18-E5. Drainage Design Report.pdf

COLLIER PARKWAY AT LIVINGSTON ROAD

INTERSECTION IMPROVEMENTS

WORK ORDER NO.: EDO 020-038

DRAINAGE DESIGN REPORT

Prepared For: Pasco County Development Services

Prepared By: Ayres Associates

8875 Hidden River Parkway, Suite 200 Tampa, FL 33637

Engineer Of Record: ___________________ Thomas J. Ward, P.E.

PE License Number: 52144

July 2024 Revised: August 2024

Digitally signed by Ward, Thomas DN: CN="Ward, Thomas" Date: 2024.08.22 17:05:35-04'00' i

Collier Parkway at Livingston Road Drainage Design Report

Table of Contents Table of Contents i Design Conditions and Scope 1 Permitting 1 Floodplain 1 Existing Drainage Patterns 2

Project Basin (M1620) 4 Project Basin (M1600) 4 Project Basin (M4420) 4 Project Basin (M4440EN) 4 Project Basin (M4460N) 4 Project Basin (M4480) 4 Project Basin (M4440W) 4

Project Basin (M4440E) 4 Project Basin (M4440) 4 Project Basin (M4440N) 5 Project Basin (M4480D) 5

Project Basin (MSCLR) 5 Design Criteria 5 Proposed Design 5 Seasonal High Ground Water 8

Project Basin (M1620) 8 Project Basin (M1600) 8 Project Basin (M4420) 8 Project Basin (M4440EN) 8 Project Basin (M4460N) 8 Project Basin (M4480) 8 Project Basin (M4440W) 8

Project Basin (M4440E) 9 Project Basin (M4440) 9 Project Basin (M4440N) 9 Project Basin (M4480D) 9

Project Basin (MSCLR) 9 Results 9 Cypress Creek ICPR Modeling Results Table 9

Figures Figure 1 Existing Conditions Drainage Basin Map 2 Figure 2 Existing Basin Map Node Reach Diagram 3 Figure 3 Proposed Conditions Drainage Basin Map 6 Figure 4 Proposed Basin Map Node Reach Diagram 7

APPENDICES

Appendix A SWFWMD Pre Application Meeting Minutes Environmental Narrative SWERP Application Section A i

SWERP Application Section C SWERP Application Section E Appendix B

Existing Conditions Drainage Basin Calculations Existing Conditions Stage/Area Calculations

Appendix C Existing Conditions ICPR Model Results and Input Appendix D Proposed Conditions Drainage Basin Calculations Proposed Conditions Stage Area Calculations Appendix E Proposed Conditions ICPR Model Results and Input Appendix F Geotechnical Report

Intersection Improvements Drainage Design Report

Design Conditions and Scope The project area includes Livingston Road that extends northerly from the intersection of Collier Parkway/County Line Road to just south of SR 54. The project includes a proposed southbound left-turn lane onto eastbound County Line Road and a proposed southbound right-turn lane onto westbound Collier Parkway. The project also includes proposed sidewalk along the west side of Livingston from Collier Parkway to just south of SR 54. Proposed 4-foot pavement on the proposed 8-foot shoulder will also be constructed along both sides of Livingston from Collier/County Line to just south of SR 54. West of Livingston along the north side of Collier a proposed 5-foot sidewalk will extend westerly approximately 1500 feet from Livingston and connect to the existing sidewalk. A proposed sidewalk will also be constructed easterly for approximately 1800 feet along the north side of County Line Road and connect to the existing sidewalk on the west side of Lake Haven Drive.

The project is located in the Southwest Florida Water Management District (SWFWMD). Runoff drains to interconnected wetlands and modeled in the SWFWMD Cypress Creek ICPR Surface Water model. The wetland system extends to a floodplain/wetland area adjacent to the west side of Livingston and north of Collier Parkway before discharging easterly to Turtle Lake located just east of Livingston Road and north of County Line Road. The existing ICPR model was modified for the proposed condition and accounts for addition impervious area, floodplain stage/area volumes by excavating adjacent to impact areas to preserve surface water stages. This Drainage Design Report demonstrates that the proposed project will not increase surface water stages upstream or downstream of the project area.

Permitting A Pre-Application Meeting was held with the Southwest Florida Water Management District (SWFWMD) on July 20th, 2023, to determine requirements to obtain an Environmental Resource Permit (ERP) from the SWFWMD. The SWFWMD has determined that this project requires a SWERP that includes Sections A, C, and E of the ERP Application (see Appendix A for SWFWMD Pre-Application Meeting Minutes, Environmental Narrative, and SWERP Sections A, C, & E). Water quality treatment is not required. Receiving waters are not impaired by nutrients.

The Cypress Creek ICPR Model has been used to demonstrate that proposed surface water stages will not be increased on offsite property upstream and downstream of the project area for the 2.33y/24hr, 10yr/24hr, 25y/24hr, and 100y/24hr storm events.

