Clay,

 

The Million Air review letter is attached.  My comments require significant rework to the drainage calculations.  However, it doesn’t appear that the results will significantly impact
the final drainage design except for the detention basin orifice size.  I provided sample detention calculations for reference.

Please call my cell if you would like to discuss.

 

Thank you,

 

Chris Robinson, P.E.

Grantham & Associates

6570 Naaman Forest Blvd.

Suite #200, LB 2

Garland, TX 75044

972-864-2333 ext. 121

214-869-8912 cell

972-864-2334 fax