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MhR-iB-96 14.46 FROM, AGUIR~ENCINEER9 INC. ID, • PACE ,4 <br />Mr. end Mra. Tatum <br />March 1 B, t 996 <br />Pape 3 <br />There are relatively fresh cracks on the west wall of the meld's apartment. A diagonal crack <br />with a fresh spalNng of plaster eMends upward to the north from the north top corner of the <br />window. <br />Tha basement under the west end of the residence has teat-in-place concrete walls. We did <br />not observe slgnlflcsnt craake in the basement concrete walls or floors. Within thA basement <br />la s boiler that feeds a ataem heeler radiator system. There is a sump in the basement floor <br />with water standing 6` below the top of the floor slab. A sump pump has recently been <br />replaced by a gravity drain. <br />I inspected a crawl space utility access that extends easterly under the residence from the <br />boiler area. The native calls Into which the crawl apace was excavated consist of silty clay <br />with some fine to coarse medium gravels. The clayey surflclal soils tied minor vertical <br />ahrfnkege cracks. The clay itaeN was very dry and hard. The base of the exterior walls could <br />be observed at several locations. The adobe appeared to be resting on hand-placed stone <br />foundations cor>alsdng primarily of river run cobbles. I could not tell at any specific location <br />if I was looking et the bottom of the foundadon zone. <br />Tha realdence is located on a terrace that extends Into the Purgatolre River Valley. There is <br />a thin, eurflclal clay layer overlying river gravels at the realdence location. The colluviel clay <br />has eroded pff the hillside to the south. The groundwater table appears to he quite shallow. <br />A reladvely high water labia in the river terrace Is Indicated by natural springs that occur <br />immediately southeast of the realdence. In our opinion the water in the basement sump is a <br />netluel condition. <br />~~$ <br />In our opinion there are two types of cracks in the realdence which are: <br />1. Cracks normally found In an old adobe structure, and <br />2) Reledvely repent cracks, poaeibly ongoing, resuldng from a settlement incident that <br />involves the front and possibly other portions of the residence. <br />Manifestations of the settlement ere pronounced in the front, two-story portion; and at the <br />connection between the one and two-story portions. The freshness of some of the cracking <br />is Indicated by the separation of recently painted surfaces. <br />A modern coal mine operated by Basin Resources is extracting coal from a seam that underlies <br />the realdence. Ths mine entry Is approximately one mile asst of the residence. We <br />f:lpoi.ot.\2601 f401 hr ~- <br />