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Hydrologic data for the southwest subsurface-injection test site, St. Petersburg, Florida

Open-File Report 78-852

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Abstract

Three injection wells and nine observation wells were constructed at the Southwest St. Petersburg, Fla., site to determine 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, and the other discharging 6,490 gallons per minute. The injection test was run in one well 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 three wells. Before the injection test, chloride concentration in a well 35 feet from the injection well, and in a well 733 feet distant, ranged from 19,000 to 21,000 milligrams per liter. At the end of the test, chloride concentration in one well was 1,800 milligrams per liter and 5,400 milligrams per liter in another. 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. (Woodard-USGS)

Additional Publication Details

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
Edition:
-
Year Published:
1978
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
iv, 53 p. :ill., maps ;27 cm.