Biological Monitoring Activities Supporting Munitions and Explosive of Concern Action at Former Fort Ord, Monterey, California

Tetra Tech was contracted to provide biological monitoring and reporting services necessary to comply with the Army’s responsibilities described in the Installation-Wide Multispecies Management Plan, Vegetation Monitoring Protocol, Wetland Restoration and Monitoring Plan, for the Former Fort Ord Ins ..... More

Development of a two-phase sampling design for the Mohave ground squirrel (Xerospermophilus mohavensis)

The Mohave ground squirrel (MGS) is listed as Threatened by the state of California and occurs throughout the western Mohave Desert. Edwards AFB represents one of four “core” areas within the species distribution. The MGS is spatially and temporally patchy, undergoes pronounced population cycles tha ..... More

Desert Tortoise Studies at Edwards AFB

Tetra Tech conducted multiple studies on the biology of the desert tortoise population at Edwards AFB between 2004 and 2012. The desert tortoise (Gopherus agassizii) was federally listed as a threatened species in 1990, and a recovery plan was published and critical habitat designated in 1994. The f ..... More

Habitat Restoration at Edwards Air Force Base, California

Edwards Air Force Base contracted Tetra Tech to restore 400 acres of land on the Base. Four primary areas were selected for habitat restoration efforts including Branch Memorial Park, Avenue B, the OHV2 area and perimeter roads, and roads on the northwest corner of the Base. Currently, habitat resto ..... More

Aquatic Invertebrate Survey at Edwards Air Force Base, California

Edwards Air Force Base contracted Tetra Tech to survey ephemeral ponds on the Base to characterize the occurrence and distribution of branchiopod crustaceans (Orders: Anostraca, Notostraca, and Conchostraca) and the presence of other dominant aquatic invertebrates. In this study, Branchinecta gigas, ..... More

Large Mammal Survey at Edwards AFB

Tetra Tech performed the first ever survey for large mammals at Edwards Air Force Base, a 301,000-acre facility in the Mojave Desert of southern California, to determine the relative abundance of large mammal species and identify any patterns of seasonal distribution or habitat use. ..... More

Ecological Surveys of Naval Air Station Lemoore

This project inventoried the plant and wildlife communities on Naval Air Station Lemoore, located in the Central Valley of California, and provided detailed interpretation of results of the ecological surveys, and identified use of the Station by threatened and endangered species. NAS Lemoore consis ..... More

Ecological Surveys of Naval Air Station Fallon, Nevada

This study mapped and characterized plant and animal (vertebrate) communities present on 115,000 acres of land in the western Great Basin Desert for incorporation into a GIS display. 45 upland plant community types were provisionally defined and mapped on the basis of Natural Resource Conservation S ..... More

Survey of Sensitive Bird Species in the Vicinity of a Proposed Power Line Corridor in the State of Oregon

Tetra Tech was contracted to conduct a field survey designed to identify the distribution of northern goshawks and three-toed woodpeckers in a selected portion of a proposed power line corridor in the State of Oregon. These two species were identified by the Oregon Department of Fish and Wildlife as ..... More

Terrestrial Visual Encounter Survey (TVES) in the Vicinity of a Proposed Power Line Corridor in the State of Oregon

Tetra Tech was contracted by a power company to conduct a Terrestrial Visual Encounter Survey in a selected portion of a proposed power line corridor between Boardman, Oregon, and Hemingway, Idaho. Approximately 380 miles of proposed transmission line corridor (including alternatives) and 303 miles ..... More