1 bexley ranch tower road – bexley village drive to ballantrae

Transcription

BEXLEY RANCH
TOWER ROAD – BEXLEY VILLAGE DRIVE TO
BALLANTRAE BOULEVARD
ENVIRONMENTAL DISCUSSION
AND WETLAND IMPACT NARRATIVE
Introduction
The property included in this Environmental Resource Permit (ERP) request is limited to a
±34.46-acre linear parcel referred to as Tower Road – Bexley Village Drive to Ballantrae
Boulevard (Tower Road) located near Land O’ Lakes, Florida. The site is specifically located on
the southwest corner of the overall Bexley Ranch and the northern limits of the Ashley Glen
property (Location Map). The Tower Road project area is bordered by the Tampa Bay Water
pipeline easement and future residential development to the north, privately owned land to the
south, and the Suncoast Parkway to the west (Aerial Photograph). This area will be developed as
a regional collector road serving the future Bexley Ranch community and adjoining
neighborhoods in accordance with the Pasco County Regional Transportation Plan.
The project site is a combination of two separate parcels owned by NNP-Bexley (NNP),
including Bexley Ranch and the recently acquired Ashley Glen, both now formally known as
Bexley South. Bexley Ranch is a proposed mixed-use development located north of (and
including) Tower Road and east of the Suncoast Parkway. The Ashley Glen parcel is located
south of Bexley Ranch and is surrounded by a mix of commercial, residential, and agriculture
lands (Quad Map, Aerial Photograph).
A number of small wetland impacts will be required to construct Tower Road. The majority of
the proposed impacts were previously reviewed and approved under the Bexley Ranch ERP No.
43013740.004 and Ashley Glen Boulevard ERP No. 49024788.10 as described in detail below.
Please note that the currently proposed Tower Road project area is a 34.46-acre subset of the
area covered in the existing ERP’s as discussed in the following paragraphs.
Permitting History
Bexley Ranch Phase 1 – ERP No. 43013740.004
The ERP for the Bexley Ranch Phase 1 residential development was issued March 25,
2008, with an expiration date of March 25, 2013. Prior to the expiration of the permit, a
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request to extend the permit expiration date was approved, with the expiration date of the
authorized work extended to June 15, 2017.
The work authorized in this initial ERP for Bexley Ranch included the development of a
1,716.8-acre mixed-use community with permanent wetland and surface water impacts
totaling 23.79 acres. The project also included 0.20 acre of temporary wetland impacts.
As approved, the wetland impacts resulted in 6.36 units of functional loss using the
Uniform Mitigation Assessment Method (UMAM). Wetland mitigation for the project
consisted of 80.38 acres of forested and herbaceous wetland creation which provided
18.19 units of functional lift, a surplus of 11.83 units of lift. This excess mitigation is to
be used for future wetland impacts associated with future phases of the development.
Ashley Glen Boulevard – ERP No. 49024788.10
The ERP for the Ashley Glen Boulevard was issued October 28, 2008, with an expiration
date of October 28, 2013. Prior to the expiration of the permit, a request to extend the
permit expiration date was approved, with the expiration date of the authorized work
extended to October 28, 2018.
The work authorized in this ERP for Ashley Glen Boulevard included the construction of
Ashley Glen Boulevard from the Suncoast Commercial development north to Bexley
Ranch and the associated stormwater management system within an 81.57-acre project
area. The project required permanent wetland and surface water impacts totaling 4.08
acres, resulting in 0.51 units of functional loss using the UMAM. Wetland mitigation for
the project consisted of 2.89 acres of wetland creation which provided 0.89 units of
functional lift.
As noted above, the current project limits for Tower Road is a ±34.46-acre subset of the Bexley
Ranch ERP and the Ashley Glen Boulevard ERP. Within the current Tower Road project limits,
there are a total of 1.39 acres of wetland and 0.13 acres of surface water impacts previously
approved as a part of ERP No. 43013740.004 and 49024788.10. A map of the originally
approved wetland impacts located within the Tower Road project limits is included with this
submittal (Previously Approved SWFWMD Wetland Impacts Map).
