Facility Overview
Calaveras County Airport is operating under a active permit of type: Industrial. Primary industry: Airports, Flying Fields, and Airport Terminal Services.
The site has self-reported imperviousness of 90%. 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, this facility indirectly affects the San Antonio Creek. This information is crucial for understanding the facility's potential environmental influence on local water resources.
Additional Details
Historical Exceedances
This facility has historically exceeded limits for the following parameters:
pH
pH levels outside the normal range can harm aquatic life and affect water chemistry. Acidic water can leach toxic metals from sediments, while alkaline water can increase ammonia toxicity.
These limits reflect Water Quality Standards promulgated to protect human health or the environment, or standards that the State or EPA developed to indicate the Facility may be failing to implement best practices to protect storm water.
Discharge Reports Summary
| Year | Sample Reports | Exceedances | Status |
|---|---|---|---|
| 2024 | 2 | 1 | Exceedances Detected |
| 2023 | 2 | 0 | Up To Date |
| 2022 | 2 | 0 | Up To Date |
| 2021 | 2 | 0 | Up To Date |
| 2020 | 2 | 0 | Up To Date |
| 2019 | 4 | 0 | Up To Date |
| 2018 | 4 | 0 | Up To Date |
| 2017 | 3 | 0 | Up To Date |
| 2016 | 1 | 0 | Up To Date |
Discharge Report Exceedances Trend
This chart shows the trend of discharge report exceedances over time. The values represent the number of exceedances for each year.