Report Engineers I Planners I Surveyors
PACE
Services An Engineering
RECFIUFD
i?CD [IOCK OCT 232014
October 23, 2014 7 0 5 w "or�
DAQ7C' t 1' CIlYOf ii j
�� °AJ►fftArr?hurco.
0aIQ3
City of Tigard
George Heimos
13125 SW Hall Blvd.
Tigard, OR 97223
Subject: Red Rock Business Center- Nyloplastic Catch Basins
PACE Job No. 13833
Dear George:
As request, this letter is addressing the substitution of Steel Lynch style catch basins with Nyloplastic
(Blue Brute C-905 PVC) catch basins. All four(4) proposed catch basin are going to be substituted with
the Nyloplastic CB's. The contractor will place the concrete collar, as shown in the manufacturer's
installation instructions, around each catch basin. I have also instructed the contractor to provide 12" of
clearance from the rim/grate to the outlet pipe. This will be consistent with the elevations shown on the
Utility Sheet (C 5.0). The manufacturer constructs and delivers the catch basin to the job site with a 2' ±
clearance from the grate to the outlet. This allows the contractor to trim off the excess and match the
plans.
Sincerely,
PACE Engineers, Inc. ���NG Ss
Si0
ct 1 758PE •
dpir
}
Andrew Reiter, PE, PLS } 9 OREGON �° }
Project Engineer �1,~�-4qy 23 '`� <Q
O•9FW A R���
• (EXPIRATION DATE 12-31-ZD4'
cc: File - t
Attachments
Manufacturer's Installation Detail (Dwg. No. 7001-100-192)
PACE Engineers,Inc.
5000 Meadows Road I Suite 345
P:\P13\13833-Doug Fry-Red Rock Phase III\Word Processing\City of Tigard-Substitution of Catch Basins 2014-10-23.doc Lake Oswego,Oregon 97035-2232
p 503 597.3222 I f 503 597.7655
www.paceengrs.com