Habitat Description
The project area consists of a mixture of uplands and wetlands which have been altered by
human activity, including agriculture, construction of Tampa Bay Water pipelines and an
abandoned railroad (Landuse Map). Within the Tower Road project area, there are a total of
4.61 acres of wetlands and 0.22 acres of other surface waters (Table 1) (see SWFWMD Wetland
Map). Wetland boundaries and hydroperiod elevations have been reviewed and approved by the
Southwest Florida Water Management District (SWFWMD) as a part of the previous permitting
efforts. The on-site wetlands are limited to several shallow herbaceous marshes, all of which
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have been disturbed by past human activities. Uplands on site consist of a farm road located on
the abandoned railroad bed and bahia grass pasture which is currently used for cattle grazing and
sod production. There are no native, undisturbed upland habitats within the project area.
Proposed Development Plan
Subsequent to the issuance of ERP’s No. 43013740.004 and 49024788.10, plans to develop the
property were suspended as a result of the economic recession, with no construction/
development related work initiated at the site. During this time, and continuing to the present,
the property has been used for agriculture operations, including cattle and sod farming. The
existing agriculture use and condition of the property has remained unchanged since issuance of
the two ERP’s.
With the end of the recession, the housing market has rebounded and NNP is planning to
commence development of Ashley Glen and Bexley Ranch as a residential community as
previously envisioned. However, as a result of the recession, discussions with Pasco County and
changes in Pasco County land development rules, several minor adjustments to the previously
permitted construction plans are needed to account for market changes, land development rule
changes, and regional civic needs to support anticipated population growth. Despite these
changes, the proposed site plan is still consistent with the existing approved development plans
and the associated (approved) wetland impacts. The proposed overall development plan includes
the following revisions:

Updating lot layout to address changes in market/product demand,

Adjusting development plan to be compliant with the Pasco County Geological Hazards
Ordinance,

Minor revisions to internal road network to account for changes to lot layouts,

Realignment of collector roads to provide safer/improved transportation corridors and
intersection at the request of Pasco County, and

New (additional) elementary school added to the plan at the request of Pasco County to
accommodate planned regional population growth.
The most significant of the proposed site plan changes relevant to the Tower Road application is
the realignment of Bexley Boulevard and the inclusion of a roundabout as requested by Pasco
County. As currently permitted, Bexley Boulevard intersected Tower Road approximately 1,800
feet east of the proposed roundabout at a signalized “T” intersection. From this intersection,
Tower Road continued west and south into the Ashley Glen subdivision. With the acquisition of
the Ashley Glen property by NNP, the ability to redesign the internal collector road network was
now possible, with the resulting design utilizing a large roundabout in place of a traffic signal.
As designed, the new intersection eliminates major curves (blind spots) on the approaches to the
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roundabout thereby providing increased traffic visibility. The roundabout also allows continuous
traffic flow for five separate entry points at the intersection of Bexley Boulevard and Tower
Road without the need for signalization. As designed, the proposed roundabout provides an
increased level of public safety and improved traffic flow patterns over the permitted road
alignment.
A summary of all impacts associated with Tower Road is provided in ERP Table 1 at the end of
this report. The revised site plan depicting the wetland impact changes is shown on the enclosed
Wetland Impact Comparison Map.
Proposed Wetland Impacts
Note: For this wetland impact request, only the proposed new wetland and surface water impacts
are specifically addressed in this discussion. The remaining wetland impacts approved under
ERP’s No. 43013740.004 and 49024788.10 for the proposed Bexley Ranch and Ashley Glen
residential development are unchanged and, therefore, considered as still valid with no further
justification or avoidance and minimization required for this application review.
As proposed, the Tower Road plan will result in 1.57 acres of permanent wetland impacts and
0.13 acres of permanent impacts to man-made surface waters (Wetland Impact Map). Of these
impacts, there is one 0.19-acre permanent impact to wetland 19-5 not currently approved in
ERP’s No. 43013740.004 and 49024788.10. Wetland 19-5 is a shallow wetland previously
impacted by the installation of the Tampa Bay Water transmission pipeline. This wetland was
historically forested prior to impact by the pipeline installation that resulted in its conversion to a
herbaceous marsh. Dominant vegetation consists of wetland grasses and forbs. This impact is
the result of the realignment of Bexley Boulevard and the inclusion of the roundabout in to the
site plan.
