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HomeMy WebLinkAboutResolutions - 2001.12.13 - 26348MISCELLANEOUS RESOLUTION #01335 BY: Fran Amos, District #5; Nancy Dingeldey, District #11; Thomas Law, District #12; Shelley Taub, District #13 IN RE; ENVIRONMENTAL INFRASTRUCTURE FUND REIMBURSEMENT FOR PROJECT IN THE CHARTER TOWNSHIP OF WEST BLOOMFIELD - FY 2001 & 2002 ALLOCATION TO THE OAKLAND COUNTY BOARD OF COMMISSIONERS Chairperson, Ladies and Gentlemen: WHEREAS the Oakland County Board of Commissioners established an Environmental Infrastructure Funds and Disbursement Policy per Miscellaneous Resolution #99093 in an effort to increase the share of dollars flowing into infrastructure projects for the County and its cities, villages and townships (CVTs); and WHEREAS pursuant to the Disbursement Policy, West Bloomfield Township has submitted a resolution of authorization to the County for reimbursement of expenses incurred in connection with an eligible environment remediation of improvement project; and WHEREAS West Bloomfield Township is requesting reimbursement for a study of the Evergreen-Farmington System inflows and infiltration; and WHEREAS the FY 2001 and FY 2002 authorized amount of funding for West Bloomfield Township is $291,305.04 annually from the Environmental Infrastructure Fund as repayment to West Bloomfield Township for expenses incurred in connection with environmental remediation or improvement projects. NOW THEREFORE BE IT RESOLVED that the Oakland County Board of Commissioners approves the projects submitted by West Bloomfield Township as eligible for reimbursement from the Environmental Infrastructure Fund. BE IT FURTHER RESOLVED that the Board authorizes an FY 2001 and FY 2002 appropriation in the amount of $291,305.04 annually from the Environmental Infrastructure Fund (Account #90-263030-41000-3985) to repay West Bloomfield Township for expenses incurred in connection with environmental remediation or improvement projects, once proper invoices are presented. Chairperson, I move the adoption of the foregoing resolution. Steven Kaplan Trustee Deborah L. Macon Trustee Allen Adelberg Trustee Stuart Brickner Trustee David Flaisher Supervisor Sharon A. Law Township Clerk Denise D. Hammond Treasurer Sincerely, I ( Denise D. Hammond, CGFM Treasurer December 5, 2001 Thomas Ott, Manager Oakland County Fiscal Services Division 1200 N Telegraph Pontiac, 114I 48341 RE: Environmental Infrastructure Fund Reimbursement Request Dear Tom: Pursuant to Oakland County Board of Commissioners Miscellaneous Resolution (MR) 99093, the Charter Township of West Bloomfield hereby requests reimbursement under Oakland County's Environmental Infrastructure Fund Program for expenses incurred in connection with an eligible environmental remediation or improvement project undertaken by our Township. Attached in support of this request are the following: • Attachment A.: Project description Attachment B.: Governing Body Resolution • eiV0A • Attachment C.: Expense invoices in the amount of $1)745.13. 61/.. •NR The Township understands that the review and processing of this reimbursement request will be governed by the provisions of MR 99093 and certifies that all expenses submitted for reimbursement were incurred in connection with a qualifying environmental remediation or improvement project. If you have any questions concerning this matter, please contact me at 248-451-486q. Thank you for your assistance. cc: Debby Younker, Water/Sewer Steve Brideau, Finance (248) 451-4800 Fax (248) 451-4787 TDD (248) 451-4899 4550 Walnut Lake Road • West Bloomfield, MI 48325-0130 Ayres, Lewis, Norris & May, Inc. Engineers • Planners • Surveyors 3959 Research Park Drive Ann Arbor, Michigan 48108-2219 734-761-1010 734-761-1200 (Fax) ALNM@alnm.com (E-Mail) www.alnm.com Principats: Abe A. Muntah, P.E. Alan W. Rothe. P.E. Ashok K. Singhal, P.E. Dana M. Dougherty, P.E. Roger B. Gaugler, P.E. April 23, 2001 Mr. Kenneth F. Vogras Water and Sewer Director Charter Township of West Bloomfield 2400 Haggerty Road West Bloomfield, Michigan 48323-0130 Re: Proposal of Engineering Services Flow Metering and Infiltration and Inflow (I/I) Study Dear Mr. Vogras: As you are aware, the Oakland County Evergreen-Farmington Sewage Disposal System has experienced high flows and bypasses due to the presence of excessive inflow and infiltration (I/I). Recent studies performed by the Oakland County Drain Commissioner's (0CDC) office have suggested that the sources of the excessive I/I are contained within the communities that discharge to the interceptor system, including West Bloomfield Township. In order to verify the conclusion of the OCDC, and determine the locations and sources of any I/I within the Township's sanitary collection system, we have prepared this proposal for performing a flow metering and infiltration and inflow (In study of the Township's sanitary collection system. The study will investigate whether the observed surcharging and bypassing in the County system is caused by sources of I/I within the Township's system or is caused by the downstream interceptor system