337-13. Requirement to Prevent. Control, and Reduce Stormwater Pollutants.
(a) Authorization to Adopt and Impose Best Management Practices. The County may adopt requirements identifying BMPs for any activity, operation, or facility which may cause or contribute to pollution or contamination of stormwater, the storm drain system or waters of the U.S. Where BMP requirements are promulgated by the County or any federal, state or regional agency for any activity, operation or facility which would otherwise cause the discharge of pollutants to the storm drain system or waters of the U.S., every responsible party undertaking such activity or operation, or owning or operating such facility, shall comply with such requirements. (Ord. 2532, § 1, 5/26/2015)
(b) Post-Construction Measures. Development projects shall comply with the post-construction requirements of the MS4 General Permit, which may include measures for site design, source control, runoff reduction, stormwater treatment, or baseline hydromodification management as applicable based on project type and size. The County’s procedures, standards and specifications for implementing the post-construction requirements of the MS4 General Permit are contained in the Humboldt Stormwater Low Impact Development Manual. The County shall incorporate post-construction requirements, as applicable, in any land use entitlement and construction or building-related permit to be issued relative to such development. The responsible party and developer shall comply with the terms, provisions, and conditions of such land use entitlements and permits. The Humboldt Stormwater Low Impact Development Manual can be obtained at the Humboldt County Public Works or Planning and Building Departments. (Ord. 2532, § 1, 5/26/2015)
(c) Responsibility to Implement BMPs. Notwithstanding the presence or absence of requirements promulgated pursuant to this Section, any responsible party engaged in activities or operations, or owning facilities or property, which will or may result in pollutants entering stormwater, the storm drain system or waters of the U.S. shall implement BMPs to the maximum extent practicable to prevent and reduce the pollutants. The responsible party or operator of a commercial or industrial establishment shall provide reasonable protection from accidental discharge of prohibited materials or other wastes into the storm drain system or watercourses. Facilities to prevent accidental discharge of prohibited materials or other wastes shall be provided and maintained at the responsible party or operator’s expense. Any responsible party performing construction and grading work shall implement BMPs to prevent the discharge of construction waste, debris, or contaminants from construction materials, tools and equipment from entering the storm drainage system. BMPs for each project, shall include, but not be limited to the use of the following: (Ord. 2532, § 1, 05/26/2015)
(1) Scheduling construction activity;
(2) Preservation of natural features, vegetation, and soil;
(3) Drainage swales or lined ditches to control stormwater flow;
(4) Mulching or hydroseeding to stabilize disturbed soils;
(5) Erosion control to protect slopes;
(6) Protection of storm drain inlets (gravel bags or catch basin inserts);
(7) Perimeter sediment control (perimeter silt fence, fiber rolls);
(8) Sediment trap or sediment basin to retain sediment on site;
(9) Stabilized construction exits;
(10) Wind erosion control;
(11) Other soil loss BMPs acceptable to the enforcing agency;
(12) Material handling and waste management;
(13) Building materials;
(14) Management of washout areas (concrete, paints, stucco, etc.);
(15) Control of vehicle and/or equipment fueling to contractor’s staging area;
(16) Vehicle and equipment cleaning performed off site;
(17) Spill prevention and control;
(18) Other housekeeping BMPs acceptable to the enforcing agency.
(d) BMP Standards. Best Management Practices required by the County shall be consistent with the California Stormwater Quality Association Best Management Practice Handbooks or equivalent. (Ord. 2532, § 1, 5/26/2015)