Wetland Functional Assessment
An assessment of the proposed wetland impacts was conducted using UMAM. Based on this
analysis, the proposed wetland impacts result in 0.75 units of functional loss. Mitigation for the
impact is being provided by Mitigation Areas M-10 and M-11 which are being addressed as a
part of the Bexley Ranch Parcel 4, Phase 1 ERP. Copies of the UMAM datasheets are included
at the end of this report.
Public Interest
The project meets the public interest criteria as indicated in the Applicant’s Handbook. The
project will not “significantly degrade” any Outstanding Florida Waters, therefore; the public
interest standard is to demonstrate that the project is not “contrary to the public interest”. Below
we address each of the 7 public interest criteria.
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a) Whether the regulated activity will adversely affect the public health, safety, or welfare or the
property of others.
The regulated activity will not adversely affect the public health, safety or welfare, or the
property of others. The project will not result in any environmental hazards to public health.
The stormwater management system will prevent the project from causing any negative
impact to offsite water quality or quantity. Traffic safety has been considered and the
proposed plan is in compliance with the Pasco County regional transportation plan.
b) Whether the regulated activity will adversely affect the conservation of fish and wildlife,
including endangered or threatened species, or their habitats.
The project will not adversely affect fish and wildlife or their habitats because the habitat that
will be impacted is not unique and will be offset by the functional gain provided as a result of
the mitigation. The enclosed UMAM analysis (Exhibit 1) indicates that the proposed
mitigation is adequate to offset the loss in fish and wildlife habitat value resulting from
construction of the project.
c) Whether the regulated activity will adversely affect the navigation or the flow of water or
cause harmful erosion or shoaling.
The project will not negatively affect navigation or water flows and will not result in erosion
or shoaling as there are no navigable waters within the project limits and the stormwater
management plan meets all required criteria.
d) Whether the regulated activity will adversely affect the fishing or recreational values or
marine productivity in the vicinity of the activity.
The project will not affect any marine habitats as there are no marine habitats on-site or near
the site. All offsite flows will first be treated in the stormwater management system.
e) Whether the regulated activity will be of a temporary or permanent nature.
All permanent project impacts will be mitigated.
f) Whether the regulated activity will adversely affect or will enhance significant historical and
archaeological resources under the provisions of Section 267.061, F.S.
An archaeological survey report and letter from the State Historic Preservation Officer
documenting that project will have no effect on historical or archaeological resources is
included with this submittal.
g) The current condition and relative value of functions being performed by areas affected by
the proposed regulated activity.
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The current condition of all on-site habitats is degraded as a result of agricultural uses. Any
impacts to areas providing wildlife habitat value are being appropriately mitigated.
Listed Species
Due to the heavy agricultural use of the site and past land management practices, little native
upland habitat remains. As such, listed species use is documented to be very limited on the
property.
Preliminary wildlife surveys to evaluate and determine the likely occurrence and relative
abundance of species considered Endangered, Threatened, or of Special Concern by the Florida
Fish and Wildlife Conservation Commission (FWC) under Chapter 68A-27.003 & .005, F.A.C.,
or considered Endangered or Threatened by the US Fish and Wildlife Service (USFWS) under
50 CFR 17 were completed in June 2013 and March 2014. During the site surveys, all on-site
habitats in the project area were canvassed for listed and wetland dependent species, with
emphasis given to physical features that may indicate the presence of these species such as
tracks, scat, nests, burrows and cavity trees. As a part of this review, a gopher tortoise
(Gopherus polyphemus) survey was also performed. Observed listed and wetland dependent
species on the property during these surveys consisted of sandhill crane (Grus canadensis
pratensis) and Sherman’s fox squirrel (Sciurus niger shermani). There were no observed nests
for either of these species found on the project site. There were also no observed tortoise
burrows on the property.