Floodplains The latest 100-year Flood Stages have been identified by the existing SWFWMD ICPR Model (See Figure 2 Existing Basin Map Node Reach Diagram). There are floodplain and surface water impacts in the northwest corner of Collier Parkway and Livingston. The roadway cross sections provide cut volumes equal to 1185 cy within the floodplain, which is greater than the impacted floodplain volumes of 967 cy. Therefore, the proposed project will not create adverse impacts to existing floodplain storage volumes. There are no other floodplain and surface water impacts along the remainder of the project. Figure 4 Proposed Basin Map Node Reach Diagram demonstrates that 100-year surface water stages upstream or downstream of the project area will not be increased by proposed conditions. Therefore, the proposed project will not create adverse impacts to floodplains or surface waters.

Existing Drainage Pattern Existing drainage discharges to wetland systems that conveyed flow from north to the south to Turtle Lake with ultimate outfall to southern wetland systems south of County Line Road east of Livingston in Hillsborough County. Existing drainage patterns in northern portions of the project area flow easterly and westerly of the alignment to adjacent wetlands (see the below existing Figure 1 Existing Drainage Map). The eastern wetlands in the northern portion flow westerly through existing cross drains to western wetlands.

The wetland system flows southerly along the west side of Livingston to the northeast corner of Collier Parkway/Livingston before flowing easterly via an existing cross drain that ultimately discharges to Turtle Lake (see Figure 2 for existing drainage basins, wetlands, and floodplain stages). North of Basin M4440, a portion of grass impervious area will be replaced with impervious area consisting of proposed paved shoulder along both sides of the alignment and concrete sidewalk area on the west side (no change to ICPR model). Existing drainage basin calculations are provided to identify the total (project) area along with the additional area of widening that changes the existing (pervious) area of the existing conditions to proposed (impervious) area in the condition for each basin, which are applied to the proposed ICPR model. Basins north of M4440 include: M1620 on the west side of Livingston Road and M4420 on the west side. The existing ICPR model includes peak stages for the 100-year floodplain area in all wetland basins including the floodplain impact areas in the northwest corner of the intersection at Collier and Livingston (see Appendix B for Existing Drainage Basin Calculations and Stage/Area Calculations). Existing Conditions were evaluated using the SWFWMD Cypress Creek ICPR model (see Appendix C for Existing Conditions ICPR Model Results followed by the Input).

The node reach diagram delineates location of basins north The node reach diagram for the ICPR model identifies the upstream offsite basin as M4480 in the northwest corner of the intersection of Collier at Livingston and the northeast corner of the intersection in the downstream offsite basin as M4440 that includes Turtle Lake (see Figure 2 below for the Node Reach Diagram). As shown in Figure 2, flow from basin M4480 travels to the basin on west side of the project area (M4440W) to the basin in the east side (M4440E) via an existing 24’ cross drain (CBC) before discharging to basin M4440 (Turtle Lake). The Node Reach Diagram shown on Figure 2 also identifies the existing 100-year floodplain stages from the Cypress Creek ICPR Model.

Project Basin (M1620) Basin M1620 is in the northern portion of the project area from Station 34+00 to Station 62+00 on the west side of Livingston Road. Runoff from this basin flows westerly to storage node NM1620.

Discharge from NM1620 is directed southwesterly to NM1600 of Basin M1600.

Project Basin (M1600) Basin M1600 is in the northern portion of the project area from Station 26+00 to Station 34+00 on the west side of Livingston Road. Runoff from this basin flows westerly to storage node NM1600.

Discharge from NM1600 is directed southwesterly to NM4460 of Basin M4460.

Project Basin (M4420) Basin M4420 is in the northern portion of the project area from Station 34+00 to Station 62+00 on the east side of Livingston Road. Runoff from this basin flows westerly to storage node NM4420.

Discharge from NM4420 is directed westerly to NM1620 of Basin M1620.

Project Basin (M4440EN) Basin M4420 is in the northern portion of the project area from Station 18+00 to Station 34+00 on the east side of Livingston Road. Runoff from this basin flows westerly to storage node NM4420.

Discharge from NM4420EN is directed westerly to NM1620EN of Basin M1620.

Project Basin (M4460N) Basin M4460N is in the northern portion of the project area from Station 23+00 to Station 26+00 on the west side of Livingston Road. Runoff from this basin flows westerly to storage node NM4460. Discharge from NM4460 is directed southwesterly to NM4480 of Basin M4480.

Project Basin (M4480) Basin M4480 is in the western portion of the project area. Runoff from this basin flows to storage node NM4480. Discharge from NM4480 is directed southwesterly through overland weir RM4480B to an offsite basin. Discharge from NM4480 also flows easterly through overland weir RM4480C to the project area basin M4440W.

Project Basin (M4440W) Discharge from basin M4480 flows through the overland RM4480C along with onsite runoff from the western half of the project area (basin M4440W) flow into the 100-year floodplain (M4440W) on the west side of Livingston from Station 13+00 to Station 18+00. Flow continues westerly under Livingston through a 29-foot long, 29”x45”, cross drain (RM4440W) to node NM4440E of project basin M4440E.

