Parks and Recreation, Department of
(California Department of Parks and Recreation)
Soil Survey Soil Sampling
NOE - Notice of Exemption
Collect soil samples in old growth redwoods stands near Cottoneva El River in Humboldt Redwoods State Park for analysis by the National Soil Survey Laboratory and to support soil maps of the park. Work will manually excavate 2 pits, about 150 cm (60 inches) deep and 60 X 70cm square (24-28 inches square), at the base; collect one gallon of soil material from each identified soil layer; and collect 4 each, 3/4 cup size clods for bulk density and thin section analysis.
Sites will be selected away from redwood trees to inhibit the potential for root damage and so no roots over 1 inch in diameter will be cut; excavation outside the rainy period and the disposition of excess soil, at least 50 feet from any watercourse reduces the risk of soil traveling to watercourse. In additions, topsoil will be separated to be spread as a top dressing upon closure of the pits; pit design will comply with OSHA regulation; and test pits will be excavated, described, and closed in one day to inhibit wildlife tapping or entry by the public.