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Water Quality Examination of Willamette River Samples Taken From the Newberg Pool - 03.23.1977 Stevens, Thompson & Runyan, Inc. REPORT WATER QUALITY EXAMINATION OF WILLAMETTE RIVER SAMPLES TAKEN FROM THE NEWBERG POOL TIGARD WATER DISTRICT TIGARD, OREGON Stevens, Thompson 8z Runyan, tic. Y Engineers / Planners 5505 S.E. MILWAUKIE AVE. • BOX 02201 • PORTLAND, ORE. 97202 • TELEPHONE (503) 234-0721 ri. 1920 PT-T34-01-14 March 23, 1977 de Mr. Robert E. Santee Administrator — Tigard Water District Tigard, Oregon 97223 .. Subject: Quality of Willamette River Water Dear Mr. Santee: ". Pursuant to your instructions, we have made examinations of the quality of water in the Willamette River at Wilsonville. Our data are presented herein. While our data represent the conditions at the time of sampling, we have concluded from them and data from others that conven- e. tional treatment processes will produce water meeting standards to go into effect next June. Short-term conditions affecting treatment may require an occasional plant shutdown and should be operationally foreseeable with upstream monitoring and proper communications with concerned authorities in the state government. Very truly yours, » STEVENS, THOMPSON & RUNYAN, INC. filbert R. Meigs, P.E. Senior Vice President ee GRM:elm 1r.. PORTLAND-SEATTLE-BOISE-HOUSTON-MILWAUKEE-ROCKVILLE-WASHINGTON, D.C. Stevens,Thompson & Runyan, Inc. Engineers/Planners DESK COPY PTT-340. 114 as September 12, 1975 Mr. Robert E. Santee Administrator Tigard Water District 8841 S.W. Commercial Tigard, Oregon 97223 Dear Bob: Confirming our discussion on September 12, we are writing to further explain the raw water sampling and testing pro- oraw that we recommend with respect to the use of the Willamette River as a source of potable water. We recommend lir this program on the basis that the data to be developed will be useful basic information in connection with the design of a water treatment plant to serve the Tigard Water District. The program will extend from 6-8 months and the estimate of cost is based on an 8-month duration. The tests to be made on a weekly basis would be for pH, "' temperature, alkalinity, turbidity, and carbon dioxide. The test to be made once a month would be for ammonia nitrogen, nitrate, iron, manganese, magnesium, sulfate, chlorine or chloride, and a bacteria plate count for the most probable number. As we discussed after a sampling point has been selected, we would train one of your staff to take the samples and he would sliver them to us for analysis. The person who gathers the samples will be trained to perform field "it titration for carbon dioxide sampling and also be furnished with a thermometer to read the river water temperature. On the basis of the foregoing we estimate that the cost to the district would be approximately $3,009-$3,540. We would bill the district on the basis of our payroll costs times a factor of 2.7 to cover direct and indirect costs, overhead and profit and additionally, our transportation would be calculated at 18 cents per mile. There will be no additional ' cost for the use of our field and laboratory equipment or for chemicals. Stevens,Thomp';on & Runyan, Inc. Engineers/Planners tw DESK COPY September 12, 1975 Page 2 1ro ime nuring the week of September 15, we will call and make an appointment to visit with you end go to Wilsonville to look for an appropriate sampling