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CONSTITUTION HALL • 525 WEST ALLEGAN STREET • P.O. BOX 30473 • LANSING, MICHIGAN 48909-7973
Michigan.gov/EGLE • 800-662-9278
STATE OF MICHIGAN
DEPARTMENT OF ENVIRONMENT, GREAT LAKES, AND ENERGY
LANSING
February 1, 2021 TO: All Interested Citizens, Organizations, and Government Agencies SUBJECT: FINDING OF NO SIGNIFICANT IMPACT Charter Township of Monitor Wastewater System Improvements Clean Water State Revolving Fund Project No. 5718-01 The purpose of this notice is to seek public input and comment on a preliminary decision by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) that an Environmental Impact Statement (EIS) is not required to implement recommendations discussed in the attached Environmental Assessment of a wastewater collection system improvement project plan submitted by the applicant mentioned above. HOW WERE ENVIRONMENTAL ISSUES CONSIDERED? Part 53, Clean Water Assistance, of the Natural Resources and Environmental Protection
Act, 1994 PA 451, as amended, being Sections 324.5301 to 324.5316 of the Michigan Compiled Laws Annotated, requires EGLE to evaluate all environmental implications of a proposed wastewater project. EGLE has done this by incorporating a detailed analysis of the environmental effects of the proposed alternatives in its review and approval process. A project plan containing information on environmental impacts was prepared by the municipality and reviewed by the State. EGLE has prepared the attached Environmental Assessment and found that the proposed project does not require the preparation of an EIS.
WHY IS AN EIS NOT REQUIRED? Our environmental review concluded that no significant environmental impacts would
result from the proposed action. Any adverse impacts have either been eliminated by changes in the project plan or will be reduced by the implementation of the mitigative measures discussed in the attached Environmental Assessment.
HOW DO I GET MORE INFORMATION? A map depicting the location of the proposed project is attached. This information is also
available on our website at Michigan.gov/CWSRF under “Related Links.” The Environmental Assessment presents additional information on the project, alternatives that were considered, impacts of the proposed action, and the basis for our decision. Further information can be obtained by calling or writing one of the contact people listed below.
GRETCHEN WHITMER GOVERNOR
LIESL EICHLER CLARK DIRECTOR
Finding of No Significant Impact Page 2 February 1, 2021 HOW DO I SUBMIT COMMENTS? Any comments supporting or disagreeing with this preliminary decision should be submit-
ted to me at EGLE, Constitution Hall, P.O. Box 30457, Lansing, Michigan 48909-7957. We will not take any action on this project plan for 30 calendar days from the date of this notice in order to receive and consider any comments.
WHAT HAPPENS NEXT? In the absence of substantive comments during this period, our preliminary decision will
become final. The applicant will then be eligible to receive loan assistance from this Agency to construct the proposed project.
Any information you feel should be considered by EGLE should be brought to our attention. If you have any questions, please contact Ms. Kathy Roeder, the project manager, at 517-897-2579, or by email at [email protected], or you may contact me. Your interest in this process and the environment is appreciated. Sincerely, Kelly Green, Administrator Water Infrastructure Financing Section Finance Division 517-284-5433 Attachment
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DEPARTMENT OF ENVIRONMENT, GREAT LAKES, AND ENERGY Clean Water State Revolving Fund
Charter Township of Monitor, Bay County Environmental Assessment
February 2021
PROJECT IDENTIFICATION
Applicant:
Address:
Authorized Representative:
Project No.
Charter Township of Monitor
2483 E. Midland Road Bay City, Michigan 48706
Mr. Terry Spencer, Township Supervisor (Amended February 2, 2021)
5718-01
PROJECT SUMMARY
The Charter Township of Monitor (Monitor Township) is located immediately west of Bay City in Bay County. Monitor Township contains a land area of 37 square miles and is bordered by Williams Township, Kawkawlin Township, Bangor Charter Township, Frankenlust Township, and Bay City. According to the United States Census as reported by the East Michigan Council of Governments (EMCOG), Monitor Township had a residential population of 10,735 in 2010. EMCOG projects Monitor Township will have a population of 10,618 by the year 2040.
The proposed project will rehabilitate 13 sections of pipe (totaling 3,530 linear feet), 137 manholes, and 11 pump stations in the Monitor Township sanitary sewer system. The proposed project will take approximately one year, beginning in May 2021 and concluding in July 2022. Monitor Township anticipates financing the project with a low-interest Clean Water State Revolving Fund (CWSRF) loan of $2,450,000. The Michigan Department of Environment, Great Lakes, and Energy (EGLE) anticipates that Monitor Township will receive $8,750 in principal forgiveness for energy efficiency improvements on Pump Station 19. Monitor Township plans to pay the debt service on the loan through an average increase per residential user of $8.80 to their quarterly rate.
