The subject of the order is to carry out maintenance work of inland flowing waters and water equipment at the site of the Water Surveillance operation in Sokolów Podlaski and Węgrów. The Contracting Authority divided the order into 8 parts, where each part is a separate item of the order. A detailed description of the object of the contract and the scope of the work related to the implementation of the various parts of the contract are presented in the objects of works (Annexes Nos 5.1 to 5.8) and in the technical specifications for the performance of maintenance works (Annex No 6), which are annexes to the SWZ.

The object of the order is to carry out maintenance works of the Buczynka river in km 0+000—37+800.

The scope of the contract includes:

— mechanical mowing of lichens from slopes and roadsides,

— manual mowing of dense hard lichens from slopes and roadsides,

— grinding of mowed lichens from escarpments, slope width up to 2 m,

— mechanical mowing of dense hard lichens from the bottom of the river (mowing spoon),

- manual removal of dense hard lichen from the bottom,

- raking down mown lichen from the bottom,

— manual demolition of the dam made by beavers with the laying of material outside the riverbed at the upper edge of the escarpment,

— manual transfer of material extracted from the dam in one level for a distance of up to 10 m,

— removal of scraps and trees felled by beavers from escarpments and riverbed, cut into pieces and set aside outside the escarpment using a combustion saw on a preserved section.

Detailed scope of the order is given in SWZ.

The object of the order is to perform maintenance works of the river Cetynia in km 0+700—8+500, 11+100—13+500,13+500—32+487, 32+487—36+300.

The scope of the contract includes:

— mechanical mowing of lichens from slopes and roadsides,

— manual mowing of dense hard lichens from slopes and roadsides,

— grinding of mowed lichens from escarpments, slope width up to 2 m,

— mechanical mowing of dense hard lichens from the bottom of the river (mowing spoon),

— manual mowing of dense hard lichens from the bottom of the river,

- raking down mown lichen from the bottom,

— manual shear of medium-density bushes and plating from the slopes of the river pointwise on preserved sections,

— mechanical shredding, branches, shrubs, shoots up to fi 22,5 cm,

— removal of scraps and trees felled by beavers from slopes and riverbed, cut into pieces and set aside outside the escarpment using a combustion saw,

— manual demolition of the dam made by beavers with the laying of material outside the riverbed at the upper edge of the escarpment — two-fold demolition,

— manual transfer of material extracted from the dam in one level over a distance of 10 m.

Detailed scope of the order is given in SWZ.

The object of the order is to carry out maintenance works of the river Ciek C in km 0+000—3+000.

The scope of the contract includes:

— mechanical mowing of lichens from slopes and side of the course,

— manual mowing of dense hard lichens from slopes and side of the course,

— grinding of mowed lichens from escarpments, slope width up to 2 m,

— mechanical mowing of dense hard lichens from the bottom of the course (mowing spoon),

- manual removal of dense hard lichen from the bottom,

- raking down mown lichen from the bottom,

— removal of scraps and trees felled by beavers from slopes and riverbed, cut into pieces and set aside outside the escarpment using a combustion saw,

— manual demolition of the dam made by beavers with the laying of material outside the riverbed at the upper edge of the escarpment, two-fold demolition,

— manual transfer of material extracted from the dam in one level over a distance of 10 m.

Detailed scope of the order is given in SWZ.

The subject of the order is the execution of maintenance works of the river and Ada in km 2+010—4+090 and the river Czerwonka in km 1+250—3+177, 16+913—19+510 and 19+630—22+897.

The scope of the contract includes:

- mechanical removal of lichen from slopes and shoulders,

- manual mowing of thick hard lichen from slopes and shoulders along with raking,

- mechanical removal of dense hard lichen from the bottom,

— removal (hacking) of root plants and removal of sheepskin floating plants and lichens of plants that root on the surface,

— manual shear of the average density of bushes and hindwings,

— mechanical shredding of branches,

— manual demolition of the dam made by beavers with the laying of material outside the riverbed at the upper edge of the escarpment,

- cleaning and accompanying works along the watercourse.

Detailed scope of the order is given in SWZ.

The subject of the order is to perform maintenance works of the river Lubiesza in km 0+000—11+273, 11+840—17+200 and 20+292—24+540.

The scope of the contract includes:

- mechanical removal of lichen from slopes and shoulders,

- manual mowing of thick hard lichen from slopes and shoulders along with raking,

- manual removal of dense hard lichen from the bottom with raking,

— manual shear of the average density of bushes and hindwings,

— mechanical shredding of branches,

— manual demolition of the dam made by beavers with the laying of material outside the riverbed at the upper edge of the escarpment,

- cleaning and accompanying works along the watercourse.

Detailed scope of the order is given in SWZ.

The subject of the order is to carry out maintenance works of the Miedzanka River in km 0+360—10+400, 10+950—20+737 and 21+779+24+257.

The scope of the contract includes:

- mechanical removal of lichen from slopes and shoulders,

- manual mowing of thick hard lichen from slopes and shoulders along with raking,

— removal (hacking) of root plants and removal of sheepskin floating plants and lichens of plants that root on the surface,

— manual shear of the average density of bushes and hindwings,

— mechanical shredding of branches,

— manual demolition of the dam made by beavers with the laying of material outside the riverbed at the upper edge of the escarpment,

- cleaning and accompanying works along the watercourse.

Detailed scope of the order is given in SWZ.

The subject of the order is the execution of maintenance works of the River Czerwonka II in km 3+819—4+292, 5+353—10+410 and 10+455—10+830 and the Struga River in km 3+375—4+130 and 9+330—10+470.

The scope of the contract includes:

- mechanical removal of lichen from slopes and shoulders,

- manual mowing of thick hard lichen from slopes and shoulders along with raking,

- mechanical removal of dense hard lichen from the bottom,

— manual shear of the average density of bushes and hindwings,

— mechanical shredding of branches,

— manual demolition of the dam made by beavers with the laying of material outside the riverbed at the upper edge of the escarpment,

- cleaning and accompanying works along the watercourse.

Detailed scope of the order is given in SWZ.

The subject of the order is the execution of maintenance works of the River Czerwonka II in km 3+819—4+292, 5+353—10+410 and 10+455—10+830 and the Struga River in km 3+375—4+130 and 9+330—10+470.

The scope of the contract includes:

- mechanical removal of lichen from slopes and shoulders,

- manual mowing of thick hard lichen from slopes and shoulders along with raking,

- mechanical removal of dense hard lichen from the bottom,

— manual shear of the average density of bushes and hindwings,

— mechanical shredding of branches,

— manual demolition of the dam made by beavers with the laying of material outside the riverbed at the upper edge of the escarpment,

- cleaning and accompanying works along the watercourse.

Detailed scope of the order is given in SWZ.