Stormwater Compliance Resource Library

TCEQ Water Quality General Permits Search (TXR04 / TXRMW authorization registry) TCEQ

The state's own authorization database — the citable source for whether a jurisdiction holds an MS4 authorization, including verbatim no-permits-found results for negative findings. Statuses are point-in-time: every claim citing this source carries its retrieval date and is re-checked annually.

Stormwater Discharges from Construction Activities (NPDES) EPA

EPA's federal construction stormwater hub. Use it for national NPDES framing and background, not for Texas-specific thresholds (TXR150000 governs those in Texas).

TPDES Construction General Permit TXR150000 (2023) TCEQ

The core Texas construction stormwater permit. Cite it for the one-acre coverage threshold, the inspection cadence (every 14 calendar days and within 24 hours of a 0.5-inch storm), and the 70% final-stabilization rule. Current cycle runs March 5, 2023 through March 5, 2028.

TPDES General Permit TXR040000 (Small MS4) TCEQ

The Phase II Small MS4 general permit. Reference it when a page explains a city's MS4 obligations or why a local stormwater ordinance exists.

Stormwater Best Management Practice: Check Dams (EPA fact sheet) EPA

EPA's check dam BMP fact sheet (2021). Cite for national check-dam practice: concentrated-flow siting, series spacing (downstream crest = upstream toe), and the warning against straw bales or silt fence in concentrated flow. Carries the national 'check dam' phrasing the Rock Filter Dams page must cover.

Stormwater Best Management Practice: Concrete Washout (EPA fact sheet) EPA

EPA's concrete washout BMP fact sheet. Cite for washout design and operation: 50-ft setback from storm drains/ditches/waterbodies, daily + post-rain inspection, cleanout at over 75% capacity, signage, and pit vs. prefab-bin types.

Stormwater Best Management Practice: Fiber Rolls (EPA fact sheet) EPA

EPA's fiber rolls BMP fact sheet (2021). Cite for the fiber roll / fiber log / straw wattle definition, slope application (slow-filter-spread overland flow), and the caution against channel use. Carries the national 'fiber rolls' phrasing the Sediment Logs page must cover.

Stormwater Best Management Practice: Permanent Seeding (EPA fact sheet) EPA

EPA's permanent seeding BMP fact sheet (EPA-832-F-21-028, December 2021). Cite for seeding as perennial vegetative cover, mulch protection during seedling establishment, and the seeding-does-not-immediately-stabilize caution that motivates blankets and temporary controls.

Stormwater Best Management Practice: Riprap (EPA fact sheet) EPA

EPA construction-menu riprap sheet - THE outlet-protection anchor (no standalone outlet sheet in the 2021 series). PDF cached at _source_cache/epa_bmp-riprap.pdf. Cite for riprap at culvert/storm-drain inlets and outlets, energy dissipation, velocity reduction. Also strengthens E3e.

Stormwater Best Management Practice: Sodding (EPA fact sheet) EPA

EPA's sodding BMP fact sheet (2021). Cite for sodding as a permanent erosion control practice, immediate vegetative cover where seeding is not an option, and install-within-36-hours-of-harvest handling guidance.

TxDOT Standard Specifications (Item 506 - Temporary Erosion, Sedimentation, and Environmental Controls) TxDOT

TxDOT's construction specifications, including Item 506 (temporary erosion, sedimentation, and environmental controls). Cite for TxDOT-spec BMP language on roadway-adjacent work.

TxDOT Standard Specifications Item 506 - Temporary Erosion, Sedimentation, and Environmental Controls (2024) TxDOT

TxDOT's current (2024) Item 506 specification - Temporary Sediment Control Fence (net-reinforced woven geotextile fabric, posts, wire, trenched toe), construction exits, and vertical tracking control. Cite it for TxDOT-project silt fence requirements; note logos visible to the traveling public are not allowed on TxDOT jobs. Supersedes the 2014 edition; the cited requirements are textually identical across the two editions.