EXISTING SYSTEM AND PROJECT NEED
The Monitor Township wastewater collection system consists of approximately 43 miles of gravity sanitary sewer ranging between 8 and 24 inches in diameter, 848 manholes, 11 pump stations, and 3.6 miles of forcemain. Twenty-three miles of the current sanitary sewer system were built in the 1970’s, primarily with vitrified clay pipe. The system now contains 3.9 miles of vitrified clay pipe, 33 miles of polyvinyl chloride (PVC) pipe, and 6 miles of reinforced concrete pipe. The reinforced concrete pipe is primarily used for large-diameter trunk lines. The sanitary sewer system is separated from the stormwater collection system and has no sewer overflows, bypasses, or direct outlets into any drains, rivers, or streams.
Monitor Township does not own or operate a wastewater treatment system. Monitor Township sends its flows to the West Bay County Regional Wastewater Treatment Plant (Bay County Regional WWTP). Monitor Township has an agreement with the Bay County Regional WWTP affording them a certain amount of the WWTP capacity. Monitor Township currently sends an average of 887,000 gallons per day for treatment. The Bay County Regional WWTP discharges to the Saginaw River and operates under National Pollutant Discharge Elimination System
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(NPDES) permit number MI0042439, which will not be affected by the proposed project discussed herein. Funded by a 2014 Stormwater, Asset Management, and Wastewater (SAW) grant from EGLE, Monitor Township completed a wastewater asset management plan (WWAMP). To develop the WWAMP, Monitor Township televised 96 percent of the sanitary sewer system and coded infrastructure defects according to criticality, per the National Association of Sewer Service Companies (NASSCO) Pipeline and Manhole Assessment Certification Programs (PACP, MACP). Seven pipe segments have significant structural defects (PACP ratings 4 or 5), including deformations, longitudinal cracks, joint offsets, holes, and fractures. Four of those pipes have vertical deformations that will require open-cut excavation and replacement. There are six additional pipe segments with less severe defects that are immediately adjacent to the critical pipe segments. Fourteen manholes have significant structural defects (MACP rating 4 or 5) in the form of cracked or offset frames and broken chimneys; 123 other manholes are inaccessible for maintenance due to broken/warped access bolts, overgrowth of turf or roots, and being covered by pavement or asphalt. According to a June 2018 Flow Metering Study, the structural flaws are likely contributing significant inflow and infiltration to the wastewater collection system during wet weather. During the SAW grant project, Monitor Township inspected all 11 pump stations. Ten of the pump stations were constructed in the 1970s, and Pump Station 36 was built in 2004 to service the new Midland Road subdivision. The pump station capacities range from 24 to 635 gallons per minute, proportional to their service areas (see Table 1 and Figure 1). Pump Station 17 receives the highest flows, particularly during wet weather conditions, partially because its service area contains the oldest sanitary sewer lines and therefore the most infiltration and inflow due to pipe defects.
Monitor Township Wastewater Collection System Pump Stations
Identifier Location Capacity
16 57 Salzburg Road 200
17 Fairway Drive & Euclid Avenue 635
18 Oakhurst Court 160
19 2215 East Salzburg Road 180
20 Beech Street, in Kawkawlin 265
21 3219 East Huron Road 560
22 Alpine Boulevard & 2 Mile Road 210
23 Berthiaume Drive 24
27 5131 Baxman Road 320
31 Bay Arenac Drive 200
36 Spitler Drive & Whiteherse Drive 200
Table 1: Pump station identifiers, locations, and capacities. The mechanical and electrical components of the ten pump stations built in the 1970s have reached the end of their useful life. Due to the equipment’s age, some repair components are obsolete and becoming exponentially more difficult to find. Repairs to components are expensive and/or require custom fabrication. Although Pump Station 36 is newer, it receives more rags and clogging debris than it was designed to handle, which results in frequent emergency maintenance visits; it needs updated mechanical equipment to handle the rags. Pump Station 27 also needs a new roof on the building that houses the control panel and valve vault.
