Agenda 09/23/2008 Item #10FItem # 1 OF
September 23, 2008
Page 1 of 43
EXECUTIVE SUMMARY
Recommendation to adopt a superseding resolution authorizing the acquisition by
condemnation, if necessary, of fee simple and easement interests in certain tracts of land in
Golden Gate Estates necessary for the construction of boat ramps and stormwater retention
and treatment ponds required for the expansion of Golden Gate Boulevard from west of
Wilson Boulevard to DeSoto Boulevard. (Project No. 60040) Estimated fiscal impact:
$2,941,632.00
OBJECTIVE: To adopt a superseding resolution authorizing the acquisition by condemnation, if
necessary, of fee simple and easement interests in certain tracts of land in Golden Gate Estates
necessary for the construction of boat ramps and stormwater retention and treatment ponds required
for the expansion of Golden Gate Boulevard from west of Wilson Boulevard to DeSoto Boulevard.
CONSIDERATIONS: On July 24, 2007, the Board of County Commissioners of Collier County,
Florida, adopted Resolution No. 2007 -214, finding public purpose and necessity and authorizing the
condemnation of the fee simple interest in certain tracts of land in Golden Gate Estates necessary for
the construction of stormwater retention and treatment ponds required for this project. Since then,
two pond sites (Parcels PSP2E1 and PSP2E2) have been replaced by two new ponds, namely
Parcels 292FEE and 294FEE, and the parcel numbers of the remaining pond sites have changed. In
addition, the County has been advised by the South Florida Water Management District (SFWMD)
that, as a condition for the issuance of an Environmental Resource Permit, which must be secured
prior to construction of this project, boat ramps at all bridge crossings must be provided to facilitate
maintenance of the water courses and water control structure as contemplated by the Cooperative
Agreement between South Florida Water Management District on behalf of the Big Cypress Basin
and Collier County, dated February 19, 1991, as amended. The project's engineers have identified
vacant properties (new Parcels 188RDUE, 30ORDUE and 464RDUE) located at the intersection of
Golden Gate Boulevard and all major canal bridge crossings, and have designed boat ramp facilities
on each of these properties to accommodate Big Cypress Basin's maintenance responsibilities under
the above - mentioned Cooperative Agreement. These boat ramps will also benefit the County
should Big Cypress Basin transfer such maintenance obligation back to Collier County.
The purpose of this superseding condemnation resolution is to correctly reflect the property required
for the construction of foresaid boat ramps and stormwater retention and treatment ponds in
conformity with the most recent project requirements. These changes may be reflected through the
adoption of a superseding condemnation resolution without effect to the weight or relevance of the
Board's prior decisions. The validity of the facts, findings and conclusions presented in the Pond
Siting Report prepared for Collier County by Gulfshore Engineering and Stanley Consultants
remains unchanged. A copy of the text of this report is attached. By its review, concurrence and
approval of this executive summary, the back -up documentation, and the proposed resolution, the
Board will have determined that the legal descriptions, and the interest in real property specified on
each legal description, which are a part of the attached Resolution, represent the most feasible
location, and are necessary for the construction and permitting of the proposed expansion of Golden
Gate Boulevard. The location of stormwater treatment ponds has been determined based on
Item # 1 OF
September 23, 2008
Page 2 of 43
hydraulic and operational characteristics, maintenance considerations and minimization of wetland
impacts.
The Board of County Commissioners has been further advised that it is necessary and in the public's
best interest to acquire, by condemnation if necessary, those interests in real property specified on
each legal description attached to the Resolution.
FISCAL IMPACT: It is estimated that the total cost of all right -of -way which must be purchased
will be $2,941,632.00. This amount includes the cost of all land required for construction of the
proposed boat ramps and pond sites, as well as all expenses for title work, real estate appraisals, and
those expenses, such as property owner attorney fees and expert witness fees, which the County is
required to pay according to Sections 73.091 and 73.092, F.S. All such payments will come from
the Transportation Supported Gas Tax fund and the Road Impact Fee funds. Source of funds are gas
tax and road impact fees.
GROWTH MANAGEMENT IMPACT: As part of the County's proposed 5 year work program,
the expansion of Golden Gate Boulevard (Project No. 60040) is an integral part of Collier County's
Growth Management Plan.
LEGAL CONSIDERATIONS: This item has been approved by the County Attorney's Office and
is legally sufficient for Board action. —SRT.
RECOMMENDATION: That the Board of County Commissioners of Collier County:
Adopt the attached Resolution;
Authorize its Chairman to execute same on behalf of the Board; and
Authorize any budget amendments that may be necessary to implement the collective will of the
Board as evidenced by the adoption of the attached Resolution and the approval of this
Executive Summary.
Prepared by: Robert Bosch, Right -of -Way Coordinator - TECM
Attachments: (1) Condemnation Resolution; (2) Pond Siting Report
RESOLUTION NO. 2005-
A RESOLUTION AUTHORIZING THE ACQUISITION BY CONDEMNATION, IF
NECESSARY, OF FEE SIMPLE AND EASEMENT INTERESTS IN CERTAIN
TRACTS OF LAND IN GOLDEN GATE ESTATES NECESSARY FOR THE
CONSTRUCTION OF BOAT RAMPS AND STORMWATER RETENTION AND
TREATMENT PONDS REQUIRED FOR THE EXPANSION OF GOLDEN GATE
BOULEVARD FROM WEST OF WILSON BOULEVARD TO DESOTO
BOULEVARD. (PROJECT NO. 60040.)
Item # 1 O
WHEREAS, the Board of County Commissioners (Board), on June 7, 2005, adopt6bptember 23, 2008
Page 3 of 43
Ordinance No. 2005 -25 therein establishing the Capital Improvement Element of the Growth
Management Plan in order to establish priorities for the design, acquisition and construction of
the various capital improvement projects; and
WHEREAS, the Capital Improvement Element of the Growth Management Plan is
amended annually to identify public facilities required during the next five years; and
WHEREAS, the Transportation Element of the County's Comprehensive Plan was
adopted in Ordinance No. 2005 -25, as amended most recently in Ordinance No. 2007 -80; and
WHEREAS, the expansion of Golden Gate Boulevard from west of Wilson Boulevard to
Desoto Boulevard (Project No. 60040) (hereinafter referred to as "the Project "), is one of the
capital improvement projects required under the Transportation Element of the County's
Comprehensive Plan; and
WHEREAS, on July 24, 2007 the Board adopted Resolution No. 2007 -214, authorizing
the condemnation of the fee simple interest in certain tracts of land necessary for the construction
of stortnwater retention and treatment ponds required for construction of the Project; and
WHEREAS, two pond sites (Parcels PSP2EI and PSP2E2) have been replaced by two
new pond sites, namely Parcels 292FEE and 294FEE, and the parcel numbers of the remaining
pond sites have changed; and
WHEREAS, County must secure an Environmental Resource Permit (ERP) from the
South Florida Water Management District (SFWMD) prior to commencing construction on the
Golden Gate Boulevard widening project; and
WHEREAS, County has been advised by SFWMD that, as a condition for the issuance of
the ERP, boat ramps at all bridge crossings must be provided to facilitate maintenance of the
water courses and water control structures as contemplated by the Cooperative Agreement
between South Florida Water Management District on Behalf of the Big Cypress Basin and
Collier County, dated February 19, 1991, as amended; and
WHEREAS, the Project's engineers have identified vacant properties located at the
intersection of Golden Gate Boulevard and all major canal bridge crossings, and have designed
boat ramp facilities on each of these properties to accommodate Big Cypress Basin's
maintenance responsibilities under the Cooperative Agreement (above); and
Item # 10F
WHEREAS, meeting all permitting conditions qualifies as a County purpose; and September 23, 2008
Page 4 of 43
WHEREAS, the location for the construction of the proposed improvements has been
fixed by survey and is collectively represented by the boat ramp site legal descriptions,
comprising Exhibit "A ", and the stormwater retention and treatment pond site legal descriptions,
comprising Exhibit "B ", attached hereto and incorporated herein; and
WHEREAS, after consideration of the availability of alternate routes and locations, the
comparative costs of the project alternatives, various impacts upon the environment, long range
planning options, and public safety considerations, the Board desires to exercise its right to
condemn property for public purposes.
NOW, THEREFORE, BE IT RESOLVED BY THE BOARD OF COUNTY
COMMISSIONERS OF COLLIER COUNTY, FLORIDA, that it has been determined by the
Board that the expansion of Golden Gate Boulevard from west of Wilson Boulevard to DeSoto
Boulevard, Project No. 60040, is necessary and in the public's best interest in order to protect the
health, safety and welfare of the citizens of Collier County.
AND IT IS FURTHER RESOLVED that construction of the Project is an integral part of
the County's long range planning effort, and is included in the Transportation Element of the
County's Comprehensive Plan for Growth Management, as approved by the Florida Department
of Community Affairs.
AND IT IS FURTHER RESOLVED that the County Staff has reviewed alternative
locations for the Project, and the costs associated with the design, property rights acquisition, and
construction of the project, as well as public safety and welfare considerations associated with
the design and construction of the Project, and various impacts to the environment, and long
range planning, and the Board finds that after consideration of these issues, the most feasible
locations for construction of the proposed improvements is collectively represented by the legal
descriptions comprising Exhibits "A" ari attached hereto and incorporated herein.
Page 2-
AND IT IS FURTHER RESOLVED that in order to construct the Project as designed, it
is necessary for the Board to acquire in fee simple the boat ramp sites described in Exhibit "A"
and the storrnwater retention and treatment pond sites described in Exhibit "B ".
AND IT IS FURTHER RESOLVED that all property acquired pursuant to this
Resolution shall be put to public purposes.
AND IT IS FURTHER RESOLVED that the County staff is hereby authorized to
Item # 10F
immediately acquire by gift, purchase or condemnation in accordance with the provisions 36ptember 23, 2008
Page 5 of 43
Chapters 73, 74 and 127, Florida Statutes, the above referenced neat property interests more
particularly described in Exhibits "A" and "B ", attached hereto and incorporated herein.
AND IT IS FURTHER RESOLVED that no mobile homes are located on the property
sought to be acquired and therefore it will not be necessary to remove any mobile homes from
the property to be acquired.
