NPL Sites by Year of Proposed Listing Site1

Category2,3 Includes: 1981-1989 1990-1999 2000-2009 Grand Total

321 Lumber, wood, and paper bag products; wood 

preservers

58 5.1% 24 12.6% 12 6.4% 94 6.2%

324 Oil and gas refining 13 1.1% 4 2.1% 5 2.7% 22 1.4%

325 Chemicals/chemical waste recovery 136 11.9% 26 13.6% 19 10.1% 181 11.9%

331 Lead/lead manufacturing 0 0.0% 0 0.0% 2 1.1% 2 0.1%

332 Metal fabrication/finishing/coating and allied 

industries

68 6.0% 10 5.2% 13 6.9% 91 6.0%

334 Electronic/electrial equipment 53 4.7% 11 5.8% 7 3.7% 71 4.7%

562 Industrial waste facility (non-generator); 

municipal solid waste landfill; co-disposal 

landfills

421 37.0% 21 11.0% 23 12.2% 465 30.6%

812 Dry cleaners 8 0.7% 5 2.6% 6 3.2% 19 1.3%

AG Agricultural (e.g., grain elevator) 0 0.0% 2 1.0% 2 1.1% 4 0.3%

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 2.1% 1 0.5% 13 0.9%

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 2.1% 1 0.5% 8 0.5%

CS Contaminated sediment with no ID source 4 0.4% 1 0.5% 6 3.2% 11 0.7%

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

FT Fabrics/textile 4 0.4% 5 2.6% 3 1.6% 12 0.8%

GP GW plume with no ID source 66 5.8% 20 10.5% 27 14.4% 113 7.4%

ID Illegal disposal/dumping 37 3.2% 1 0.5% 6 3.2% 44 2.9%

NM Non-metal minerals 5 0.4% 1 0.5% 2 1.1% 8 0.5%

None None 0 0.0% 0 0.0% 2 1.1% 2 0.1%

OP Ordnance production 5 0.4% 2 1.0% 3 1.6% 10 0.7%

OT Other 52 4.6% 10 5.2% 12 6.4% 74 4.9%

PR Plastics and rubber products 11 1.0% 0 0.0% 2 1.1% 13 0.9%

PS Product storage/distribution 13 1.1% 2 1.0% 5 2.7% 20 1.3%

RA Radioactive products 12 1.1% 2 1.0% 2 1.1% 16 1.1%

RC Retail/commercial 2 0.2% 3 1.6% 1 0.5% 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 9.1% 20 10.5% 14 7.4% 138 9.1%

RW Radioactive waste TSD (non-generator) 4 0.4% 0 0.0% 0 0.0% 4 0.3%

SE Spill or one-time event 6 0.5% 1 0.5% 3 1.6% 10 0.7%

TA Tanneries 3 0.3% 3 1.6% 2 1.1% 8 0.5%

TP Transportation (e.g., RR yards, airport) 10 0.9% 4 2.1% 2 1.1% 16 1.1%

TS Trucks/ships/trains related components 16 1.4% 5 2.6% 4 2.1% 25 1.6%

TW Treatment works/septic tanks/other sewage 

treatment

1 0.1% 0 0.0% 1 0.5% 2 0.1%

UK Unknown 4 0.4% 0 0.0% 0 0.0% 4 0.3%

Grand Total 1139 100.0% 191 100.0% 188 100.0% 1518 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.

3. Three categories have been excluded from this table: MD (mine tailings disposal); ME (metals); and PM (primary metals/mineral 

processing/smelter)

(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)