U.S. Census Bureau 2024 Gazetteer - Texas Places U.S. Census Bureau

Authoritative list of incorporated Texas places; used to establish whether a named community is a municipality at all (Gordonville is absent = unincorporated).

iSWM Criteria Manual for Site Development and Construction NCTCOG

North Texas's regional stormwater design standard, adopted in whole or part by many DFW cities. Cite it for regional site-development and water-quality criteria.

Celina Certified iSWM Gold (NCTCOG announcement) NCTCOG · Celina

NCTCOG's own announcement that Celina earned the first-ever Gold iSWM designation (Spring 2021). The primary anchor for any iSWM Gold claim.

iSWM Construction Control Standard Details (2018) NCTCOG

NCTCOG's iSWM standard construction-control detail drawings. Figure 3.28 is the silt fence detail (24-inch min height, steel posts at 6-ft max spacing, 1-ft embedment, wire backing). Cite for regional BMP install geometry.

iSWM Technical Manual - Construction Controls NCTCOG

The construction-controls module of iSWM, with BMP selection guidance and standard details. Reference it for regional erosion- and sediment-control practice and detail drawings.

City of Van Alstyne - Engineering Services City of Van Alstyne

City engineering scope (roadways, drainage, water, wastewater). No MS4/SWPPP program content — the basis for the non-MS4 page's 'what the city does review' section.

Grayson County Flood Damage Prevention Order (2022-08-02) Grayson County

County floodplain layer applying to construction in the unincorporated county.

Grayson County Subdivision Regulations (rev. 11-19-2024) Grayson County

County land-use layer: required plat language disclaiming county responsibility for drainage maintenance and erosion control. No SWPPP/TPDES construction requirements in the 69-page document.

STEERS - State of Texas Environmental Electronic Reporting System TCEQ

TCEQ's electronic filing system for the NOI, NOC, and NOT. Link it wherever a page walks an operator through filing construction stormwater paperwork.

Tarrant Regional Water District - Permits & General Ordinance TRWD

Tarrant Regional Water District permitting and ordinance information (permits under Resources). Relevant for work near TRWD facilities, floodways, or the Trinity corridor.

City of Celina Code of Ordinances - Article 3.12 Erosion Control City of Celina · Celina

Celina's erosion control article. Cite for the 0.1-acre earthwork permit threshold, the erosion-control-plan requirement for any land-disturbing activity, and the tiered SWPPP path (CSN at 1-5 acres; NOI with TCEQ payment proof at 5+ acres; NOT at completion). Link-health note: ecode360 returns 403 to automated fetchers (bot-block, not link death) - sweeps must browser-verify before marking DEAD.

City of Celina Stormwater Management Plan 2024-2029 City of Celina · Celina

Celina's TCEQ-permitted MS4 Stormwater Management Plan for the 2024-2029 cycle. Cite for the city's MS4 posture and program commitments.

Allen Land Development Code, Sec. 7.06 - Tree preservation (Municode) City of Allen · Collin/Allen

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

Allen Land Development Code, Sec. 8.04 - Permits required (Municode) City of Allen · Collin/Allen

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

City of Allen - Land Development (Engineering & Traffic) City of Allen · Collin/Allen

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

City of Allen - Stormwater Management (Engineering & Traffic) City of Allen · Collin/Allen

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

City of Allen Stormwater Management Program 2025-2029 (April 2025; TXR040092 Permit Term IV) City of Allen · Collin/Allen

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

City of Melissa Development Permit Application (revised 2025-12-03) City of Melissa · Collin/Melissa

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

City of Melissa Stormwater Management Plan, August 2024 to August 2029 City of Melissa · Collin/Melissa

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

Melissa Code of Ordinances, Article 11.2000 - Municipal Separate Storm Sewer System Regulations (Municode) City of Melissa · Collin/Melissa

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

City of Dallas - Trinity Watershed Management: Construction (stormwater) City of Dallas · Dallas

All-construction-regardless-of-size Sec.19-118 hook + TPDES layering. Site rejects WebFetch (TLS) - BROWSER-VERIFY on sweeps (verified via browser 2026-07-15). Page carries stale 2023 CGP-renewal notices - do not cite those.

