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HomeMy WebLinkAbout0296_001MINUTES COMMITTEE OF THE WHOLE FEBRUARY 12, 1991 I. ROLL CALL The meeting was called to order at 7:35 p.m. Present at the meeting were: Mayor Gerald L. Farley; Trustees Ralph Arthur, Mark Busse, Timothy Corcoran, George Van Geem and Don Weibel. Absent from the meeting was Trustee Leo Floros. Also present at the meeting were: Village Manager John Fulton Dixon, Assistant Village Manager John Burg, Public Works Director Herb Weeks, Finance Director Dave Jepson, Planning and Zoning Director Dave Clements,) Inspection Services Director Chuck Bencic, Assistant Finance Director Caroli Widmer, Water and Sewer Superintendent Jerry McIntosh; Janet Hansen,t Executive Director of the Chamber of Commerce; two members of the press and seven persons in the audience. II. MINUTES The Minutes of the Committee of the Whole meeting of January 22, 1991 were accepted and filed. III. CITIZENS TO BE HEARD There were no citizens who wished to be heard. IV. STREET LIGHTING Mayor Farley introduced the discussion on street lighting. Trustee Corcoran said that he had requested the discussion of this item because he felt the Village should consider using more energy-efficient lights when replacement is necessary. He suggested using box lights which would aim the electricity in the desired areas by the streets rather than diffusing the light throughout the neighborhood. Assistant Village Manager John Burg provided information on street lighting. After discussion, it was the consensus of the Committee that whenever possible, the Village should change the street lighting to high-pressure sodium to save on energy costs. Box lights should be used whenever possible and where appropriate. The Committee also felt that the requirement for mercury vapor lighting in residential areas should be changed to allow high-pressure sodium lights to save on energy. Assistant Manager Burg indicated that the Commonwealth Edison owned lights would actually cost more for high-pressure sodium. The only potential savings would be on the Village -awned lights. V. HOME OCCUPATIOND Al's Planning and Zoning Director Dave Clements summarized the recommendations of the Zoning Board with regard to the proposed Home Occupation Ordinance. He noted that the Ordinance relied on certain Performance Standards to regulate home occupations. Janet Hansen indicated that she would take exception to not allowing any outside employees. She said the Chamber felt that one outside employee should be allowed. She also felt that the Performance Standard related to the use of a residence by a professional person should be deleted, from the proposed Ordinance. She felt this item would be covered by the Performance Standard related to the generation of traffic. Trustee Arthur said the Village; is trying to improve the downtown. He did note, feel that businesses should be allowed in the residential areas which wouldt compete with the current businesses. He was completely opposed to this type oe Ordinance. Janet Hansen said that many of the businesses which have started in this community did start in the home. Trustee Corcoran asked how many complaints there are about businesses in the homes. Mr. Clements said he receives two or three a month usually concerning commercial vehicles. Trustee Corcoran felt he could not support this Ordinance because he feels it is vague and unworkable. He feels that the language of the Ordinance must be more specific. Trustee Busse asked how the Village would identify businesses that were operating in homes. He asked if the Village would send notice to all the companies who have a Tax ID number. Mr. Clements said notices could be sent as suggested. Mr. Clements said the staff would like to see this Ordinance adopted because staff has been placed in an uncomfortable position when individuals call and ask how they can start a business in their home. Staff must tell them a home occupation is not allowed, but many times these residents say that they know of others engaged in such a business. Trustee Van Geem said he generally supports this type of Ordinance. However, he is concerned about the proposed fee. He would like to see the Ordinance adopted without any fee attached. The Mayor then opened the floor to comments by residents. A resident at 104 Stratford said she was vehemently opposed to the Ordinance. She gave examples of various businesses that have operated in homes in her area over the years. Another resident at 211 South Hi-Lusi said he is a salesmen's representative and has worked out of his home for 15 years. He keeps samples at his home and then he goes out on sales calls. He said his neighbors do not even know that he operates out of his home. He requested a copy of the current Ordinance regulating home occupations and the proposed Ordinance. He was opposed to regulation of home occupations. Trustee Weibel asked how many existing businesses there are. Mr. Clements said the Village could look at the Tax ID numbers and develop this information. Trustee Corcoran would like to work with the staff and the Chamber of Commerce to tighten up the language of the Ordinance. It was the consensus of the Committee that staff should work with Trustee Corcoran and the Chamber of Commerce on the wording of this Ordinance. nisr matter should be brought back at the Committee of the Whole meeting on March 12. Mayor Farley invited the interested parties to attend this meeting and he requested that staff obtain the information on the number of businesses operating in homes in the community. V1. 