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ARMY INSTALLATION ID: CA921382084300

SIERRA ARMY DEPOT

herlong, California

Cost So Far

$101M

Money already spent on the evaluation and cleanup of hazardous sites.

Expected Additional Cost

$29.5M

The estimated amount of money needed for evaluation and cleanup of hazardous sites at this installation.

Expected Completion Date

2029

The date by which the DOD estimates cleanup of all sites will be complete. Long term monitoring may continue after this date.

65 Hazardous Sites

Below are the locations of hazardous sites associated with this military installation, according to the DOD. A site’s contamination may affect a much larger area, including public and private lands and the water supplies beneath them.

High Risk

Medium Risk

Low Risk

Risk Not Evaluated or Not Required

Response Complete

We haven't independently confirmed the location of every site. If you notice a site placed at the incorrect location, please contact us.

Not all sites in the DOD data include location information, so there may be sites listed below that are missing from the map. The risk level of a site refers to a relative risk assessment made by the DOD to prioritize the cleanup of sites.

Land Controls & Restrictions

Many sites have been declared “clean” by the DOD but are still not safe for people. This military installation is safe only with the following conditions in place: local use ordinances, fences, dig permits. see more » fences signs environmental covenants dig permits local use ordinances notations in master plan landfill restriction - restrict vehicular traffic prohibit human consumption of groundwater prohibit installation of drinking water well prohibit agricultural-irrigation-livestock use of groundwater restrict withdrawal or use of groundwater without treatment restrict land use - mitigation area(s) protection prohibit exposure to sediments landfill restriction - prohibit activities that would impact the landfill cap (or cover system) and drainage system landfill restriction - prohibit excavation on landfill cap or cover system landfill restriction - prohibit installation of utility system lines through the site landfill restriction - restrict access to the site landfill restriction - restrict construction of buildings that may interfere with landfill cap or cover system landfill restriction - restrict plantings that interfere landfill cap or cover system (roots that penetrate the cap or cover system) « see less

7 Active Sites

Sites where military cleanup actions are still ongoing. The risk level of a site refers to a relative risk assessment made by the DOD, which prioritizes the cleanup of sites that pose greatest threat to safety, human health, and the environment.

Site ID: SIAD-001-R-01

HONEY LAKE DEMOLITION RANGE A

Open Burn

Cost

$8.32M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jan 2017

This site is under ongoing monitoring until Dec 2046

Site ID: SIAD-002

DRMO TRENCH AREA

Disposal Pit and Dry Well

Cost

$2.94M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jan 2010

This site is under ongoing monitoring until Jun 2031

Site ID: CC-SIAD601

BUILDING 640 UNDERGROUND STORAGE TANKS

Underground Storage Tanks

Cost

$219K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2012

Site ID: SIAD-003

ABANDONED LANDFILL

Landfill

Cost

$3.33M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Mar 2015

This site is under ongoing monitoring until Sep 2045

Site ID: SIAD-001

TNT LEACHING BEDS

Disposal Pit and Dry Well

Cost

$2.42M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Nov 1998

Site ID: SIAD-014

BUILDING 210 AREA

Disposal Pit and Dry Well

Cost

$7.53M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Oct 2013

This site is under ongoing monitoring until Sep 2045

Site ID: SIAD-017-R-01

DRMO YARD

Mixed Waste Area

Cost

Unknown

Final Cleanup Action

Aug 2016

58 Inactive Sites

Sites where military cleanup actions are complete, according to the DOD. Note that this status does not necessarily mean the site is no longer hazardous, as many of these sites are put under long-term monitoring or other restrictions.

