Engineering Letter of Certification Process

Step 1: Applicant submits the following items via the Permitting Portal.

• Completed and signed Application for Letter of Certification
• Completed and signed Checklist for Master Plan or Preliminary Plat or Final Plat Letter of Certification
• Master Drainage Plan Report per requirements outlined in the Drainage and Erosion Control Design Manual (DCM) Section 2.1.5 or Preliminary Drainage Report per requirements outlined in the DCM 2.1.4 or Letter of No Change in Drainage* 
• Preliminary Street and Utility Drawings (only required for Preliminary Plat and Final Plat LOCs)
• Master Plan Exhibit or Preliminary Plat Exhibit or Final Plat Exhibit
• Approved Traffic Impact Analysis Determination Letter (see Traffic Impact Analysis Process)
• TIA worksheet and/or TIA report as outlined in Traffic Impact Analysis Process
• Stormwater Connection Eligibility Approval if applicable (see Stormwater Connection Fee Process)
• TxDOT approval of TIA if applicable.

Note: documents in excess of 30MB will need to be reduced prior to upload.

*Letter of No Change in Drainage applicable for plats with no intended development at this time

Step 2: Staff conducts a completeness review, fees are attributed to the LOC and are due via the Permitting Portal prior to staff review. Once payment is made, notice to staff is required.

Step 3: Staff reviews and returns LOC or request for information (RFI) to applicant. If approved, the LOC shall be included in the plat or master plan submittal. If comments are provided, corrected documents and letter of response should be uploaded via the Permitting Portal. Email Staff Contact to begin additional review after all revised documents have been uploaded.

Engineering LOC Related Documents

Application - Public Works Letter of Certification

Checklist - Preliminary Plat LOC

TIA Worksheet & Report Checklist