Whilst much less popular, acoustic locators may be used to detect infrastructure—like plastic pipes—which might be more difficult to pinpoint utilizing other strategies. An acoustic pipe locator sends audio waves into the bottom and detects the mirrored sign from your buried infrastructure. Several utilities are forever marked with short posts https://digitalasset.blob.core.windows.net/digitalassets/Bess-Utility-Solutions-Hayward/Utility-Locating-Hayward-CA.html