24-Attachment E - Final DrainRpt.pdf

Bearss Avenue at North Florida Avenue Intersection Improvements Drainage Report 1

Hillsborough County Public Works Department

A-1

APPENDIX A

FEMA FIRMETTE AND

WETLAND MAP

Hillsborough County Public Works Department

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APPENDIX B

IDF CURVE

Drainage Manual IDF Curves

Drainage Manual IDF Curves

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APPENDIX C

STORMTAB AND SPREAD CALCULATIONS

January 1, 2022 Drainage Design Guide Appendix I: Inlet Efficiencies

Appendix I: Inlet Efficiencies I-6

Figure I-11: Type 5, SX = 0.02

Figure I-12: Type 5, SX = 0.03

Appendix I: Inlet Efficiencies I-9

Figure I-17: Sump Conditions for Types 2, 4 & 6; SX = 0.02

Appendix I: Inlet Efficiencies I-12

Figure I-20: Type 9 Inlet

Figure I-21: Type 10 Inlet

Drainage Report 5

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APPENDIX D

SWFWMD CORRESPONDENCE

THIS FORM IS INTENDED TO FACILITATE AND GUIDE THE DIALOGUE DURING A PRE-APPLICATION MEETING BY PROVIDING A PARTIAL "PROMPT LIST" OF DISCUSSION SUBJECTS. IT IS NOT A LIST OF REQUIREMENTS FOR SUBMITTAL BY THE APPLICANT.

SOUTHWEST FLORIDA WATER MANAGEMENT DISTRICT

RESOURCE REGULATION DIVISION

PRE-APPLICATION MEETING NOTES

FILE

NUMBER:

PA 407233

Date:

Time:

Project Name:

10/31/2019 9:00 Florida & Bearss Ave Intersection Improvements

District Engineer: Buddy Wood

District ES: Al Gagne

Attendees: Derek Doughty, Jordan Caviggia (JMT)

County:

Total Land Acreage:

Hillsborough < 10 acres

Sec/Twp/Rge:

Project Acreage:

36/27/18 < 10 acres

Prior On-Site/Off-Site Permit Activity:

11866, 19802, 1783

Project Overview:

Construction of several turn lanes at the intersection, which includes encroachment into an existing stormwater pond and possibly wetland impact.

Environmental Discussion: (Wetlands On-Site, Wetlands on Adjacent Properties, Delineation, T&E species, Easements, Drawdown Issues, Setbacks, Justification, Elimination/Reduction, Permanent/Temporary Impacts, Secondary and Cumulative Impacts, Mitigation Options, SHWL, Upland Habitats, Site Visit, etc.)

Site is located in the Hillsborough River ERP Basin. Mitigation banks that serve this area include the Hillsborough River and North Tampa mitigation banks.

Minor wetland impacts are proposed. The pond that is located on the south side of Bearss Ave and just north of the bank appears to be constructed for the purposes of stormwater treatment. If this can be verified, this pond would not be claimed as a wetland. There will be minor wetland impacts associated with the turn lane on the north side to Bearss Ave and west of Florida Ave.

Provide the limits of jurisdictional wetlands and surface waters. Roadside ditches or other water conveyances, including permitted and constructed water conveyance features, can be claimed as surface waters per Chapter 62-340 F.A.C. if they do not meet the definition of a swale as stated under Rule 403.803

(14) F.S

Provide appropriate mitigation using UMAM for impacts, if applicable. Impacts to the northern wetland area may be considered de-minimis if the impact area is minimal in size. This will need to be determined through a site visit and UMAM analysis.

If the wetland mitigation is appropriate and the applicant is proposing to utilize mitigation bank credit as wetland mitigation, the following applies: Provide letter or credit availability or, if applicable, a letter of reservation from the wetland mitigation bank. The wetland mitigation bank service area and current ledgers can be found out the following link: https://www.swfwmd.state.fl.us/business/epermitting/environmental-resource-permit, Goto “ERP Mitigation Bank Wetland Credit Ledgers”

Demonstrate elimination and reduction of wetland impacts.

Maintain minimum 15 foot, average 25 foot wetland conservation area setback or address secondary impacts.

As of October 1, 2017, the District will no longer send a copy of an application that does not qualify for a

State Programmatic General Permit (SPGP) to the U.S. Army Corps of Engineers. If a project does not qualify for a SPGP, you will need to apply separately to the Corps using the appropriate federal application form for activities under federal jurisdiction. Please see the Corps’ Jacksonville District Regulatory Division Sourcebook for more information about federal permitting. Please call your local Corps office if you have questions about federal permitting. Link: http://www.saj.usace.army.mil/Missions/Regulatory/Source-Book/

Site Information Discussion: (SHW Levels, Floodplain, Tailwater Conditions, Adjacent Off-Site Contributing Sources, Receiving Waterbody, etc.)

Existing roadway/intersection Watersheds- Curiosity Creek (WBID 1523)- does not appear to be impaired for nutrients.

WBIDs need to be independently verified by the consultant

Provide documentation to support tailwater conditions for quality and quantity design

Contamination issues need to be resolved with the FDEP. Check FDEP MapDirect layer for possible contamination points within/adjacent to the project area. FDEP MapDirect Link

- FDEP Site ID Nos. XXXXXX and XXXXXX located within or adjacent to site. Please verify with FDEP if any have current contamination issues. FDEP MapDirect appears to indicate XXXXXX has contamination issues.

