07/13/1976 - Packet r
r
TIGARD WATER DISTRICT 91341 S. W. COMMERCIAL ST.
TIGARD, OREGON 97223
PHONE (503) 639-1554
July 13, 1976
AGENDA
CALL TO ORDER
1. RESOLUTION TO APPROVE MINUTES OF LAST MEETING
2. VISITORS
3. RESOLUTION TO PAY VOUCHERS
4. RESOLUTION TO APPROVE THE LOWEST, ACCEPTABLE BID
TO EXCAVATE AND REMOVE APPROXIMATELY 60,200 CUBIC
YARDS OF SOIL IN PREPARATION FOR CONSTRUCTION OF
10-MILLION GALLON SUBSURFACE RESERVOIR LOCATED AT
' ' S. W. 125TH AVENUE AND BULL MOUNTAIN ROAD
5. RESOLUTION TO TRANSFER THE DISTRICT'S WATER RIGHTS
TO 2,500 ACRE-FEET OF SCOGGIN DAM IMPOUNDMENT TO
THE HILLSBORO - FOREST GROVE JOINT WATER COMMISSION
6. RESOLUTION TO AUTHORIZE MR. R. C. NEWCOMB, CON-
SULTING GEOLOGIST, TO CONDUCT A GROUND WATER STUDY
AND DEEP WELL DEVELOPMENT PLAN FOR THE TRIANGULAR
AREA FORMED BY TIGARD, WILSONVILLE, AND NEWBERG
7. OTHER BUSINESS
ADJOURNMENT
ADMINISTRATOR'S REPORT
1. Resolution to approve minutes of last meeting.
2. Visitors.
3. Resolution to pay vouchers.
4. Resolution to approve the lowest, acceptable bid to excavate
and remove approximately 60,200 cubic yards of soil in preparation
for construction of 10-million gallon subsurface reservoir located,
at S. W. 125th and Bull Mountain Road.
Invitations for bids for the excavation portion of the 10-MG
reservoir were published in the Daily Journal of Commerce as shown
below:
14th,. ti
'i
time and date. Bids received after the
TIGARD time fixed for opening will not be con-
WATERBid DISTRICT con-
sidered.
security in the amount of 10%will
EXCAVATION FOR 10-MG RESER- berequired lnaccordance with lnstrtic-
VOIR tions to Bidders.
Rids due at 7:30 p.m.July 13. One Set of Drawings,Specifications.
INVITATION TO BID and,Forms of Contract Documents may
Written sealed bids will be received be obtained at the District office.
by the Board of Commissioners,Tigard Bidders shall comply with Chapter
Water ,District. Washington County, 279, ORS,'as well as any changes and
Oregon,until 7:30 p.m.,PDT,Tuesday, amendments thereto. Bidders shall
July 13, 1976, for furnishing all labor prequalify in accordance with said
and equipment to excavate for a 10-MG chapter prior to submission of bids.
subsurface reservoir to be constructed The Board of Commissioners,Tigard
pear S.W. 125th and Bull Mountain Water District, reserves the right to
Road, reject any or all bids and to waive all
In general the work will consist of ex- informalities.
cavation and removal of approximately ROBERT E. SANTEE,
60,200:cubic Ira of soil, installation of Administrator/En meer
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Akiow
ADMINISTRATOR'S REPORT (Continued)
The acceptance of the bid is contingent upon receiving
approval for "conditional use" by Washington County on July 28th
and exercising the district's option to purchase the 2.5 acres
of land from Mrs. Ames for $50,000.
If all goes well, the first shovel of dirt should be turned
on August 2nd. Hopefully, excavation will be finished within 60
days, and reservoir construction started on October 4th.
A cost estimate for the excavation would be in excess of
$100,000, using a figure of $1.67 per cubic yard of dirt.
5. Resolution to transfer the district's water rights to 2,500
acre-feet of Scoggin Dam impoundment to the Hillsboro - Forest
Grove Joint Water Commission.
In response to my letter to the City of Beaverton and Wolf
Creek Highway Water District, Mr. Elden Mills, Manager, City of
Hillsboro, expressed the opinion that the Hillsboro - Forest Grove
Joint Water Commission would be very much interested in acquiring
the district's rights to 2,500 acre-feet of water at Scoggin Dam.
(See enclosed letters) .
