【正文】 or the welding path is retraced to intermediate locations at least 10 feet in each direction from the location of the sample which failed the test, and a second sample is taken for an additional field test. If this second sample passes, the seam must be reconstructed between the location of the second test and the original sampled location. If the second sample fails, this process must be repeated.(5) All acceptable seams must lie between two locations where samples passed the test procedures found in subclause (4) of this clause and include one test location along the reconstructed seam.(6) Nondestructive testing of the geomembrane liner must be performed in accordance with clause (b) of this subparagraph.(e) Upon pletion of geomembrane seaming, postconstruction care of the installed geomembrane should mence and, at a minimum, include timely covering or temporary weighting using sandbags to prevent damage from wind uplift, construction, or other weather related damage.(l) Soil drainage layers. All soil material used in the primary and secondary leachate collection and removal systems of the landfill must conform to the following requirements:(1) Materials required. Soil materials used to construct a drainage layer must be designed to ensure proper hydraulic operation of the leachate collection and removal system pursuant to the provisions of subdivision (g) of this section. The soil drainage layer must be free of any organic material and have less than five percent of the material by weight pass the No. 200 sieve after placement. Soil material testing must be performed in accordance with paragraph (3) of this subdivision.(2) Construction requirements. The soil drainage layer must be constructed and graded in accordance with the requirements of the approved engineering plans, report, and specifications along with the following requirements:(i) The minimum thickness of the soil drainage layer in the primary leachate collection and removal system must be 24 inches and provide adequate physical protection to the underlying liner materials and leachate collection pipe network placed within the primary leachate collection and removal system, and have a minimum coefficient of permeability of 1 x 102 centimeters per second.(ii) The minimum thickness of the sec。s discretion。 a minimum of one test for each seaming machine operating on a given day。(3) inform the installer of any required repairs。 and(c) reports of tests conducted to verify the quality of the raw materials used to manufacture the geosynthetic material. At a minimum, the project engineer must review the following tests: for singlepoint stress rupture, tensile strength, tear and puncture resistance, and for the plete stress rupture curve for the geomembrane, using test methods acceptable to the department, to ensure proper geomembrane specification.(ii) The project engineer must certify through appropriate documentation that the quality control testing of any geosynthetic rolls fabricated into geomembrane sheets at the factory took place in accordance with the following requirements:(a) The geomembrane was continuously inspected for uniformity, damage, imperfections, holes, cracks, thin spots, and foreign materials. Additionally, the geomembrane liner must be inspected for tears, punctures, and blisters. Any imperfections must be immediately repaired and reinspected.(b) Nondestructive seam testing was performed on all fabricated seams over their full length using a test method acceptable to the department.(c) Destructive seam testing was performed on a minimum of two samples per geomembrane sheet. The samples must be taken from extra material at the beginning or end of sheet seams, such that the geomembrane sheet is not damaged and the sheet geometry is not altered. The size of the sample taken must be large enough to perform the required testing. A laboratory acceptable to the department must have performed the required testing on the samples taken. If a sample fails a destructive test, the entire seam length must be reconstructed or repaired using a method acceptable to the department, and retested using nondestructive seam testing over the full length of the seams using a test method acceptable to the department.(iii) Quality assurance testing performed in the field under the supervision of the project engineer must assure conformity of the geosynthetic installation with the engineering plans, reports, and specifications submitted in accordance with the following requirements:(a) During the construction phase, for each lot number of geomembrane material that arrives at the site, a sample should be taken for fingerprinting of the material. This sample should be archived at room temperature and in a light free environment for possible future testing and analysis. The geosynthetic material must be visually inspected for uniformity, damage, and imperfections. The geomembrane must be inspected for tears, punctures, or blisters. Any imperfections must be immediately repaired and reinspected.(b) The project engineer must certify that test seams are made at each start of work for each seaming crew, after every four hours of continuous seaming, every time seaming equipment is changed, when significant changes in geomembrane temperature are observed, or as additionally required in the approved specifications.(c) All field seams must be nondestructively tested in accordance with the procedures listed in this clause using a test method acceptable to the department. The project engineer or his/her designated representative must:(1) monitor all nondestructive testing。 and(x) the field crew foreman of the liner installer must have a documented minimum qualification of successful installation experience of at least 50 acres of previous landfill or parable geosynthetic systems, on a minimum of five different projects.(3) Certification requirements. The project engineer must include in the construction ce