Supplemental Agreement No. 1 - The Troyer Group - Design work regarding LaSalle and Marquette Safe Routes to School

Home Browse Search

Mr. Kyle Silveus, P.E. September 27, 2016 The Troyer Group, Inc. Page 2 LaSalle Safe Routes to School Project — South Bend, IN Performing up to 25 exploratory test borings to a depth of 5 ft each. In addition, hand auger borings will be performed as deemed necessary. The actual location, depth, and number of borings will be dependent on the soil conditions encountered. Standard Penetration Test (SPT) sampling will be performed at 2'/2-ft intervals. We anticipate that the borings will be performed with truck -mounted equipment and backfilled at completion of the field work with auger cuttings and bentonite chips. EEI will locate the test borings using measurements from existing site features shown on the plans. We will also contact Indiana 811 to arrange an underground utility line location check. At this time, no pavement cores are planned. 2. Performing appropriate laboratory tests consistent with INDOT requirements including visual soil classification, hand penetrometer readings, pH, sulfate content, moisture content, grain size analysis, and Atterberg limit determinations; 3. Preparing a technical report which will include a summary of our findings and recommendations for geotechnical considerations regarding: a. Subgrade preparation and improvement, as necessary, for support of the sidewalk; b. Re -use of onsite soil for fill; and c. Potential construction problems due to the subsurface conditions encountered (e.g., soft subgrade difficulties, etc.). SCHEDULE We are typically able to mobilize to the site within two to three weeks of notice to proceed and coordination of our field activities with underground utility owners, the city, and OGE. The field work will require two to three days to complete. After the field work is completed, the laboratory testing could take up to two weeks to complete. We anticipate submitting a geotechnical report within two weeks after the laboratory work is completed. COST We propose to provide our services on a time and expense basis in accordance with the attached unit rates. With that, we estimate the total cost for completing the geotechnical services to be $14,600. Please recognize that the fee is based on the scope described herein and current INDOT guidelines. If any significant variations develop during the course of our evaluation, we will advise you so that our efforts can be effectively directed.