Project Basin (M4440E) Discharge from RM4440W along with onsite runoff from the eastern half of the project area (basin M4440E) flow into the roadside ditch/storage area (NM4440E) on the east side of Livingston from Station 12+00 to Station 18+00. Flow continues easterly through an overland weir to the downstream node NM4440 of basin M4440 (Turtle Lake).

Basin (M4440) Basin M4440 is east of the project area. Discharge from the project area via the overland weir (RM4440E) along with runoff from basin M4440 flows to storage node NM4440 (Turtle Lake).

Discharge from NM4440 (Turtle Lake) is directed southerly through overland weir RM4440B and culvert RM4440A with ultimate outfall to BNDY10. BNDY10 is located approximately 200 feet south of County Line Road and approximately 500 feet east of Livingston Road.

Project Basin (M4440N) M4420N is in the eastern portion of the project area along north side of County Line Road from Station 10+60 to Station 28+00. Runoff from basin M4420N is collected by the roadside ditch that discharges to node NM4440.

Project Basin (M4480D) M4480D is in the southwestern portion of the project area along north side of Collier Parkway from Station 0+00 to Station 10+00. Runoff from basin M4480D is collected by the roadside ditch that discharges to the upstream basin M4480.

Project Basin (MSCLR) The basin south of Collier Parkway/County Line Road (MSCLR) is in the southern portion of the project area. Runoff from MSCLR area sheet flows to an existing storm drain system that ultimately discharges to BNDY10.

Design Criteria The design parameters are as follows:

• existing drainage patterns and outfall locations will remain for proposed conditions

• no stormwater management pond required

• no water quality treatment required

• use SWFWMD Cypress Creek Watershed ICPR model to verify that the mean annual (2.33yr/24h), 5yr/24h, 10yr/24h, 25yr/24hr, and 100yr/24hr (10.75) storm events will not increase water surface stages upstream or downstream of the project area

Proposed Design Proposed drainage discharges to wetland systems that conveyed flow from north to the south before discharging to Turtle Lake with ultimate outfall to wetland systems south of County Line Road east of Livingston Road in Hillsborough County. Existing drainage patterns in northern portions of the project area flow easterly and westerly of the alignment to adjacent wetlands (see the below proposed Figure 3 Proposed Drainage Map). The eastern wetlands in the northern portion flow westerly through existing cross drains to western wetlands. The wetland system flows southerly to the northeast corner of Collier Parkway/Livingston before flowing easterly via an existing cross drain that ultimately discharge to Turtle Lake (see Figure 4 for proposed drainage basins, wetlands, and floodplain stages). North of Basin M4440, a portion of grass impervious area will be replaced with impervious area consisting of proposed paved shoulder along both sides of the alignment and concrete sidewalk area on the west side. Basins north of M4440 include: M1620 on the west side of Livingston Road and M4420 on the west side. The proposed ICPR model was also updated to represent these proposed impervious areas.

The proposed ICPR model includes peak stages for the 100-year floodplain area in all wetland basins. Floodplain impacts occur in Basin M4440 along the west side of Livingston Road from Station 13+00 to Station 18+00. Floodplain impacts also occur in Basin M4480 along the north side of Collier Parkway from Station 0+00 to Station 10+00. Floodplain compensation is provided by “cup for cup” excavating adjacent to the area of impact (see Appendix D for Proposed Drainage Basin Calculations and Stage/Area Calculations).

Additional impervious area and reduced storage in proposed conditions is insignificant as demonstrated by the model results.

Proposed Conditions were evaluated using the Cypress Creek ICPR model (see Appendix E for Proposed Conditions ICPR Model Results and followed by the Input). The node reach diagram for the ICPR model identifies the western offsite basin as M4480 and the eastern offsite basin as M4440 (see Figure 4 below for the Node Reach Diagram). As shown on the diagram and described below, flow from basin M4480 travels through the project area (M4440W and M4440E) before discharging to basin M4440.

Seasonal High Ground Water Along the west side of Livingston Road from Station 13+00 to Station 18+00, the seasonal high ground water table (SHGWT) of 64.0’ was determined using the soil boring logs provided in the Geotechnical Report (see Appendix F). The boring logs indicate the SHGWT to be 2’ below the existing ground surface of 66’ which equates to a SHGWT of 64.0’. The SHGWT of 64.0’ was set as the initial stage for 100-year floodplain storage node (NM4440W) on the west side of the Livingston Road. On the east side of Livingston, the initial stage was set at the cross-drain flowline elevation of 64.04 at the roadside ditch bottom (NM4440E).

Along the north side of Collier Parkway from Station 0+00 to Station 10+00, the estimated seasonal high ground water table (SHGWT) of 62.0’ was determined using the soil boring logs provided in the Geotechnical Report (see Appendix F).

