Data from San Diego Beach Cleanups

San Diego Coastkeeper and the Surfrider Foundation San Diego County Chapter partner each year to conduct a series of public beach cleanups, averaging four per month, in order to address the issue of trash in our oceans and on our beaches. In addition to these cleanups, both organizations also host special cleanup events and empower individual volunteers to host their own. These events combined have lead to the removal of over 72,325 pounds of trash from our beaches and waterways since 2007.

In 2015, the program maintained a lot of the momentum of 2014, seeing a slight decrease in volunteerism with resulting dips in total weight of trash removed and the total item count, but interesting increases in specific items, such as cigarette butts. This year 7,360 volunteers removed 197,788 items of trash, weighing 9,825 pounds total, from along the coastline. In 2014, 7,752 volunteers removed 212,684 items of trash, weighing 11,428 pounds total, from along the coastline. While we applaud consistency of volunteers and are heartened to see decreases in certain trash types, we are still troubled by the amount of debris being collected overall.

Last year, Mission Bay – Fiesta Island topped the charts with most trash collected per volunteer with an average of 3.43 pounds of trash per volunteer. The beach took the dubious award again in 2015, with an increase to 4.68 pounds of trash removed per volunteer. Fiesta Island also had the most trash removed by overall weight for the second year in a row, with a total of 788 pounds of trash collected at that location in 2015.

Most Trash Per Volunteer Effort

year beach lbs vol table

Types of Items Removed in 2015

43% of debris collected was plastic.
The percent of plastic found in the total items collected this year stayed roughly the same this year as last. This count, however, does not include cigarette butts, which contain a plastic foam filter. Including cigarette butts, that percentage jumps 82 percent. Plastics are particularly damaging to the marine environment, as they do not biodegrade, and are easily ingested by wildlife. Many of the plastics collected were pieces less than one inch in diameter, and much of it was non-recyclable expanded polystyrene foam, or Styrofoam(r).

14,896 fewer items were collected in 2015 than 2014.
2015 saw a slight decrease in the total number of items removed, likely due in part to the slight decrease in volunteers collecting beach trash compared to last year. Item counts include trash of many sizes, from the tiniest shards of plastic food wrappers, to the largest discarded comforters or crates, and everything in between. The amount of trash on our beaches continues to be staggering, and there is plenty of trash for volunteers to find.

Cigarette butts topped the list in 2015.
Yet again, cigarettes and cigarette butts were the most prevalent type of debris found at our beach cleanups. In 2014, volunteers removed 75,069 cigarette butts from our beaches, and this year that number rose to 79,083, despite decreases volunteers and in other trash types found. Littered butts continue to be a major concern for the health of San Diego County beaches. Cigarette butts are non-biodegradable and leach toxins into the water, poisoning marine life. They also move with ease through the City’s stormwater system, meaning a cigarette butt need not be dropped directly at the beach in order to find its way there eventually.

Intact plastic bags continue to be one of the less common items.
The total number of fully intact plastic bags found was 4,552, representing just 2% of total items removed. This continues the trend of decreases in bag totals. In 2014, volunteers removed 5,489 bags representing 3% of the total items collected. This may indicate a decrease in the use of plastic bags, the success of regional bag bans, or an increase in recycling or proper disposal. This number may also reflect the possibility that bags, being very light and mobile, do not tend to stay on flat surfaces such as a sandy beaches for long before moving into the water. Bags are a far more common item in canyon and riverbed cleanups, where they tend to get tangled on rocks or vegetation. An additional reason we may not be seeing as many plastic bags on our beaches over the past few years could be the result of ongoing drought conditions. The reduced rainfall and low water flows may not be enough to push the bags out of the canyons and streamside vegetation. Due to their disproportionately dangerous impacts on marine wildlife, limiting plastic bags should continue to be encouraged. It should also be noted that the thin nature of plastic bags mean they are easily broken down into smaller pieces, and these small pieces would be counted as other plastics. It is likely that plastic bags are a larger environmental problem than our stats are showing.

Top 3 items of concern:

  • Cigarette Butts (79,083)
  • Plastic Wrappers/Pieces (17,342)
  • Plastic Foam (13,970)

The Usual 
In addition to collecting data on common beach debris such as cigarette butts, plastic foam, and water bottles, volunteers are also asked to note any “unusual items” they find during the course of the cleanup. Over the years we have noticed some “unusual” items documented so frequently that they have ceased to be a surprise, and are in fact relatively common. Our top three unusual items in 2015 were consistent with those in years past: condoms, tampons, and glow sticks. While we can only guess at the reasons for the prevalence of the first two, glow sticks are frequently used in night fishing as a fish aggregation device, and are being discarded or littered after use.