For known contamination within the site or within 500’ beyond the proposed stormwater management system:

- after the application is submitted, please contact FDEP staff listed below and provide them with the ERP Application ID # along with a mounding analysis (groundwater elevation versus distance) of the proposed stormwater management system that shows the proposed groundwater mound will not adversely impact the contaminated area. FDEP will review the plans submitted to the District and mounding analysis to determine any adverse impacts. Provide documentation from FDEP that the proposed construction will not result in adverse impacts. This is required prior to the ERP Application being deemed complete.

- If a SWMS is to be constructed within a contamination zone area, a groundwater sample collected from the first aquifer water bearing zone (i.e. zone of saturation or first zone that the water table is encountered) will most likely be required.

For known offsite contamination between 500’ and 1500’ beyond the site:

- FDEP may also require a mounding analysis (groundwater elevation versus distance) for the proposed stormwater systems. SWFWMD will issue the permit when contamination sites are located outside the 500 ft radius prior to concurrence from DEP, however, it is the Permittee’s responsibility to resolve contaminated site assessment concerns with the FDEP prior to beginning any construction activities. A permit condition will be used to reiterate this. You are advised to contact DEP as soon as possible, preferably during permit application period.

FDEP Contacts:

- For projects located within Citrus, Hernando, Pasco, Hillsborough, Pinellas, Manatee, Polk and Hardee Counties: Yanisa Angulo Yanisa.angulo@dep.state.fl.us Any wells on site should be identified and their future use/abandonment must be designated.

Water Quantity Discussions: (Basin Description, Storm Event, Pre/Post Volume, Pre/Post Discharge, etc.)

The proposed impervious areas for the project are associated with construction of turn lanes, which appear to be exempt under Rule 62-330.051(4)(c), F.A.C. Therefore, formal water quantity attenuation is not required for these impervious areas.

A pre-1984 stormwater pond on the south side of the project will likely be impacted. Demonstrate that the volume encroached by the project will be replaced, or demonstrate that the post-development design will meet water quality treatment (for the amount of treatment that is currently being provided by the pond) and water quantity attenuation requirements for its drainage basin.

There is a possible wetland impact on the northern side of Bearss Avenue. Provide equivalent compensating storage for all 100-year, 24-hour riverine floodplain impacts if applicable. Providing cup-for-cup storage in dedicated areas of excavation is the preferred method of compensation if no impacts to flood conveyance are proposed and storage impacts and compensation occur within the same basin. In this case, tabulations should be provided at 0.5-foot increments to demonstrate encroachment and compensation occur at the same levels. Otherwise, storage modeling will be required to demonstrate no increase in flood stages will occur on off-site properties, using the mean annual, 10-year, 25-year, and 100-year storm events for the pre- and post-development conditions.

Demonstrate that site will not impede the conveyance of contributing off-site flows.

Demonstrate that the project will not increase flood stages up- or down-stream of the project area(s).

Water Quality Discussions: (Type of Treatment, Technical Characteristics, Non-presumptive Alternatives, etc.)

The proposed impervious areas for the project are associated with construction of turn lanes, which appear to be exempt under Rule 62-330.051(4)(c), F.A.C. Therefore, formal water quality treatment is not required for these impervious areas.

Also, replace treatment function of existing ditches to be filled.

Sovereign Lands Discussion: (Determining Location, Correct Form of Authorization, Content of Application, Assessment of Fees, Coordination with FDEP)

N/A

Operation and Maintenance/Legal Information: (Ownership or Perpetual Control, O&M Entity, O&M Instructions, Homeowner Association Documents, Coastal Zone requirements, etc.)

The permit must be issued to entity that owns or controls the property.

Provide evidence of ownership or control by deed, easement, contract for purchase, etc. Evidence of ownership or control must include a legal description. A Property Appraiser summary of the legal description is NOT acceptable.

Application Type and Fee Required:

SWERP Individual Major Modification (Permit No. 1783.000)– Sections A, C, and E of the ERP Application.

< 10 acres of project area and < 1 acre of wetland or surface water impacts - $1,092.00 Online Submittal

Consult the fee schedule for different thresholds.

Other: (Future Pre-Application Meetings, Fast Track, Submittal Date, Construction Start Date, Required District Permits – WUP, WOD, Well Construction, etc.)

An application for an individual permit to construct or alter a dam, impoundment, reservoir, or appurtenant work, requires that a notice of receipt of the application must be published in a newspaper within the affected area.

Provide documentation that such noticing has been accomplished. Note that the published notices of receipt for an ERP can be in accordance with the language provided in Rule 40D-1.603(10), F.A.C.

The plans and drainage report submitted electronically must include the appropriate information required under Rules 61G15-23.005 and 61G15-23.004 (Digital), F.A.C. The following text is required by the Florida Board of Professional Engineers (FBPE) to meet this requirement when a digitally created seal is not used and must appear where the signature would normally appear:

ELECTRONIC (Manifest): [NAME] State of Florida, Professional Engineer, License No. [NUMBER] This item has been electronically signed and sealed by [NAME] on the date indicated here using a SHA authentication code. Printed copies of this document are not considered signed and sealed and the SHA authentication code must be verified on any electronic copies

DIGITAL: [NAME] State of Florida, Professional Engineer, License No. [NUMBER]; This item has been digitally signed and sealed by [NAME] on the date indicated here using a Digital Signature; Printed copies of this document are not considered signed and sealed and the signature must be verified on any electronic copies.

Provide soil erosion and sediment control measures for use during construction. Refer to ERP Applicant’s Handbook Vol. 1 Part IV Erosion and Sediment Control.

Disclaimer: The District ERP pre-application meeting process is a service made available to the public to assist interested parties in preparing for submittal of a permit application. Information shared at pre-application meetings is superseded by the actual permit application submittal. District permit decisions are based upon information submitted during the application process and Rules in effect at the time the application is complete.