| Abstract: | This study was done by the U.S. Geological Survey in cooperation with the U.S. Navy at Area C of the former Naval Air Warfare Center in Warminster Township, Bucks County, Pa., in support of hydrogeological investigations conducted by the Navy to address ground-water contamination in the Stockton Formation. Borehole geophysical logs were collected, heatpulse-flowmeter measurements were made, and borehole television surveys were run in seven boreholes ranging from 31 to 75 feet deep. Caliper logs and borehole television surveys were used to identify fractures and the location of possible water-bearing zones. Heatpulse-flowmeter measurements were used to identify fractures that were water-bearing zones. Natural-gamma and single-point-resistance logs were used to correlate lithology across the area. Elevated concentrations of tetrachloroethylene (PCE) were measured in water samples from wells with water-bearing zones in the interval of the aquifer where monitor well HN-23A is screened. Water samples from wells with water-bearing zones above or below this interval had substantially lower concentrations of PCE. Wells screened in this interval yielded less than 0.5 gallon per minute, indicating that the interval has low permeability; this may account for the small areal extent and slow migration of PCE. |
| Genre: | USGS Numbered Series |
| ProdID: | 85825 |
| Citation Author: | Sloto, Ronald A. |
| Citation Contributing Office: | USGS Pennsylvania Water Science Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | - |
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| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | 0401400 |
| Citation LatS: | 0401000 |
| Citation LonE: | -0750100 |
| Citation LonW: | -0750600 |
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| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | vi, 20 p. |
| Citation Projection: | |
| Citation Public Comments: | Prepared in cooperation with the U.S. Navy |
| Citation Publisher: | Geological Survey (U.S.) |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 2008-1207 |
| Citation Search Results Text: | Interpretation of Borehole Geophysical Logs at Area C, Former Naval Air Warfare Center, Warminster Township, Bucks County, Pennsylvania, 2007; 2008; OFR; 2008-1207; Sloto, Ronald A. |
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| Citation Year: | 2008 |
| Type: | citation/reference |
| Text: | Interpretation of Borehole Geophysical Logs at Area C, Former Naval Air Warfare Center, Warminster Township, Bucks County, Pennsylvania, 2007; 2008; OFR; 2008-1207; Sloto, Ronald A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/of/2008/1207/ |
| Date Other: | Tue, 8 Jul 2008 00:00 -0500 |
| Publisher: | Geological Survey (U.S.) |
