SIST CWA 17916:2022

Rooting nuisance (alien) aquatic plants - Control by means of rake method with a boat

This document describes a rake method with a boat for removing nuisance rooting aquatic plants and for  managing their growth. It also describes the requirements for this method, and sets out how work should be carried out in the field.
The rake method can be used for inland waterways with a depth of 0.6 m or more.

Krautung von störenden (artfremden) Wasserpflanzen - Verfahren mittels Rechen und Mähboot

Ukoreninjenje motečih (tujerodnih) vodnih rastlin - Nadzor z metodo grabljenja s čolnom

Ta dokument opisuje metodo grabljenja s čolnom za odstranjevanje motečih ukoreninjenih vodnih rastlin in obvladovanje njihove rasti. Opisuje tudi zahteve za to metodo in določa, kako naj poteka delo na terenu.
Metodo grabljenja je mogoče uporabiti za celinske vodne poti z globino 0,6 m ali več.

General Information

• Status: Published
• Publication Date: 19-Sep-2022
• ICS: 03.220.40 - Transport by water
• ICS: 07.060 - Geology. Meteorology. Hydrology
• ICS: 13.060.10 - Water of natural resources
• ICS: 47.060 - Inland navigation vessels
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 16-Sep-2022
• Due Date: 21-Nov-2022
• Completion Date: 20-Sep-2022
• Ref Project: CWA 17916:2022 - Rooting nuisance (alien) aquatic plants - Control by means of rake method with a boat

Standards Content (Sample)

SLOVENSKI STANDARD
SIST CWA 17916:2022
01-november-2022
Ukoreninjenje motečih (tujerodnih) vodnih rastlin - Nadzor z metodo grabljenja s
čolnom

Rooting nuisance (alien) aquatic plants - Control by means of rake method with a boat

Ta slovenski standard je istoveten z: CWA 17916:2022
ICS:
07.060 Geologija. Meteorologija. Geology. Meteorology.
Hidrologija Hydrology
13.060.10 Voda iz naravnih virov Water of natural resources
SIST CWA 17916:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST CWA 17916:2022
---------------------- Page: 2 ----------------------
SIST CWA 17916:2022
CEN
CWA 17916
WORKSHOP
September 2022
AGREEMENT
ICS 03.220.40; 47.060
English version
Rooting nuisance (alien) aquatic plants - Control by means
of rake method with a boat

This CEN Workshop Agreement has been drafted and approved by a Workshop of representatives of interested parties, the

constitution of which is indicated in the foreword of this Workshop Agreement.

The formal process followed by the Workshop in the development of this Workshop Agreement has been endorsed by the

National Members of CEN but neither the National Members of CEN nor the CEN-CENELEC Management Centre can be held

accountable for the technical content of this CEN Workshop Agreement or possible conflicts with standards or legislation.

This CEN Workshop Agreement can in no way be held as being an official standard developed by CEN and its Members.

This CEN Workshop Agreement is publicly available as a reference document from the CEN Members National Standard Bodies.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,

Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North

Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.

Ref. No.:CWA 17916:2022 E
---------------------- Page: 3 ----------------------
SIST CWA 17916:2022
CWA 17916:2022 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Requirements imposed on parties and equipment ............................................................................ 7

4.1 Client .................................................................................................................................................................... 7

4.2 Contractor .......................................................................................................................................................... 7

4.3 External ecological expert ........................................................................................................................... 8

4.4 Equipment ......................................................................................................................................................... 8

5 Protocol .............................................................................................................................................................. 9

5.1 Step 1 Survey of future work area and awarding the order ............................................................ 9

5.2 Step 2 Survey the vegetation ....................................................................................................................... 9

5.3 Step 3 Prepare a work plan ......................................................................................................................... 9

5.4 Step 4 Choice of rake ................................................................................................................................... 10

5.5 Step 5 Determining the direction of the work ................................................................................... 10

5.6 Step 6 Complete documentation before and during the work ..................................................... 11

5.7 Step 7 Check the craft for the absence of plant fragments ............................................................ 11

5.8 Step 8 LMRA and checklist prior to starting raking ......................................................................... 11

5.9 Step 9 Launching the craft ......................................................................................................................... 11

