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HomeMy WebLinkAbout31247 / 81-11xo3 ay� 3o yanos seaza ui -e�zjzqeqa� zaMag zo3 spzq - UiT - •xan2g s��aCoad uoz� �03 asi��anpy s��az�uo� uoi�s�ijiqaya� wa�s�g iaMag �03 suoz�e�z3i�ads pua susZd �iwqns usTd saiazZz�a3 aq� so3 sta��zwqns a�aTdmo� �anins uo��snjeng wa�s�g �aMag ay� zo3 sTa��imqns a�atdwo� £86i `i �a4���0 £861 `t �Tnf ZHbi `T �Tnf Z86T `i T?idtl •s�uaptsaz ��r� 3o d�zadoid pun q}T2au aq� zabuepaa �Uu �(iM ��iuM 'x30M S3SS �uE I�'1 DUTSnp paT3t�uapr s�atqoid uo sMa=� a�uEUa�uta� dat� �q pausrTd�o��a aq uE� u�TuM XzoM uot� -�az3o� ssed�q pue MoT;iano �ouT� a�ET�iui Tg6j �Z Trzd� SZS�TEUE MOj�UI . -�uoi�es�ji3ui aq� ao; staj�zmqns aaaZdmo� iH6T `i T23dtl a�usil mo� 3o ajnpau�g •�a�3sazau� paasil suoi�ipuo� ay� o� ��aCqns pue Molaq uMOqs sa �iwzad S3QdM s,��i� ay� oa suoz�s�i3ipom ain�n3 atqissod o� pus �suoisua�xa aaMas ain�n3 zo3 sTenozdda uis�qo o� ��i� ay� 30 ��tttqs ay� y�oq o� ant�ajaz uso�ysp 30 ��z� ay� zo3 alnpaq�s a�uai�dmo� a ysijqa�sa o� pa�sanbaz �qasay si p�aog sa -�inosa� jazn�eN 30 �uaw�sadaQ uisuo�siM au� �ay� 'qsoxysp 30 ��i� aya 3o Ti�uno� uowwo� au� �q Q3A70SHx ZI 3E `3�033�3HZ `MON �aTnpay�s paq�a�as ay� �q paasz�snZZz sa ��uiwnsuo� awz� os si swaTqosd paiano�szp �Znau asay� o� suoz�njos 3o uoi��nz�suo� pus °u�isap �SZS�jEUE au� pua �smaZqozd asay� 3o apn�zu�em ayy `Stl3�3HM pus °sis -�ZEUS MoZ3ul�uoi�azaZi3ui pa�aTdwo� .tt�ua�as ay� �q pa�uamn�op sa maas�s aaMas s�i ui swatqozd MoT3uz pus uot�ez�jt3ui �us�i3iuSFs �ian pazano�sip �Z�ua�as say usoxysp 30 ��i� aqy 'Sygg�� pua 'sMOZ3�anp pus sassed�g o� anz�atas �utmo�q�io3 aq �am �zwsad S3QdM s,�ai� aq� o� suoi�s�z3ipom u�a�zaa �By� pa�e�ipui saq sa�znosag Tsin�ap �o �uaw�isdaQ utsuo�stM aq� 'Syggg� pus 'wa�s�g saMas �zs�iuss s�� pua�xa o� anui�uo� oa saiisap uso�usp 3� ��?� au� `SV3�3IdM Hozsn7osaa TZ � i�5� `? iI�dB December 1, 1983 Advertise for bids for Sewer Rehabilita- tion Projects in'areas north of the Fox River. , March 1, 1984 Axard Contract and Comsrience Construction July 1, 1986 Complete construction of all improvements- eliminate all Category 1 bypasses and over- flows Conditions 1. The work specified above shall be carried out regardless of the availability of grants. 2. If additional dry weather bypasses are discovered during the SSES, the City will take action to eliminate them by Ju1y 1, 1983, if possible. 3. Semiannual progress reports on bypass and overflow correction will be submitted to the Department of Natural Resources be- ginning July 1, 1981, until the correction of wet weather by- passes and overflows is completed. 4. The following attachments are to be considered a part of this resolution. a. A narrative of the past history of clear water correction programs in the City of Oshkosh. b. Justification for extension of the schedule of compliance to July 1, 1986. - c. A discussion of the City of Oshkosh's financial resources. BE IT FURTHER RESOLVED that this resolution, with referenced attachments, be forwarded to the proper Department of Natural Resources Officials. - 11B - �.:r:;ii.yr;,:? BY , , ,., ,,,, -;., � u � ��i�L c�. � �, p �;n � (�y �� i�����'k' � h�)' , ` � Il ( � �;,,y�� ., April 1F, 1�81 P4r. Converse Marks Citv Clerk ?. 0. Box 113n f)shkosh, WI 5490?_ Dear rir. �'1arks: \ DEPARTMENT OFNATURALRESOURCES Canoll D. Besedny Secietary IN REPLY REFER TO: This is to inform you that Department staff has revieaied a resolution passed at the reqular meetinq of the Common Council of the City of Oshkosh on April 2, 1981. Staff has made a tentative determination that the program and time schedule included in the resolution is acce�table. 6ecause the resolution concerns the correction of wet t�reather bynasses and/or overflows, and the schedule of compliance extends beyond July 1, 1�?