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� « - <br /> where groundwater � is penetrating the brick sewer shell. Such <br /> seepaqe indicates deteriorating mortar joints but at present does <br /> not appear to be extensive enough to develop voids outside the <br /> sewer due to migration of backfill material into the sewer. <br /> Twenty-one (21) lateral connections through the sewer were <br /> noted in various states of deterioration. Some of these appear <br /> active, some inactive. In several instances the seal between the <br /> connectinq pipe and the sewer shell has deteriorated or eroded <br /> away leaving voids around such pipe. Occasibnal voids can be <br /> noted extending outside the sewer wall . These are most likely <br /> areas for structural problems to develop if such voids are not <br /> sealed properly. <br /> Only two manholes were found along this 1100 ' of sewer, both <br /> of which are approximately 24" in diameter and both buried. A <br /> standard 4 ' diameter manhole fs needed in this section to allow <br /> for necessary maintenance or rehabilitation work. <br /> Photographs included in the Video inspection report depict <br /> certain typical instances of the deficiencies noted above. Of <br /> particular interest is photographs No. 3 & 4 taken between Man- <br /> holes B-2 a.nd B-1. This 24" vitrified tile connection is badly <br /> broken and in danger of collapse. Whether active or inactive it <br /> should be repaired and/or plugged and filled to avoid development <br /> of a major void adjacent to the Broadway Sewer. <br /> R70�3A B'3 17 of 29 <br />