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Page 1 of 7
Report for La Tour-de-Peilz, hammerdirt 2017
Contents
Purpose :..................................................
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Report for La Tour-de-Peilz, hammerdirt 2017
Report beach-litter survey results: La Tour-de-Peilz
Purpose :
Th...
Page 3 of 7
Report for La Tour-de-Peilz, hammerdirt 2017
Page 4 of 7
Report for La Tour-de-Peilz, hammerdirt 2017
Beach litter survey results: all sites combined
Four separate loc...
Page 5 of 7
Report for La Tour-de-Peilz, hammerdirt 2017
Beach litter survey results: individual sites
The four sites at L...
Page 6 of 7
Report for La Tour-de-Peilz, hammerdirt 2017
Discussion:
The results from La Tour-de-Peilz represent single sa...
Page 7 of 7
Report for La Tour-de-Peilz, hammerdirt 2017
Recommended Actions:
1. Contact neighboring communities to identi...
Annex A : list of objects found La Tour de PEilz
Location Bain des DaMaladaire Oyonne Le Port Maladaire
Plastic bags colle...
Annex A : list of objects found La Tour de PEilz
Location Bain des DaMaladaire Oyonne Le Port Maladaire
Balls 0 1 0 0 2
sm...
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Shoreline litter density La Tour-de-Peilz

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Using composition and density to identify possible sources of sewage contamination at La Tour-de-Peilz

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Shoreline litter density La Tour-de-Peilz

  1. 1. Page 1 of 7 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
  2. 2. Page 2 of 7 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 pollution 2. Identify categories of items that are a result of regional pollution 3. Explore measures that can be initiated to reduce the levels of shoreline litter within the municipality 4. 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.
  3. 3. Page 3 of 7 Report for La Tour-de-Peilz, hammerdirt 2017
  4. 4. Page 4 of 7 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 piecesofgarbage Length-meters Densitypcs/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 from bottle caps Plastic constuction waste Plastic caps unidentified Paper fragments Bottle caps Bottles incl. Pieces Candy and Chips bags Plastic films Cotton swabs Cigarette butts Plastic pieces <50 cm Polystyrene pieces < 50 cm Chart 1: Percent composition of shoreline debris La Tour-de-Peilz ; categories > 1% of total, n=3’318
  5. 5. Page 5 of 7 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% LacLéman BaindesDames LePort Maladaire Oyonne 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
  6. 6. Page 6 of 7 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
  7. 7. Page 7 of 7 Report for La Tour-de-Peilz, hammerdirt 2017 Recommended Actions: 1. Contact neighboring communities to identify common problems and solutions 2. 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 swabs 3. Investigate with the local water board the connections with the two storm-water drains that are located within the Port 4. Engage the local rowing, sailing and lifeguard groups to participate in monitoring and surveillance of aquatic litter in the immediate area of the Port 5. 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
  8. 8. Annex A : list of objects found La Tour de PEilz Location Bain des DaMaladaire Oyonne Le Port Maladaire Plastic bags collective role 0 1 0 0 0 Drink bottles <= 0.5l 0 0 1 0 0 Drink bottles => 0.5l 0 0 2 0 0 Food containers/fast food containers 4 0 17 0 2 Plastic caps lids unidentified 19 6 10 23 2 Plastic caps/lids drinks 9 8 6 11 14 Plastic caps/lids chemicals and detergents 8 15 0 0 8 Plastic rings from bottle caps/lids 13 9 0 16 15 Tobacco pouches 7 3 1 0 6 Cigarette lighters 7 2 2 0 2 Cigarette butts 53 133 73 22 77 Candy and Chips bags 23 37 17 26 42 Lolipop sticks 3 4 5 1 6 Cups and cup lids 2 0 1 5 3 Toys and fireworks 5 12 5 2 4 Cutlery and trays 0 0 2 3 0 Straws and stirers 6 2 6 12 0 String/cord < 1cm 1 0 0 0 0 Fishing line 0 0 1 0 0 Strapping bands 4 0 1 13 4 Industrial sheeting, industrial packaging 36 23 3 72 15 Shotgun cartridges 16 10 8 8 10 Plastic pieces 1 > <50 cm 166 126 47 167 51 Polystyrene pieces 1 > < 50 cm 43 184 343 28 325 Cotton swabs 59 31 6 86 38 Sanitary towels/tampons and backing strips 1 0 0 0 4 Toilet freshners 0 0 0 0 1 Medical/Pharma containers and tubes 4 2 10 1 4 Biomass holders sewage treatment 8 5 0 11 9 Other medical items 4 1 0 0 0 Plastic constuction waste 7 16 10 0 26 Dog feces bags 0 0 1 0 0 Bottles incl. Pieces 27 17 13 36 14 Construction material 0 0 17 0 0 Bottle caps 16 25 12 14 8 Aerosol spray cans 0 0 1 0 0 Beverage cans 0 0 6 0 0 Foil wrappers 0 4 11 2 5 Wire, wire mesh, barbed wire 2 0 10 1 0 Other metal  <  50cm 11 5 15 0 0 Cartons/Tetrapack other 0 1 0 0 0 Cigarette packets 9 0 0 0 0 Cups, food trays, wrappers, drink containers 0 0 3 0 0 Paper fragments 10 27 29 2 0 Other paper items 0 0 1 0 0 Corks 0 1 6 0 2 Ice‐cream sticks, chip forks 0 0 1 0 0 Processed timber 0 0 2 0 0 Ballons and balloon sticks 0 1 1 3 1
  9. 9. Annex A : list of objects found La Tour de PEilz Location Bain des DaMaladaire Oyonne Le Port Maladaire Balls 0 1 0 0 2 small plastic bags 1 5 3 0 1 cleaner bottles 0 0 0 0 1 beach use cosmetics 0 2 3 0 0 Other cosmetics 0 1 0 0 0 Other bottles and containers 2 0 0 0 0 Pens and pen lids 2 3 2 3 0 Plastic flower pots 1 1 1 0 0 Syringes and needles  1 0 0 0 2 Floats for fishing nets 0 1 0 0 0 Parafin/wax 1 1 0 0 0 Rope, string nets 1 0 0 2 0 Other textiles ‐ rags 0 6 0 0 0 Disposable BBQ 0 1 0 0 0 Other > 50cm 0 0 2 0 0 Rubber bands 2 0 0 0 0 Daily Total 594 733 717 570 704 MLW categories 39 39 44 26 32 Density 34.9 12.2 22.4 33.5 11.7

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