�3 to orovide for correction by June 30, 1936, the Natural Resources Board has been notified with the recommendation that they approve the resolution under s. MR 11!1.Q5(4)(b), 1•!is. Adm. Code. The resolution will be formallv nresented to the Natural Resources Board probably sometime around 2:00 p.m. in the afternoon of April 22, 19p1. The cit,y is welcome to attend this session or to answer questions in the discussion of the resolution. I will be calling h1r. Frueh to inform him of the exact time and place for the meetina early next areek. If you have questions about this, please contact me at (608) 266-7653. Sincerely, Bureau of 4lastetvater Planagement � � � . ���. , �.Q Ro�er L. Larson, P.E. �lunicipal 4lasteatater Section RLL:kI cc: Lake Michigan District Ken Hollenzer - EE/5 Jim Savinski - Oshkosh Area Office l•lilliam 0. Frueh - City of Oshkosh David Wright - Howard, Needles, Tammen & Beraendoff 3n2� • -. CLEAR WATER CORRECTION PROGRAMS IN THE CITY OF OSHKOSH The State Board of Health issued an order to the city of Oshkosh in � 1954 to separate storm water from the sevage system. The city hired Doaohue 6 Assxiates to study the situation and propose a plan of action for the elimination of combined sewers. In February� 1955, Donohue filed a report and program to eliminate combined sewers ia the city of Oshkosh. The zeport and progzam vere accepted by the city, and has been the basie for the continual sexer separation program by the city as evidenced by the following tabulation of dollars expended sinee 1955. Year 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 HW $500,000 35,000 SEWER SEPARATION FUNDING 1955 thru 1980 DNR $50,200 41,500 $535,000 $91�700 EDA $429,000 $429,000 CITY $ �167�439 48,965 325,857 857,400 392�549 329,942 330,260 272,807 318,713 143,923 155,16x 39,143 949,801 301,330 154,575 92,172 399,611 134,204 246,577 144,565 301�211 162,500 88,095 826,011 558.532 687,996 $8,438,339 TOTAL $ 167,439 48,965 325,857 857,400 392,549 329,942 330,260 272,807 318,713 143,923 155,161 39,143 1�449,801 301,330 204,775 92,172 399,611 169,204 246,577 144,565 310,211 204,000 517,095 826,011 558,532 637,996 $9,494,039 The above costs do not include consvlting engineer's fees, city engineering design costs� or inspection costs. t �� _Z � I In additioa to the above, it is eatimated the city of Oshkosh has � spent $150,A00 since 1964 to Amezican Consulting Services (now called PSG) for I/I work including rainfall simulation, smoke testing, and inspeetion ia vazious drainage areas of the city to eorzect problems sueh as basement backup� overfloWS and diversion chambers. Presently the engineering consulting firm of Hovard, Needles, Ta�en and Bezgendoff are vorking on a Step 1(Facilities Planning) progzam for the city, The eity appropriated $20�000 and $77�000 in 1979 and 1980 respeetively to the Step 1 program. � Justification For Extension of Compliance Schedule General � �i As illustrated in the preceeding narrative, the City of Oshkosh has been working since 1955 to eliminate combined sewers and other clear water problems. Effective in the fall of 1980, all known combined sewers and dry weather bypasses and overflows have been eliminated. In response to requirements of the Department of Natural Resources relative to future sewer extensions, the City began elimination of wet weather bypasses in accordance with the schedule submitted with the initial sewer extension resolution of 1976. However, upon elimination of several major wet weather bypasses, serious basement and street flooding problems began to occur. Realizing that public health and property damage considerations outweighed all other factors, the City promptly retained an engineering con- sultant, and began a facilities planning and Infiltration/Inflow analysis process, with the expectation that the conditions in the sewer system creating these flooding problems could be readily identified, and quickly resolved in a cost effective and timely manner. In order that the program proceed as quickly as possible, the City authorized a very comprehensive I/I arialysis, which in- cluded the installation of flow meters at the outlets of all sub- watersheds in the study area. Based on information avaiLable at that time, it was believed that several key areas were contrib- uting the majority of the excess clear water flows, and that cor- rections could be readily made once the problems were identified. However, this original concept did not turn out to be correct. The I/I analysis identified several factors that had been previ- ously unknown. First, the City's I/Z problems are widespread. While problems in several areas are greater, sewer rehabilitation work is likely to be cost effective in many areas and is neces- sary before all wet weather category 1 bypasses and overflows can be eliminated. Second, when the City initiated the I/I study, 7 bypass or overfTow points were known. Upon completioa of the I/I study work, 23 had been found, 4 of which have already been eliminated. These