2. Survey Type C: Site Reconnaissance

When requesting a Survey Type C site reconnaissance, the client should include the following text in the specification document:

Undertake a Survey Type C: Site Reconnaissance, as defined in Section 8 of PAS 128:2022, of the required site area (reference to the search boundary plan to be provided by the client). This shall comprise an on-site visual inspection of all accessible parts of the site and to identify physical features above ground that support the existence of utilities within the survey area in comparison to utility records. The survey data will be used to assess if there are any conflicts that need to be resolved.

Where the utility records can be matched to surface features, the quality level achieved shall be documented as QL-C.

Where the utility records cannot be matched to surface features, the quality level achieved shall be documented as QL-D.

The search shall identify and include:

• 01. A plan showing the boundary, the presence, type and markings of utility-related surface features.
• 02. Measurements between known surface features on the ground compared with those depicted on any existing plans.
• 03. Differences between features on existing records supplied and those visible on the ground.
• 04. Surface features to be included in the on-site checks shall include as a minimum:
  • a) manhole and inspection chamber covers
  • b) valve covers c) utility markers
  • d) control and distribution pillars and columns, LV power, street lighting, traffic lights
  • e) historic excavation scar lines.

Reporting should be conducted with reference to clauses 8.2.4, 8.2.5 and 8.2.6 of PAS 128:2022.