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Home My WebLink About1996 - Permit ApplicationST.. JOHNS RIVER WATER MANAGEMENT DISTRICT September 24, 1996 Certified No.: Z 271 568 402 Richard B. Votapka, P.E. Public Works Director City of Sebastian 1225 Main Street Sebastian, FL 32958 Henry Dean, Executive Dvector John R Wehid Assistant Executive Director Chanes T Myers III, Deputy Assistant Executive Dvector POST OFFICE BOX 1429 PALATKA, FLORIDA 32178-1429 TELEPHONE 904.3294500 SUNCOM 904-860.4500 TDD 9048294450 TOD SUNCOM 860.4450 FAX (EXECUTIVEILEGAL) 3294125 (PERMITTING) 329-4315 (ADMINISTRATIONIFINANCE) 3294508 SERVILE CENTERS 618 E South Sveet 7775 Baydheadaws Way PERMITTING OPERATIONS 00aodo. Fonda 32801 Sole 102 305 East Dove 2133 N Wcpwm Road 4078974300 Jacksonville. Ronda 32256 McCmne. Fonda 32904 Meoame. Fonda 329358109 TDD 407-897-5950 904-7EF6270 450-9844940 450-254-1762 TDD904-7367900 TDD 407-=-5368 TDD 407-2531203 RE: Schumann Drive Tennis Courts Application No. 42-061-0799ANG-ERP Dear Mr. Votapka: The District is in receipt of your Environmental Resource Stormwater Permit application under the status of standard general permit application. Upon preliminary review of the proposed project, the following technical information is required to sufficiently review the possible impacts the project may have on the surrounding area. This information is being requested pursuant to the authority vested in the St. Johns River Water Management District under chapter 373, Florida Statutes, and sections 40C-42.023 and 40C-42.024, Florida Administrative Code. In order to expedite the review of your application, please use the application number referenced above on all correspondence, and submit three (3) copies of all requested information unless otherwise indicated by a specific information request. Please provide the required treatment volume of 1.25 inches over the impervious area plus 0.5 inches over the drainage area for basin #2. [40C -42.026(1)(a), F.A.C.] 2. Please provide the land surface elevation at each boring location and demonstrate how the wet season water table elevation was calculated. It appears from the site plan submitted that the land surface elevations at B-1 and B-2 is 24.6 feet. This would put the wet season water table for B-1 at approximately 23.1 feet and for B-2 at 22.1 feet. [40C -42.026(1)(c), F.A.C.] 3. Please provide stage/area/storage relationships for both retention basins. [40C - 42.026(1)(a), F.A.C.] 4. The bottom contour at retention basin #1 is shown at 23.0 feet, however the bottom elevation listed is 22.5 feet. Please correct this discrepancy. [40C-42.026, F.A.C.] William Segal, CHAIRMAN Dan Roach, VICE CHAIRMAN .lames T. Swann, TREASURER Oils Mason, SECRETARY NVTLAND FERNANDINA BEACH COCOA ST. AUDJSTINE Kathy Chinoy Griffin A Greene James H. Williams Patricia T. Harden Reid Hughes JACKSONVILLE VERO BEACH OCALA, SANFORD DAYTONASEACH 5. The plans list the area at the bottom of retention basin #1 as 7700 square feet, however the area shown on the plans (using the scale of 1 "=30') at the top of bank is 7700 square feet. Please correct the calculations to show the correct areas and storage volume for the basin. (Making a stage/area/storage table will aid in correcting the problem). [40C -42.026(1)(a), F.A.C.] 6. The recovery analysis for basin #2 shows F(y) is equal to zero. When F(y) is equal to zero, F(x) is equal to zero, as shown on Figure 26-7 in the Stormwater Applicant's Handbook. If F(x) is equal to zero, then the recovery time is infinity and the design does not meet the District's recovery requirements. Please redesign the retention basin with the bottom elevation higher than the wet season water table elevation. [40C -42.026(1)(c), F.A.C.] 7. The recovery analysis for basin #1 shows the remaining treatment volume to be recovered under saturated lateral flow is 6717 cubic feet. The variable, h(2), is the height of the treatment volume at the start of saturated lateral flow. The value calculated is incorrect. Please use the stage/area/storage table required above in determining the elevation at which 6717 cubic feet is provided in the retention basin and recalculate the time to recover the remaining treatment volume. [40C - 42.026(1)(c), F.A.C.] If the applicant desires to dispute the necessity for any information requested on an application form or in a letter requesting additional information, pursuant to section 40C- 1.605(5), F.A.C., he or she may request an administrative hearing in accordance with section 120.57, F.S. Any petition for administrative hearing must comply with sections 40C-1.511 and 40C-1.521, F.A.C., must be filed within fourteen (14) days of receipt of the request for additional information, and must be filed with the District Clerk, in Palatka. Please be advised, pursuant to subsection 40C-1.605(5),F.A.C., any application which has not been technically completed within ninety (90) days from the date of receipt of a request for additional information by the District, will be prepared for an Intent to Deny at the next timely Governing Board meeting. If you require more than the allotted ninety (90) days, please indicate this to the staff. In addition, no construction shall begin on the proposed project until a permit is issued by the St. Johns River Water Management District. This is pursuant to subsection 40C-40.042(2), F.A.C., which states, "No construction, operation, maintenance, alteration, abandonment or removal shall be commenced until the permittee receives a written authorization to proceed from the District'; and subsection 40C-42.024(1), F.A.C, which states in relevant part, " No construction, alteration, removal, operation, maintenance, or abandonment of a stormwater management system shall be undertaken without a valid standard general or individual environmental resource stormwater permit as required pursuant to this section." If you have any questions, please do not hesitate to call me at (407)984-4940. Sincerely, l Blanche oucheck, Engineer Department of Resource Management cc: Permit Data Services - ERP John Juilianna *KRalph Brown