With the limited quantity of M&I water available from this
source I cannot foresee, under any circumstances, where Tigard
Water District would benefit by retaining this water right and
the inherent liabilities thereof. As a practical matter, it
would be a foolish venture to become part owner of a treatment
plant, at great expense, knowing that there is insufficient water
to meet the long range needs of the district.
In accordance with Mr. Mill's letter, if and when a main is
constructed from the dam site (treatment plant) to other water
districts and cities, they, too, can enjoy this source of water.
Obviously, this would be on a surplus water sale arrangement.
The following paragraphs from the last auditor's report
(June 30, 1975) are quoted:
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sari
, .
TIGARD WATER DISTRICT
NOTES TO FINANCIAL STATEMENTS, Continued
9. Commitments and Contingencies :
In 1971 the District signed a contract with the United States
Department of the Interior, Bureau of Reclamation, under which
the District is obligated to provide 17 . 06'3 of the costs of
construction (specifically alienated to municipal and industrial
uses ) of t-ho Tualatin Federal Reclamation Project (Scoggins Dam
and Reservoir) , plus 3 . 5?; interest during cnnstruction For the
ricfht_ to divos7t up to 2 , 500 acre feet of project water annually
available. The Purenu of Reclamation has currently estimated
this construction charge obligation at $050 , 960 , plus interest
during construction.
The construction charge obligation is payable by the District in
4oir fifty successive equal annual installments commencing December 31 ,
1906 if no water is diverted by the District during the ten
calendar years prior to calendar year 1906 . It a portion of the
water to he provided 1111(101" the contract is diverted during the
afnrementioned ten calendar year period, the annual construction
charge installment shall hecTin on December 31 of that year. In
such instances the amount of the annual construction charge
installment shall be in the ratio that the acre feet of water
diverted hears to the total acre feet (2, 500) provided under
the contract and will continuo for 50 years for such block of
water. Effective December 31, 1906 , the construction charge
installment shall he increased to include all of the remaining
water not covered by the installments which were begun upon
•
earlier diversions.
In addition, beginning January 1, 1976, the District is obligated
to pay its share of the Deoggins Dam and. Reservoir annual
operating and maintenance costs . The District' s share of annual
operating and maintenance costs for calendar year 1976 is ',:2 , 255.
ADMINISTRATOR'S REPORT (Continued)
Actual costs to the district for 1976 amounted to $2,255,
all of which will be reimbursed by the commission according to
Mr. Mills.
I have been concerned about this liability for some time
and the fact that the district must pay for 2,500 acre-feet of
water per year commencing in nine (9) years whether the water
is consumed or not. This liability continues for 40 years
thereafter. The amount is estimated to be $32,600 annually.
I believe the district has done its share in supporting
the Scoggin Dam project and was willing to stand up and be
counted when purchasers of M&I water were sorely needed to en-
hance the possibility of dam construction. Further studies have
revealed that Tigard Water District cannot utilize this water
and, therefore, should withdraw from this commitment as soon as
possible.
The conditions for the transfer of these water rights as
described by Mr. Mills appear fair and reasonable.
mow
6. Resolution to authorize Mr. R.C. Newcomb, Consulting Geologist,
to conduct a ground water study and deep well development plan for
the triangular area formed by Tigard, Wilsonville, and Newberg.
Enclosed are letters from Mr. R. C. Newcomb, Consulting
Geologist, and ST&R regarding availability of well water in the
Tigard area.
Mr. Newcomb's letter of June 15th discourages a well site at
Baylor Reservoir, S. W. 66th and Baylor Street. I believe it best
to heed his warning and not pursue this course of action.
Site #1, located near S. W. Greenburg and Cascade Avenue,
remains a possibility, but the cost may be too high for the risk
involved. The Oregon State Health Division requires that all
land within 100 feet of a well shall be legally controlled by the
water system owner. Therefore, a parcel of land 200' x 200' or
about one acre must be purchased. With land in this industrial
area valued at $40,000 per acre, the district could very well
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ADMINISTRATOR'S REPORT (Continued)
expend $100,000 on the project without any assurance of a good
producing well.
We must again go back to the drawing board and review our
objectives. Of particular importance is our long-range goals.
If we assume that the district's future for sufficient water lies
to the south, our efforts should be guided in that direction.
Also, one must not forget that our contract with the City of Port-
land expires on June 30, 1978, two years from now. We must take
the necessary steps to improve our position.
