Most Storm Drain Systems have planning and zoning implications and, accordingly at the beginning stage, you must obtain
approval from the Department of Regional Planning for your proposed land use before you can commence the construction
of the storm drain. To learn more about the planning stage process with the County of Los Angeles Department of Regional
STORM DRAIN PLAN PREPARATION
TYPICAL STORM DRAIN PLAN
Below are some tips and tools to help in preparing the storm drain plan.
- Please note, storm drain plans can only be prepared by a California Registered Civil Engineers
- The first sheet of the storm drain plans must include the following:
- General notes
- Scaled drawings: use engineering scale (1"=40' or larger) and provide graphical scale
- Sheet size: typical sizes are 24" x 36" and 36" x 48". Please note that this is ultimately for hard copies only but
gives guidance in indexing the sheets for digital use as well.
- Vicinity map: show the nearest major cross streets and Thomas Guide page and grid numbers
- Statements: add only the applicable statements to the plan
- Title blocks for: civil engineer, geotechnical consultant, surveyor, owner / developer, etc.
Below are links to useful references if you have detailed questions regarding
Storm Drain System.
STORM DRAIN PLAN SUBMITTAL
In order to properly process your submittal and to facilitate your plan review, please submit all of the applicable
items below. It is our policy to review only completed submittals. Submittals that are not complete or do not contain
the necessary references, documents, or supporting calculations may be delayed or rejected. All documents should be
submitted electronically, using PDF form, to
https://epicla.lacounty.gov/SelfService/#/home. If you have already formally submitted a plan check package in
the past and you wish to upload revised documents, you must resubmit to e-reviews under the existing plan case. For
questions regarding this checklist, please contact the appropriate plan checking unit at (626) 458-4921.
To submit your storm drain plan for review, upload your plans and supporting information online (link below).
Submit my plans
You can pay the plan check review fees in person or online using e-check / credit card (for charges less than $50,000.00).
After you have submitted your plans for review, your plan checker will create a fee invoice where you can pay the fee
For your convenience, our fee schedule and cost and bond estimating spreadsheets are available below. Please note
that the plan check fee covers up to 5 reviews of the storm drain plan submittal. Additional fees will be required
after the 5th submittal.
We've been processing paperless plan review since 2013! Accordingly, you can submit all of your improvement plans
and supporting documents online at the link provided above. To see a typical list of all supporting documents that
are required for obtaining storm drain plan approval, here is a
Storm Drain Submittal Check List
At a minimum, we require the items listed below to begin reviewing your storm drain plans:
- Storm Drain plan
- Plan check fee (see above)
- Approved planning documents
- Approved hydrology study
Resubmittals will be required to address any corrections needed on the storm drain plan.
STORM DRAIN PLAN REVIEW & APPROVAL
For each plan submittal, a check print showing plan check comments and a corrections list will be generated and sent
to the applicant who submitted the plans. These documents will address deficiencies in the plan and inform you of supporting
documents that are needed in order to obtain storm drain plan approval. The following are links to resubmit your plans
and to some documents that you should find useful during the storm drain plan review:
Resubmit my plans
Before your storm drain plan can be approved you will need to approach various jurisdictional agencies for their approval
of a permit or letter stating they have no jurisdiction over your project. Below are links for some of those agencies.
STORM DRAIN PLAN APPROVAL AND CONNECTION AND/OR INSPECTION PERMIT
As soon as your drainage plan is approved, the storm drain plan checker will create an approval package for your project.
The approval package will contain versions of your plans with County stamp and signature as well as all supporting
documents for the storm drain plan. The approval package will be uploaded as a public document in the EPICLA system
and you need to apply for and obtain the connection and/or inspection permit.
WHAT HAPPENS AFTER STORM DRAIN PLAN APPROVAL?
Once the Storm Drain Plan is approved and the Permit Section of LDD permit is issued, you must continue processing
improvement plans until you obtain all plan approvals and the necessary permits to finish constructing your project.
After 2 years from the date that the storm drain plan is approved, unless the subdivision map expires, the approval
expires. If your storm drain plan expires before you pull the connection and/or inspection permit, you'll need to submit
a new storm drain plan with supporting documents for review and approval. If your storm plan was approved in 2014 or
after, we will have all of the supporting documents stored digitally. However, some approvals by other agencies may
be expired and would need to be renewed.
As construction progresses, site conditions may warrant design changes to the approved storm drain plans. It is the
responsibility of the permittee to inform the Drainage Section storm drain plan check engineer of these changes and
provide revised storm drain plans for approval prior to proceeding with the changes. If you need to submit revised
storm drain plans for review and approval, click below.
Submit revised plans
Finally, with an approved storm drain plan, you're closer to recording your final map. Most, if not all, storm drain
clearance items for the final map are usually handled during the storm drain plan review process. Storm Drain final
map clearance will be issued after completing all final map requirements for storm drain, either with or after the
storm drain plan approval.
If you have additional questions or concerns, please contact our Drainage and Division Operation Section at (626) 458-4921.
To discuss your project with us in person, please make an appointment with us to meet at our public counter between
the hours of 7:00 am and 5:00 pm, M-Th at the address below:
County of Los Angeles Department of Public Works
3rd Floor, Land Development Division
900 South Fremont Avenue
Alhambra, CA 91803