20070522UWI to Staff 1-6.pdf

McDevitt & Miller LLP
Lawyers
[phone]
[phone] (Fax)
420 W. Bannock Street
, ,\ .
(.~L
\ ~ \
\: L~ '
O. Box 2564-83701 ;'j Ii:
Boise, Idaho 83702
" , ,: "
:.J;
' ..\;.., ,
;' - " i,
Chas. F. McDevitt
Dean J. (Joe) Miller
May 22~ 2007
Via Hand Delivery
Jean Jewell, Secretary
Idaho Public Utilities Commission
472 W. Washington St.
Boise, Idaho 83720
Re: Case No. UWI~ W -07 ~
Dear Ms. Jewell:
Enclosed for filing in the above matter please find three (3) copies of United Water Idaho
Response to IPUC Staff's Production Requests.
An additional copy of the document and this letter is included for return to me with your file
stamp thereon.
Very Truly Yours
cDevitt
ean iller
DJMlhh
Attach.
Dean J. Miller (ISB No. 1968)
McDEVITT & MILLER LLP
420 West Bannock Street
O. BOX 2564-83701
Boise, Idaho 83702
Tel: [phone]
Fax: [phone]
i oe(Q),mcdevitt - miller .co m
i ,.
d;'~~2 fl ; !:l
, . i . .: i c'
: I:::. i='-'
,,'
.J:~'
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF THE APPLICATION
OF UNITED WATER IDAHO INC., TO
AMEND AND REVISE CERTIFICATE OF
CONVENIENCE AND NECESSITY NO 143
TO INCLUDE BRITT ANIA HEIGHTS
CASE NO. UWI-07-
UNITED WATER IDAHO INC.S RESPONSE TO
IPUC STAFF'S PRODUCTION REQUESTS
ORIGiNAL
United Water Idaho
Case UWI-O7-
Response to IPUC Staff Production Request
First Production Request
Response to Request No.
Preparer: Greg Wyatt
Company Witness: Greg Wyatt
Request No.1: Please provide an estimate ofthe number and type oflots proposed to be
served in each of the Brittania Heights I and Brittania Heights II subdivisions.
Response:
Both Brittania Heights I and II are residential lot subdivisions. Phase I is designed for
approximately 34 lots and Phase II is designed for approximately 105 lots.
United Water Idaho
Case UWI-O7-
Response to IPUC Staff Production Request
First Production Request
Response to Request No.
Preparer: Greg Wyatt
Company Witness: Greg Wyatt
Request No.2: Please indicate whether an alternate source will be used for lawn
watering in the subdivisions, or whether United Water will be relied on to provide
irrigation water.
Response:
Lawn watering in the Brittania subdivisions is being provided by an alternate irrigation
source other than from United Water.
United Water Idaho
Case UWI-O7-
Response to IPUC Staff Production Request
First Production Request
Response to Request No.
Preparer: Scott Rhead
Company Witness: Scott Rhead
Request No.3: Please indicate the source(s) that will be used to supply water for the
subdivisions and provide any calculations or other analysis to show that United Water has
sufficient water to meet the requirements of the subdivisions. Will the developer be
required to contribute any source of supply?
Response:
Source of supply for the Brittania Heights Subdivisions will come from two wells located
in the Belmont Heights Subdivision. Both domestic and fire protection will be provided
from these wells.
Please refer to the attached letter and information provided to the Idaho Department of
Environmental Quality as the necessary calculations to support the subdivisions without
any additional new water supply. Under United Water Rules and Regulations for main
extensions developers do not contribute source of supply. Accordingly, the developer of
the Brittania Heights Subdivisions will not be required to contribute any source of supply.
DANIEL BROWN
Senior Project Engineer o~~.United Water..s~ezUNITED WATER IDAHO INC.
8248 West Victory Road, Boise, ID 83709
O. Box 190420, Boise, 1083719-0420
Tel: [phone]. Fax: [phone]
dan. brown~un itedwater .com
April 13 , 2007
Mr. Mark Mason , P.
Engineering Manager
State of Idaho
Department of Environmental Quality
1410 North Hilton
Boise , Idaho 83706-1255
Re: Brittania Subdivision
Dear Mr. Mason:
Phase 1 of Brittania Subdivision is a 34 lot development generally located on the
west side of McDermott Road and approximately 1800 feet south of Powerline
Road. Future phases will bring the total number of lots served to 139. Water
service will be provided through a 12-inch main extension from the Belmont
Water System.
We are hereby submitting current operating and equipment data, which
demonstrate the capacity of the Belmont Water System to support the addition of
Brittania Subdivision.
Operating data for July 10, 2006 shows the peak day usage of 64 000 gallons.
This was for 74 active customers, resulting in 865 gallons per customer (irrigation
water is available from a separate pressurized system). This equals an average of
601 gallons per minute over 24 hours. Data is not available for peak hour
demand , but using a factor of 2., peak hoar becomes approximately 1.202
gallons per minute. Typically, for a large system, we expect a factor of about 1.
however, in a small system like Belmont a factor of 2.0 is more appropriate. This
exceeds the peak hour demand quoted in the original Belmont Water System
engineering report, dated August 16, 2001 , for maximum instantaneous demands
without irrigation (see page 5), indicating some irrigation usage from the
customers is likely.
The domestic supply pump is designed to produce 350 gallons per minute. The
engineering report anticipated a 300 gpm pump and peak hour demand of 1.500
gpm, resulting in 200 residential customers serviceable from the Belmont Water
WWW.UNlTEDWATER.COM
. ,
Mr. Mark Mason
Page 2
System. With the actual 350 gpm pump capacity and a somewhat lower peak
hour demand of 1,202 gallons per minute per customer, the maximum number of
customers to be served from this pumping unit is 291. This should be the
maximum number of customers to be served from this system until additional
pumping capacity is installed.
