Subsurface detection (bundle of 4)
 
8.7.2.2. Distribution pipes within Leaching Beds
(1) Sentence (2) applies to the design and constructionof a leaching bed with distribution pipes used within the leaching bed.
(2) The header line and distribution pipeswithin a leaching bed shall be designed and constructed so that they can be detected by,
(a) magnetic means,
(b) means of a 14 gauge TW solid copper light coloured plastic coated tracer wire, or
(c) other means of subsurface detection.