A follow-up detailed wildlife study of the project site conducted in general accordance with the
Florida Wildlife Conservation Guide (published online by the FWC) was completed between
May and July 2014. This formal wildlife survey was completed to address FWC comments
received as a part of Pasco County’s Bexley South MPUD review, which includes the Bexley
Ranch Parcel 4, Phase 1 project area, Observed listed and wetland dependent wildlife were the
above mentioned species and wading birds including the little blue heron (Egretta caerulea),
snowy egret (Egretta thula), tricolored heron (Egretta tricolor), white ibis (Eudocimus albus),
and wood stork (Mycteria americana), all of which were only observed foraging on the property.
No other listed species, including the gopher tortoise, were observed on the property. Therefore,
the project will not adversely affect nesting or denning of any listed or wetland dependent
species.
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Table 1. Tower Road Wetland Summary Table
Wetland ID
Wetland Type
Acres
WCA 17-1A
Wetland
0.57
WCA 17-23
Wetland
0.43
WCA 19-1
Wetland
3.03
WCA 19-5
Wetland
0.19
WCA 20-5
Wetland
0.38
DITCH-C7
OSW
0.08
DITCH-J7
OSW
0.06
SW-D2
OSW
0.07
Wetland Total
4.61
OSW Total
0.22
Table 2. Tower Road Wetland Impact Summary Table
Wetland ID
Wetland Type
Acres
17-1A
Wetland
0.57
17-23
Wetland
0.43
19-5
Wetland
0.19
20-5
Wetland
0.38
S-17-J7
OSW
0.06
SW-D2
OSW
0.07
Wetland Total
1.57
OSW Total
0.13
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Table 1: Project Wetland and Other Surface Water Summary
Wetland/
SW ID
Type
Size
Portion Not
Impacted
Temporary Impacts
Permanent Impacts
Mitigation Area ID
Type
Size
Impact Type
Type
Size
Impact Type
17-1A
641
0.57
0.00
0.00
0.57
Fill
M-10, M-11
17-23
641
0.43
0.00
0.00
0.43
Fill
M-10, M-11
19-1
641
3.03
3.03
0.00
0.00
19-5
641
0.19
0.00
0.00
0.19
Fill
NA
20-5
641
0.38
0.00
0.00
0.38
Fill
M-10, M-11
S-17-J7
510
0.06
0.00
0.00
0.06
Fill
NA
SW-D2
510
0.07
0.00
0.00
0.07
Fill
NA
4.73
3.03
0.00
1.70
Total:
Comments:
Notes:
WL=Wetland; SW=Surface Water; ID=Identification number, letter, etc.
Wetland type: from an established wetland classification system
Impact Type: D=Dredge; F=Fill; H=change hydrology; S=shading, C=Clearing; O=other
Table 2: Project On-Site Mitigation Summary
Mitigation
Area ID
Creation
Area
Target type
M-10
31.15
FLUCFCS 641
M-11
0.66
FLUCFCS 641
Total
31.81
Restoration
Area
Target type
Note: Refer to Bexley Ranch Parcel 4, Phase 1 for mitigation plan details.
Enhancement
Area
Target type
Wetland Preserve
Upland Preserve
Area
Area
Target type
Target type
Other
Area
Target type
PART I - Qualitative Description
(See Section 62-345.400, F.A.C.
Site/Project Name:
Application Number:
Bexley Ranch
FLUCCs Code:
Assessment Area Name or Number:
43013740.004
Further Classification:
Anclote River
Impact or Mitigation Site?
W
641
Basin/Watershed Name/Number:
17-1
Affected Waterbody (Class):
Assessment Area Size (ac):
Impact
Special Classificatio
0.57
(i.e. OFW, AP, other local/state/federal designation of importance)
Class III
Geographic relationship to and hydrologic connection with wetlands, other surface water, uplands
Associated with larger system to the west.
Assessment Area Description:
Herbaceous marsh
Significant Nearby Features:
none
Functions:
stormwater storage and water movement; wildlife habitat
Anticipated Wildlife Utilization Based on Literature Review (List of
species that are representative of the assessment area and
reasonably expected to be found)
medium and small mammals, wading birds, songbirds, raptors,
ducks, amphibians, reptiles, fish
Uniqueness (considering the relative rarity in relation to the regional
landscape.)