1991-1992 UM .... ........... GET HEARING Mayor Farley gave opening remarks regarding the 1991-1992 Budget. Manager Dixon then gave a Budget overview including Revenues and Expenditures. Finance Director Dave Jepson then gave a presentation on the anticipated Revenues for the year. He also discussed the information contained in the Introductory Section of the Budget. Mr. Jepson indicated that the Village tries to maintain a 15% balance in the various Funds. He also pointed out that the Village receives 10.3% of the total Tax bill. Trustee Van Geem asked what assumption was used for the salary increases. Mr. Jepson said that 5% was included in the salary figures. Mr. Jepson explained the rationale behind the recommendation to institute an Ambulance Fee for residents. Last year, there were 2200 ambulance transports of which 80% were residents. We are currently collecting 79% of the ambulance charges for non-residents. Mr. Jepson said that insurance covers such a charge in many cases. "3- If Medicare is to pay ;for the ambulance charge for non-residents, Medicare would also require that a fee apply to residents as well. Mr. Jepson 'said that the average ambulance transport costs the Village $350 and so the $125 fee is very reasonable. He noted that the Village does ;not pursue reimbursement other than accepting the payments that individuals can afford or the payment made by insurance and Medicare. Trustee Corcoran said be is against the $125 Ambulance Fee. He feels this is part of a service that should be provided by the Village. He also suggested looking at a seasonally-adjusted water increase or an increase in the water fee once the usage goes beyond a certain limit. Trustee Arthur also opposes the $125 Ambulance Fee. He objected to transferring the responsibility for the Newsletter to the Cable Administrator because he feels she already has enough work to do. Administratign Budggl Village Manager John Dixon outlined the programs contained in thel Administration Budget and explained the proposed expenditures for the 1991-19921 fiscal year. Trustee Arthur recommended deleting the proposed $84,090 for the Personnel Management and Training portion of the Budget. Village Manager Dixon explained why this program is necessary. Trustee Busse requested a road map for the Personnel Coordinator position. Village Manager Dixon outlined some of the projects that have been undertaken in recent months as well as work anticipated for the future. Trustee Van Geem said he has always supported the need for a Personnel office in an organization as large as the Village. He said this position relieves the Finance Director of various duties, thereby allowing him to focus on fiscal matters. Trustee Van Geem said he also supports the training of Supervisors which is being performed. Trustee Corcoran asked how much turnover there is in the Village. Manager Dixon said there is very low turnover at this point. However, there can be more turnover, especially in the Public Works Department, when the economy is good. Trustee Corcoran said he would like to have a one-month action plan outlining where the Personnel Coordinator will spend her time as well as long-range goals. Trustee Van Geem felt this kind of oversight is interfering with the Village Manager's prerogative of managing the .employees. -4- Trustee Weibel agreed with the need for a Personnel Department. He also felt that oversight of this position by the Board is an infringement on the Manager's rights. Trustee Corcoran focused attention on the salary adjustments line item in the Administration Budget. He suggested cutting this item to reflect the amount that is expected to be expended. It was the consensus of the Committee to reduce this item to $5,000. The Committee continued the discussion on whether to transfer the Newsletter to the Communications Division. The consensus of the Committee was to leave the Newsletter under the responsibility of the Village Clerk with the use of an outside writer. However, the Committee would like to see the Newsletter reduced to four issues per year. Trustees Van Geem and Weibel suggested reviewing the function of a Newsletter at a future Committee of the Whole meeting to see if there may be a more effective way of communicating with the residents. Trustee Busse requested an evaluation of the Legal Counsel expenses. He also' requested an evaluation of the cost of two part-time personnel as opposed to one full-time secretary in the Communications Division. Mayor Farley asked why there is such a large reduction in the organization memberships in the Cable Budget. Cheryl Pasalic indicated she does not feel the Village should continue to be a member of the Northwest Cable Council. Mayor Farley said he has felt for years that the Northwest Cable Council should handle cable complaints on behalf of the Village. He also indicated that there will be negotiations in the near future regarding the Franchise and he felt that the collective efforts that the Cable Council could offer would provide leverage in the negotiations. The Committee discussed whether the Village should remain a member of the Northwest Cable Council. It was the consensus of the Committee that the Village should not renew membership in this organization. Finance Depal1mgnt Budpq Finance Director Dave Jepson outlined the Finance Department Budget including Risk Management. Trustee Weibel noted that he hopes the EAP will help to cut medical expenses for the Village. He requested that the Village track this trend. -5- V111.BUSI ANY Y S5 —WER NF Village Manager Dixon indicated that the Citizens' Committee which supports the new Fire and Police Station needs to know how much residents can expect to pay for the new facility. The Committee discussed the financing of this project. It was the consensus of the Committee to go with conventional financing and to stress an increase of less than $10 per year. The Committee decided to be consistent with the information previously distributed rather than developing an alternative financing method. Village Manager Dixon praised Fred Tennyson for the excellent work he did on the new Budget format. At 12:00 a.m., Trustee Corcoran moved, seconded by Trustee Busse to go into Executive Session to discuss litigation, personnel and collective bargaining. Motion carried unanimously. JPB/rcw Respectfully submitted, J4, cp JOHN P. BURG Assistant Village Manager -6- Village of M'ount Prospect Mount Prospect, Illinois INTEROFFICE MEMORANDUM TO: MAYOR GERALD L FARIEY AND BOARD OF TRUSTEES FROM: VILJLAGE MANAGER DATE: FEBRUARY 22, 1991 SUBJECT: SECOND OPINION OF THE STORMWATER MANAGEMENT REPORT Triton Engineering President, George March, will be present to give a brief presentation to the Board on February 26 concerning the review of the Stormwater Management Report conducted by RJN Environmental. Generally, the report is very positive in indicating that all the appropriate measures have been reviewed and undertaken by RJN Environmental and that there was sufficient time that has lapsed since the original construction of some projects that were documented in 1972 to determine whether or not there was impact from the Water Reclamation District's Deep Tunnel Project. At this time, it is very clear that these projects that were identified in 1972 should proceed. JFD/rcw Village of ktount Prospect Mount Prospect, Illinois � INTEROFFICE MEMORANDUM TO: MAYOR GERALD