CLARB Study Guide 2026

The primary function of a non-woven geotextile in this application is filtration and separation. It allows water to pass through into the drainage aggregate but prevents fine soil particles from the retained earth from migrating and clogging the aggregate, which would compromise the drainage system's effectiveness and increase hydrostatic pressure.

Hydric soils formed under prolonged waterlogged conditions exhibit mottling, gleying, and low chroma colors that indicate wetland conditions, and are one of the three required criteria for jurisdictional wetland delineation.

Section 404 requires a USACE permit for any discharge of fill material into jurisdictional waters of the US, including wetlands, streams, and other water bodies.

Substantial Completion is the stage at which the work is sufficiently complete in accordance with the contract documents so that the owner can occupy or utilize the work for its intended use. This is a critical milestone because it typically marks the start of the contractor's warranty period and the transfer of responsibility for security, maintenance, and insurance from the contractor to the owner. The punch list of minor corrective items is usually generated at this stage, and final completion occurs after these items are addressed.

The angle of repose defines the steepest angle at which loose soil remains stable; it directly dictates maximum allowable slope gradients for cut and fill sections.

Bidding documents clearly state the deadline for bid submission. Failure to submit the bid by the specified date and time is a material irregularity and a primary reason for a bid to be rejected as non-responsive, regardless of its price or other merits.