PT-1 (cont.)

PT-1 (cont.)

380260 280 300 320 390370270 290 310 330 350 360340Sta 250(in feet)

520400 420 440 460 530510390 410 430 450 470 490 500480

Iron oxidationstaining. Lateral

spreadingContinuousbedding

Fracture:Iron oxidationstaining.

Concrete pipeGround surface

Secondary seismic:No offset of silt.

Fracture:N30E/90

Clay bed Silt clasts

9 Sandy silt (ML)/Ash; medium stiff, pale yellow (5Y 8/3)dry to moist, thinly laminated to laminated.

11

10

Clay balls Clay lensesPipe fragment

af

7A

Silty sand (SM); medium dense, light gray (5Y 7/1) dry-moist,fine to medium, laminated to thinly bedded, abundant biotite,minor iron oxidation staining.

Silty clay (CL); medium stiff, light brownish gray (10YR 6/2)moist.

10

11

N58E

0 10

GRAPHIC SCALE(in feet)

HORIZONTAL = VERITCAL

LAW

Trench Logs: PT-1 cont.

Jan. 2007 389-06

The Villas

PLATE 3

PETRA GEOTECHNICAL, INC.12225 WORLD TRADE DRIVE, SUITE P

SAN DIEGO, CALIFORNIA 92128PHONE: (858) 485-5530

DATE: J.N.:

DWG BY: SCALE: See above

COSTA MESA MURRIETA PALM DESERT SAN DIEGO SANTA CLARITA