2008-406 - Laserfiche WebLink

Home Browse Search

WO# 4 CR-510 From 61 st Drive to Shore Lane This proposal presents our approach to the project and includes an estimate of field exploration and laboratory testing quantities as well as engineering resources needed for the evaluation of the data obtained and preparation of a report. _PROPOSED M n SERVICES Ardaman & Associates , Inc. will provide geotechnical engineering services for this phase of the Project including a review of existing information , field reconnaissance , Standard Penetration Test( SPT) borings , auger borings and manual muck probes . The scope of service for this phase of the proposed roadway improvements will include the following : 1 . Perform up to 45 auger borings to an approximate depth of 6 feet within the two areas alon the roadway where organic (A-8) soils were encountered during our previous exploration . g 2 . Perform manual muck probes within the roadside canals to be reclaimed (or filled )between approximate Station No 's . 281 +00 to 295 + 00 and between approximate Station No 's . 322 + 00 to 330 +00 . The purpose of the muck probes is to preliminarily measure the depth of soft organic soils and/or sediment , if present within the existing canals . These probes are performed by hand -pushing 1 -inch diameter steel rod into the ground until penetration is refused . Generally, the probes can be pushed through very soft organic and/or clayey soils , and terminate upon encountering sandy soils or relatively stiff clays . Probes can also be terminated on obstructions such as roots or buried debris . It is possible that probes could terminate under one of the above scenarios , while muck could still exist below the probed depth . 3 . Perform up to 20 auger borings to an approximate depth of 6 feet between approximate Station No 's . 281 +50 to 310+00 , between approximate Station No 's . 319 + 00 to 362+ 00 and between approximate Station No 's . 750+00 to 771 + 50 to further evaluate our normal seasonal high groundwater table estimate . 4 . Perform up to two Standard Penetration Test (SPT) borings to an approximate depth of 35 feet in close proximity to the proposed slope cut located adjacent to the Red Stick property. We note that the existing slope to be analyzed was observed to be densely wooded and inaccessible to our truck-mounted drilling equipment. Therefore , this proposal includes an estimated cost for limited land clearing . The clearing is intended to be limited in scope , and will be performed to provide access to proposed drilling locations within the slope . We note that Ardaman & Associates , Inc . cannot be held responsible for potential damage to wetland and/or upland ( protected ) vegetation , or endangered and/or threatened species of animals . If such concerns exist on the site , we recommend an experienced environmental specialist be present during clearing activities . The client is responsible for coordinating permission to access the site with the current property owner. 5 . Obtain soil samples from the SPT and auger borings for laboratory testing . This includes etc . routine classification tests including standard sieve analysis , Atterberg Limits , organic contents , 6 . Prepare a report including all data developed during the laboratory and field programs , and our recommendations relative to soil and groundwater parameters to be used in the design . In addition , we will analyze the global stability of the proposed slope cut (for its proposed geometry and encountered soil conditions ) against failure by circular are , infinite slope or sliding block type failure . We understand that for this purpose , slope cross sections F : Tublic Works\Capital Projects\CR 510\CR 510 & US- 1 _IRC-0514\Ardaman & Associates\CR-510 WO#4 Ardaman 11 -20-08 .doc