Concrete PolyLock, nke a na-akpọkwa E-mkpọchi ma ọ bụ polylock, nke HDPE mere, E-dị ka E, dabara adaba maka ịrapara na kọmpụta. A na-atụba ya ma ọ bụ tinye ya n'ime mmiri mmiri mgbe a na-eji ya, maka elu ịgbado ọkụ, geomembrane nwere ike ịgbanye ya ngwa ngwa. Ebe dị mma nke nwere obosara 15cm ma ọ bụ 10cm bụ maka ịgbado mpempe akwụkwọ polyethylene ebe a na-eji mkpịsị aka dị elu 3-4cm tinye ihe ntanetị wee kpochie ya ma dozie nkwonkwo ya na geomembrane iji mee ka ụlọ akụ zuru oke na-enweghị mmiri.