Twin Sisters Mine

Facility Overview

Twin Sisters Mine is operating under a active permit of type: Industrial. Primary industry: Gold Ores.

The facility covers a total area of 16000 SqFt, with an active operational area of 16000 Sqft.

The site has self-reported imperviousness of 0%. 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 directly affects the Middle Yuba River. This information is crucial for understanding the facility's potential environmental influence on local water resources.

SEC 13 CA T18N R10E MDM, Nevada City, CA 99503

Additional Details

Permit Status: Active
County: Nevada
WDID: 5S29I029764
Application ID: 549703

Discharge Reports Summary

YearSample ReportsExceedancesStatus
000Up 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.