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Report for La Tour-de-Peilz, hammerdirt 2017

Contents Purpose : .................................................................................................................................................. 2

Origin of data and methodology ............................................................................................................. 2

Methodology ....................................................................................................................................... 2

Objectives ............................................................................................................................................ 2

Language, conflict of interest .................................................................................................................. 2

Beach litter survey results: all sites combined ........................................................................................ 4

Beach litter survey results: individual sites ............................................................................................. 4

Discussion: ............................................................................................................................................... 6

Conclusion: .............................................................................................................................................. 6

Recommended Actions: .......................................................................................................................... 7

Limitations of this study .......................................................................................................................... 7

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Report for La Tour-de-Peilz, hammerdirt 2017

Report beach-litter survey results: La Tour-de-Peilz

Purpose : This report was established per request of Ms. Taraneh Aminian of La Tour-de-Peilz in preparation for a planned meeting on February 21, 2017 with hammerdirt association, Ms. Taraneh Aminian and, Ms Génivieve Pasche.

Origin of data and methodology The results presented here are from a lake wide surveillance of shoreline beach litter density. This document is derived from a larger analysis. The original document, analysis results and data can be found here:

https://indd.adobe.com/view/afcb0eed-e213-4ed7-a105-5963cdfc8fab

Methodology Shannon and Roger Erismann, founding members of hammerdirt, removed, sorted and counted trash found on the shoreline of four locations within the municipal boundaries of La Tour-de-Peilz. The detailed protocol can be found in Annex b of the ln(beach-litter-density):

https://drive.google.com/file/d/0BzPFamJgOYe1S2R4WC01cDBlQzg/view

Objectives The data and analysis provided here is intended to put the litter density on the shoreline of La Tour-de-Peilz in relation to the results from the rest of the Lake. Specifically:

1. Identify categories of items that are a result of local pollution2. Identify categories of items that are a result of regional pollution3. Explore measures that can be initiated to reduce the levels of shoreline litter within the

municipality4. Understand how this data can be used to measure the efficiency of current programs and

interventions

This report is not intended to diminish the ongoing efforts of municipal workers or other NGOs in the region. The data presented here is the observations of two residents (Shannon and Roger Erismann) of the city of La Tour-de-Peilz, following a written protocol and applying common statistical methods to their observations. Critical feedback is greatly appreciated, please address all comments to info@hammerdirt.ch

Language, conflict of interest The language of this publication is English, any translations of this document into French or German are unauthorized without the express written consent of hammerdirt association. It is our intention to produce reports in French and German when the financial resources are available for this task.

Neither hammerdirt association nor the members have received any financial support from public or private sources for this report or any other activity related to the quantification of shoreline litter on Lake Geneva.

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Report for La Tour-de-Peilz, hammerdirt 2017

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Report for La Tour-de-Peilz, hammerdirt 2017

Beach litter survey results: all sites combined Four separate locations were surveyed within the municipality of La Tour-de-Peilz between March 26, 2016 and May 31, 2016. The four surveys yielded 3’318 pieces of trash with an average density of 22.96 pieces of trash per meter (pcs/m). Table 1 summarizes the combined results.

Expanded polystyrene, cigarette butts, broken pieces of plastic and cotton swabs combine to equal 62% of the categories identified. Chart 1 and table 2 summarize the composition of all items that are equal to or greater than 1% of the total.

Table 1: Beach litter survey results commune de La Tour-de-Peilz

Date

piec

es o

f gar

bage

Leng

th-m

eter

s

Dens

ity p

cs/m

Bain des Dames 26.03 594 17 34.94 Maladaire 31.03 733 60 12.21 Oyonne 10.04 717 32 22.40 Le Port 19.04 570 17 33.53 Maladaire 31.05 704 60 11.73

Table 2: Percent composition of shoreline debris La Tour-de-Peilz ; categories > 1% of total, n=3’318