This Resolution, adopted on this day of , 2008, after motion,
second and majority vote, supersedes and replaces Resolution No. 2007-214.
ATTEST: BOARD OF COUNTY COMMISSIONERS
DWIGHT E. BROCK, CLERK OF COLLIER COUNTY, FLORIDA
Approved as to form and
legal sufficiency:
Assistant County Attorney
M
TOM HENNING. CHAIRMAN
-Page 3-
GOLDEN GATE BOULEVARD (CR 876)
60+00 F1 +00
PROPOSED ROADWAY EASEMENT —
PARCEL 18B ROUE
57,441 S¢ R.
WEST LINE OF
TRACT 166
'IJNE
BEARING
LENGTH
L1
G �
FS
TRACT 155
L2
TO
N >m m
330.32"
L3
0
215. DO'
L4
IA Y
225.02"
LS
�Y
y, N
115.00
L5
N45'29'2Y'W
21.21
L7
589'30'41 "W
N
LB
N00'30'08"W
85.00
It�m # 10F
S ptember 23,
Page 6 of 43
EAST LNE OF—
TRACT 16fi
BABY BROTHERS CORP j
OR 1476/38 TRACT 18
0"
_ EXISTING
DRAINAGE
TRACT 166
EASEMENT
GOLDEN GATE ESTATES
UNIT 13
PLAT BOOK 7 PAGE 72
W +L EXHIBIT
s � of 2
OR OFFICIAL RECORDS (BOOK/ ?AGE)
® PROPOSED ROADWAY, DRA'. PAGE AND JTILITY EASEMENT (ROUE)
ITl-1 EXISTNG ROADWAY /DRAINAGE EASLAENT DE9ZATED TO THE
PERPETUAL USE OF THE PUB :.IC PER PLAT BOOK 7, PAGE
72
LINE TABLE
'IJNE
BEARING
LENGTH
L1
500'3008 "E
50.00
L2
N894N'41 "E
330.32"
L3
SOD'29'50 "E
215. DO'
L4
S89'30'41 "W
225.02"
LS
N00'29'1 9 "W
115.00
L5
N45'29'2Y'W
21.21
L7
589'30'41 "W
90.31
LB
N00'30'08"W
85.00
LEGAL DESCRIPTION FOR PARCEL 188 RDUE
A PORTION OF TRACT 166, GOLDEN GATE ESTATES, UNIT 13 AS RECORDED IN PLAT BOOK 7, PAGE 72 OF THE
PUBLIC RECORDS OF COWER COUNL. FLORIDA, LYING IN SECTIONS 2 AND 3, TOWNSHIP 49 SOJTH, RANGE 27 EAST,
COLLIER COUNTY, FLORIDA, BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS.
COMMENCING AT THE NORTHWEST CORNER OF SAID TRACT 166;
THENCE 5.00'30'08 "E. ALONG -HE WST LINE OF SAID TRACT 166, FOR 50.00 FEET TO A POINT ON THE SOUTH LINE
OF -HE NORTH 50 FEET OF SAID TRACT 166 AND THE POINT OF BEGINNING OF THE HEREIN DESCRIBED PARCEL;
THENCE N89 30'41"E, ALONG SAD SOUTH LINE, -OR 33032 CET TO A '014T 0'v THE EAST LINE OF SAID TRACT
166;
THENCE S.00'29'50 °E. ALONG SAID EAST ,.INE. FOR 21690 FEET;
THENCE 589'30'41 "W., FOR 225.02 FEET;
THENCE N.DO'29'19 "W., FOR 11500 FEET:
THENCE NAS'29'23 "W., FOR 2121 FE_;
THENCE S.89'30'41"W., TOR 90.31 RE TO A POINT ON THE WEST
IINE -F SAID TRACT 156;
'HENCE N00'30'O8 "W.. ALONG SAID WESI LINE FOR 85.00 TO THE
POINT OF BEGINNIN HEREIN DESCRIBED PARCEL.
COY:'IN' I:'G .`7,4417,441 SQUARE FTE, MORE G LFSS.
"
0 40 00
180 pY
SKETCH & DESCRIPTION ONLY
ulc•uu -e wuroyr�. uwky�GsexvtSPO uwrm
NOT A BOUNDARY SURVEY sc.a.e: 1' -so'
ROMW NECI81Wj N[ DO N0. 5:101
Si0np14 e J D
FOR: COLLIER COUNTY GOVERNMENT BOARD OF COUNTY COMMISSIONERS
NOT I" WIMOW THE SWI • xvsm [umssm sWE OF
A ROPIM SN ISIEXm ESSIESMI SDS VS)q A4p µWpFA.
GOLDEN GATE BOULEVARD
SKETCH & DESCRIPTION OF: PROPOSED ROADWAY EASEMENT i �sF /ERG 0,k
PARCEL 180 SIDLE a;mw Te T om so usoe
COLLIER COUNTY, FLORIDA NN,m.. Floras Solos
FTOne: (Pd9) 5W 0575 FM (299) 59Y09tl
L9rvo; 8954
JOB NUMBER REVISION SECTION 10W'NSHIP RANGE SCALE DATE DRAWN BT FILE NAME SHEET
9002179000 000 2 & 3 49 2T = 80' F-?_, 7 -(]Y i. N. JN13 SKIES 1 OF 1
I
rz
N
z
N
TRACT 102
GOLDEN GATE BOULEVARD (CR 876)
FAST LINE OF
WEST 30' OF
i V`cT 130
'PROPOSED ROADWAY EASEMENT) NORTH 350' OF
PARCEL 300 ROUE TRACT 130
55.390 SO. R.
TEAM INVESTMENTS INC
OR 2449/916
TRACT 130
GOLDEN GATE ESTATES- -
UNIT 51
PLAT BOOK 5 PAGE 84
BEAUPLAN
OR 4056/2628
N
w EXHIBIT
Page= of 3
S
OR OFFICIAL RECORDS (BOOK /PAGE)
m PROPOSED ROADWAY, DRAINAGE AND UTILITY EASEMENT (RDUE)
1
U W
z�
� � Q
x�
I wo
Mier 23,
7 of 43
TRACT 131-
1
LINE TABLE
LINE
BEARING
LENGTH
u
S00'28'52 "E
50.00'
L2
S00'28 '52 "E
15.00'
L3
S89'32'1 5"W
200.00'
L4
N00'27'45 "W
110.00'
L5
N4; 2T45"'W
28.28'
L6
S89'32'1 5"W
135.25'
L7
N00'28'56"W
85.00'
L9
N89'32'1 5"E
_
355.21'
V��EXISTING ROADWAY EASEMENT, DRAINAGE EASEMENT DEDICATED TO THE
IG1 PERPETUAL USE OF THE PUBLIC PER PLAT BOOK 5, PAGE 84
LEGAL DESCRIPTION FOR PARCEL 300 ROLE
A PORTION OF TRACT 130, GOLDEN GATE ESTATES, UNIT 51 AS RECORDED IN PLAT BOOK 5, PACE 84 OF THE
PUBLIC RECORDS OF COLLIER COUNTY, FLORIDA LYING IN SECTION 1, TOWNSHIP 49 SOUTH, RANGE 27 ;AST, COLLIER
COUNTY, FLORIDA, BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS.
COMMENCING AT THE NORTHEAST CORNER OF SAID TRACT 130,
THENCE S.00'2B'52 °E., ALONG THE EAST LINE OF SAID TRACT 130 FOR 50.00 FEET TO A POINT ON THE SOUTH LINE
OF THE NORTH 50 FEET OF SAID TRACT 130 AND THE POINT OF BEGINNING OF THE HEREIN DESCRIBED PARCEL;
THENCE CONTINUE 5.00'28'52 "E. ALONG SAID EAST LINE, FOR 215.00 FEET;
THENCE 5.59'32'15 "W., FOR 200.00 FEET;
THENCE N.00'27'45 "W., FOR 110.00 FEET;
THENCE N45'27'45 "W., FOR 28.28 FEET;
THENCE S.89'32'15'VJ., FOR 135.25 FEET TO THE EAST LINE OF THE WEST 30 FEET OF SAID TRACT 130;
THENCE N.00'28'56 °W., ALONG SAID EAST LINE, FOR 85.00 FEET TO A POINT ON THE SOUTH LINE OF THE NORTH 50
FEET OF SAID TRACT 130;
THENCE N'.59'32'15 "E., ALONG SAID SOUTH LINE, FOR 355.21 FEET TO THE POINT OF BEGINNING OF THE HEREIN
DESCRIBED PARCEL.
CONTAINING 56,390 SQUARE FEET. MORE OR LESS
o 40 W ap
SKETCH & DESCRIPTION ONLY
NOT A BOUNDARY SURVEY acuz: Y -ep•
FOR: COWER COUNTY GOVERNMENT BOARD OF COUNTY COMMISSIONERS
GOLDEN GATE BOULEVARD
SKETCH & DESCRIPTION OF: PROPOSED ROADWAY EASEMENT
PARCEL 300 RDUE
COLLIER COUNTY, FLORIDA
6610 Mllow Pelh Dive, S90e 200
Nad".i elua. I.
Pho"og25W SW 0575 R (2M) M7> 570
LBNe 6952
SFK OF
7, GOOD 0007( 1 17, GOOD 0007( 1 49127 1 .1" = 80' I FEB. 20061 S.D.L. I UN51 SK300 I 1 OF 1
HE
TRACT 99
i
GOLDEN GATE BOULEVARD (CR B76)
181400 1 2,
,�.'.N 89'30'53" E 375.01'/
WEST LINE OF
TRACT 100
S 89'30'53" W 230.00'
-- 70'-- --75 —I TRACT 100
GOLDEN GATE ESTATES
UNIT 80
145' WIDE PLAT BOOK 5 PAGE 18
-- DRAINAGE
EASEMENT - VO
OR 2811/1725
LINE TABLE
LIKE
9KL fCH &DESCRIPTION OF; PROPOSED ROADWAY EASEMENT
LENGTH
Li
S
5 00'2x'20" E
1 50.00'
L2
S 00'29'20" E
1 7x 00'
L3
S 89'30'53° W
1 125.00'
L4
S 44-30-53-_W__L
2828'
L5
S 0929'n7' E
I 120.00'
PROPOSED ROADWAY, ORAINAGE AND UTILITY EASEMENT (ROUE)
EXISTING ROADWAY EASEMENT DEDICATED TO THE PERPETUAL
USE OF THE PUBLIC PER PLAT BOOK 5, PAGE 18
OR OFFICIAL RECORDS (BOOK /PAGE)
ROADWAY EASEMENrtem # 1 OF
DEL 60526 M, ROUE September 23,
1 Page 8 of 43
EAST LINE OF
TRACT 100
TRACT 117
N
W + E
S
EXHIBIT
Page 3 of 3
LEGAL DESCRIPTION FOR PARCEL 464 ROUE
A PORTION OF TRACT '100, GOLDEN GATE ESTATES, UNIT 80 AS RECORDED IN PLAT BOOK 5, PAGE 18 OF THE
PUBLIC RECORDS OF COLUER COUNTY, FLORIDA SITUATED IN SECTION 5, TOWNSHIP 49 SOUTH, RANGE 28 EAST,
COLLIER COUNTY. FLORIDA, BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS.
