CORRESPONDENCE
POST. BUCKLEY, SCHUH &. JERNIGAN. INC.
1665 PAlM BEACH LAKES BI.IIO.
SUITE 500, TOWER B
WEST PAlM BEACH, fLORlDo\ 3340 1
4071689-7175
October 21, 1988
Carmen S. Annunziato~ AICP
City Planner
City of Boynton Beach
200 N. Seacrest Blvd.
P.O. Box 310
Boynton Beach~ Fl 33425-0310
Re: Casa Blanca Apartments of Boynton Beach
Modification to Site Plan Approval
Dea r Ca rmen :
On behalf of the W.O. Brisben Companies, Inc. we hereby request
modification to the previously issued site plan approval of September
21t 1988. Enclosed for your consideration is an application for the
modification along with a check in the amount of $200.00 to serve as payment
for the application fee.
The request for modification is as a result of a condition of the
referenced site plan approval regarding offsite roadway improvementst
more specifically turn lanes into the site on Old Boynton Road and Boynton
Beach Boulevard (SR 804). Following is our justification for the requested
modification:
1. During the September 6~ 1988 Technical Review Board (TRB) meeting~
Lt. Dale S. Hammack verbally commented that turn lanes were needed
on 01 d Boynton Road and SR 804 at the entrances to the si te.
Andy Carl i no of our offi ce then stated that the traffi c study
prepared for the project clearly showed that turn lanes were
not warranted for the Project. Tom Clark~ City Engineer concurred
that the study indicated turn lanes were not warranted.
2. Written comments of the September 6, 1988 TRB, meeting were picked
up at the City1s Planning Office by Jim McManus~ Vice President
of the W.O. Bri sben Company. Thi s set of comments i nc 1 uded the
August 2, 1988 memo from It. Hammack to Jim Gol den t a copy of
which is attached for your convenience. Item 1 refers to Lt.
Hammack1s desire to review the traffic study with respect to
the entrances and exi ts on both Old Boynton Road and Boynton
Beach Blvd. These were the only comments provided to our client
prior to the September 21~ 1988 City Commission meeting.
During the City Commission meeting of September 21, our client
was asked if he would accept conditional site plan approval based
upon acceptance of staff comments. Mr. Md1anus, havi n9 recei ved
no staff comment requiring the construction of offsite turn lanes
on Old Boynton Road or SR 804t agreed.
ENGINEERING. PLANNING · ARCHITECTURE
Upon receipt of your September 27, 1988 letter advising of the
issuance by the City Commission of site plan approval, we
discovered that additional comments were prepared by Lt. Harrmack
and included as a condition of site plan approval, unbeknownst
to our client. As you can imagine, this acceptance of uknown
conditions by our client has caused great amount of concern.
3. In spite of the confusion under which the requirement to construct
offs ite turn 1 anes has occurred, the foundation of our request
for the subject modification to the approved site plan continues
to be the traffi c study prepared for the project. Enclosed for
your further consideration is a copy of the original study which
clearly show that turn lanes on Old Boynton Road and Boynton
Beach Boulevard are not warranted.
In summary, we wish to express our concern for having to
seek this modification for site plan approval since we feel it
is an invalid requirement and has been imposed on our client
without his knowledge. If however, this modification is the
only means to pursue the retraction of this condition to site
plan approval, we will provide further documentation to supplement
the study as is reasonably warranted. Please don't hesitate
to contact our office should you have any questions.
Sincerely,
POST, BUCKLEY, SCHUH & JERNIGAN, INC.
~~
Jeffrey A. Boone
Project Engineer
JAB:ct
cc: Jim McManus
W. Atkinson
14-169.20/001
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.
MEMORA.NDUM
'0
Mr. J. Goldon
DATR
07 September 88
I'lL.
'''0''
Lt. Dale S. Hammack
suaHCT
Casablanca Apartments
As per our discussion at the Technical Review Board meeting of 06 September 1988,
I am recommending the following:
1. Lighting to be photocell activated,
2. Stop sign at north side of tennis court to be moved to
the west side of the dumpster,
3. Right turn lanes provided for entering into the complex
on Old Boynton Road and on We Boynton Beach Bv,
4. Traffic directional arrows on pavement.
5. Comply with Construction Ordinance Section 7.
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Lt. Dale S. Hammack
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MEMORANDUM
TO:
FROM:
Robert E. Barrett# P.E.
Regional Development Manager
Rebecca J. G1auz
Project Engineer
August 16# 1988
Casa Blanca - Staff Comments
DATE:
RE:
The following is in response to the Staff Comments of August 8,
1988 from James J. Golden.
STAFF COMMENT:
The traffic study should address turn lane improvements on
Old Boynton Road.
RESPONSE:
Old Boynton Road is a two-lane roadway that forms aT-intersection
at Casa Blanca#s northeast entrance. The table below shows the P.M.
peak hour turning volumes# which reflects the greatest hourly
volumes occurring at this intersection.
