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HomeMy WebLinkAbout85-0812 Otter Creek CO2 v).. eBla . , , ,......, _.. ELGIN, ILLINOIS OTTER CREEK DETENTION AREA Change Order No.2 SCOPE. This Change Order No.2 covers the installation of 2 six inch (6 ) valves and 2 eight inch (8") valves with valve boxes, corporation connections and disinfection of watermains by T&W Edmier Corporation, 249 West Lake Street, Elmhurst, IL 60126. REASON FOR CHANGE The existing watermains on Second and Maple Streets need to be lowered in order to construct the detention facility. At the time of designing the project it was felt that the new watermain could be installed deeper than the present depth and connections at the two ends could be made in relatively short time without inconveniencing the residents except for a short period of time, two to three hours. It was thought that the new line could be disinfected by chlorine tablets. Later on it was realized that it would not be possible to make the end connections in a short length of time. Also the disin- fection with chlorine tablets without flushing the new lines is rather risky. There is a possibility that it would be a health hazard to the residents. A better, safer and easier construction procedure is to include two valves on each line, disinfect the watermains, flush them and test the water before the water from the new watermain is used by the residents. SUMMARY OF CHANGES IN CONTRACT AMOUNT. The amount of the contract will be revised as follows: ADD Installation of 2 six inch (6") valves, $2,560.00.. 2 eight inch (8") valves, corporations and disinfection of new watermains By reason of this Change Order No.2, the contract cost for Otter Creek Detention Area shall be increased in the amount of Two Thousand Five Hundred Sixty and no/100 Dollars ($2,560.00) , the total contract with T&W Edmier Corporation being Six Hundred Eighteen Thousand Four Hundred Thirty Six and 88/100 Dollars. ($618,436.88)s. OTHER CONTRACT PROVISIONS. All other contract provisions shall remain the same. 14114r° Agreed to this 1.24" day of 1- , 1985. Recommended: Approved: ENGINEERING DIVISION CITY OF ELGIN 1. y . the F'rst By: . -1., ( f,2c.e2e1 . rPart (Ow e, 0 I Date: July 16, 1985 By: illm&A Jli 'I 31 Title: fi Accepted: T&W EDMIER CORPORATION Party of the Second Part (Contractor) By: (74„....„ A) Pi.......__.__ Title: PRESIDENT • r July 17, 1985 MEMORANDUM TO: Bob Malm, Acting City .Manager FROM: Syed Ally, Civil Engineer II RE: Otter Creek Detention Area Attached is Change Order No.2 for Otter Creek Detention Area. It consists of the addition of two 6 inch valves with valve boxes, two 8 inch valve with valve boxes, disinfecting the new sections of watermains on Second and Maple Streets and two corporation connections for flushing the new mains. At the time we designed the project, we felt that the installation of the deeper new mains could be accomplished without the extra valves. After further consultation with the contractor and Water Department and consider- ing the risk factor, we feel the need for the additional valves and flushing the new main before putting it in service. In order to keep the costs down, valve boxes instead of valve vaults will be installed. The additional cost is $2,560.00 which brings the total contract amount with T&W Edmier Corporation to $618,436.88. We request City Council approval . Ar SA:do Attachment , - ELGIN, ILLINOIS OTTER CREEK DETENTION AREA Change Order No.2 SCOPE. This Change Order No.2 covers the installation of 2 six inch (6") valves and 2 eight inch (8") valves with valve boxes, corporation connections and disinfection of watermains by T&W Edmier Corporation, 249 West Lake Street, Elmhurst, IL 60126. REASON FOR CHANGE The existing watermains on Second and Maple Streets need to be lowered in order to construct the detention facility. At the time of designing the project it was felt that the nea, watermain could be installed deeper than the present depth and connections at the two ends could be made in relatively short time without inconveniencing the residents except for a short period of time, two to three hours. It was thought that the new line could be disinfected by chlorine tablets. Later on it was realized that it would not be possible to make the end connections in a short length of time. Also the disin- fection with chlorine tablets without flushing the new lines is rather risky. There is a possibility that it would be a healtn hazard to the residents. A better,safer and easier construction procedure is to include t,:o valves on each line, disinfect the watermains, flush them and test the water before the water from the new watermain is used by the residents. SUMMARY OF CHANGES IN CONTRACT AMOUNT. The amount of the contraet .ill be revised as follows: ADD Installation of 2 six inch (6") valves, $2,560.00 2 eight inch (8") valves, corporations and disinfection of new watermains By reason of this Change Order No.2, the contract cost for Otter Creek Detention Area shall be increased in the amount of Two Thousand Five Hundred Sixty and no/100 Dollars ($2,560.00), the total contract with TSW Edmier Corporation being Six Hundred Eighteen Thousand Four Hundred Thirty Six and 88/100 Dollars. ($618,436.88) OTHER CONTRACT PROVISIONS. All other contract provisions shall remain the same. Agreed to this day of , 1985. Recommended: Approved: ENGINEERING DIVISION CITY OF ELGIN Party of the First By: Part (O,mer) Date: July 16, 1985 By: Title: Accepted: T&W EDMIER CORPORATION Party of the Second Part (Contractor) By: Title: