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Galveston County(3 more)
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| Field | Local Galveston County Galveston County Public Works Department, 722 Moody Ave., Galveston, TX 77550 (Engineering Division) |
|---|---|
| Permit | |
| Permit / Authorization | Galveston County Drainage / Infrastructure Permit |
| Submit To | Galveston County Public Works Department, 722 Moody Ave., Galveston, TX 77550 (Engineering Division) |
| Lead Time | 4–8 weeks for standard projects; coastal zone or floodplain projects may require additional TCEQ, GLO, or USACE review time of 60–120 days |
| Application Method | Submit application to Galveston County Public Works / Engineering. Applications must include drainage plan, hydrologic/hydraulic study, and erosion control plan signed and sealed by a licensed Texas PE. Projects in the coastal zone also require review under the Texas Coastal Management Program (CMP) administered by the Texas General Land Office (GLO). |
| Fee | Contact agency for current fee schedule |
| Water Quality | |
| Impervious Cover Limit | No countywide blanket impervious cover cap for unincorporated areas. TCEQ and GLO Coastal Management Program may impose additional limits in the Critical Dune Area and Coastal Hazard Area. Incorporated cities enforce their own standards. |
| On-Site Treatment Required | No |
| Detention Required | Yes — Post-development peak discharge must not exceed pre-development peak discharge for the 2-, 10-, 25-, and 100-year storm events per the Galveston County Drainage Criteria Manual. Post-Hurricane Ike (2008) updates introduced elevated design standards including higher freeboard requirements and storm surge overlay considerations. In low-lying coastal areas, pump stations may be required and must be designed for the 100-year storm event. |
| Turbidity / Discharge Standard | No separate county numeric turbidity standard. TPDES Construction General Permit (TXR150000) effluent limits apply. Projects near Galveston Bay must also comply with TCEQ water quality standards for receiving water bodies (Galveston Bay is a nutrient-sensitive water body). |
| SWPPP | |
| SWPPP / Local Plan Required | No local plan |
| PE Stamp Required | No |
| Inspections | |
| Inspection Requirements | Galveston County Public Works / Engineering performs construction-phase inspections and a final acceptance inspection for permitted drainage facilities. Projects involving tidal outfalls or work in Galveston Bay are subject to concurrent inspection by USACE and TCEQ. Texas GLO may inspect projects in the coastal zone. Contractor must provide advance notice (minimum 48 hours) for county inspections. |
| Inspector Qualification | County inspections performed by county engineering staff. As-built surveys must be sealed by a licensed Texas RPLS. A licensed coastal engineer (PE with coastal specialty) is recommended for projects in FEMA V-Zones or within 1,000 ft of mean high tide. |
| Design & Zones | |
| Local Design Manual | Galveston County Drainage Criteria Manual (Post-Ike Edition) |
| Special Overlay Zones | FEMA Coastal High Hazard Area — V-Zone (VE), Texas Critical Dune Area and Coastal Hazard Area, Galveston Bay Estuarine System / Wetlands Buffer, Harris-Galveston Coastal Subsidence District (HGCSD) |