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EXCAVATION AND FILL MOTES: <br />1. ON-SITE MATERIAL SHALL BE ALLOWED AS BACKFILL <br />2. FILL SHALL BE PLACED IN LOOSE LIFTS NOT TO EXCEED 8 INCHES AND COMPACTED AS <br />SPECIFIED BY THE ENGINEER IN ACCORDANCE WITH HP STORM TABLE 3 FOR THE APPLICABLE <br />FILL HEIGHTS LISTED <br />3. VEGETATION AND TOPSOIL SHALL BE REMOVED FROM EXISTING SLOPES PRIOR TO FILL <br />PLACEMENT <br />4. EXISTING SLOPES SHALL BE BENCHED. THE BENCH SHALL BE SUFFICIENT WIDTH TO ALLOW <br />THE COMPACTION EQUIPMENT TO PASS OVER THE BOUNDARY BETWEEN THE NEW AND <br />EXISTING SURFACE <br />5. PRIOR TO CONSTRUCTING A NEW FILL ADJACENT TO AN EXISTING FILL SLOPE, ALL LOOSE <br />EARTH SHALL BE REMOVED FROM THE EXISTING SLOPE UNTIL A COMPACTED SURFACE HAS <br />BEEN EXPOSED <br />6. ALL EXCAVATIONS SHALL CONFORM TO APPLICABLE SAFETY REGULATIONS <br />CONCRETE NOTES: <br />1. CONCRETE <br />A. PROVIDE ALL NECESSARY LABOR, MATERIALS, AND OPERATIONS FOR PLACING, AND <br />FINISHING OF THE CONCRETE <br />B. ALL STRUCTURAL CONCRETE SHALL DEVELOP A MINIMUM COMPRESSIVE STRENGTH OF 3000 <br />PSI IN 28 DAYS. STRUCTURAL CONCRETE SHALL CONFORM TO THE REQUIREMENTS AND <br />SPECIFICATIONS PER AC1318-11 SPECIFICATIONS FOR STRUCTURAL CONCRETE OF BUILDINGS <br />C. WATER CEMENT RATIO SHALL NOT EXCEED 0.45 <br />D. ALL CONCRETE EXPOSED TO THE WEATHER SHALL BE AIR -ENTRAINED AT 6 PERCENT (+/- 1.5 <br />PERCENT) <br />E. CONCRETE SHALL NOT BE PLACED UNTIL ALL REINFORCING BARS, DOWELS, ANCHOR BOLTS, <br />PIPE SLEEVES, OR ANY OTHER EMBEDDED ITEMS HAVE BEEN PLACED OR SECURED <br />F. CURING - CONCRETE SHALL BE MOIST CURED BY MISTING OR SPRINKLING OR WITH CURING <br />COMPOUND AND THE SURFACE TEMPERATURE OF THE CONCRETE SHALL BE MAINTAINED <br />ABOVE 50° F FOR A MINIMUM OF 5 DAYS <br />2. CONCRETE REINFORCING <br />A. ALL BARS SHALL BE GRADE 60 (YIELD STRENGTH = 60 KSI) CONFORMING TO ASTM 615 OR <br />A706, UNLESS NOTED OTHERWISE <br />B. REINFORCING BARS SHALL NOT BE RE-BENT OR STRAIGHTENED IN THE FIELD IN A MANNER <br />THAT MAY WEAKEN OR DAMAGE THE STEEL. REINFORCING BARS ARE TO BE CLEAN OF RUST, <br />SCALING, MUD, SOIL, FORM OIL, OR ANY DELETERIOUS MATERIAL <br />C. ALL BAR SPLICES PER THE FOLLOWING TABLE, UNLESS NOTED OTHERWISE, AND SHALL BE <br />STAGGERED <br />REINFORCEMENT <br />SPLICE LENGTH <br />BAR SIZE <br />SPLICE LENGTH <br />#4 <br />20" <br />#5 <br />26„ <br />#6 <br />30„ <br />#7 <br />48" <br />CONCRETE DESIGN STRENGH = 3000 PSI (MIN) <br />D. THE FOLLOWING CLEARANCES SHALL BE USED PER CONDITIONS: <br />D.A. CONCRETE PLACED AGAINST EARTH 3 INCHES <br />D.1. CONCRETE PLACED IN FORMS AND EXPOSED TO THE WEATHER OR EARTH: <br />D.I.A. IF BARS ARE LARGER THAN #5 BARS 2 INCHES <br />D.I.B. IF BARS ARE SMALLER THAN #5 BARS 1-1/2 INCHES <br />E. ONLY REINFORCEMENT SPECIFICALLY IDENTIFIED AS WELDABLE MAY BE