location and also to discuss the procedure to be followed in taking the samples. We look forward with pleasure to providing further um engineering services to the district, and if you have any questions in regard to the sampling and testing program, please feel free to contact us. Yours very truly, STEVENS, TFHOMPSON i RUNYAN, INC. off �• Gilbert R. Meigs, P.E. Senior Vice President GRM:ljp r. low o, WATER QUALITY EXAMINATION OF WILLAMETTE RIVER SAMPLES TAKEN FROM THE NEWBERG POOL Subsequent to the letter dated September 12, 1976, Mr. John Lewis of STR and Mr. Robert Santee of the Tigard Water District (TWO) met at the TWD office and discussed the water quality sampling program at length. - On October 17, 1975, at 11 a.m. , Santee and Lewis went to the proposed sample site, a point on the north bank of the Willamette River approxi- mately one-half the distance between the I-5 bridge and the B/N railroad a, trestle. This location is above the present Wilsonville Sewage Treatment Plant but downstream from a gravel dredging operation. It was decided that this site would make a reasonable sample point because of its avail- ability, location, and because it would approximate the position of a '"' future proposed water intake. Sampling was done on a weekly basis for one full year on a limited analysis r. to include: 1. Temperature of air and water at sample time 2. pH foo 3. Turbidity 4. Alkalinity (carbonate, bicarbonate, and hydroxyl ) 5. Carbon dioxide (free and total ) "' 6. Dissolved solids (filterable residue) Each month, additional parameters measured include: rrM 7. Suspended solids (nonfilterable residue) 8. Total solids (total residue) 9. Coliform bacteria (total and fecal ) 110) 10. Hardness (total , calcium, and magnesium) 11 . Calcium 12. Magnesium +w 13. Iron 14. Phosphate (ortho) 15. Sulfate 16. Nitrogen (nitrate and nitrite) 17. Manganese 18. Chlorides Wo 19. Nitrogen (ammonia) Further, twice during the year, once at low flow and once at high flow, a sampling was made for heavy metals and pesticides to include: em 20. Arsenic 21. Barium m, 22. Cadmium 23. Chromium 24. Lead 25. Mercury ow ww Page 2 `" 26. Selenium 27. Silver 28. Chlordane •• 29. Endrin 30. Heptachlor 31 . Heptachlor epoxide 0.032. Lindane 33. Methoxychlor 34. Toxaphene 35. 2, 4-D (chlorphenoxy) o'" 36. 2, 4, 5-TP (silvex) Parameters 20-36 were to be sampled twice during the program because i.o it was felt by all concerned that a sufficient data bank of such expen- sive tests had been developed by local , state, and federal agencies who had vested interests in the quality of the Willamette River at the New- berg Pool . Sampling of the surface water began on October 17, 1975, and the first sample was taken by STR. Subsequently, all samples were taken by TWD r" (primarily by Mr. John Miller) for the project duration. The sampling was terminated on October 12, 1976. Imp Results and emperical test data derived from the project are found in the Appendix. On October 28, 1975, a public meeting was formally held at PGE's audito- r. rium in Beaverton (see discussion topics in Appendix) . After the meeting, Mr. A. D. Smythe of the State of Oregon Department of Health wrote an interoffice memo discussing some of the topics presented. On January 23, - 1976, Mr. Smythe' s comments together with an additional statement from Mr. Leo Farr, Manager of Public Health Engineering, and a letter of transmittal from Mr. Daniel Potter of Washington County were