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Guidance for meeting temperature TMDL MS4 permit requirements

{{alert|This page will be developed in August/September, 2019|alert-under-construction}}

==DRAFT Temperature TMDL WLA Guidance (MS4 General Permit Section 22)==

===Total Maximum Daily Loads (TMDLs)===
Currently there are two approved TMDLs for Brown’s Creek and Miller Creek that include MS4 WLAs for thermal loading. Brown’s Creek is impaired for aquatic life due to a lack of cold water fish assemblage. Miller Creek is impaired for aquatic life due to a lack of cold water fish assemblage and elevated water temperature.

===Requirement (Permit Section 22.7)===
If the permittee has an applicable WLA for temperature that includes a reduction greater than zero percent, the permittee must maintain a written plan that identifies specific activities the permittee will implement to reduce thermal loading during the permit term (Table 1). The written plan may include, but is not limited to: 
*a. implementation of infiltration BMPs such as bioinfiltration practices; 
*b. disconnection and/or reduction of impervious surfaces; 
*c. retrofitting existing structural stormwater BMPs; and 
*d. improvement of riparian vegetation.

{{:MS4s with applicable temperature WLAs}}