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ELB Engineering, LLC.
Transportation Engineering Solutions
Memorandum
TO:
Mr. Bob Patterson, Owner
Mr. Ric Hattman, Hattman Associates
Mr. Joe Olson, PE, City Traffic Engineer
FROM:
Eric L. Bracke, P.E., P.T.O.E
DATE:
September 30, 2008
SUBJECT:
3805 East Vine Drive – Mini Storage/RV Storage: Memorandum TIS
This transportation impact memorandum addresses the proposed Mini-Storage, RV and
Boat Storage Project located at 3805 East Vine Drive in Fort Collins, Colorado. The
project will provide 467 storage units and surface storage for 798 boats and RV’s. Access
to the site is via one driveway onto East Vine Drive. The roadway is under the control of
the City of Fort Collins and is classified as an arterial as defined by the Master Street Plan.
A vicinity map displaying the location of the site and a preliminary site plan are displayed
in Figures 1 and 2, respectfully.
A preliminary review of the project was conducted to determine the scope of the study as
defined under the Larimer County Urban Area Street Standards. Based on the review and
the low trip generation of this particular land use, it was determined that a memorandum
study would suffice for this development. Attachment A, the scoping form, can be found
in Appendix A.
East Vine Drive is a two-lane arterial roadway with a posted speed limit of 45 mph.
Adjacent to the site, the roadway has been improved with auxiliary left turn lanes. The
pavement appears to be in good condition. The roadway was improved several years ago
with the Waterglen development which is located directly north of the project. East Vine
Drive has bike lanes on both sides of the roadway and sidewalks on the north side. Sight
distance at the driveway is adequate.
Surrounding land uses in the immediate area vary. The site is currently in agricultural use
and an industrial use directly to the west of the property. To the north, the residential
development known as Waterglen resides. Waterglen appears to be built-out.
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
1
SITE
Figure 1: Vicinity Map
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
2
Figure 2: Site Plan
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
3
Existing Traffic
Elgin
Recent peak hour turning movements at the intersection of East Vine Drive and Elgin were
conducted during September 2008. The morning and afternoon peak hour traffic counts at
the intersection are displayed in Figures 3. The peak hour counts were conducted in 15
minute increments for the periods of 7:30:8:30 AM and 4:30 – 5:30 PM. The raw
information regarding the turning movements is provided in Appendix B.
E. Vine Drive
6/17
141/199
11/5
13/21
3805 E. Vine
3/10
234/193
North
Figure 3: Existing Peak Hour Traffic (AM/PM)
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
4
Trip Generation
Site generated traffic was estimated using the techniques of the Institute of Transportation
Engineers Trip Generation Manual, 7th Edition. The manual presents trip generation rates
from numerous land use studies from across the Country. However, the manual does not
have a trip generation rate to cover RV and Boat Storage sites. Following discussions with
the Fort Collins traffic engineer and the Larimer County traffic engineer as well as several
other consulting traffic engineers in Northern Colorado, it was agreed that an RV and boat
storage facility produces trip characteristics similar to a mini-warehouse facility (ITE Code
151). It was decided to use Code 151 for the storage units and 60% of the trip generation
rates for the surface parking. It should be noted that this type of facility also has a seasonal
component. During the summer months, the rates would be consistent with Code 151,
while in the winter months, the use is minimal. Table 1 below, displays the trip generation
estimates for the project.
Table 1: Trip Generation Estimate
Daily
Code
Use
units
151 Mini-Warehouse
151 RV/Boat Storage
Reduction for boat storage
TOTAL TRIPS
Units
467.00
798.00
rate
0.28
0.28
467.00
ENTER
rate
trips
131
223
-89
131
0.01
0.01
AM
EXIT
trips
rate
5
8
-3
5
0.01
0.01
PM
ENTER
EXIT
trips
rate
trips
rate
5
8
-3
5
0.02
0.02
9
16
-6
9
0.01
0.01
trips
5
8
-3
5
Background and Site Generated Traffic
The analysis year for the short-term horizon is the Year 2010. A growth projection of 2%
per year for two years was utilized to determine background traffic.
Site generated traffic was added to the background traffic to get the total traffic projection
for the Year 2010. Figure 4 on the following page displays the total traffic scenario
(background plus site generated) for the Year 2010.
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
5
160/210
3/5
3/2
3/2
250/215
2/4
E. Vine Drive
3805 E. Vine
North
Figure 4: Year 2010 Total Traffic (AM/PM)
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
6
Capacity Analysis
Capacity analyses were performed at the key intersection (driveways) to determine if any
deficiencies would occur when the project was implemented. The analyses followed the
procedures of the Highway Capacity Manual 2000. Level of Service (LOS) is a qualitative
term describing operating conditions and expressed in terms of delay. Table 2 below
provides the definitions of LOS for both signalized and unsignalized intersections. Table 3
displays the results of the Year 2010 total traffic scenario. The capacity worksheets from
the analyses can be found in Appendix C.
