As part of the implementation of the Directive of the European Parliament and of the Council on the assessment and management of flood risks, the EC Flood Risk Management Directive (EC-HWRM-RL), the flood hazard maps in Rhineland-Palatinate must be reviewed in the third cycle of the Directive. The flood hazard maps form an essential part of the flood risk management plans to be drawn up in accordance with the EC-HWRM-RL. In addition, they are used to establish 100-year flood plains in accordance with Section 78 of the Water Resources Act. In order to update the flood hazard maps, the state of Rhineland-Palatinate has decided to use a new 2D hydrodynamic model system (VISDOM).

The basis of the new 2D hydrodynamic model system is formed by survey data of the water body, in particular cross-section data. In the course of updating the flood hazard maps and in view of the age of the survey base, the following water bodies are to be re-surveyed:

- Rhineland-Palatinate section of the Sieg

- Nesting

- Ahr

- Adenauerbach

- Sahrbach

- Lieser

-Salmon

- Yes

- Prüm

-Etc

- Nims

- Isenach

These new surveys are intended to form the basis for the analysis of flood hazards by means of 2D hydronumerical calculations on these very waters.

Transfer and plausibility check of the existing data (price item 1):

The contractor takes over the existing data. In detail, the following data will be made available for processing:

- Overview of the sections of water to be worked on (shape file)

- Official water mileage (shape file)

- Survey planning for each body of water (shape files)

- Topographic maps, orthophotos (digital)

- Quantities per water body (table, already made available with invitation to tender)

The Contractor shall receive the above-mentioned data from the Client at the beginning of an execution period. The contractor takes over and checks the survey planning for any ambiguities (cf. price item 1.1 of the quantity fronts and price sheet form 302). After the transfer of the data or the procurement of the freely available data (link to the download page will be provided), a start meeting will take place (cf. items 1.2 and 1.3. of the quantity specifications and price sheet form 302). The initial meeting will take place as a video conference. The provision of the video conference room is carried out by the client. The duration of the initial interview is estimated at two hours. The purpose of the initial meeting is to exchange information between the contractor and the client and to clarify possible ambiguities before the start of the surveying work. The contractor prepares a summary of the meeting.

Surveying work (price items to 2):

In addition to water and structure profiles, the contractor must measure the upper edges of embankments, bank walls and longitudinal structures along the water (esp. flood protection systems) as well as flow-directing longitudinal structures on the foreland, insofar as they are not included with sufficient accuracy in the digital terrain model. Furthermore, bridges and culverts on the lower reaches of the tributaries flowing into them as well as in longitudinal structures along the waters or on the foreland must be included, insofar as they have an influence on the extent of the flood plains. Finally, the water levels at the respective water bodies must also be measured (cf. quantity fronts and price sheet items 2 form 302).

The detailed surveying work to be carried out is specified in the survey plan already made available with the invitation to tender (quantities for each body of water). Appendices LB01a-LB01j define the quantity fronts of the survey planning for each lot. At the start of processing, the position of the cross-sections, longitudinal profiles, individual points, etc. specified in the preliminary planning is transferred on the basis of shape files. The shape files represent the surveying requirements shown in the quantity fronts for each body of water.

In order to supplement the profiles to be measured on structures as well as to record punctual information (zero points of gauge slats on the watercourse, flood marks, lateral junctions, etc.), individual points on the water body must be recorded. The surveyor decides on the recording of individual points on site. More detailed information can be found in Appendix LB02, Section 9.

If, during the execution of the work, the surveyor identifies additional structures or special features in the water body that are not included in the surveying requirement, these should also be recorded on site.

Up to a quantity increase of 10 % of the quantity front rates specified by the customer per lot per price item for 2, the customer must be informed of the measurement of the additional quantities promptly afterwards by e-mail. The increase in quantity is reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (Form 302). In the case of the increase in quantity described above, no approval is required on the part of the customer.

From a quantity increase of more than 10 % of the quantity front rates specified by the client per lot per price item 2, the contractor must coordinate the additional surveying requirements or the special features with the client by e-mail before they are measured. In urgent cases, it is also possible to vote by telephone. Prior to the execution of this additional surveying work, the written consent of the client is required. In the event of approval, the increase in quantity will be reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (form 302).

The Contractor shall inform the Client in advance by e-mail of the start of the surveying work (field service), its expected duration and its end.

The requirements for surveying can be found in Appendix LB02 "Specifications for Terrestrial Surveying". They must be observed and adhered to by the contractor during the preparation, execution and follow-up of the work.

The results of the survey must be checked for plausibility and submitted to the client for review and approval.

The e-mail address and telephone number for voting will be communicated to the Contractor after the contract has been awarded.

