California

Trinity guides California facilities through the complexities of air quality permitting and compliance under the Clean Air Act, California Code of Regulations, and the 35 local air district rules. Our team manages permit applicability, Authority to Construct (ATC)/Permit to Construct (PTC), Permit to Operate (PTO), Title V applications, CEQA/NEPA assessments, and compliance audits. We also provide strategic advising, agency negotiation, and support for emission inventories, emission reduction credits (ERCs), control technology evaluations, and enforcement actions to help clients achieve and maintain regulatory compliance.

Trinity applies advanced air dispersion modeling techniques, including AERMOD and HARP, to support regulatory submissions and health risk assessments required by California air districts and the California Air Resources Board (CARB). Our services cover air dispersion, accidental release, explosion, and risk analyses, as well as AB 2588, AB 617, Proposition 65, mobile source modeling, and photochemical analyses. We ensure clients meet all local, state, and federal requirements for air quality impact evaluation and reporting.

We provide support for hazardous materials and waste management, including HMBP preparation, EPCRA reporting, hazardous waste permitting, and compliance with Cal/EPA, DTSC, and CUPA requirements. Trinity assists with waste determinations, facility permits, audits, and closure plans, ensuring full regulatory compliance and risk reduction. Our team also delivers training, recordkeeping, and agency coordination for seamless operations.

Trinity supports California land use projects with environmental planning, CEQA/NEPA review, and permitting, ensuring compliance with state and local requirements for a wide range of development projects. Our geoscience team provides environmental site assessments, groundwater and hydrogeological evaluations, remediation planning, and mineral resource assessments to facilitate regulatory-compliant land development. By integrating technical expertise in geoscience with land use planning, Trinity delivers tailored solutions for site selection, permitting, and sustainable project execution.

Trinity provides accredited verification and consulting services for greenhouse gas (GHG) emissions, climate disclosure, and sustainability programs in California. Our team supports clients with AB 32 MRR Cal-eGRRT/GRRT, Cap & Invest (previously C&T), LCFS, offset, credit strategy, and enterprise-wide carbon footprinting. We also develop and audit ISO 14001/18001/50001 management systems, life cycle assessments, and environmental product declarations to help organizations achieve their sustainability goals and regulatory requirements.

Trinity assists facilities in designing and implementing stormwater and wastewater management programs to comply with SWRCB Indusrial and Construction stormwater premit, WDR, NPDES, and local water quality regulations. Services include NOI, NONA, SWPPP development, monitoring, reporting, and integration of stormwater and wastewater programs for industrial, municipal, and commercial clients. We ensure compliance with TMDL, recycled water, and water reuse requirements.

Trinity provides comprehensive support for air quality compliance through source test auditing and CEMS/PEMS for California facilities. Our team reviews test protocols and results to ensure proper methods and regulatory compliance with California-specific requirements, including CARB-approved source test methods, South Coast AQMD and Bay Area AQMD protocols, and local air district guidelines. We assist with CEMS selection, installation, certification, QAP, and ongoing operation, streamlining applications and QA/QC plans to meet CARB and district standards, and ensuring facilities maintain accurate, reliable emissions data for regulatory reporting and permit compliance.

Trinity implements ambient air monitoring programs tailored to California Air Resources Board (CARB) and local air district requirements, including ambient and fenceline monitoring for regulatory compliance and community needs. Our turnkey solutions cover station siting, equipment installation, calibration, and operation for criteria pollutants and meteorological parameters, with real-time data management and reporting through secure dashboards. We also support community monitoring programs, deploy advanced fenceline technologies for AB 617 compliance, COGR, SCAQMD Rule 1180, SB 1137, SJVAPCD Rule 4460 and conduct performance audits using EPA and NIST-traceable standards to ensure precision, accuracy, and regulatory reliability for industrial, municipal, and commercial operations.