Project Basin (M1620) Basin M1620 is in the northern portion of the project area from Station 34+00 to Station 62+00 on the west side of Livingston Road. Runoff from this basin flows westerly to storage node NM1620.

Discharge from NM1620 is directed southwesterly to NM1600 of Basin M1600.

Project Basin (M1600) Basin M1600 is in the northern portion of the project area from Station 26+00 to Station 34+00 on the west side of Livingston Road. Runoff from this basin flows westerly to storage node NM1600.

Discharge from NM1600 is directed southwesterly to NM4460 of Basin M4460.

Project Basin (M4420) Basin M4420 is in the northern portion of the project area from Station 34+00 to Station 62+00 on the east side of Livingston Road. Runoff from this basin flows westerly to storage node NM4420.

Discharge from NM4420 is directed westerly to NM1620 of Basin M1620.

Project Basin (M4440EN) Basin M4420EN is in the northern portion of the project area from Station 18+00 to Station 34+00 on the east side of Livingston Road. Runoff from this basin flows westerly to storage node NM4420EN. Discharge from NM4420EN is directed westerly to NM1620EN of Basin M1620.

Project Basin (M4460N) Basin M4460N is in the northern portion of the project area from 23+00 to 26+00 on the west side of Livingston Road. Runoff from this basin flows westerly to storage node NM4460. Discharge from NM4460 is directed southwesterly to NM4480 of Basin M4480.

Project Basin (M4480) Basin M4480 is in the western portion of the project area. Runoff from this basin flows to storage node NM4480. Discharge from NM4480 is directed southwesterly through overland weir RM4480B to an offsite basin. Discharge from NM4480 also flows easterly through overland weir RM4480C to the project area basin M4440W.

Project Basin (M4440W) Discharge from basin M4480 flows through the overland RM4480C along with onsite runoff from the western half of the project area (basin M4440W) flow into the 100-year floodplain (M4440W) on the west side of Livingston from Station 13+00 to Station 23+00. Flow continues westerly under Livingston through a 29-foot long, 29”x45”, cross drain (RM4440W) to node NM4440E of project basin M4440E.

Project Basin (M4440E) Discharge from RM4440W along with onsite runoff from the eastern half of the project area (basin M4440E) flow into the roadside ditch/storage area (NM4440E) on the east side of Livingston from Station 12+00 to Station 18+00. Flow continues easterly through an overland weir to the downstream node NM4440 of basin M4440 (Turtle Lake).

Basin (M4440) Basin M4440 is east of the project area. Discharge from the project area via the overland weir (RM4440E) along with runoff from basin M4440 flows to storage node NM4440 (Turtle Lake).

Discharge from NM4440 (Turtle Lake) is directed southerly through overland weir RM4440B and culvert RM4440A with ultimate outfall to BNDY10. BNDY10 is located approximately 200 feet south of County Line Road and approximately 500 feet east of Livingston Road.

Project Basin (M4440N) M4440N is in the eastern portion of the project area along north side of County Line Road from Station 10+60 to Station 28+00. Runoff from basin M4420N is collected by the roadside ditch that discharges to node NM4440.

Project Basin (M4480D) M4480D is in the southwestern portion of the project area along north side of Collier Parkway from Station 0+00 to Station 10+00. Runoff from basin M4480D is collected by the roadside ditch that discharges to the upstream basin M4480.

Project Basin (MSCLR) The basin south of Collier Parkway/County Line Road (MSCLR) is in the southern portion of the project area. Runoff from MSCLR area sheet flows to an existing storm drain system that ultimately discharges to BNDY10.

Results Modeling results as shown in the below table demonstrate that storms for the 2.33y/24hr, 10yr/24hr, 25yr/24hr, and 100yr/24hr events for proposed improvements will not have an adverse impact on adjacent property.

The Cypress Creek Watershed ICPR modeling evaluates surface water stages in basin nodes upstream and downstream of the project area. Flow from the western offsite basin (M4480) discharges easterly through an overland weir (RM4480C) into a 100-yr Floodplain area (NM4440W) on the west side (M4440W) of Livingston Road, continues through a cross drain (RM4440W) under Livingston to a roadside ditch/storage area (NM4440E) on the east side (M4440E) of Livingston before discharging through an overland weir to the eastern offsite basin (M4440) of Turtle Lake (see the Cypress Creek ICPR Modeling Results).

It should be noted in the above table, that the some of the 10yr, 2.33yr, and 25yr Proposed Conditions stages for nodes NM4440W and NM4440E are higher than the Existing Condition stages. These nodes are contained within the Livingston Road right-of-way. Furthermore, Proposed Conditions stages in nodes on offsite property upstream and downstream of the project increase by not more than 0.02 feet, which is insignificant. Therefore, the proposed project will not create adverse impacts onsite or to surrounding property upstream or downstream of the project area.

