Concrete with Concrete with Concrete with waterstop (ACI waterstop (ACI waterstop (ACI 330R, 360R, 318) 330R, 360R, 318) 330R, 360R, 318) PLUS Secondary PLUS Secondary Concrete with PLUS Secondary Liquid Liquid waterstop Liquid Containment- Meeting ACI 350 Containment-Soil Geomembrane Sand or 350 Appendix Liner Liner Liner H 1. Soils of the Secondary Liquid Containment Fines 40 % Foundry sand — — Plasticity Index (PI) 12 — — — Thickness (bottom and sides) 1.5 feet 1.5 feet — — Compaction of Placed Material WI Spec 204 WI Spec 204 WI Spec 204 — 2. Separation Distances Sink hole 250 feet 250 feet 250 feet 250 feet Well 100 feet 100 feet 100 feet 100 feet Subsurface Saturation Note 1 2.0 feet 4 feet 3 feet 4 feet Bedrock Note 1 1.5 feet 3 feet 2 feet 3 feet Note 1 Separation distance assumes a concrete thickness of 6 inches. Increase separation distance if slab thickness is greater than 6 inches by an amount equal to the variation. Design the storage structure as a reinforced concrete hydraulic or environmental structure according to NRCS NEM, Part 536, Structural Design. (Concrete with waterstop ACI 350 or 350 Appendix H) Alternatively, use a flexible membrane or earthen liner to provide secondary liquid containment for structures constructed with other methods described in NRCS NEM, Part 536, Structural Design. (ACI 330R, 360R or 350 Appendix H) HDPE or earthen liner under a twelve (12) inch minimum drainage layer, and a drainage system entering an observation and pumping port and then continuing by gravity to a surface outlet. Monitor the discharge for flow depth and pollutants. If pollutants are identified, block the gravity outlet and utilize a pump to remove the polluted liquids until the source is identified and repairs can be completed. Pump pollutants to an appropriate location (e.g. pumped back to the structure or spread per a nutrient management plan). Consider texturing concrete surfaces to provide traction for rubber-tired equipment. PLANS AND SPECIFICATIONS Prepare plans and specifications for a concrete liner for a pond or a waste storage impoundment that describe the requirements for applying the practice to achieve its intended purpose. As a minimum, include: Soils investigation, including subgrade. Concrete and reinforcing requirements. Quantities of concrete and reinforcement as specified. Subgrade preparation, materials and compaction.
Concrete with waterstop Meeting ACI 350 or 350 Appendix H Concrete with waterstop (ACI 330R, 360R, 318) PLUS Secondary Liquid Containment-Soil Liner Concrete with waterstop (ACI 330R, 360R, 318) PLUS Secondary Liquid Containment- Geomembrane Liner Concrete with waterstop (ACI 330R, 360R, 318) PLUS Secondary Liquid Sand Liner 1. Soils of the Secondary Liquid Containment Fines — 40 % — Foundry sand Plasticity Index (PI) — 12 — — Thickness (bottom and sides) — 1.5 feet — 1.5 feet Compaction of Placed Material WI Spec 204 WI Spec 204 — WI Spec 204 2. Separation Distances Sink hole 250 feet 250 feet 250 feet 250 feet Well 100 feet 100 feet 100 feet 100 feet Subsurface Saturation Note 1 2.0 feet 4 feet 3 feet 4 feet Bedrock Note 1 1.5 feet 3 feet 2 feet 3 feet Note 1 Separation distance assumes a concrete thickness of 6 inches. Increase separation distance if slab thickness is greater than 6 inches by an amount equal to the variation. Design the storage structure as a reinforced concrete hydraulic or environmental structure according to NRCS NEM, Part 536, Structural Design. (Concrete with waterstop ACI 350 or 350 Appendix H) Alternatively, use a flexible membrane or earthen liner to provide secondary liquid containment for structures constructed with other methods described in NRCS NEM, Part 536, Structural Design. (ACI 330R, 360R or 350 Appendix H) HDPE or earthen liner under a twelve (12) inch minimum drainage layer, and a drainage system entering an observation and pumping port and then continuing by gravity to a surface outlet. Monitor the discharge for flow depth and pollutants. If pollutants are identified, block the gravity outlet and utilize a pump to remove the polluted liquids until the source is identified and repairs can be completed. Pump pollutants to an appropriate location (e.g. pumped back to the structure or spread per a nutrient management plan). Consider texturing concrete surfaces to provide traction for rubber-tired equipment. PLANS AND SPECIFICATIONS Prepare plans and specifications for a concrete liner for a pond or a waste storage impoundment that describe the requirements for applying the practice to achieve its intended purpose. As a minimum, include: Soils investigation, including subgrade. Concrete and reinforcing requirements. Quantities of concrete and reinforcement as specified. Subgrade preparation, materials and compaction.