Site #1 is located to the north and a well site at that loca-
tion would not contribute to the achievement of our ultimate goal
for the long-term.
Initial reports on potential well sites to the south are not
encouraging and should be examined in depth before proceeding in
that direction. It is recommended that Mr. Newcomb be retained
to make this investigative study which is estimated to cost $1600.
The concept of drilling wells at regular intervals to the
south and connecting them with a 36-inch main appears to have
merit. Thus, the district could "walk" its way to the Willamette
River without immediate large expenditures of funds. All is
dependent, however, whether ground water is reasonably available
along any route to the Willamette River.
7. Other business.
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ir' ADMINISTRATOR'S REPORT (Continued)
8. Unmetered water.
Pumped Purchased Total Sold Loss
Month 6. Cu. Ft. Cu. Ft. Cu. Ft. Cu. Ft. Cu. Ft. Loss
Year x 1000 x 1000 x 1000 x 1000 x 1000 7.
June 1976 3,014 *6,776 (L.0.) 9,791 7,184 2,607 26.6%
1 (Port)
Cumulative Totals
FY 1975-76
(12 months)
37,874 58,274** 96,148 89,064 7,084 7.4%
* 69.2% of water consumed during June 1976 was purchased from either
Lake Oswego or Portland.
44.9
** 60.6% of water consumed during FY 1975-76 was purchased from either
Lake Oswego or Portland.
Summary of past and present years
Percentage of water purchased from Lake Oswego or Portland:
FY 1973-74: 52%
FY 1974-75: 60%
FY 1975-76: 61%
Summary of water losses:
FY 1972-73: 18.3%
FY 1973-74: 11.1%
FY 1974-75: 16.2%
FY 1975-76: 7.4%
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ADMINISTRATOR'S REPORT(Continued)
9. Water pumped from wells, Calendar Year 1976.
Month Actual *Actual Allocation/Month
1976 Cubic Feet Acre-Feet Acre-Feet
Jan 3,131,250 71.9 88
Feb 2,948,530 67.7 88
Mar 3,212,670 73.7 88
Apr 3,119,030 71.6 88
May 3,114,860 71.5 88
Jun 3,013,940 69.2 88
Total: 18,540,280 425.6 528
* 1 acre-foot = 43,560 cubic feet
Actually pumped in prior years: 1970: 1,616 acre-feet
1971: 1,418 " "
1972: 1,501 " "
1973: 1,269 " "
ffIW 1974: 924 " "
1975: 930 " "
10. Percentage of Bull Run water purchased for computing amount
due for System Development Charge.
Month & Well Lake Oswego Portland Total %
Year Cu. Ft. Cu. Ft. Cu. Ft. Cu. Ft. Bull Run
Oct 1975 3,165,790 4,140,600 100 7,306,490 0.00136%
Nov 1975 3,081,440 2,949,600 300 6,031,340 0.00497%
Dec 1975 2,820,770 4,365,700 200 7,186,670 0.00278%
Jan 1976 3,131,250 3,581,000 100 6,712,350 0.00148%
Feb 1976 2,948,530 3,258,600 300 6,207,430 0.00483%
Mar 1976 3,212,670 3,455,800 100 6,668,570 0.00150%
Apr 1976 3,119,030 3,534,900 100 6,654,030 0.00150%
May 1976 3,114,860 4,523,500 2,700 7,641,060 0.03533%
Jun 1976 3,013,940 6,776,100 100 9,790,140 0.00102%
Total: 27,608,280 36,585,800 4,000 64,198,080 0.00623%
or about 2/3 of 1/100 of 1%
-7-
ADMINISTRATOR'S REPORT (Continued)
11. Work accomplished during June 1976.
a. TWD installed 350 feet of 6" D.I. pipe + 2 fire hydrants
near S. W. 98th Avenue, south of Greenburg Road, to serve 16
duplexes to be constructed by G. Carpenter. (Developer's).
b. TWD painted reservoir #3 located at 135th and Fern St.
c. TWD inventoried all material and fixed assets on 30 June
1976.
d. TWD serviced all equipment and cleaned yard and shop area.
e. TWD installed 31 meters. (4713 - 4743). District also
serves 48 meters in Metzger Water District. Total: 4791.
wiry
12. Work to be accomplished during remainder of Calendar Year 1976.
July 1976:
a. TWD install 400 feet of 12" D.I. pipe along Pacific High-
way and 250 feet of 6" D.I. pipe along S. W. Hall Blvd. to complete
circulation loop.
b. TWD install 450 feet of 12" D.I. pipe along S. W. Durham
Road, 92nd Avenue to Alderbrook Drive (Summerfield), to complete
circulation loop to Tigard High School.
c. TWD install 1100 feet of 8" D.I. pipe + 1 fire hydrant
along S. W. 113th Avenue, south of Durham Road, to complete circu-
lation loop.
d. TWD install pressure-reducing valve in concrete vault in
8" main and 850 feet of 8" D.I. pipe + 1 fire hydrant along S. W.