Richardson Code of Ordinances Chapter 22.5 - TREE PROTECTION AND PRESERVATION; TREE BOARD (Municode) City of Richardson · Dallas-Collin/Richardson

Municode host blocks automated fetch (browser-verified). Codified through Ord. 4590 (Supp. 35 Update 2). Mitigation fee amounts are set in the city's Master Fee Schedule, not in the chapter text.

Storm Water Pollution Prevention (Richardson, TX — Building Inspection, Commercial) City of Richardson · Dallas-Collin/Richardson

cor.net 403s automated fetchers — verify via browser; page's E&SC standards doc links moved to NEW IDs /46585 (Residential) and /46587 (Commercial) — old IDs /46121 and /46119 are stale

TCEQ - Water Quality General Permit Summary (TXR040042) TCEQ · Dallas-Collin/Richardson

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Carrollton Code Chapter 173: Stormwater Pollution Prevention — Subchapter IV / § 173.08 City of Carrollton · Dallas/Carrollton

same eCode360 host-change caveat (municode STALE)

Carrollton Code Chapter 173: Stormwater Pollution Prevention — § 173.07 General requirements City of Carrollton · Dallas/Carrollton

code host changed — Carrollton publishes through General Code eCode360 (CA6876); old municode links STALE

FAQs (City of Carrollton, TX — Building Inspection) City of Carrollton · Dallas/Carrollton

the page's 'Tree Protection Ordinance' PDF link (/home/showpublisheddocument/6733/...) is download-gated

Stormwater Requirements for Construction Sites (City of Carrollton, TX) City of Carrollton · Dallas/Carrollton

REPLACES the 404-dead construction-site-operator-information page — do not cite the old URL or its archive; no archive snapshot exists for this new page; the under-1-acre ECP tier is NEW vs. the archived predecessor

Submittal Requirements (City of Carrollton, TX — Building Inspection) City of Carrollton · Dallas/Carrollton

Session A's expected /my-development/required-project-submittals URL is 404 — this is the live path

TCEQ - Water Quality General Permit Summary (TXR040326) TCEQ · Dallas/Carrollton

TCEQ page spells the site name 'CITY OF CARROLTON MS4' [sic]

CITY OF GRAND PRAIRIE — SWP3 REQUIREMENTS FOR SUBMITTAL City of Grand Prairie · Dallas/Grand Prairie

gptx.org PDFs fetch via plain curl but force a download dialog in the browser pane — use curl-style fetch

Erosion Control Plans for Developments (3/5/2013) - City of Grand Prairie City of Grand Prairie · Dallas/Grand Prairie

curl-only fetch caveat (browser forces download); city standard dated 3/5/2013

Grand Prairie UDC ARTICLE 8: LANDSCAPE AND SCREENING (Last Update: NOVEMBER 19, 2024) City of Grand Prairie · Dallas/Grand Prairie

curl-only fetch caveat; older URL variant article-08-landscape-and-screening-01.17.23.pdf 302-redirects here

Private Development Plan Review Guide - City of Grand Prairie City of Grand Prairie · Dallas/Grand Prairie

curl-only fetch caveat (browser forces download)

Stormwater Pollution Prevention Plan (SWP3) - City of Grand Prairie City of Grand Prairie · Dallas/Grand Prairie

gptx.org blocks the WebFetch UA — fetch via plain curl or browser

TCEQ - Water Quality General Permit Summary (TXR040065) TCEQ · Dallas/Grand Prairie

do not confuse with TXR040255 — a separate Dallas County FCD 1 small-MS4 authorization covering Grand Prairie-area land

Irving Code of Civil and Criminal Ordinances Ch. 41 ARTICLE X: MUNICIPAL STORMWATER DRAINAGE REGULATIONS AND ACTS ADVERSELY AFFECTING WATER QUALITY City of Irving · Dallas/Irving

Ord. 8140 (2003) text still uses NPDES/EPA-era terminology; ecode360 403s automated fetchers — verify via browser

Irving Land Development Code Chapter 51: Stormwater Management and Drainage City of Irving · Dallas/Irving