COMMENCING AT THE NORTHEAST CORNER OF TRACT 100;
THENCE 5.00'29'2CI ALONG THE CAST LINE OF SAID TRACT 100, FOR 50.00 FEET TO A POINT ON THE SOUTH LINE
OF TI IC NORTH 50 FEET OF SAID TRACT IDO AND THE POINT OF BEGINNING OF THE HEREIN DESCRIBED PARCEL;
THENCE CONTINUE 500'29'20 "E. ALONG SAID EAST LINE, FDR 75. 00 FEET;
THENCE S.89'30'53' W. FOR 125.00 FEET;
THENCE S.44'30 '53 "W., FOR 28.28 FEET;
THENCE S.0629'07'E., FOR 120.00 FEET;
THENCE 5.89'30'53 "W., FOR 23U.00 FEET TO A POINT ON THE WEST UNE SAID TRACT 100;
THENCE 14.00 "29'22 "W., ALONG SAID WEST LINE, FOR 215.00 FEET TO A POINT ON SAID SOUTH 'LINE;
THENCE WEE 30'53"E, ALONG SAID SOUTH LINE, FOR 375.01 FEET TO IHE POINT OF BEGINNING OF THE HEREIN
DESCRIBED PARCEL.
CONTAINING 6D,526 SQUARE FEET,
MORE OR LESS,
9KL fCH &DESCRIPTION OF; PROPOSED ROADWAY EASEMENT
Vp Dam
coN5llL1 G 641Eiltivmmi
PARCEL 464 RDUE
T Wl � sw'"T°1+ &'M"ft
i
6610 WJlow Peh [Mvo.5J1�200
COLLLER COUN'17, FLORIDA
a 40 60
100 xr;
%wn:(CI9 "+tl]i... F0.1:(Zi0)'vtlA05]G
LN No.:6652
SKETCH & DESCRIPTION ONLY
REVISION
cxrei s x:.ro, mws
1 suxvf.ux s Nrovrn
NOT A BOUNDARY SURVEY
scu.e. 1' -eo'
avnsu s_cltilwiax y?
scows mr l
yea. tmv
� D
FOR: COLDER COUNTY GOVERNMENT BOARD
OF COUNTY COMMISSIONERS
"cT vrio wm+cur rxc oxI4IrvN. slue
♦ n0rzav mcrosna wwrtssaxu sumxv
wne'NeOSSeo sw. or
GOLDEN GATE BOULEVARD
�T�TA
9KL fCH &DESCRIPTION OF; PROPOSED ROADWAY EASEMENT
Vp Dam
coN5llL1 G 641Eiltivmmi
PARCEL 464 RDUE
T Wl � sw'"T°1+ &'M"ft
6610 WJlow Peh [Mvo.5J1�200
COLLLER COUN'17, FLORIDA
".7I0^O'N°°I
%wn:(CI9 "+tl]i... F0.1:(Zi0)'vtlA05]G
LN No.:6652
JOB NUMBER
REVISION
SECDON
TOWNSHIP
RANGE
SCALE
DATE
DRAWN BY
FILE NAME
,"',HEFT
050217. D0.00 0007
REV' 1
08
49
28
1'. = BO'
MAR 2008
T.L.R.
IT 0 SK46b
1 DF 1
EXHIBIT B
GOLDEN GATE BOULEVARD POND SITE PARCELS
ALL INTERESTS TO BE ACQUIRED IN FEE SIMPLE
Parcel No. Legal Description:
136FEE1 The East 165 feet of Tract 18, Golden Gate Estates Unit No. 13, according to
the plat thereof, as recorded in Plat Book 7, Pages 71 through 72, of the public
records of Collier County, Florida. Folio No. 37221200005.
Item # 1 OF
136FEE2 The West 180 feet of Tract 19, Golden Gate Estates Unit No. 13, acco ber23,2008
the plat thereof, as recorded in Plat Book 7, Pages 71 through 72, of t e cof 43
records of Collier County, Florida. Folio No. 37221280009.
184FEE The West 150 feet of Tract 130, Golden Gate Estates Unit No. 13, according to
the plat thereof, as recorded in Plat Book 7, Pages 71 through 72, of the public
records of Collier County, Florida. Folio No. 37228760001.
185FEE The East 200 feet of Tract 130, Golden Gate Estates Unit No. 13, according to
the plat thereof, as recorded in Plat Book 7, Pages 71 through 72, of the public
records of Collier County, Florida. Folio No. 37228720009.
210FEE The East 180 feet of Tract 57, Golden Gate Estates Unit No. 48, according to
the plat thereof, as recorded in Plat Book 5, Page 78, of the public records of
Collier County, Florida. Folio No. 39204000000.
208FEE The West 150 feet of Tract 57, Golden Gate Estates Unit No. 48, according to
the plat thereof, as recorded in Plat Book 5, Page 78, of the public records of
Collier County, Florida. Folio No. 39204040002.
292FEE West 180 feet of Tract 101, Golden Gate Estates Unit No. 51, according to the
plat thereof, as recorded in Plat Book 5, Pages 84 and 85, of the public records
of Collier County, Florida Folio No. 39390480000.
294FEE East 150 feet of Tract 101, Golden Gate Estates Unit No. 51, according to the
plat thereof, as recorded in Plat Book 5, Pages 84 and 85, of the public records
of Collier County, Florida Folio No. 39390440008.
308FEE The West 180 feet of Tract 153, Golden Gate Estates Unit No. 51, according to
the plat thereof, as recorded in Plat Book 5, Pages 84 and 85, of the public
records of Collier County, Florida. Folio No, 39394600006.
310FEE The West 75 feet of the East 150 feet of Tract 153, Golden Gate Estates Unit
No. 51, according to the plat thereof, as recorded in Plat Book 5, Pages 84 and
85, of the public records of Collier County, Florida. Folio No. 39394680000.
311 FEE The East 75 feet of Tract 153, Golden Gate Estates Unit No. 51, according to
the plat thereof, as recorded in Plat Book 5, Pages 84 and 85, of the public
records of Collier County, Florida. Folio No. 39394640008.
444FEE Tract 63, Golden Gate Estates Unit No. 80, according to the plat thereof, as
recorded in Plat Book 5, Page 18, of the public records of Collier County,
Florida. Folio No. 40866000000.
467FEE Tract 19, Golden Gate Estates Unit No. 78, according to the plat thereof, as
recorded in Plat Book 5, Page 16, of the public records of Collier County,
Florida. Folio No. 40741080006
J
Item # 10F
September 23, 2008
Page 10 of 43
Widening of Golden Gate Boulevard
from Wilson to DeSoto
Collier County Project No. 60040
POND SITING REPORT
_:_6 •
Coen County
GULr5HQ E
1= NGINEERING, INC
2375 Tamiami Trail N. Suite 207
Naples, FL 34103
Phone (239) 261 -2290
Fax(239)261-6530
PREPARED BY:
GEI PN: 186
Stanley Consultants .r-
Preliminary Report: December, 2006
This Edition:.lune, 2007
_21
Item # 10F
September 23, 2008
Page 11 of 43
Widening of Golden Gate Boulevard
from Wilson to Desoto
Collier County Project No. 60040
POND SITING REPORT
Widening of Golden Gate Boulevard
From Wilson Boulevard to DeSoto Boulevard.
Collier County, Florida
This Collier County Transportation project consists of (4) four - laning an existing (2) two -
lane rural roadway. This capital improvement project is consistent with the Collier County
j GMP. It provides added capacity and safety improvements to the approximately (6) six
mile east -west Golden Gate Boulevard corridor from Wilson Boulevard to DeSoto
Boulevard.
GULF5t1 E
ENGINEERING, INC.
2375 Tamiami Trail N. Suite 207
Naples, FL 34103
Phone (239) 261- 2290
Fax(239)261-6530
PREPARED BY:
GEI PN: 186
Stanley Onsuhaft a-
Preliminary Report: December, 2006
This Edition: June 12, 2007
Item # 1 OF
September 23, 2008
Page 12 of 43
EXECUTIVE SUMMARY
The following report identifies the preferred pond site locations for the widening
of Golden Gate Boulevard from Wilson Boulevard to Desoto Boulevard in the
Golden Gate Estates area of Naples, Collier County, Florida. The Project
consists of widening the existing (2) two -lane rural roadway to accommodate an
ultimate urban (6) six -lane configuration. The east -west corridor spans
approximately (6) six miles. It includes (3) three transportation and utilities bridge
crossings over the Golden Gate, Miller and Faka -Union Canals.
Components of this Capital Improvement Project include the design and
permitting of Stormwater Treatment Areas (pond sites) that comply with current
Environmental Resource Permitting (ERP) requirements. The ERP process is a
jointly established State and Federal program that regulates impacts to natural
resources and evaluates the proposed design for its potential to mitigate,
compensate, or enhance affected areas as applicable.
Various pond site options have been identified and their corresponding taxable
land values duly noted per the Collier County Property Appraisers web page, as
of November, 2006. The options were selected from single tracts or any number
of contiguous individual parcels yielding approximately 5.00 acres in order to
maintain consistency with the applicable SFWMD dimensional requirements. To
satisfy the design requirements of this roadway corridor, the latest revisions to
the surface water management system will now include a total of seven 7 pond
sites.
