HomeMy WebLinkAboutAgenda Statement 1988/08/16 Item 13
COUNCIL AGENDA STATEMENT
CL,: ;forn ia
I tern 13
Dated
ITEM TITLE:
Meeting Date 8/16/88
Resolution I~~]f ~thoriZing Fourth Amendment to
Agreement betw6en City of Chula Vista and JHK & Associates and
appropriating f. unds related t~~~~
Director of Public work~ (~
City Manage~ (4/5ths Vote: Yes X No )
SUBMITTED BY:
REVIEWED BY:
In November 1986, Counci 1 awarded a contract to the fi rm of JHK & Associ ates
to update the circulation element of the General Plan. The original contract
did not include special work tasks to calibrate existing network and validate
land use assumptions for Scenario 4.
RECOMMENDATION: Adopt resolution authorizing the Mayor to execute the
fourth amendment to agreement and appropriate funds in the amount of $42,750
to perform traffic forecasting service from the unappropriated balance of the
Development Impact Fund.
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BOARDS/COMMISSIONS RECOMMENDATION: Not applicable.
DISCUSSION:
During the review of the General Plan update Scenario 4 travel forecast, staff
di scovered some di screpanci es in the 1 and use assumpti ons used to predi ct
future travel. Specifi cally, staff di scovered that forecasted travel on some
existing streets in portions of the developed areas of the City were lower
than what exists today.
This occurred because the existing land uses described in the SANDAG regional
forecast computer model file did not in some cases match actual existing land
developments. To rectify thi s prob1 em, staff proposes to amend the JHK &
Associates contract to include validation of existing land use assumptions and
calibration of the SANDAG computer forecast model. Work to be performed is
described below.
Phase I - $5,000
1.) Verify Exi sti ng Land Use - By usi ng the 1 atest 1 and use data from the
P1 anni ng Department, JHK wi 11 update all Transportati on Ana lysi s Zones
(TAZ) input files of the SANDAG model. All TAZs in the Sphere of
Influence which have existing development will be included in this
revi e\'I. In the Eastern Terri tori es area, JHK wi 11 use the modifi ed TAZ
system for this task.
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Page 2, Item 13
Meeting Date 8/16/88
Veri fy /Create Exi sti ng Hi ghway Network - JHK wi 11 update the exi sti ng
SANOAG highway network to reflect current transportation system
conditions. This will allow JHK to accurately calibrate the network to
Year 1987 traffic counts as supplied by the City.
3.) Perform Calibration Testing - JHK will work with SANDAG staff in the
initiation and analysis of up to 3 (maximum) calibration runs. Each
separate run will require screenline analysis on an areawide basis
initially, and eventually on a quadrant by quadrant basis as required.
2. )
Phase II - $2,000
4.) Verify All TAZ Land Use for Scenario 4 - JHK will review all Scenario 4
TAZs in the Sphere of Influence for land use accuracy. A check of
Scenario 4 versus Existing Conditions will be performed.
Phase III - $750
5.) Draft and Final Report - JHK will prepare a draft and final report for the
City of Chula Vista.
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The City of Chula Vista has appropriated funds to use the SANOAG computer for
Scenari os 1, 2 and 3. It is al so necessary to appropri ate an additi onal
$25,000 for use of the SANDAG computer for Scenario 4 and calibration and for
follow-up computer travel forecasts as requi red for analysi s of the General
Plan Update.
It is al so necessary to appropriate $5,000 for City staff time in connection
with this task plus $5,000 for contingencies. The total additional funding to
cover the consul tant I s increased scope of work ($7,750), the use of SANDAG I S
computer ($25,000), contingencies ($5,000), and staff time ($5,000) amounts to
$42,750.
FISCAL IMPACT: The estimated cost to complete this additional work
including contingencies and staff time is $42,750. The source of funds is the
unappropriated balance of the Development Impact Fund. These funds should be
appropriated into Account 621-6210-E0002 (87/Circulation Element).
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