received Ismo by mail in STR's office. After conferring with the Tigard Water District and in an attempt to address the questions that were brought forth through the written comments from Mssr' s. Smythe and Farr, STR attempted to assemble some exotic (Metals and Pesticides) historical water quality data. At sow this point, several agencies were contacted concerning their possible past participation in metals and pesticides analyses as part of a water quality study of the Willamette River at the Newberg Pool . Agencies ow contacted were: 1 . Environmental Protection Agency (Portland and Seattle) ft. 2. Department of Environmental Quality Laboratory 3. United States Department of Agriculture 4. Oregon Department of Agriculture .. 5. Oregon Health Division ... Page 3 Replies from all of these agencies in 1975 and again in 1977 were by tele- phone and all comments were negative with the exception of the OSDA' s laboratory in Salem. They indicated that during one period in the 1960's a cursory examination of the pestiquality of the Willamette River near Salem was considered and two samplings were made. The water was analyzed by the Electron Capture technique on a Gas Chromatograph and after an extraction, the quantitative results were so minimal that a qualitative breakdown was impracticable. Such a qualitative analysis would have re- sulted in an undetectable amount not sufficient to quantify. The DEQ ENOlaboratory forwarded some water quality data from the Newberg Pool , but no heavy metals or pestiquality in this particular reach of the Willamette had ever been done by their laboratory. In light of the fact that no real heavy metal and pesticide data was made available to this study, a decision was made that such data should be generated once a month and included in the scope of the project. ,,,, Particular attention was given to the Interim Primary Drinking Water Standards, Vol . 40 No. 51, March 14, 1975. "Federal Register" with respect to proposed maximum contaminant levels for inorganic chemicals and pesti- cides. It is important to remember that all maximum levels proposed in the "Federal Register" are concentrations to be evaluated in the water which is delivered to the free flowing outlet of the ultimate user of a public water system. All water quality criteria presented in this report is drawn from federal proposed drinking water treatment facility and piped through a distribution system to the users tap. The criteria does not apply to water as it is withdrawn from the source. ow Page 4 ow COMPARISON CHART OF MAXIMUM LEVEL CONTAMINANTS ow Compare: 1. EPA maximum allowed contaminant values for metals and pesti- cides (Finished Water) . wo 2. Willamette River at the Newberg Pool (Raw Water) . 3. City of Portland, Bull Run Reserve at Headworks (Raw Water). .w 4. City of Oregon City, Clackamas River above confluence with the Willamette River (Raw Water) . ow Contaminant 1. 2. 3. 4. ow INORGANIC Arsenic 0.05 <0.01 <0.0025 N. A. Barium 1 <0.1 N. A. N. A. wo Cadmium 0.010 <0.010 <0.005 N. A. Chromium 0.05 <0.05 <0.005 (1) N. A. Cyanide 0.2 N. A. <0.005 N. A. Lead 0.05 <0.005 <0.005 N. A. ow Mercury 0.002 <0.001 N. A. N. A. Nitrate (as N) 10. <0.54 0.029 N. A. Selenium 0.01 <0.001 0.002 N. A. owSilver 0.05 <0.05 <0.0007 N. A. PESTICIDES o p Chlorinated Hydrocarbons Chlordane 0.003 <0.001 N. A. N. A. Endrin 0.0002 <0.0002 N. A. N. A. ow Heptachlor 0.0001 <0.0005 (2) N. A. N. A. Heptachlor Epoxide 0.0001 <0.0005 (3) N. A. N. A. Lindane 0.004 <0.001 N. A. N. A. Methoxychlor 0.1 <0.05 N. A. N. A. ow Toxaphene 0.005 <0.001 N. A. N. A. Chlorophenoxys 2, 4 - D 0.1 0.024 (4) N. A. N. A. i"" 2, 4, 5 - TP (Silvex) 0.01 0.010 (5) N. A. N. A. (1) The City of Portland reported the results as Chromium Hexavalent am and not as Chromium Total . (2) The minimum instrument detectable limit for Heptachlor was 0.0005. ow (3) The minimum instrument detectable limit for Heptachlor Epoxide was 0.0005. ow (4) The July 1976 sample was 0.024, all others were <0.009. (5) The July 1976 sample was 0.010, all others were <0.003. .w N. A. The City of Oregon City has not undertaken a water quality study and the City of Portland either has not undertaken a pestiquality study, or the data from such a study is unavailable for this report. ""' ALL VALUES ARE REPORTED IN MILLIGRAMS PER LITER (mg/L) r. Page 5 me .. A COMPARISON OF WATER QUALITY PARAMETERS m. Shown below is a selected comparison of water quality data from the Willa- mette River at the Newberg Pool on September 7, 1976, with data from the Bull Run Headworks for the City of Portland on September 10, 1976; data from the Clackamas River for the Clackamas Water District on February 9, '1° 1973, and January 6, 1965; and data from the Clackamas River for the City of Gladstone from the Ranney Well on January 6, 1965. " 00, Water Quality Willamette Clackamas Bull Run Clackamas Parameters River River Headworks River 9/7/76 2/9/73 - 1/6/65 9/10/76 1/6/65 "" Total Residue (at 105C) 54.0 61 104 30.0 124 Filterable Residue 46.5 28.7 Nonfilterable Residue 7.6 1.3 w e Alkalinity (as CaCO3) Carbonate 0 0 0 0 0 Bicarbonate 22.6 12 20 12.3 55 Hardness, Total (as CaCO3) 25.7 18.7 8.87 61.0 ilim Calcium 4.9 4.4 7.8 2.2 12.2 Magnesium 3.2 2.0 2.4 0.74 7.4 Iron 0.5 0.18 <0.02 0.130 0.14 me Manganese <0.5 <0.003 <0.005 0.030 <0.05 Chloraide 0.54 2.6 4.2 0.27 5.0 Sulfate (as SO4) 3.0 - 6.0 <0.5 3.5 o„ Ammonia (as N) 0.47 0.02 0.38 0.03 0.15 Nitrate + Nitrite (as N) 0.33 <0.01 <0.40 <0.01 <0.25 Phosphate, ortho (as P) 0.07 0.01 0.01 <0.001 0.05 Carbon Dioxide, free 6.2 2.2 2.7 2.0 15 "' Arsenic <0.01 <0.005 <0.0025 <0.005 Cadmium <0.01 <0.005 Chromium <0.05 Total <0.005 Hexavalent vow Lead <0.005 <0.005 Selenium 0.001 0.002 Silver <0.05 <0.0007 m. pH Value 6.95 7.1 7.2 7.11 6.9 Turbidity (as NIU) 2.8 2 2 0.57 1 " ALL VALUES ARE REPORTED IN MILLIGRAMS PER LITER (mg/L) with the exception of pH value which is in Standard Units and Turbidity which is in Nephlemetric Turbidity Units. " w .. rr Page 6 m. Also of relative importance with respect to river qualiy is the total and fecal coliform densities. The toal coliform average for 15 samples was 1,000 colonies/100 mls; fecal coliform average for 15 samples was 240 colonies/100 mis. The maximum value in each case was 4,000 colonies/ mw 100 mls and 1,500 colonies/100 mis, respectively. The DEQ has measured higher densities. The chemical constituents of the Willamette River water at this sample point are minimum. Total dissolved solids (TDS) +w concentration never exceeded 55 mg/L (43.1 mg/L average) with at least half of the TDS being typical water hardness with an average concentration of 25 mg/L as CaCO3 and exceeding 30 mg/L only once. Chlorides were ✓ typically less than 1.0 mg/L and exceeded that concentration only once. Water temperature reached a maximum of 21.6 degrees Centrigrage (70.9 degrees Fahrenheit) late in July with a minimum reading of 5.0 