WELDED. ALL <br />WELDING OF REINFORCING BARS SHALL BE PERFORMED IN STRICT COMPLIANCE WITH THE <br />STRUCTURAL WELDING CODE FOR REINFORCING STEEL, ANSI/AWS D.1.4. <br />COLORADo " " F <br />5--22-2019 For DRMS Review- B EW -- <br />4-23-2019 Draft for internal review A EW --- <br />DATE ISSUE/REVISION No. DRW. APP. <br />HP STORM TRENCH INSTALLATION DETAIL <br />MIN. COVER TO <br />RIGID PAVEMENT, H <br />SPRINGLINE <br />4" FOR 12"-24" PIPE <br />6" FOR 30"-60" PIPE <br />MIN TRENCH WIDTH <br />(SEE TABLE) <br />MIN. COVER TO <br />FLEXIBLE PAVEMENT, H <br />BEDDING <br />SUITABLE <br />FOUNDATION <br />NOTES: <br />1. ALL PIPE SYSTEMS SHALL BE INSTALLED IN ACCORDANCE WITH ASTM D2321, "STANDARD PRACTICE FOR UNDERGROUND <br />INSTALLATION OF THERMOPLASTIC PIPE FOR SEWERS AND OTHER GRAVITY FLOW APPLICATIONS", LATEST ADDITION, <br />WITH THE EXCEPTION THAT THE INITIAL BACKFILL MAY EXTEND TO THE CROWN OF THE PIPE. SOIL CLASSIFICATIONS <br />ARE PER THE LATEST VERSION OF ASTM D232.1. CLASS IVB MATERIALS (MH, CH) AS DEFINED IN PREVIOUS VERSIONS OF <br />ASTM D2321 ARE NOT APPROPRIATE BACKFILL MATERIALS. <br />2. MEASURES SHOULD BE TAKEN TO PREVENT MIGRATION OF NATIVE FINES INTO BACKFILL MATERIAL, WHEN REQUIRED. <br />3. FOUNDATION: WHERE THE TRENCH BOTTOM IS UNSTABLE, THE CONTRACTOR SHALL EXCAVATE TO A DEPTH REQUIRED <br />BY THE ENGINEER AND REPLACE WITH SUITABLE MATERIAL AS SPECIFIED BY THE ENGINEER. AS AN ALTERNATIVE AND <br />AT THE DISCRETION OF THE DESIGN ENGINEER, THE TRENCH BOTTOM MAY BE STABILIZED USING A GEOTEXTILE MATERIAL. <br />4. BEDDING: SUITABLE MATERIAL SHALL BE CLASS 1, 11, 111, OR IV. THE CONTRACTOR SHALL PROVIDE DOCUMENTATION FOR <br />MATERIAL SPECIFICATION TO ENGINEER. COMPACTION SHALL BE SPECIFIED BY THE ENGINEER IN ACCORDANCE WITH <br />TABLE 3 FOR THE APPLICABLE FILL HEIGHTS LISTED. UNLESS OTHERWISE NOTED BY THE ENGINEER, MINIMUM BEDDING <br />THICKNESS SHALL BE 4" (100mm) FOR 12"-24" (300mm-600mm) DIAMETER PIPE; 6" (150mm) FOR 30"-60" (750mm-1500mm) <br />DIAMETER PIPE. THE MIDDLE 1/3 BENEATH THE PIPE INVERT SHALL BE LOOSELY PLACE. PLEASE NOTE, CLASS IV <br />MATERIAL HAS LIMITED APPLICATION AND CAN BE DIFFICULT TO PLACE AND COMPACT; USE ONLY WITH THE APPROVAL OF <br />A SOIL EXPERT. <br />5. INITIAL BACKFILL: SUITABLE MATERIAL SHALL BE CLASS 1, 11, III, OR IV IN THE PIPE ZONE EXTENDING TO THE CROWN OF THE <br />PIPE. THE CONTRACTOR SHALL PROVIDE DOCUMENTATION FOR MATERIAL SPECIFICATION TO ENGINEER. MATERIAL SHALL <br />BE INSTALLED AS REQUIRED IN ASTM D2321, LATEST EDITION. COMPACTION SHALL BE SPECIFIED BY THE ENGINEER IN <br />ACCORDANCE WITH TABLE 3 FOR THE APPLICABLE FILL HEIGHTS LISTED. PLEASE NOTE, CLASS IV MATERIAL HAS LIMITED <br />APPLICATION AND CAN BE DIFFICULT TO PLACE AND COMPACT; USE ONLY WITH THE APPROVAL OF A SOIL EXPERT. <br />6. MINIMUM COVER: MINIMUM COVER, H, IN NON -TRAFFIC APPLICATIONS (GRASS