None
Mitigation for previous permit/other historic use:
No
Anticipated Utilization by Listed Species (List species, their legal
classification (E, T, SSC), type of use, and intensity of use of the
assessment area):
listed wading birds (SSC), wood stork (T)
Observed Evidence of Wildlife Utilization (List species directly observed, or other signs such as tracks, droppings, casings, nests, etc.)
deer, owl, pig, wading birds
Additional relevant factors:
None
Assessment conducted by:
DES
Form 62-345.900(1), F.A.C.
Assessment date(s):
10-Feb-2015
Bexley Permitting\tower road\Revised_11-12-07_UMAM_BexleyRanch_WMD.mdb
PART II - Quantification of Assessment Area (impact or mitigation)
(See Sections 62-345.500 and .600, F.A.C.)
Site/Project Name
Application Number
Bexley Ranch
Assessment Area Name or Number
43013740.004
Impact or Mitigation
17-1
Assessment Date:
Impact
Scoring Guidance
Optimal (10)
The scoring of each indicator is
based on what would be suitable
for the type if wetland or surface
water assessed
.500(7)(a) Location
and Landscape
Support
w/o pres or
current
Moderate (7)
Minimal (4)
Not Present (0)
Condition is optimal and fully Condition is less than optimal,
Minimal level of support of
Condition is insufficient to
but sufficient to maintain most wetland/surface water functions provide wetland/surface water
supports wetland/surface
wetland/surface water functions
water functions
functions
Habitat availability outside AA optimal for most but not all species of wildlife in Pt. I. Habitat availability outside AA optimal for
most but not all species of wildlife in Pt. I. Wildlife access to/from AA is partially limited by distance or barriers. Area Land Uses
have significant adverse impacts on wildlife. Hydrologic/flow impediments limit AA from providing benefits downstream, such
benefits provided with lesser frequency or magnitude compared to optimal conditions. Discharges from AA provide minimal
benefits to downstream areas, which could be altered if quality/quantity were altered.
with
6
0
.500(7)(b) Water
Environment (n/a
for uplands)
w/o pres or
current
Water levels and flow slightly higher/lower than appropriate considering natural variation. Water level indicators not as distinct and
consistent w/expected hydrologic conditions for TOS. Vegetation shows some signs of hydrologic stress. Plant community
composition is characterized by some species tolerant of and associated with water quality degradation/alterations in
inundation/saturation (freq, depth, duration).
with
7
0
Majority of plant covers is desirable plant species (invasive/exotic) in all strata . Minimal evidence of regeneration/recruitment.
Land Management Practices resulted in partial removal/alteration of natural structures, add some artificial features. UMAA - plant
community provide moderate level of habitat and life history support for fish & wildlife. Minimal cover by invasive/exotic plant
species . Age/size distribution atypical, show permanent deviations. Much lower/higher quantity of good structure habitat (see
rule for details) Slightly lower/higher quantity of good structural habitat (see rule for details). Reduction in extent of topo features.
.500(7)(c)
Community
Structure
w/o pres or
current
5
with
0
Score = sum of above scores/30
(if uplands, divide by 20)
0.6000
0.0000
If preservation as mitigation,
For impact assessment areas
Preservation adjustment factor =
N/A
Area Size (ac) =
Adjusted mitigation delta =
N/A
FL= delta x acres =
If mitigation
Delta = [with-current]:
-0.6000
Form 62-345.900(2), F.A.C.
0.57
-0.34 *
For mitigation assessment areas
Time lag (t-factor) =
N/A
Risk factor =
N/A
RFG = delta/(t-factor x risk) =
N/A
* FL is rounded to 2 decimal places. Intermediate calculations
are not rounded, but are displayed to 4 decimal places.
ey Permitting\tower road\Revised_11-12-07_UMAM_BexleyRanch_WMD.mdb
Site/Project Name:
Application Number:
Bexley Ranch
FLUCCs Code:
43013740.004
17-23
641
Anclote River
F
Impact
0.43
Class III
Wetland surrounded by pasture and connected to other wetland be a agriculture ditches.
Herbaceous marsh
none
Functions:
landscape.)
None
No
assessment area):
None
DES
Form 62-345.900(1), F.A.C.