operated by the OCDC. If excessive I/I is found in the upstream system, the study will also determine the locations and sources of any excessive I/I within the Township's system, and include a preliminary cost effectiveness evaluation of I/I source removal versus constructing sanitary storage facilities. At your request; we have reviewed the Township's sanitary collection system and the permanent flow metering system operated by the OCDC. The OCDC currently maintains nineteen (19) permanent flow meters within West Bloomfield Township which are capable of splitting the Township into approximately 12 sub-areas. - Therefore, we have concluded that initial temporary flow metering in the Township is not necessary. In order to perform the study, data will be collected from the OCDC meters for the period of March 1, 2000 through May 31, 2001. We have contacted the OCDC and verified that the data is available and can be used for the study. 47"):•n rtv Prnleo on FecycteO Pipe, "nnalitv Innnvatinn Rinna 1.2" c Mr. Kenneth F. Vogras April 23, 2001 Page 2 AYRES, LEWIS, NORRIS & MAY, INC. Abe A. Munfah, P.E. Chairman of the Board hilip N. Loud, Senior Associate' We have prepared the attached work plan to prepare the flow monitoring and I/I study. In order to efficiently complete the study, we have divided the project into two (2) phases. The first phase of the project will involve collecting flow data from six (6) flow meters operated by the OCDC that are downstream of the Township in order to complete a simplified I/I analysis. This simplified I/I analysis will be focused on determining whether the observed surcharging and bypasses are caused by downstream conditions in the County interceptor system or from excessive I/I upstream in the local system(s). If the simplified I/I analysis shows that there is excessive I/I from the upstream system, then the second phase of the study will be performed. The second phase of the project will involve collecting flow data from an additional thirteen (13) flow meters operated by the OCDC in order to complete a detailed I/I analysis of the Township system. The detailed I/I analysis will determine the locations and sources of the excessive I/I within the 12 sub-areas of the Township and include utilizing simplified techniques to verify the sizing of require sanitary retention facilities. We propose to perform the first phase of the study for a not-to-exceed fee of $20,000. We anticipate that the first phase can be completed within 6 to 8 weeks after authorization to proceed and receipt of the data from the OCDC. We propose to perform the second phase of the study for a not-to-exceed fee of $35,000. We anticipate that the second phase can be completed within 8 to 10 weeks after the completion of the first phase. We would like to thank you for the opportunity to prepare this proposal for this interesting and important project. Please feel free to contact us if you have any questions or need any additional information. Very truly yours, AAM/PNL/ 99909-01 Alb. Ayres, Lewis, Norris & May, Inc. Engineers • Planners • Surveyors Charter Township of West Bloomfield Flow Monitoring and Inflow / Infiltration Study Work Plan April 2001 BACKGROUND Historically, the Evergreen-Farmington Sewage Disposal System has experienced high flows and bypasses due to the presence of excessive inflow and infiltration (I/I). Recent studies performed by the Oakland County Drain Commissioner (OCDC) have suggested that the sources of the excessive I/I are contained within the communities that discharge to the interceptor system. However, a review of the sanitary bypasses in the vicinity of West Bloomfield Township shows that the bypasses are caused by the throttling of the Walnut Lake Pump Station #1 by the OCDC. Therefore, it is unclear whether these bypasses are caused by excessive I/I in the Township's sanitary collection system or caused by surcharging in the downstream OCDC interceptor system. In order to investigate whether the Township's sanitary collection system contains excessive I/1, the Township has asked Ayres, Lewis, Norris & May, Inc. (ALNM) to prepare a proposal for a flow monitoring and I/1 study. The project will focus on the portion of the Township tributary to the Evergreen-Farmington Sewage Disposal System. The purpose of the study is to determine the quantity and sources of I/I entering the sanitary collection system and to provide an understanding of the current status of the system. The study will also be used to determine the impact that downstream surcharging in the County system may have on the Township's sanitary collection system. The results of the study will aid the Township in evaluating the cost effectiveness of removing I/I and verify the basis of design for a potential future sanitary equalization basin. The flow chart attached to this work plan presents a typical project flow chart for improving a sanitary collection system and reducing sanitary sewer overflows to meet regulatory requirements. As the flow chart shows, the initial steps of the collection system investigation are flow monitoring and I/I