3.2 Environmental Controls, Permits & SWPPP/BMPs

Environmental Controls, Permits & SWPPP/BMPs

Quick Answer: Pipeline construction environmental compliance rests on three pillars: the SWPPP and its BMPs for stormwater, the FERC Wetland and Waterbody Procedures (May 2013) for waterbody crossings, and the permit set (road, railroad, encroachment, wetland, landowner) that must be physically on site before work begins. The API 1169 inspector's job is to verify these are in place and that field conditions match the approved plan — not to author them.

SWPPP and BMPs

The Stormwater Pollution Prevention Plan (SWPPP) is the project's master document for controlling sediment and pollutant runoff from construction activities. It is typically required under the NPDES Construction General Permit for projects disturbing more than one acre. The SWPPP identifies the Best Management Practices (BMPs) to be installed and maintained:

• Silt fence and straw-bale barriers along the right-of-way
• Ridge breakers / water bars on slopes to slow runoff
• Rock check dams in ditches and drainage channels
• Trench plugs / trench breakers at slope transitions to prevent water flow along the trench
• Stabilized construction entrances to prevent mud tracking onto public roads
• Spoil management — keeping spoil out of waterbodies and wetlands

Topsoil Segregation

On agricultural and certain other lands, topsoil is segregated from subsoil so it can be replaced as the final layer during restoration. The inspector verifies that topsoil is stripped to the depth specified in the project plan, stockpiled separately (typically with temporary seed or mulch cover if stored long-term), and not contaminated by subsoil, rock, or debris during backfill.

Erosion Control

Temporary erosion controls are installed as the trench is opened and maintained until permanent vegetation is established. The inspector checks that:

• BMPs are installed per the approved drawings, not improvised in the field
• Damaged BMPs (a silt fence undermined by runoff, a torn straw wattle) are repaired or replaced promptly
• BMPs are inspected on the frequency the project's stormwater permit sets. Under EPA's 2022 NPDES Construction General Permit the operator picks one of two schedules: once every 7 calendar days, or once every 14 calendar days plus within 24 hours of the end of a storm event producing 0.25 inch or more of rain. State permits may be stricter — read the permit, do not assume a number

Waterbody and Wetland Crossings — FERC Procedures

For FERC-jurisdictional projects, the FERC Wetland and Waterbody Construction and Mitigation Procedures (May 2013) govern how crossings are executed. Key requirements the inspector verifies:

The inspector verifies the contractor is following the project's specific procedures including any FERC-granted variances, because FERC may grant variances to the May 2013 baseline on a project-by-project basis.

Migratory Bird Constraints

Clearing of trees and brush during the migratory bird nesting season is restricted because active nests are protected. The two on-screen references are:

• United States — 50 CFR 21 (Migratory Bird Permits, Subpart B), the federal regulation under the Migratory Bird Treaty Act
• Canada — Migratory Bird Convention Act, 1994, Sections 4-6 and 12

In practice, the project plan sets a nesting season window (commonly April 1 through August 31, varying by region and species). If clearing must occur during that window, a qualified biologist performs a nest survey immediately ahead of clearing, and active nests are buffered until young fledge. The inspector verifies that clearing timing and any nest surveys match the approved plan.

Hazardous Material and Spill Response

Pipeline construction uses fuels, lubricants, and coating materials that can spill. The inspector confirms:

• Spill kits are staged at equipment-fueling locations and at waterbody and wetland crossings
• Equipment is refueled at least 100 ft from a waterbody (or per the project's SPCC plan) with a catch pan
• If a spill occurs, the sequence is: stop the source, contain the spill, notify the designated authority (and the landowner if on private land), document the quantity and response, and remediate per the spill plan
• Reportable quantities trigger notification of the National Response Center (US) or the appropriate provincial or agency contact (Canada)

Permits and "Permit on Site"

The inspector verifies that the relevant permits are physically present at the work location (or accessible as the project requires) and that field work matches the permit conditions. Common permit types:

Verifying Permit Conditions

The inspector does not obtain permits — that is the operator's or contractor's responsibility. The inspector's role is to verify the permit exists on site and that the work matches its conditions. If a contractor begins a road crossing without the permit on site, or works outside the permitted hours, that is a nonconformance the inspector documents and escalates. Work that proceeds without a required permit may also be a stop-work condition if it creates imminent environmental or safety harm.

US vs Canadian Environmental References