Old Boynton Road RT TH LT
NW Approach 24 271
SE Approach 331 14
Casa Blanca Entrance
SW Approach 7 11
Due to the insignificant amount of turning vehicles during the peak
hour (less than 10% of the thru movements), additional turn lanes
do not appear to be warranted. .
'i3JMLo' 9 ,lJ1ou/.;>
,,~
I. INTRODUCTION
Casa Blanca is a proposed apartment complex of 204 rental units. It
is located on the northwest corner of Boynton Beach Boulevard and
Old Boynton Road. A location map is provided in Figure 1. Directly
south of the project is Leisurevillet an existing PUD. The
entrances to both sites will form a four-leg intersection with
Boynton Beach Blvd. Casa Blanca will also have an entrance from Old
Boynton Road.
II. TRIP GENERATION AND DISTRIBUTION
The trip generation rates for the project were obtained from the ITE
Trip Generation Manual t 4th Edition. For rental apartmentst the
equation used produced It259 average daily trips. The P.M. peak
hour generated 139 tripst while the A.M. peak hour generated 106
trips.
The distribution of traffic is based on the extent of existing
shopping opportunities and employment locations within relative
proximity to the site. Figure 2 shows the directional distribution
on major roadways within the study area. The background traffic on
Boynton Beach Blvd. t Old Boynton Road, and Leisureville Blvd. was
obtained from peak season 1988 traffic counts.
- 1 -
III. DRIVEWAY ANALYSIS
The northeast project entrance and Old Boynton Road was analyzed as
an unsignalized intersection. The peak hour volumes are shown in
Figure 3. The intersection was analyzed using the Highway Capacity
Software program which is based on the 1985 Highway Capacity Manual.
The results of the study are shown in Appendix A. The right turns
out of the project and the left turns into the project for both A.M.
and P.M. peak hours result in a Level Of Service "A". The left
turns out of the project during the A.M. peak hour produces a LOS
"C", while the P.M. peak hour produces a LOS "B".
Figure 4 shows the peak hour volumes for Boynton Beach Blvd.,
Leisureville Blvd. and the project entrance. Because of the large
traffic volumes and number of lanes on Boynton Beach Blvd., it was
not feasible to run the unsignalized intersection analysis.
Additionally, b~cause Leisureville Blvd. and the Casa Blanca
entrance will not act as a thru-street, it does not represent a true
4-leg intersection. Therefore, a detailed analysis supplemented by
field research was conducted to determine actual and acceptable
critical gaps. A study of the maximum 15 minute rate of flow within
the P.M. peak hour was conducted at Leisureville Blvd. and Boynton
Beach Blvd., during which sixteen gaps of 7 seconds or longer were
found. This results in over one gap per minute. The Highway
Capacity Manual provides a range of critical gap values of from 5
- 2 -
to 8.5 seconds, depending on the type of turning movement. For the
purpose of this analysis, one gap per minute of 7 seconds or greater
is considered acceptable. The field data, as shown in Appendix B,
meets these requirements.
IV. CONCLUSION
As stated above, the intersection of Old Boynton Road and the
project entrance operates at an acceptable level of service for the
A.M. and P.M. peak hours. Additionally, field studies conducted at
Boynton Beach Blvd. and leisureville Blvd. show that the traffic
conditions will provide safe ingress and egress from the project's
south entrance.
