HomeMy WebLinkAbout11 Postpone Water Master Plan Agenda Item #
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Memorandum
To: Board of Dirctors
From: Peter Holzmeister
Date: April 16, 2002
Subject: Agenda Item 11
I request that the Board postpone action on this item for now. My original intent in listing
this item was to seek approval from the Board for the water and electric superintendents
and the water and electric engineers to sign purchase orders and invoices up to $1,000
in value. However, as I began to draft a policy for your consideration I encountered
other problems that need to be addressed at the same time. So, my plan now is to take
a little more time and carefully draft a more inclusive policy for your consideration. This
will come to you first as a workshop item in the very near future.
Historic and Projected Population
Update to Figure 3-1 of 2001 Water Master Plan
25,000
20,000
t Historic Population in Master Plan
-— — Projected Population in Master Plan
----&--Revised Historic Data
15,000 L Revised Projected Population
0
0
a.
10,000
5,000
1978 1983 1988 1993 1998 2003 2008 2013
Year
Historic Water Demand
Update to Figure 3-2 of Water Master Plan
10.0
9.0
i
8.0
—�—Historic Average Day Demand
7.0 —® -Historic Maximum Day Demand -
_ _ _ -
Estimated Maximum Da Demand e
s
r �
6.0
E
c 5.0 j <'
Er
4.0
r�� I
3.0 1
2.0
1.0
Note: Data Does Not Include Glenshire or Donner Lake Areas
0.0
1978 1983 1988 1993 1998
Year
Projected Increase in Water Demand
Update to Figure 3-4 of Water Master Plan
25.0
----Future Average Day Demand- Projection 1
Future Average Day Demand - Projection 2
— — — Estimated Historic Maximum Day Demand
Future Maximum Day Demand - Projection 1
20.0 Future Maximum Day Demand - Projection 2 -
Historic Average Day Demand
---®---Historic Maximum Day Demand
15.0
V
0 Notes:
£ Data Does Not Include Glenshire or Donner Lake Areas.
d '
Projections shown on this graph have not been changed from
E the projections made in the 2001 Master Plan
10.0
Arilk
5.0
0.0
1978 1983 1988 1993 1998 2003 2008 2013 2018
Year
Projected Potable Water Demand vs. Proposed Supply Capacity, 1978 - 2020
Update to Figure 5-3 of Water Master Plan
25.0
— Historic Average Day Demand
--Historic Maximum Day Demand
I
-�-Average Day Demand Projection - -
20.0 -� Maximum Day Demand Projection -- --
I I
I
6
E 15.0 i '
c
m
E
d
o
10.0
Total Supply Capacity Firm Supply Capacity
r-
E
1
J
0.0 + _----- --,-
1978 1983 1988 1993 1998 2003 2008 2013 2018
Year
I
Recommended Water Supply Improvements.
U date to Table 5-5 of Water Master Plan
Maximum Day Total Well Firm Well Notes
Year Demand,m d Capacity,m d Capacity,m d
1990 6.47 6.9 3.6
1991 6.88 6.9 3.6
1992 5.83 6.9 3.6
1993 6.63 6.9 3.6
1994 6.78 6.9 3.6
1995 5.78 T6 4.3 Prosser Annex Well Completed
1996 6.49 7.6 4.3
1997 6.64 7.6 4.3
1998 7.22 8.2 4.9 Glenshire Drive Well Completed'
1999 7.63 8.2 4.9
2000 8.46 8.6 53 Donner Creek Well Capacity Upgrade
2001 8.76 9.9 6.6 Donner Creek Well Converted to Irrigation
Mattis Valley Well Constructed
2002 9.49 9.9 6.6
2003 10.11 129 9.6 New 1,500 gpm Well in Service
Glenshire Well Capacity Upgrade'
2004 10.73 14.2 10.8 New 1,500 gpm Well Constructed
Impact of New Arsenic Regulations
2005 11.36 16.3 13.0 New 1,500 gpm Well Constructed
2006 11.98 16.3 13.0
2007 12.60 16.3 13.0
2008 13.22 18.5 15.2 New 1,500 gpm Well Constructed
2009 13.84 18.5 15.2
2010 14.46 1&5 15.2
2011 15.08 18.5 15.2
2012 15.70 20.6 17.3 New 1,500 gpm Well Constructed
2013 16.32 20.6 17.3
2014 16.95 20.6 17.3
2015 17.57 22.8 19.5 New 1,500 gpm Well Constructed
2016 18.19 22.8 19.5
2017 18.81 22.8 19.5
2018 19.43 22.8 19.5
2019 20.05 24.5 21.2 New 1,500 gpm Well Constructed
2020 20.67 24.5 21.2
Buildoutl 20.96 1 24.5 1 21.2
Note: 1. Current capacity of Glenshire Drive Well is 1,300 gpm. However,the effective capacity is limited to 400
gpm due to inadequate distribution system piping.
2. Assumes Glenshire Drive Well is upgraded to 2,000 gpm. Assumes that 1,000 gpm is dedicated to
Glenshire subdivision with remaining 1,000 dedicated to Truckee System as analyzed in the Master Plan.
3. Assumes that Northside Well capacity is reduced to 500 gpm from 850 gpm and Sanders Well is
removed from potable water service.