Connectivity checks will appear after hierarchy selection
Step 2: Quantitative Standards (S2, S3, S4)
S2 - Interception (from Calculator 3)
S3 - Peak Flow Control (Calculators 1 & 2)
S4 - Water Quality Assessment (CIRIA C753 Simple Index Approach)
Based on CIRIA C753 Tables 26.2 (Hazard Indices) and 26.3 (Mitigation Indices)
Pollution Hazard Indices (CIRIA C753 Table 26.2)
CIRIA C753 Table 26.2 does not list this land use as a single row, so no published triplet applies directly (commercial yards / delivery areas are 0.7 / 0.6 / 0.7; high-hazard industrial and lorry areas are 0.8 / 0.8 / 0.9). Enter the appropriate hazard indices manually for each sub-catchment.
Step 3: Qualitative Standards (S5, S6, S7)
S5 - Amenity & Recreational Use
Assess each item as Compliant, Non-compliant, or N/A. Add notes to explain your assessment.
S6 - Biodiversity
Assess each item as Compliant, Non-compliant, or N/A. Add notes to explain your assessment.
S7 - Maintenance & Construction Design
Assess each item as Compliant, Non-compliant, or N/A. Add notes to explain your assessment.
Step 4: Compliance Summary Dashboard
Master Compliance Table (All 7 Standards)
Standard
Title
Status
Evidence
Notes
Overall Site Compliance Statement
Auto-generated: Assessment results will appear here once you complete the form.
Non-Compliance Items & Recommended Actions
No non-compliance items identified.
Treatment Train Summary
Source → [Components based on your hierarchy selection] → Outfall
This diagram represents the complete drainage path from source to final discharge destination.
Step 5: PDF Export & Submission
Generate Professional PDF Report
This will create a comprehensive multi-page PDF document suitable for planning submission. The report includes all assessments, compliance findings, and evidence.
PDF Report Contents:
Cover page with project details
Executive summary and overall compliance
S1 Assessment: Drainage hierarchy with justifications