5.9.1 With a slow-traffic trailer .......................................................................................................................... 11

5.9.2 With a mobile crane .................................................................................................................................... 11

5.10 Step 10 Start of the work ........................................................................................................................... 12

5.10.1 Raking............................................................................................................................................................... 12

5.10.2 Clean up ........................................................................................................................................................... 13

5.10.3 Refuelling/maintenance ............................................................................................................................ 13

5.11 Step 11 Cleaning the craft.......................................................................................................................... 14

5.12 Step 12 Sign the documents and complete the order ...................................................................... 14

Annex A (normative) Preparatory actions to determine the content of the work plan with

an ecological work protocol ..................................................................................................................... 15

Annex B (informative) Rake specification ....................................................................................................... 16

B.1 Choice of rake tines ..................................................................................................................................... 16

B.2 Specification of the tines............................................................................................................................ 16

B.2.1 Coarse tines, 30 cm long ............................................................................................................................ 16

B.2.2 Small tines, 15 cm long ............................................................................................................................... 16

Annex C (normative) Checklist before starting raking ................................................................................ 17

C.1 Documents ...................................................................................................................................................... 17

C.2 Maintenance ................................................................................................................................................... 17

Bibliography ................................................................................................................................................................. 18

---------------------- Page: 4 ----------------------
SIST CWA 17916:2022
CWA 17916:2022(E)
European foreword

This CEN Workshop Agreement (CWA 17916:2022) was developed in accordance with CEN-CENELEC

Guide 29 “CEN/CENELEC Workshop Agreements – A rapid prototyping to standardization” and with the

relevant provisions of CEN/CENELEC Internal Regulations - Part 2. It was approved by a Workshop of

representatives of interested parties on 2022-06-22, the constitution of which was supported by CEN

following a public call for participation made on 2022-04-04. However, this CEN Workshop Agreement

does not necessarily include all relevant stakeholders.

The final text of CWA 17916:2022 was submitted to CEN for publication on 2022-07-15.

The following organizations and individuals developed and approved this CEN Workshop Agreement:

— Environment Agency: Jonathan Newman, Trevor Renals
— French IAS Resource Center: Alain Dutartre
— Harkboot.nl B.V.: Leon Sterk, Veronique Jeunhomme
— IUCN: Kevin Smith
— Netherlands Food and Consumer Product Safety Authority: Johan van Valkenburg
— Université Lorraine: Elisabeth Gross
— Roelf Pot Research and Consultancy: Roelf Pot
— Sportvisseij Nederland: Willie van Emmerik
— Sportvisserij Groningen Drente: Henk Mensinga
— Harkboot.nl B.V.: Leon Sterk, Veronique Jeunhomme

Attention is drawn to the possibility that some elements of this document may be subject to patent rights.

CEN-CENELEC policy on patent rights is described in CEN-CENELEC Guide 8 “Guidelines for

Implementation of the Common IPR Policy on Patent”. CEN shall not be held responsible for identifying

any or all such patent rights.

Although the Workshop parties have made every effort to ensure the reliability and accuracy of technical

and non-technical descriptions, the Workshop is not able to guarantee, explicitly or implicitly, the

correctness of this document. Anyone who applies this CEN Workshop Agreement shall be aware that

neither the Workshop, nor CEN, can be held liable for damages or losses of any kind whatsoever. The use

of this CEN Workshop Agreement does not relieve users of their responsibility for their own actions, and

they apply this document at their own risk. The CEN Workshop Agreement should not be construed as

legal advice authoritatively endorsed by CEN/CENELEC.
---------------------- Page: 5 ----------------------
SIST CWA 17916:2022
CWA 17916:2022 (E)
Introduction

This CWA describes how a rake method with a boat should be used to remove nuisance rooting aquatic

plants. The rake method is an effective but drastic method to reduce the number of aquatic plants in

waterways, and therefore it should be applied correctly. The rake method can produce a long-lasting

solution for an excess of native rooted aquatic plants and alien rooted aquatic plants [invasive alien

species]. The rake method takes account of the wellbeing of aquatic fauna, including fishhealth, and

preventing unnecessary fish mortality.

