Typically the soils of the Southwest United States, where such construction has been widely used, are an adequate composition.
tˈɪpɪkli ðə sˈɔɪlz ʌvðə saʊθwˈɛst juːnˈaɪɾᵻd stˈeɪts, wˌɛɹ sˈʌtʃ kənstɹˈʌkʃən hˈæzbiːn wˈaɪdli jˈuːzd, ɑːɹ ɐn ˈædɪkwət kˌɑːmpəzˈɪʃən.