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<br />4/27/59
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<br />
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<br />
<br />THE PROBLEM Of MAINTAINING A PURE WATER SUPPLY AND IS NOW SUPER-CHLORINATING. HE
<br />fURTHER STATED THAT IF THE MEANS Of REMOVING CHLORINE fROM THE WATER SUPPLY HAD
<br />BEEN AVAILABLE WHEN SUPER-CHLORINATION BEGAN, THEY WOULD NOT BE ,CONCERNED WITH
<br />THE CHLORINE PROBLEM AS IT NOW STANDS.
<br />
<br />HE INDICATED THE PRESENT CHLORINE DOSE IS MORE THAN ADEQUATE TO KJLL THE VIRUS
<br />Of THE MOST RESISTANT HEPATITIS, AND A SYSTEM Of CHLORINATION HAS BEEN DEVELOPED
<br />WHICH IS MANY TIMES OVER THE, REQUIRED DOSAGE. THEY NOW PROPOSE AFTER THE
<br />CHLORINATION HAS BEEN ACCOMPLISHED TO RETURN THE CHLORINE LEVEL TO A PALATABLE
<br />STAGE.
<br />
<br />IN RESPONSE TO SOME SPECifiC QUESTIONS ASKED BY MEMBERS Of THE COMMITTEE, MR.PRICE
<br />INDICATED THE BACTERIA COUNT fOR THE PAST fiVE YEARS HAS BEEN SPOTTED AND THAT
<br />IT SHOWED A RAPID INCREASE IN THE PERSISTENCE OF BACTERIA AND THE TIME REQUIRED
<br />TO EffECTIVELY KILL SUCH BACTERIA, BUT THAT THE LEVEL Of THE COUNTY AVERAGE HAS
<br />NOT CHANGED MATERIALLY. WITH RESPECT TO THE COST OF CHLORINATION HE STATED THAT
<br />$10,918.00 HAD BEEN SPENT OVER A PERIOD Of fiVE YEARS, ENDING IN 1958, AND THAT
<br />THIS COST HAS DROPPED DUE TO AN ARRANGEMENT WITH THE CITY Of EUGENE fOR LARGER
<br />PURCHASES Of CHLORINE.
<br />
<br />WITH REGARD TO THE COST Of THE CHLORINE REMOVAL EQUIPMENT SO THAT .2 PARTS PER
<br />MILLION Of CHLORINE WILL BE RETAINED, THE EQUIPMENT WILL COST FROM $10,000.00
<br />TO $13,000.00 AND THE OPERATIONAL COST Of THE EQUIPMENT WILL APPROXIMATE $780.00
<br />PER YEAR.
<br />
<br />A REPORT or THE COST Of THE EXTENSION Of THE WATER SYSTEM UPSTREAM WAS MADE AND
<br />MR. PRICE STATED THAT TO GO TO THE OLD INTAKE WOULD COST APPROXIMATELY 1-1/2
<br />MILLION DOLLARS, TO GO TO WALTERVILLE BY PIPE, $2,880,000, AND THAT AN INVESTI-
<br />GATION IS CURRENTLY BEING MADE TOWARD THE DEVELOPMENT Of A POWER P~TENTIAL AT
<br />HAYDEN BRIDGE WHICH WOULD BRING WATER FROM UPSTREAM BY CANAL DOWN TO HAYDEN
<br />BRIDGE AND WOULD ALLOW A POSSIBLE GREATER CONTROL Of THE BASIC WATER SOURCE.
<br />
<br />IT WAS FURTHER INDICATED THAT AT THE PRESENT TIME THE SURfACE WATER EfFLUENT
<br />WHICH HAD BEEN FOUND ABOVE THE EXISTING INTAKE IS BEING DIVERTED INTO THE
<br />WEYERHAEUSER OUTFALL LINE AND THAT THIS PRESENTS NO PROBLEM AT THE PRESENT
<br />TIME ALTHOUGH WORK IS CONTINUING TO ALLEVIATE THE SITUATION ON A MORE PERMA-
<br />NENT BASIS.
<br />
<br />IT WAS MOVED BY MR. SHEARER SECONDED BY MR. CHATT THAT ITEM 3 Of THE COMMITTEE REPORT BE
<br />APPROVED. MOTION CARRIED.