The potential pond sites contained herein have been identified based on
currently available information. Although it was not possible to ascertain all the
site criteria in every option presented, best engineering judgement was used to
identify and quantify the factors which could materially affect the ranking process.
Seven separate analyses have been presented, and in all cases the locations
selected represent the best estimate from all available data with emphasis given
to the individual factors deemed most pertinent to the final valuation.
In this analysis, the selected pond options were based on an assessment of
engineering, environmental and land cost factors. These selection factors include
consideration of environmental impacts, functional value & habitat, setbacks from
public potable water sources, wet season water table, soil type, distance to
outfall canals, current land use, and land acquisition costs.
Item # 10F
September 23, 2008
Page 13 of 43
TABLE OF CONTENTS
Page No.
Executive Summary
SECTION 1 - INTRODUCTION
1.1 Background
SECTION 2 - EXISTING CONDITIONS 3
2.1 Location 3
2.2 Existing Typical Section and Profile 3
2.3 Existing Surface Water Conditions - Drainage 7
2.4 FEMA Floodplain 10
SECTION 3 - DESIGN INFORMATION
11
3.1 Design Information Source
11
3.2 Design Assumptions
11
3.2.1 Control Elevation
11
3.2.2 Water Quality Treatment
13
3.2.3 Water Quantity
15
3.2.4 Design Storm
16
3.2.5 Pond Site Configuration
16
SECTION 4 - PROPOSED CONDITIONS
17
4.1 Typical Cross - Sections
17
4.2 Drainage
17
SECTION 5 - POTENTIAL POND SITES
18
5.1 Methodology
18
5.2 Basin No. 1W
19
5.3 Basin No. 1E
20
5.4 Basin No. 2W
21
5.5 Basin No. 2E
22
5.6 Basin No. 3W
23
5.7 Basin No. 3E
25
5.8 Basin No. 4
26
5.9 Potential Wetland Impacts at Pond Site Options
27
5.10Geotechnical & Subsurface Conditions at Pond Sites
27
SECTION 6 - CONCLUSION & RECOMMENDATIONS
29
LIST OF FIGURES
Figure No.
1 -1 Location Map
Item # 10F
September 23, 2008
Page 14 of 43
Page No.
2
2 -1
Existing Typical Section and Profile
3
2 -2
Existing Topography - LiDar Imagery
4
2 -3
Existing Golden Gate Canal Crossing
5
2-4
Existing Miller Canal Crossing
5
2 -5
Existing Faka -Union Canal Crossing
6
2 -6
Existing 36" raw water main
7
2 -7
Basin Divides
8
2 -8
Sub -Basin Divides
9
3 -1
Typical Groundwater Elevation Boring
12
3 -2
Suggested Control Elevations per Basin
13
3 -3
Proposed Water Quality Volumes per Basin
14
3-4
Predevelopment Discharge Rates per Basin
15
5 -1
Preliminary Taxable Value Assessment - Basin No.
1W
19
5 -2
Preliminary Taxable Value Assessment - Basin No.
1 E
21
5 -3
Preliminary Taxable Value Assessment - Basin No.
2W
22
5 -4
Preliminary Taxable Value Assessment - Basin No.
2E
23
5 -5
Preliminary Taxable Value Assessment - Basin No.
3W
24
5 -6
Preliminary Taxable Value Assessment - Basin No.
3E
25
5 -7
Preliminary Taxable Value Assessment - Basin No.
4
26
6 -1 Final Pond Options Selected per Basin
Appendices
Appendix A - Basin Map
Appendix B - Test Soil Borings at Pond Locations
Appendix C - Pond Siting Exhibits
Appendix D - Water Quality Computations
Appendix E - Predevelopment Discharge Rates
Appendix F - Proposed Typical Roadway Cross - Sections
Appendix G - FEMA Flood Maps
Appendix H - SFWMD & BCB Pre - application Meeting Minutes
Appendix I - Geotechnical Letter Report #5
Appendix J - Summary of Pond Analysis Evaluation Criteria
29
iv
Item # 10F
September 23, 2008
Page 15 of 43
SECTION 1
INTRODUCTION
1.1 Background
In response to population expansion and growth patterns observed throughout
many coastal communities in the State of Florida, Collier County Government
adopted in 1991, the Golden Gate Area Master Plan (GGAMP) as a unique and
separate instrument from the County wide Growth Management Plan (GMP).
The GGAMP was created in order to preserve the rural character and
uniqueness of the area.
The Collier County Transportation Services Division through the Transportation
Planning Department is continually reviewing, updating and planning capital
improvement projects consistent with the GGAMP. True to its living document
nature, the GGAMP has since undergone revisions and updates.
The Transportation related goals and objectives of the GGAMP call for
improvements within the Golden Gate Estates area that provide a safe and
efficient County and local roadway network, while maintaining the rural character
of the area. Objective 6.1 of the GGAMP reads as follow: "The Collier County
Transportation Division will continue to increase the number of route alternatives
for traffic moving through the Golden Gate Area in both east -west and north-
- ) south directions, consistent with neighborhood traffic safety considerations, and
consistent with the preservation of the area's rural character"
The County is addressing these GGAMP goals and objectives by (4) four - laning
Golden Gate Boulevard from Wilson Boulevard to DeSoto Boulevard. [Figure No.
1 -1].
This pond siting report discusses viable wet detention pond site locations
capable of providing volumetric water quality treatment for the greater of 1" over
the entire Right -of -Way or 2.5" times the new impervious cover, plus a 50%
added treatment as a means of reasonable water quality assurance. These
requirements are set forth by the South Florida Water Management District in
their Volume IV- Basis of Review manual.
The reported pond sites contained herein have been selected considering the
best available information. The desirability of these locations is based on
assessments and evaluations which include, but are not limited to environmental
impacts, functional value & habitat, setbacks from public potable water sources,
wet season water table, soil type, distance to outfall canals, current land use, and
land acquisition costs.
The wet detention water management pond system is being designed to provide
treatment for the ultimate (6) six -lane configuration throughout the corridor.
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Surplus water quality treatment may be quantified and used to compensate for
minor improvements within the alignment part of this project, or applied towards
future County roadway improvements within the watershed. In addition, where
feasible, the ponds will be sculpted to follow natural wetland contours with the
intent of reducing direct impacts, provide littoral shelf areas, and increase
enhancement potentials throughout the treatment system.
Figure No. 1 -1
Location Map
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September 23, 2008
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SECTION 2
EXISTING CONDITIONS
2.1 Location
The project is located in the Golden Gate Estates area of Naples in Collier
County, Florida. The project begins at the intersections of Golden Gate
Boulevard and Wilson Boulevard in Section 4, Township 49E, Range 27S
extending eastward in a fairly straight alignment for approximately (6) six miles
until reaching the intersections of Golden Gate Boulevard and DeSoto Boulevard
in Section 4, Township 49E, Range 28S. A location map is enclosed for
reference and labeled as [Figure No. 1 -1].
2.2 Existing Typical Section and Profile
The existing Golden Gate Boulevard corridor from Wilson to DeSoto consists of a
(2) two lane undivided rural roadway with standard 12 foot lanes and 8 foot lime -
rock stabilized shoulders. A typical photo of existing conditions is enclosed as
[Figure No. 2 -11.
Figure No. 2 -1
Existing Typical Section and Profile
Intersection of Golden Gate Boulevard and DeSoto Boulevard looking west
Page No. 3
}
A.
.
} t
iM
Y
}
r
f
ppp
Figure No. 2 -1
Existing Typical Section and Profile
Intersection of Golden Gate Boulevard and DeSoto Boulevard looking west
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Natural grade elevations within the project corridor and adjacent to the existing
road alignment show slight variations in topography ranging from 10.00' NAVD at
the lower locations to 13.50' NAVD at higher grounds with an average elevation
ranging between 11.50' and 12.00' NAVD.
LiDar imagery of the project area further corroborates flat topographic conditions.
Very mild slopes of less than 1 foot of vertical fall per horizontal mile prevail
throughout the corridor. An exhibit depicting the existing low ground elevations in
light tones of blue & green is included below and identified as [Figure No. 2 -2].
STHAVENW IATHAVE N� 18TH AVEW 18rHAVEAE
VM BMW AMC BLVD E JUNG BLVD ATNGELVDE
6THAVEW H HAVENS 16THAVENE 16THAVENE 16THAVEW 16rH AVEN'E
RN AYE NW #¢HAVE M Wn Avg AZ i UTHAVENE j 14THAVE NE 1R'H AVE NE N.T.&
2THAVEHW fITHAVE i2THAVE NE 12THAVENE } 12THAVE HE 12THAVEHE Z
HAVE" z WHAVE HE 10TH AVE HE i 10TH AVE NE r 10THAVENE
I LTHAVENE 6THAVE NE
id
O it
6i AVENE 1 6iH AYE NE
z
Begin a ti e 4 Q j End
NM ALE NE Pro ect
Project Golden Gate Boulevard 1
2V0 AVE SE •• •.J.. 1NDAVESE
w Q <
w 'Q A AVESE U ATlI AVE SE
ti 1�
6TH AVE SE Z aHAVE Sf
9 � aTHavESE 56THAVess
2
o LL
AG wtN(�{_yE CaOTHAVE� � {., 10THAVE 6E 10TH AVE SE
F zn W 1TTHAVEEE 12TH AVE Be •I
d n
1(T8 AVE SE #ATHAVESE
o 16THAVESE 16THAVESE.
Figure No. 2 -2
Existing Topography - LiDar Imagery
Natural Ground Elevations range between 10.0'& 13.5' NAVD.
The existing roadway crosses the Big Cypress Basin canal network at the
Golden Gate, Miller and Faka -Union Canals. These existing crossings consist of
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September 23, 2008
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pile supported bridges which are maintained by Collier County. Photographs of
the existinq canal crossings are included as [Figure No. 2 -3 through No. 2 -5].