133rd Avenue, south of Bull Mountain Road, to relieve high pressure
and replace 4" O.D. steel pipe.
-8-
ADMINISTRATOR'S REPORT (Continued)
August 1976:
a. TWD install 980 feet of 8" D.I. pipe, 2700 feet of 6"
A.I. pipe, and 250 feet of 4" D.I. pipe + 6 fire hydrants for
ENGLEWOOD III for Commonwealth, Inc. (76 single family home
sites). (Developer's).
b. TWD or private contractor install 535 feet of 12" D.I.
pipe, 5,085 feet of 8" D.I. pipe, 1,344 feet of 6" D.I. pipe,
and 960 feet of 4" D.I. pipe + 11 fire hydrants for SUMMERFIELD,
Phase IV, for Tualatin Development Company, Inc. (169 single
family dwellings). (Developer's).
c. Private contractor commence excavating for 10-MG reser-
voir located at S. W. 125th Avenue and Bull Mountain Road.
(60,200 cubic yards of dirt to be removed).
*sr September 1976:
a. TWD install anti-surge and pressure-reducing valve with
manifold in concrete vault at 132nd Street pump station.
b. TWD install 1100 feet of 12" D.I. pipe and 400 feet of
6" D.I. pipe + 2 fire hydrants along S. W. Fern Street, west of
135th Avenue, to replace 4" O.D. steel pipe and parallel for
pressure system.
c. Private contractor install submersible deep well pump
at #1 reservoir.
October 1976:
a. Private contractor start construction on 10-MG reservoir.
b. TWD install new 3 HP pump for Fern Street pump station.
-9-
ADMINISTRATOR'S REPORT (Continued)
October 1976 (Continued)
c. TWD install 550 feet of 12" D.I. pipe + 1 fire hydrant
along S. W. 135th Avenue, Fern Street to #3 reservoir, to provide
adequate pressure.
d. TWD install 1700 feet of 12" D.I. pipe + 2 fire hydrants
from S. W. 132nd and Walnut Street to 135th and Fern Street to
provide adequate pressure.
November 1976
a. TWD install 1400 feet of 12" D.I. pipe and 1300 feet of
6" D.I. pipe + 3 fire hydrants along S. W. 103rd Avenue, Inez to
MacDonald Street, to replace 6" O.D. steel pipe and parallel for
pressure.
b. TWD install 600 feet of 12" D.I. pipe and 600 feet of 8"
D.I. pipe along easement road from #2 reservoir to Gaarde Street
to replace 6" 0.D. steel pipe and parallel for pressure.
December 1976:
a. TWD install fire hydrants as follows:
(1) Terminus of 129th, north of Walnut Street.
(2) 125th and Karen Street.
(3) 115th and Fonner Street.
(4) Tigard and Summercrest St.
(5) Easement (Penrose) and Mountain View Lane.
(6) Hall Blvd. and Bonita Road.
(7) 72nd Avenue, near Georgia Pacific
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r' k�il�'i�l'��Yiliu7fil, h.I .
TIGARD WATER DISTRICT E11341S. W. COMMERCIAL ST.
TIGARD, OREGON 97223
PHONE (503) 639-1554
June 28 , 1976
Burke Raymond, City Manager
City of Beaverton
4950 S. W. Hall Blvd.
Beaverton, Oregon 97005
Cicero Smith, Administrator
Wolf Creek Highway Water District Re: Transfer of water
P. 0. Box 745 rights at Scoggin
Beaverton, Oregon 97005 Dam
Grant lumr'n:
For several years the water purveyors in eastern Washington
County have been investigating and studying, both singly and
jointly, all possible sources of water to meet the ever-
increasing needs of our patrons. Most engineers have concluded
that, in the years ahead, water for Washington County must
be imported from outside the county.
