Exhibit 2 Lagoon checklist.pdf

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Attached to
Wastewater Lagoon & Lift Station Inspections-St Clair County
Solicitation number
RFP - 591 - 230000000008
Issued by
St. Clair County, Michigan

About this file

This document is an Exhibit 2 Lagoon Checklist associated with a state and local contract opportunity for Wastewater Lagoon & Lift Station Inspections in St. Clair County, Michigan. The contract is for conducting lagoon and lift station inspections, pre-discharge samplings, and effluent discharge at two Rest Areas located in St. Clair County. The contract term will be 17 months with five 1-year renewal options.

The checklist outlines the requirements for maintaining the wastewater stabilization lagoons, including controlling aquatic vegetation, maintaining minimum water depth and freeboard, ensuring proper functioning of control structures and alarms, and conducting weekly dissolved oxygen testing. Inspections are required three times per week year-round, and discrepancies must be documented and corrected. The contract opportunity does not provide details on pricing terms, set-asides, incumbents, funding requirements, or other salient commercial information.

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Year:

#2: Not more than 10% of the water surface shall be covered by floating vegetation and not more than 10% of the water perimeter may have emergent rooted aquatic plants. The occurrence of scum, floating sludge, offensive odors, insect infestations, and septic conditions shall be minimized. Enter the percentage of water surface covered by floating vegetation and emergent rooted aquatic plants in each cell in the box provided. Explain in the comment area if there are deficiencies and enter the date when corrections are made.

#3: Depth shall be maintained at a minimum of two feet of water in all cells at all times. Record the depth of wastewater in each cell in the box provided. Indicate in the comment area why there is less than the required two feet of water in the cell and enter the date when conditions are back in compliance.

#4: Freeboard shall be maintained at a minimum of two feet in all cells at all times. Record the amount of freeboard in each cell. Indicate in the comment area why there is less than the required two feet of freeboard and enter the date when conditions are back in compliance.

#5: Place a check in the box if control structures and pump stations, valves, gates, and alarms are set and properly functioning. Enter a “X” in the box and explain in the comment area what structures and alarms are not set and properly functioning. Enter the date in the comment area when corrections are made.

#6: Place a check in the box if the lagoon fence is in good shape and functioning and warning signs are in place and clearly displayed and readable. Brush and weeds should be kept below 6" along the fence. Enter a “X” in the box and explain in the comment area the discrepancies if fences need repairs and/or warning signs need replacing or repair. Enter the date in the comment area when corrections are made.

Enter the weather conditions during the inspection, c=cloudy, s=sunny, p=precipitation. (Optional) Enter influent flow in million gallons per day (MG/D). (Optional).

#7: Analysis for dissolved oxygen in each cell must be conducted at least once weekly, except when the lagoons are ice covered. Enter the dissolved oxygen for each cell at least once weekly in the box, unless ice covered. Enter “ice” in the box and/or in the comment area when applicable.

Enter the inspector’s initials in the box provided.

Instructions

Lagoon inspections shall be conducted three times weekly year-round unless otherwise directed by the Department. Enter the date the inspection was completed.

#1: Vegetation shall be maintained at a height not more than 6 inches above the ground on lagoon dikes. Dike damage caused by erosion, slumping or animal burrowing shall be corrected immediately and steps taken to prevent occurrences in the future. The integrity of the lagoon liner shall be protected. Liner damages shall be corrected immediately and steps taken to prevent future occurrences. Place a check in the box if vegetation, erosion, slumping, animal burrowing or breakthrough, and liner condition is satisfactory. If conditions are unsatisfactory, enter a “X” in the box and identify the cell and explain the discrepancies in the comment area. Enter the date in the comment area when corrections are made.

Weather conditions (optional)

Influent flow MG/D (optional)

#5 Control structures and pump stations which include valves, gates, and alarms are set correctly and properly functioning

#6 Security fence and warning signs

Required by Part I.A.2.- Facility Operation and Maintenance , of the permit

# 7 Dissolved

Oxygen (mg/l)

Key: Ice = ice covered

Inspector's initials

#4 Freeboard in each cell

#3 Depth of water in each cell

#1 Dikes: vegetative growth

Erosion/slumping

Animal burrowing or breakthrough of liner

Liner condition

#2 Cells: % of water surface covered by aquatic plants

Week 4 Inspection DatesWeek 2 Inspection Dates Week 3 Inspection Dates Comments/Corrections

Week 5 Inspection Dates

Wastewater Stabilization Lagoon Facility Operation and Maintenance Inspection Checklist

Facility:

Key for Item # 1, 5, and 6 : = satisfactory conditions found during the inspection X = unsatisfactory conditions found during the inspection

Permit # Month:

Lagoon Inspection required three times weekly year-round

Week 1 Inspection Dates

LAGOONS

File details come from the government source that posted it. Updated .