<br />
<br />4. PRESENTATION Of PLANS AND SPECifiCATIONS fOR TRICKLING fiLTER AT SEWAGE TREAT-
<br />MENT PLANT BY RALPH RODERICK OF CORNELLJ HOWLAND, HAYES & MERRYfiELD - MR.RoDERICK
<br />APPEARED BEfORE THE COMMITTEE TO DISCUSS THE PLANS AND SPECifiCATIONS fOR THE
<br />TRICKLING fiLTER ADDITION TO THE SEWAGE TREATMENT PLANT. HE STATED THAT THE
<br />BASIC REASON fOR THE CONSTRUCTION Of THIS TRICKLING fiLTER WAS THE LARGE AMOUNT
<br />OF INDUSTRIAL WASTE WITH HIGH CHLORINE DEMAND COMING TO THE PLANT WHICH MADE IT
<br />NECESSARY TO ADD A BIOCHEMICAL PROCESS. To GIVE A PROPER ANALYSIS fOR THE CON-
<br />STRUCTION Of THIS TRICKLING fiLTER, A PILOT PLANT TO AID IN PLANNING WAS BUILT
<br />AND OPERATED IN THE SUMMER Of 1958, AND THE TRICKLING fiLTER DESIGN IS PLANNED
<br />AS A MEANS OF REDUCING BACTERIA fOLLOWED BY A CONTACT CHLORINE BASIN WITH A fiLTER
<br />DESIGNED TO REDUCE BY 85% THE OXYGEN DEMAND AS REQUIRED BY THE STATE. HE FURTHER
<br />STATED THEY ALSO PROPOSE CONVERSION Of THE EXISTING DIGESTERS TO INCREASE CAPACITY
<br />AND THE ADDITION Of A DEWATERING PROCESS FOR SLUDGE.
<br />
<br />IT WAS MR. RODERICK'S ANALYSI~ THAT THESE ADDITIONS WILL MAKE THE PLANT ~VAILABLE
<br />TO 75,000';TO 80,000 PEOPLE PLUS INDUSTRIAL WASTES WHILE AT PRESENT IT IS AVAIL-
<br />ABLE TO 50~OOO PEOPLE PLUS INDUSTRIAL WASTES.
<br />
<br />FOLLOWdNG THIS SOME GENERAL QUESTIONS WERE ASKED OF MR. RODERICK AS THEY RESPECT
<br />THE OVERALL SEWER PROBLEM IN EUGENE. IN MR. RODERICK~S REPLIES HE INDICATED
<br />THE BASIC PROBLEM EUGENE HAS IS IN ITS COLLECTION SYSTEM. HE fURTHER STATED
<br />THAT wE WILL HAVE TO SEPARATE OUR STORM AND SANITARY SEWERS AND ,THAT WE MUST
<br />BEGIN fACING THE SANITARY SEWAGE PROBLEM NOW, ESPECIALLY AS THE INTERCEPTORS
<br />ARE CURRENTLY DESIGNED ON A COMBINATION BASIS.
<br />
<br />IN REPLY TO A QUESTION MR. RODERICK STATED THAT THE EXISTING SEWAGE DISPOSAL
<br />PLANT IS SO CONSTRUCTED THAT WITH ADDITIONS TO POPULATION IT NEED NOT BE
<br />COMPLETELY REBUILT BUT ONLY NEEDS ADDITIONS.
<br />
<br />AGAIN IN REPLY TO SPECifiC QUESTIONS, MR. RODERICK STATED THAT A STORM SEWER
<br />SYSTEM CANNOT BE DESIGNED TO SERVE MASIMUM RAINfALL AS OCCURRED IN EUGENE
<br />IN JANUARY 1959.
<br />
<br />IT WAS STATED THAT THE CITY OF CORVALLIS HAS RECENTLY COMPLETED A STUDY TO
<br />SERVE A CONSIDERABLE AREA AROUND THE PRESENT CITY AND TO SEPARATE THE COM-
<br />BINATION SYSTEM IN THE,CITY, AND THE ESTIMATED COST Of THIS IS 2-1/2 MILLION
<br />DOLLARS TO BE SPENT OVER A PERIOD OF 15 YEARS.
<br />
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