STROM WATER network Design and calculation

Job ID: 36411343

Budget: $10 – $30 USD

I need engineer experience in the field of hydraulics and environment
I already did the design but it need to be 1-adjust to engineering guide requirement
and 2-provide calculation report to confirm that storm water ponds sufficient to collect the first 30mm of rainfall

I attached engineering manual guide line
and old desine
comment provided from owner