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20-01 Variolite Street Reconstruction <br />Ramsey, Minnesota <br />NTI Project No. 19. MSP09109.000 <br />Table 1B: Pavement and Subgrade Summary' <br />Variolite Street Northwest <br />Bituminous Apparent <br />Pavement Aggregate Base Fill Subgrade Native Subgrade <br />Boring No. Thickness' (inches) Thickness3 (inches) Material' Material <br />SB-345 <br />SB-355 <br />1.5 20.0 SM SM <br />7.5 5.0 SM, SP SM <br />SB-36 <br />4.5 3.0 <br />SB-37 <br />4.0 4.0 <br />SP-SM SP, SM <br />SP-SM SP, SP-SM <br />SB-38 4.0 18.0 None Observed SP, SM <br />SB-395 <br />5.5 5.0 SM SP-SM, SM, ML, Pt <br />SB-405 <br />4.0 10.0 <br />SP-SM, SM SP-SM <br />SB-41 <br />6.0 5.0 SP-SM SP, SM, SP-SM <br />SB-42 <br />3.5 4.0 SM SP-SM, ML <br />SB-435 <br />3.0 6.5 <br />SP-SM SP-SM, ML <br />SB-445 <br />6.5 6.0 SM SM, Pt <br />SB-45 <br />6.5 6.5 SM SP <br />SB-46 <br />6.5 7.0 SM SP-SM, SP <br />SB-47 <br />5.0 3.0 SM SM, SP <br />SB-48 <br />7.5 7.0 SM SP <br />SB-49 <br />3.0 4.0 <br />SP-SM SM, ML <br />SB-505 <br />6.0 8.0 SM SP, SC <br />SB-51 <br />6.0 4.5 <br />SP-SM, SM SP <br />SB-52 <br />5.5 5.0 SP, SM, SP-SM, CL <br />SP, SP-SM <br />SB-53 <br />7.0 7.0 <br />SP-SM SP <br />SB-54 <br />6.5 6.0 SP-SM SP <br />SB-55 <br />6.5 8.0 SP-SM SP <br />SB-565 <br />6.0 8.0 SM SP, SM, SP-SM <br />SB-575 <br />6.0 7.0 <br />SP-SM SP <br />1. Table summary is a generalization of subsurface conditions at the individual soil boring locations only. They may not <br />reflect variations in subsurface strata occurring on site between boring locations. The general geologic origin of <br />retained soil samples is listed on the boring logs. <br />2. Measured thickness of the pavement core. <br />3. Apparent aggregate base thickness, at time of our fieldwork, by visual inspection only. The classification is not meant <br />to confer conformance with DOT specifications. <br />4. Undocumented fill soils. <br />5. Pavement core thickness may not be representative due to crumbling during coring process. <br />1615T Avenue Northwest - Borings SB-58 through SB-61 <br />Bituminous pavement thickness in this area ranged from approximately 3.0 to 3.5 inches at the boring <br />locations. Apparent aggregate base thickness ranged from approximately 8.0 to 18.0 inches. Apparent <br />previously placed fill soils generally consisting of poorly graded sand with silt (SP-SM) and silty sand (SM) <br />were encountered to depths ranging from approximately 1.5 to 4.0 feet below the top of pavement. <br />Varying amounts of gravel, bituminous pieces, and organic materials were occasionally encountered <br />within the fill materials. <br />Page 5 of 10 <br />