Hydrologic data for the southwest subsurface-injection test site, St. Petersburg, Florida
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Abstract
Three injection wells, A1, A2, and A3, and nine observation wells, B1 through B9, were constructed at the Southwest St. Petersburg site to determine the feasibility of injecting wastewater treatment plant effluent into permeable zones containing saline water. Two withdrawal tests and one injection test were performed. Both withdrawal tests ran for about 3 days, one discharging 650 gallons per minute from well B8; the other discharging 6,490 gallons per minute from test well A3. The injection test was run in A3 for 91.1 days at an average rate of 2,830 gallons per minute. Injection well pressure reached a maximum of 48.1 pounds per square inch near the end of the test. Rhodamine WT was used as a tracer during the injection test and was identified in wells B3, B6, and B7.
Before the injection test, chloride concentration in well B6, 35 feet distant from the injection well, and in well B3, 733 feet distant, ranged from 19,000 to 21,000 milligrams per liter. At the end of the test, chloride concentration in B6 was 1,800 milligrams per liter and in B3 was 5,400 milligrams per liter. Eleven wells near the site were sampled before the test for water-quality analyses and chlorides ranged from 18 to 1,400 milligrams per liter.
Suggested Citation
Hickey, J.J., Spechler, R., 1978, Hydrologic data for the southwest subsurface-injection test site, St. Petersburg, Florida: U.S. Geological Survey Open-File Report 78-852, iv, 53 p. :ill., maps ;27 cm.
ISSN: 2331-1258 (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Hydrologic data for the southwest subsurface-injection test site, St. Petersburg, Florida |
| Series title | Open-File Report |
| Series number | 78-852 |
| DOI | 10.3133/ofr78852 |
| Year Published | 1979 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | iv, 104 p. |
| Country | United States |
| State | Florida |
| City | St. Petersburg |