degrees Centrigrade (41 degrees Fahrenheit) during the last week of December. tow pH values held very constant and always between 6.7 units and 7.4 units with 7.0 units being optimitstically desirable. rr The maximum iron concentration was found to be 0.58 mg/L in the river. This iron concentration will be easily removed by conventional teatment to comply with the EPA maximum allowable 0.3 mg/L. A noticeable sulfate concentration of 20 mg/L is found in the February 1976, sampling. This result is a four fold increase over the next highest concentration, however, 20 mg/L is still negligable when compared to the EPA maximum allowable concentration of 250 mg/L. All analyses were made in accordance with APHA Standard Methods, 13th Edition, 1971, and the 14th Edition, 1975. The methods from the 14th Edition were reviewed and adopted by August 1976. To address the questionof treatability, the Willamette River at the New- berg Pool lends itself to a standard water treatment process to include: 1. Flocculation 2. Sedimentation ow 3. Filtration 4. Chlorination 5. Provision to Feed Activated Carbon A comparison of temperatures and turbidities from the Willamette River and the Clackamas River is shown in graph form in the Appendix. Over the sampling year, the mean temperature for the Willamette River at the ". Newberg Pool was 12.15 °C as compared with the mean temperature for the Clackamas River at the City of Oregon City water intake which was 10.46 °C. The average difference being about 1.7 °C. It does not appear that temperature would be used as a limiting criterion for the eventual develop- ment of the Willamette River as a water source. Temperatures in excess of 27 °C have been observed for short durations in earlier years. r. mm Page 7 U0 All laboratory investigations made have been made in accordance with APHA Standard Methods, 13th Edition, 1971 ; 14th Edition, 1975. „w Hardness Section 122B, 309B, Titrimetric Method using EDTA Alkalinity Section 102, 403, Indicator Method using Sulfuric Acid W" Sp Con Section 154, 205, Wheatstone Bridge (Platinum-Electrode Type) w• TDS Section 148, 208C, Wheatstone Bridge (Self conditioning- Electrode Type) m„ Turbidity Section 163A, 214A, Nephelometric Method SO4 Section 156C, 427C, Turbidimetric Method `' NO3+NO2-N Section 2136, 419C, Cadmium Reduction Method (Modified Diazotization [1-Naphthylamine-Sulfanilic Acid] Method) .. o-PO4 Section 223F, 425F, Single Reagent Ascorbic Acid Method Mn Section 128C, 314C, Cold Periodate Oxidation Method `W Fe Section 124A, 310A, 1 , 10 Phenanthroline Method pH Section 144A, 424, Glass Electrode Method NW Cl Section 112B, 4086, Mercuric Nitrate Method m,. CO2 Section 111A, 407A, Nomographic Determination of Free Carbon Dioxide CO2 Section 111C, 407C, Total Carbon Dioxide by Calculation NW Temperature Section 162, 212, Temperature ✓ Susp. Solids Section 148C, 208D, Total Nonfilterable Residue Dried at 103-105 degrees Centigrade (Total Suspended Matter) ,,,, Metals Section 129A, 301A, Metals by Atomic Absorption Spectro- photometry Pesticides Section 113A, 509A, Organochlorine Pesticides mm Herbicides Section 113A, 509B, Chlorinated Phenoxy Acid Herbicides Coliform Section 408A, 909A, Standard Total Coliform Membrane Filter Procedure „m Coliform Section 4086, 909C, Fecal Coliform Membrane Filter Procedure mm No ' t Felida , CB .Buxton • 2 Orchards 2 tri SAUVIE 0', ( 1pg:youverVar. ,, 2 1 Proebstel I 4 . 