- 3 -
1985 HCM: UNSIGNAlIZED INTERSECTIONS Page-l
*********************************************************************
IDENTIFYING INFORMATION
AVERAGE RUNNING SPEED, MAJOR STREET.............. 35
PEAK HOUR FACTOR................................. . 9
AREA POPUlATION.................................. 250000
NAME OF THE EAST/WEST STREET..................... OLD BOYNTON ROAD
NAME OF THE NORTH/SOUTH STREET................... PROJECT'S NE ENTRANCE
NAME OF THE ANALyST.............................. GLAUZ
DATE OF THE ANALYSIS (mm/dd/yy).................. 07/13/88
TIME PERIOD ANALyZED............................. A.M. PEAK HOUR
OTHER INFORMATION:
INTERSECTION TYPE AND CONTROL
INTERSECTION TYPE: T-INTERSECTION
MAJOR STREET DIRECTION: EAST/WEST
CONTROL TYPE ~mRnm()mm: STOP SIGN
TRAFFIC VOLU~IES
--------------.---------------------------.------------.------------------
EB UB NB SB
----
LEFT 0 271 22
THRU 331 3 0
RIGHT to- O 13
.J
HUMBER OF lAl~ES
----------------------------------------------------------.-----------
LANES
EB un N8 S8
-------- ------- ------- --~-----
1 1 2
1985 HeM: UNSIGNALIZED INTERSECTIONS Page-l
*********************************************************************
IDENTIFYING INFORMATION
AVERAGE RUNNING SPEED, MAJOR STREET.............. 35
PEAK HOUR FACTOR................................. .9
AREA POPULATION.................................. 250000
NAME OF THE EAST/WEST STREET..................... OLD BOYNTON ROAD
NAME OF THE NORTH/SOUTH STREET................... PROJECT'S NE ENTRANCE
NAME OF THE ANALyST.............................. GLAUZ
DATE OF THE ANALYSIS (mm/dd/yy).................. 07/13/88
TIME PERIOD ANALyZED............................. P.M. PEAK HOUR
OTHER INFORMATION:
INTERSECTION TYPE AND CONTROL
INTERSECTION TYPE: T-INTERSECTION
MAJOR STREET DIRECTION: EAST/WEST
CONTROL TYPE NORTHBOUND: STOP SIGN
TRAFFIC VOLlJt1ES
EB WB tm SB
LEFT 0 14 11
HIRU 271 331 0
RIGHT 24 0 7
NUMBER OF LANES
EB WEe NB SB
...------ ----~.._- ------.... -------
LANES 1 1 2
ADJUSTMENT FACTORS
Page-.2
PERCENT RIGHT TURN CURB RADIUS (ft) ACCELERATION LANE
GRADE ANGLE FOR RIGHT TURNS FOR RIGHT TURNS
EASTBOUND 0.00
WESTBOUND 0.00
NORTHBOUND 0.00
SOUHlDomm
90
90
,~o
90
20
20
~I
N
N
VEHICLE COMPOSITION
EASTBOUND
WESTBOUND
NORTHBOUND
SOUTHBOUND
" SU TI~UCKS " COMBINATION
AND I:;;V'S VEHICLES % MOTOr~CYCLES
....--------....- ----..-----....--- --....--...--....----
0 0 0
0 0 0
0 0 0
Cf~ITICAL GAPS
TABlJLAI~ VALUES ADJUSTED SIGHT DIST. FINAL
<Table 10--2) VALUE ADJUSH1EtH Cr<ITICAL GAP
--....---....-.-....---- ------........ ----------- ----------..--
MHIOR RIGHTS
NB 5.70 5.20 0.00 5.20
11AJOR LEFTS
WB 5.10 4.E.0 0.00 4.60
MIUOR LEFTS
1m E.. 80 6.30 0.00 E.. 30
CAPACITY AND LEVEL-OF-SERVICE p~, 9 f~--3
-..---------------------------------------------------------_._----~.----
POTEU- ACTUAL
rLOW- nAL MOVEt'IENT SHARED RESERVE
RrHE CAPACITY UiPAC I TY CAPACITY Cf.lPAClrY
I'IOVEt1nn v(pcph) c (peph) c (peph) c (pept.) c - c - v LOS
P M SH R SH
---..-.---- ------...- -------.--- ------------ ------..-....----
1'1 I NOR STREET
NB LEFT 27 382 272 2"12 2'1~; C
RIGHT 16 823 823 823 807 A
/'IAJOR. STF:EET
WB LEFT 3:H 925 '325 925 594 A
I
CAPACITY AND LEVEL-OF-SERVICE Pa!].~-3
------------------------------------------------.-----_._---~------------
POTEt4- ACTUAL
FLOW- TIAL MOVEI'1ENT SHARED RESERVE
RATE CI~PAC I TY CAPACITY CAPI:;CITY CAP~)CIrY
MOVEMENT v(pcph) c (pc ph) c (pcph) c (pcph) c - c - v LOB
p M SH R SH
-------- ---..----- ---....----- ----------.-.- ------------
MINOR STREET
NB LEFT 13 369 365 365 351 B
RIGHT 9 876 876 876 86B A
MAJOR STREET
WB LEFT 17 969 969 969 952 A
APPENDIX B
._.~.._----~ - _._.._.~-~---_...., ~---,._---_.~-_. - ~--_.__.. -.
CRITICAL GAP FIELD DATA
GAPS (IN SEC) OCCURING PER MINUTE
TIME 1 2 3 4
4:00 10 7
4:01 2
4:02 10 8 3
4:03 4 13
4:04 6 9
4:05 3 11 6
4:06 7 3 4 5
4:07 5 14 3
4:08 4 8
4:09 3 10
4: 10 7 4 5 4
4:11 7 3
4:12 6 5 7
4:13 5 4 8
4:14 7 3
/
MEMORANDUM
Golden
Lt. Dale S. Hammack
DATE
2 August 88
,Il.'
auaneT
Casa Blanca Apt's.
As per our discussion at the Technical Review Board Meeting,
1. Review of traffic study on entrances and exits of traffic both on
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I am recommending the following:
Boynton Beach Bv and Old Boynton Road.
2. Sidewalks at entrances.
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