Figure No. 2 -3
Existing Golden Gate Canal Crossing - May 2006
Figure No. 2-4
Existing Miller Canal Crossing - May 2006
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September 23, 2008
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Figure No. 2 -5
Existing Faka -Union Canal Crossing - May 2006
As part of this proposed road widening project, all (3) three canal crossings are
being replaced with new pile supported bridge structures, accommodating the
ultimate (6) six lane configuration plus pedestrian sidewalks along both sides. In
addition, (2) two of the structures must consider the existing City of Naples 36"
raw water main which extends eastward along the north side of the road right -of-
way. The raw water main does not cross the Faka -Union canal. A picture of the
existing raw water main at the Golden Gate canal crossing is enclosed and
labeled as [Figure No. 2 -6].
The South Florida Water Management District through the Big Cypress Basins in
Naples regulates and grants authorization for improvements within their canal
right -of -ways.
Procedural and minimum design requirements were discussed with the Big
Cypress Basin Staff on two separate occasions; initial pre - application meeting
held on June 2gt", 2006 as well as meeting on February 8th, 2007. The canal
crossings will require restoration of the canal cross - sections back to original
design conditions, 50 feet both up- stream and down - stream of each crossing.
For a copy of these meeting minutes with BCB, please refer to Appendix "H" -
SFWMD & BCB Pre - application Meeting Minutes at the end of this report.
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September 23, 2008
Page 21 of 43
Figure No. 2-6
Existing 36" Raw Water Main at the Golden Gate Canal Crossing - May 2006
2.3 Existing Surface Water Conditions - Drainage
Surface water conditions in the Golden Gate Estates are managed through a
network of canals and control structures operated and maintained by the Big
Cypress Basin. BCB is part of the South Florida Water Management District. It
was created in January of 1977 with specific regional objectives of conservation,
preservation and enhancement of the water resources within Collier and a
portion of Monroe Counties.
The existing canal network was constructed back in 1960 by the Gulf American
Corporation with the purpose of lowering surface and ground water levels for the
development of residential infrastructures. The canal network serves the entire
Golden Gate Estates area of Collier County. The system consists of
approximately 170 miles of canals and over 45 water control structures. The
system provides surface water management for a watershed that extends over
120 square miles.
The various control structures and weirs that exist throughout the area were
installed to prevent over - drainage, enhance water supply, provide flood control
protection, and increase groundwater aquifer recharge.
Construction of the existing canal network resulted in fragmentation of historic
watersheds, elimination of natural sloughs, and the alterations of surface and
groundwater timing distributions. A realistic assessment of this watershed
concludes that this canal network fundamentally altered the hydrology of Golden
Gate Estates. The canals intercept ground water outflow and have contributed to
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l lowered ground water tables and altered the historic rainfall- response model
characteristic to this area. The net result, pertinent to our effort, has been
lowered control elevations for the water management basins we now have under
design. For additional and up to date information related to the Big Cypress
Basin and their surface water operations, please visit www.sfwmd.gov and
search for: "BCB home page ".
The project lies within (2) two distinct Basins. The Main Golden Gate Canal Basin
encompasses the portion of the project located between Wilson Boulevard and
the Miller Canal. The Faka -Union Canal Basin extends eastward from the Miller
Canal to DeSoto Boulevard. An illustration of the Basin divide is enclosed and
labeled [Figure No. 2 -7].
Figure No. 2 -7
Basin Divide
Surface water flow patterns within the Main Golden Gate Canal Basin; follow a
southwest alignment until reaching waters of the Gordon River and Naples Bay
via the Main Golden Gate main Canal.
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Flows from the Faka -Union Canal Basin are routed due south into the Picayune
Strand where the Florida Department of Environmental Protection - FDEP and
the South Florida Water Management District - SFWMD are engaged in a project
known as the Picayune Strand Restoration, part of the Acceler8 Everglades
Restoration Program. This particular project involves the restoration of the
natural water flow across 85 square miles in western Collier County that were
over drained by development. The project includes three pump stations with
spreader canals, canal plugs and 227 miles of road removal. Levees and
hydraulic conveyances are planned to provide flood protection for adjacent
private properties and to prevent impacts resulting from construction of the
project.
All flows from the Faka -Union Canal Basin are ultimately conveyed into tidal
waters of the Ten Thousand Islands via the Main Faka -Union Canal.
Figure No. 2 -8
Sub -Basin Divide
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Both of these major Basins are further divided into smaller sub - basins, all of
which are influenced by the existing canal network and the previously referenced
structures that manage the surface water conditions in the area. Please refer to
[Figure 2 -81 for a map depicting the Sub -Basin delineations along the project
corridor.
2.4 FEMA Floodplain
The project area is located on the Federal Emergency Management Agency
(FEMA) Flood Insurance Rate Map (FIRM) Community -Panel Number
12021C0450G, dated November 17th, 2005. The project corridor lies within Zone
"D ". Please refer to Appendix "G" - FEMA Flood Maps, for additional information.
Zone "D" is described as an area in which flood hazards are undetermined, but
possible. No minimum finished floor elevations or additional minimum
requirements are reported in the FEMA maps.
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j SECTION 3
DESIGN INFORMATION
3.1 Design Information Source
The following list reports the various documents that were consulted during the
pond siting process.
• Gulfshore Engineering, Inc. field borings & ground water observations - Oct. 06.
• Gulfshore Engineering, Inc & Scheda Ecological Associates. Field Reviews - 2006.
• R.W.A., Inc. Raster images and Survey Data. - 2006.
• Dunkelberger Engineering & Testing July 2006 Soil Borings Report.
• Dunkelberger Engineering & Testing: Letter Report #4, April 24"" 2007, Letter Report #5, May 16"'
2007.
• South Florida Water Management District Volume IV- Basis of Review- Feb. 2006.
• Evaluation ofAltemative Surface Water Regulations for Southwest Fla. Harvey Harper, PhD. PE.
• FDOT 2006 Drainage Manual.
• SFWMD ERP No. 11 -01770 -P. Application No. 990910 -18.
• SFWMD online DB -Hydro.
• Big Cypress Basin - SFWMD MIKE -11 Model Results.
• Big Cypress Basin - Facility and Infrastructure Location Index Map (EN103104).
• B.C.B. ROW Permit Information Manuel - Volume V - Use of Works of the District Sep. 1999.
• B.C.B. Operation Schedule of Water Control Structures - Jan. 2000.
• B. C.B. Watershed Management Plan - May 2000.
• B.C.B. Flood Report - Tropical Storm Ernesto - Aug. 2006.
• B. C. S. Post Ernesto Report - Sept. 2006.
• B.C.B. Golden Gate Canal Improvements - Oct. 2006.
• NRCS (F. K.A. USDA) Soil Survey of Collier County Area.
• Collier County Public GIS Fries.
• Collier County Property Appraisers on -line database.
• Collier County Aerial raster riles -1995.
• Collier County Land Development Code -Sep. 2005.
• Pre - Application meeting minutes with SFWMD & BCB. — 2006.
3.2 Design Assumptions
Design assumptions are based on the best available information and project
specific field observations conducted as part of the Design and Permitting effort
associated with the widening of Golden Gate Boulevard from Wilson to DeSoto.
Project specific data collection efforts include existing topography, evaluation of
existing natural resources (soils, hydrology and vegetation), current land -uses,
existing permits, input from various publications and meetings with Government
Staff that have jurisdiction over the project corridor and that either manage,
protect, monitor, regulate, operate and /or maintain resources in the project
corridor.
3.2.1 Control Elevation
A critical component of the surface water management system is establishing an
accurate basin Control Elevation or lowest elevation at which water can be
released from the surface water treatment ponds. Based on this analysis of
acquired evidence, a number of control elevations were identified. In order to
maintain proper hydrology, the project was therefore divided into various basins.
1 A map delineating and identifying the various project basins is enclosed and
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labeled as Appendix "A" - Basin Map. A more elaborate discussion pertaining to
the proposed basin delineations is presented in Section 4 of this report.
Each roadway segment is contained within the limits of a specific basin. All
surface water collected by the proposed Stormwater management system is
routed into a wet detention water quality treatment and attenuation pond prior to
offsite discharge into the B.C.B. canal system. Ultimately, the controlling
influence of the canals cannot be over emphasized, they are the receiving body
of water and their design operating levels had to be factored into this analysis.
Natural ground elevations were determined via survey field work and digital
ortho- photos generated by RWA, Inc. Clusters where potential ponds could be
placed were field inspected and additional borings taken to determine existing
ground water table elevations. A typical photo depicting ambient ground water
conditions is identified as [Figure No. 3 -1].
Figure No. 3 -1
Typical Groundwater Elevation Boring
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Detailed exhibits showing the location of soil borings, dates of observed ground
water elevations and existing natural grades are enclosed at the end of this
Section under Appendix "B" - Test Soil Borings at Pond Locations. These
elevations were surveyed and field obtained by R.W.A., Inc.
A proposed control elevation is reported for each Basin. Gulfshore Engineering,
Inc., and Dunkelberger Engineering & Testing, Inc. findings were merged and
compared to wetland indicators set by Scheda Ecological Associates.
Consideration is given to setting a control elevation which falls at or above the
Wet Season Water Table (WSWT) in order to preserve hydrological conditions
and surrounding wetlands when applicable. The table below summarizes the
suggested control elevations per basin [Figure No. 3 -2].
Basin No.
Control Elevation - 1988 NAVD
1W
8.60' (exist' ERP)
1E
9.00'
2W
9.00'
2E
9.00'
3W
9.50'
3E
10.00'
4
10.00'
Figure No. 3 -2
Suggested Control Elevations per Basin
3.2.2 Water Quality Treatment
The proposed Stormwater management system is required to provide water
quality treatment for the greater of 1" over the entire proposed Right -of -Way or
2.5" times the new impervious cover, plus a 50% added treatment as means of
reasonable water quality assurance. These requirements are set forth by the
South Florida Water Management District in their Volume IV- Basis of Review,
Section 5.2.1. -Water Quality Volumetric Requirements.
In addition, a pollutant loading analysis, based on the Harvey Harper
Methodology, may be required by the USACOE and the SFWMD. The proposed
system must demonstrate that no net increase in pollutant loadings are
anticipated under post development conditions.