Documentation of the work and data transfer (price position 3):

Following the surveying work, the raw survey data must be checked and processed (cf. price item 3.1 of the quantity fronts and price sheet form 302) so that the survey data can be transferred as described in Appendix LB02, Section 12. The surveying work must be documented in a report, from which all work in the office (evaluation and preparation of the survey data) and field service (recording of the survey data in the field) as well as all special features on the water body can be traced (see Appendix LB02 Section 11, cf. price item 3.2 of the quantity front rates and price sheet form 302). These include the following points:

- Fundamentals Used

-Methodology

- Data preparation and data transfer

- quality assurance

Transfer and plausibility check of the existing data (price item 1):

The contractor takes over the existing data. In detail, the following data will be made available for processing:

- Overview of the sections of water to be worked on (shape file)

- Official water mileage (shape file)

- Survey planning for each body of water (shape files)

- Topographic maps, orthophotos (digital)

- Quantities per water body (table, already made available with invitation to tender)

The Contractor shall receive the above-mentioned data from the Client at the beginning of an execution period. The contractor takes over and checks the survey planning for any ambiguities (cf. price item 1.1 of the quantity fronts and price sheet form 302). After the transfer of the data or the procurement of the freely available data (link to the download page will be provided), a start meeting will take place (cf. items 1.2 and 1.3. of the quantity specifications and price sheet form 302). The initial meeting will take place as a video conference. The provision of the video conference room is carried out by the client. The duration of the initial interview is estimated at two hours. The purpose of the initial meeting is to exchange information between the contractor and the client and to clarify possible ambiguities before the start of the surveying work. The contractor prepares a summary of the meeting.

Surveying work (price items to 2):

In addition to water and structure profiles, the contractor must measure the upper edges of embankments, bank walls and longitudinal structures along the water (esp. flood protection systems) as well as flow-directing longitudinal structures on the foreland, insofar as they are not included with sufficient accuracy in the digital terrain model. Furthermore, bridges and culverts on the lower reaches of the tributaries flowing into them as well as in longitudinal structures along the waters or on the foreland must be included, insofar as they have an influence on the extent of the flood plains. Finally, the water levels at the respective water bodies must also be measured (cf. quantity fronts and price sheet items 2 form 302).

The detailed surveying work to be carried out is specified in the survey plan already made available with the invitation to tender (quantities for each body of water). Appendices LB01a-LB01j define the quantity fronts of the survey planning for each lot. At the start of processing, the position of the cross-sections, longitudinal profiles, individual points, etc. specified in the preliminary planning is transferred on the basis of shape files. The shape files represent the surveying requirements shown in the quantity fronts for each body of water.

In order to supplement the profiles to be measured on structures as well as to record punctual information (zero points of gauge slats on the watercourse, flood marks, lateral junctions, etc.), individual points on the water body must be recorded. The surveyor decides on the recording of individual points on site. More detailed information can be found in Appendix LB02, Section 9.

If, during the execution of the work, the surveyor identifies additional structures or special features in the water body that are not included in the surveying requirement, these should also be recorded on site.

Up to a quantity increase of 10 % of the quantity front rates specified by the customer per lot per price item for 2, the customer must be informed of the measurement of the additional quantities promptly afterwards by e-mail. The increase in quantity is reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (Form 302). In the case of the increase in quantity described above, no approval is required on the part of the customer.

From a quantity increase of more than 10 % of the quantity front rates specified by the client per lot per price item 2, the contractor must coordinate the additional surveying requirements or the special features with the client by e-mail before they are measured. In urgent cases, it is also possible to vote by telephone. Prior to the execution of this additional surveying work, the written consent of the client is required. In the event of approval, the increase in quantity will be reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (form 302).

The Contractor shall inform the Client in advance by e-mail of the start of the surveying work (field service), its expected duration and its end.

The requirements for surveying can be found in Appendix LB02 "Specifications for Terrestrial Surveying". They must be observed and adhered to by the contractor during the preparation, execution and follow-up of the work.

The results of the survey must be checked for plausibility and submitted to the client for review and approval.

The e-mail address and telephone number for voting will be communicated to the Contractor after the contract has been awarded.

Documentation of the work and data transfer (price position 3):

Following the surveying work, the raw survey data must be checked and processed (cf. price item 3.1 of the quantity fronts and price sheet form 302) so that the survey data can be transferred as described in Appendix LB02, Section 12. The surveying work must be documented in a report, from which all work in the office (evaluation and preparation of the survey data) and field service (recording of the survey data in the field) as well as all special features on the water body can be traced (see Appendix LB02 Section 11, cf. price item 3.2 of the quantity front rates and price sheet form 302). These include the following points:

- Fundamentals Used

-Methodology

- Data preparation and data transfer

- quality assurance

Transfer and plausibility check of the existing data (price item 1):

The contractor takes over the existing data. In detail, the following data will be made available for processing:

- Overview of the sections of water to be worked on (shape file)

- Official water mileage (shape file)

- Survey planning for each body of water (shape files)

- Topographic maps, orthophotos (digital)

- Quantities per water body (table, already made available with invitation to tender)

The Contractor shall receive the above-mentioned data from the Client at the beginning of an execution period. The contractor takes over and checks the survey planning for any ambiguities (cf. price item 1.1 of the quantity fronts and price sheet form 302). After the transfer of the data or the procurement of the freely available data (link to the download page will be provided), a start meeting will take place (cf. items 1.2 and 1.3. of the quantity specifications and price sheet form 302). The initial meeting will take place as a video conference. The provision of the video conference room is carried out by the client. The duration of the initial interview is estimated at two hours. The purpose of the initial meeting is to exchange information between the contractor and the client and to clarify possible ambiguities before the start of the surveying work. The contractor prepares a summary of the meeting.

