Overview
MERRI MART NO. 20 is a stormwater outfall located in Mobile, Alabama, United States. It operates under the US EPA NPDES MS4 permit framework for stormwater management.
MERRI MART NO. 20 is a stormwater outfall located at 2258 Airport Blvd in Mobile, Alabama, United States. As a stormwater outfall, it serves as a discharge point for stormwater runoff from the surrounding urban catchment, which includes commercial and residential areas. The facility is operational and falls under the regulatory oversight of the US EPA's National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) program. In Alabama, stormwater outfalls like MERRI MART NO. 20 are subject to Phase II MS4 requirements, which mandate the development of stormwater management programs to reduce pollutant discharges to the maximum extent practicable. The Mobile area, with its proximity to the Gulf Coast, experiences significant rainfall, making effective stormwater management critical for flood control and water quality protection. The facility's location in a commercial corridor suggests that runoff may contain typical urban pollutants such as sediments, nutrients, and hydrocarbons. The environmental significance of this outfall lies in its potential discharge to local water bodies, including those that may be impaired or sensitive. Proper operation and maintenance of the outfall help mitigate the impact of urban runoff on downstream ecosystems, including Mobile Bay and the Gulf of Mexico. The facility's role in the community is to convey stormwater safely away from developed areas while complying with regulatory requirements to protect water quality.
Environmental context
Mobile, Alabama, is located on the Gulf Coast and experiences a humid subtropical climate with high annual rainfall, often exceeding 60 inches per year. This precipitation generates substantial stormwater runoff, which can carry pollutants from urban surfaces into local waterways. The area's drainage systems ultimately discharge into Mobile Bay, an ecologically important estuary that supports fisheries, wildlife, and recreation. Stormwater outfalls like MERRI MART NO. 20 must be managed to minimize the transport of sediments, nutrients, and other contaminants to protect water quality and aquatic habitats.
Frequently asked questions
MERRI MART NO. 20 is located at 2258 Airport Blvd in Mobile, Alabama, United States.
MERRI MART NO. 20 is a stormwater outfall, which is a discharge point for stormwater runoff from urban areas.
Stormwater outfalls in Mobile are regulated under the US EPA's NPDES MS4 program, which requires permits and stormwater management plans to control pollutant discharges.
Mobile's high rainfall and proximity to Mobile Bay make stormwater management critical to prevent flooding and protect water quality in the estuary.
Urban stormwater runoff often contains sediments, nutrients, heavy metals, oil and grease, and pathogens from roads, parking lots, and lawns.
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