§ 51-18 is fresh law — Ordinance 2025-11145 adopted 8/28/2025

Irving UDC Chapter UDC-4: Development and Performance Standards (§ 4.5 Landscaping and trees) City of Irving · Dallas/Irving

cite UDC-4 § 4.5 as current — Ch. 41 Art. X still cross-references the pre-UDC citation '52-35a'

MDU Compliance - Stormwater Management (Irving, TX Official Website) City of Irving · Dallas/Irving

irvingtx.gov 403s automated fetchers — verify via browser

TPDES Phase I MS4 Permit Applications — City of Irving admin package (WQ0004691000 / TXS001301) TCEQ · Dallas/Irving

~12.7 MB PDF; renewal APPLICATION package, not the final issued permit document

City of Denton - Business Watershed Protection City of Denton · Denton/Denton

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

City of Denton Stormwater Management Plan, TXR040583 (January 2025 - January 2029) City of Denton · Denton/Denton

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

Denton Development Code 7.7.4 Tree Preservation (city-posted code excerpt PDF, Supp. No. 24) City of Denton · Denton/Denton

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

Lewisville Unified Development Code, Chapter VIII.4 Tree Preservation (Municode) City of Lewisville · Denton/Lewisville

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

Lewisville Unified Development Code, Subpart 4 Land Development Regulations - Ch. IX.6 Grading, Filling and Erosion Control; Ch. IX.7 Drainage and Stormwater Controls (Municode) City of Lewisville · Denton/Lewisville

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

TCEQ Water Quality General Permit Summary - TXR040059 (City of Lewisville MS4) TCEQ · Denton/Lewisville

Batch EF intake from _research/collin_denton_batchEF; browser-lane capture 2026-08-09.

Stormwater Management - Review (development review requirements) - City of Fort Worth City of Fort Worth · Fort Worth

Fort Worth's development-review page for stormwater: the Grading Permit + Stormwater Drainage Study trigger at 1.0 acre (or smaller sites within a common land plan development), the iSWM Plan Grading Permit from the 2012 Grading Ordinance, and the 2024 Stormwater Criteria Manual updates. The place to check before grading in Tarrant County's biggest market.

City of Frisco Code of Ordinances - Article IX Stormwater Discharge City of Frisco · Frisco

Frisco's stormwater discharge ordinance (city code Article IX). Cite for the 7-calendar-day self-inspection rule (a TPDES-compliant alternative schedule is allowed), the 7-day SWPPP revision turnaround after inspections, and Sec 34-341 right-of-way construction requirements.

City of Frisco Engineering Standards - General Notes (2025) City of Frisco · Frisco

City of Frisco's engineering General Notes. Cite for Frisco-specific construction requirements; note Frisco requires wire-reinforced silt fence and permits capped steel posts (it does NOT prohibit metal T-posts).

Guidelines for SWP3 and Erosion Control Plan Preparation (1/25/23) City of Frisco · Frisco

Frisco's SWP3 preparation guide. Cite for the submittal path: signed SWP3 and NOI to Engineering Services before the pre-construction meeting can be scheduled, permit-coverage evidence when applying for grading/building/ROW permits, and erosion control plans required on all construction plans regardless of size.

Stormwater - City of Frisco official program page City of Frisco · Frisco

Frisco's stormwater program hub: links to the Stormwater Discharge Ordinance, the TCEQ MS4 permit, and the city's Stormwater Management Program. The starting point for Frisco's current stormwater documents and contacts.

City of Garland Code of Ordinances - Ch. 31 Engineering, Art. XII Stormwater Quality City of Garland (eCode360) · Garland

2-day NOI/site-notice to city + 7-day AND 24-hr/0.5-inch inspection cadence. ecode360 bot-blocks fetchers - BROWSER-VERIFY on sweeps (verified via browser 2026-07-15; capture in _source_cache).

City of Denison Stormwater Management Program (SWMP), December 2025, Revision 1 City of Denison · Grayson/Denison

PDF, browser-UA capture 2026-08-09; Chapter 26 Art. II Div. 6 ordinance identified in 6.4.1.