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IS 1).A. 1 ariton Dundee / ,...•' ' a,- 1 ---- sA WILLAMETTE RIVER T ,,j,-;:;, -- •,,,, • --- - • sample point 4 .s',/ ,i' \ ,'" :Butte- - 3 WHighland '5 -. . 4 ,/ - 1 / - i 1 ,- 3 ,Lafayette Zai , :hampoeg ,-•• — ville ...,,,., 2 . 1 CNAMPOBG,•• r •arlaw - 5 3 3 x Highland (0) •,. Butte • 2 (1) 41.,;t _ • -- 2 5DOnald - i:urora •Mulino Clarks IMCMillIWil .2 1-1 i 1 /46,. n St. Paul., 4 2 2 ? 4 2 I 2 1 elie .rr 3 A 1 ‘, _ , _ ,-... 4 (1) tg,.-Llia , , .,3 Broadacres' 1 UV 3 . Hu bb•rd Liberal • .. 2 3 3 ' 6 4 1 2 • .• ectl 7 cip 2 mi 2 s., „,1,/, 4 Colton Whites1 e ‘.1V GY, .-,• 1 1 2 2 NM 3 W. • 1 8 5 1 411) Fairfield oodburn • ':. koodbut 411D c) M,Ialla , 2 1 St:.Lout,3 3 •Amity 5 4al*Unionval , __,-.____iFernwood ' 2 ,Gervais t, 5 ' 2 Monitor 8 foe l' e\ r5 ri Hopewell fr, REE FY. i .,floisL 1 3 s )0 WILLIAMSON+ ir-- aconda 3 2 - • EGE ...* •It• .S 5 0 Mount • . . `,.. a Glen Avon --\, ngel 2 Mi rquam jr 4 ' 2 ilhoit us j •. Hopmere. • , „,. 4 1 • .....,...._. 6 i 1•2? Brooks 0 McCoy 5 7 , 4 4 ANMGErl. 2 •--,------7-1 SEMINARY Lincoln i, 5/4,3 ,. 5 Cott Mills _ _ - __ t ,•- • . "f- 0"11 b 1114110111P."1.1.4'W• e Zena .- 5 lit - EmAwA INDIAN 1 6 -- ----\ .. 6 ‘•• - • ./ mom \ 23 D ,,V , : BASKETT SLOUGHPratum , , \ 6 No ,3 NATL WILDLIFE J./ - sif . ,, • , REFUGE 2 HCM.MAN A „4.,(• • 4 .\k..1,,,s . 4 I® .0.4: __ , 1 SALEM 3 ' - PORTLAND 1 Rickrea I Eol• •miAi il-rf AREA ,a \, ailia (ED el 1. M ac leay, • ks 0 2 4 6 8 /;• 1 ‘''''I Hat ONE INCH EQUALS APPROX. 9 MILES i •••• ar -w a— ieeut APPENDIX PY dA �s L' Stevens, Thompson & Runyan, Inc. \r11l / Engineers / Planners 5505 S. . MILWAUKIE AVE. • BOX 02201 • PORTLAND, ORE 97202 • TELEPHONE (503) 234-0721 E Ir 1920 PTT-340. 114 wi. June 15, 1976 rr Mr. Bob Santee Manager, Tigard Water District 8841 Southwest Commercial Tigard, Oregon 97223 rr Dear Bob: At your request, we have conducted a brief literature review of existing records of wells and groundwater resources in the Wigonville 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 "'I" 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 MN new data he may develop could conflict with this report of ours. If that is the case, we would defer to his expertise. w. 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. a" 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 Mit 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. ill, r.. PORTLAND-SEATTLE-BOISE-HOUSTON-MILWAUKEE-ROCKVILLE-WASHINGTON, D.C. Ste%ens,.'1'1 ptic>n K Runyan, Inc. Engineers/Planners Mr. Bob Santee June 15, 1976 Page Two In order to check out the gravel deposits along the shore of the Willamette rzr 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 INN 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 wrar quality data for well 27R1 is especially discouraging. Note in particular the iron content of this water. In summary, we have not uncovered any favorable reports on groundwater in aim the Wilsonville area in the quantities you will be needing to meet the future needs of the Tigard Water. District. "'r Very truly yours, STEVENS, THOMPSON & RUNYAN, INC. Carter H. Harrison, P.E. are Senior Civil Engineer CHH:cab l-N( air war was wrr r �r. DEVELOPMENT OF THE WILLAMETTE RIVER AT WILSONVILLE AS A SOURCE OF WATER PLACE: Auditorium, Portland General Electric Western Division Center, 14655 S. W. Old Scholls Ferry Road (near Murray Boulevard) Beaverton, Oregon irr TIME: 7:00 p.m. DATE: October 28, 1975, Tuesday PROGRAM .rr Time Subject Speaker 7:00 p.m. Introduction and Purpose Don W. Thomas ,,,,. Chairman, Board of Commissioners, Tigard Water District 7:15 p.m. "The Neu Willamette" Staff °""" (26 minute, l6mi coior film) U. S. Army Corps of Engineers •.. 