Material Disposal Areas (MDAs) Planned Remediation End State

(Source: The Proposed Risk-Based End-State Vision for Completion of the EM Cleanup Mission at Los Alamos National Laboratory, LA-UR-03-8254, November 3, 2003.)

Watershed	MDA	Current Description	End State
Los Alamos/Pueblo	A	1.8-acre site; two 50,000-gal. underground tanks and 3 pits	Cap & monitoring in place/Industrial use/Transferred to NNSA
	B	6-acre site; primarily solid waste in shallow trenches; some chemical waste	Cap & monitoring in place/Industrial use/Transferred to NNSA
	T	3.5-acre site; four radioactive liquid waste absorption beds and cemented-waste shafts	Cap & monitoring in place/Industrial use/Transferred to NNSA
	U	1.3-acre site; two absorption beds and associated sump	Cap & monitoring in place/Industrial use/Transferred to NNSA
	V	1-acre site; three liquid absorption beds for outflow from radioactive laundry facility	Cap & monitoring in place/Industrial use/Transferred to NNSA
Mortandad	C	11.8-acre site; 7 pits and 108 shafts with solid radioactive waste	Cap & monitoring in place/Industrial use/Transferred to NNSA
	W	Two 4-in. diameter, 125-ft. long stainless steel tubes suspended inside 8-in. diameter carbon steel-cased wells; tubes backfilled under pressure with nitrogen and sealed; 150L of liquid sodium reactor coolant contaminated with Pu-239 and associated fission products	Transferred to NNSA
	X	Buried LAPRE II reactor, decommissioned in 1959; site remediated in 1991	Transferred to NNSA
Pajarito	F	Classified trash	Cap & monitoring in place/Industrial use/Transferred to NNSA
	G	65-acre site; 34 disposal pits, 174 disposal shafts with solid radioactive waste, 4 trenches with transuranic waste	Cap & monitoring in place/Industrial use/Transferred to NNSA
	H	0.3-acre site; 9 shafts with radioactive and classified waste	Cap & monitoring in place/Industrial use/Transferred to NNSA
	I	2.65-acre; solid waste landfill	Transferred to NNSA
	L	2.5-acre site; 1 pit, 34 shafts and 3 surface impoundments for liquid chemical waste	Cap & monitoring in place/Industrial use/Transferred to NNSA
	M	Surface trash disposal site	Transferred to NNSA
	Q	Naval guns and other metallic trash	Cap & monitoring in place/Industrial use/Transferred to NNSA
Chaquehui	D	Two underground concrete chambers for HE	Transferred to NNSA
	E	Underground chamber plus 6 waste disposal pits; spent projectiles, U, Be	Cap & monitoring in place/Industrial use/Transferred to NNSA
	K	Septic tank, sump, roof drain and outfall; contaminants include tritium	Transferred to NNSA
Water/Canon de Valle	N	<1 acre; construction and office debris in shallow trenches	Remediated to industrial and/or recreational use standards/Transferred to NNSA
	P	Surface site; HE burn-ground residues	Transferred to NNSA
	R	Surface site; HE burn-ground and associated HE residues	Remediated to industrial and/or recreational use standards/Transferred to NNSA
	Z	Approximately 2,000 yd of uranium-contaminated firing site debris	Remediated to industrial and/or recreational use standards/Transferred to NNSA
	AA	13-ft deep trenches with burned and unburned firing site debris	Remediated to industrial and/or recreational use standards/Transferred to NNSA
Ancho	Y	5 shallow trenches with construction, office, and firing-site debris	Remediated to industrial and/or recreational use standards/Transferred to NNSA
	AB	Multiple 80-ft deep shafts with residue from noncritical nuclear weapons safety experiments	Cap & monitoring in place, based on industrial use/Transferred to NNSA