1. Referring to 5.8.2 in your letter, "HCIS Category 1 fensing system, Figure 2" does not allow cameras to be placed in the anti-vehicle layer, but they are to be placed in the intrusion sensors layer. // 2. Shifting IDAS/ MIDs by 1m closer to ditch will achieve 95% coverage of what, is not clear, and not supported by any coverage calculations. //3. ICC is urged to appoint appropriate personnel in relevant disciplines in its team to evaluate queries raised by its subcontractors before sending them to SAPMT. //4. The anti vehicle layer according to IDAS exists between the crash rated wall and the intrusion sensors layer and both layers are contiguous. //5. ICC shall suggest and reflect in attached sketches as to what type of coverage is available for the width of the ditch with current arrangement, how the coverage from IDAS can cover the width of the ditch with proposed shifting, what effect will such an arrangement have on the maintenance operations inside the ditch, and how alarms and alerts will be managed if detection is extended to the whole width of the ditch as compared to the current detection criteria.