RFP 25_111 Appendix A_Field Manual _ City Own.pdf

This is a Field Manual and City BMPs (Best Management Practices) document that is part of RFP 25-111 for MS4 Inspections issued by the City of Alpharetta, Georgia. The document provides detailed guidance for field technicians conducting infrastructure field inventory efforts of the city's stormwater system, including point features (structures with singular locations like drainage inlets and manholes) and linear features (pipes). The manual outlines specific procedures for documenting and assessing stormwater structures, including condition assessments that will be used for maintenance prioritization and Capital Improvement Program (CIP) projects as well as supporting the City's compliance with federal Clean Water Act NPDES Phase I MS4 Permit requirements.

The document includes comprehensive definitions and specifications for documenting structure types, materials, conditions, maintenance needs, and damage assessments. It provides a detailed inventory of City-owned BMPs as of 2019, including various types of ponds, bioretention facilities, enhanced swales, and stormceptors at multiple city facilities and parks. The manual includes a four-tier risk assessment system for prioritizing structures based on factors like proximity to buildings and major roads. Photographic examples are provided to help field technicians properly identify and assess different types of structural conditions, corrosion levels, and scour damage.