The Low Impact Development Ordinance, developed by LA Sanitation seeks to ensure development projects utilize various rainwater capturing strategies to prevent runoff water. It was implemented to help combat stormwater pollution, an environmental hazard that is created when excess water causes draining systems to flood and overflow, releasing contaminated water into the environment.
Stormwater pollution is especially dangerous because of the toxic and bioactive content of storm drains, which includes heavy metals, bacteria, trash and debris, oil, grease, sediment and many other dangers to the ecosystem.
If these hazardous materials spill out from the drains, the flow of water may carry them into surrounding soil, residential areas, rivers, lakes, and other inhabited environments.
To comply with the sanitation ordinance and help protect public health and the ecosystem, architects, investors and developers must employ a series of design approaches and best management practices, known as BMPs, and actively seek to prevent runoff rainwater.
In essence, LID ordinance requires that a property with an area greater than 500 square feet of solid landscape – hardscape, prevents runoff, or in terms of volume, captures three quarters of an inch of rainwater during a rain episode. This is performed best by reducing the surface area that can cause runoff, and utilizing natural systems of capture and exploitation of the rainwater, as detailed below.
LID Strategies revolve around manipulating the flow of water and enhancing existing infiltration areas such as areas of soil, vegetation, porous construction material, or adding mechanisms to collect the rainwater in appropriate containers. Some of these strategies include:
It’s important to have a professional assessment of the soil to determine its characteristics – infiltration rate, porous space, density, and layer composition. Local climate properties need to be studied as well, notably temperatures, humidity, and rainfall trends.
With this in mind, calculations can be made to project the effectiveness of soil retention, and if necessary, improvement can be done:
One of the key goals when implementing LID Sanitation should be to effortlessly use the rainwater as a resource for the property. Green infrastructure helps accomplish this through sustainable and affordable methods:
Complying with LID ordinance in Los Angeles will require that you develop suitable solutions that meet government standards. LID practices are simple in theory, but require professional assessment of your project design or existing lot area.
In ideal circumstances, LID practices combine sustainable design with modern, practical architecture, and create solutions that not only comply with industry standards, but add greater value to the whole area. A lot of attention to detail needs to go into implementing these solutions, and we recommend working only with licensed professionals in Los Angeles.
Yakov Build general contractors have accumulated vast experience with LID projects in Los Angeles, and our company serves projects with the best practices, materials, and finest professionals in the field.
If you would like to contact us with your questions or projects, visit the contact us page for more details, or call us directly. We are eager to work on new projects for a safer, more environmentally friendly Los Angeles.