Cnty Quarry Prod

Facility Overview

Cnty Quarry Prod is operating under a active permit of type: Industrial. Primary industry: Crushed and Broken Stone, NEC. Secondary industry: Asphalt Paving Mixtures and Blocks.

The facility covers a total area of 7 Acres, with an active operational area of 600000 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 indirectly affects the Grayson Creek. This information is crucial for understanding the facility's potential environmental influence on local water resources.

5501 Imhoff Dr, Martinez, CA 94553

Additional Details

Permit Status: Active
County: Contra Costa
WDID: 2 07I013597
Application ID: 181902

Historical Exceedances

This facility has historically exceeded limits for the following parameters:

  • Total Suspended Solids (TSS)

    High levels of suspended solids can reduce water clarity, harm fish gills, smother aquatic habitat and eggs, and transport pollutants through water bodies.

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

YearSample ReportsExceedancesStatus
202430Up To Date
202331Exceedances Detected
202220Up To Date
202110Up To Date
202010Up To Date
201921Exceedances Detected
201821Exceedances Detected
201751Exceedances Detected
201642Exceedances Detected

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.