General Information Party ID Party Name Party Classification Mailing Address Work Phone Email/Website 640009 Columbia Square Development USLP Privately-Owned Business 440 15th Street San Diego, CA 92101 619-231-7072 null Related Places Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date 888774 1270 Columbia St at A St San Diego 9 Development Site, NEC Owner and Operator 06/13/2023 null Related Parties Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification 551293 Michael De Cotiis Person Legally Responsible Official 06/13/2023 null null Regulatory Measures(non-enforcement) Reg. Measure ID Regulatory Measure Type Region WDID Title Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date 453015 Enrollee - NPDES 9 9 000003888 Enrollee -NPDES R9-2015-0013 GW EX Columbia Square Development USLP Active NPDNONMUNIPRCS R9-2015-0013 06/16/2023 null Discharger 06/13/2023 null Violations within the past calendar year Violation ID Occurrence Date Violation Type Violation Description Violation Status Priority Source Facility Name Violated Reg. Meas. ID Violated Reg. Meas. Order No. Linked To Enf. 1123225 07/30/2023 Late Report Semiannual 2023 report missing Violation N Report 1270 Columbia St at A St 453015 R9-2015-0013 N 1123223 07/30/2023 Late Report Second quarter 2023 report missing Violation N Report 1270 Columbia St at A St 453015 R9-2015-0013 N 1123227 10/30/2023 Deficient Monitoring Third quarter 2023 report, did not test for hydrogen sulfide. Violation N Report 1270 Columbia St at A St 453015 R9-2015-0013 N Enforcement Actions Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status Regulatory Measures linked to Related Parties Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status