If we desire to develop our own system, without reliance
upon Bull Run water, it is believed that there are only two
viable sources of water, those being the Coast Range and the
Willamette River.
An analysis of the quantities of water available at
Scoggin Dam and all other existing and planned dams versus
the projected needs of Hillsboro, Forest Grove, other western
Washington County cities , and possibly Beaverton and Wolf
Creek Highway Water District, there would be insufficient
municipal and industrial water remaining to accomodate the
long-range requirements of the Tigard Water District. Accord-
ingly, it has been generally concluded that the future needs
of the Tigard Water District can best be met by developing
the Willamette River.
In view of the above, the Tigard Water District would
like to offer either of you its water rights of 2 , 500 acre-
feet from Scoggin Dam. The contractural arrangements for
the assignment of these rights could be similar to Beaverton' s
transfer of its rights to Unified Sewerage Agency in 1973 .
""' ° ���nIIIInn�fd�ih�i�Wi91161 ='°`a'"°`""'�-'�'ku ,I118m,IIIIililldua.WJYY11.,
-2-
The Board of Commissioners would prefer to transfer these
rights to another domestic water purveyor, hopeful that in
the future an inter-tie can be made with the Tigard Water
District. If you do not desire to acquire these rights
other agencies will be afforded the opportunity to acquire
same.
A response at an early date would be appreciated.
Sincerely yours,
TIGARD WATER DISTRICT
o:`1,,e.df:g7je,zelze_,e7
Robert E. Santee
Administrator
RES:nil
cc: City of Hillsboro
Metzger Water District
Tualatin Valley Irrigation District
'400,
, Of/ hornf:114,
/1.9111. V
295 9.5. 9ecnnd Ave. 649-9921 Hillsboro, Oregon 97123
1 July, 1976
Tlgard Water District
0041. S.W. Commercial Street
Tigard, Oregon 97223
Aft-option: Mr. Ro?)ert F. Santee
Re: Tigard Water Districl Scoggin Dam Impoundment Rights
Gentlemen:
Upon receipt of a copy of your letter of June 28, 1976 to Burke Raymond and
Cicero Smith, offering either of those agencies 2,500 acre feet of Scoggin
Dam impoundment presently owned by the Tigard Water District, I elect to
*NW advise You that either the Hillsboro - Forest Grove Joint Water Commission
or the City of Hillsboro litAllties Commission is willing to accept the trans-
fer upon your determination of "no probahle need" to your system,
As you mar be aware, the City of Beaverton and the Joint Water Commission
oF Fillsboro-Forest Grove, are 1n the midst. of a feasibility study to deter-
mine whether it wi lIT he cost effective for Peaverton to also Join with the
Joint Commission in a consortiom form, IF tka.t decision were to be made in
an aLfirmative manner, your waters would be added to the M and IT pool of raw
water to be treated and distributed from the Spring 11111 Water Treatment fac-
illty.
If you should eventually elect that the impoundment would be aYailable to us
we, of course, stand willing to nay you for your costs incurred, including
your proportionate share of costs previously assessed and paid to the Bureau,
or Reclamation. If you desire a rese7.:vational right: for recovery for a spec-
ified period of time, ye you'd he agreeable to negotiate cr-,LIvolt -in en attempt
to occpmmodatn the desires of your Cemmisson.
%re
--- AIIIMMIIIII 1 .
. ' .
Tigard Water District (2) 1 July, ln75
Tt is te stated position of the Joint Commission that the rights to water
4,14ftw do cot 1,21ong to alty oat cc! p-ople cr.- clor Particu7,ar geographi.cal e7ea.
