New Britain herald., 1916-04-18

watershed, amounting to about l,0OO acres' was included in the searches at the town clerks office, and prepara- l tlons nave been made for making the l surveys
 Proposed Tunnel.
 A proposed line 4,7O0 feet in length was staked out and an attempt made to locate the surface of the rock along this line, by means of a wash l drlll outfit. Information was obtained to show that there was rock at least o,ooO feet out of the total 4,700 feet. ] on account of the nature of the ma- l terial encountered in the balance of l the distance on the north end of the proposed line, it was decided that 1t 1 was useless to try to find the surfa 1 Of the rock on account of the large number of boulders and the wash boring outfit was given up. on December 9, 1915 a contract was signed with the c. L. Grant com Dany Inc, of Hartford, Conn.,, for drilling the required number of holes st the north end of the tunnel line, to find the surface of the rock. A well drill machine was set up and the progress of the work to date is as follows:
 At station 3 plus 50 (from the north end of the proposed tunneD a hole was driven to the tunnel grade or 8 depth of 95.4 feet, the material encountered was sand, gravel and boulders to a depth of 72 feet, hard pan in the next feet and the balance was sand, gravel and boul- ders. No rock, except boulders, was struck in this hole.
 The location of the second hole is at station plus 65 feet (from the north end of the proposed tunnel) At the present time the contractor is working on this hole, with the follow ing results so far: The first IA feet, sand, gravel and boulders were en- countered, from this point to a point 55 feet further below solid rock was encountered. At the present time the contractor is drilling in rock ap- rroximately 69 feet below the sur face of the ground, the grade of the tunnel at this station is 103 feet below the surface of the ground, and il is natural to expect that solid rock will be encountered the balance Of the distance to the tunnel grade. Water under pressure was struck in an open Joint in the rock, 50 feet below the surface of the ground
 It is planned to have the contrac- ton finish the driving of the second hole, through the rock to the tunnel grade and then move the machine to about station and drive one more hole there, right down to tthe tunnel grade at that station
 High Service Control.
 Tn aY,fo hor from the overflow pipe at the High service reservoir to the bank of the west canal, at the end of Wooster street, and thence to the spillway of Shuttle Meadow reservoir. A small topographic map was prepared, showing the proposed site for a stand pipe on the canal bank.
 The above gives a synopsis of the work accomplished during the past year by tn eengineering department
 I would recommend that the prop erty surveys on the Whigville water shed be completed at once and also that permanent posts be placed to mark the lines between the city's property and adjacent property on the upper Burlington watershed.
 <ho oooI ciS Illo JOIluS Has Dcei completed, under contract with C. l.. Grant company, another and more complete report will be made to your Eoard, giving detailed estimates of cost and the most feasible method of getting the water from Burlington brook to the Whigville reservoir, and further recommendations made at that time.
 Chemists Report.
 We hand you herewith a summary of the analyses which we have made of the city water supply during the past year. As will be seen from the following table, the supply has been in excellent condition throughout the year. The color has averaged three on the Cobalt platinum scale. There have been no odors noticed with the exception of one analysis. The tur- bidity has averaged three, and the sediment slight.
 The average of the weekly bac- teriological samples is 65 bacteria per cubic centimeter. There has been no fermentation in dextrose broth or positive test for bacilli coli in any of the samples.
 The tables showing the chemical