1980-02-20 - Plan Commission - Agenda • -0
VILLAGE OF "� , BUFFALO GROVE
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AGENDA
BUFFALO GROVE PLAN COMMISSION
REGULAR MEETING
FEBRUARY 20, 1980
7:30 P.M.
I. Call to Order
II. Roll Call
III. Approval of Minutes
IV. Communications
V. Committee and Liaison Reports
A. BDDC
B. Transportation Commission
VI. Matters for Discussion
Citrust/Hilltown Property
VII. Chairman's Report
VIII. Future Agenda Schedule
IX. Public Questions and Comments
X. Staff Report
XI. Adjournment
ale/1/-4J
atrick Shields, Chairman
TO: Plan Commission
FROM: James Truesdell
DATE: February 15, 1980
SUBJECT: CITRUST PROPERTY - ANALYSIS OF DIFFERENCES IN
WATER CONSUMPTION
At the February 20th Plan Commission Meeting, the developers
of the Citrust property will be presenting their response to the
Harland Bartholomew and Associates report and other public input
received at this time. There will also be an opportunity for addi-
tional public comments. Representatives from Harland Bartholomew
and Associates will be present for questioning if necessary.
Recently, there have been differing figures utilized which
attempted to project future water demand in Vernon Township, and more
specifically the Citrust property. At last week' s Plan Commission
meeting, the Village of Long Grove displayed a graphic showing a large
difference in projected water demand between the report by Harland
Bartholomew and Associates and a report by the Lake County Planning
Department. I would like to explain the reasons for this difference.
The first difference resulted in the comparison of figures
derived from different sets of base data. Rather than comparing equal
units, one of the figures depicted water demand from all committed
development plus the Citrust property, while the other figure repre-
sented water demand generated by the total development of Vernon Town-
ship assuming that all land was developed according to current compre-
hensive plans. Obviously when comparing partial development to full
development there will be differing figures.
The second difference is based on the water consumption rates
used in calculating total water demand. In studying other water reports
and in discussions with our engineers, it appears that the generation
rates utilized by the County are inaccurate. The County utilized the
following rates:
130 gallons per capita per day (gpcd) for residential
1 ,000 gallons per acre per day for local commercial
1 ,200 gallons per acre per day for regional commercial
1 ,600 gallons per acre per day for offices
500 gallons per acre per day for institutional uses
2,000 gallons per acre per day for manufacturing uses
According to our information these rates are much too high. Our
figures relate water demand to population equivalents (PE) . This is done
by dividing the area's total water demand (including non-residential) by
the area' s total population. Current figures for Buffalo Grove indicate
a per capita (PE) consumption of 86 gallons per capita per day. Keep in
mind that this figure includes all water consumption including commercial
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CITRUST PROPERTY WATER CONSUMPTION
February 15, 1980
Page 2
institutional , etc. It is anticipated in the Harland Bartholomew and
Associates report that this figure could increase to 105 gallons per
capita per day by 1990, however, this is still far less than the rates
used by the County.
My intent here is not to downplay the need to carefully analyze
water demand, however, I feel it is important to point out that the con-
sumption projected by the County appears to have been overestimated.
JAMES TRUESDELL
Village Planner
JT/ps