> The efficacy of the system to provide water quality treatment is directly
proportional to the land area covered by the wet detention pond, the provided
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storage volume and the residence time prior to offsite discharge. As is normal for
linear water management basin projects, the unavailability of treatment areas in
desired strategic locations often leads to constraints in the design. Portions of the
roadway corridor will be restricted in their ability to provide direct water quality
treatment and must rely on surplus treatment volumes elsewhere to compensate
accordingly. In any case the overall volumetric water quality requirements for the
overall project will be ensured by the available detention facilities, thus ensuring
compliance to SFWMD rules.
In addition, the proposed roadway cross - section calls for conveyance swales
along both sides of the corridor. These sodded swales will provide conveyance
for offsite runoff entering the right of way. As a practical matter, the length of the
roadway swales is such that some attenuation and water quality pre - treatment
will be provided to the runoff being conveyed. The significant delay, attributable
to travel time, will allowing settling and infiltration to occur before the offsite runoff
enters the canal system.
The following table (Figure No. 3 -3) summarizes the anticipated water quality
treatment volumes that will be required from each basin as well as the overall
project.
Golden Gate Boulevard from Wilson to DeSoto
Water Quality Requirements per Basin
Basin No.
Water Quality Volumes
(ac -ft)
1W
3.67
1E
2.70
2W
_
2.94
2E
2.96
3W
3.83
3E
3.83
4
4.47
Total =
24.4
Figure No. 3 -3
Proposed Water Quality Volumes per Basin
Per basin spreadsheets detailing the various land covers and basin areas used
to establish these preliminary water quality volumes are included at the end of
this report under Appendix "D" - Water Quality Computations.
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3.2.3 Water Quantity
The proposed road widening extends the existing (4) four -lane Golden Gate
Boulevard from Collier Boulevard to Wilson Boulevard. The corridor was
designed and permitted with a water quantity requirement based on pre vs. post
development analysis. Under current conditions, the existing (2) two lane rural
roadway segment is allowed to discharge without attenuation.
The allowable discharge will be established not to exceed the pre development
rate, thus complying with the criteria established under the SFWMD Volume IV -
Basis of Review, Section 6.2.(b). which requires designs based on a modification
to a previously permitted project, to abide by the previous District permit action.
The use of pre development discharge rates as a limiting factor in establishing
the allowable post development discharge ensures that no adverse drainage
impacts to existing offsite properties will result from construction. of the intended
road widening project.
The following table [Figure No. 34] provides a summary of predevelopment
discharge rates per basin. These figures represent the maximum allowable
discharge under post development conditions that will be used to design the
outfall control structures.
Golden Gate Boulevard from Wilson #a Desoto
Predevslopment Discharge Rate$ per Basin
Basin No.
Water Quantity
Peak Discharge Rates
(cfs)
1W
58.2
1 E
49.7
2W
56.4
2E
55.5
3W
69.6
3E
69.0
4
68.7
Total =
427.1
Figure No. 3-4
Predevelopment Discharge Rates per Basin
Per basin spreadsheets reporting the predevelopment discharge computations
are included under Appendix "E" - Predevelopment Discharge Rates.
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3.2.4 Design Storm
As specified by the current SFWMD environmental resource permit No. 11-
01770-P - Application No. 990910 -18, the design storm event for the project
corridor must be a 25 year - 3 day event. In addition, the 25 year -3 day storm is
by default, the design storm for projects within the jurisdiction of the South
Florida Water Management District as established in the SFWMD, Volume IV-
Basis of Review, Section 6.3.
A 72 hr rainfall intensity of 11.3" will be utilized for the final design. This
parameter is consistent with the previously permitted conditions as well as the
SFWMD Basis of Review - Volume IV, Intensity Distribution Charts.
3.2.5 Pond Site Configuration
The proposed wet detention ponds will be configured to comply with SFWMD
and Collier County pond dimensional criteria as established in Volume IV- Basis
of review and the Collier County Land Development Code respectively.
All wet detention ponds are required to have at least 0.5 acres in surface area
measured at the basin control elevation. In addition, for a pond water quality
treatment potential to be credited towards the treatment volume, the average
width of any segment must be equal or greater than 100 feet over any 200 feet
bank length.
All ponds will incorporate shallow littoral areas for water quality enhancement
purposes. Such areas are defined as the portions of wet detention bodies
shallower than 6 feet as measured from below the control elevation. These
littoral areas will span over approximately 40% of the proposed wet detention
pond shorelines and will be planted with native vegetation material approved by
the SFWMD.
All ponds will be excavated so that anywhere between 25 to 50 percent of the
wet detention area is deeper than 12 feet measured from the ponds control
elevation. As required by current County and State regulations, the wet
detention ponds will be designed with side slopes no steeper than 4:1
(horizontal:vertical) from top of bank out to a minimum depth of two feet below
the control elevation.
Typical for all ponds, a minimum 20 feet wide perimeter maintenance and
operation easement, will be provided with initial 20:1 ( horizontal:vertical) slope to
allow safe driving conditions; slopes will be no steeper than 4:1 for the balance
extending down to, and beyond the control elevation water line. These
easements are legally reserved for Collier County in order to ensure proper
operation and maintenance of the surface water management system.
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SECTION 4
PROPOSED CONDITIONS
4.1 Typical Cross - Sections
The widening of Golden Gate Boulevard from Wilson Boulevard to DeSoto
Boulevard proposes an ultimate (6) six lane configuration with a potential (4) four
lane intermediate alignment prior to build -out.
The typical urban curb and gutter divided cross section will accommodate (6) six
travel lanes each of them measuring (11) eleven feet in width. A (22) twenty two
foot wide landscaped median will span through most of the center line. Please
refer to Appendix "F" - Proposed Typical Roadway Cross - Sections at the end of
this section, for additional information.
The proposed cross - section incorporates (2) two bicycle lanes, each measuring
(4) four feet in width. Completing the geometry are (2) two pedestrian sidewalks
each measuring (6) six feet in width and sodded conveyance swales along the
limits of the proposed right -of -way.
The cross - sections at the bridge crossings exclude landscaped medians and
sodded dry detention conveyance swales. An illustration depicting the typical
bridge cross - section view is incorporated and identified as Appendix "F" -
Proposed Typical Roadway Cross - Sections.
4.2 Drainage
The roadway incorporates a curb and gutter storm sewer system, conveying
collected runoff within the proposed right -of -way, and routing it via an enclosed
storm sewer network, directly onto wet detention water quality and attenuation
ponds. Each basin will have (1) one wet detention pond. A total of (7) seven
such ponds are proposed.
Water quality and attenuation will be provided as described in Section 3 - Design
Information, of this report. Upon treatment completion, all ponds will ultimately
discharge into the Big Cypress Basin canal system in a controlled manner.
The proposed facilities for Basin 1W, the westernmost roadway SWM basin, will
be designed to outfall into the west right of way roadside Swale of Wilson
Boulevard, as allowed under current permit. Drainage into this Swale is conveyed
south into the Golden Gate Canal. Discharge from all the other ponds will enter
the adjacent BCB canal directly. No adverse water quality or quantity effects are
anticipated as a result from construction of the proposed improvements.
Page No. W
Item # 10F
September 23, 2008
Page 32 of 43
1 SECTION 5
/ POTENTIAL POND SITES
5.1 Methodology
The approach to identify potential pond sites began by considering a number of
typical factors:
• Pond Dimensional Requirements
In order to satisfy SFWMD requirements for wet detention ponds, the
minimum lot widths available in the Golden Gate Estates area suggest
that typical treatment areas will require a minimum of (2) two contiguous
lots. The search for adequate parcels was therefore narrowed to a
single tract or any number of contiguous individual parcels yielding
approximately 5.00 acres for a typical basin.
• Pond Locations
Basins located west of the Faka -Union Canal had to be configured to
avoid the 36" City of Naples raw water line which runs along the north
side of the right -of -way. In this area therefore, potential pond locations
were limited to parcels south of the Golden Gate Boulevard right -of -way.
To maintain consistency with SFWMD Volume IV - Basis of Review
criteria, the ponds had to be located at a minimum of (300) three
hundred feet from potential sources of potable water, in this case, the
BCB Canals. This factor not withstanding, potential pond sites were
selected for their proximity to the canal outfall. This, in order to reduce
piping and conveyance cost.
• Existing Site Conditions
The selection process had to be sensitive to the potential wetland and
environmental impacts associated with the creation of treatment ponds
within these areas of open space. Preference was given to parcels
having lesser environmental functional value.
Beyond the initial identification process, field inspections were carried
out to further identify potential wetland areas, ambient ground water
elevations, hydrological indicators and preliminary soils evaluation.
• Parcel Availability
Ultimately, potential pond sites were identified among parcels of
unencumbered or undeveloped open space. Residential home sites or
occupied tracts were omitted as viable alternatives. In this effort, field
visits, aerial photos, LiDar imagery, existing canal locations and other
pertinent GIS data were consulted to help identify potential locations.
Page No. 18
Item # 10F
September 23, 2008
Page 33 of 43
—� Preliminary taxable land values per the Collier County property Appraisers web
page, as of November, 2006, have been utilized to estimate the cost of parcels
involved.
5.2 Basin No. 1W
This initial section of The Golden Gate Boulevard corridor extends from west of
Wilson Boulevard to 2nd Street. This segment of roadway will be a modification to
Sub -basin #18, the easternmost water management basin identified in the
existing SFWMD permit. The proposed new right -of -way covers approximately
19.40 acres, although this wet detention facility will also have to satisfy water
quality requirements for an additional offsite area of 4.8 acres as well as the
added impervious area to a transitional roadway segment (1.94 ac) located in
Sub -Basin #17, an existing basin in current permitted surface water management
system.
A Pond Siting Exhibit for this first basin is enclosed in Appendix "C ". There are
(6) six properties identified which make up the (4) four distinctive potential pond
sites reported in the referenced exhibit. The following table [Figure No. 5 -1]
reports taxable land values taken from the Collier County Property Appraisers
web site.
,Golden 'Gate BAUleva�d from Wilson toDeSoto
Preliminary Taxable Value Assessment - November 006 °
Basin No 1 W
Option No.
Parcel Folio ID
No.
Parcel Area
(ac).
