SUBJECT
title
Completion of Southeast Wellfield Test Production Well #3 (Information)
body
DESCRIPTION
PRWC contractors recently completed drilling the third Southeast Wellfield Test Production Well (SE-TPW3). Located at the approximate half-way point along the wellfield, the goal of SE-TPW3 was to validate the results of the first two test wells (SE-TPW and SE-DEW) which were completed at the northernmost and southernmost ends of the wellfield alignment, respectively. As requested by SWFWMD, TPW3 was completed prior to the completion of the 90% plant design so that changes to the treatment process design could be incorporated, if needed.
Results of the water quality and pump capacity testing conducted reveal consistency in results with the other test sites. The table below summarizes pertinent data from each test site. The transmissivity at the SE-TPW3 site is similar to that measured at the SE-DEW site and significantly higher than that measured at the SE-TPW site. Water quality at the SE-TPW3 site is similar to that encountered at the SE-TPW site and more mineralized than the SE-DEW site.
Overall, the yield and water quality characteristics encountered at the SE-TPW3 site are within the range expected. The test production well-constructed at the site will be used as a permanent supply well for the reverse osmosis plant that is planned for construction.
Well
Transmissivity (ft2/d)
Storativity (unitless)
Leakance (day-1)
Specific capacity (gpm/ft)
Total Dissolved Solids (mg/l)
Specific conductance ( ?S/cm)
SE-DEW
16,300
3.6 x 10-4
4.07 x 10-3
37.6
1,100
1,447
SE-TPW
3,830
1.5 x 10-3
1.1 X 10-2
13.8
3,220
3,030
SE-TPW3
20,900
1.6 x 10-3
2.1 x 10-4
31.6
2,640 - 2,837
2,991
RECOMMENDATION
This item is an information item, and no Board action is required.
FISCAL IMPACT
The design, construction, testing, and oversight budget for the Southeast TPW3 well was $4,124,500 which is paid through the SWFWMD Grant 21CF0003731 and the SRF Design Loan DW532001
CO...
Click here for full text