Full Retention Petrol Interceptors used for high-risk areas e.g. petrol station forecourts This type of interceptor provides 100% coverage.

Bypass Petrol Interceptors used for low risk areas e.g. car parks. These are designed to cope with 10% of calculated peak storm conditions. Class 1.  Is used for low risk areas such as carparks & roadways where there is a risk of frequent oil contamination of surface water run off.

This takes into account the accumulation of silt and subsequent loss of capacity; the tank is therefore sized to allow for this. Class 2

Is used in applications where there is a lower quantity requirement applies.

Full Retention Petrol Interceptors

Used on larger low risk areas e.g  car parks Designed to cope with 10% of  calculated peak storm flows During full storm conditions any  pollutants are diluted Retained pollutants are left  undisturbed by storm flows as the  increased flows  bypass the chamber Drainage areas 1,667-11,111m  Class 1  This takes in to account the  accumulation of silt and subsequent  loss of capacity; the tank is therefore  sized to allow for this.  Available in Single stage,Two stage, Three stage  Designed in accordance with the recommendations of PPG3 Capacity from 1,000 litres to 3,500 litres (larger sizes available on request)

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