well Pumping Test May 2018 Observations and Insights. by - - PowerPoint PPT Presentation
Oasis Well Pumping Test May 2018 Observations and Insights. by Joe C. Yelderman Jr. Test preparation was a large effort by a community The Pumping well Water Quantity Water Levels Flow Rate Water Quality Spot check
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The Pumping well
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Water Quantity
Water Levels Flow Rate
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Water Quality
Spot check Continuous flow data
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An Observation well
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The Community
- CUWCD
District/management
- Oasis LLC
Client
- Water suppliers
Industry
- Baylor University
Education (research)
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Baylor University Students
- Hands-on experience
- Real-world activities
- Professional interaction
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Pumping Well Drawdown
- Temperature effects
- Fairly straight line
- Pumping variations
- Follows the model ?
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Pumping Well Drawdown
- Aquifer Transmissivity
- 1 – 200,000 gpd/ft
- 2 – 125,000 gpd/ft
- < 5,000 ft?
- Acres Well – 75,000 gpd/ft
- > 35,000 ft.
1 2
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Speci cific C Conductance ce
uS/cm
Spc was measured using a YSI Pro 30 meter and A hobo conductivity data logger The YSI is considered the accurate measurement and the data logger is experiencing drift. Temperature measurements did not show drift on the datalogger like the Spc. Therefore, water quality did not appear to change over the pumping period.
500 1000 1500 2000 2500 4/30/2018 5/2/2018 5/4/2018 5/6/2018 5/8/2018 5/10/2018 5/12/2018 5/14/2018 5/16/2018 5/18/2018 5/20/2018 5/22/2018 5/24/2018 5/26/2018 5/28/2018 5/30/2018 6/1/2018 6/3/2018 6/5/2018 6/7/2018 6/9/2018 6/11/2018 6/13/2018 6/15/2018 6/17/2018 6/19/2018 Hobo Datalogger YSI Meter Linear (Hobo Datalogger) Linear (YSI Meter)
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Water Chemistry during the Test
100 200 300 400 500 600 700 800 900 1000
4/30/2018 5/1/2018 5/2/2018 5/3/2018 5/4/2018 5/5/2018 5/6/2018 5/7/2018 5/8/2018 5/9/2018 5/10/2018 5/11/2018 5/12/2018 5/13/2018 5/14/2018 5/15/2018 5/16/2018 5/17/2018 5/18/2018 5/19/2018 5/20/2018 5/21/2018 5/22/2018 5/23/2018 5/24/2018 5/25/2018 5/26/2018 5/27/2018 5/28/2018 5/29/2018 5/30/2018 5/31/2018
TDS Sulfate Nitrate
Date TDS mg/l Sulfate mg/l Nitrate mg/l 4/30/2018 922 222 0.007 5/01/2018 945 220 0.007 5/31/2018 942 231 0.009
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Isotopes
2H and 16O
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Baylor University Report Date: 5/22/2018 Material Received: 5/14/2018 Sample Data pMC F14C d13C o/oo d18O o/oo dD o/oo Beta - 494283 < 0.44 pMC < 0.0044
- 8.0
- 5.3
- 34.59
JHW AMS-Standard delivery MATERIAL/PRETREATMENT: (water DIC) acidify-gas strip COMMENTS: The equivalent "Apparent" radiocarbon age to the reported pMC/fMDN values is ~ > 43500 BP BP (not adjusted for any hydro-geochemical effects on meteoric water 14CO2). Given the complex nature of groundwater DIC14 chemistry, duplicate measurements within 1-2 pMC are reasonable for a single water sample. For very low DIC concentration waters (< 20 mg/L HCO3) DIC14 and waters with complex organic chemistry, results can vary significantly outside of this expectation.
TRINITY OASIS WATER APPARENT AGE
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TRINITY OASIS LLC
INSIGHTS 1. WE KNOW MORE ABOUT THE LOWER TRINITY AQUIFER IN BELL COUNTY THAN EVER BEFORE 2. BOUNDARIES OCCUR BUT THEY APPEAR SEMI-PERMEABLE AND LOCATIONS ARE NOT EXACT 3. THE PUMPING WELL IS IN A MORE PRODUCTIVE AREA THAN MOST OF THE AQUIFER 4. THE WATER CHEMISTRY REMAINED CONSISTENT THROUGHOUT THE TEST 5. THE WATER IS QUITE OLD AND NOT BEING RECHARGED FROM CURRENT RAINFALL 6. COOPERATIVE EFFORTS BY THE GROUNDWATER “COMMUNITY” IN BELL COUNTY MADE THIS A SUCCESS