APPENDIX A

SWFWMD Pre Application Meeting Minutes

Environmental Narrative SWERP Section A SWERP Section C SWERP Section E

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 410584

Date:

Time:

Project Name:

7/20/2023 09:00am Collier Parkway at Livingston Road Intersection Improvements

District Engineer: Beth Geurink District ES: Al Gagne Attendees: Thomas Ward, Jeff Siewert, Nancy Scott, Sierra Lauck County:

Total Land Acreage:

Pasco County Sec/Twp/Rge:

Project Acreage:

05/27/19 & 32/26/19 Less than 10 acres

Prior On-Site/Off-Site Permit Activity:

• 23663.003 not constructed, 23663.002 (offsite mitigation plan related to .001); 23663.001 intersection realignment with one online retention pond; 23663.000 (exemption for turn lane); previous pre-app 408033

Project Overview:

• One proposed Left Turn Lane and one proposed Right Turn Lane at Collier Parkway. Proposed paved shoulders from Collier Parkway to SR 54. Proposed sidewalk (1475 LF) to fill in pedestrian access gap along north side of Collier Pkwy, west of Livingston.

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.)

• There are wetlands/surface waters located within the project area. Impacts are proposed.

• 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.

• Demonstrate elimination and reduction of wetland impacts. The elimination and reduction criteria can be found in subsection 10.2.1 of Applicant’s Handbook Volume 1. Be advised that the use of subsection

10.2.1.2 (a) of the handbook may put the project in conflict with the state’s 404 program. Coordination with the DEP, the during application review process, is recommended if the applicant wishes to use subsection

10.2.1.2 (a).

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

• Provide appropriate mitigation using UMAM for impacts, if applicable.

• The site is located in the Hillsborough River ERP Basin. Mitigation Banks that serve this area include the

Hillsborough River and North Tampa mitigation banks. For an interactive map of permitted mitigation banks and their service areas, use this LINK. Be advised that use of a bank with a modified service area (i.e. a service area that is larger than the basin the bank is located in), may require the submittal of a cumulative impact analysis pursuant to subsection 10.2.8 of Applicant’s Handbook volume 1.

• If the wetland mitigation is appropriate and the applicant is proposing to utilize mitigation bank credit as wetland mitigation, provide a letter of reservation of credits from the wetland mitigation bank. The wetland mitigation bank current credit ledgers can be found out the following link:

https://www.swfwmd.state.fl.us/business/epermitting/environmental-resource-permit, Go to “ERP Mitigation Bank Wetland Credit Ledgers”

• Please note, the Florida Department of Environmental Protection (FDEP) has assumed the Federal dredge and fill permitting program under section 404 of the Federal Clean Water Act within certain waters. State 404 Program streamlining intentions direct Agency staff to coordinate joint site visits for overall consistency between the two State programs. As such, District staff and the FDEP will need to conduct a joint site visit for evaluation of the wetland/surface water systems proposed for impact. District staff will coordinate with FDEP staff on determining dates/times of joint Agency availability. Upon determination of joint availability, 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.

RESOURCE REGULATION DIVISION

PRE-APPLICATION MEETING NOTES

FILE

NUMBER:

PA 410584

Date:

Time:

Project Name:

7/20/2023 09:00am Collier Parkway at Livingston Road Intersection Improvements

District Engineer: Beth Geurink District ES: Al Gagne Attendees: Thomas Ward, Jeff Siewert, Nancy Scott, Sierra Lauck County:

Total Land Acreage:

Pasco County Sec/Twp/Rge:

Project Acreage:

05/27/19 & 32/26/19 Less than 10 acres

Prior On-Site/Off-Site Permit Activity:

• 23663.003 not constructed, 23663.002 (offsite mitigation plan related to .001); 23663.001 intersection realignment with one online retention pond; 23663.000 (exemption for turn lane); previous pre-app 408033

Project Overview:

• One proposed Left Turn Lane and one proposed Right Turn Lane at Collier Parkway. Proposed paved shoulders from Collier Parkway to SR 54. Proposed sidewalk (1475 LF) to fill in pedestrian access gap along north side of Collier Pkwy, west of Livingston.

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.)

• There are wetlands/surface waters located within the project area. Impacts are proposed.

• 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.

• Demonstrate elimination and reduction of wetland impacts. The elimination and reduction criteria can be found in subsection 10.2.1 of Applicant’s Handbook Volume 1. Be advised that the use of subsection

10.2.1.2 (a) of the handbook may put the project in conflict with the state’s 404 program. Coordination with the DEP, the during application review process, is recommended if the applicant wishes to use subsection

10.2.1.2 (a).

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

• Provide appropriate mitigation using UMAM for impacts, if applicable.

• The site is located in the Hillsborough River ERP Basin. Mitigation Banks that serve this area include the

Hillsborough River and North Tampa mitigation banks. For an interactive map of permitted mitigation banks and their service areas, use this LINK. Be advised that use of a bank with a modified service area (i.e. a service area that is larger than the basin the bank is located in), may require the submittal of a cumulative impact analysis pursuant to subsection 10.2.8 of Applicant’s Handbook volume 1.