OR LANDSCAPE AREAS) IS 12" (300mm) FROM <br />THE TOP OF PIPE TO GROUND SURFACE. ADDITIONAL COVER MAY BE REQUIRED TO PREVENT FLOTATION. FOR TRAFFIC <br />APPLICATIONS; CLASS I OR 11 MATERIAL COMPACTED TO 90% SPD AND CLASS III COMPACTED TO 95% SPD IS REQUIRED. <br />FOR TRAFFIC APPLICATIONS, MINIMUM COVER, H, IS 12" (300mm) UP TO 48" (1200mm) DIAMETER PIPE AND 24" (600mm) OF <br />COVER FOR 60" (1500mm) DIAMETER PIPE, MEASURED FROM TOP OF PIPE TO BOTTOM OF FLEXIBLE PAVEMENT <br />OR TO TOP OF RIGID PAVEMENT. <br />LEGEND <br />ALIGNMENT <br />PIPE <br />[^] CONCRETE <br />ROCK <br />DISCLAIMER TEXT: <br />THIS DRAWING HAS BEEN PREPARED FOR THE USE OF ALEXCO WATER AND <br />ENVIRONMENT INC,'S CLIENT, COLORADO LEGACY LAND, LLC AND MAY NOT BE USED, <br />REPRODUCED OR RELIED UPON BY THIRD PARTIES, EXCEPT AS AGREED BY ALEXCO <br />WATER AND ENVIRONMENT INC, AND COLORADO LEGACY LAND, LLC AS REQUIRED BY <br />LAW OR FOR USE OF GOVERNMENTAL REVIEW AGENCIES, ALEXCO WATER AND <br />ENVIRONMENT INC. ACCEPTS NO RESPONSIBILITY, AND DENIES ANY LIABILITY <br />WHATSOEVER, TO ANY PARTY THAT MODIFIES THIS DRAWING WITHOUT ALEXCO WATER <br />AND ENVIRONMENT'S EXPRESS WRITTEN CONSENT <br />TABLE 1, RECOMMENDED MINIMUM TRENCH WIDTHS <br />TABLE 2, MINIMUM RECOMMENDED COVER BASED ON <br />VEHICLE LOADING CONDITIONS <br />SURFACE LIVE LOADING CONDITION <br />HEAVY CONSTRUCTION <br />PIPE DIAM. H-25 (75T AXLE LOAD) <br />121f - 4811 1211 <br />4811 <br />(300mm - 1200mm) 305mm) (1219mm <br />601' 2411 6011 <br />(1500mrn) (610mm (1 524m <br />* VEHICLES IN EXCESS OF 75T MAY REQUIRE ADDITIONAL COVER <br />TARLF 3_ MAXIMUM COVER FOR ADS HP STORM PIPE, ft <br />MIN. TRENCH <br />PIPE DIAM. <br />WIDTH <br />12" <br />3011 <br />300mm <br />762mm <br />15" <br />34'1 <br />375mm <br />864mm <br />1 811 <br />3911 <br />(450mm) <br />(991 mm <br />2411 <br />4811 <br />(600mm) <br />(1219mm) <br />3011 <br />5611 <br />(750mm) <br />(1422mm) <br />361, <br />6411 <br />900mm <br />1626mm <br />421' <br />7211 <br />1050mm <br />1829mm <br />4811 <br />8011 <br />1200mm <br />2032mm <br />601f <br />961 <br />1500mm <br />2438mm <br />TABLE 2, MINIMUM RECOMMENDED COVER BASED ON <br />VEHICLE LOADING CONDITIONS <br />SURFACE LIVE LOADING CONDITION <br />HEAVY CONSTRUCTION <br />PIPE DIAM. H-25 (75T AXLE LOAD) <br />121f - 4811 1211 <br />4811 <br />(300mm - 1200mm) 305mm) (1219mm <br />601' 2411 6011 <br />(1500mrn) (610mm (1 524m <br />* VEHICLES IN EXCESS OF 75T MAY REQUIRE ADDITIONAL COVER <br />TARLF 3_ MAXIMUM COVER FOR ADS HP STORM PIPE, ft <br />FILL HEIGHT TABLE GENERATED USING AASKM SLL 11UN I Z, LUAU <br />RESISTANCE FACTOR DESIGN (LRFD) PROCEDURE WITH THE FOLLOWING <br />ASSUMPTIONS: <br />NO HYDROSTATIC PRESSURE <br />UNIT WEIGHT OF SOIL (ys) = 120 PCF <br />ALEXCO <br />WAT <br />ENVIRONMENT <br />0 .L.cc� <br />J. <br />.cn 41234 rn: <br />S�S�ONA1-�� <br />NORTH WASTE ROCK PILE DIVERSION PIPE -NOTES SHEET 2 <br />HP STORM TRENCHING DETAIL RECEIVE13 <br />SCHWARTZWALDER MINE, MAY 2 4 2018 <br />GOLDEN COLORADO <br />TECHNICAL REVISION #28 om"OFMouWuflpN <br />MINE LAND RECLAMATION PERMIT M-19ITTMpm <br />REVISION: B <br />DRAWN BY: EW <br />5-22-19 <br />DESIGNED BY: SL <br />PROJECT No.: SCHWARTZ. <br />REVIEWED BY: SL <br />A S I <br />CL S <br />CLASS I1 <br />CLASS III <br />CLASS <br />IV <br />PIPE DIA <br />COMPACTED <br />95% <br />90% <br />1 <br />85% <br />95% <br />90% <br />95% <br />1211 <br />41 <br />28 <br />21 <br />16 <br />20 <br />16 <br />16 <br />(300mm) <br />(12.5m) <br />(8.5m) <br />(6.4m) <br />(4.9m) <br />(6.1,m)- <br />(4.9m) <br />(4.9m) <br />1 511 <br />42 <br />29 <br />21 <br />16 <br />21 <br />16 <br />16 <br />(375mm) <br />(12.8m) <br />(8.8m) <br />(6.4m) <br />(4.9m) <br />(6.4m) <br />(4.9m) <br />(4.9m) <br />18" <br />44 <br />30 <br />21 <br />16 <br />22 <br />17 <br />16 <br />(450mm) <br />(13.4m) <br />(9.1 m) <br />(6.4m) <br />(4.9m) <br />(6.7m) <br />(5.2m) <br />(4.9m) <br />2411 <br />37 <br />26 <br />18 <br />14 <br />19 <br />14 <br />14 <br />(600mm) <br />(11.3m) <br />(7.9m) <br />(5.5m) <br />(4.3m) <br />(5.8m) <br />(4.3m) <br />(4.3m) <br />3011 <br />39 <br />27 <br />19 <br />14 <br />19 <br />15 <br />14 <br />(750mm) <br />(11.9m) <br />(8.2m) <br />(5.8m) <br />(4.3m) <br />(5.8m) <br />(4.6m) <br />(4.3m) <br />3611 <br />28 <br />20 <br />14 <br />10 <br />14 <br />11 <br />10 <br />(900mm) <br />(8.5m) <br />(6.1 m) <br />(4.3m) <br />(3.4m) <br />(4.3m) <br />(3.4m) <br />(3.0m) <br />42f1 <br />30 <br />21 <br />14 <br />19 <br />15 <br />11 <br />10 <br />(1050mm) <br />(9.1 m) <br />(6.4m) <br />(4.3m) <br />(3.0m) <br />(4.6m) <br />(3.4m) <br />(3.0m) <br />48M1 <br />29 <br />20 <br />14 <br />9 <br />14 <br />10 <br />10 <br />(1200mm) <br />(8.8m) <br />(6.1 m) <br />(4.3m) <br />(2.7m) <br />(4.3m) <br />(3.0m) <br />(3.0m) <br />60" <br />29 <br />20 <br />14 <br />9 <br />14 <br />10 <br />9 <br />(1500mm) <br />(8.8m) <br />(6.1m) <br />(4.3m) <br />(2.7m) <br />(4.3m) <br />(3.0m) <br />t (2.7m} <br />FILL HEIGHT TABLE GENERATED USING AASKM SLL 11UN I Z, LUAU <br />RESISTANCE FACTOR DESIGN (LRFD) PROCEDURE WITH THE FOLLOWING <br />ASSUMPTIONS: <br />NO HYDROSTATIC PRESSURE <br />UNIT WEIGHT OF SOIL (ys) = 120 PCF <br />ALEXCO <br />WAT <br />ENVIRONMENT <br />0 .L.cc� <br />J. <br />.cn 41234 rn: <br />S�S�ONA1-�� <br />NORTH WASTE ROCK PILE DIVERSION PIPE -NOTES SHEET 2 <br />HP STORM TRENCHING DETAIL RECEIVE13 <br />SCHWARTZWALDER MINE, MAY 2 4 2018 <br />GOLDEN COLORADO <br />TECHNICAL REVISION #28 om"OFMouWuflpN <br />MINE LAND RECLAMATION PERMIT M-19ITTMpm <br />REVISION: B <br />DRAWN BY: EW <br />5-22-19 <br />DESIGNED BY: SL <br />PROJECT No.: SCHWARTZ. <br />REVIEWED BY: SL <br />