The environmental issues on Maury Island are linked to broader Puget Sound environmental issues, which include concerns regarding declining salmon and forage fish populations, degrading critical marine and shoreline habitats, and threatened species such as the Orca.

Many of these concerns are centered on the proposed expansion of a gravel site owned by Glacier Northwest.

Gravel mining on Maury Island

The primary environmental issue on Maury Island is Glacier Northwest's proposal to expand its gravel mine, located in the southern part of the island. Glacier Northwest has operated the mine on the island since the 1940s. In 1998 it announced its proposal to expand the operation to approximately 7.5 million tons of gravel a year. In a presentation at the University of Washington in April 2005, Glacier Northwest senior executives claimed that the expansion of its South Maury Island mine is in the interest of the Pacific Northwest as a whole. They claimed Washington uses approximately 75 million tons of gravel and sand per year. The Seattle/Tacoma area uses 48% of all sand and gravel, making the South Maury Island site centrally located for supplying this demand. They estimated economic growth in the Puget Sound region between 2000-2020 would require an additional 22 million tons of gravel per year. They also claimed that Washington, and particularly the Seattle/Tacoma area, may benefit from an expansion of local sand and gravel mines. There is also potential for the construction of a third runway at the Seattle-Tacoma International Airport that would require large quantities of sand and gravel. Many people believe that South Maury Island is one of the most sensitive places to mine due to the amount of wildlife the area supports; however, Glacier Northwest claimed that mining on the island and barging the gravel off the site will have fewer environmental impacts than would mining somewhere else and transporting the gravel by truck. Grassroots efforts and litigation postponed the proposed expansion, and eventually led to an agreement in 2010 where a county park would replace the mine.

Glacier Northwest's proposed mining expansion has stirred response in the government. U.S. Senator Patty Murray, a senior member of the Appropriations Committee, has pushed measures for economic development and environmental and public safety initiatives throughout Washington, one of which concerns the conservation of Maury Island. Providing approximately $2 million, this bill would contribute to the goal of local organizations, such as POI, of preserving the threatened 250 acres (1 km²) that are home to the state's largest Madrona forests, as well as its shoreline habitats. By incorporating funds from local, state, and private sources, this bill would promote responsible, cost efficient local stewardship.

Among the key figures in the conflict is former Washington Governor Booth Gardner, also a member of Preserve Our Islands. In a presentation given at the University of Washington for the Society and Oceans Course on April 26, 2005, Gardner expressed his support for POI and his personal philosophy on understanding both sides of the South Maury Island/Glacier Northwest mining issue and acknowledging the importance of one's personal view and the opponent's stance.

Proponents in favor of Gravel mining by Glacier Northwest on Maury Island argued that mining the Maury Island site would provide a small number of jobs for people on the island and in surrounding areas, while operations were estimated to continue for the 20 to 30 years, depending on business and demand. Additionally, the aggregate resources do not produce much waste material when mined, and are therefore beneficial and cost effective for the region. The sand, gravel, and quarry rock from the Maury Island site would be distributed throughout the Pacific Northwest region to be used for building roadways and houses, creating concrete, and making other products such as roof tiles and cement blocks.

Arsenic contamination

Studies over the past 30 years have shown that the soil in some areas of Vashon-Maury Island has elevated concentrations of arsenic, lead, and cadmium, probably due to decades of copper smelting operations in Ruston, Washington, located just south of the southern tip of Vashon Island. When examined by area, the data indicates the most serious arsenic contamination is in South Vashon-Maury Island.

One risk associated with Glacier Northwest's plan for expansion involves amassing thousands of tons of arsenic-contaminated soil into a large, plastic container. Due to decades of downwind fallout from the ASARCO copper smelter near Tacoma, the top layer of earth on Maury Island is laden with toxins, including arsenic, which was found in concentrations nearly double those requiring industrial cleanup and 20 times those of residential standards. Glacier Northwest plans to bulldoze the top 18 inches of soil and store it in an enormous berm, which would store large amounts of hazardous wastes for 50–75 years.

Water supply

An issue that the residents of South Maury Island face as a result of the proposed expansions of the Glacier Northwest gravel mine is a possible threat to the residents' drinking water supply. The aquifer on South Maury Island relies on rainwater to sustain it. The rainwater is absorbed by the ground and is filtered through hundreds of feet of soil to a layer of permeable rock that holds the water. According to the EPA, the aquifer supplies 71% of the drinking water for island residents, making it the primary source of drinking water on the island, and making contamination of the aquifer system a significant hazard to public health. If the supply were to be contaminated, no reasonably available alternative source of drinking water could replace the aquifer system. According to POI, it is proposed that Glacier Northwest would mine to within 15 feet of the aquifer. This could lead to possible disruptions and contamination of the aquifer flow and recharge capabilities.