Polystyrene pieces 1 > < 50 cm 27.8%

Plastic pieces 1 > <50 cm 16.8%

Cigarette butts 10.8%

Cotton swabs 6.6%

Industrial sheeting 4.5%

Candy and Chips bags 4.4%

Bottles incl. Pieces 3.2%

Bottle caps 2.3%

Paper fragments 2.0%

Plastic caps lids unidentified 1.8%

Plastic constuction waste 1.8%

Plastic rings from bottle caps/lids 1.6%

Shotgun cartridges 1.6%

Plastic caps/lids drinks 1.4%

Biomass holders 1.0%

Everything else 12.4% 0.0%

10.0%

20.0%

30.0%

40.0%

50.0%

60.0%

70.0%

80.0%

90.0%

100.0%Everything else

Biomass holders

Plastic caps drinks

Shotgun cartridges

Plastic rings frombottle capsPlastic constuctionwastePlastic capsunidentifiedPaper fragments

Bottle caps

Bottles incl. Pieces

Candy and Chips bags

Plastic films

Cotton swabs

Cigarette butts

Plastic pieces <50 cm

Polystyrene pieces < 50cm

Chart 1: Percent composition of shoreline debris La Tour-de-Peilz ; categories > 1% of total, n=3’318

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Report for La Tour-de-Peilz, hammerdirt 2017

Beach litter survey results: individual sites The four sites at La Tour-de-Peilz display two distinct composition profiles in relation to the results for Lac Léman (chart 2):

• Profile 1: elevated amount of cotton swabs and broken plastic • Profile 2: elevated amount of polystyrene pieces

The density of anthropogenic shoreline debris at La Bain-des-Dames and the Port are greater than 95% of the values recorded in the 2015-2016 operations.1 The Oyonne is greater than 90% of those values and the Maladaire falls within the 68th percentile.

See annex a for a complete list of items found at each location.

1 The full results can be seen in the document ln(beach-litter-density)

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%La

c Lé

man

Bain

des

Dam

es

Le P

ort

Mal

adai

re

Oyo

nne

Chart 2: La Tour-de-Peilz Percent composition of shoreline debris per site in relation to results for Lac Léman

Solde

Pailles et bâttonets - boissons

Métal < 50cm

Anneau de bouchon plastique

Bouchon plastique - non identifiées

Capsule bouteille - metal

Douille de fusil

Débris de chantier plastique

Papier

Bouchon plastique boisson

Débris de verre

Film plastique

Coton-tiges

Emballages friandises

Plastic < 50cm

Mégots

Styromousse < 50cm

1

2

1

2

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Report for La Tour-de-Peilz, hammerdirt 2017

Discussion: The results from La Tour-de-Peilz represent single samples from specific locations. Statistical inference from these results is not possible except in relation to the larger sample group. However, the elevated proportion of cotton swabs and lower proportion of Styrofoam at the Port and Bain-des-Dames may be significant because of the proximity to each other and the existing infrastructure.

Within the confines of the port infrastructure (image 1) at least two stormwater drains can be identified using the interactive map from www.cartoriviera.ch.

The breakwater surrounding the port could act as a barrier from debris originating from the lake like Styrofoam while simultaneously trapping the objects that are discharged from the stormwater drains.

The results from “Operation Riviere Propre” i do not indicate any unmonitored discharges of waste-water in the immediate area.2

When the density values for all locations on the lake are compared, locations with less than 10 surveys (like La Tour-de-Peilz) tend to have a higher density and encompass a greater range of densities. Furthermore, the surveys at La Tour-de-Peilz happened during and after the quadrennial event (chart 3). These two periods can also be characterized with a greater average density.3

Conclusion: The density values found at La Tour-de-Peilz are elevated when compared to the average of Lac Léman. Howver, given the amount of samples taken and the date range they were taken it is impossible to determine if the density is persistently elevated.

2 Operation Riviere Propre is a project by the Association pour la sauvegarde du Léman : http://asleman.org/ 3 See annex b of the ln(beach-litter-density)

Image 1:Map of stormwater drains and survey locations, the Port and Bain des Dames

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Report for La Tour-de-Peilz, hammerdirt 2017

Recommended Actions: 1. Contact neighboring communities to identify common problems and solutions2. We strongly recommend monitoring of the area, at least to determine the base line density for

the region and verify the elevated density of cotton swabs3. Investigate with the local water board the connections with the two storm-water drains that are

located within the Port4. Engage the local rowing, sailing and lifeguard groups to participate in monitoring and surveillance

of aquatic litter in the immediate area of the Port5. Facilitate and simplify the marking of storm-water drains throughout the basin. Use simple

measures like stencils and nontoxic paint combined with art designed by students in the region. These activities go a long way to raising awareness and encouraging participation.

