Mammoth Yosemite Airport

Facility Overview

Mammoth Yosemite Airport is operating under a active permit of type: Industrial. Primary industry: Air Transportation, Scheduled. Secondary industry: Air Transportation, Nonscheduled. Tertiary industry: Air Courier Services.

The facility covers a total area of 223 Acres, with an active operational area of 223 Acres.

The site has self-reported imperviousness of %. In the context of the Industrial General Permit for stormwater runoff, imperviousness refers to the percentage of the facility's surface area that doesn't allow water to penetrate, such as concrete, asphalt, or rooftops. The higher the imperviousness percentage, the more potential impact on local water quality as there is a greater surface area to accumulate pollutants.

In terms of water impact, the facility directly affects the Crowley Lake and the downstream waters. This information is crucial for understanding the facility's potential environmental influence on local water resources.

437 Old Mammoth Rd STE R, Mammoth Lakes, CA 93546

Additional Details

Permit Status: Active
County: Mono
WDID: 6B26I003680
Application ID: 204376

The information displayed on the map and this report is derived from publicly available data, including reports submitted through the California State Water Resources Control Board's SMARTS database, and is provided for informational purposes only. Blanks or missing data reflects a lack of data provided by the facility or improperly uploaded data. Facilities identified on this map as having exceedances, missing reports, or other potential issues are flagged as suspected of non-compliance only. A flag on this map does not mean a facility has been found, or is, in violation of the IGP or any other law.

Most IGP facilities are required to collect storm water samples four times per year during qualifying storm events. Where fewer than four samples are shown below, the facility may not be meeting this requirement. When a facility fails to sample at the required frequency, or samples outside of qualifying events, the resulting data may not accurately reflect its actual discharges to receiving waters. As a result, missing or incomplete sampling data can make a facility's reports appear to show less environmental impact than is actually occurring.

Discharge Reports Summary

YearSample ReportsExceedancesStatus
000Up To Date