The current number of platted lots approved for service in the Belmont and
Lexington Meadows subdivisions is 110. Brittania Subdivision includes 139 lots
for all phases, bringing the total to 249 lots, which is serviceable from the
Selmont Water System as noted above. Thus, with the addition of this project,
the uncommitted capacity of the domestic source of supply is 42 lots.
In addition , the Belmont domestic well is currently in violation of the uranium
MCL and has been under Public Notification status since March 2006.
Consequently, we have requested the developer to notify lot buyers of the uranium
issue by providing them with copies of Untied Water s Consumer Confidence
Report (CCR) prior to closing. Please see the enclosed letter.
We appreciate your review and consideration of the above information and trust it
addresses your concerns. Please don t hesitate to call if you have any questions
regarding this matter.
, ":,.
Daniel Brown, P.
c: Scott Rhead, UWID
John Lee , UWI D
ANALYSIS OF FIRE FLOW AVAILABILITY TO PROPOSED
BRITTANIA SUBDIVISION FROM THE BELMONT WELL
Adequate fire flow capacity to meet the needs of Britannia Subdivision
appears to be available from the Belmont Well water supply, as determined
from the following analysis.
EXISTING FIRE FLOW TEST RESULTS FOR LEXINGTON MEADOWS
The most recent fire flow test, from the Belmont Well , was conducted at the
fire hydrant located at Lot 22/BI 1 of Lexington Meadows Subdivision on
August 8, 2006, following the upgrade of the Belmont Fire Pump.
The results of that test were:
Static Pressure: 70 psi
Observed Flow: 1 688 gpm
Residual Pressure: 25 psi
The elevation of the fire hydrant is approximately 2 630 feet, resulting in a
hydraulic gradient line (HGL) of 2 688 feet at a flow of 1 688 gpm:
. 2 630 + 25 X 2.31 = 2,688 feet
The frictional head loss for this flow is estimated at 92 feet from the tee in
Hastings to the fire hydrant.
HI in 2 020 ft of 8"
(g)
688 gpm = 85 ft
HI in 1 240 ft of 12"
(g)
688 gpm = 7 ft
This indicates the HGL at the tee in Hastings is 2 780 feet, with a flow of
688 gpm,
PROJECTED FIRE FLOW AVAilABILITY TO THE PROPOSED BRITANNIA
SUBDIVISION
The frictional head loss for 1 688 gpm between the tee in Hastings to the
fire hydrant located at Mountain Pine and Eagle Cr is estimated at 36 feet.
HI i n 215 ft of 8"
(g)
688 gp m = 9 ft
HI in 4,575 ft of 12"
(g)
688 gpm = 27 ft
This results in a HGL at the Mountain Pine and Eagle Creek fire hydrant of
744 feet:
. HGL (qI Mountain Pine & Eagle Creek = 2 780 - 36 = 2,744 feet.
The elevation of this fire hydrant in Britannia is 2 607 feet leading to a
residual pressure of 137 feet , 59 psi:
. 2 744 - 2 607 = 137 feet =). 137 /2.31 = 59 psi
CONCLUSIONS
As a result of the above analysis, it appears that adequate fire flow should
be available to the Britannia Subdivision from the Belmont Well water
supply without further modifications to the existing system or the addition
of a new water supply source.
United Water Idaho
Case UWI-O7-
Response to IPUC Staff Production Request
First Production Request
Response to Request No.
Preparer: Scott Rhead
Company Witness: Scott Rhead
Request No.4: Please list any off-site mains or other facilities that will need to be
installed in order to provide service to the subdivisions.
Response:
The Brittania Heights Subdivisions will be served by extending a 12-inch off-site water
main approximately 3 425 feet (1,580 feet Powerline Road, 1 845 feet McDermott Road).
No other off-site facilities will need to be installed to provide service other than the
associated 12-inch isolation valves. These off-site facilities will be contributed by the
developer.
United Water Idaho
Case UWI-O7-
Response to IPUC Staff Production Request
First Production Request
Response to Request No.
Preparer: Greg Wyatt
Company Witness: Greg Wyatt
Request No.5: Please list generally those facilities that will be contributed by the
developer and any facilities that will be advanced. If any facilities will be advanced
please describe the refunding provisions.
Response:
Generally, the facilities to be contributed to United Water by the developer include the
offsite and onsite mains, valves, services, and fire hydrants as required by United Water
Rules and Regulations. United Water will provide the meter for each service, pursuant to
its Rules and Regulations. No facilities are proposed to be advanced to United Water for
the Brittania Heights I and II subdivisions.
United Water Idaho
Case UWI - W -07-
Response to IPUC Staff Production Request
First Production Request
Response to Request No.
Preparer: Greg Wyatt
Company Witness: Greg Wyatt
Request No.6: Will there be a special facilities agreement for the subdivisions? If so
please provide a copy.
Response:
There are not any special facilities required to serve the subdivisions and accordingly
there will be no Special Facilities Agreement for the subdivisions.
DATED this ~ay of May, 2007.
UNITED WATER IDAHO INC.
~A Wt-.Dean J. MIller
Attorney for United Water Inc
CERTIFICATE OF SERVICE
I hereby certify that on the da-rdtay of May, 2007 , I caused to be served, via the
methodes) indicated below, true and correct copies of the foregoing document, upon:
Jean Jewell, Secretary
Idaho Public Utilities Commission
472 West Washington Street
O. Box 83720
Boise, ID 83720-0074
i i ewell~puc. state. id. us
Hand Delivered
S. Mail '-8
Fax '-8
Fed. Express '-8
Email '-8