Assessment date(s):
10-Feb-2015
Site/Project Name
Application Number
Bexley Ranch
43013740.004
17-23
Assessment Date:
Impact
Scoring Guidance
Optimal (10)
water assessed
.500(7)(a) Location
and Landscape
Support
w/o pres or
current
Moderate (7)
Minimal (4)
Not Present (0)
water functions
functions
UMAA - provide minimal protection of wetland functions. Habitat availability outside AA is fair, fails to provide support some
species of wildlife or provides minimal support fro many species in Pt. I. Area Land Uses have significant adverse impacts on
wildlife. Discharges from AA provide minimal benefits to downstream areas, which could be altered if quality/quantity were
altered. Cover of invasive/exotic spp. is minimal, minimal adverse effect on functions of AA. Wildlife access to/from AA is partially
limited by distance or barriers.
with
4
0
.500(7)(b) Water
Environment (n/a
for uplands)
w/o pres or
current
Water levels and flow moderately higher/lower than appropriate considering natural variation. Vegetation shows strong signs of
hydrologic stress. Water levels and flow slightly higher/lower than appropriate considering natural variation. Water level indicators
not as distinct and consistent w/expected hydrologic conditions for TOS.
with
4
0
Majority of plant covers is desirable plant species (invasive/exotic) in all strata . Minimal evidence of regeneration/recruitment.
Land Management Practices resulted in partial removal/alteration of natural structures, add some artificial features. UMAA - plant
community provide moderate level of habitat and life history support for fish & wildlife. Minimal cover by invasive/exotic plant
species .
.500(7)(c)
Community
Structure
w/o pres or
current
6
with
0
0.4667
0.0000
N/A
Area Size (ac) =
N/A
FL= delta x acres =
If mitigation
-0.4667
Form 62-345.900(2), F.A.C.
0.43
-0.20 *
N/A
Risk factor =
N/A
N/A
Site/Project Name:
Application Number:
Bexley Ranch
FLUCCs Code:
43013740.004
Anclote River
C
641
20-05
Impact
0.38
Class III
Connected to adjacent wetlands via agriculture ditch.
Cypress dome
none
Functions:
landscape.)
None
No
assessment area):
none
None
DES
Form 62-345.900(1), F.A.C.
Assessment date(s):
10-Feb-2015
Site/Project Name
Application Number
Bexley Ranch
43013740.004
20-05
Assessment Date:
Impact
Scoring Guidance
Optimal (10)
water assessed
.500(7)(a) Location
and Landscape
Support
w/o pres or
current
Moderate (7)
Minimal (4)
Not Present (0)
water functions
functions
UMAA - provide minimal protection of wetland functions. Habitat availability outside AA is fair, fails to provide support some
species of wildlife or provides minimal support fro many species in Pt. I. Area Land Uses have significant adverse impacts on
wildlife. Discharges from AA provide minimal benefits to downstream areas, which could be altered if quality/quantity were
altered. Cover of invasive/exotic spp. is minimal, minimal adverse effect on functions of AA. Wildlife access to/from AA is partially
limited by distance or barriers.
with
5
0
.500(7)(b) Water
Environment (n/a
for uplands)
w/o pres or
current
Wetland appears to have a good hydroperiod. Water levels and flow moderately higher/lower than appropriate considering natural
variation. Vegetation shows strong signs of hydrologic stress. Water levels and flow slightly higher/lower than appropriate
considering natural variation. Water level indicators not as distinct and consistent w/expected hydrologic conditions for TOS.
with
6
0
Many invasive species. Age/size distribution atypical, show permanent deviations. Much lower/higher quantity of good structure
habitat (see rule for details) Land Management Practices resulted in partial removal/alteration of natural structures, add some
artificial features. UMAA - plant community provide moderate level of habitat and life history support for fish & wildlife.
.500(7)(c)
Community
Structure
w/o pres or
current
5
with
0
0.5333
0.0000
N/A
Area Size (ac) =
N/A
FL= delta x acres =
If mitigation
-0.5333
Form 62-345.900(2), F.A.C.
0.38
-0.20 *
N/A
Risk factor =
N/A
N/A
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1 bexley ranch tower road – bexley village drive to ballantrae

Transcription

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