previously unknown bypasses and overflows had the effect of hiding the magnitude of the clear water problem from City Officials which in turn led to the sincere belief that corrective measures could be taken in accordance with the compli- ance schedule previously agreed to. Based on the I/I analysis, the following conditions are now known to exist in the study area. t The dry weather base flow, as ascertained from water records, should be approximately 2 million gallons per day. During high ground water elevation periods, infiltration con- tributes 6 to 8 million gallons per day additional flow. �i� 3. During a 10 year reoccurrance interval storm, flows into the sewer system can be as much as 120 million gallons per day. Of this, approximately 85% is bypassed back out of the system before reaching the wastewater treatment plant. 4. If the City were to attempt to convey and treat ali 10 year reoccurrance interval flows as a solution to the bypassing problem, corrective measures could cost between 30 and 40 million dollars, in addition to extremely high pumping and treatment costs. 5. As an alternative, sewer rehabilitation work to eliminate most clear water flows, combined with bypass elimination, sewer reinforcement and pump station reconstruction could cost between 10 and 20 million dollars, along with saving substantial amounts for pumping and treatment. In summary, the City is now faced with a far more costly and time consum- ing process of investigation, design and construction than had been previously anticipated. Details of this process are discussed further below. Requested Compliance Schedule Comments A ril 1, 1981 - Com lete submittals for che Infiltration/Inflow A�nal s—is. (i I) This analysis was sub;a�t:ted to the DNR in Decem- e o 980, and is currently under review. It is expected that finalization of this review, and responsP to DNR questions can be completed by April 1, 1981. April 1, 1981 - Initiate minor Overflow and Bypass Correction Work. In response to overflow and bypass problems found in the I I work, the City's Department of Public Works has already in- vestic�ated and elimir.ated nine of the identified discharge points. In its continuing effort to comply with State regulations, the City will endeavor to eliminate these problems as they are dis- covered, ir_ a timely manner, as long as such elimination does not endanger the health and property of City residents. A�ril 1, 1982 - Com lete Submittals for the Sewer System Evalua- tion �urvey. 55F.'S� ort y a ter inaiization o t e 17' a��- sis review by the DNR, with it& concurrance, the City will begin an SSES. This work wi11 include physical survey of 2100 manholes and lines, flow monitoring at 14 key manholes, smoke testing of 420,000 feet of sewer line, dyed water flooding of 170,000 feet of storm sewer line and 425 storm and sanitary sewer crossing points, flow isolation of 210 sewer segments, and sewer cleaning and televising of 130,000 feet of sewer line. Most of these tasks cannot be completed concurrently because identification of actual test locations depend on information gained from a preceeding task. From date of initiation to submittal of an approvable report the work is expected to require one year's time. July 1, 1982 - Complete Submittals for the Facilities Plan. After Zompletion o t e SE�, t�e faci7ities p an can e comp e ed with the most cost effective solutions identified, and reviewed with ��I the public. While faciliCies planning is a part of the ConstriSc- Cion Grants Process, it is also a logical vehicle for the City to utilize in selection of a final plan, and in informing the pub- lic. It is also a DNR required step beFore major modifications can be made to the system, with, or without fundings. Ju�l, 1983 - Submit Plans and S ecifications for Sewer System RehaTiTitation ontracts. i e t e ity wil�ba y e ma ing minor corrections to problems found during the SSES, major reha- bilitation of existing sewers, pump station reconstruction, sew- er line reinforcement, and a stream crossing, are elements which may have to be designed. This type of design work on existing structures is difficult and time consuming for both the City's designer and the DNR reviewer. October 1, 1983 - Advertise for bids for Sewer Rehabilitation av c�.�a. ai�w .�uty 1� i�uJ lV VCI.VVCL 1� 170.]