Traffic
677 Woodland Square Lp SE
Lacey, WA 98503
p.o Box 3485
Lacey, WA 98509-3485
(360) 493-6002
(888) 493-6002 Toll Free
(360) 493-2476 Fax
"
PROJECT MEMORANDUM
\
DATE.
TO
November 7, 1997
Cathie Carlson, Senior Planner
CityofYelm ~
George Smith, Traffic Analyst
Yelm Center; Senior Assisted L ng ( ongregi3te Care) &
Children's Day-Care Facility
SCA #97110
FROM
SUBJECT
,
Our client proposes construction of Yelm Center on a 10 acre parcel located at Burnett Road
near Yelm Avenue (SR 510) in the City of Yelm The project will house a senior assisted living
facility with a 100-bed capacity, and a 1,000 square foot (sf) children's day-care center~ith an
anticipated 20 child capacity The project access will be located on Burnett Road This
memorandum summarizes the traffic scoping analysis for the proposed project.
Project Trip Generation
The total vehicle traffic expected to use the proposed Yelm Center after completion in 1997 was
calculated using the current edition of the Trip Generation report by the Institute of
Transportation Engineers, (lTE) The trip generation rates used for this analysis are shown in the
following table '
Table 1
,
Trip Generation Rates
,
Trip Rates
Land-Use LU Unit Daily Rate PM Peak % Enter % Exit
(LU) Code Hour
Congregate 252 Occupied 2.15 017 56% 44%
-
Care Facility Dwelling I
, Units
Day Care 565 ,~ 79.?6 1362 I 47% 53%
Center ~ "
f /(~32 O~f.;;Hf4- IJf~
I I
By applying these trip rates to the proposed Yeltri Center we estimated the total traffic expected
to be generated by the project upon its completion in 1997
C I V I L
TRANSPORTATION
PLANNING
SURVEYING
Cathie Carlson
November 7, 1997
Page 3
//S UHtf
/ ~7 3 2. Ifi.
Table 3
" Total "New-to Network" Trip Generation
Land-Use (lU) Daily Trips PM Peak Hour Trips Enter Exit
Nursing Home , 215 ...-'t'f 2.0. 10 7
Day Care Center - 59' t11J~;q 5 6
Total 274 '-2f3-.. 31 15 13
I
Trip Distribution
The vehicle directional distribution to and from the site will be based primarily on
. The area street system characteristics
. Current travel patterns on the area roadways
. The proposed access system for the project, and
. Locations of residential and commercial centers
The Thurston Regional Planning Council (TRPC) has developed a transportation planning model
of Thurston County The distribution element of this traffic model has been calibrated to the
aforementioned criteria. Site traffic wa~ assigned to the area transportation network based on
percentages derived from this information Figure 1 shows,the PM peak hour project traffic
applied to the roadway network.
Conclusions
Based on the traffic scoping analysis described in this memorandum, a Traffic Impact Analysis
(TIA) will not be required for this project. This Scoping Analysis should address the
transportation element of the environmental review process for the project.
Although a TIA will not be requirep for this project, the project proponent will be responsible for a
Transportation Facility Charge (TFC) contribution to the City of Yelm The actual TFC
contribution will be based on the project's new-to-network trips as identified in Table 3 of this
memorandum, and in accordance with the City's TFC ordinance
Thank you for reviewing the enclosed material If you have any questions or need additional
infqrmation, please call me at (360) 493-6002.
GSlct/sw
enc Figure 1
cc George Hom
(f.\text\corres\nov _97\711 On05.scp)
r
C I V I L
TRANSPORTATION
PLANNING
SUR V E Y I N G
-
~11f:;
ENGINEERING
'p-e/( , U
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(t U Lv 'Vuv K'
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ar~
Cathie Carlson
November 7, 1997
Page 2
Table 2
Total Project Trip Generation
Land-Use (LU) Units Daily Trips PM Peak Hour Enter Exit
Trips -
Congregate ~ 215 .4 2/-) 10 7
II CO - -
Care Facility ,
Day Care 1 6 79 - ~'/1 7 7
Center
Total 294 p-r' (t7f1 17 14
,
Pass-By and Diverted Link Traffic
A project such as a Day-Care Center type tends to attract a large amount of traffic from people
already driVing on the are~ roadways These trips are not new trips added to the,local roadways
(primary trips) but represent "pass-by" or "diverted link" (non-primary) trips according to the
following definitions,
Pass-by Trips are trips made as an intermediate stop from an origin to a primary
destination (e g picking your children up on the way home from work) by vehicles
passing directly by the project-driveway
Diverted Link Trips also are made as an intermediate stop between an origin and a
primary destination However, diverted link trips are different in that they require the
driver to make a diversion fr9m original roadway to access the site In the case of this
project, vehicles turning off Yelm Highway onto Burnett Road to visit the project site and
returning in the same direction on Yelm Highway cOQstitute a diverted link trip
The total project trips were reduced by 25% for the Day-Care facility to reflect pass-by and
diverted link interaction Project traffic volumes after this reduction represent the "new-to-
network" trips No trip reduction was assumed for the congregate care facility portion of the
project. The trip reduction used for this study is consistent with information provided in Table 1
of the City of Yelm Concurrency Ordinance The "N,on-Primary" trip totals are shown on the
following table
C I V I L
TRANSPORTATION
PLANNING
-
~11f:;
ENGINEERING
S~RVEYING
PROJECT S\TE
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ri Vc;y
Uc (.
Sf?
.5 ..... ~'........:7 0)
LEGEND
PRIMARY TRIPS
~
XX PM PEAK HOUR VOLUME
XX% PERCEN1 SITE DISTRIBU1\ON
NON-PRIMARY TRIPS
(X) ~UME
(XX%) PERCEN1 Si1E DIS1R\8UlION
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NO" TO
PROJECT TRIP GENERATION
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NON-PRIMARY TRIPS
INBOUND 2
OUTBOUND '\
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TOT AL 3
PRIMARY TRIPS
INBOUND '\ 5
OUTBOUND 13
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10TAl 28
SITE GENERATED TRAFFIC VOLUMES
YELM CEN1ER _ 1RI\FflC SCOPING I\NI\L YS\S
FIGURE
1
97110