7:45 p.m. Physical facilities and Gilbert R. Meigs, P.E. estimate! costs Senior Vice President Stevens, Thompson & Runyan, Inc. irr 8:15 p.m. Coffee Break 8:30 p.m. Water quality and Peter Von Ohien um required tr.eat^cnt Regional Engineer Public Health Division Department of Human Resources mil 8:45 p.m. Water tightp en Trevor Jones tJillemette Five?- Elate- Resources Department rrr Oregon State Engineer 9:00 p.m. Water rights at Creryon City Falls Robert H. lee end pos.ier ailo.h ?ity et Wilson= Sup^. of Production vll.l.e PortJ.and General Electric 9: 15 p.m. Boundaries end impact upon Donald E. Carlson „■„ service area Portland tletropolitan Area Local Government Boundary Con:mission 9:30 p.m. Federal Funding Tom Pclordin �.. 9:45 p.m. Conclusions Don W. 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I I I � Tigard Water District w I I 1 I 1 I I - -- - I �.. 1 1 1 1 WILLAMe I i t HIVEFi at I-5 t3HIUUE I I WILLAMETTE RIVER AT MARINA MART Tigard Water District Water Quality Study **DEQ Storet Data JANUARY FEBRUARY MARCH APRIL MAY JUNE JULY AUGUST sEF*FMU3LR OCTOBER NOVEMBER " DECEMBER 150 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 t— + I 1 . 1 1" . h.. "i ,. I . �: {. _ _ _ : . .. : .. . . #. is �. H • 130 - _----.-;-u --- ,.:,_7- , --- -- --..- .::. -' - - -- _:. ._.. . . __ .. - . .l 1 IT- • • • • • • 120 ;: . _: _:.- : . C + 1 ' ' _. :_ , , I 110 i. #. } ,. .. +... , . , , I I I } " -I ' - . 10 0 ' . . .. ... ` 1 I } { 1 T1. 't :1 1 (' t ! f t I ?• I + �. i zli • • is =1i- 1— } I . ' • +'.... �.: '} I. I .. . i I I' ' :: 1.:. :• .. I. I , .::::-.---.•-==_-_---::::::::::-',-..t*---r- “'---71'4--h--- :ri, ;:;-1---4' t::,-;-t- Lt--`2,-It T.1-,..',.-..-',.. .... :... . .. .,.., _,..,,-;,. ,.., .... . .. .:.. .. .. ... '..41_1t;', . . ., .1 '. I.:. '1\ ..* '- .. . . . . 4, . ...:... .. : .. ,!.- ,...,.:.!-__.,:_ ::::.--11-1,17.-.: ..:. ...-. :i:..-__I' . 1 1 :.•._... .. ' . . ....... 1-.1-:-,,,., M -. _ 1 ? ; I� �.. r .. .. 4._� .. ... _.. . ... -.. t1 . 4 _. - .. -_ t- r''.1 - ._ .. � ten mon . . - Now- .' • 1 CO :- _ ::. t-: : 1.. "i n"I 'IIJ 1. 1 . 1 i .: 1 ' .:..:.; :'l: {T . ::: N N - z - _. .. ... .. 1- i ' }--'t� 1E_.: / ff1 . .:. .��. �_. i. i 1 ..._50 ` _ w i .a = 1 1 .-. sclAl ' ! • 1 -' - -.1.• /. / . i _ to ------ --- -____. .. - --- - --__.. .-... . - -�� —.�,_.,...—_,� .�._ � _ . _... ...__ _ - .. _. _ -- .tet +; g15 + 5 10 15 �0 2 5 1. is 20 ' .5 �.1,:. .1.. .... . .... .. . .. 0 S iJANUARO 25 5 FEBRUARY5 20 .25 -4 5 10 1S --2-0'25 i 15 2. 5 5".10.•3� '�d. 2�... �.�� �1� 1 ' - + � + ! ' • 1` 20 5 10 15 2 _�5 10 5" d L3'� 's��1• 1- 2 25 5' 10 1- 2b 25 MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER Values x 1000 = CFS Values x 1 = Conductivity @ 25°C in uMhos /cm Calendar Year 1966 1966 was the last full year of Flow data and Conductivity data that the DEQ provided for this report f I . 1 WILLAMETTE RIVER at I-5 B RIDGE 1 Tigard Water District Water Quality Study JANUARY FEBRUARY MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER 5 10 15 20 25 5 10 15 20 25 5 tO 15 20 25 5 IC) 15 20 25 5 '0 15 20 25 5 tO 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 tO 15 20 25 5 tO 15 20 25 5 10 15 20 25 4°°11'—.4----------1-4-'1:-. 