Surveying work (price items to 2):

In addition to water and structure profiles, the contractor must measure the upper edges of embankments, bank walls and longitudinal structures along the water (esp. flood protection systems) as well as flow-directing longitudinal structures on the foreland, insofar as they are not included with sufficient accuracy in the digital terrain model. Furthermore, bridges and culverts on the lower reaches of the tributaries flowing into them as well as in longitudinal structures along the waters or on the foreland must be included, insofar as they have an influence on the extent of the flood plains. Finally, the water levels at the respective water bodies must also be measured (cf. quantity fronts and price sheet items 2 form 302).

The detailed surveying work to be carried out is specified in the survey plan already made available with the invitation to tender (quantities for each body of water). Appendices LB01a-LB01j define the quantity fronts of the survey planning for each lot. At the start of processing, the position of the cross-sections, longitudinal profiles, individual points, etc. specified in the preliminary planning is transferred on the basis of shape files. The shape files represent the surveying requirements shown in the quantity fronts for each body of water.

In order to supplement the profiles to be measured on structures as well as to record punctual information (zero points of gauge slats on the watercourse, flood marks, lateral junctions, etc.), individual points on the water body must be recorded. The surveyor decides on the recording of individual points on site. More detailed information can be found in Appendix LB02, Section 9.

If, during the execution of the work, the surveyor identifies additional structures or special features in the water body that are not included in the surveying requirement, these should also be recorded on site.

Up to a quantity increase of 10 % of the quantity front rates specified by the customer per lot per price item for 2, the customer must be informed of the measurement of the additional quantities promptly afterwards by e-mail. The increase in quantity is reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (Form 302). In the case of the increase in quantity described above, no approval is required on the part of the customer.

From a quantity increase of more than 10 % of the quantity front rates specified by the client per lot per price item 2, the contractor must coordinate the additional surveying requirements or the special features with the client by e-mail before they are measured. In urgent cases, it is also possible to vote by telephone. Prior to the execution of this additional surveying work, the written consent of the client is required. In the event of approval, the increase in quantity will be reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (form 302).

The Contractor shall inform the Client in advance by e-mail of the start of the surveying work (field service), its expected duration and its end.

The requirements for surveying can be found in Appendix LB02 "Specifications for Terrestrial Surveying". They must be observed and adhered to by the contractor during the preparation, execution and follow-up of the work.

The results of the survey must be checked for plausibility and submitted to the client for review and approval.

The e-mail address and telephone number for voting will be communicated to the Contractor after the contract has been awarded.

Documentation of the work and data transfer (price position 3):

Following the surveying work, the raw survey data must be checked and processed (cf. price item 3.1 of the quantity fronts and price sheet form 302) so that the survey data can be transferred as described in Appendix LB02, Section 12. The surveying work must be documented in a report, from which all work in the office (evaluation and preparation of the survey data) and field service (recording of the survey data in the field) as well as all special features on the water body can be traced (see Appendix LB02 Section 11, cf. price item 3.2 of the quantity front rates and price sheet form 302). These include the following points:

- Fundamentals Used

-Methodology

- Data preparation and data transfer

- quality assurance

Transfer and plausibility check of the existing data (price item 1):

The contractor takes over the existing data. In detail, the following data will be made available for processing:

- Overview of the sections of water to be worked on (shape file)

- Official water mileage (shape file)

- Survey planning for each body of water (shape files)

- Topographic maps, orthophotos (digital)

- Quantities per water body (table, already made available with invitation to tender)

The Contractor shall receive the above-mentioned data from the Client at the beginning of an execution period. The contractor takes over and checks the survey planning for any ambiguities (cf. price item 1.1 of the quantity fronts and price sheet form 302). After the transfer of the data or the procurement of the freely available data (link to the download page will be provided), a start meeting will take place (cf. items 1.2 and 1.3. of the quantity specifications and price sheet form 302). The initial meeting will take place as a video conference. The provision of the video conference room is carried out by the client. The duration of the initial interview is estimated at two hours. The purpose of the initial meeting is to exchange information between the contractor and the client and to clarify possible ambiguities before the start of the surveying work. The contractor prepares a summary of the meeting.

Surveying work (price items to 2):

In addition to water and structure profiles, the contractor must measure the upper edges of embankments, bank walls and longitudinal structures along the water (esp. flood protection systems) as well as flow-directing longitudinal structures on the foreland, insofar as they are not included with sufficient accuracy in the digital terrain model. Furthermore, bridges and culverts on the lower reaches of the tributaries flowing into them as well as in longitudinal structures along the waters or on the foreland must be included, insofar as they have an influence on the extent of the flood plains. Finally, the water levels at the respective water bodies must also be measured (cf. quantity fronts and price sheet items 2 form 302).

The detailed surveying work to be carried out is specified in the survey plan already made available with the invitation to tender (quantities for each body of water). Appendices LB01a-LB01j define the quantity fronts of the survey planning for each lot. At the start of processing, the position of the cross-sections, longitudinal profiles, individual points, etc. specified in the preliminary planning is transferred on the basis of shape files. The shape files represent the surveying requirements shown in the quantity fronts for each body of water.

In order to supplement the profiles to be measured on structures as well as to record punctual information (zero points of gauge slats on the watercourse, flood marks, lateral junctions, etc.), individual points on the water body must be recorded. The surveyor decides on the recording of individual points on site. More detailed information can be found in Appendix LB02, Section 9.

If, during the execution of the work, the surveyor identifies additional structures or special features in the water body that are not included in the surveying requirement, these should also be recorded on site.