L. FARLEY AND BOARD OF TRUSTEES FROM: VII.LAGE MANAGER DATE: FEBRUARY 22, 1991 SUBJECT: NORTHWEST MUNICIPAL CONFERENCE TRANSPORTATION UNIT The attached information from the Northwest Municipal Conference Transportation Unit outlines an ambitious program of studying all areas of transportation in the northwest suburban area. This organization will develop a coordinated transportation processing plan and serve as a research base and resource for transportation information coordinating projects. I believe it would be worthwhile for the Village to participate in this program at least for the initial year to determine whether or not we do gain some benefit from this new organization. There are a couple of projects of importance that I do believe need to be reviewed and it would be a charge I would give to this transportation committee in the first year. There is traffic congestion taking place in the Opus Business Park. While alternate means of transportation have been discussed., there needs to be a coordinated effort and this organization which has been involved with carpooling and van leasing and other avenues could bring expertise to discussions with the Opus people. In addition, there have been a number of conversations with Randhurst in the past concerning their problems with attracting employees to their facility. While we have not been successful in developing new bus routes; in fact, we have had a couple of bus routes eliminated in the Village, this transportation unit would have the opportunity to review our present bus routes to determine whether there should be an effort to modify those routes to give better service to the community. I am recommending that the Board become members of the Northwest Municipal Conference Transportation Unit with review to be done before the end of the year to determine whether or not we are receiving $5,000 worth of benefit from our participation. JOHN FULTON DIXO JFD/rcw attachment NaR THWEST MUNICIPAL CONFEAENCE 11118 E. GOLF ROAD DES PLAINES.IL 110018 ('108)208.8200 FAX: 298.9207 Arlington Heights Barrington eaeen 8uitaro Grove Des Plarr«es Elk Grove Village Evenelon Glance Glenview Hanover Park Highland Park HpMman Estates Inverness Lake Forest Lake lunch L0ert"be Lineolnwooa Morton Grove Mount Prosoack Ndas Nonhorook NoMheld Palatine Park Ridge Ptowecl Heights Rolling Maaoows Roses. Schaumour9 Skokie $lrearnwood Vernon HMIs Wheeling Wdmelte Winnatke E,k Grove Twp Mame Twp Now Trier Two Norihhelo Twp Wheeling Twp NWMC A REGIONAL ASSOCIATION OF ILLINOIS MUNICIPALMES f lES AND TOWNSHIPS REPRESENTING A POPULATION OF OVER ONE MILLION FOVNDEO IN 1058 Date: �o � l 9 9 r Deliver to: Name;_ J,-!,�, &A -AL Location: MI . Phone; OFFICERS Pr I yen? Frank) Chuley 1-meNnwoM Number of Pages. Cover plus Vice-president Sonya A. Crewshaw Hanover Park SecrelaryTreaswer Craig G Anoerson Wheeling Ek rcuove Dirac?or Rim R. A1hes Other Instructions: '- o� °o-10 M IF YOU DO NOT RECEIVE ALL PAGES PLEASE CALL SENDER AT (708) 296-9200 'NWMC FACSIMILE MACHINE - NEC 300 t FROM N.iJ.M.0 0-7-0.1991 1 4;48 .__ .P. The primary goals of the Transportation Unit would be to provide the mechanists and resources to establish a comprehensive and coordinated approach, on the sub --regional level, to the issue of transportation. +BUD regia ion a rials.,. �3`tu it and E2.1 e1 nita n„zitagrat ,iar , This would be accomplished by holding a strategic planning session including municipalities, transportation agencies, and representatives of the private sector. The objective of the plan is to achieve a compact among the Conference municipalities to implement consistent transportation and development policies throughout the Conference area and to establish a process that ensures early consultation with other municipalities and transportation agencies prior to approval of developments of a regional. impact. This is envisioned as a two day session which would, set the tone for the Conference Transportation Unit and strengthen the transportation linkage between municipalities andAransportation agencies. 2) garve a, = g2==ItJaI.L rase D= =d dA=Ri = gjI rranS122rtation And dpvelgDZ2. jZID=tJgM., This would involve surveying municipalities for perceived transportation problems, cataloguing and mapping ding and development proposals with regional traffic pending approved, and recommending possible strategies. 3) Some Aa =A = mea.' t„rann"rtat2n "A"= =WAIAItj= zzli 2tiAi ,„9"3fn^aYi4� .at%on ps21==-- These projects might include the continual development of the Wisconsin central. Line, the Skokie swift Extension and the Route o3 Extension. Project;.$ would be chosen and prioritized by the Transportation committee and ratified by the Conference membership. fiAQZJJ,J2r-"nsl252xJ;Ar.1n. iZZU0, These projects might include Station,tspecific he CT& kbus eorwrail ift Sapplications nand illow d highways Of regional impact. The request for assistance would be reviewed by the Transportation Committee. FR(I" m rr.w.M.C, ��,on To avoid duplication of effort, THAs. sliagain with the approval of the Transportation committee, would be established and brought to the point where their own board could take over operations with significant private sector involvement. initial areas to be considered would be the Techny area and Sears area. To accomplish the above objectives, the following elements would be completed in the first year. A. Completion of a Strategic Transportation Plan for the Conference area (Timeframe A first three months) B. As an outgrowth of A above: 1. Develop and approve consistent transportation policy statements. 2. Prepare a model transportation and traffic mitigation ordinance. promote adoption by conference municipalities by the end of the first year of operation. 