HomeMy WebLinkAbout(0086) FS-20-067.copy.pdfm
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INTEROFFICE MEMO
Date: September 8, 2020
To: Dana Burghdoff, Assistant City Manager
From: Chris Harder, P.E., Water Director
Via: Doug Black, Senior Assistant City Attorney
Cynthia Garcia, Assistant Director, Purchasing
Subject: Supplement to January 27, 2020 Memorandum, City Secretary Contract Nos 55419 and
53549 for Emergency Sewer Work and Engineering Design for Sanitary Sewer Mains M-
182 and M-191 Crossing I.H. 820 -Emergency Response.
On January 16, 2020, Water Field Operations responded to two sanitary sewer overflows (SSOs) on M-191
which (along with M-181) cross underneath East Loop 820 near Richardson Street. Follow up investigation
revealed that both mains are severely deteriorated, which has significantly reduced capacity and hence the
overflow. Bypass pumping of the affected mains resolved the SSO, but remains on -going. To immediately
address this situation, Circle C Construction was engaged to repair the mains (CSC 55419: $880,000.00)
and Kimley-Horn and Associates, was engaged to provide the necessary design (CSC 53549: $120,000.00).
The initial design provided for boring across East Loop 820 without the need for permanent easements from
private property. However, due to conflict with existing storm drain structures on the west side of the
freeway easements must be obtained from two property owners. Easement acquisition has taken long than
anticipated but should be resolved soon with construction to commence shortly after. Additional design and
construction effort beyond the original scope are necessary to repair the sewer main and place it back in
service.
This memo is submitted to request authorization for emergency procurement service as outlined above at a
total cost of approximately $160,000.00 ($130,000.00 for construction and $30,000.00 for design). The
complete failure of bother sewer mains will have dire environmental consequences and raw wastewater
must be prevented from flowing into a stream that feeds Lake Arlington.
A change order and an amendment will be processed to the existing contracts with Circle C Construction
and Kimley-Horn and Associates, respectively, and actual costs will be reconciled at the end of the project.
APPROVED FOR EMERGENCY PROCUREMENT:
Recommended Chrslophet cr arCi5Fp8, 2020 10:59 CDli
Approved as to form and Legality:
Approve:
Approve:
Chris Harder, P.E., Director, Water Department
DB[nk (Sep B: 202015:23
Douglas W. Black, Sr. Assistant City Attorney
Cynthia Garcia, Assistant Director, Purchasing
Dana &randoE
D3i BJrghd.ff t1fep S, 202018:56 CDT)
Dana Burghdoff, Assistant City Manager