analysis. The I/I analysis can be used to determine if it may be cost effective to remove sources of I/I or construct large capital improvements such as a retention basin to deal with the 1/I. As the flow chart shows, if the I/I analysis shows that removing I/I may be cost effective, it could be necessary to perform sewer rehabilitation. Therefore, this work plan includes performing flow monitoring and an 111 analysis to perform a preliminary cost effectiveness evaluation of removing I/I versus constructing a sanitary retention basin. Developing a calibrated model of the system and a basis of design for the proposed improvements are not included in this work plan since regional studies prepared by the OCDC have already performed detailed modeling of the Evergreen-Farmington Sewage Disposal System. However, simplified techniques will be used to verify the preliminary sizing for required collection system improvements performed as part of previous studies by others. DISCUSSION OF FLOW METERING We have reviewed the Township's sanitary collection system and the permanent, regional flow meters operated by the OCDC. The OCDC flow metering system contains approximately 19 meters within West Bloomfield Township. These meters are capable of differentiating the flow from West Bloomfield Township versus Orchard Lake and Bloomfield Township. In addition, these meters are capable of splitting West Bloomfield Township into approximately 12 sub- areas. Therefore, based on the review of the OCDC metering system, we have concluded that temporary flow metering performed by the Township is not necessary. OVERVIEW OF PROJECT APPROACH In order to efficiently complete the I/I analysis, we have divided the project into two (2) phases. The first phase of the project will involve collecting flow data from the six (6) downstream flow meters operated by the OCDC in order to complete a simplified I/1 analysis. This simplified I/I analysis will be focused on determining whether the observed surcharging and bypasses are caused by downstream conditions in the County interceptor system or from excessive I/I upstream in the local systems. Since the flow data will be collected from the six downstream flow meters, it will not be possible to isolate the sources of observed Ill or differentiate the flow from West Bloomfield Township versus Orchard Lake and Bloomfield Township. If the simplified the UI analysis shows that there is excessive I/I from the upstream system, then the second phase of the study will be performed. The second phase of the project will involve collecting flow data from an additional thirteen (13) flow meters operated by the OCDC in order to complete a detailed I/I analysis. This detailed I/I analysis will isolate the flows from West Bloomfield Township and Orchard Lake and Bloomfield Township. The total of 19 flow meters examined will result in splitting the West Bloomfield Township sanitary collection system into approximately 12 sub-areas for detailed I/I analysis. The detailed I/1 analysis will determine the locations and sources of the excessive I/I within the 12 sub-areas. Furthermore, the detailed I/I analysis will include utilizing simplified techniques to verify the sizing of require sanitary retention facilities. PHASE I - COLLECT DOWNSTREAM OCDC DATA AND PERFORM SIMPLIFIED I/I ANALYSIS 1. Obtain Flow Monitoring Data Under this task, ALNM will review and process the flow data collected from the OCDC. This will include data from six (6) permanent flow meters and three (3) permanent rain gauges. The data will be collected for a fifteen (15) month period from March 1, 2000, through May 31, 2001. The data will be processed, quality checked, graphed and summarized. Specific work items of this task include: Obtain, review and process flow data from the 6 permanent OCDC flow meters and 3 permanent OCDC rain gauges. • Perform data processing and quality assurance / quality check of all data received. Prepare the data in a format for incorporation into a final report that summarizes the flow monitoring results and provides graphs and electronic copies of the processed data. 2. Perform Simplified I/I Analysis The I/I analysis will be prepared utilizing the data collected from the OCDC. The I/I analysis will be performed for the area tributary to the Evergreen-Farmington Sewage Disposal System. Specific work items of this task include: • Prepare the data processed during the flow monitoring study for the 11I analysis. Review the findings of the OCDC's Evergreen-Farmington Sewage Disposal System Phase I Study dated March 1999. Review the flow data to determine the cause of surcharges and overflows. This analysis will determine whether bypasses are caused by excessive 1/1 in the Township's sanitary collection system or caused by surcharging in the downstream OCDC interceptor system. PHASE II- COLLECT ALL OCDC DATA AND PERFORM DETAILED I/1 ANALYSIS This phase of the project will involve collecting flow data from an additional thirteen (13) flow meters operated by the OCDC in order to complete a detailed I/I analysis. The detailed I/I analysis will determine the locations and sources of the excessive I/I within approximately 12 sub-areas. Furthermore, the detailed I/I analysis will include utilizing simplified techniques to verify the sizing of require sanitary retention facilities. 