Creosote residue

One of the major issues currently under debate between Preserve Our Islands and Glacier Northwest is the construction of a new dock over the old one. The old dock, however, was constructed using creosote to preserve the wooden pilings. Creosote is a type of polycyclic aromatic hydrocarbon, which is detrimental to many types of marine life, and the removal of the old dock might leave some creosote residue behind. Herring eggs, which are often placed on pilings, die if the piling they are on is coated with creosote. It is cancerous to any marine life living near it, and the United States Environmental Protection Agency|EPA declared that any creosote spills over one gallon must be reported.

Salmon and the nearshore area

The well-being of the near-shore area around South Maury Island is another concern. Eelgrass (Zostera marina) is a habitat that protects developing anadromous fish, such as salmon, by providing cover from predation and food, which supports the growth of healthy salmon populations. Eelgrass beds also protect developing species such as herring, which are a food source for juvenile salmon. The construction of the new dock by Glacier Northwest will detrimentally affect eelgrass, disrupting species within the habitat. Docks and their construction affect eelgrass from underwater noise which would disturb fragile species, while creating shade that would threaten eelgrass growth.

Northwestern fence lizard The northwestern fence lizard is a lesser known creature threatened by mining expansion. (Preserve Our Islands). The lizards themselves are far from endangered, even though South Maury Island is one of their only habitats in the Puget Sound area. However, removing these lizards from South Maury Island could be detrimental. The full effects of their absence on the island are unknown, but it is speculated that the insect populations that they feed on could rise without their natural predator, the effects of which could be anywhere from being a nuisance to destroying local flora. Also, Western Fence lizards are thought to diminish the danger of Lyme disease because when the ticks feed on the lizards, the Lyme disease bacteria is killed.

Aquatic reserve

History

On November 21, 2000, Jennifer Belcher, the Washington State Lands Commissioner and a Democrat, declared five controversial areas around the Puget Sound as aquatic reserves."Belcher Specifies Aquatic Reserves." Seattle Post-Intelligencer. Seattle, WA: November 21, 2000. One month later in December 2000, Belcher added Maury Island to the list of aquatic reserves. Many saw this as an attempt to make more obstacles for Glacier Northwest in its goal of obtaining a new dock permit. Subsequently, Glacier Northwest filed a lawsuit against Jennifer Belcher protesting her unilateral decision to establish the aquatic reserves (Gordon 2001). Despite the litigation, the Maury Island Aquatic Reserve was reaffirmed by Belcher's successor Doug Sutherland, a Republican, along with a more specific purpose and protection for the submerged lands in question (Gordon 2004).

Goals of the aquatic reserve

The reserve was designed to “conserve, preserve, restore, and/or enhance” the habitats and species that make up Maury Island (Draft Management Plan 14). Of the four main goals, the first goal is to conserve the native habitats of plants and wildlife species including forage fish, salmonids, and migratory birds. The second goal is to conserve the functions and native processes of the near-shore ecosystem. The third is to maintain the territory, habitats and species through education and providing opportunities for public involvement. The fourth goal is promote responsible management of recreational, commercial and cultural uses of Maury Island that relate to the previous goals. According to the management plan, a reviewed and updated version will be made every ten years for ninety years.

Threatened bird populations

Quartermaster Harbor, which lies between Maury Island and Vashon Island, has been declared by the Audubon Society as an “Important Bird Area” due to its rare intact ecosystem and eelgrass bed habitat (Audubon Society Washington Watchlist Webpage). The beds support herring, which are an important food source for many of the bird species that breed in Quartermaster Harbor (Audubon Society Washington Watchlist Webpage). Several of the species that use the area are either federally listed as being threatened or are strong candidates for state recognition as threatened species. Included on this list are the marbled murrelet, common loon, and Brandt's cormorant (Audubon Society Washingtoto address lifelong maintenance tagsn Watchlist Webpage). In addition, Quartermaster Harbor plays a large role in grebe ecology, with 8-10% of Washington’s total grebe population using it as winter habitat (Holt, A1). Western grebe populations have declined by about 95% since the 1970s, from 120,000 birds to less than 5,000 in the year 2000, making Quartermaster Harbor an important refuge for remaining birds (Holt, A1). Marbled murrelets are also on the decline, having lost nearly 96% of their population to oil spills, loss of habitat, and gill nets (Holt, A1; Audubon Society Marbled Murrelet Webpage).