Up to a quantity increase of 10 % of the quantity front rates specified by the customer per lot per price item for 2, the customer must be informed of the measurement of the additional quantities promptly afterwards by e-mail. The increase in quantity is reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (Form 302). In the case of the increase in quantity described above, no approval is required on the part of the customer.

From a quantity increase of more than 10 % of the quantity front rates specified by the client per lot per price item 2, the contractor must coordinate the additional surveying requirements or the special features with the client by e-mail before they are measured. In urgent cases, it is also possible to vote by telephone. Prior to the execution of this additional surveying work, the written consent of the client is required. In the event of approval, the increase in quantity will be reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (form 302).

The Contractor shall inform the Client in advance by e-mail of the start of the surveying work (field service), its expected duration and its end.

The requirements for surveying can be found in Appendix LB02 "Specifications for Terrestrial Surveying". They must be observed and adhered to by the contractor during the preparation, execution and follow-up of the work.

The results of the survey must be checked for plausibility and submitted to the client for review and approval.

The e-mail address and telephone number for voting will be communicated to the Contractor after the contract has been awarded.

Documentation of the work and data transfer (price position 3):

Following the surveying work, the raw survey data must be checked and processed (cf. price item 3.1 of the quantity fronts and price sheet form 302) so that the survey data can be transferred as described in Appendix LB02, Section 12. The surveying work must be documented in a report, from which all work in the office (evaluation and preparation of the survey data) and field service (recording of the survey data in the field) as well as all special features on the water body can be traced (see Appendix LB02 Section 11, cf. price item 3.2 of the quantity front rates and price sheet form 302). These include the following points:

- Fundamentals Used

-Methodology

- Data preparation and data transfer

- quality assurance

Transfer and plausibility check of the existing data (price item 1):

The contractor takes over the existing data. In detail, the following data will be made available for processing:

- Overview of the sections of water to be worked on (shape file)

- Official water mileage (shape file)

- Survey planning for each body of water (shape files)

- Topographic maps, orthophotos (digital)

- Quantities per water body (table, already made available with invitation to tender)

The Contractor shall receive the above-mentioned data from the Client at the beginning of an execution period. The contractor takes over and checks the survey planning for any ambiguities (cf. price item 1.1 of the quantity fronts and price sheet form 302). After the transfer of the data or the procurement of the freely available data (link to the download page will be provided), a start meeting will take place (cf. items 1.2 and 1.3. of the quantity specifications and price sheet form 302). The initial meeting will take place as a video conference. The provision of the video conference room is carried out by the client. The duration of the initial interview is estimated at two hours. The purpose of the initial meeting is to exchange information between the contractor and the client and to clarify possible ambiguities before the start of the surveying work. The contractor prepares a summary of the meeting.

Surveying work (price items to 2):

In addition to water and structure profiles, the contractor must measure the upper edges of embankments, bank walls and longitudinal structures along the water (esp. flood protection systems) as well as flow-directing longitudinal structures on the foreland, insofar as they are not included with sufficient accuracy in the digital terrain model. Furthermore, bridges and culverts on the lower reaches of the tributaries flowing into them as well as in longitudinal structures along the waters or on the foreland must be included, insofar as they have an influence on the extent of the flood plains. Finally, the water levels at the respective water bodies must also be measured (cf. quantity fronts and price sheet items 2 form 302).

The detailed surveying work to be carried out is specified in the survey plan already made available with the invitation to tender (quantities for each body of water). Appendices LB01a-LB01j define the quantity fronts of the survey planning for each lot. At the start of processing, the position of the cross-sections, longitudinal profiles, individual points, etc. specified in the preliminary planning is transferred on the basis of shape files. The shape files represent the surveying requirements shown in the quantity fronts for each body of water.

In order to supplement the profiles to be measured on structures as well as to record punctual information (zero points of gauge slats on the watercourse, flood marks, lateral junctions, etc.), individual points on the water body must be recorded. The surveyor decides on the recording of individual points on site. More detailed information can be found in Appendix LB02, Section 9.

If, during the execution of the work, the surveyor identifies additional structures or special features in the water body that are not included in the surveying requirement, these should also be recorded on site.

Up to a quantity increase of 10 % of the quantity front rates specified by the customer per lot per price item for 2, the customer must be informed of the measurement of the additional quantities promptly afterwards by e-mail. The increase in quantity is reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (Form 302). In the case of the increase in quantity described above, no approval is required on the part of the customer.

From a quantity increase of more than 10 % of the quantity front rates specified by the client per lot per price item 2, the contractor must coordinate the additional surveying requirements or the special features with the client by e-mail before they are measured. In urgent cases, it is also possible to vote by telephone. Prior to the execution of this additional surveying work, the written consent of the client is required. In the event of approval, the increase in quantity will be reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (form 302).

The Contractor shall inform the Client in advance by e-mail of the start of the surveying work (field service), its expected duration and its end.

The requirements for surveying can be found in Appendix LB02 "Specifications for Terrestrial Surveying". They must be observed and adhered to by the contractor during the preparation, execution and follow-up of the work.

The results of the survey must be checked for plausibility and submitted to the client for review and approval.

The e-mail address and telephone number for voting will be communicated to the Contractor after the contract has been awarded.