1. Obtain Flow Monitoring Data Under this task, .ALNM will review and process the additional flow data collected from the OCDC. This will include data from thirteen (13) additional permanent flow meters. This will result in the collection of data from nineteen (19) total flow meters, including the data collected during Phase I. The data from the nineteen flow meters will result in isolating the flows from the Township and Orchard Lake and Bloomfield Township, as well as split the Township into approximately twelve (12) sub-areas. The data will be collected for a fifteen (15) month period from March 1, 2000, through May 30, 2001. The data will be processed, quality checked, graphed and summarized. Specific work items of this task include: • Obtain, review and process flow data from the 6 permanent OCDC flow meters and 3 permanent OCDC rain gauges. • Perform data processing and quality assurance / quality check of all data received. Prepare the data in a format for incorporation into a final report that summarizes the flow monitoring results and provides graphs and electronic copies of the processed data. 2. Perform Detailed I/I Analysis The I/I analysis will be prepared utilizing the data collected from the OCDC. The I/I analysis will be performed for the area tributary to the Evergreen-Farmington Sewage Disposal System. Specific work items of this task include: Prepare the data processed during the flow monitoring study for the I/I analysis. Verify the land area, house count and population of each sub-area. Develop Thiessen polygons for the rain gages to be used in analyzing the rainfall data. Develop capture coefficients for each sub-area for large storms. The capture coefficient is the fraction of precipitation entering the sanitary system and can be useful in evaluating Identify Sewer Defects and Rehabilitation Program Alternative Analysis Utilizing Sewer Model - Retention of Peak Flow - Transport and Treat Peak Flow Construct Recommended Sewer Rehabilitation Recommend Cost Effective Alternative in a Project Plan Report Perform Post Rehabilitaion Flow Monitoring Construct Recommended Alternative Charter Township of West Bloomfield Flow Monitoring and Infiltration / Inflow Study Flow Chart Flow Monitoring Inflow/Inflitration (Id) Analysis Is I/I Cost Effective to Remove? - Perform Simplified Hydrologic/Hydraulic Analysis of System - Utilize Analysis to Develop Preliminary Alternatives for Peak Flow Control - Develop Cost of Conceptual Facilities to Handle Peak Flow - Perform Cost Effectiveness Analysis on Ill Removal Included in this Proposal YES / --...._.-- N NO Mir OM Taft 1 To be done It at later date Perform Sewer System Evaluation Survey (SSES) - Smoke Testing - Sewer Televising - Manhole Inspection - Nighttime Infiltration Flow Monitorig Perform Detailed Modeling of Sewer System - Expand Analysis for More Accuracy - Include any I/I Reduction - Model Potential Facility Locations - Finalize Size of Potential Facilities RESOLUTION AUTHORIZING ENVIRONMENTAL INFRASTRUCTURE FUND EXPENSE RE1NBURSEMENT REQUEST WHEREAS, upon the recommendation of the Oakland County Executive, the Oakland County Board of Commissioners has established an Environmental Infrastructure Fund Program to assist Oakland County cities, villages and townships in addressing clean water and storm water needs; and WHEREAS Oakland County's Environmental Infrastructure Fund Program authorizes Oakland County cities, villages and townships to apply for reimbursement of eligible expenses incurred in connection with environmental remediations or improvements relating to ground and/or surface water, water supply, sewer and/or drainage systems and/or water pollution control efforts incurred as part of a city, village or township road project; and WHEREAS the Charter Township of West Bloomfield, Oakland County, Michigan has incurred expenses in connection with environmental remediation or improvement project(s) believed to be eligible for reimbursement under Oakland County's Environmental Infrastructure Fund Program. NOW THEREFORE BE IT RESOLVED that this Board authorizes and directs its Supervisor as agent for the Township of West Bloomfield, in the manner and to the extent provided for under Oakland County Board of Commissioner Miscellaneous Resolution 99093, to request reimbursement of eligible environmental remediation or improvement project expenses under Oakland County's Environmental Infrastructure Fund Program. DATED 06/27/00 SIGNED CERTIFIED I, SHARON A. LAW, duly appointed and Authorized Clerk of the Charter Township of West Bloomfield, do hereby certify that the above is a true and correct copy of a resolution passed and approved by the Township Board on the 26th day of June, 2000. ON A. LAW Township Clerk t s Resolution #01335 December 13, 2001 The Chairperson referred the resolution to the Finance Committee. There were no objections.