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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| Illian and Sons Inc. | Salisbury, MD | — | Inspector (BAT O&M)Inspector (Property Transfer)Installer (At-Grade)Installer (BAT)Installer (Sand Mound) | 01364 |
| IMEG Consultants Corp. | Lanham, MD | — | Inspector (BAT O&M)Inspector (Property Transfer)Installer (At-Grade)Installer (BAT)Installer (Sand Mound) | 01467 |
| Innovative Septic, LLC | Hughesville, MD | — | Inspector (BAT O&M)Inspector (Property Transfer)Installer (BAT) | 01162 |
| Irvin Hayes Plumbing & Heating | Easton, MD | — | Inspector (BAT O&M)Inspector (Property Transfer)Installer (At-Grade) | 00667 |
| Island Aggregate | Stevensville, MD | — | Inspector (BAT O&M)Inspector (Property Transfer)Installer (At-Grade)Installer (Sand Mound) | 00793 |
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