Limitations of this study The data collection is repetitive and requires a certain amount of physical effort, the categorization of objects is tedious, subjective and could be described as “déplaisante” or “unpleasant”. Litter collection happens along the lake therefore weather and seasonal changes may influence collection and sorting for example; the shore may be snow covered or waves may limit site exposure. Logistically it is not feasible to keep samples, limiting the opportunities to do recounts to evaluate categorization variances between volunteers.

This is a hammerdirt publication

Contact: info@hammerdirt.ch

Annex A : list of objects found La Tour de PEilz

Location Bain des DaMaladaire Oyonne Le Port MaladairePlastic bags collective role 0 1 0 0 0Drink bottles <= 0.5l 0 0 1 0 0Drink bottles => 0.5l 0 0 2 0 0Food containers/fast food containers 4 0 17 0 2Plastic caps lids unidentified 19 6 10 23 2Plastic caps/lids drinks 9 8 6 11 14Plastic caps/lids chemicals and detergents 8 15 0 0 8Plastic rings from bottle caps/lids 13 9 0 16 15Tobacco pouches 7 3 1 0 6Cigarette lighters 7 2 2 0 2Cigarette butts 53 133 73 22 77Candy and Chips bags 23 37 17 26 42Lolipop sticks 3 4 5 1 6Cups and cup lids 2 0 1 5 3Toys and fireworks 5 12 5 2 4Cutlery and trays 0 0 2 3 0Straws and stirers 6 2 6 12 0String/cord < 1cm 1 0 0 0 0Fishing line 0 0 1 0 0Strapping bands 4 0 1 13 4Industrial sheeting, industrial packaging 36 23 3 72 15Shotgun cartridges 16 10 8 8 10Plastic pieces 1 > <50 cm 166 126 47 167 51Polystyrene pieces 1 > < 50 cm 43 184 343 28 325Cotton swabs 59 31 6 86 38Sanitary towels/tampons and backing strips 1 0 0 0 4Toilet freshners 0 0 0 0 1Medical/Pharma containers and tubes 4 2 10 1 4Biomass holders sewage treatment 8 5 0 11 9Other medical items 4 1 0 0 0Plastic constuction waste 7 16 10 0 26Dog feces bags 0 0 1 0 0Bottles incl. Pieces 27 17 13 36 14Construction material 0 0 17 0 0Bottle caps 16 25 12 14 8Aerosol spray cans 0 0 1 0 0Beverage cans 0 0 6 0 0Foil wrappers 0 4 11 2 5Wire, wire mesh, barbed wire 2 0 10 1 0Other metal  <  50cm 11 5 15 0 0Cartons/Tetrapack other 0 1 0 0 0Cigarette packets 9 0 0 0 0Cups, food trays, wrappers, drink containers 0 0 3 0 0Paper fragments 10 27 29 2 0Other paper items 0 0 1 0 0Corks 0 1 6 0 2Ice‐cream sticks, chip forks 0 0 1 0 0Processed timber 0 0 2 0 0Ballons and balloon sticks 0 1 1 3 1

Annex A : list of objects found La Tour de PEilz

Location Bain des DaMaladaire Oyonne Le Port MaladaireBalls 0 1 0 0 2small plastic bags 1 5 3 0 1cleaner bottles 0 0 0 0 1beach use cosmetics 0 2 3 0 0Other cosmetics 0 1 0 0 0Other bottles and containers 2 0 0 0 0Pens and pen lids 2 3 2 3 0Plastic flower pots 1 1 1 0 0Syringes and needles  1 0 0 0 2Floats for fishing nets 0 1 0 0 0Parafin/wax 1 1 0 0 0Rope, string nets 1 0 0 2 0Other textiles ‐ rags 0 6 0 0 0Disposable BBQ 0 1 0 0 0Other > 50cm 0 0 2 0 0Rubber bands 2 0 0 0 0Daily Total 594 733 717 570 704MLW categories 39 39 44 26 32Density 34.9 12.2 22.4 33.5 11.7