Denison Construction Sites page (SWPPP and site-notice submittal requirements) City of Denison · Grayson/Denison

denisontx.gov 403-blocks plain fetches - browser-UA capture 2026-08-09. NOTE: page cites the 2018 CGP date (stale on their side); cite only the city-procedure sentences, never the permit-date line.

City of Pottsboro Phase II MS4 Stormwater Management Program, FINAL 2.5.25 City of Pottsboro · Grayson/Pottsboro

PDF retrieved 2026-08-09; TXR040451 ACTIVE; once-regulated-always-regulated statement; BMP 4.C/4.D construction program.

Sherman Code of Ordinances, Article 14.04 - Supplementary District Regulations (landscaping and tree preservation) City of Sherman · Grayson/Sherman

Official code host; carries Ord. 6681 (12/18/2023) tree preservation + Ord. 6692 (2/5/2024) landscaping mechanics.

Sherman Code of Ordinances, Article 3.13 - Stormwater Discharges from Construction Activities City of Sherman · Grayson/Sherman

Official code host (eCode360); Ordinance 6691 amendment 2/5/2024 noted on-page. Bot-block risk on plain fetches - browser-UA capture 2026-08-09.

Town of Highland Park - Forms & Applications (Storm Water Protection Measures) Town of Highland Park · Highland Park

2013-01-28 Storm Water Protection Measures: builder continuous maintenance; shut-down/citations for mud leaving the site. Links the Erosion Control Packet PDF.

City of Mansfield - Construction (stormwater site requirements) City of Mansfield · Mansfield

Small CSN sent+posted <5ac; both primary AND secondary operators post a Large CSN on site. Verified 2026-07-15 for the Tarrant County guide.

City of McKinney General Notes 2026 (plan-set general notes) City of McKinney · McKinney

McKinney's official plan-set general notes - the EROSION CONTROL & VEGETATION section is the construction-stormwater spine: a grading permit for all soil-disturbing activity, the erosion control plan to the Stormwater Administrator before grading, city inspection before work starts, and weekly contractor review. Read it before pricing any McKinney dirt work.

Stormwater Construction (Erosion Control) - City of McKinney City of McKinney · McKinney

The city's construction-stormwater program page: operator responsibilities, erosion-control expectations, and the city's own inspection program. Pairs with the General Notes for the full McKinney picture.

MS4 Permit - City of Plano (Stormwater Program) City of Plano · Plano

Plano's MS4 permit page: the city has operated under a TCEQ-issued MS4 permit since 2007, with a Stormwater Management Program whose minimum control measures include construction-site stormwater runoff.

SWPPP Forms - City of Plano (Engineering / Development) City of Plano · Plano

Plano requires its own Standard SWPPP narrative sheets - small site (1-5 acres) or large site (5+ acres), city-funded or private - and this page carries the forms plus the city's Erosion Control Manual and Stormwater Design Manual. Start here for any Plano SWPPP submittal.

Construction & Commercial Pollution Prevention - Town of Prosper Town of Prosper · Prosper

Prosper's construction pollution-prevention guidance page. Cite for the town's directives on wattles/silt fence, keeping excavated soil on site, and never scheduling earth-moving when rain is forecast.

Town of Prosper Code of Ordinances - Division 2 Stormwater Discharge Town of Prosper · Prosper

Prosper's stormwater discharge ordinance (same model-ordinance family as Frisco's). Cite for the 7-calendar-day self-inspection duty, BMP revision after inspections, and the penalty-of-law contractor certification requirement. Link-health note: ecode360 returns 403 to automated fetchers (bot-block, not link death) - sweeps must browser-verify before marking DEAD.

NCTCOG iSWM Participating Cities page NCTCOG · Region

Lists Arlington Bronze since 2022; Grapevine/Keller/NRH absent (same fetch) - never claim certification for them.

City of Southlake - Stormwater Management for Construction Sites and Developments City of Southlake · Southlake

SWPPP acceptance letter via Energov Self Service + 7-day inspections uploaded to Energov. Verified 2026-07-15 for the Tarrant County guide.

