Tetra Tech, Inc
Tetra Tech, Inc
Tetra Tech, Inc
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Northwest Wellfield Wetlands Monitoring<br />
Lakeland, Florida<br />
Project Highlights:<br />
• <strong>Tetra</strong> <strong>Tech</strong> constructed<br />
approximately 20<br />
surficial aquifer monitor<br />
wells and established<br />
continuous water level<br />
recorders of five (5)<br />
upper Floridan Aquifer<br />
wells located off-site<br />
• <strong>Tetra</strong> <strong>Tech</strong> is also<br />
responsible for writing<br />
an aerial photograph<br />
interpretation report<br />
which is also required<br />
as part of the WUP<br />
In 1992, <strong>Tetra</strong> <strong>Tech</strong> obtained a water use permit in the Northwest and Northeast<br />
wellfields for the City of Lakeland. The Northeast wellfield is permitted to pump 9.0<br />
MGD average and 16.0 MGD maximum from the 800-acre wellfield. The 800-acres<br />
contain both wetlands and uplands; permitting law dictates monitored use of water levels<br />
in the surficial and upper Floridan Aquifers. <strong>Tetra</strong> <strong>Tech</strong> constructed approximately 20<br />
surficial aquifer monitor wells and established continuous water level recorders of five<br />
(5) upper Floridan Aquifer wells located off-site.<br />
Permit issuance conditions for the WUP require that an ecological monitoring program<br />
be established for the wellfield property in order to detect any effects that groundwater<br />
withdrawals from the wellfield may have on the onsite wetlands. <strong>Tetra</strong> <strong>Tech</strong> staff has<br />
been responsible for the bi-annual monitoring events since 1993. This consists of<br />
individual monitoring programs for vegetation, soil subsidence, water levels, and general<br />
vegetative trends. Vegetative monitoring includes the use of meter square plots to<br />
analyze the subcanopy and groundcover, as well as observe general trends in the canopy.<br />
<strong>Tetra</strong> <strong>Tech</strong> also performs photographic monitoring at each wetland within the wellfield.<br />
In order to comply with the WUP, <strong>Tetra</strong> <strong>Tech</strong> prepared an annual report that is submitted<br />
to the Southwest Florida Water Management District (SWFWMD). This project includes<br />
investigation of any complaints related to City well pumpage and any environmental<br />
mitigation concerns. <strong>Tetra</strong> <strong>Tech</strong> is also responsible for writing an aerial photograph<br />
interpretation report which is also required as part of the WUP. This information is<br />
presented as part of a hydrologic monitoring data document that is annually submitted to<br />
the SWFWMD.<br />
Project Value:<br />
$38,000 (Project Fee)<br />
Project Duration:<br />
On-going<br />
Project Staff:<br />
William Musser, PE, PH,<br />
PWS, LEED ® AP<br />
Project Engineer<br />
Bruce Lafrenz, PG<br />
Hydrogeologist<br />
Reference:<br />
City of Lakeland<br />
Electric & Water Utilities<br />
501 East Lemon Street<br />
Lakeland, FL 33801-5050<br />
Mr. Gary Ross<br />
Assistant Director<br />
WAtr Utilities<br />
863.834.6193<br />
Page 61
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