It -'s c1 so cssumed by vs hg': r“-: som-1 t=!me i:1 the futuTe, all thei waers
will -',- - : r -2('cd for FencAuall o71,1 Taloscial ir-Troses. We.. h -ve chse,1 the
culnnso o': arquiring ‘7:1f---27 as - : hi' - "se7ailable for the future l'C' 3 C.)'F the
iiia or: Washington COUPI'l w?lorcr7c-7 M closro,l to he trr:-Innpo7.-V:?(I rrad del-
iw-ol or i:onsomption. In wno.1(1. not rr, our :7-ttolt to noqu ce any wato-s fo
Cho singHla-s: purpose of serving onli our pol."joal Thrisdlotion. Tte. ofore,
if t1 fnd yohrself :711 a pod - cn to Irish to discuss ii -in 1)atte-r uith us
or give vs an opportunli-y to ','Ir.tho.n :11,70stigate with yc;i1, ii ii cc 11. upon
ns et von:- coqveniooca,
Very trolv voors,
IITLVBcP.0-FOP7ST GROVE JOINT COMTSTON
Dv
. Nqnap,c,y
ESTILV
Conic to members of Joint Commission
Copy to Burke Pavmond, City Ifanagor, Peaverton
Slow cni,v to Dan ihirig, City Ihnagcr, Forest Ci-.sive
''Sloure
PHONE 636-4062 01631 S W. RADcLIFFE ROAD
AREA CODE 503
c. �i �Pe C."7 PORTLAND, OREGON 97219
CONSULTING GEOLOGIST
June 15, 1976
Mr. Robert E. Santee, Administrator
Tigard Water District
8841 S. W. Commercial Street
Tigard, Oregon 97223
Dear Mr. Santee:
In regard to your June 10 request for an opinion on your District's
proposal to drill a water well at SW 66th and Baylor Street, near your
reservoir in SE1,;,Sec0J6,T.1S., R.1E. , the following applies.
This site will he a difficult one, The suggested sites 2 and 3 on my
1972 report were not easy places in -whish to obtain water wells and the 66th
and Baylor site would add 100 to 200 feet: more elevation and more of the sur-
ficial "mt. Sylvania1' lavas to drill.
Dv interpretation of the atrrttler-Pphl.e: information at this site indicates
the drilling would be sne'e•esnive Lv in lilt) to l50 feel of "ML. Sylvania" Java,
15(1 feet of Troutdale clay and silt, and 000 feel: of Columbia River Lvelalt.,,
Thus., a well would need to have 12--inch casing sealed into basalt: at a depth of
500 to 550 feet and the basalt explored open--wall below that: depth, The top
200 feet: of the basalt has been found to have a generally low yield of water
in that area; so, the main goal probably would be testing the basalt strata in
the depth zone of 700 to 1200 feet„
401r
The. proposed site at 66th and Baylor would have no advantage in pumping
lift and would be a relatively expensive drilling task (drilling costs have gone
up substantially since 1972) . Also, it would involve a more expensive drilling
operation than a site near the Area 1 designated in my 1972 report:. Possibly
an advantage of the 66th and Baylor site is that it would permit mixing of the
yell water with imported water in the nearby reservoir.
In addition, the lower part of the basalt zone, between 800 and 1200
feet depth at the 66th and Baylor site, is more likely to yield water of inferior
quality than the basalt does in places where it is less deeply covered, Hy-
drologically, my Area 1 still would be considered a much better site than Area 2
and that area better. than Area 3, which in turn i.s still better generally than
the 66th and Baylor. site. The 66th and Baylor sit:e could be used if it is
decided to go with a more expens:'.ve drilling job with an uncertain yield and
water quality.
Concerning your question of test well versus producing well :
A 6-inch or 8-inch test well generally costs from 4115 to per font and
usually is drilled with en air rotary machine, This r.equi_r.es the shutting off
of the first and second water encountered and the cementing in of 6 or 8-inch
casing for part of the tested depth; and, sometimes it: is necessary to seal
water•-bearing zones with cement grout to prevent, drowning the air return of
the cuttings„ If special p;:ecau.tiorts, are made to keep the hole free of cement
grout and to keep all casings removable, then test hole and production well can
4kiw he integrated. tinder thim plan., a 12•-Inch caning wonld he seated and sealed
30 to 50-feet into the basalt fon:mnti.nn (for the pump chomhe ) and 11--inch ai.r
..,m... . ,...,.... —
Tigard Water District Page 2.
firie rotary hole drilled below that casing until the air return was drowned.
A churn drill would then be moved on to drill deeper and to ream the air
rotary hole if larger diameter is desired. An d--inch diameter is generally
satisfactory in the lower part of a. wall. yielding 1000 gallons or less per
minute. Thus, at the 66th and F.ivl or site, probably there would be no savings
in drilling the first 550 feet as a test well, t.h-n ch a water yielding test
hole below 550 feet could serve as part: of a production well.
