_GENERAL DOCUMENTS - C1981017 ‎(239)‎

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Name: Bid Documents ‎(IMP)‎ 1982 Technical Revisions Rock Tunnel Trash Pile
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

,r
SPECIFICATIONS*
1.0 SEDIMENTATION PONDS
1.1 GENERAL
1.1:1 SEDIMENTATION POND B SHALL BE CONSTRUCTED IN ACCORDANCE
WITH. THE CONSTRUCTION DRAWINGS AND SPECIFICATIONS,
'
1.2 SITE PREPARATION
1,2.1- THE POND AREA HAS BEEN STRIPPED OF TOPSOIL AND VEGETATION,
ANY SOFT OR WEAK SOILS 14HICH ARE LOCATED IN CRITICAL AREAS
OF THE PONDS AND 14H I CH COULD, 'IN THE OPINION OF THE
INSPECTING ENGINEER, INFLUENCE THE STABILITY OF THE PONDS,
SHALL BE REMOVED PRIOR TO CONSTRUCTION ,
1.3 CONSTRUCTION
1.3,1 EMBANKMENTS SHALL BE CONSTRUCTED FROM FINE-GRAINED ON-SITE
COLLUVIAL SOILS . NO ROCKS LARGER THAN 6-INCHES MAXIMUM
DIMENSION SHALL BE INCORPORATED INTO THE FILL. SOIL
MATERIALS SHALL BE SEGREGATED AS NEEDED TO MEET MATERIAL
SIZE AND COMPACTION REQUIREMENTS, NO ROOTS, STUMPS,
ORGANIC OR OTHERWISE DELETEREOUS MATERIALS SHALL BE
INCORPORATED INTO THE FILLS,
1.3.2 FILL SHALL BE PLACED IN HORIZONTAL LAYERS NOT EXCEEDING TWELVE
INCHES IN LOOSE THICKNESS AND- COMPACTED BY ROUTING THE CON-
STRUCTION EQUIPMENT UNIFORMLY OVER THE SURFACE OF THE FILL.
1.3.3 COMPACTED EMBANKMENTS SHALL HAVE A DRY DENSITY OF AT LEAST
95 % OF THE MAXIMUM DRY DENSITY AS DETERMINED BY THE AMERICAN
ASSOCIATION OF STATE HIGHWAYS AND TRANSPORTATION OFFICIALS
(AASHTO) SPECIFICATION T99-74 ("STANDARD PROCTOR") .
1.3,4 FILL PLACED AROUND PIPES, CULVERTS OR OTHER STRUCTURES IN-
CLUDED WITHIN THE EMBANKMENT SHALL MEET THE SAME PLACEMENT
AND COMPACTION CRITERIA AS ALL OTHER FILL,
1.3.5 THE DISTRIBUTION OF MATERIALS IN EMBANKMENTS SHALL BE SUCH
THAT THERE ARE NO LENSES, POCKETS OR STREAKS OF MATERIAL DIF-
FERING SUBSTANTIALLY FROM THE SURROUNDING FILL.
1.3. 6 FILL SHALL NOT BE PLACED ON FROZEN SURFACES, NOR SHOULD SNOW„
ICE, OR FROZEN MATERIAL BE INCORPORATED INTO THE FILL.
1.4 MAINTENANCE
1.4.1 SEDIMENTATION PONDS SHALL BE ROUTINELY MAINTAINED DURING THE
MINING OPERATIONS , VEGETATION GROWTH SHALL BE CUT WHERE NECES-
SARY TO FACILITATE INSPECTIONS AND REPAIRS. DITCHES AND SPILL-
WAYS SHALL BE CLEANED.
1.5 INSPECTIONS
1.5.1 ALL EMBANKMENT FILLS SHALL BE INSPECTED DURING CONSTRUCTION
AND OPERATION IN ACCORDANCE WITH THE SECTION 3 ,0 INSPECTIONS,
OF THESE SPECIFICATIONS.
*These sediment pond specifications were developed for
Mid-Continent by Geo-Hydro Consulting Company during the
summer of 1984 . See "as built" engineering drawings at Exhibit II-B-7-Att. 6-21 .