Documentation of the work and data transfer (price position 3):

Following the surveying work, the raw survey data must be checked and processed (cf. price item 3.1 of the quantity fronts and price sheet form 302) so that the survey data can be transferred as described in Appendix LB02, Section 12. The surveying work must be documented in a report, from which all work in the office (evaluation and preparation of the survey data) and field service (recording of the survey data in the field) as well as all special features on the water body can be traced (see Appendix LB02 Section 11, cf. price item 3.2 of the quantity front rates and price sheet form 302). These include the following points:

- Fundamentals Used

-Methodology

- Data preparation and data transfer

- quality assurance

Transfer and plausibility check of the existing data (price item 1):

The contractor takes over the existing data. In detail, the following data will be made available for processing:

- Overview of the sections of water to be worked on (shape file)

- Official water mileage (shape file)

- Survey planning for each body of water (shape files)

- Topographic maps, orthophotos (digital)

- Quantities per water body (table, already made available with invitation to tender)

The Contractor shall receive the above-mentioned data from the Client at the beginning of an execution period. The contractor takes over and checks the survey planning for any ambiguities (cf. price item 1.1 of the quantity fronts and price sheet form 302). After the transfer of the data or the procurement of the freely available data (link to the download page will be provided), a start meeting will take place (cf. items 1.2 and 1.3. of the quantity specifications and price sheet form 302). The initial meeting will take place as a video conference. The provision of the video conference room is carried out by the client. The duration of the initial interview is estimated at two hours. The purpose of the initial meeting is to exchange information between the contractor and the client and to clarify possible ambiguities before the start of the surveying work. The contractor prepares a summary of the meeting.

Surveying work (price items to 2):

In addition to water and structure profiles, the contractor must measure the upper edges of embankments, bank walls and longitudinal structures along the water (esp. flood protection systems) as well as flow-directing longitudinal structures on the foreland, insofar as they are not included with sufficient accuracy in the digital terrain model. Furthermore, bridges and culverts on the lower reaches of the tributaries flowing into them as well as in longitudinal structures along the waters or on the foreland must be included, insofar as they have an influence on the extent of the flood plains. Finally, the water levels at the respective water bodies must also be measured (cf. quantity fronts and price sheet items 2 form 302).

The detailed surveying work to be carried out is specified in the survey plan already made available with the invitation to tender (quantities for each body of water). Appendices LB01a-LB01j define the quantity fronts of the survey planning for each lot. At the start of processing, the position of the cross-sections, longitudinal profiles, individual points, etc. specified in the preliminary planning is transferred on the basis of shape files. The shape files represent the surveying requirements shown in the quantity fronts for each body of water.

In order to supplement the profiles to be measured on structures as well as to record punctual information (zero points of gauge slats on the watercourse, flood marks, lateral junctions, etc.), individual points on the water body must be recorded. The surveyor decides on the recording of individual points on site. More detailed information can be found in Appendix LB02, Section 9.

If, during the execution of the work, the surveyor identifies additional structures or special features in the water body that are not included in the surveying requirement, these should also be recorded on site.

Up to a quantity increase of 10 % of the quantity front rates specified by the customer per lot per price item for 2, the customer must be informed of the measurement of the additional quantities promptly afterwards by e-mail. The increase in quantity is reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (Form 302). In the case of the increase in quantity described above, no approval is required on the part of the customer.

From a quantity increase of more than 10 % of the quantity front rates specified by the client per lot per price item 2, the contractor must coordinate the additional surveying requirements or the special features with the client by e-mail before they are measured. In urgent cases, it is also possible to vote by telephone. Prior to the execution of this additional surveying work, the written consent of the client is required. In the event of approval, the increase in quantity will be reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (form 302).

The Contractor shall inform the Client in advance by e-mail of the start of the surveying work (field service), its expected duration and its end.

The requirements for surveying can be found in Appendix LB02 "Specifications for Terrestrial Surveying". They must be observed and adhered to by the contractor during the preparation, execution and follow-up of the work.

The results of the survey must be checked for plausibility and submitted to the client for review and approval.

The e-mail address and telephone number for voting will be communicated to the Contractor after the contract has been awarded.

Documentation of the work and data transfer (price position 3):

Following the surveying work, the raw survey data must be checked and processed (cf. price item 3.1 of the quantity fronts and price sheet form 302) so that the survey data can be transferred as described in Appendix LB02, Section 12. The surveying work must be documented in a report, from which all work in the office (evaluation and preparation of the survey data) and field service (recording of the survey data in the field) as well as all special features on the water body can be traced (see Appendix LB02 Section 11, cf. price item 3.2 of the quantity front rates and price sheet form 302). These include the following points:

- Fundamentals Used

-Methodology

- Data preparation and data transfer

- quality assurance

Transfer and plausibility check of the existing data (price item 1):

The contractor takes over the existing data. In detail, the following data will be made available for processing:

- Overview of the sections of water to be worked on (shape file)

- Official water mileage (shape file)

- Survey planning for each body of water (shape files)

- Topographic maps, orthophotos (digital)

- Quantities per water body (table, already made available with invitation to tender)

The Contractor shall receive the above-mentioned data from the Client at the beginning of an execution period. The contractor takes over and checks the survey planning for any ambiguities (cf. price item 1.1 of the quantity fronts and price sheet form 302). After the transfer of the data or the procurement of the freely available data (link to the download page will be provided), a start meeting will take place (cf. items 1.2 and 1.3. of the quantity specifications and price sheet form 302). The initial meeting will take place as a video conference. The provision of the video conference room is carried out by the client. The duration of the initial interview is estimated at two hours. The purpose of the initial meeting is to exchange information between the contractor and the client and to clarify possible ambiguities before the start of the surveying work. The contractor prepares a summary of the meeting.