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PROPOSED PROJECT A. Alternatives Considered
No-Action Alternative Taking no action is not a feasible alternative for the Monitor Township collection system. The structural deficiencies of the aging sewer pipes and manholes will only compound over time, causing integrity problems, decreasing wastewater service reliability for customers, and increasing the risk of system collapses. The manholes that are currently inaccessible make routine maintenance impossible for much of the sanitary sewer system; if the accessibility issues are not addressed, the lack of routine maintenance will decrease system reliability and integrity. The pump stations are at the end of their useful life. Replacement parts for the 40-year-old machinery, which are already difficult to find, will become impossible, leading to potential pump station failures, system back-ups into basements, and sewage overflows. As a result, this alternative was not considered.
Regional Alternative Regionalization is not an option because Monitor Township’s sanitary sewer system is already connected to the West Bay County Regional Wastewater System. Switching to a different wastewater treatment plant would not resolve the issues that the Monitor Township system faces. As a result, this alternative was not considered. Replacement Alternative The replacement alternative would involve excavation of those assets identified as having structural deficiencies/accessibility issues and replacement of pipe sections, manholes, and pump stations with new equipment. This alternative would produce the highest level of service but is the most expensive, costing an estimated $8,000,000. Because the replacement alternative would use open-cut excavation, it would involve the greatest disturbance to the surface environment. Because of the potential benefits of this option, Monitor Township considered it further in their analysis. Rehabilitation Alternative The rehabilitation alternative would involve repairing the problem assets to a functional service level. The level of service of this alternative would be lower than that of the replacement alternative, but it is less expensive and still meets the system needs for reliability. The rehabilitation project is estimated to cost $2,450,000.
• Nine pipe sections (2,579 linear feet) would be repaired with cured-in-place-pipe and -point (CIPP) liners or other trenchless construction methods. Four pipe sections (950 linear feet) would be replaced with open-cut excavation and replacement because the pipes are vertically deformed by 10-20 percent each, making lining infeasible.
• One hundred thirty-seven manholes would be repaired in minimally intrusive ways: 59 manhole structures would be located and raised to grade; 25 manhole structures under pavement would be raised to grade and re-paved; 39 manholes would have their access bolts removed and replaced; and 14 manholes with NASSCO MACP ratings of 4 or 5 would be repaired by replacing castings, reattaching frames to chimneys, or replacing adjustment rings.
• Pump Station 16 would receive a replacement control panel, level controller, and valves.
• Pump Stations 17, 18, 19, 20, 21, and 22 would receive replacement pumps, control panels, level controllers, valves, and piping.
• Pump Station 23 would be fully replaced with a new grinder can station, including pumps, controls, valves, and wet well.
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• Pump Station 27 would receive replacement pumps, a new control panel and level controller, valves, piping, and a new building roof.
• Pump Station 31 would have the 4-foot diameter wet well top barrel section removed and replaced with a 6-foot diameter barrel section to allow for routine maintenance inside the wet well. Pump Station 31 would also receive a replacement control panel and level controller.
• Pump Station 36 would receive a replacement control panel, controls, pumps, and valves. The new pumps will be better able to handle the debris load it receives.
B. Proposed Project
After an analysis of alternatives, Monitor Township selected the rehabilitation alternative. The proposed project will repair or replace 3,529 linear feet of sanitary sewer, 137 manholes, and parts of eleven system pump stations, particularly pumps and electrical components. The selected rehabilitation choices are sufficient to meet the needs of the community; flows are not expected to increase over the next 20 years.
C. Project Cost Estimate
Description Rehabilitation Project Estimated Cost
Design Engineering, Financial, Legal, and Contingencies $646,400
Sanitary Sewer Pipe Construction $156,000
Manhole Construction $315,600
Pump Station Construction $1,332,000
TOTAL $2,450,000
EXISTING ENVIRONMENT AND POTENTIAL PROJECT IMPACTS A. Water Quality Impacts
The Kawkawlin River runs southwest to northeast through a majority of Monitor Township, and the Saginaw River is to the immediate east of Monitor Township. Pump Stations 20, 21, and 22 are near the 100-year floodplain for the Kawkawlin River, and Pump Stations 17 and 27 are near wetland areas. However, none of the work will occur in the state-regulated water resource areas, and no materials will be discharged into any waterways. If any materials are collected during construction, they will be disposed of at the Bay County Regional WWTP. If bypass pumping is necessary during construction, all stations are equipped with temporary bypass pumping capability. As a result, the work has no anticipated impacts to state-regulated water resources of floodplains, inland lakes and streams, or wetlands.
