Mirela Grigorescu, Engineering Assistant II November 7, 2023 City of San Bernardino
Public Works Department-Engineering Division
201 North E Street, 2nd Floor
San Bernardino, CA 92418
Subject: Proposal to Provide Additional Work on The Mount Vernon Ave Storm Drain Improvement Project for Additional Potholing and Design Changes
Scope Items
1. Additional Potholing
2. Design Changes Due to Water Main Conflict and Preparation of DDW Exemption
Dear Mirela,
As requested we have pr epared a pr oposal to include additional potholing on Mount Vernon to determine the depth of the 24 ” Water Main crossing the proposed Storm Drain line. If it is determined that the water main imp acts the vertical alignment of the storm drain design then we will proceed with a redesign for the storm drain main. The redesign could involve a minor elevation adjustment or the design of a junction structure along with two smaller pipes or boxes to provide clearance over/under the 24” water main. We will also prepare the appl ication to DDW for the exemption due to separations between the water main and storm drain line.
We prepared this letter proposal in the amount of $19,612.50 in order to re-mobilize the potholing company and redesign of the plans to accommodate the changes.
Please review the attached fee and let us know if you have any questions.
Thank You,
Justin Smeets, PE
QA/QC
Manager Project Manager Project Engineer Subconsultants $150 $135 $115
Hours Hours Hours
Additional Potholing and Design Changes
A Additional Potholing 2 $10,522.50 $10,792.50
B Design Changes Due to Water Main Conflict and Preparation of DDW Exemption 4 20 48 $8,820.00 Additional Potholing and Design Changes 4 22 48 $10,522.50 $19,612.50 Onward Engineering Fee Proposal to Provide Additional Professional Engineering Services to the City of San Bernardino for the Mount Vernon Storm Drain Project
Additional Potholing and Design Changes
Task Project Tasks Total
Lump Sum