Surveying work (price items to 2):

In addition to water and structure profiles, the contractor must measure the upper edges of embankments, bank walls and longitudinal structures along the water (esp. flood protection systems) as well as flow-directing longitudinal structures on the foreland, insofar as they are not included with sufficient accuracy in the digital terrain model. Furthermore, bridges and culverts on the lower reaches of the tributaries flowing into them as well as in longitudinal structures along the waters or on the foreland must be included, insofar as they have an influence on the extent of the flood plains. Finally, the water levels at the respective water bodies must also be measured (cf. quantity fronts and price sheet items 2 form 302).

The detailed surveying work to be carried out is specified in the survey plan already made available with the invitation to tender (quantities for each body of water). Appendices LB01a-LB01j define the quantity fronts of the survey planning for each lot. At the start of processing, the position of the cross-sections, longitudinal profiles, individual points, etc. specified in the preliminary planning is transferred on the basis of shape files. The shape files represent the surveying requirements shown in the quantity fronts for each body of water.

In order to supplement the profiles to be measured on structures as well as to record punctual information (zero points of gauge slats on the watercourse, flood marks, lateral junctions, etc.), individual points on the water body must be recorded. The surveyor decides on the recording of individual points on site. More detailed information can be found in Appendix LB02, Section 9.

If, during the execution of the work, the surveyor identifies additional structures or special features in the water body that are not included in the surveying requirement, these should also be recorded on site.

Up to a quantity increase of 10 % of the quantity front rates specified by the customer per lot per price item for 2, the customer must be informed of the measurement of the additional quantities promptly afterwards by e-mail. The increase in quantity is reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (Form 302). In the case of the increase in quantity described above, no approval is required on the part of the customer.

From a quantity increase of more than 10 % of the quantity front rates specified by the client per lot per price item 2, the contractor must coordinate the additional surveying requirements or the special features with the client by e-mail before they are measured. In urgent cases, it is also possible to vote by telephone. Prior to the execution of this additional surveying work, the written consent of the client is required. In the event of approval, the increase in quantity will be reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (form 302).

The Contractor shall inform the Client in advance by e-mail of the start of the surveying work (field service), its expected duration and its end.

The requirements for surveying can be found in Appendix LB02 "Specifications for Terrestrial Surveying". They must be observed and adhered to by the contractor during the preparation, execution and follow-up of the work.

The results of the survey must be checked for plausibility and submitted to the client for review and approval.

The e-mail address and telephone number for voting will be communicated to the Contractor after the contract has been awarded.

Documentation of the work and data transfer (price position 3):

Following the surveying work, the raw survey data must be checked and processed (cf. price item 3.1 of the quantity fronts and price sheet form 302) so that the survey data can be transferred as described in Appendix LB02, Section 12. The surveying work must be documented in a report, from which all work in the office (evaluation and preparation of the survey data) and field service (recording of the survey data in the field) as well as all special features on the water body can be traced (see Appendix LB02 Section 11, cf. price item 3.2 of the quantity front rates and price sheet form 302). These include the following points:

- Fundamentals Used

-Methodology

- Data preparation and data transfer

- quality assurance

Transfer and plausibility check of the existing data (price item 1):

The contractor takes over the existing data. In detail, the following data will be made available for processing:

- Overview of the sections of water to be worked on (shape file)

- Official water mileage (shape file)

- Survey planning for each body of water (shape files)

- Topographic maps, orthophotos (digital)

- Quantities per water body (table, already made available with invitation to tender)

The Contractor shall receive the above-mentioned data from the Client at the beginning of an execution period. The contractor takes over and checks the survey planning for any ambiguities (cf. price item 1.1 of the quantity fronts and price sheet form 302). After the transfer of the data or the procurement of the freely available data (link to the download page will be provided), a start meeting will take place (cf. items 1.2 and 1.3. of the quantity specifications and price sheet form 302). The initial meeting will take place as a video conference. The provision of the video conference room is carried out by the client. The duration of the initial interview is estimated at two hours. The purpose of the initial meeting is to exchange information between the contractor and the client and to clarify possible ambiguities before the start of the surveying work. The contractor prepares a summary of the meeting.

Surveying work (price items to 2):

In addition to water and structure profiles, the contractor must measure the upper edges of embankments, bank walls and longitudinal structures along the water (esp. flood protection systems) as well as flow-directing longitudinal structures on the foreland, insofar as they are not included with sufficient accuracy in the digital terrain model. Furthermore, bridges and culverts on the lower reaches of the tributaries flowing into them as well as in longitudinal structures along the waters or on the foreland must be included, insofar as they have an influence on the extent of the flood plains. Finally, the water levels at the respective water bodies must also be measured (cf. quantity fronts and price sheet items 2 form 302).

The detailed surveying work to be carried out is specified in the survey plan already made available with the invitation to tender (quantities for each body of water). Appendices LB01a-LB01j define the quantity fronts of the survey planning for each lot. At the start of processing, the position of the cross-sections, longitudinal profiles, individual points, etc. specified in the preliminary planning is transferred on the basis of shape files. The shape files represent the surveying requirements shown in the quantity fronts for each body of water.