Collier County Property
Appraiser Taxable Value
$
37221200005
2.30
$ 142,600.00
$
37221280009
2.50
$ 155,000.00
4.8 $ 297,600.00
2
37223880009
5.15
1 $ 159,960.00
$
319,300.00
1 2.58
5.15
$
319,300.00
3 37223840007 5.15 1 $ 77;19,300.00
5.15 $ 319,300.00
5.16 $ 319,920.00
[Figure No. 5 -1]
-- - Preliminary Taxable Value Assessment - Basin No. 1W
Page No. 19
37223920105
1 2.58
1 $ 159,960.00
4 1
37223920008
1 2.58
1 $ 159,960.00
5.16 $ 319,920.00
[Figure No. 5 -1]
-- - Preliminary Taxable Value Assessment - Basin No. 1W
Page No. 19
J
Item # 10F
September 23, 2008
Page 34 of 43
1 Preliminary field assessments and boring samples taken at locations adjacent to
1 the pond sites in the roadway right of way revealed soils with cap rock present
anywhere between 30" to 54" below grade and various levels of ground water as
per observations on 6/08/06 and 8/14/06. Scattered Brazilian pepper and vine
growth cover significant sections of the parcels. Importantly, Options 2, 3, and 4
also include cypress and wetland type vegetation while Pond Option No.1
appears to be solely within uplands.
In part due to these factors and also due to its proximity to the Wilson Boulevard
intersection, Option 1 was the highest ranked alternative in this analysis. A
summary of these factors can be consulted in Appendix "J ".
5.3 Basin No. 1 E
This second section of The Golden Gate Boulevard corridor extends from 2nd
Street to the Golden Gate Canal. The proposed right -of -way covers
approximately 17.74 acres.
A Pond Siting Exhibit for this basin is enclosed in Appendix "C ". There are (8)
eight properties identified which make up the (4) four distinctive potential pond
sites reported in the referenced exhibit. Any of the selected alternatives will
require the purchase of (2) two neighboring parcels.
Preliminary field assessments revealed soils with cap rock anywhere between 2
and 3 feet below surface with no ground water found at any of the (3) three soil
borings taken on October 26, 2006. Scattered Brazilian pepper and vine growth
cover significant sections of the parcels. Isolated clusters of cypress and wetland
type vegetation are located in and around pond location Options 1, 2 and 3,
although wetland areas located within Option 1 are of somewhat lower quality.
Significantly, Options 2 and 3 would impact the viability of the cypress wetland
area at the south east corner of 6th Street SE and Golden Gate Boulevard, thus
ensuring that problematic over - drainage and hydrology issues would have to be
addressed. Pond Option 4 appears to be solely within uplands however its close
proximity to the Golden Gate canal ( +/- 280 ft) is a potential problem which would
compromise the use of the entire parcel.
In consideration of all these factors and due to its desirable proximity to Golden
Gate Canal, Option 1 emerges with the highest ranking in this analysis. A
summary of these factors can be consulted in Appendix "J ".
The following table [Figure No. 5 -2] reports taxable land values taken from the
Collier County Property Appraisers web site.
Page No. 20
Item # 1 OF
September 23, 2008
Page 35 of 43
5.46 $
338,520.00
37228540001 2.65 $ 164,300.00
2 37228520005 2.50 $ 155,000.00
5.15 $
319,300.00
Parcel Folio ID
Parcel Area
Collier County Property
Option No.
No.
(ac).
Appraiser Taxable Value
37228760001
2.34
$ 145,080.00
37228720009
3.12
$ 193,440.00
5.46 $
338,520.00
37228540001 2.65 $ 164,300.00
2 37228520005 2.50 $ 155,000.00
5.15 $
319,300.00
4.84 $
300,080.00
37228520005
2.50
$ 155 000.00
3
37228560007
2.34
$ 145,080.00
4.84 $
300,080.00
5.45 i
[Figure No. 5 -21
Preliminary Taxable Value Assessment - Basin No. 1 E
.saa,ozu.UU
5.4 Basin No. 2W
This third segment of the project spans from the Golden Gate Canal east to 16th
Street. The proposed right -of -way covers approximately 19.64 acres.
A Pond Siting Exhibit for this basin is enclosed in Appendix "C ". There are (4)
four properties identified which make up the (3) three distinctive potential pond
sites reported in the referenced exhibit.
Preliminary field assessments and boring samples taken at locations adjacent to
the pond sites in the roadway right of way suggest sandy soils with cap rock
present at 7' to 15' depth below grade and various levels of ground water as per
observations on 6/06/06. The overall character of these parcels is mostly upland
with scattered palmetto and pine with dense vine growth of poison ivy and poison
oak. Definitive assessment remains subjective however, with all the parcels
containing some pockets of cypress and wetland type vegetation. Importantly,
Options 2 and 3 appear to have larger areas of potential wetlands and they lie
Page No. 21
37230960006
2.81
$ 174,220.00
4
37231000004
2.65
$ 164,300.00
5.45 i
[Figure No. 5 -21
Preliminary Taxable Value Assessment - Basin No. 1 E
.saa,ozu.UU
5.4 Basin No. 2W
This third segment of the project spans from the Golden Gate Canal east to 16th
Street. The proposed right -of -way covers approximately 19.64 acres.
A Pond Siting Exhibit for this basin is enclosed in Appendix "C ". There are (4)
four properties identified which make up the (3) three distinctive potential pond
sites reported in the referenced exhibit.
Preliminary field assessments and boring samples taken at locations adjacent to
the pond sites in the roadway right of way suggest sandy soils with cap rock
present at 7' to 15' depth below grade and various levels of ground water as per
observations on 6/06/06. The overall character of these parcels is mostly upland
with scattered palmetto and pine with dense vine growth of poison ivy and poison
oak. Definitive assessment remains subjective however, with all the parcels
containing some pockets of cypress and wetland type vegetation. Importantly,
Options 2 and 3 appear to have larger areas of potential wetlands and they lie
Page No. 21
Item # 10F
September 23, 2008
Page 36 of 43
along the north right of way, a location made less desirable due to conflicts with
the City of Naples raw water main.
Of the factors discussed above, the fact that Option 1 is the only available
alternative on the south side of the roadway assumes particular importance from
an engineering and design standpoint and is in large measure attributable to its
highest ranking in this analysis. A summary of these factors can be consulted in
Appendix "J ".
The following table [Figure No. 5 -3] reports taxable land values taken form the
Collier County Property Appraisers web site.
5.08 $ 314,960.00
2 39261840009 5.15 $ 288,400.00
5.15 $ 288,400.00
3 39265360006 5.15 $ 288,400.00
5.15 $ 288,400.00
[Figure No. 5 -3]
Preliminary Taxable Value Assessment - Basin No. 2W
5.5 Basin No. 2E
This fourth section of the project spans from 16th Street to the Miller Canal. The
proposed right -of -way covers approximately 19.31 acres.
A Pond Siting Exhibit for this basin is enclosed in Appendix "C ". There are (6) six
properties identified which make up the (3) three distinctive potential pond sites
reported in the referenced exhibit. Any of the selected alternatives will require the
purchase of (2) two neighboring parcels.
Preliminary field assessments revealed well drained sandy soils with no ground
jwater found at any of the (4) four soil borings taken on October 26, 2006. One of
the locations produced cap rock 1.0' below natural grade. All potential pond
Page No. 22
Parcel Folio ID
Parcel Area
Collier County Property
Option No.
No.
(ac).
Appraiser Taxable Value
39204000000
2.81
$ 174,220.00
39204040002
2.27
$ 140 740.00
5.08 $ 314,960.00
2 39261840009 5.15 $ 288,400.00
5.15 $ 288,400.00
3 39265360006 5.15 $ 288,400.00
5.15 $ 288,400.00
[Figure No. 5 -3]
Preliminary Taxable Value Assessment - Basin No. 2W
5.5 Basin No. 2E
This fourth section of the project spans from 16th Street to the Miller Canal. The
proposed right -of -way covers approximately 19.31 acres.
A Pond Siting Exhibit for this basin is enclosed in Appendix "C ". There are (6) six
properties identified which make up the (3) three distinctive potential pond sites
reported in the referenced exhibit. Any of the selected alternatives will require the
purchase of (2) two neighboring parcels.
Preliminary field assessments revealed well drained sandy soils with no ground
jwater found at any of the (4) four soil borings taken on October 26, 2006. One of
the locations produced cap rock 1.0' below natural grade. All potential pond
Page No. 22
Item # 1 OF
September 23, 2008
Page 37 of 43
areas exhibit signs of previously disturbed vegetation cover. Site contains
scattered palmetto and pine with dense vine growth of poison ivy and poison oak.
All potential pond options appear to be within upland areas.
No clear alternative emerges from these findings and in this case the ultimate
ranking was established by reviewing the engineering considerations involved. In
order to mitigate the costs and limit the length and size of the trunk line culverts
entering the pond, the westernmost Option 1 was given a slight edge.
The following table [Figure No. 5 -41 reports taxable land values taken form the
Collier County Property Appraisers web site. A summary of these factors can be
consulted in Appendix "J" of this report.
5.15 $
319,300.00
Parcel Folio ID
Parcel Area
Collier County Property
Option No.
No.
ac .
A ipraiser Taxable Value
37228540001
$ 164,300.00
37228520005
2!
$ 155,000.00
5.15 $
319,300.00
4.68 $
280,800.00
39390440008
2.34
$ 140,400.00
2
39390560001
2.34
$ 140,400.OD
4.68 $
280,800.00
5.15 $ 309,000.00
[Figure No. 5-41
Preliminary Taxable Value Assessment - Basin No. 2E
5.6 Basin No. 3W
This fifth section of the project extends from the Miller Canal to Everglades
Boulevard. The proposed right -of -way covers approximately 26.24 acres.
A Pond Siting Exhibit for this basin is enclosed in Appendix "C ". There are (7)
seven properties identified which make up the (4) four distinctive potential pond
sites reported in the referenced exhibit. Any of the selected alternatives will
require the purchase of several neighboring parcels.
Page No. 23
39390560001
2.34
$ 140 400.00
3
39390520009
1 2.81
$ 168,600.00
5.15 $ 309,000.00
[Figure No. 5-41
Preliminary Taxable Value Assessment - Basin No. 2E
5.6 Basin No. 3W
This fifth section of the project extends from the Miller Canal to Everglades
Boulevard. The proposed right -of -way covers approximately 26.24 acres.
