Data dictionary
Field definitions supplied by the publishing agency in CKAN.
| Column | Type | Label | Description |
|---|---|---|---|
| key__i___iris__p___pprtv__o___opp__a___atsdr__c___cal_epa__x | text | Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; C = Cal EPA; X = APPENDIX PPRTV SCREEN (see FQ #31); H = HEAST; F = See FAQ; W = see user guide Section 2.3.5; E = see user guide Section 2.3.6; L = see user's guide Section 5.2; M = mutagen; S = see user's guide Section 5; V = volatile; R = RBA applied (see user's guide Section 5.10) ; c = cancer; n = noncancer; * = where: n SL < 100X c SL; ** = where n SL < 10X c SL; SSL values are based on DAF=1; m = Concentration may exceed ceiling limit (see user's guide Section 5.13); s = concentration may exceed Csat (see user's guide Section 5.12) | — |
| unsafe_ | text | Unnamed Column | — |
| unsafe__2 | text | Unnamed Column | — |
| unsafe__3 | text | Unnamed Column | — |
| unsafe__4 | text | Unnamed Column | — |
| unsafe__5 | text | Unnamed Column | — |
| unsafe__6 | text | Unnamed Column | — |
| unsafe__7 | text | Unnamed Column | — |
| unsafe__8 | text | Unnamed Column | — |
| unsafe__9 | text | Unnamed Column | — |
| unsafe__10 | text | Unnamed Column | — |
| unsafe__11 | text | Unnamed Column | — |
| unsafe__12 | text | Unnamed Column | — |
| unsafe__13 | text | Unnamed Column | — |
| unsafe__14 | text | Unnamed Column | — |
| unsafe__15 | text | Unnamed Column | — |
| unsafe__16 | text | Unnamed Column | — |
| unsafe__17 | text | Unnamed Column | — |
| unsafe__18 | text | Unnamed Column | — |
| unsafe__19 | text | Unnamed Column | — |
| unsafe__20 | text | Unnamed Column | — |
| unsafe__21 | text | Unnamed Column | — |
| unsafe__22 | text | Unnamed Column | — |
| unsafe__23 | text | Unnamed Column | — |
| unsafe__24 | text | Unnamed Column | — |
Resource details
| Format | XLSX |
|---|---|
| Size | 144 KB |
| Rows | 832 |
| Last updated | Sep 27, 2026 |
| Part of | US EPA Regional Screening Levels (RSLs) (November 2018) |
CKAN Data API
Access resource data through the CKAN DataStore API. The examples below use this resource's ID.
Endpoints
The Data API provides these actions. Creating or updating records requires appropriate permissions; the query actions read public DataStore records.
| Create | https://ckan.cdt.dev.datopian.com/api/3/action/datastore_create |
|---|---|
| Update / insert | https://ckan.cdt.dev.datopian.com/api/3/action/datastore_upsert |
| Query | https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search |
| Query via SQL | https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search_sql |
Query examples
"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=36f8049b-0342-4dbe-9ed2-78775751fe7b&limit=5""https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=36f8049b-0342-4dbe-9ed2-78775751fe7b&q=jones""https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search_sql?sql=SELECT%20%2A%20FROM%20%2236f8049b-0342-4dbe-9ed2-78775751fe7b%22%20LIMIT%205"SQL queries depend on whether SQL search is enabled by the portal.
OData query
Use the resource's OData URL and its field names for paging, selecting columns, or filtering rows.
ODATA_RESOURCE_URL?$top=5
ODATA_RESOURCE_URL?$skip=5&$top=5
ODATA_RESOURCE_URL?$select=FIELD_NAME&$filter=FIELD_NAME eq 'VALUE'Replace ODATA_RESOURCE_URL, FIELD_NAME, and VALUE with the details for the selected resource. See the OData query options guide (opens in a new tab) for more examples.
Use the API in code
JavaScript (JSONP)
var data = { resource_id: '36f8049b-0342-4dbe-9ed2-78775751fe7b', limit: 5, q: 'jones' };
$.ajax({
url: 'https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search',
data: data,
dataType: 'jsonp',
success: function (response) {
console.log(response.result.total, response.result.records);
}
});Python
import json
from urllib.request import urlopen
url = 'https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=36f8049b-0342-4dbe-9ed2-78775751fe7b&limit=5'
with urlopen(url) as response:
result = json.load(response)['result']
print(result['total'], result['records'])For parameters and response fields, see the CKAN DataStore documentation (opens in a new tab).