Registered small business
Sierra, Richard Chang
dba CHANG SIERRA & ASSOC · San Juan, PR · Established 2000
Capabilities
surveying,mapping,general asbuilt,utilities asbuilt,topographic,hidrographic,gps,stake-out,alta surveys, structural steel construction, metal roof construction, remodeler
Federal performance
- Awards
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- Obligated
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- Agencies served
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Registered NAICS codes
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Other designations
Self-certified: Small business
Previously certified: 8(a)