Ground-Truthing Validation to Assess the Effect of Facility Locational Error on Cumulative Impacts Screening Tools

Table 1

Location errors discovered in field validation in Arvin, Huron, and Stockton by facility type. Note: this is a summary of the number of facilities reported in the standard regulatory or business/facility databases (uncorrected) and facilities found during ground-truth validation (corrected), as well as the number of facilities located inaccurately by at least 100 meters for each cumulative impacts analysis site.

Facility type	Arvin			Huron			Stockton
	Uncorrected	Corrected	>100 m location error	Uncorrected	Corrected	>100 m location error	Uncorrected	Corrected	>100 m location error
CARB-FOI	—	—	—	5	5	2	3	3	0
AB2588 Air Toxics “Hot Spots”	18	10	5	31	27	13	40	32	1
DTSC Hazardous Waste	—	—	—	—	—	—	—	—	—
Auto paint/body	1	1	0	—	—	—	4	3	1
Gas stations	5	5	0	7	10	0	9	6	0
Sensitive land uses	7	7	0	4	4	4	5	5	0