3. Prepare and approve a transportation planning process which incorporates otherfmunicipal and developments of a agency input prior to app regional significance. (Timeframe first year) (Currently Pace has established a system where they review developments of a regional impact for bus application. This process would be expanded and institutionalized to include broader applications.) C. As a continued outgrowth of A above: 1. Catalogue. and map municipal economic development plans, pandinq and approved public and private sector development proposals, and active development projects within the conference with regional impact. Where possible, promote transit applications. D. Promote and develop at least two regional transportation projects. (An example of the type of project is the development of the Wisconsin central Line.) Existincr Staff at Nortran brought the communities together to support the project. - 7 FPOM N. M.C. 02,20.1911 14:49 P. 4 The communities have committed, in concept, to fund and build the needed stations. (Currently, the municipalities and Metra are working together to try to make the project a reality.) E. Provide transportation resources on 5-7 specific transportation requests. (Examples are CTA Skokie Swift Station, Techny Willow Road Station and multi - jurisdictional intersections.) F. serve as the start-up team for at least one TMA. W MUNICIPALITY POPULATION CTU MEMBERSHIP PREVIOUS FEES FOR NWMC NORTRAN AND NORTRAN MEMBERSHIP (NON-NWMC) FEES COMMUNITIES ARLINGTON HEIGHTS 71,614 $ 6,781 $ 14,875 BARRINGTON 10,220 968 -- BARTLETT 19,000 1,799 -- BUFFALO GROVE 32,337 3,062 6,787 DEERFIELD 17,430 1,650 3,428 DES PLAINES 55,374 5,243 14,875 ELK GROVE VILLAGE 33,205 3,144 6,787 EVANSTON 73,706 6,979 14,875 GLENCOE 9,200 871 3,428 GLENVIEW 37,000 3,503 6,787 GOLF 482 500 618 HANOVER PARK 32,000 3,030 -- HIGHLAND PARK 30,575 2,895 6,787 HOFFMAN ESTATES 45,174 4,277 -- INVERNESS 5,220 500 -- KENILWORTH 2,708 500 618 LAKE FOREST 18,000 1,704 -- LAKE ZURICH 13,407 1,269 -- LIBERTYVILLE 18,821 1,782 3,428 LINCOLNWOOD 11,921 1,129 3,428 MORTON GROVE 23,747 2,248 6,787 MOUNT PROSPECT 54,630 5,173 NILES 30,363 2,875 6,787 NORTHBROOK 33,206 3,144 6,787 NORTHFIELD 4,930 500 618 PALATINE 37,000 3,503 -- PARK RIDGE 38,704 3,665 6,787 PROSPECT HEIGHTS 13,262 1,256 3,428 ROLLING MEADOWS 21,861 2,070 •- ROSELLE 19,603 1,856 -- ROSEMONT 4,137 500 618 SCHAUMBURG 64,042 6,064 -- SKOKIE 60,278 5,707 14,875 STREAMWOOD 29,498 2,793 -- VERNON HILLS WHEELING 12,500 28,300 1,184 2,680 6,787 WILMETTE 28,229 2,673 6,787 WINNETKA 14,447 1,368 3,428 TOTAL 1,056,131 $ 100,845 ***END*** 710EI TRITON CONSULTING ENGINEERS, LTD. mmNORTH mEACwAM ROAD ~oCHxwBUxa.ILLINOIS 60173-4922 708*605-9600 (FAX) 708-605-9610 February 18, 1991 Mr. John F. Dixon Village Manager Village of Mount Prospect 100 South Emerson Street Mount Prospect, IL 50056 Reference: Engineering Review and Evaluation of the COMPREHENSIVE STonwwxrEn w4wAaEmEmT REPORT Dour Mr. Dixon: We are pleased to provide you with this letter report of our review and evaluation of the Mount Prospect Comprehensive Stormwater Management Report. In general we found the stormwater report to be of high standard and we generally support the recommendations for improvement projects made in the report. figgk_qround and General Findins The Village Board authorized the preparation of o comprehensive atormwater report on March 13. 1e90 by RJN Environmental Associates. The study included the Weller Creek, Femhanville and Des Plaines River Drainage Areas. The study reports were completed on November 5' 1990 and resulted in the recommendations of a comprehensive atormwater improvement program as shown on Page Iv -10 of the report. The need for the recommended projects has existed for many years' In most cases the damage and potential damage from atormwater in each of the drainage areas has significantly increased due to the continual development of the remaining lands in and adjacent to the Village. The availability of the Metropolitan Hater Reclamation District of Greeter Chicago (MwnDGO) deep tunnel and reservoir project (TARP) facilities provides an excellent opportunity for the improvement of the local storm and sanitary, and combined sanitary collection facilities. The village over the last dozen years has had a good program for the maintenance and improvement of the existing system of combined sanitary and storm sewers. This program olono, though, has not been sufficient to alleviate the serious flooding hardships that exist to the residents of Mount Prospect. The adoption and implementation of the recommended projects in the Comprehensive Stormwatar Management program by the village would significantly reduce the extent of flooding. The total cost of the recommended project is $22'71M. The Village administration has recognized and is recommending that significant portions of the Phase VI projects namely' the Weller Creek Erosion control ($5.93M) and Des Plaines River Drainage Area Level ($2.45w) be pursued through the sponsorship of the State of Illinois, Division of Water Resources and the U.S. Army Corps of Engineers ' Some local participation and responsibility is required. But, in general, these projects are of a regional significance and not directly the responsibility of the Village. They will, however, require the earnest and constant sponsorship of the Village Board and Administration to ensure their adoption and construction by the appropriate agencies. The completion of both the Weller Creek and Des Plaines River Area Improvements are of great importance to the Region and Village residents and businesses. The remaining recommended projects are estimated to cost *14'33m and are the total responsibility of the Village. A detailed review has been made by Triton Consulting Engineers staff of the alternatives and recommended improvements for four (4) of the projects. x general review was made of the remaining projects. Our findings are reported in EXHIBIT A which is attached. The "Practical Level" of betterment selected for the improvement projects varies with the condition of the existing system and the cost/benefit of the recommended solution. A 10-yeer level of protection is provided for sanitary ansma while o 25 -year level of protection is recommended for combined sanitary and storm flooding areas. A000rdingly, it should be recognized by the Village that although the program is adopted and the projects constructed, there is no guarantee that the next storm will not exceed m 100-vasr level of protection and thereby question the wisdom of the planned expenditure for a lesser level of protection' That, unfortunately' is the nature of the sxormwuter management improvement design in that it must balance the desired level of protection against the cost. It should be pointed out that the extent of any damage to the community from any storm of great intensity will be greatly reduced by the use of the 25 -year level of protection for storm water and the 10 -year level of protection for sanitary areas. It should also be noted' that in our review of the consultant's recommended projeots, they address only the new level of protection to be provided by the improvement and not the extent of the benefitted residences. We have with the