• If the wetland mitigation is appropriate and the applicant is proposing to utilize mitigation bank credit as wetland mitigation, provide a letter of reservation of credits from the wetland mitigation bank. The wetland mitigation bank current credit ledgers can be found out the following link:

https://www.swfwmd.state.fl.us/business/epermitting/environmental-resource-permit, Go to “ERP Mitigation Bank Wetland Credit Ledgers”

• Please note, the Florida Department of Environmental Protection (FDEP) has assumed the Federal dredge and fill permitting program under section 404 of the Federal Clean Water Act within certain waters. State 404 Program streamlining intentions direct Agency staff to coordinate joint site visits for overall consistency between the two State programs. As such, District staff and the FDEP will need to conduct a joint site visit for evaluation of the wetland/surface water systems proposed for impact. District staff will coordinate with FDEP staff on determining dates/times of joint Agency availability. Upon determination of joint availability, staff will provide the applicant’s representative with site visit scheduling options. A site visit will not be scheduled until the appropriate signatures on the application and the fee is submitted.

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

• Existing roadway/intersections –Livingston Road from Collier Pkwy to SR 54

• Cypress Creek Watershed (Pasco County)

• WBIDs need to be independently verified by the consultant - WBID 1402- Cypress Creek is not attaining standards for dissolved oxygen at this time per Water Quality Assessments, TMDLs, and BMAPs and Assessment Lists

• Portions of the right of way may discharge to closed basins

• Document/justify SHWE’s at pond locations, wetlands, and OSWs.

• Determine normal pool elevations of wetlands.

• Determine ‘pop-off’ locations and elevations of wetlands.

• Provide documentation to support tailwater conditions for any cross drain culvert designs

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

- FDEP PCTS Site ID No. 9501859 located on parcel at NE corner of intersection of Collier Pkwy & Livingston. Also PCTS Site ID 8732281 at SE corner of Livingston & SR 54. If within 100 ft of project activities (esp. dewatering) please verify with FDEP if any have current contamination issues.

For known contamination within the site or within 100’ 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.

For known offsite contamination between 100’ 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 100 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.

FDEP Contacts:

- For projects located within Citrus, Hernando, Pasco, Hillsborough, Pinellas, Manatee, Polk and Hardee Counties: Phil Wilkerson; Philip.wilkerson@floridadep.gov

• Any wells within project area should be identified and their future use/abandonment must be designated.

• Several high water data points, flooding complaints noted along Livingston.

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

• Recommend using the regional Cypress Creek watershed model to evaluate any fill encroachment to floodplain or historic basin storage as well as any altered pipe crossings/extended culverts. Although the activities would qualify for safety exemptions were it not for wetland impacts, the closed/volume sensitive nature of the area and historic flooding complaints warrant modeled assurance of no adverse impact.

• 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).

• Watershed Model information may be available for download using the following link:

https://watermatters.sharefile.com/d-s8c9019e00fd243908654e733a6b2016c

• 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.

• Please be aware that if there is credible historical evidence of past flooding or the physical capacity of the downstream conveyance or receiving waters indicates that the conditions for issuance will not be met without consideration of storm events of different frequency or duration, applicants shall be required to provide additional analyses using storm events of different duration or frequency than the 25-year 24-hour storm event, or to adjust the volume, rate or timing of discharges. [Section 3.0 Applicant’s Handbook Volume II]

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

• Presumptive water quality treatment will not be required so long as the criteria for 62-330.051(4)c exemption

(except wetland impact) have been demonstrated to apply.

• If criteria are exceeded and treatment is justified, net improvement for nutrients will also apply and applicant must demonstrate a net improvement for the parameters of concern by performing a pre/post pollutant loading analysis based on existing land use and the proposed land use.

• Note that in that case the project would be evaluated using the standards applied to existing public roadway projects (Refer to Section 4.5 A.H.V.II)

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. Authorization signatures should be from appropriate level staff member.

Application Type and Fee Required:

• SWERP – Sections A, C, and E of the ERP Application. Unless the activities will impact the Pond 100 or associated drainage structures of 23663.001, a new individual SWERP permit would be appropriate. If the current permitted stormwater management system WILL be modified, then the new SWERP permit will also modify that authorization.

• < 10 acres of project area and < 1 acre wetland or surface water impacts - $2,184.00 Online Submittal

• < 10 acres of project area and < 3 acres wetland or surface water impacts - $2,491.50 Online Submittal

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.

• Provide a copy of the legal description (of all applicable parcels within the project area) in one of the following forms:

a. Deed with complete Legal Description attachment.

b. Plat.

c. Boundary survey of the property(ies) with a sketch.

• 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; 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.