B. Construction Impacts A Section 7 review through the U.S. Fish and Wildlife Service website provided a no-impact determination for the project. The website identified six species that might potentially be affected by the project work: Indiana bat (Myotis sodalis), Northern long-eared bat (Myotis septentrionalis), piping plover (Charadrius melodus), red knot (Calidris canutus rufa), Eastern massasauga rattlesnake (Micrurus catenatus), and Eastern prairie fringed orchid (Platanthera leucophaea). The Indiana bat and Northern long-eared bat roost in trees from April 1 to September 30 each year. Because the project will take place only on existing infrastructure and is not expected to involve removal of any mature trees, the project is not
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likely to result in incidental take of any federally-listed species. There are no critical habitats for these federally-listed species in the project area. A review by Michigan State University’s Michigan Natural Features Inventory (MNFI) determined that suitable habitat for the federally endangered Indiana bat (Myotis sodalis) exists within a 1.5-mile radius of the project area. No other at-risk species have been documented in the project area; therefore, it is not likely that the project will have negative impacts on any protected species. The State Historic Preservation Office has determined no historic properties will be impacted (File No. ER20-936). Monitor Township contacted the federally identified tribes for Bay County, requesting comments on any potential impacts to tribal historic, religious, or cultural resources. Only the Saginaw Chippewa Indian Tribe of Michigan responded, concluding that no recorded resources were in the project area; however, if the project area or scope of work changes significantly, Monitor Township will contact their Tribal Historic Preservation Officer immediately. There are no historical ground contamination sites in the project area. No work will be impacted by ground contamination. The Tobico Marsh Nature Area, a National Natural Landmark, is approximately one mile from the nearest proposed project work. The only work that will utilize excavation lasting longer than one day will be the replacement of Pump Station 23. All proper soil erosion and sedimentation control measures will be required at the site. All excavation will cover less than 500 square feet. Because of the distance and the limited excavation involved in the proposed work, there are no anticipated impacts to the National Natural Landmark. Short-term construction impacts are expected to be minimal. Typical construction disturbances including noise, dust, and traffic changes will occur. Most of the pipe work will be done through trenchless lining technology. All construction activities will take place within existing facilities. Service will be maintained for residents and businesses during construction. The contractor will control noise, dust, traffic, and surface restoration according to local ordinances and contract specifications. Soil erosion and sedimentation control measures will be required to ensure the Kawkawlin River and Saginaw River are not impacted.
C. Socioeconomic Impacts
The East Michigan Council of Governments (EMCOG) issued a letter of support for the project on December 8, 2020, stating that the project is consistent with the EMCOG infrastructure and community resiliency goals.
D. Secondary Impacts
No significant secondary impacts are anticipated for this project. The project is designed to address deficiencies in the wastewater collection system and accommodate for the expected 20-year needs. The project will not expand the wastewater system service area, nor will it significantly increase capacity. Improvements to the system area associated with the need to address deficiencies and increase reliability of the treatment processes.
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PUBLIC PARTICIPATION Monitor Township held a public hearing on the project plan on June 22, 2020 at Monitor Charter Township Hall, 2483 East Midland Road, Bay City, Michigan 48706. The public hearing was advertised in The Valley Farmer newspaper on May 14, 2020, and copies of the project plan were made available for public review at Monitor Charter Township Hall at the same time. At the public hearing, residents had questions about the cost per user, potential alternate sources of funding, and financing decisions in the era of COVID-19. Monitor Township addressed the questions and comments and signed a Resolution adopting the project plan immediately after the hearing. REASONS FOR CONCLUDING NO SIGNIFICANT IMPACTS The Monitor Township wastewater collection system project will have no significant adverse direct, indirect, or cumulative impacts on socioeconomic, cultural, or environmental factors. Minor construction impacts will be temporary and localized to construction zones. These impacts can be mitigated with sound construction practices and adherence to permit requirements (for soil erosion, sedimentation control, etc.). All applicable cross-cutter agency review clearances have been obtained.
Questions regarding this Environmental Assessment should be directed to:
Ms. Kathy Roeder, Project Manager Water Infrastructure Financing Section
Finance Division Michigan Department of Environment, Great Lakes, and Energy
P.O. Box 30457 Lansing, Michigan 48909-4957
Telephone: 517-897-2579 E-Mail: [email protected]
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SAGINAW OFFICE230 S Washington AveSaginaw, MI 48607 Tel. 989-754-4747 www.SpicerGroup.com
DATE:
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Colored zones: Pump Station service areas
Charter Township of Monitor CWSRF Project #5718-01 Environmental AssessmentFigure 1: Pump Station locations, Pump Station service areas, and the locations of manholes and pipes to be rehabilitated by the project.