SWPPP Narrative & Manual Preparation

What is a SWPPP narrative?

Terradyne prepares the site-specific SWP3 document — a narrative with site data, BMP selections, and maps, plus completed TCEQ permit forms such as the NOI and CSN as applicable — delivered as a PDF. One package, written from your grading plan and your schedule, ready for the reviewer at the city and the record at the state.

Who needs one — and when

The plan is not optional paperwork for large sites only. TXR150000 defines small construction activity to include clearing, grading, and excavating that disturb at least one acre and less than five acres. TXR150000 defines large construction activity to include clearing, grading, and excavating that disturb five or more acres — and smaller disturbances that are part of a larger common plan of development or sale that will ultimately disturb five or more acres. Lots inside a common plan inherit the obligation even when the individual lot is small. The timing rule is the one that catches people. Under TXR150000, the SWP3 must be prepared prior to obtaining authorization under the general permit, and implemented prior to commencing construction activities that result in soil disturbance. By the time anyone is asking for the document, it is already supposed to exist — written, signed, and implemented on the ground.

What goes in the plan

A narrative is a description of the site as a pollution problem and its controls as the answer. TXR150000 requires the SWP3 to include a description of potential pollutant sources in discharges of stormwater from all areas of the construction site where construction activity, including construction support activities, will be located, and a description of the controls and measures that will be implemented at those sites to minimize pollutant discharges. The SWP3 must include a description of construction and waste materials expected to be stored on-site and a description of controls to minimize pollutants from these materials. A plan written from a template reads like one. A plan written from your grading plan, your soils, and your schedule holds up when someone checks it against the dirt. That is the difference between a binder that survives review and one that generates comment letters.

How the narrative gets written

The desk starts with what already exists: the civil set, the drainage design, the phasing plan, and whatever the jurisdiction has already said about the project. The plan is assembled from those documents rather than beside them — controls chosen for the soils and slopes actually drawn, schedules matched to the sequence the superintendent actually intends, responsibilities written to the contract structure that actually exists. Drafts route once through the client for the facts only a builder knows — who owns which controls, where laydown really goes, which phases overlap — and the corrections land before the document is signed rather than after something is caught.

The finished manual reads like the site because it came from the site's own paper. That is not a stylistic preference; it is what keeps the plan defensible when the ground and the document are compared line by line — and they will be compared.

Where the plan lives

The narrative is a field document, not an office file. TXR150000 requires the SWP3 to be retained on-site at the construction site — or, if the site is inactive or has no on-site place to store the plan, a posted notice describing the location of the SWP3. Crews, inspectors, and the city all reach for the same copy, which is why the deliverable is built to be kept at the jobsite and read by people in boots. A binder that lives in the trailer earns its keep the first time a reviewer shows up unannounced. The narrative also anchors everything else on this desk — the maps are its exhibits, the logs are its evidence, and the addenda are its edit history.

The permit behind the plan

The TPDES Construction General Permit TXR150000 is effective March 5, 2023 through March 5, 2028. Every narrative Terradyne prepares is written against the current permit text — the requirements come from the permit, the site data comes from your civil set, and the plan is the bridge between them.

Beyond the Metroplex

Terradyne prepares SWPPP narratives and documentation remotely for projects beyond Dallas–Fort Worth, including the greater Houston and greater San Antonio areas. The field program stays DFW; the paperwork travels — same narrative discipline, delivered to the project wherever it sits.