In order to supplement the profiles to be measured on structures as well as to record punctual information (zero points of gauge slats on the watercourse, flood marks, lateral junctions, etc.), individual points on the water body must be recorded. The surveyor decides on the recording of individual points on site. More detailed information can be found in Appendix LB02, Section 9.

If, during the execution of the work, the surveyor identifies additional structures or special features in the water body that are not included in the surveying requirement, these should also be recorded on site.

Up to a quantity increase of 10 % of the quantity front rates specified by the customer per lot per price item for 2, the customer must be informed of the measurement of the additional quantities promptly afterwards by e-mail. The increase in quantity is reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (Form 302). In the case of the increase in quantity described above, no approval is required on the part of the customer.

From a quantity increase of more than 10 % of the quantity front rates specified by the client per lot per price item 2, the contractor must coordinate the additional surveying requirements or the special features with the client by e-mail before they are measured. In urgent cases, it is also possible to vote by telephone. Prior to the execution of this additional surveying work, the written consent of the client is required. In the event of approval, the increase in quantity will be reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (form 302).

The Contractor shall inform the Client in advance by e-mail of the start of the surveying work (field service), its expected duration and its end.

The requirements for surveying can be found in Appendix LB02 "Specifications for Terrestrial Surveying". They must be observed and adhered to by the contractor during the preparation, execution and follow-up of the work.

The results of the survey must be checked for plausibility and submitted to the client for review and approval.

The e-mail address and telephone number for voting will be communicated to the Contractor after the contract has been awarded.

Documentation of the work and data transfer (price position 3):

Following the surveying work, the raw survey data must be checked and processed (cf. price item 3.1 of the quantity fronts and price sheet form 302) so that the survey data can be transferred as described in Appendix LB02, Section 12. The surveying work must be documented in a report, from which all work in the office (evaluation and preparation of the survey data) and field service (recording of the survey data in the field) as well as all special features on the water body can be traced (see Appendix LB02 Section 11, cf. price item 3.2 of the quantity front rates and price sheet form 302). These include the following points:

- Fundamentals Used

-Methodology

- Data preparation and data transfer

- quality assurance

Transfer and plausibility check of the existing data (price item 1):

The contractor takes over the existing data. In detail, the following data will be made available for processing:

- Overview of the sections of water to be worked on (shape file)

- Official water mileage (shape file)

- Survey planning for each body of water (shape files)

- Topographic maps, orthophotos (digital)

- Quantities per water body (table, already made available with invitation to tender)

The Contractor shall receive the above-mentioned data from the Client at the beginning of an execution period. The contractor takes over and checks the survey planning for any ambiguities (cf. price item 1.1 of the quantity fronts and price sheet form 302). After the transfer of the data or the procurement of the freely available data (link to the download page will be provided), a start meeting will take place (cf. items 1.2 and 1.3. of the quantity specifications and price sheet form 302). The initial meeting will take place as a video conference. The provision of the video conference room is carried out by the client. The duration of the initial interview is estimated at two hours. The purpose of the initial meeting is to exchange information between the contractor and the client and to clarify possible ambiguities before the start of the surveying work. The contractor prepares a summary of the meeting.

Surveying work (price items to 2):

In addition to water and structure profiles, the contractor must measure the upper edges of embankments, bank walls and longitudinal structures along the water (esp. flood protection systems) as well as flow-directing longitudinal structures on the foreland, insofar as they are not included with sufficient accuracy in the digital terrain model. Furthermore, bridges and culverts on the lower reaches of the tributaries flowing into them as well as in longitudinal structures along the waters or on the foreland must be included, insofar as they have an influence on the extent of the flood plains. Finally, the water levels at the respective water bodies must also be measured (cf. quantity fronts and price sheet items 2 form 302).

The detailed surveying work to be carried out is specified in the survey plan already made available with the invitation to tender (quantities for each body of water). Appendices LB01a-LB01j define the quantity fronts of the survey planning for each lot. At the start of processing, the position of the cross-sections, longitudinal profiles, individual points, etc. specified in the preliminary planning is transferred on the basis of shape files. The shape files represent the surveying requirements shown in the quantity fronts for each body of water.

In order to supplement the profiles to be measured on structures as well as to record punctual information (zero points of gauge slats on the watercourse, flood marks, lateral junctions, etc.), individual points on the water body must be recorded. The surveyor decides on the recording of individual points on site. More detailed information can be found in Appendix LB02, Section 9.

If, during the execution of the work, the surveyor identifies additional structures or special features in the water body that are not included in the surveying requirement, these should also be recorded on site.

Up to a quantity increase of 10 % of the quantity front rates specified by the customer per lot per price item for 2, the customer must be informed of the measurement of the additional quantities promptly afterwards by e-mail. The increase in quantity is reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (Form 302). In the case of the increase in quantity described above, no approval is required on the part of the customer.

From a quantity increase of more than 10 % of the quantity front rates specified by the client per lot per price item 2, the contractor must coordinate the additional surveying requirements or the special features with the client by e-mail before they are measured. In urgent cases, it is also possible to vote by telephone. Prior to the execution of this additional surveying work, the written consent of the client is required. In the event of approval, the increase in quantity will be reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (form 302).