For water-management clients, this document is intended as a guideline for having maintenance work

and the full or partial removal of aquatic plants including roots carried out in a sustainable and

ecologically responsible manner.

Contractors that comply with this standard may state this and use it to obtain an award advantage during

tenders.
SDGs

This document makes a contribution to the following Sustainable Development Goals (SDGs) that were

agreed by the United Nations:
— SDG 6 'Clean water and sanitation';
— SDG 13 'Climate action';
— SDG 14 'Life below water';
— SDG 15 'Life on land'.
---------------------- Page: 6 ----------------------
SIST CWA 17916:2022
CWA 17916:2022(E)
1 Scope

This document describes a rake method with a boat for removing nuisance rooting aquatic plants and for

managing their growth. It also describes the requirements for this method, and sets out how work should

be carried out in the field.
The rake method can be used for inland waterways with a depth of 0.6 m or more.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 14614, Water quality – Guidance standard for assessing the hydromorphological features of rivers

EN 15460, Water quality – Guidance standard for the surveying of macrophytes in lakes

EN 15940, Automotive fuels – Paraffinic diesel fuel from synthesis or hydrotreatment – Requirements and

test methods

ISO 15380, Lubricants, industrial oils and related products (class L) – Family H (Hydraulic systems) –

Specifications for hydraulic fluids in categories HETG, HEPG, HEES and HEPR

ASTM D8029-18, Standard Specification for Biodegradable, Low Aquatic Toxicity Hydraulic Fluids

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
operations consultant

adequately trained person in the area of aquatic ecology and vegetation who provides advice on removing

aquatic plants

NOTE 1 to entry: national legislation may exist. If the operations consultant complies with the requirements of

Article 3.4 of the Code of Conduct Nature Conservancy for Water Boards, this person may also act as an ecological

expert.
3.2
Basic Safety SCC
B-SCC

certification in the area of health and safety at work, focused on employees who work in a hazardous

environment without a leadership role
3.3
CE marking

marking for a product that complies with the applicable rules within the European Economic Area

3.4
sustainability
being financially and ecologically responsible in the long term
---------------------- Page: 7 ----------------------
SIST CWA 17916:2022
CWA 17916:2022 (E)
3.5
ecological expert

person who is formally trained in the field and/or is recognized by an authoritative organisation as such

NOTE 1 to entry: in some countries legislation exists, e.g. in the Netherlands requirements are imposed by Article

3.4 of the Code of Conduct Nature Conservancy for Water Boards
3.6
ecological work protocol

protocol that describes how damage to protected or unprotected flora and fauna is prevented or limited

(mitigated) to an acceptable level during the work
3.7
Most economically advantageous tender
MEAT

tender where not only the price, but qualitative and/or social factors form part of the award criteria

3.8
external monitoring

systematic tracking of developments in the ecological and general quality of the raked area by a third

party
3.9
rake method
method of using a rake to remove rooting aquatic plant, roots and all
3.10
hydrotreated vegetable oil 100 %
HVO 100

unmixed biodiesel made of waste vegetable oil and waste oil that was treated with hydrogen in

accordance with EN 15940
3.11
Last Minute Risk Analysis
LMRA
final check before starting the work to make sure the situation is safe
NOTE 1 to entry: This is a requirement imposed by the SCC certificate.
3.12
Dredge type developed by Satake 1987

aquatic plant sampling tool that is a type of rake where the tines are on a ring and point in the direction

of the line
3.13
shipping inspectorate quality label
NSI quality label

safety quality label for professionally used vessels and seagoing pleasure craft that are smaller than 24 m

3.14
Health, Safety and Environment Checklist for Contractors
SCC certificate

certificate based on a management system to guarantee safety during work, which describes all the risks,

control measures and the action plan for permanent workplaces
---------------------- Page: 8 ----------------------
SIST CWA 17916:2022
CWA 17916:2022(E)
3.15
(provisional) community inland navigation certificate
(p)CINC

compulsory provisional certificate for floating equipment to sail on European waters

3.16
SCC for operational managers
SOS-SCC

certificate for health and safety at work, focused on managerial employees and self-employed persons