Arlington Construction Compliance Program page City of Arlington · Tarrant/Arlington

arlingtontx.gov 403s fetchers + old URL scheme dead post-redesign; browser-lane capture 2026-08-09.

City of Grapevine 2024 Storm Water Management Plan (SWMP) City of Grapevine · Tarrant/Grapevine

Cover bears typo TXR040411; correct auth is TXR040114 (interior headers + TCEQ registry) - always cite TXR040114.

Grapevine Code Appendix F - Erosion and Sedimentation Control (Ord. 87-45) City of Grapevine · Tarrant/Grapevine

Municode JS app; browser-lane capture 2026-08-09.

Grapevine Zoning Ordinance Section 52 - Tree Preservation (PDF) City of Grapevine · Tarrant/Grapevine

City-posted PDF of the tree preservation section; the posted copy carries a draft stamp, so confirm current codification before relying on it.

Keller Stormwater Management Program page City of Keller · Tarrant/Keller

cityofkeller.com 403s fetchers; browser-lane capture 2026-08-09.

Keller UDC Article Five Sec. 5.02 - Grading, Excavating, and Land Clearing Permit City of Keller · Tarrant/Keller

Municode browser-lane capture 2026-08-09; code banner VERSION MAY 26 2026.

Keller UDC Article Ten - Tree Preservation City of Keller · Tarrant/Keller

Renumbered from Article Eight by Ord. 2104 (12-6-2022); browser-lane capture 2026-08-09.

NRH Code Ch. 102 Art. VI Erosion and Sediment Control, Div. 4 Procedures City of North Richland Hills · Tarrant/North Richland Hills

eCode360 browser-lane capture 2026-08-09; Ord. 3070 (9/28/2009); 102-335 codifies iSWM Design Manual.

NRH Code Ch. 114 Art. II - Trees City of North Richland Hills · Tarrant/North Richland Hills

eCode360 browser-lane capture 2026-08-09; 4-inch protected tree; drip-line prohibitions.

NRH Public Works Design Manual (2009) City of North Richland Hills · Tarrant/North Richland Hills

2009 manual mirrors an older CGP edition - cite city process/bond/hardware only; the code (102-335) controls design criteria.

American Excelsior Erosion Control (Curlex) American Excelsior

American Excelsior's erosion-control line (Curlex ECBs + Recyclex TRMs). American Excelsior Company is headquartered in Arlington, TX; Curlex fiber is Great Lakes aspen. Cite for degradable RECP/ECB and TRM (ASTM D6818) specs. URL canonicalized 2026-07-12 — old /product-category/ path 301s here.

Faircloth Skimmer - Sizing & Installation J.W. Faircloth & Son

J.W. Faircloth & Son's skimmer sizing tools and installation resources. Reference for sediment-basin surface-dewatering design.

Flexamat Articulated Concrete Matting Motz Enterprises

Manufacturer resource for Flexamat tied-concrete-block matting. Use it for Flexamat product specs and installation on hard-armor and channel-lining pages.

PROPEX Erosion Control product family (Solmax) Solmax

Propex-under-Solmax family verified live 2026-07-23: Armormax, Landlok ECB/TRM, Pyramat 25 (TRM), Pyramat 75 (HPTRM), Pyramattress, Pyrawall, Scourlok. Official names are Pyramat 25/75 (internal shorthand P25/P75). Cite for brand/product-family facts; propex-001 remains the install-guidelines source. SPA URL - browser-verify on sweeps.

PROPEX Pyramat / Armormax Installation Guidelines Propex (Solmax)

Official PROPEX/Solmax install guidance for Pyramat and the Armormax high-performance turf reinforcement mat system. Cite for HPTRM install specs on channel and slope pages.

Western Excelsior Products Overview (PP5 TRM line) Western Excelsior

PP5-8/-10/-12/-Pro/-Xtreme + Xtreme Armor System verified live 2026-07-23 (provenance capture in _source_cache). Also documents Western straw + coir logs (corroborates E1c coir). URL resolves to site root - browser-verify on sweeps.