Between which distances should soil samples be spaced?

Between which distances should soil samples be spaced?

• A. 1 to 2 feet
• B. 2 to 6 feet
• C. 6 to 12 feet
• D. 12 to 20 feet

Answer: (B)

When planning soil sampling for lead, you want enough resolution to detect variations in contamination around the property without collecting an excessive number of samples. Spacing samples about 2 to 6 feet apart provides that balance. It allows you to detect potential hotspots near the foundation, play areas, or garden beds, while covering the area efficiently. If you place samples too close together, you pay for little additional information; if they’re too far apart, you risk missing elevated lead areas and getting an unrepresentative average. Therefore, 2 to 6 feet apart is the practical, representative choice.

When planning soil sampling for lead, you want enough resolution to detect variations in contamination around the property without collecting an excessive number of samples. Spacing samples about 2 to 6 feet apart provides that balance. It allows you to detect potential hotspots near the foundation, play areas, or garden beds, while covering the area efficiently. If you place samples too close together, you pay for little additional information; if they’re too far apart, you risk missing elevated lead areas and getting an unrepresentative average. Therefore, 2 to 6 feet apart is the practical, representative choice.