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<br />High Rock Road Waste & Recycling Center Improvements 33 30 00 - 3 <br />Orange County Solid Waste JULY 2021 <br />DAA PN R00592-213N <br /> <br />manholes shall show, upon examination from either end, a <br />reasonably full circle of light. <br /> <br />b) Manholes shall be true circles of acceptable brick or block <br />work, or for precast manhole, shall have no major defects. <br />Tops shall be properly placed, and castings securely in <br />place. Manholes shall show absolutely no evidence of <br />leakage through the walls or bottom. <br /> <br />2. Testing <br /> <br />a) Infiltration and exfiltration shall be kept to the minimum <br />amount possible. The allowable limit of groundwater <br />infiltration/exfiltration for any or more selections of sewer <br />with any type joint, including service lines, allowable under <br />these specifications (all sizes), shall not exceed 100 gallons <br />per 24 hours per mile of sewer line per inch of diameter. <br />b) Any line that does not meet this specification will be rejected <br />and must be repaired at the Contractor's expense. <br />c) No infiltration tests will be made until normal infiltration <br />conditions are established. Tests shall be made before <br />existing sewers or connections are made to new service <br />lines and shall be measured by means of a V-notch weir <br />inserted into the line at a manhole or built in a manhole. <br />These tests will be conducted over a period of time sufficient <br />to determine the correct rates of groundwater infiltration. <br />Weir measurements shall be made at points designated by <br />the Engineer along the completed pipelines, and at least one <br />measurement shall be made for each pipe segment between <br />manholes if requested by the Engineer. All expense of the <br />above test or tests shall be borne by the Contractor and be <br />included in the unit price bid per foot of sewer under each <br />respective size of sewer. When infiltration occurs in excess <br />of the specified amounts as hereinabove given, defective <br />pipe or joints shall be located and repaired at the expense of <br />the Contractor. If the defective portions cannot be so <br />located, the Contractor shall, at his own expense, remove <br />and reconstruct as much of the original work as necessary to <br />obtain a sewer within the allowable infiltration limits upon <br />retesting. <br />d) Where lines are above the ground water table, exfiltration <br />testing will be required. Also for lines that may be <br />seasonally under the ground water table or flood levels but, <br />due to dry conditions, upon completion of construction <br />normal infiltration conditions are not present (or the normal <br />wet weather ground water level is not present), the <br />DocuSign Envelope ID: BBF56E0A-3618-497E-AA70-92F097E8F598