Signs of a failing system include standing water days after rain, poor crop yields in wet areas, or visible tile line collapses. A contractor can camera-inspect existing lines to determine whether spot repairs or a full redesign is more cost-effective for your acreage.
The WOLFE 540 is a dedicated drainage plow that installs tile at precise depths and grades in a single pass - minimizing soil disturbance and improving accuracy over traditional trenching. Loken Excavating uses a WOLFE 540 on every drainage project, which means cleaner installs and less field recovery time.
Fall is typically ideal - fields are dry, crops are harvested, and frozen ground hasn't set in. Spring installations are possible but risk compaction on wet soils. Summer works if fields are dry. Avoid scheduling when soils are saturated, as heavy equipment can cause significant rutting.
Crushed rock (angular, compacted) is best for driveways, base layers, and load-bearing pads. Washed aggregate (rounded, clean) is preferred for drainage applications, landscaping, and septic system leach fields. Loken Excavating washes aggregates at their own plant, ensuring consistent quality for either application.
A standard driveway typically requires 4-6 inches of compacted gravel depth. Length, width, and existing base condition all affect tonnage. Soft or clay-heavy soils may need a geotextile fabric layer underneath, which can add material. Getting a site-specific estimate prevents costly over- or under-ordering.
Sandy or loamy soils excavate quickly and cheaply. Clay-heavy or rocky ground - common in southern Minnesota - slows equipment and increases labor time. Slope, access width, and how far excavated material must be hauled or stockpiled are also major cost drivers.
Disturbed soil can take weeks to months to settle naturally, depending on fill depth and soil type. Proper compaction during the grading process dramatically accelerates this. Skipping compaction to save time is one of the most common - and expensive - mistakes on construction projects.
Always. Surface runoff from impervious areas like parking lots concentrates water quickly. Without planned drainage - whether surface swales or underground tile - erosion, ponding, and pavement heaving follow. Loken Excavating addresses drainage as part of the excavation and grading design, not an afterthought.
Frequent backups, slow drains, odors near the drain field, or wet/lush patches of grass over the tank or field lines are warning signs. Pumping solves temporary capacity issues; a failing drain field or cracked tank requires excavation and replacement. Loken Excavating handles both the design and installation of new septic systems.
A drainage ditch moves water away efficiently; a wildlife pond or constructed waterway holds and slows it. Properly designed, a waterway can do both - managing runoff while creating habitat. The key is in the grading and outlet design, which requires experienced excavation work to function correctly across seasons.
Properly installed tile can last 30-50+ years. Iron ochre (bacterial buildup), root intrusion, and sediment are the main causes of clogging. Perforated corrugated plastic tile - the modern standard - resists most of these issues better than older clay tile. Older clay systems in the area are increasingly being replaced or supplemented.
Tree removal involves cutting, stump grinding or full stump removal, and hauling debris. Stumps left in place can cause settling and equipment hazards if buried. Our experience shows that fully clearing and grubbing a site before grading produces a more stable, consistent base - especially for building pads and parking areas.