• On December 17, 2020, the Environmental Protection Agency (EPA) formally transferred permitting authority under CWA Section 404 from the U.S. Army Corps of Engineers (Corps) to the State of Florida for a broad range of water resources within the State. The primary State 404 Program rules are adopted by the Florida Department of Environmental Protection (FDEP) as Chapter 62-331 of the Florida Administrative Code (F.A.C.). While the State 404 Program is a separate permitting program from the Environmental Resource Permitting program (ERP) under Chapter 62-330, F.A.C., and agency action for State 404 Program verifications, notices, or permits shall be taken independently from ERP agency action, the FDEP and the Southwest Florida Water Management District (SWFWMD) will be participating in a Joint application Process. Upon submittal of an ERP application that proposes dredge/fill activities in wetlands or surface waters within state assumed waters, the SWFWMD will forward a copy of your application to the FDEP for activities under State 404 jurisdiction. The applicant may choose to have the State 404 Program and ERP agency actions issued concurrently to help ensure consistency and reduce the need for project modifications that may occur when the agency actions are issued at different times. Additional information on the FDEP’s 404 delegation can be found at: https://floridadep.gov/water/submerged-lands-environmental-resources-coordination/content/state-404-program

Additionally, for those projects located in areas where the Corps retains jurisdiction, the applicant is advised that the District will not 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/

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.

1941 aerial Red circled area is remnant wetland area that was historically part of Turtle Lake.

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; 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.

COLLIER PARKWAY AT LIVINGSTON ROAD

INTERSECTION IMPROVEMENTS

Pasco County, FL

ENVIRONMENTAL RESOURCE PERMIT APPLICATION

Environmental Narrative

Submitted to:

Southwest Florida Water Management District

Prepared for:

Pasco County

Prepared by:

Earth Resources, Inc.

www.earthresources.us 813-333-2971

March 21, 2024

[Grab your reader’s

Environmental Resource Permit Application

Table of Contents

INTRODUCTION

1.0 PROJECT DESCRIPTION

1.1 Wetlands and Surface Waters

1.2 Soils

2.0 LISTED SPECIES

3.0 AVOIDANCE & MINIMIZATION OF WETLAND IMPACTS

4.0 WETLAND IMPACTS & MITIGATION

4.1 UMAM

Table 1. Wetland and Surface Water Impact Summary Table 2. UMAM Summary

List of Attachments ATTACHMENT A USGS Topographic Map ATTACHMENT B Approved Wetland Survey and Petition ATTACHMENT C Wetland and Surface Water Location Map ATTACHMENT D FLUCFCS Land Use Map ATTACHMENT E Soils Map ATTACHMENT F UMAM Worksheet

INTRODUCTION

This environmental narrative is being submitted in support of an Individual Environmental Resource Permit application in accordance with Chapter 62-330.054, F.A.C. The project is located in Pasco County in Section 5, Township 27 South, Range 19 East and Section 32, Township 26 South, Range 19 East. A location map can be found below. Refer to Attachment A for a USGS topo map.

1.0 PROJECT DESCRIPTION

The proposed project involves improvements to the intersection including adding turn lanes, resurfacing and re-marking. Currently, Livingston Road is a two-lane rural section and Collier Boulevard is a four-lane divided roadway.

1.1 Wetlands and Surface Waters

Seven wetlands were documented to occur within the project area and six were flagged in the field. The wetlands total 1.580 acres, and 0.298 acres are proposed to be permanently impacted by the project. Wetland descriptions and a wetland impact summary (Table 1) can be found below.

Table 1. Wetland and Surface Water Impact Summary

WL1 641 641 0.285 0.278 ----- ----- 0.007 F Hillsborough River Mitigation Bank Phase II

WL2 641 641 0.612 0.573 ----- ----- 0.039 F Hillsborough River Mitigation Bank Phase II

WL3 631 631 0.277 0.230 ----- ----- 0.047 F Hillsborough River Mitigation Bank Phase II

WL4 631 631 0.100 0.048 ----- ----- 0.052 F Hillsborough River Mitigation Bank Phase II

WL5 N/A 641 0.121 0.121 ----- ----- 0.000 -----

WL6 N/A 641 0.032 0.032 ----- ----- 0.000 -----

WL7 (Hydric Cut

OSW)

N/A 510 0.153 0.000 ----- ----- 0.153 F Exempt from mitigation in accordance with

Chapter 10.2.2.2 of the Applicant's Handbook

PROJECT TOTALS: 1.580 1.282 0.000 0.298

WL & SW ID

UMAM ASSESSMENT

AREA NAME(S)

WL & SW

TYPE

WL & SW

SIZE

WL & SW

NOT

IMPACTED

IMPACT

SIZE

(acres)

MITIGATION IDIMPACT

SIZE

(acres)

TEMPORARY WL & SW

IMPACTS

PERMANENT WL & SW

IMPACTS

IMPACT

TYPE

(acres)

IMPACT

TYPE

(acres)

Wetland 1 – 0.285 acre FLUCFCS: 641 (Freshwater Marsh) Wetland 1 is an emergent herbaceous wetland dominated by vegetation such as swamp fern (Telmatoblechnun serrulatum), Carolina willow (Salix caroliniana), Peruvian primrose willow (Ludwigia peruviana), and duckweed (Lemna sp.) covering the open water portion. The edges contain swamp bay (Persea palustris) and dahoon holly (Ilex cassine). The wetland area located within the project right-of-way totals 0.285 acre. The project will result in 0.007 The wetland impacts will be offset at the Hillsborough River Mitigation Bank Phase II