U. is hoped that the above discourse will answer at least some of
the questions involved in this matter. Please contact me i.f I can clarify further
anv of those
The subject of a regional study of ground water in the Tigard-Tual'ti.n-
Wilsonvil.l e area will be treated in a separate letter.
yours sincerely,
N . (,., f'caass b,
N:n
'141100
Now
1
Stevens, Thompson & Runyan, Inc.
rir_,p y
Engineers / Planners
*me 5505 S E. MILWAUKIE AVE. • BOX 02201 • PORTLAND, ORE 97202 • TELEPHONE (503) 234-0721
1920
PTT-340. 114
June 15, 1976
Mr. Bob Santee
Manager, Tigard Water District
8841 Southwest Commercial
Tigard, Oregon 97223
Dear Bob:
At your request, we have conducted a brief literature review of existing
records of wells and groundwater resources in theWilsonville area along
the Willamette River with an eye toward finding an alternate or supple-
mental source of supply for the Tigard Water District. All of the material
we have uncovered at this time indicates that the chances are slim for
obtaining the quantities of water you would require for total supply
with the quality that local residents have come to expect. We understand
you have asked Mr. R. C. Newcomb for advice; his own knowledge plus any
• new data he may develop could conflict with this report of ours. If
that is the case, we would defer to his expertise.
The U.S. Geological Survey has two published reports on groundwater in
this area. For the area north of the River, the report is WSP-1697 (1) ,
published in 1965. For the area south of the River, the report is WSP 1833
(2) , published in 1967.
WSP 1697 deals mainly with the Tualatin Valley and does not contain details
on wells in the Wilsonville area other than a map indicating relative
potentials for finding groundwater in that area. A check with Mr. James
Robison of the U.S.G.S. staff verified these conclusions. It is his
opinion your chances of obtaining anything over 500 gallons per minute
(0.72 million gallons per day) are very slight; and that in the event
you were to obtain such a well, you would soon be in trouble for depleting
the aquifer.
In a brief discussion with Mr. William Bartholomew of the State Engineer's
office, Mr. Bartholomew indicated that the groundwater table in the Wilson-
ville area is now falling and that he does not consider the Wilsonville
area a promising area for high yield wells. We briefly discussed the
possibilities of wells combined with a groundwater recharge program similar
to that attempted in south Salem, and he thought this might be feasible
if the iron content of the groundwater were not objectionable. This
would only be attractive if a plant were constructed for the treatment
of Willamette River water and the treated water was used for recharge.
6
PORTLAND-SEATTLE-BOISE-HOUSTON-MILWAUKEE-ROCKVILLE-WASHINGTON, D.C.
•
titt•v c•nr;.7'I1OI lI).$OIl .K: ItuII%'an, rno.
Eng neers/PlannerF
Mr. Bob Santee
June 15, 1976
Page Two
In order to check out the gravel deposits along the shore of the Willamette
River at Wilsonville, I talked with Mr. Stan Ausmus and Mr. Herb Schlicker
of the Oregon Department of Geology and Mineral Industries. Mr. Schlicker
was quite familiar with the area. He doubted whether the deposits in
this area were as deep at the River level and also doubted their suitability
inasmuch as they contained angular basaltic rocks of greatly varying size
which would cause difficult drilling and low yields.
On the south side of the River, the reports on existing wells indicate
both poor quality and quantity. The U.S.G.S. data on the wells in this
area is included in the photocopies attached to this letter. The water
quality data for well 27R1 is especially discouraging. Note in particular
the iron content of this water.
[n summary, we have not uncovered any favorable reports on groundwater in
the Wilsonville area in the quantities you will he needing to meet the
future needs of the Tigard Water District.
Very truly yours,
STEVENS, THOMPSON & RUNYAN, INC.
Carter H. Harrison, P.E.