Site ID: CCPBA@SIAD

CR PBC CONTRACT SIERRA AD

Site Never Existed

Cost

Unknown

Final Cleanup Action

Dec 2012

Site ID: SIAD-002-R-01

.50 CAL RANGE

Firing Range

Cost

Unknown

Final Cleanup Action

May 2003

Site ID: SIAD-003-R-01

HONEY LAKE DEMOLITION RANGE B

Open Burn

Cost

Unknown

Final Cleanup Action

May 2003

Site ID: SIAD-004

CONSTRUCTION DEBRIS LANDFILL

Landfill

Cost

Unknown

Final Cleanup Action

Nov 1995

Site ID: SIAD-004-R-01

AERIAL P-12 GUNNERY RANGE

Firing Range

Cost

Unknown

Final Cleanup Action

Mar 2001

Site ID: SIAD-005

CHEMICAL BURIAL SITE

Landfill

Cost

Unknown

Final Cleanup Action

Nov 1995

Site ID: SIAD-007

EXISTING FIRE-FIGHTING TRAINING FACILITY

Fire/Crash Training Area

Cost

Unknown

Final Cleanup Action

Feb 2000

Site ID: SIAD-008

EXISTING SANITARY LANDFILL

Landfill

Cost

Unknown

Final Cleanup Action

Oct 1988

Site ID: SIAD-009-R-01

HAZARD CLASSIFICATION TEST SITE

Open Burn

Cost

Unknown

Final Cleanup Action

Dec 2012

This site is under ongoing monitoring until Jan 2042

Site ID: SIAD-010-R-01

HONEY LAKE DEMOLITION RANGE C

Unexploded Munitions and Ordnance Area

Cost

Unknown

Final Cleanup Action

Dec 2012

This site is under ongoing monitoring until Jan 2042

Site ID: SIAD-011-R-01

RIFLE RANGE D

Small Arms Range

Cost

Unknown

Final Cleanup Action

Dec 2005

Site ID: SIAD-012-R-01

LOWER BURNING GROUND

Open Burn

Cost

Unknown

Final Cleanup Action

Dec 2012

This site is under ongoing monitoring until Jan 2042

Site ID: SIAD-013-R-01

ALPHA TEAM TRAINING AREA

Explosive Ordnance Disposal Area

Cost

Unknown

Final Cleanup Action

Apr 2011

Site ID: SIAD-014-R-01

UPPER BURNING GROUND

Unexploded Munitions and Ordnance Area

Cost

Unknown

Final Cleanup Action

Dec 2012

This site is under ongoing monitoring until Jan 2042

Site ID: SIAD-025

"K" BLOCK AREA

Storage Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-015-R-01

BLM-ADMINISTERED PUBLIC LAND

Unexploded Munitions and Ordnance Area

Cost

Unknown

Final Cleanup Action

Dec 2012

This site is under ongoing monitoring until Jan 2042

Site ID: SIAD-016

LOWER BURNING GROUND

Burn Area

Cost

Unknown

Final Cleanup Action

Sep 1999

Site ID: SIAD-012

BLDG 1003 AREA

Chemical Disposal

Cost

Unknown

Final Cleanup Action

Nov 1995

Site ID: SIAD-013

OLD FIRE-FIGHTING TRAINING FACILITY

Fire/Crash Training Area

Cost

Unknown

Final Cleanup Action

Jan 1995

Site ID: SIAD-015

LARGE SEWAGE TREATMENT PONDS

Surface Impoundment/Lagoon

Cost

Unknown

Final Cleanup Action

Jun 1998

Site ID: SIAD-017

NIKE MISSILE FUEL DISPOSAL SITE A

Burn Area

Cost

Unknown

Final Cleanup Action

Jan 1995

Site ID: SIAD-016-R-01

GRAVEL PIT(STACY)

Explosive Ordnance Disposal Area

Cost

Unknown

Final Cleanup Action

Sep 2008

Site ID: SIAD-018

NIKE MISSILE FUEL DISPOSAL SITE B

Burn Area

Cost

Unknown

Final Cleanup Action

Jan 1995

Site ID: SIAD-019

TOXICS STORAGE AREA AT BLDG 578

Storage Area

Cost

Unknown

Final Cleanup Action

Jan 1995

Site ID: SIAD-021

EXISTING POPPING FURNACE

Explosive Ordnance Disposal Area

Cost

Unknown

Final Cleanup Action

Oct 1988

Site ID: SIAD-024

AMMUNITION HAZARD TEST SITE

Explosive Ordnance Disposal Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-026

AMMO MAINTENANCE (BLDG #640)

Contaminated Buildings

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-027

ABANDONED LANDFILL #2

Landfill

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-028

TRANSFORMERS-250 ON INSTALLATION

Spill Site Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-029

HOSPITAL (BLDG #150)

Contaminated Buildings

Cost

Unknown

Final Cleanup Action

Jun 1998

Site ID: SIAD-030

RIFLE/PISTOL RANGE

Unexploded Munitions and Ordnance Area

Cost

Unknown

Final Cleanup Action

Feb 1999

Site ID: SIAD-031

STORAGE SILOS

Storage Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-032

BUILDING # T-79

Storage Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-033

POSSIBLE BURIAL SITE

Landfill

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-035

STORAGE IGLOOS (8)

