CATHODIC PROTECTION SYSTEM INSTALLATION, MAINTENANCE ANNUAL CATHODIC PROTECTION SURVEYS ANNUAL GAS LEAKAGE SURVEYS (FLAME IONIZATION GAS LEAK SURVEYS) UNDER GROUND GAS LEAK PINPOINTING (LEAK LOCATING) ANNUAL REGULATOR/RELIEF VALVE INSPECTIONS GAS SYSTEM MAPPING VALVE MAINTENANCE, INSPECTION AND REBUILDING ODORIZATION INSTALLATION & MAINTENANCE ODORIZATION SAMPLING ANNUAL DOT & EIA REPORTS UNACCOUNTED FOR GAS AUDITING AND REMEDIAL MEASURES OPERATION, MAINTENANCE & EMERGENCY PROCEDURAL MANUALS MAXIMUM ALLOWABLE PRESSURE ESTABLISHMENT GAS SYSTEM UPRATING CLASS LOCATION STUDY POLYETHYLENE PIPE FUSION AND FUSION CERTIFICATIONS PIPELINE PRESSURE TESTING