The Contractor shall inform the Client in advance by e-mail of the start of the surveying work (field service), its expected duration and its end.

The requirements for surveying can be found in Appendix LB02 "Specifications for Terrestrial Surveying". They must be observed and adhered to by the contractor during the preparation, execution and follow-up of the work.

The results of the survey must be checked for plausibility and submitted to the client for review and approval.

The e-mail address and telephone number for voting will be communicated to the Contractor after the contract has been awarded.

Documentation of the work and data transfer (price position 3):

Following the surveying work, the raw survey data must be checked and processed (cf. price item 3.1 of the quantity fronts and price sheet form 302) so that the survey data can be transferred as described in Appendix LB02, Section 12. The surveying work must be documented in a report, from which all work in the office (evaluation and preparation of the survey data) and field service (recording of the survey data in the field) as well as all special features on the water body can be traced (see Appendix LB02 Section 11, cf. price item 3.2 of the quantity front rates and price sheet form 302). These include the following points:

- Fundamentals Used

-Methodology

- Data preparation and data transfer

- quality assurance

Transfer and plausibility check of the existing data (price item 1):

The contractor takes over the existing data. In detail, the following data will be made available for processing:

- Overview of the sections of water to be worked on (shape file)

- Official water mileage (shape file)

- Survey planning for each body of water (shape files)

- Topographic maps, orthophotos (digital)

- Quantities per water body (table, already made available with invitation to tender)

The Contractor shall receive the above-mentioned data from the Client at the beginning of an execution period. The contractor takes over and checks the survey planning for any ambiguities (cf. price item 1.1 of the quantity fronts and price sheet form 302). After the transfer of the data or the procurement of the freely available data (link to the download page will be provided), a start meeting will take place (cf. items 1.2 and 1.3. of the quantity specifications and price sheet form 302). The initial meeting will take place as a video conference. The provision of the video conference room is carried out by the client. The duration of the initial interview is estimated at two hours. The purpose of the initial meeting is to exchange information between the contractor and the client and to clarify possible ambiguities before the start of the surveying work. The contractor prepares a summary of the meeting.

Surveying work (price items to 2):

In addition to water and structure profiles, the contractor must measure the upper edges of embankments, bank walls and longitudinal structures along the water (esp. flood protection systems) as well as flow-directing longitudinal structures on the foreland, insofar as they are not included with sufficient accuracy in the digital terrain model. Furthermore, bridges and culverts on the lower reaches of the tributaries flowing into them as well as in longitudinal structures along the waters or on the foreland must be included, insofar as they have an influence on the extent of the flood plains. Finally, the water levels at the respective water bodies must also be measured (cf. quantity fronts and price sheet items 2 form 302).

The detailed surveying work to be carried out is specified in the survey plan already made available with the invitation to tender (quantities for each body of water). Appendices LB01a-LB01j define the quantity fronts of the survey planning for each lot. At the start of processing, the position of the cross-sections, longitudinal profiles, individual points, etc. specified in the preliminary planning is transferred on the basis of shape files. The shape files represent the surveying requirements shown in the quantity fronts for each body of water.

In order to supplement the profiles to be measured on structures as well as to record punctual information (zero points of gauge slats on the watercourse, flood marks, lateral junctions, etc.), individual points on the water body must be recorded. The surveyor decides on the recording of individual points on site. More detailed information can be found in Appendix LB02, Section 9.

If, during the execution of the work, the surveyor identifies additional structures or special features in the water body that are not included in the surveying requirement, these should also be recorded on site.

Up to a quantity increase of 10 % of the quantity front rates specified by the customer per lot per price item for 2, the customer must be informed of the measurement of the additional quantities promptly afterwards by e-mail. The increase in quantity is reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (Form 302). In the case of the increase in quantity described above, no approval is required on the part of the customer.

From a quantity increase of more than 10 % of the quantity front rates specified by the client per lot per price item 2, the contractor must coordinate the additional surveying requirements or the special features with the client by e-mail before they are measured. In urgent cases, it is also possible to vote by telephone. Prior to the execution of this additional surveying work, the written consent of the client is required. In the event of approval, the increase in quantity will be reimbursed on the basis of the agreed flat-rate unit prices in accordance with the price sheet (form 302).

The Contractor shall inform the Client in advance by e-mail of the start of the surveying work (field service), its expected duration and its end.

The requirements for surveying can be found in Appendix LB02 "Specifications for Terrestrial Surveying". They must be observed and adhered to by the contractor during the preparation, execution and follow-up of the work.

The results of the survey must be checked for plausibility and submitted to the client for review and approval.

The e-mail address and telephone number for voting will be communicated to the Contractor after the contract has been awarded.

Documentation of the work and data transfer (price position 3):

Following the surveying work, the raw survey data must be checked and processed (cf. price item 3.1 of the quantity fronts and price sheet form 302) so that the survey data can be transferred as described in Appendix LB02, Section 12. The surveying work must be documented in a report, from which all work in the office (evaluation and preparation of the survey data) and field service (recording of the survey data in the field) as well as all special features on the water body can be traced (see Appendix LB02 Section 11, cf. price item 3.2 of the quantity front rates and price sheet form 302). These include the following points:

- Fundamentals Used

-Methodology

- Data preparation and data transfer

- quality assurance