Table 1
Level of Service Definitions
Level of
Service
Signalized Intersection
Average Total Delay (seconds/vehicle)
Unsignalized Intersection
Average Total Delay (seconds/vehicle)
A
<10
<10
B
C
D
E
>10 and ≤20
>20 and ≤35
>35 and ≤55
>55 and≤ 80
>10 and ≤15
>15 and ≤25
>25 and ≤ 35
>35 and ≤50
F
>80
>50
Table 3 Intersection Capacity Analysis
Year 2010 Total Traffic
Intersection
E. Vine Drive/Project Driveway
STOP sign Control
Movement
WB LEFT
NB LEFT/RIGHT
OVERALL
AM
LOS
A
A
A
Total Traffic - Year 2010
PM
Delay(sec/vehicle)
LOS
7.6
A
10.3
A
0.2
A
Delay(sec/vehicle)
7.6
10.5
0.2
Based on the analysis above, it is concluded that the proposed project will not have a
significant impact on the surrounding roadway system and the key intersection will operate
within the standards set forth by the City of Fort Collins.
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
7
Bike and Pedestrian Facilities
There are currently bike lanes in place on Vine Drive which satisfies the bike LOS
requirements of LUCASS.
On the north side of Vine Drive, sidewalk facilities were constructed with the Waterglenn
project. The project will be required to construct sidewalks along their property frontage.
There are no immediate pedestrians destinations or facilities in the area.
Access to Transit Routes
Transfort does not currently provide transit service to the area. A review of the 2010
transit plan reveals that the City does not intend to provide transit service in this area in the
near-term future.
Conclusion
Based on the analyses of this report, the following can be concluded regarding the
proposed facility located at 3805 East Vine Drive:
• The project is feasible from a traffic engineering perspective
• The project will generate approximately 131 daily trip ends, 10 morning peak ends,
and 14 afternoon peak ends.
• Trip generation is fairly minimal and no perceived safety hazard will exist with the
approval of the project.
• Sight distance is adequate at the proposed driveway.
• A right turn lane into the site is not required and a left turn lane is currently in
place.
• Intersection Level of Service standards is satisfied with the project.
Please let me know if further information is required.
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
8
APPENDIX A
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
9
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
10
APPENDIX B
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
11
Eric L. B racke, P. E., P.T.O .E
ELB Engineering, LLC
5401 Taylor Lane Fort C ollins, C O 80528
(970) 988-7551
T abular S um m ary of Vechicle Counts
25-Sep-2008
Date
Fort Collins
City/T ow n
E ast Vine Driv e/Elgin
Intersection
T im e
Eastbound
Begins
L
W estbound
T
R
L
T otal
T otal
T
R
T otal
Southbound
east/west
L
Northbound
T
R
L
T otal
T otal
T
R
T otal
T otal
north/south
ALL
7:30
2
33
0
35
0
52
0
52
87
2
0
5
7
0
0
0
0
7
94
7:45
1
52
0
53
0
71
1
72
125
6
0
5
11
0
0
0
0
11
136
8:00
1
33
0
34
0
70
2
72
106
3
0
0
3
0
0
0
0
3
109
8:15
2
23
0
25
0
41
0
41
66
0
0
3
3
0
0
0
0
3
69
7:30-8:30
6
141
0
147
0
234
3
237
384
11
0
13
24
0
0
0
0
24
408
PHF
0.69
T im e
Eastbound
Begins
L
0.82
W estbound
T
R
T otal
L
0.55
T otal
T
R
T otal
Southbound
east/west
L
#DIV/0!
Northbound
T
R
L
T otal
T otal
T
R
T otal
T otal
north/south
ALL
4:30
2
52
0
54
0
50
1
51
105
1
0
5
6
0
0
0
0
6
111
4:45
7
49
0
56
0
57
2
59
115
1
0
9
10
0
0
0
0
10
125
5:00
5
48
0
53
0
40
3
43
96
2
0
4
6
0
0
0
0
6
102
5:15
3
50
0
53
0
46
4
50
103
1
0
3
4
0
0
0
0
4
107
17
199
0
216
0
193
10
203
419
5
0
21
26
0
0
0
0
26
445
2:45-3:45
PHF
0.96
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
0.86
0.65
#DIV/0!
1
APPENDIX C
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
1
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
2
ELB Engineering, LLC
5401 Taylor Lane
Fort Collins, CO 80528
Phone: 970-988-7551 | FAX: 970-225-8942
[email protected]
3