NPL Sites by Year of Proposed Listing Site1

Category2 Includes: 1981-1989 1990-1999 2000-2009 Grand Total

321 Lumber, wood, and paper bag products; wood 

preservers

58 4.9% 24 10.8% 12 5.2% 94 5.8%

324 Oil and gas refining 13 1.1% 4 1.8% 5 2.2% 22 1.3%

325 Chemicals/chemical waste recovery 136 11.5% 26 11.7% 19 8.3% 181 11.1%

331 Lead/lead manufacturing 0 0.0% 0 0.0% 2 0.9% 2 0.1%

332 Metal fabrication/finishing/coating and allied 

industries

68 5.8% 10 4.5% 13 5.7% 91 5.6%

334 Electronic/electrial equipment 53 4.5% 11 5.0% 7 3.1% 71 4.3%

562 Industrial waste facility (non-generator); 

municipal solid waste landfill; co-disposal 

landfills

421 35.6% 21 9.5% 23 10.0% 465 28.5%

812 Dry cleaners 8 0.7% 5 2.3% 6 2.6% 19 1.2%

AG Agricultural (e.g., grain elevator) 0 0.0% 2 0.9% 2 0.9% 4 0.2%

AT Automobiles/tires 1 0.1% 0 0.0% 0 0.0% 1 0.1%

BS Other (batteries) 1 0.1% 0 0.0% 0 0.0% 1 0.1%

CG Coal gasification 8 0.7% 4 1.8% 1 0.4% 13 0.8%

CO Other (stored salt cake fines/coal) 2 0.2% 0 0.0% 0 0.0% 2 0.1%

CP Coke production 3 0.3% 4 1.8% 1 0.4% 8 0.5%

CS Contaminated sediment with no ID source 4 0.3% 1 0.5% 6 2.6% 11 0.7%

DC Dust control 3 0.3% 0 0.0% 0 0.0% 3 0.2%

FT Fabrics/textile 4 0.3% 5 2.3% 3 1.3% 12 0.7%

GP GW plume with no ID source 66 5.6% 20 9.0% 27 11.8% 113 6.9%

ID Illegal disposal/dumping 37 3.1% 1 0.5% 6 2.6% 44 2.7%

MD Mine tailings disposal 8 0.7% 2 0.9% 1 0.4% 11 0.7%

ME Metals 14 1.2% 7 3.2% 30 13.1% 51 3.1%

NM Non-metal minerals 5 0.4% 1 0.5% 2 0.9% 8 0.5%

None None 0 0.0% 0 0.0% 2 0.9% 2 0.1%

OP Ordnance production 5 0.4% 2 0.9% 3 1.3% 10 0.6%

OT Other 52 4.4% 10 4.5% 12 5.2% 74 4.5%

PM Primary metals/mineral processing/smelter 21 1.8% 22 9.9% 10 4.4% 53 3.2%

PR Plastics and rubber products 11 0.9% 0 0.0% 2 0.9% 13 0.8%

PS Product storage/distribution 13 1.1% 2 0.9% 5 2.2% 20 1.2%

RA Radioactive products 12 1.0% 2 0.9% 2 0.9% 16 1.0%

RC Retail/commercial 2 0.2% 3 1.4% 1 0.4% 6 0.4%

RD Research development 5 0.4% 0 0.0% 0 0.0% 5 0.3%

REC Recycled oil/reclaim copper; solvent 

recovery/reclamation; reprocessed solvent; 

recovered metals; used oil recycling; 

drums/tanks recycling

104 8.8% 20 9.0% 14 6.1% 138 8.5%

RW Radioactive waste TSD (non-generator) 4 0.3% 0 0.0% 0 0.0% 4 0.2%

SE Spill or one-time event 6 0.5% 1 0.5% 3 1.3% 10 0.6%

TA Tanneries 3 0.3% 3 1.4% 2 0.9% 8 0.5%

TP Transportation (e.g., RR yards, airport) 10 0.8% 4 1.8% 2 0.9% 16 1.0%

TS Trucks/ships/trains related components 16 1.4% 5 2.3% 4 1.7% 25 1.5%

TW Treatment works/septic tanks/other sewage 

treatment

1 0.1% 0 0.0% 1 0.4% 2 0.1%

UK Unknown 4 0.3% 0 0.0% 0 0.0% 4 0.2%

Grand Total 1182 100.0% 222 100.0% 229 100.0% 1633 100.0%

Notes:

1. There are 1,495 NPL sites. Some sites have been placed in more than one category.

2. To the extent possible, Superfund sorted all NPL sites into three-digit NAICS based on their professional judgment. For those 

sites that they could not place under a NAICS code, they attempted to group them using loosely-based categories. The industries 

under this column are examples of the types of industries that were included under each category.

(Based on data provided by IEc as of October 7, 2009)
NPL Sites by Year of Proposed Listing Site1

(Based on data provided by IEc as of October 7, 2009)