00 } ' ,. i • ; , ; •••,• • •_.:, , •••• _. , • ,• 300 . .... :, ' t ;._. .. _. .. _. . ... t _ -t. . 1 __._ ... .._ }. _ .... }.. i " •t •:,,,:•:•••••,,,,,,•,•.i...••:,, , • I { . ... .. :. ..:: •••• ::_,:• __•: :::: ' �:..:�.:.. 1 ; .. • •I' f '}rt'al --dilit r -- t 1 1 ..• . } �k . 200( ....+x.. /. ++ 1 1. C ... ._ l ? 4. .y • �. # � '� #.. .# # . { I �1y� I / I I-- 1 . ` -( r __i. I --i- I\-----, --,- : -t.:. + I —f- H-H .• • . . . -. . . 'I" I t: . ......_ : : .. .... ... a t t-- .j i { T . t—E. i i• t 1 1 i if I100 ► . - ,i-.4.� }' • w i 1 ,1 . ; i , . ,„.. 1 ::1 : ,I . I 1 a ' �L- k:.%.14, . : I 1 .' ' . ' r: .14:: .r 7.1 "� ,• • I- _ _ .—•_ _. ._ - 71: '.` ��� � i � t�{ : "�;'I r 4` `.-+- �-' # � ' T_its '2,4_---24.L_-' ,.. __ ; . : H ,_ -4- .. .. .. • I: { : ^ ... .. . .... 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I IHILIHLJH _, - 1 I = # , # I , , # # I1 1 I: :: - .� -T4 #•: . ::: ,. -t- 5 tO 15 20 25 5 10 15 20 25 5 10 15 20 2S 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 70 15 20 25 5 10 15 20 25 5 10 15 20 25s. 5 10 15 20 25 5 10 15 20 25 5 tO 15 20 25 JANUARY FEBRUARY MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER 1976 1975 I 1 I 1 TEMPERATURE AND TURBIDITY COMPARISONS Tigard Water District Water Quality Study 1 JANUARY FEBRUARY MARCH APRIL MAY :UNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER 80 • 2S 5 10 15 20 25 5 •0 15 20 25 5 10 15 20 25 5 10 15 20 25 - 5 10 15 20 25 11-11:_:111_::— ' 5- 10 15 20 25 -- 5 10 15 20. 25 5 10 15 20" 25 5 10 15 20 #O 1520 25tt0 i5 20 25 '„", °F, ' } y.�.�r,� } - t } " .a �. j � , f .j : I:. i.. { } .} ! ( "1 - '{ ... 't ' .. '..�. : L 1 . i }. I :1, •` • ( , .( . .hr:)�lC� :1=,, `- +1 tt 70 1_ • I •• ' } } t j I 11 1H I j ! _ — ! _ 1 t , . 50-; „.1 k _fit 1 �” ; I .: j • :: .. I ,1 } i ! — — . - -�- t F is —' — t ! 1 50 . '17. • • Wil- ate •:1 y rIli; i iI • , • ! 1 AV. • I } 1 .'.. '-' "( .. H --i----- 1 1_ •.ij i i t r i ! ! ,— I !! ' j '" -i" �• ! i ' -- + fi- i - 40 . . F.. ; . t . _ { .: { . . 1 I i i •} ; i I " ! 1 i.. I i ` t • It " • 1 _ 1 11 \ • 1 *' I i t 1\1 ( I { .. { -. i to "R vfir ,"tt I- -•--,-: ){ 20 j { I . it ` i " '. ' I• . (. i i I , I . i ;— r1 . ,... -.. \ssi I i 1.*I- ... -CI - - f r , _ , i • '` I `'♦� • • " \.• • -4♦ ✓ #a . , f��' I i — 1 ♦ff 'I ..-sir' Z.,:14-7,::. 4: 21:::-"' 'n� } .t„ ' .�+'`'es . 4 ,.. - - - i i �,Ir:," T �- f " { �— f :" —mo 25 ' —rj - ` - -r {I f } i # it Ij : • 1 T } { i i41a libtt -Riivk;r t }� ,� t.- { - } 1 i - ., } .- , :, ; • ! h -., -.1-' �_ I ,!°"fir,,; - -_ i t+ :: - - .. _ .._ - -- - -- ---r }I t t �{-- —t- 1--- +- •— ( �' tet• ♦ 1. moi' •'♦� ;*.r.,—; wt•'.r _ _ l`�� i :--_1 ` µl (" ! I I - + _ .-s• • " 15 • 1 ' i }" E t 1 4,-4 '1' - Xti -i+== • } _ r ia 1 F -p -. .. - 1 . , f ` { te } '_ •I '' i I } -1'" 4 :e'G t'e [\. lr'� • • - = to f f w } 'r, - •t '''''..:..„A„.,„' sr.er a„ .:. _ ,f{/.'..`� i � ' ,-...;,..1..,-.'' --�.•_r, - !" {. _ - ;- :i - .. �;-. , : - _{ • j.'.: .. -:�• -. - f -.4 ...7 �. ..• ,';.e!=__ : +-+ �;f W 5 3i vyr%r.._.'1j.�i+:4, 1^}.. ..... • , 1 ' , - , i -- i . •...! • t .i .. .-. : .. ..,a .. ".fes .-.. 1.11111 FOt+ 0 i t , 1 1 i I i i i L :1 `= 5 tp 15 20 25 5 10 t5 20 25 5 t0 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 5 10 15 20 25 JANUARY FEBRUARY MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER 1976 1975 JMean Temperature for Willamette River , 12. 15 °C Mean Temperature for Clackamas River 10. 469C I y