Industrial Facility: Pulltarps Manufacturing, El Cajon, CA

Whitson CM’s most recent industrial BMP installation occurred at Pulltarps Manufacturing in El Cajon, California. Two of the site’s sample locations are located at the site entrance and exit. During a rain event, stormwater discharges from the site via sheet flow. In order to capture and filter the stormwater, trench drains have been installed at the bottom of the driveways. The trench drains are now fitted with LIDMIX filter media. LIDMIX is a specialized media contained within a permeable geotextile fabric that allows stormwater to flow through the system at a rapid rate while the particulate and soluble forms of the pollutants are filtered out of the runoff. Future samples at the facility will be taken at the outlet of the trench drains after stormwater passes through the high-flow media.

Note: LIDMIX media is locally distributed by California Filtration Specialists. Please visit www.cafiltrationspecialists.com or call 858-705-6483 for more information.

Industrial Facility: San Diego Metropolitan Transit System, San Diego, CA

Whitson CM and California Filtration Specialists are currently working with the San Diego Metropolitan Transit System. In the upcoming months, MTS will be implementing BMPs at two of their maintenance facilities. The filtration design at one of its downtown facilities includes retrofitting twenty-three catch basin inlets. Each catch basin will be fitted with an insert to hold LIDMIX filter mats. Each insert will include a sampling tub to capture filtered stormwater discharges that pass through the LIDMIX mats. The filtration design at one of MTS’s bus maintenance yards includes manufacturing a plastic deck that will be side-mounted within an outlet. The plastic deck will be cut to fit six FABCO cartridges and the cartridges will be customized with LIDMIX media. WCM will continue to provide updates on the BMP installation process at this facility.

Note: FABCO cartridges and LIDMIX media are locally distributed by California Filtration Specialists. Please visit www.cafiltrationspecialists.com or call 858-705-6483 for more information.