Associated Earth Sciences Inc. 7/19/2016

b. Provide recommendations for earthwork and site preparation including suitability of on- site soils for reuse in trench backfill, placement and compaction of trench backfill, and mitigation of unsuitable soil conditions. Include an evaluation of the effects of weather and/or construction equipment on site soils. c. Perform engineering analyses and provide conclusions and recommendations for conventional trenching techniques including the following: • Geotechnical parameters for trench shoring design including lateral pressures, and partial shoring considerations; • Excavation and temporary slope considerations; • Pipe support including bedding and backfilling; and • Construction dewatering considerations including depth to groundwater observed during drilling and estimated permeability coefficients based on laboratory sieve analyses. • Provide recommendations for erosion control during construction. Task 5-Geotechnical Communications, Design Report and Meetings a. Provide a summary of subsurface conditions encountered as information becomes available. b. Prepare a written report presenting conclusions and recommendations along with supporting boring logs, laboratory data, and other appropriate figures. c. Coordinate boring activities with City's survey consultant to allow consultant time to field locate borings and ground elevations and order utility locates. Geotechnical Consultant agrees to provide the following services based upon the RFP: A. Geotechnical Engineering Services Assumptions 1. Associated Earth Sciences, Inc (AESI), will contract the services of an Exploration drilling contractor to obtain soil and shallow groundwater data (if encountered) by auger borings (maximum depth of 10 feet, up to 7 borings, approximately every other block). 2. AESI will apply for the necessary ROW permits prior to the exploration phase. 3. AESI will only contact the 1-800 utility locate service for locates in the ROW. 4. AESI will utilize a subcontractor to provide the needed signage and traffic control for each boring location. S. No installations piezometers will be made in the borings. 6. Up to two (2) samples will be tested for corrosion potential according to the DIPRA standard. 7. Laboratory testing will include: • 3 moisture content • 3 sieve analysis • 2 moisture density relationship 8. AESI will provide a soils report that includes boring logs, site plan, laboratory test results (moisture content, maximum density, particle size distribution, corrosion 3