Storage Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-037

DIESEL SUMP AREA

Spill Site Area

Cost

Unknown

Final Cleanup Action

Nov 1996

Site ID: SIAD-038

NORTHWEST WAREHOUSE AREA

Spill Site Area

Cost

Unknown

Final Cleanup Action

Feb 1999

Site ID: SIAD-039

SMALL SEWAGE TREATMENT PONDS

Sewage Effluent Settling Ponds

Cost

Unknown

Final Cleanup Action

Aug 1999

Site ID: SIAD-040

PIT AT SOUTHEAST EDGE OF HONEY LAKE

Disposal Pit and Dry Well

Cost

Unknown

Final Cleanup Action

Jan 1995

Site ID: SIAD-042

SW-AREA

Surface Disposal Area

Cost

Unknown

Final Cleanup Action

Mar 1999

Site ID: SIAD-043

AIR STRIP REFUEL APRON

Spill Site Area

Cost

Unknown

Final Cleanup Action

Feb 1999

Site ID: SIAD-044

RANGE LEAD/DEBRIS AIRSTRIP AREA

Firing Range

Cost

Unknown

Final Cleanup Action

Aug 1998

Site ID: SIAD-056

STRATEGIC ORE PILES

Contaminated Soil Piles

Cost

Unknown

Final Cleanup Action

Feb 1999

Site ID: SIAD-057

INSTALLATION WIDE GW PLUME

Contaminated Ground Water

Cost

Unknown

Final Cleanup Action

Nov 1999

Site ID: SIAD-PBC

PBC CONTRACT SIERRA AD

Site Never Existed

Cost

Unknown

Final Cleanup Action

Sep 2008

Site ID: SIAD-009

AMMO DEMIL AND RENOVATION

Explosive Ordnance Disposal Area

Cost

Unknown

Final Cleanup Action

Nov 1995

Site ID: SIAD-011

DIESEL SPILL AREA

Spill Site Area

Cost

Unknown

Final Cleanup Action

May 2000

Site ID: SIAD-036

BLG 75 & 79 AREA

Spill Site Area

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-058

SIAD SPILL AREAS (FINAL ROD SITES)

Spill Site Area

Cost

Unknown

Final Cleanup Action

Sep 2011

Site ID: SIAD-022

OLD POPPING FURNACE

Explosive Ordnance Disposal Area

Cost

$665K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jul 2006

This site is under ongoing monitoring until Sep 2035

Site ID: SIAD-020

1960 DEMOLITION AREA

Explosive Ordnance Disposal Area

Cost

$218K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Dec 2005

This site is under ongoing monitoring until Jan 2035

Site ID: SIAD-006-R-01

.50 CALIBER FIRING RANGE

Unexploded Munitions and Ordnance Area

Cost

Unknown

Final Cleanup Action

Dec 2012

This site is under ongoing monitoring until Jan 2042

Site ID: SIAD-034

SEPTIC TANKS/LEACH FIELDS

Waste Lines

Cost

Unknown

Final Cleanup Action

Aug 1990

Site ID: SIAD-045

AIRSTRIP DIESEL SPILL

Spill Site Area

Cost

Unknown

Final Cleanup Action

Feb 1999

Site ID: SIAD-010

UPPER BURNING GROUND - HANSENS HOLE

Burn Area

Cost

$625K

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Jun 2006

This site is under ongoing monitoring until Sep 2045

Site ID: PBA@MR SIAD

MR PBC CONTRACT SIERRA AD

Site Never Existed

Cost

$4.1M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Dec 2012

This site is under ongoing monitoring until Jan 2045

Site ID: SIAD-007-R-01

1960 DEMOLITION AREA

Open Burn

Cost

Unknown

Final Cleanup Action

Dec 2012

This site is under ongoing monitoring until Jan 2042

Site ID: SIAD-008-R-01

BLOCK C

Unexploded Munitions and Ordnance Area

Cost

Unknown

Final Cleanup Action

Dec 2005

Update (Dec. 5, 2017): We have changed the source of the installation cost data after being notified by the Department of Defense that they erroneously reported their own cost figures on the DERP website. We are now displaying the costs the department says are the most accurate available, from the Pentagon’s DERP database that we received in a FOIA request.

Note: The risk level of a site refers to a relative risk assessment made by the DOD to prioritize the cleanup of sites.

Data: All data comes from the Defense Environmental Restoration Program and the U.S. Army Corps of Engineers, and will be released soon at the ProPublica Data Store. Read our methodology »