assistance of the Village Public Works employees attempted to determine those residences who are currently being directly impacted by the storms and can expect to directly benefit from the improvements as well as those residences who, while not currently being damaged by stormo, will benefit by receiving the indirect benefit of higher protection. Even though a few of the projects beer a high coot for the number of directly benefiting residencem, we believe that the circumstances leading to the development of the potential for storm damages rests with the flood control standards existing at the time of the issuance of the building permit and the allowance of the building construction by the Village. The storm damage in many of these problem ureas has been aggravated by the continued development of adjacent lands. Accordingly, we believe that the Village has a responsibility to improve the existing chronic flooding areae. A further explanation of the expected benefits to be derived from the planned improvement is contained in the February 5. 1991 letter from RJw Environmental Associates' addressed to the Director of Public Works, which is attached hereto as Exhibit B. The village may also want to consider the adoption of a storm backwater control ordinance for those areae and residences where flooding is infrequent or widely scattered. This program would probably include some financial assistance by the village to the approved improvements. The Mount Prospect Board of Trustees has in prior years worked actively to ensure their residents are protected against flood damage. Accordingly, the Village enjoys the benefits of pro- active community reputation for stormwater management. we believe that with the exceptions of the Weller Creek and Des Plaines River projecta, which were previously recommended for deletion by the Administration and approved by the Board' the Comprehensive Stormwuter Management Report is strongly recommended for adoption and implementation by the village Bourg of Trustees. Very truly yours, A7�z= EER8" LTD. George T. March, P.E. President GTw:slz cc: Mr. Herb L. Weeks Director of Public Works Mr. Chuck Bnncio EXHIBITA Review of the Recommended Improvement Projects "COMPREHENSIVE STVRMwATER MANAGEMENT REPORT" Village of Mount Prospect Introduction The primary purpose of this review was to 1) evaluate the engineering methods used to develop the recommended plan for atormwater management; o) determine if the recommended plans for improved flood control in the Weller Creek, Feehanville, and Des Plaines River drainage areas are the most viable alternatives' , and 3) perform a detailed review of four of the recommended projects to determine their workability and accuracy of the estimated cost. During our review of the Comprehensive Stormwater Management Report, we observed that the Consultant only addressed the new level of protection to be provided by the improvement and not the extent of the benefitted residences and businesses. with the assistance of the village Public works employeau, we have attempted to determine those residences and businesses who are currently being directly impacted by storms (those experiencing recurring flooding) and can expect to directly benefit from the recommended improvements. Likewise, other residences and businesses adjacent to the identified flooding areas and are A_1 connected to the esma etorm, combined and/or sanitary sewer conveyance system will benefit by receiving the indirect benefit of higher protection against future storm events intensified by continuing development in the region. A summary of those directly and indirectly affected by flooding is provided in the Detailed and General reviews of each recommended project. Detailed Review.,. As previously oteted, one of the purposes of the study was to perform m detailed review of four of the recommended plans to determine their workability and accuracy of the estimated oost. We were specifically asked to review the Central and Wa-Pelle Flooding Area project. The other three projects (namely the Gee- Gwun and Golf Area, Stevenson and Thayer Flooding Area, and the Fairview Gardens Sanitary Area projects) were selected at random from the remaining list of projects. During the review of these four projects we: 1) evaluated the capacity of the existing sewer conveyance system based on rainfall intensity charts, sewers sizes, and gradients and general topography information; 2) evaluated the viability of each alternative studied by checking required sewer sizes, outlet oapacitiea, and rainfall intenoitiea, while also determining if other alternatives not studied are worthy of consideration; 3) compared the alternatives to determine if the recommended plan is indeed the best alternative; and 4) determine the accuracy of the estimated costs. In generel, we found the recommended plena to be acceptable. Central and Wa-Pella Floodin During the evaluation of the existing system, we found the rainfall intensities shown for various storm events in Table 1 of the report to be alightly lower than those given in Table 13 of the Illinois State Water Bulletin #TO. We found the existing capacity of the existing 12^ combined sewer to be approximately 3 cfo and the required capacity for a 1 -year storm event is approximately 21 cfa' which both agree with the report. Therefore, the existing 12^ combined sewer is not adequate. We evaluated the five alternatives presented in the report. If the wwRD8C does not allow an increase in flow at the outlet' than Alternative 1 is not a viable proposal. Alternative 2 has sufficient capacity to accommodate e 25 -year storm event while discharging into the NWRD8C interceptor at the existing rete. The sizes for the storm sewers in Alternatives 3, 4. and 5 appear to be adequate. We concur with the recommended plan in the Central and wa-Pelle Flooding Area to construct approximately 4.400 feet of separate relief storm sewer (Alternative 3). This recommended plan would A-3 directly and indirectly benefit approximately 267 homes and e businesses. The cost of implementing this alternative (approximately *1.11M) appears to be the least expensive of the alternatives studied. A detailed review found the estimated capital cost to be acceptable. We analyzed the oepoolty of the existing combined storm sewer conveyance system and found that the capacity of the existing system to be approximately 24 cfm which basically agrees with the report. We evaluated the three alternatives presented in the report. Alternative