3.17
double-headed garden rake

aquatic plant sampling tool that is a type of rake that consists of two rake heads bound or welded together

back to back, and attached to a line of at least 10 m
3.18
alien species

any live specimen of a species, subspecies or lower taxon of animals, plants, fungi or micro- organisms

introduced outside its natural range; it includes any part, gametes, seeds, eggs or propagules of such

species, as well as any hybrids, varieties or breeds that might survive and subsequently reproduce;

[SOURCE: Regulation (EU) No 1143/2014 of the European Parliament and of the Council of 22 October

2014 on the prevention and management of the introduction and spread of invasive alien species]

3.19
invasive alien species

alien species whose introduction or spread has been found to threaten or adversely impact upon

biodiversity and related ecosystem services;

[SOURCE: Regulation (EU) No 1143/2014 of the European Parliament and of the Council of 22 October

2014 on the prevention and management of the introduction and spread of invasive alien species]

4 Requirements imposed on parties and equipment
4.1 Client

The client shall comply with the MEAT criterion for tendered services for CO reductions based on e.g.

ISO 14001 or other ISO standards related to the prevention, reduction and/or mitigation of CO

emissions
4.2 Contractor
The contractor shall:
a) Have implemented a certified CO management system;

b) Work on the basis of a work plan with an ecological work protocol that is prepared by an ecological

expert in accordance with any national legislation that may exist, e.g. in the Netherlands that would

be Article 3.4 of the Code of Conduct Nature Conservancy for Water Boards; see Annex A for the

points of attention;
c) Have at least a SCC certificate.
Operational staff shall at least:
---------------------- Page: 9 ----------------------
SIST CWA 17916:2022
CWA 17916:2022 (E)
a) Have B-SCC or SOS-SCC in function of their job;

b) Have proven knowledge of the effect of their work on the ecology, where aquatic plant recognition

and identifying anoxia are key to safeguarding and improving biodiversity and preventing fish

mortality;

c) Work in accordance that with any legislation that may apply, e.g. in the Netherlands with the Code of

Conduct Nature Conservancy for Water Boards.
Chief Engineers of the craft shall:
a) Comply with the requirements for operational staff;

b) If required for the area and the specific craft: have a boatmaster's certificate 1 and/or 2;

c) Be able to recognise and distinguish alien plants;

d) Scored a pass for the practical assessment of knowledge and skills required to operate a rake boat

(e.g. on the basis of a course organised by the company of the contractor);

e) Work safely with the rake method and sail safely, in accordance with the requirements in section 5

of this document.
4.3 External ecological expert

An external ecological expert may be consulted to determine the types of aquatic plants that are present

and to what extent. If the present species are expected to include alien species that could be easily

confused with other natural species, an external ecological expert has to be engaged to identify the

species.
Monitoring the species of aquatic plants takes place if required by the client.

The external ecological expert uses the following procedure for identification and monitoring:

1) Take random samples of the aquatic plants in the stretch that needs to be cleaned up and identify

them. Use a garden rake on a long handle, a double-headed garden rake, or a dredge type developed

by Satake 1987 as a sampling tool. Sample from the bank or from a craft, depending on the

dimensions of the water.

2) Take at least twenty samples in the work area. If there are areas with distinctive morphological or

ecological features, take at least three samples per distinctive area.

3) On the basis of the sample, prepare an estimate of the total cover of the submerged aquatic plants

and of the individual species. For a linear water, estimate the cover of the waterway. In the case of

clear zoning, estimate the cover and the fill per zone.

4) Use the working method described in EN 14614, EN 15460, and other relevant national standards.

5) Send the results of the surveys to the client and the contractor.
4.4 Equipment

The contractor’s equipment (craft and rake) should comply with one of the following requirements:

— The equipment is certified on the basis of the community inland navigation certificate.

---------------------- Page: 10 ----------------------
SIST CWA 17916:2022
CWA 17916:2022(E)

— There is an application statement for the certification of existing floating equipment available for the

equipment.

— The equipment is certified in accordance with the requirements of the (provisional) community

inland navigation certificate ((p)CINC).
The equipment also complies with the following:

— The equipment is proven to comply with statutory requirements, such as CE marking and the NSI

quality label.

— The manufacturer’s technical construction file is complete and is available for inspection on request.

This file contai
...