Wetland 2 – 0.612 acre FLUCFCS: 641 (Freshwater Marsh) Wetland 2 is an herbaceous marsh with a forested fringe. There is a pond to the north with a walled weir bordering the wetland. Vegetation within the system consists of dominantly arrowhead (Sagittaria lancifolia), Peruvian primrose willow, maidencane (Hymenachne hemitomon), sand cordgrass (Spartina bakeri), pickerelweed (Pontederia cordata) and softstem bullrush (Scirpus validus) and club-moss (Lycopodium sp.). The forested fringe vegetation consists of red maple (Acer rubrum), water oak (Quercus nigra), Carolina willow, swamp bay, and sweet bay (Magnolia virginiana). This wetland is connected to Wetland 3 on the east side of Livingston Road via culvert. The wetland area located within the project right-of-way totals

0.612 acre. The project will result in 0.039 acre of impact to Wetland 2. This impact is necessary to construct a sidewalk along Livingston Rd. The proposed construction will improve the safety of Livingston Rd by adding sidewalks along the western side of the road. The wetland impacts will be offset at the Hillsborough River Mitigation Bank Phase II.

Wetland 3 – 0.277 acre FLUCFCS: 631 (Wetland Scrub) Wetland 3 is an herbaceous wetland dominated by primrose willow and Carolina willow.

Standing water was present during the assessment. The wetland has steep slopes on the southern side of the wetland. The wetland area located within the project right-of-way totals

0.277 acre. The project will result in 0.047 acre of impact to Wetland 3. This impact is necessary to pave the shoulder to improve road safety. The wetland impacts will be offset at the Hillsborough River Mitigation Bank Phase II.

Wetland 4 – 0.100 acre FLUCFCS: 631 (Wetland Scrub) Wetland 4 is an herbaceous wetland dominated by Peruvian primrose willow and Carolina willow Standing water was present during assessment. The wetland has steep slopes on the southern side of the wetland. The wetland area located within the project right-of-way totals

0.100 acre. The project will result in 0.052 acre of impact to Wetland 4. This impact is necessary to pave the shoulder to improve road safety. The wetland impacts will be offset at the Hillsborough River Mitigation Bank Phase II.

Wetland 5 – 0.121 acre FLUCFCS: 641 (Freshwater Marsh) Wetland 5 is an herbaceous wetland dominated by pond lily (Nuphar advena), water lily (Nymphaea spp.), Juncus (Juncus spp.), torpedograss (Panicum repens), water spangle (Salvinia minima), button bush (Cephalantus occidentalis) and arrowhead (Sagittaria latifolia). Red maple and laurel oak (Quercus lauifolia). The wetland area located within the project right-of-way totals 0.121 acre. No impacts to this wetland are proposed.

Wetland 6 – 0.032 acre FLUCFCS: 641 (Freshwater Marsh) Wetland 6 is an emergent herbaceous wetland dominated by vegetation such as swamp fern, Carolina willow, Peruvian primrose willow and duckweed covering the open water portion. The edges contain swamp bay and dahoon holly. The wetland area located within the project right-of-way totals 0.032 acre. No impacts to this wetland are proposed.

Wetland 7 – 0.142 acre FLUCFCS: 510 (Streams and Waterways) The boundary of Wetland 7, a hydric cut Other Surface Water (OSW) was previously approved by a Petition for Formal Determination Wetlands and Surface Waters (No. 42027420.002) issued by SWFWMD on November 14, 2016 for a project named Livingston Church. These boundaries were valid until November 2021. A copy of the approved wetland survey and petition can be found in Attachment B. ERP No. 43027420.004 was issued on July 14, 2021 for Heritage Christian Center. limits of this system remained the same upon field inspection conducted by Earth Resources on July 25, 2023. The total area of this system is 0.153 acres. The wetland will be impacted in its entirety. Due to the total size of the wetland being less than 0.5 acre and isolated, this wetland is exempt from mitigation in accordance with Chapter 10.2.2.2 of the Applicant’s Handbook.

A wetland location map can be found in Attachment C. A Florida Land Use Cover and Forms and Classification System (FLUCFCS) Map can be found in Attachments D

1.2 Soils

Soils were mapped utilizing data obtained from the NRCS. The site is characterized by non-hydric soils including Tavares sand and Quartzipsamments with lesser amounts of Smyrna Fine Sand and hydric soil Sellers sand. Please refer to Attachment E for a soils map.

2.0 LISTED SPECIES

The project site was assessed for the presence of listed species and their habitats. Listed species are defined as those species identified by the U.S. Fish and Wildlife Service (FWS) or Florida Fish and Wildlife Conservation Commission (FWC) as endangered, threatened, or species of special concern.

To determine federal and state listed protected plant and…