Senior Civil Engineer
CHH:cab
Enclosure
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PHONE 636-4062 01691 S W RADCLIFFE ROAD
AREA CODE 503 Ms _o ni ��9 n
PORTLAND. OREGON 972,10
CONsua_TrNG GrOL.0(415T
June 16, 1976
Mr. Robert E. Santee, Administrator
Tigard Water District
8g'd S. W. Commercial Street
'1 i_g:Ird, Oregon 97.123
Poor hr. Santee;
Tn response to your letter of .Tune 10th and inquiry about the cost
of a ground water study and well. development plan for the triangular area
Tigard-•Wilsonville4Tewberg, bounded also b7 1l1.ghway 99h on the north,
1205 on the east and the Tualatin and Willamette Rivers :
1 vinual i:;(• the .Bob an I'r"(Iui.ring, the compilation, int('g,rnt:inn and
p0011(911 lar iof ;;11ft t.(•t('il t- onco en a`o 11f (•; •s1t at lee taxi I t11 (1(0,111r•n 4. th+;
cone 1.u:1 ('1(1 ; anc1 to servo art .0 clan source co;- the ci t i (03 involved, t i in
estimated as taking ten (l(1) dawn, and mc? fee and costs wonU I he about
l OOO.,0,l,
I estimate that I could get it completed and presented in that time
because much of the data is on file in State and Federal repositories,
`1Wr and because T recently compiled a report far Ullsonvi.ile on the south-
eastern port of the designated triangular area. Also, 1.t: is nay impression
that most of the Parrott Mountain upland could he e.relltded as it is unlikely
to contain source areas of interest as cit water sources. Thus, the task
would consist largely of presenting the ground water data of the Tigard
and Tualatin areas a+1d integrating that: information With the (li lnonl i.i.le
arca report.
I. anticipate being able to undertake the task in August: or September.
I shall he out of town most of July.
Sincerely yours,
C. Newcomb
N:n
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70 S. V!. M3in
Tignicl, C7ccen -177223
June 22, 1976
Marc of Supervisors
1.' d -:!ater District
T ),: S. ::. Commercial
- 1,1H , Orej;on 97201
Dear Sirs:
111)( Ci_tv c).1: Ti ' m..0 in prrsnentTi!- working with local business
prn, inn mn0 cILI : Jw1;1 (m two separate (:ity Peautifiration pro-
Pirst, in the ueorly cepleLnd elle block "dei;lenstration"
Thnescape project betnen Purnam and the rallread trcl:s.
nr.ona, is Liberty Dap17., a bicentennial project, wh; ch proposes
tc• provide a city-center parh on land between Pacific Hi: hway
and soon to be realigned Fain Street. Donations of money,
materials and labor are bein,r; souFht from various civic 7roups.
Sow Doth projects have received substantial support,
The purpose of this letter is to invite the Water District to
become involved in these projects. A contribution the District
could consider would be to supply a drinl:.-ing fountain for each
area. One would be in Liberty POTh and the other would be :in a
pedestrian seating area to be placed adjacent the flag pole in
frent of City D'all. The fountains cost :'.:550.00 each, but A-Pov
on I]ain Street can supply them at wholesale for ::,2P)5.00.
The Water District's assistance in accomplishing these civic
beautification projects will be greatly appreciated, he are
waitiug word of your decision.
•
Respectfully yours,
----Th , 7 —1712 (/
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r.ic17 Polon
Planning Director
DR: jh
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CARTER,,BRINGLE(4,ASSOC.
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THE
THE WATER TOWER • SUITE 255 • 5331 S.W. MACADAM AVENUE • PORTLAND, OREGON 97201 • TELEPHONE 503/224-4226
July 6 , 1976
Mr. Robert E. Santee
Administrator/Engineer
Tigard Water District
8841 S .W. Commercial Street
Tigard, Oregon 97223
Dear Bob,
We are prepared to release the original drawings of the district ' s
base maps and intersection drawings as requested in your letter
of April 20 , 1976 .
You and I have discussed our reluctance to release these drawings
as being contrary to our established policy of many years and
expressed in the American Society of Civil Engineers Manual of
Practice No. 45, " . . .original documents, designs, drawings , and
survey notes. . .represent the product of training, experience ,
and professional skill. They belong to, and remain the property
of the Engineer. . . " . Also we were able on several notable
occasions to restore the records of municipalities where they
were destroyed deliberately, inadvertently, or by accident.
We believe this is a continuing service we have been able to
provide our clients over a long period of years.
The following originals are being delivered to you:
1. Three sections of the 300-foot scale base maps -
1 on Mylar and 2 on linen.
2 . Intersection drawings - 258 on Mylar
147 on Linen
Nur..
Mr . Robert E. Santee
July 6 , 1976
Page 2
e It would be much appreciated if you would endorse a copy of this
letter of transmittal for our records .
We are relying on your assurance that these original documents
will be kept secure.
Very truly yours,
CARTER, BRINGLE & ASSOCIATES
Elden W. Carter, P.E .
ewc/sp
enc .
fir, Received the above documents for the Tigard Water District on
July '7 , 1976 .
Robert E. Santee,
Administrator/Engineer