A Pond Siting Exhibit for this basin is enclosed in Appendix "C ". There are (7)
seven properties identified which make up the (4) four distinctive potential pond
sites reported in the referenced exhibit. Any of the selected alternatives will
require the purchase of several neighboring parcels.
Page No. 23
Item # 1 OF
September 23, 2008
Page 38 of 43
The following table [Figure No. 5 -5] reports taxable land values taken form the
Collier County Property Appraisers web site.
Option No.
Parcel Folio ID
No.
Parcel Area
(ac).
Collier County Property
Appraiser Taxable Value
3
39394440004
1.17
$ 70,200.00
2
39394480006
1.17
$ 70 200.00
39394520005
1.17
$ 70,200.00
39394560007
1.64
$ 98,400.00
5.15 $
309,000.00
3.98 $ 238,800.00
39394480006
1.17
$ 70,200.00
3
39394520005
1.17
$ 70,200.00
2
1 39394560007
1.64
$ 98,400.00
3.98 $ 238,800.00
4.37 $ 262,200.00
39394560007
1.64
$ 98,400.00
3
39394600006
2.73
$ 163,800.00
4.37 $ 262,200.00
5.04 $ 302,400.00
[Figure No. 5 -5]
Preliminary Taxable Value Assessment - Basin No. 3W
Preliminary field assessments reveal mucky soils with high content of organics
with ground water found at all of the (5) five soil borings taken on October 23,
2006. Scattered oaks with fern underbrush cover significant sections of the
parcels. Wetland type vegetation, soils and ground water conditions are present
at all pond location Options 1 though 4. The extent of wetland areas in the
various alternatives involved carried significant weight in this analysis.
Of the options listed, Option 4, comprised of only three individual parcels offered
some additional advantage as well as being the easternmost pond location, a
positive factor from the value engineering and design perspective. Please consult
Appendix "J" for a summary of these factors.
Page No. 24
39394600006
1 2.73
$ 163,800.00
39394680000
1.14
$ 68,400.00
4
39394640008
1,17
$ 70 200.00
5.04 $ 302,400.00
[Figure No. 5 -5]
Preliminary Taxable Value Assessment - Basin No. 3W
Preliminary field assessments reveal mucky soils with high content of organics
with ground water found at all of the (5) five soil borings taken on October 23,
2006. Scattered oaks with fern underbrush cover significant sections of the
parcels. Wetland type vegetation, soils and ground water conditions are present
at all pond location Options 1 though 4. The extent of wetland areas in the
various alternatives involved carried significant weight in this analysis.
Of the options listed, Option 4, comprised of only three individual parcels offered
some additional advantage as well as being the easternmost pond location, a
positive factor from the value engineering and design perspective. Please consult
Appendix "J" for a summary of these factors.
Page No. 24
Item # 1 OF
September 23, 2008
Page 39 of 43
5.7 Basin No. 3E
This sixth section of the project spans from the Everglades Boulevard to the
Faka -Union Canal. The proposed right -of -way covers approximately 26.31
acres.
A Pond Siting Exhibit for this basin is included in Appendix "C ". There are (2) two
distinctive potential pond sites reported in the referenced exhibit. In any case, the
selected option will require the purchase of (1) one of the parcels.
Preliminary field assessments revealed well drained sandy soils with ground
water found at all (3) three soil borings taken on October 19, 2006. Groundwater
was located between 3.5 and 4.0' below natural grade. One of the locations
produced cap rock 1.5' below natural grade. Pond site Option No. 1 contains
dense palmetto and scattered pine. Pond Option No. 2 is mainly covered with
pine Flatwoods, scattered palmetto and cabbage palm. All potential pond options
appear to be within upland areas.
As was the case in some of the previous discussions, the engineering design
considerations assumed greater importance in the ranking of these two
alternatives. The considerable distance ( +/- 1320') of these pondsites from the
canal outfall, suggested that Option 2 be given priority in this case.
The following table [Figure No. 5 -6] reports taxable land values taken form the
- a Collier County Property Appraisers web site. A summary of the pertinent factors
can be consulted in Appendix "J" of this report.
Golden Gate,Boulevard from, llson to�fleSo o ,
Preliminery Taxable Value Assessment Noveber;2006
Basin No 3E ; -
Option No.
Parcel Folio ID
No.
Parcel Area
(ac).
Collier County Property
Appraiser Taxable Value
1
40864520003
5.15
$ 283,250.00
5.15 $ 283,250.00
2 40866000000 5.15 $ 283,250.00
5.15 $ 283,250.00
[Figure No. 5 -6]
Preliminary Taxable Value Assessment - Basin No. 3E
J
Page No. 25
Item # 1 OF
September 23, 2008
Page 40 of 43
5.8 Basin No. 4
This seventh and last section of the project spans from the Faka -Union Canal to
DeSoto Boulevard. The proposed right -of -way covers approximately 31.13 acres.
A Pond Siting Exhibit for this final basin is enclosed in Appendix "C". There are
(2) two distinctive potential pond sites reported in the referenced exhibit. In any
case, the selected option will require the purchase of (1) one of the parcels.
Preliminary field assessments revealed well drained sandy soils with ground
water found at all of the (4) four soil borings taken on October 17, 2006.
Groundwater was located approximately 4.0' below natural grade. The sites
contain palmetto and pine Flatwoods with scattered vine growth. All potential
pond options appear to be within upland areas.
No clear alternative emerges from these findings and the final ranking was
attributed to the value engineering considerations involved. In this case, the
westernmost Option 2 was given the nod in order to mitigate the costs and limit
the trunk line culverts which extend east past of De Soto Boulevard.
The following table [Figure No. 5 -7] reports taxable land values taken form the
Collier County Property Appraisers web site and a summary of all the pertinent
factors is shown in Appendix "J ".
Golden Gate Boulevard from Wilson. to DeSoto
Preliminary Taxable Value Assessment - Noverribe 2006 k .
Basin No 4
Option No.
Parcel Folio ID
No.
Parcel Area
(ac).
Collier County Property
Appraiser Taxable Value
1
40741040004
5.15
$ 278,100.00
5.15 $ 278,100.00
2
40741080006
5. 5
$
278,100.00
5.15
$
278,100.00
[Figure No. 5 -7]
Preliminary Taxable Value Assessment - Basin No. 4
Page No. 26
Item # 10F
September 23, 2008
Page 41 of 43
5.9 Potential Wetland Impacts at Pond Site Options
As part of this pond site assessment, an initial quantitative effort reporting the
extent of existing wetland areas per pond site alternatives and per basin is
presented under this section.
While the reported figures do not necessarily quantify direct or secondary
wetland impacts per pond site alternatives, they can be used as a preliminary
reference tool during the site selection process. These values assume particular
importance where the selection between various pond alternatives depends on
the extent of wetland impacts. Please refer to the summary of all these factors
offered in Appendix "J" accompanying this narrative.
All wetland impacts will require proper mitigation. Alternatives include, but are
not limited to, avoidance and minimization, restoration and perpetual
preservation of existing lands within the basins, and /or the acquisition of credits
at a mitigation bank serving the area, such as; Panther Island, Crew Regional
Ecosystem Watershed (CREW); and /or Collier County Government owned lands.
In any case, it should be understood that cost will probably be directly
proportional to the resulting wetland impacts and the actual mitigation bank fees.
Field observations, jointly conducted by Scheda Ecological Associates and
Gulfshore Engineering, Inc., have allowed preliminary wetland line delineations
throughout the project corridor. Although these potential wetland areas must be
reviewed and accepted by both SFWMD and the USACOE, these preliminary
delineations should be consistent with current regulatory criteria.
5.10 Geotechnical and Subsurface Conditions at Pond Site Options
A generalized assessment of the various pond alternatives from Dunkelberger
Engineering & Testing, Inc has been included in Appendix "I" accompanying this
narrative. This report (Letter Report #5) provides an informed opinion as to the
potential subsurface conditions expected along the entire roadway corridor. At
this time the consultant lacked the proper authorization to proceed with soil
borings within the individual parcels identified in this report, however the borings
performed along the entire length of the right of way allowed for some useful and
pertinent conclusions.
In the main, these findings suggest that the various pondsite alternatives
presented for each basin are unlikely to offer significant differences which would
otherwise influence their ranking. However, in the absence of SPT borings within
the proposed pond areas, it is difficult to estimate the subsurface rock conditions.
The rock encountered in the SPT borings along the south side of Golden Gate
Boulevard was highly variable, both in thickness and hardness, and based on the
generalized subsurface profile suggested by these findings, we can assume that
J excavation work at most of the selected pond locations will probably include
Page No. 27
Item # IOF
September 23, 2008
Page 42 of 43
removal of some subsurface caprock. In consideration of the fact that blasting in
- Golden Gate Estates is restricted to right of way work, and that in any case, the
required minimum safe distances from existing homes are unlikely to be met, it is
also safe to assume that extraordinary excavation efforts (i.e. requiring more than
conventional backhoes) will be needed to excavate through the rock in this area.
Page No. 28
Item # 1 OF
September 23, 2008
Page 43 of 43
SECTION 6
CONCLUSION & RECOMMENDATIONS
This report identifies various options for the placement of surface water
management ponds that will subsequently provide water quality treatment and
attenuation for the widening of Golden Gate Boulevard from Wilson Boulevard to
DeSoto Boulevard.
Twenty two (22) potential pond sites comprised of (32) thirty two parcels of
various acreage, have been identified and selected among all the available
properties located along the (6) six mile corridor. Beyond the obvious issues of
market influence and cost which these various options represent, we also note
that delays in land acquisition could alter the land -use conditions and availability
of the identified parcels to accommodate future ponds.
These factors notwithstanding, and based on the available information presented
in this report, and in consideration of the factors discussed therein, the following
options have been identified as desirable targets for acquisition for this roadway
project.
Golden Gate Boulevard ,from Wilson to DeSoto
Firial Pond Options, S616cted 60 Basic(
Basin No.
Final Selected Option No.
1W
Option 1
1E
Option 1
2W
Option 1
2E
Option 1
3W
Option 4
3E
Option 2
4
Option 2
' (Figure No. 6 -1]
Final Pond Options Selected per Basin
Page No. 29