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TX(1 more)

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Galveston County(2 more)

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Field	State Texas TCEQ	Local Galveston County Galveston County Public Works Department, 722 Moody Ave., Galveston, TX 77550 (Engineering Division)
Permit
Permit / Authorization	Construction General Permit (TXR150000)	Galveston County Drainage / Infrastructure Permit
Submit To	TCEQ	Galveston County Public Works Department, 722 Moody Ave., Galveston, TX 77550 (Engineering Division)
Lead Time	Must file NOI and receive authorization before construction begins	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	Online via TCEQ Water Quality ePay system	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	$325 for projects disturbing < 5 acres; $525 for ≥ 5 acres	Contact agency for current fee schedule
Water Quality
Impervious Cover Limit	No statewide 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	Not specified at state level	No
Detention Required	Not specified at state level	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	Not specified in CGP; discharges must not cause or contribute to violations of water quality standards	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	Yes	No local plan
PE Stamp Required	No	No
Inspections
Inspection Requirements	Every 14 days and within 24 hours of a rainfall event producing ≥ 0.5 inches	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	Stormwater Pollution Prevention Plan (SWPPP) Inspector — no state license required but must be knowledgeable	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	N/A — state level	Galveston County Drainage Criteria Manual (Post-Ike Edition)
Special Overlay Zones	N/A — see local jurisdictions	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)

Field	State Texas TCEQ	Local Galveston County Galveston County Public Works Department, 722 Moody Ave., Galveston, TX 77550 (Engineering Division)
Permit
Permit / Authorization	Construction General Permit (TXR150000)	Galveston County Drainage / Infrastructure Permit
Submit To	TCEQ	Galveston County Public Works Department, 722 Moody Ave., Galveston, TX 77550 (Engineering Division)
Lead Time	Must file NOI and receive authorization before construction begins	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	Online via TCEQ Water Quality ePay system	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	$325 for projects disturbing < 5 acres; $525 for ≥ 5 acres	Contact agency for current fee schedule
Water Quality
Impervious Cover Limit	No statewide 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	Not specified at state level	No
Detention Required	Not specified at state level	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	Not specified in CGP; discharges must not cause or contribute to violations of water quality standards	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	Yes	No local plan
PE Stamp Required	No	No
Inspections
Inspection Requirements	Every 14 days and within 24 hours of a rainfall event producing ≥ 0.5 inches	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	Stormwater Pollution Prevention Plan (SWPPP) Inspector — no state license required but must be knowledgeable	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	N/A — state level	Galveston County Drainage Criteria Manual (Post-Ike Edition)
Special Overlay Zones	N/A — see local jurisdictions	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)

Field

State

Texas

TCEQ

Local

Galveston County

Galveston County Public Works Department, 722 Moody Ave., Galveston, TX 77550 (Engineering Division)

Permit

Permit / Authorization

Construction General Permit (TXR150000)

Galveston County Drainage / Infrastructure Permit

Submit To

TCEQ

Galveston County Public Works Department, 722 Moody Ave., Galveston, TX 77550 (Engineering Division)

Lead Time

Must file NOI and receive authorization before construction begins

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

Online via TCEQ Water Quality ePay system

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

$325 for projects disturbing < 5 acres; $525 for ≥ 5 acres

Contact agency for current fee schedule

Water Quality

Impervious Cover Limit

No statewide 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

Not specified at state level

Detention Required

Not specified at state level

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

Not specified in CGP; discharges must not cause or contribute to violations of water quality standards

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

Yes

No local plan

PE Stamp Required

Inspections

Inspection Requirements

Every 14 days and within 24 hours of a rainfall event producing ≥ 0.5 inches

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

Stormwater Pollution Prevention Plan (SWPPP) Inspector — no state license required but must be knowledgeable

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

N/A — state level

Galveston County Drainage Criteria Manual (Post-Ike Edition)

Special Overlay Zones

N/A — see local jurisdictions

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)