� t.LIC lilly Wlll e ma ing financial arrangements based on Engineering estimates. If this includes the sale of bonds, several months will be requir- ed to finalize the issuance. Actual bidding, through award of contracts, will take 3 to 4 months, with construction starting in the Spring of 1984. March 1, 1984 - Award Contracts for Sewer Rehabilitation Projects. Since areas north of the City will most likely be pumped into the south interceptor via a river crossing, sewer rehabilitation and reinforcement work must begin first on the south side. Depending on the nature of this work, it will require at least two construc- tion seasons in the initial year, followed by sewer reinforcement, and structural changes, including elimination of bypasses. North side work will start with sewer rehabilitation in the first year, followed by construction of the river crossing and pump stations in the second year. Actual connection of the north side system to the south side will have to await near completion of the south side work. While considerable concurrent construction work could be undertaken, the project is complicated by the need to maintain flows at all times in the existing system. In addition, high ground water table levels occur in late spring and early summer instead of in the early spring, in response to lake level changes. This factor will- tend to slow construction during the normal con- struction period. As a result, it can reasonably be expected to require a 2-1/3 year construction period before the last wet weather bypass is eliminated. A schedule is attached to this narrative to illustrate the pre- dicted progress of the project. e'1 2 e'� �n m � � � � - O O O O — — � N d � z � c n. a N m � N I'f N r1 d d �• {/1 � , � n ? � n S -' � � p � � � > > > � � C N C N `�C �G rr �- 1'1 � n � � � n 6 e+d � � �� �� � N r1 O O � m 7 7 y �o 7 3 7 A 3 7 � 10 , \ Award Contracts �, — — — � Complete r Start Const N � — — —��--- —� i i � � � � e �o A � � � � �o r S S N m m `n � P m � N n .+ C+ m � r�r O O o � N � � � \ �J P tn � � � � w f =' Compleie o", r -c co__ _� _ — � n �� a � SSES a, y p � A � � C N (D � R � 9 < � l0 -. m ° � � -'„ � Comple[e �__ j �, � �'+ 3 � Fac. Plan � °; o � m v - �n oi 3 � Q N , ff fD � 7 � �• � � N 7 O 7 � N � � A � f1 N M O 7 N � Camplete ;o � a Plans b Specs. � — — — — — � �` — ------ 4' Complete Financial o egin Arrangements Bidding << n 0 3 v r D 2 f'1 m N f9 2 m v C r m e"i -i < O � 0 u+� S � O N S ,, . CITY OF OSHKOSH FINANCIAL RESOURCES \` � The following statements are in response to questions contained in a letter from Mr. Roger Larson, Department of Natural Resources dated December 29, 1980. A. The City of Oshkosh has not reached 6570 of its indebtedness limit. Attached find a copy of page 17 of the City's 1981 annual budget which indicates that the City is currently at 557. of its indebtedness limit. B. The current estimated capital costs of the required improve- ments will not exceed"$1,500 per existing connection. Assum- ing that these costs may be as high as $20,000,000 and divid- ing this By the 16,000 connections to the City's sewer sys- tem, an average cost of $1,250.00 per connection is calcu- lated. C. The City of Oshkosh has not defaulted on any financial obliga- tions within the past 25 years. r f 9 Penonal Property Real Estate Oetember 31, 1978 December 31. 1979 December 31, 1980 r�ri ANNUAL BUOGET ASSESSEOVALUATION 1979 5 26,007,055 169,634,900 �195,641,955 INOEBTEDNESS 1980 INCREASE ESTIMATE (DECREASE S 19,966,514 (S 6,040,541) 172,469,485 2,834,586 5192,436,00� (S 3,205,955) GENERAL SCk00LS CITY E 8,192,700 S 20,604,300 7,282,000 21,900,000 6,510,400 23.426,600 DEBT LIMIT SCNOOLS Limit - lOS of School District Equalized Valuation of E1,133,666,869 10X of E1,133,666,869 5173,366,687 Present Debt - 5 3/4% 6,510,400 Legal Debt Margin - 94 1/4% E 6Tb �$5'�8� CITY Limit - 5� of City Eauatized Value of ;848,876,075 5X of 5848.876,075 Present Debt - 55� Legal Debt Margin - 45� E 42,443,804 23,426,600 j 9,0 7,20 RECAP CITY INOEBTEDNESS General Ciiy Parking Utility Sewer Utility Mater UtTlity ' E 77,058,200 425,000 2,666,700 3,276,700 S 23,42�,60� CITY OF OSMKOSH J TOTAL S 28,797,000 29,182,000 29,937,000 17 � _7�LJDU'_� -�U": ,��:13, ri [.�' �-I O . ,�� � 1� C'. -I� R� O v] o N O N vi w-N � Ca 1� � �-I � N 1� � -v � �.� c. � ti m c, a� a� o.N � �. 3 O c�i a� o[.�i m j•:., W V] ,C. � U N q � U3 UJ N +i '"d U � �` � � U � � N (d N F"." 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