A involves the construction of m separate storm sewer system and a limited rehabilitation of the existing combined sewer system including disconnections of existing inlets and reconnecting them to the new storm sewer. For Alternative B. it is not clear how the existing combined sewer system will be connected to the combined relief sewer. overflow pipes may he required to transfer the surcharge flow on the existing system to the new relief system. Alternative C, underground detontion, is a costly alternative and provides no additional advantages. We agree that Alternative A. 1700 feet of separate relief storm sawar, is the most viable alternative. It has been estimated that 135 homes will directly and indirectly benefit from this project. The estimated capital coot is $0.68M. we found this coat to be high even after considering miscellaneous and incidental items such as full pavement restoration and repaving' televising of existing sewer linea' repairs and reconstruction of adjacent oewers, flow metering, and other items. These items may or may not be required during construction. Stevenson and Thayer Floodina During our review of the existing conditions, we found the physical characteristics used in the computer modeling (percentages of paved and grassy areas) and shown in Table I1I-2 add up to 110 percent instead of 100 percent. The capacities of the existing storm sewers listed in the report agree with our calculations. For Alternative A, we found that overflow pipes connecting the existing system to the proposed relief sewer may be required at or near the Stevenson Lane and Thayer Street intersection. we had no comments regarding Alternatives B and o (aboveground and underground detention, respectively). Both are more costly than Alternative A. After our detailed raview, we found the recommended plan 000eptabla. It consists of constructing 2,600 feet of relief storm sewer. Approximately 300 homes will directly and indirectly benefit from this project. The estimated capital coat is $1.30M. we found this estimate to be high, even after addressing similar miscellaneous and incidental items described above, such as full pavement restoration and reconstruction of adjacent sewers. These items may or may not be required during onnotruotion. Fairview Gardens San.i.1Ary_,.A!jqA We agree with the existing capacities outlined in the report. The existing system cannot convey peak *et weather flows generated by a 1 -year storm to the lift station located on Horner Luna. Two alternatives were reviewed. Alternative A consists of constructing relief sanitary eo*ars and improvements to the sanitary lift station. we agree that Alternative B. installation of back-up control, is not o viable solution. Even though it would reduce some basement flooding, it would not eliminate street flooding and may transfer flooding to another location. A -O We found Alternative A to be on acceptable plan. Approximately 300 homes will directly and indirectly benefit by this plan. A detailed review of the costs indicated that the estimate stated in the report is high' even after addressing the miscellaneous and incidental items stated previously. Flow metering will be required in this area as well as coordinating with the MWRDGC. General Review We performed a general review of the remaining projects; namely the See-8wun and Milburn Flooding area, See-Gwun and Milburn Sanitary Area, Catalpa and Birch Flooding Area, Hatlen Heights Flooding Area, Hatlen Heights Sanitary Area, Clearwater Flooding Area, Weller Creek Study Area, orumlay and melao park Erosion Control. Prospect Manor and North main Flooding Area. and Deo Plaines River Drainage Area. We reviewed the alternatives presented and found them to be acceptable. In genera}' we agree with the recommended plans. The capital coat estimates also appear to be high, which is consistent with what we found during the detailed review of three of the four recommended plana previously discussed. For information purposes, we have included a summary of each of the remaining recommended plans described in the Comprehensive Stormweter Management Report. The summaries include descriptions recommended plan, the estimated capital cost, and estimates of the number of residences and businesses that will directly and indirectly benefit by the recommended plan. Area The existing stnrmweter drainage system in the See-Gwun and Milburn Flooding Area has insufficient capacity to convey runoff generated by a 2 -year frequency, 60 -minute duration storm to Weller Creek. The recommended plan consists of providing a 25 - year level of protection against overland flooding through construction of a 6.6 acre-feet above -ground detention facility at Lincoln Junior High School, construction of 1'850 feet of relief storm sewer, and construction of a side flow weir. The estimated capital cost is $1.65 million. The recommended plan would directly and indirectly benefit approximately 204 homes and 14 multi -family buildings. See-Gwun and Milburn Sanitary_A The existing sanitary sewer system in the Gee-Gwwn and Milburn Sanitary Area has insufficient capacity to convey peak wet weather flow generated by a 25 -year frequency, 30 -minute duration storm to the MWRDGC interceptor. The recommended plan consists of preventing surcharging of the MWRDGC interceptor on Lincoln Street from hydraulically restricting the sanitary sewer system sanitary relief station. The estimated capital costs to provide o 10 -year level of protection is $0.38 million, The recommended plan would directly and indirectly benefit approximately 204 homes and 14 multi -family buildingm. The existing storm sewer system in the Catalpa and Birch Flooding Area has insufficient capacity to convey runoff generated by e 2 - year. 60 -minute duration storm event. The recommended plan consists of providing u 25 -year level of protection against overland flooding by constructing approximately 700 feet of relief storm sewer. The estimated capital cost is $0-24 mi/lion. The recommended plan will directly and indirectly benefit approximately 76 homes. Although this project does not directly benefit as many residences as other projects in the urogram we believe it should still be included within the program but at m lower priority. The existing storm sewer system in the Hetlen Heights Flooding Area has insufficient capacity to convey runoff generated by a 5 - year. 60-m1nute duration storm event to the 72 -inch diameter interceptor sewer which has capacity for e 50 -year storm event. The recommended plan consists of providing a 25 -year level of protection by constructing approximately 2'650 feet of relief storm sewer to convey eturmwater from five low points in the area to the existing 72 -inch diameter storm sewer that discharges into the Crumley Detention Basin' The estimated capital cost is $0.88 million. The recommended plan will directly and indirectly benefit approximately 114 homes. The existing sanitary sewer system in the Hstlen Heights Sanitary Area hes insufficient capacity to convey peak *et weather flow generated by a 1 -year, 30 -minute duration storm event to s MwRDGC interceptor. The recommended plan consists of increasing the capacity of the existing sanitary conveyance system to a 10 -year level of protection through construction of approximately 3,000 feet of parallel sanitary relief sewer. It also includes improvements to the sanitary relief station located near Rob Road. However' an increased discharge into the interceptor may not immediately be allowed by the MwRDGC. Therefore, this project may be delayed in its implementation. The estimated capital costs is $0'76 million. The recommended plan will directly and indirectly benefit approximately 325 homes. The 66 -inch diameter sewer conveying flow from the Clearwater Detention Basin and the Clearwater Flooding area to the Mount Prospect Country Club golf course hes insufficient capacity to A -1O convey flow generated by a 100 -year, 12 -hour duration storm which can be detained and released by the Clearwater Detention Basin. Overflowing of the basin occurs when the 66 -inch diameter sewer cannot convey the flow. The recommended plan consists of providing a 100 -year level of protection by constructing a new relief storm sewer from the Clearwater Detention Basin to the Mount Prospect Country Club Golf Course Creek and constructing a new junction chamber at the Country Club Golf Course outfall. Coordination with the Golf Course is essential. The recommended plan would provide protection against overflowing of the Clearwater Detention Basin for a storm event equal to the August 13-14' 1987 storm which was greater than a 300 -year storm. The estimated capital cost is $0.60 million. This project indirectly benefits the Colonial Heights subdivision and the Elk Ridge Villa subdivision south of Golf Rood both east and west of Busse Road. Due to the large area and the number of residents impacted by this project' it is recommended that it be raised to a higher construction priority, Weller Creek exhibits severe erosion between School Street and Elmhurst Avenue and between Lincoln Street and Central Road' moderate erosion between Elmhurst Avenue and Gee-Gwun Avenue and minor erosion between See-Gwun Avenue and Lincoln Avenue. The elevation of the Emerson Street bridge is below the 100-yaar flood stage of Weller creek. The recommended plan is to improve conveyance characteristics by lining and realignment of the channel and bridge replacement, and provide erosion control with rip rap. The total estimated capital costs is $6.08 million. The Division of Water Resources has previously borne the responsibility for erosion protection measures for Weller Creek and should be requested to sponsor this project at the earliest date possible. Under prior agreements the Village would be required to secure the rights-of-way construction easement necessary to construct the project and agree to the maintenance of the Creek. Bridge adjustments and rehabilitation would also be the responsibility of the village. Erosion control of the inlet spillways in the Crumley Detention Basin and the Melas Park Detention Basin is recommended. The estimated capital cost is $0.05 million. I Manor and North Main F.I.00dip9—Aor:�L! The existing combined sewer systems in the Prospect Manor and North Main Flooding Areas have insufficient capacity to convey runoff generated by a 2 -year, 60 -minute storm event to the MWRDGC interceptor. The recommended plan consists of increasing the capacity of the existing combined sewer system to a 25 -year level of protection through construction of approximately 8,500 feet of combined relief sewer from the flooding area to the MNRDGC TARP drop shaft. The estimated capital cost is $4.95 million. The recommended plan will directly and indirectly benefit approximately 1459 homes, 25 businesses, and 2 institutions. When the Deo Plaines River reaches a 5 -year flood stage, the Des Plaines River causes the system outfalls to become ineffective in transporting runoff out of the Study Area resulting in flooding. Simultaneous occurrence of rainfall when the Das Plaines River is at a 2 -year or greater flood stage is the primary cause of flooding along Park Drive during moderate storm events. The Recommended plan for improved flood control in the Dee Plaines River Drainage Area and increase the level of protection to o 25 -year storm consists of constructing a levee and pumping facilities east of River Road, extending the existing Study Area outfalls to the pumping facilities, construction of a gauging station to transmit Des Plaines River elevations to the Village of Mount Prospect Department of Public Works, construction of relief sewer along Seminole Lane to convey runoff generated in the City of Prospect Heights, and construction of a relief sewer on Seneca Lane to improve conveyance capacity of the existing 4-13 storm sewer system. The estimated capital construction cost is $0.4 million for backwater control and piping, which is the responsibility of the village. and $2.15 million for the levee and pumping facilities, which is the responsibility of the U.S. Army Corps of Engineers. However, they will probably require a local cost participation of 30 percent which could be funded by the M#RDGC' Illinois Division of Water Reeouroes, and local governmental bodies. EXHIBIT B RJRJN ENVIRONMENTAL ASSOCIATES, INC. CONSULTING ENGINEERS February 5, 1991 Mr. Herbert L. Weeks Director of Public Works Village of Mount Prospect 1700 West Central Road Mount Prospect, IL 60056 Dear Mr. Weeks: This letter is in response to Triton Consulting Engineers, Ltd. request for additional information regarding the November, 1990 Stormwater Management Reports. The response to each item included in the request is given in the following paragraphs: RJN Environmental Associates, Inc. has participated in the development of ordinances pertaining to building codes, zoning, development, and the disconnection of extraneous sources of stormwater