San Angelo, TX Environmental Rules: Erosion Control (2026)

Division 4 of the city's stormwater article, Sec. 054, sets the operative rules. Sec. 041(b) bars any discharge into the municipal separate storm sewer system (MS4) of sediment, silt, earth or other construction material that could instead be captured on site with erosion controls. Sec. 042 requires every operator, regardless of size or TPDES-permit status, to use best management practices: preserving existing vegetation, stabilizing disturbed ground as soon as work stops there, diverting flow from exposed soil, minimizing off-site sediment tracking by vehicles, containing building-material and chemical spills, and covering waste receptacles, including roll-off containers that cannot otherwise be covered.

Sites disturbing one acre or more, or part of a larger common plan of development disturbing an acre, must obtain TPDES general construction permit coverage, post a signed construction site notice on site, and prepare a stormwater pollution prevention plan (SWPPP) under Sec. 048 and Sec. 050. Qualified personnel must inspect the site, and any failure or discharge identified must be remedied within 24 hours under Sec. 045(b). Once the site is stabilized, temporary controls must be removed, and for subdivisions the developer keeps maintaining them until 70 percent native vegetative cover is established on unsold lots, under Sec.

051(b). The stormwater administrator enforces the article: Sec. 019 allows a voluntary-compliance instruction before formal action, Sec. 020 requires written notice of violation by certified mail with a right to appeal to the city engineer within three business days, and Sec. 052(d) lets the administrator issue a stop-work order if a SWPPP is not being implemented. Unresolved violations can trigger city abatement, with costs and a lien filed against the property under Sec. 025, appealable to the city manager within ten business days.