Tenders Are Invited For Biormediacation Of The Water Reservoir At The Recreation And Recreation Center In Mikorzyna - Stage Ii

1. The Subject Of The Contract Is Bioremediacation Of The Water Reservoir At The Recreation And Recreation Center In Mikorzyna - Stage Ii. 2. The Task Includes Conducting A Cycle Of Microbiological Bioremediacation In Situ In One Of The Tanks (Medium Pond) With An Area Of ​​1.684 Ha Of Water In Order To Improve Its Natural Values ​​And Recreational Function. 1) The Contractor Is Obliged To Present The Contracting Authority Of The Work Schedule Within 7 Days From The Date Of Signing The Contract. Water Samples And The Thickness Of The Bottom Sediment. The Map With Marked Measuring Points Must Be Delivered To The Employer Up To 2 Weeks After Signing The Contract. 3) The Contracting Authority, Before The Contractor Starts, Requires Measurements Of The Amount Of Silt And The Collection Of Water Samples For Testing (General Nitrogen, General Phosphorus, Oxygen Dissolved At The Surface And In The Bottom Zone, Ph). Zero Tests And Water Samples Should Be Performed By Commission Before Starting Work. The Measurements In Question Are To Be Used As Output Data For Subsequent Tests. The Tests Are To Be Carried Out By An Independent Laboratory At The Contractors Expense Up To 2 Weeks After Signing The Contract. 4) At Least Double Applications Of The Microbiological Preparation - The Last Application Until November 14, 2025. 5) The Ordering Party Requires Control Measurements Of The Amount Of Silt And Tests Of Water Status Monitoring (General Nitrogen, General Phosphorus, Oxygen Dissolved At The Surface And In The Bottom Zone, Ph). Control Research And Water Sampling Should Be Carried Out By Commission By November 28, 2025. The Tests Are To Be Performed By An Independent Laboratory.6) To Confirm The Ecological Effect, The Contracting Authority Requires Measurements Of Final Amount Of Silt And Research On Water Status Monitoring (General Nitrogen, General Phosphorus, Oxygen Dissolved At The Surface And In The Bottom Zone, Ph) After 12 Months From The Last Application Of The Preparation. Re -Examination Of Water Verifying The Effects Of Work Should Be Performed Under Similar Weather Conditions (In The Same Summer When The Season, The Water And Air Temperature Are The Same Or Similar). The Tests Are To Be Performed By An Independent Laboratory At The Contractors Expense By November 14, 2026.7) Expected Biological Effects: A) Reduction Of Organic Bottom Sediments By At Least 30% Within 12 Months Of Starting Work Without The Use Of Mechanical Devices And Chemicals; B) Liquidation Of Crusts From The Tank Within 3 To 5 Days From The Completion Of Application Work; C) In The Bottom Zone On Average With A Minimum Of 1 Mg/L. Iii. Place Of Performance Of The Subject Of The Contract. The Operation Will Be Carried Out At The Recreation Center In Mikorzyna, On Record Plots Marked With Geodetic Numbers No. 973/93 And 35/7, Located In The Protected Landscape Area Wzgórza Ostrzeszów And Odolan Kotliny. Waters From A Natural Watercourse - Zaleski Ditch, Including A Small Pond W

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