1. Chemical Sites in Louisiana with an active Project

Projects cannot be filtered by state or NAICS, so start from Sites and follow located_at.

# 1. Chemical Sites in Louisiana; repeat with next_cursor until null
GET /v1/search?naics=325&state=LA&label=site&limit=100
 
# 2. Each Site's Projects (skip Sites where edge_counts["located_at:in"] is 0)
GET /v1/sites/site_4716cb782b285d45a11ba85a64289ba0/edges?label=located_at&direction=in
#  -> prj_4f1f55da60225abc99bec70e0320e218, prj_fc606a24d8b25cad937c7b72f9babcf7
 
# 3. Keep Projects that are planned, permitting, permitted or under construction
GET /v1/projects/prj_fc606a24d8b25cad937c7b72f9babcf7
#  -> status "permitted", last_event_date "2026-02-24", undertaken_by FIRESTONE POLYMERS, LLC
 
# 4. The events behind the Project
GET /v1/projects/prj_fc606a24d8b25cad937c7b72f9babcf7/timeline

2. A permit number to the Site's violations

# 1. Permit number -> Permit, then its Site
GET /v1/resolve?kind=permit&key=US-AL-01:210-0005
GET /v1/permits/pmt_a3faf0a577d054b48056180d19adb9fe
 
# 2. Check the Site: name, address, NAICS, operating status
GET /v1/sites/site_4ed23885f4755785acba58fa0ab0a4db
 
# 3. Violations and enforcement since 2020, newest first
GET /v1/sites/site_4ed23885f4755785acba58fa0ab0a4db/timeline?since=2020-01-01&event_type=violation&event_type=enforcement&limit=50
#  -> 2025-06-12 violation, 2024-09-09 enforcement ($200,000)

3. Who operates a Site

GET /v1/sites/site_4716cb782b285d45a11ba85a64289ba0/edges?label=operates&label=owns
#  -> operates FIRESTONE POLYMERS, LLC  confidence 1.0  hard_key
#     owns     FIRESTONE POLYMERS, LLC  confidence 1.0  hard_key

A hard_key link at 1.0 is the strongest answer the API gives. Check a splink or geo link, or several owners with near-identical names, before you rely on it.

Recipes

1. Chemical Sites in Louisiana with an active Project

2. A permit number to the Site's violations

3. Who operates a Site

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