For much of the way, Imperial Highway is signed as State Route 90. A de facto freeway portion of the route in Yorba Linda is also known as the Richard M. Nixon Parkway. The portion in Los Angeles County is located about one mile north of, and runs parallel to, Rosecrans Avenue.
Are areas of your lawn bumpy and uneven? When you walk across these areas does the soil sink or feel soft? If so, some type of soil dwelling critter is probably the cause. During winter the activity of moles, earthworms, and mole crickets can cause mounds and tunnels in lawns that result in uneven or rough patches. To fix these problem areas you must first diagnose which critter is causing the damage. Earthworms.
Allow grass to grow up through soil added to your yard to level the surface. No matter how level your lawn is when you first seed it or put down sod, it probably will develop some uneven spots over time. Ground settling and erosion are two primary causes of an uneven lawn.crape off the grass attached to 2 inches of topsoil in portions of the lawn that are too high or that have deeper impressions that a 1/2-inch filler cannot correct. Use the flat edge of a shovel held horizontally to the ground to remove the grass in patches. Set the grass aside.