from combined and separate sanitary sewer systems. Although RJN Environmental is aware of and has been consulted in preparation of ordinances pertaining to backwater control, we do not have such an ordinance in our files. In general, RJN Environmental agrees with the concept of an ordinance for Village participation in funding of installation backwater control. However, the Village should carefully consider the content of such an ordinance. Key items that need to be addressed include but are not limited to liability incurred by the Village if a backwater control device operates incorrectly or fails to eliminate basement flooding, a policy regarding backwater control devices installed prior to implementation of the ordinance, development of criteria to establish eligibility of backwater control projects, and levels of participation by the Village in funding of eligible projects. RJN Environmental agrees with the concept of individual backwater control in areas where flooding is infrequent or widely scattered. In areas where flooding is pronounced, backwater control may transfer a flooding problem from one home to another or aggravate existing flooding in other parts of the system. In these cases, the Village should consider detention, retention, and increased conveyance capacities of its existing stormwater infrastructure as well as individual backwater control. 202 W. FRONT STREET WHEATON, ILLINOIS 60187 (708) 682-4777 Mr. Herbert L. Weeks February 5, 1991 Page Two RJN Environmental will make previously prepared documents including foam core boards available for presentation at the February 12, 1991 Village Board Meeting. Implementation of recommendations presented in the November, 1990 reports will directly benefit those properties located in the flooding area and indirectly benefit residents located adjacent to identified flooding areas that are connected to the same stormwater, combined, or sanitary sewer conveyance system. Direct benefits will consist of increasing the level of protection against flooding in each flooding or sanitary area evaluated as specified in the November, 1990 reports. Properties receiving direct benefits include properties located in the immediate flooding area and properties located on streets where the project would be constructed. Indirect benefits consist of increasing the level of protection against flooding in areas that are connected to a stormwater, combined, or sanitary sewer conveyance system that would be relieved through construction of recommended improvements. An increase in the level of protection against flooding provided to properties in these areas would be achieved through reducing the peak load on or eliminating hydraulic restrictions in the existing conveyance system. It should be noted that tributary areas or areas "upstream" of an area experiencing flooding often contribute significantly to the flooding in an affected area. These "upstream" areas are currently receiving a benefit from the area experiencing flooding which is acting as a reservoir for the "upstream" area by storing water generated in the "upstream" area in basements and on streets. For this reason, "upstream" areas should be considered as part of the area affected by construction of recommended improvements even though they may not receive direct or indirect benefits. The primary objectives of the November, 1990 reports was to present alternatives and recommendations for reducing the magnitude and frequency of flooding in selected areas of the Mr. Herbert L. Weeks February 5, 1991 Page Three Village without increasing or causing flooding in other areas of the Village. RJN Environmental evaluated the impact of recommended improvements on existing conveyance systems and receiving streams including Weller Creek and the Feehanville Ditch. Results of the evaluation showed that implementation of recommended improvements would improve the operation of existing conveyance systems relieved by the improvements without increasing overland flooding caused by receiving streams overflowing their banks. It should be noted that construction of the Metropolitan Water Reclamation District of Greater Chicago's (MWRDGC) deep tunnel and reservoir project (TARP) has resulted in a reduction of water entering Weller Creek through MWRDGC overflow structures during and following storm events. Construction of the deep tunnel portion of the O'Hare TARP system is essentially complete. Construction of the reservoir portion of the project was initiated in 1990. Completion of the reservoir portion of the project will result in additional benefit to properties adjacent to Weller Creek as a result of MWRDGC overflows activating less frequently during or following storm events. It= No. §: ederal or. a _ a Fundina As presented in the November, 1990 Des Plaines River Drainage Area Stormwater Management Study, the U.S. Congress may approve funding of up to 75 percent of eligible project costs after review of the current U.S. Army Corps of engineers 42 month feasibility study. The preliminary opinion of probable capital cost to implement the recommended plan is $2.55 million. Approximately $2.2 million of this cost is eligible for federal funding. Assuming 75 percent funding of eligible costs, the local cost incurred by the Village and the local sponsor, IDOT, would be approximately $0.9 million. It is anticipated that funding for construction of eligible portions of the recommended plan in the Des Plaines River Drainage Area will not be available until approximately the end of 1995. In addition to the Des Plaines RJLver Drainage Area, approximately $5.8 million out of $6.1 million of improvements to the Weller Creek Channel may be eligible for funding through the Illinois Department of Transportation - Division of water Resources (IDOT/DWR). This funding is not readily available and would require lobbying efforts on behalf of the Village by local representatives. There is a possibility that the state will not fund any improvements to the Weller Creek Channel. Mr. Herbert L. Weeks February 5, 1991 Page Four However, it is recommended that the Village exhaust all funding possibilities prior to construction of improvements to the Channel. We sincerely hope this information is satisfactory for your purposes at this time and look forward to a continuing professional relationship. Very truly yours, R,TN ENVIRONMENTAL ASSOCIATES, INC. Randall L. Patchett Project Manager RLP:njc\427 cc: Mr. George T. March, Triton Consulting Engineers, Ltd.