| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. STOCKPILE AREA AND DRAINAGE | |||
| A1 | Stockpile area clean and well-drained; no water pooling or mud accumulation Acceptance: Ground level with proper slope; drainage channels clear; no standing water | Cl. 8 — Storage conditions | OK NC NA HOLD |
| A2 | Area segregated by aggregate grade: 20mm coarse, 10mm coarse, fine sand separate Acceptance: Physical separation with clear demarcation; no mixing of grades; easy identification | Cl. 8 — Grade segregation | OK NC NA HOLD |
| A3 | Stockpile area free from contamination: no cement, soil, waste, or foreign materials Acceptance: Area clean; no debris or contaminants visible; no mix with other materials | Cl. 8 — Contamination prevention | OK NC NA HOLD |
| B. STOCKPILE CONDITION AND INTEGRITY | |||
| B1 | Stockpile shape and stability maintained; no slumping or segregation visible Acceptance: Heap stable with proper angle of repose; no material breakdown; no cracks | Cl. 8 — Physical integrity | OK NC NA HOLD |
| B2 | No material segregation in stockpile; coarser and finer particles uniformly distributed Acceptance: Random sampling from different heap locations shows consistent grading; no segregation | Cl. 8 — Uniformity | OK NC NA HOLD |
| B3 | Moisture condition acceptable: not waterlogged; adequate drainage confirmed Acceptance: Surface damp acceptable; not saturated; drainage channels functional | Cl. 8 — Moisture control | OK NC NA HOLD |
| B4 | No crust formation or hardening on heap surface indicating prolonged moisture/weathering Acceptance: Heap surface free-flowing; no caked or hardened layer; particles loose and accessible | Cl. 8 — Surface condition | OK NC NA HOLD |
| C. FOREIGN MATTER AND CONTAMINATION CHECK | |||
| C1 | Random visual inspection for foreign materials: wood, plastic, paper, metal debris Acceptance: Inspection of 10-15 random locations; no foreign inclusions; clean aggregate confirmed | Cl. 8 — Purity check | OK NC NA HOLD |
| C2 | Fines and dust content acceptable; not excessive powder coating on particles Acceptance: Visual assessment <5%; if >5%, quarantine for washing or re-testing | Cl. 5.3 — Dust limit | OK NC NA HOLD |
| C3 | No deleterious materials visible: coal, shells, weak stones, or shale Acceptance: Visual inspection shows clean material; no coal, shells, or friable particles | Cl. 5.4 — Harmful substances | OK NC NA HOLD |