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SOUTHWEST FLORIDA WATER MANAGEMENT DISTRICT ENVIRONMENTAL RESOURCE GENERAL CONSTRUCTION MODIFICATION PERMIT NO. 44024630.002 J expiration Date: February '3, 2009 J PERMIT ISSUE DATE: February 13,2004 This permit is issued under the provisions of Chapter 373, Florida Statutes (F.S.), and the Rules contained in Chapters 40D.4 and 40, Florida Administrative Code (F.A.C.). The permit authorizes the Permittee to proceed with the construction of a surface water management system in accordance with the information outlined herein and shown by the application, approved drawings, plans, specificatIons, and other documents, attached hereto and kept on file at the Southwest Florida Water Management District (District). Unless otherwise stated by permit specific, permit issuance constitutes certification of compliance with state Water quality standards under Section 401 of the Clean Water Act, 33 V.S.C. 1341. All construction, operation and maintenance of the surface water management system authorized by this permit shall occur in compliance with Florida Statutes and Administrative Code and the conditions of this perm it. PROJECT NAME: North Town Center. Site Modifications GRANTED TO: KOB Properties, LLC 411 Commercial Court, #E Venice, FL 34292 ABSTRACT: This permit authorizes construction of a new surface water management system serving a 7.46-acre commercial development known as North Town Center. The project is located off US 301 ,one mile north of Zephyrhllls, in Pasco County. Adjacent properties include Wal-Mart Store 706 (Environmental Resource Permit [ERP] No. 44021487.000) to the south and Lowe's of Zephyrhills (ERP application No. 44025468.000) to the north. This project was originally permitted as ERP No. 44024630.000. This modification authorizes a reduction in project and tota/land area due to an acquisition of an as-foot wide strip by the adjacent property owner to the north, as well as several m inar building, site and drainage retention area recontigurations. This permit replaces ERP No. 44024630.000. The project is situated within a hydrologically closed drainage basin. The stormwater management system is designed for a 100-year, 24-hour rainfall of 12.00 inches. The project engineer used the Soil Conservation Service Type II Florida-modified rainfall distributIon and a unit hydrograph shape factor of 484 to compute runoff hydrographs. The proposed surface water management system is comprised of two dry retention ponds to accommodate the proposed commercial development, including two outparcels with an assumed build-out impervious area percentage of 80 percent. The drainage calculations Indicate the ponds are sized to retain the entire runoff resulting from the 1 DO-year post-development rainfall without discharge. However, when the Lowe's of Zephyrhills site (ERP application No. 44025468.000) is constructed, a proposed retaining wall will be constructed north of the North Town Center's western drainage retention pond (Pond 1), This wall will effectively sever Pond 1's connection to the surficial aquifer above the subsurface clay layer, thus impeding the pond's ability to recover. A provision has been made for this change, in that the North Town Center applicant has proposed a control structure with a bleeddown orifice that will slowly discharge water from Pond 1 into the western pond to be constructed on the Lowe's of Zephyrhills site, When the Lowe's suriace water management system is constructed under ERP No. 44025468.000, the pipe discharging from the orifice control structure will be connected to the Lowe's western pond, which has been sized to accommodate this runoff. SIa 39'v'd 8NI S~3~N38 3~I8N08 1a6Lla88Ptt>6 PE:TT Plala6/P6/91a