Loading...
HomeMy WebLinkAboutSWP2703375.5LO ti M M N 0. H U LIJ 0 w a F_ Z W n W 0 w (L W H U) z W Z Q J W J a ca i SURFACE WATER DRAINAGE NOTES AND SPECIFICATIONS: 1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE -CONSTRUCTION MEETING MUST BE HELD WITH THE CITY OF RENTON PLAN REVIEWER. 2. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE LATEST EDITION OF THE STANDARD SPECIFICATIONS FOR ROAD, BRIDGE AND MUNICIPAL CONSTRUCTION PREPARED BY WSDOT AND THE AMERICAN PUBLIC WORKS ASSOCIATION (APWA), AS APPROVED AND MODIFIED BY THE CITY OF RENTON PUBLIC WORKS DEPAR I MENT. 3. THE SURFACE WATER DRAINAGE SYSTEM SHALL BE CONSTRUCTED ACCORDING TO THE APPROVED PLANS, WHICH ARE ON FILE IN THE PUBLIC WORKS DEPARTMENT. ANY DEVIATION FROM THE APPROVED PLANS WILL REQUIRE WRITTEN APPROVAL FROM THE CITY OF RENTON PUBLIC WORKS DEPARTMENT, SURFACE WATER UTILITY SECTION. 4. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS. 5. DATUM SHALL BE NAVD 88 UNLESS OTHERWISE APPROVED BY THE CITY OF RENTON PUBLIC WORKS DEPARTMENT. REFERENCE BENCHMARK AND ELEVATIONS ARE NOTED ON THE PLANS. 6. ALL SEDIMENTATION/EROSION FACILITIES MUST BE IN OPERATION PRIOR TO CLEARING AND BUILDING CONSTRUCTION, AND THEY MUST BE SATISFACTORILY MAINTAINED UNTIL CONSTRUCTION IS COMPLETED AND THE POTENTIAL FOR ON -SITE EROSION HAS PASSED. 7. ALL RETENTION/DETENTION FACILITIES MUST BE INSTALLED AND IN OPERATION PRIOR TO OR IN CONJUNCTION WITH ALL CONSTRUCTION ACTIVITY UNLESS OTHERWISE APPROVED BY THE PUBLIC WORKS DEPARTMENT, SURFACE WATER UTILITY SECTION. 8. GRASS SEED MAY BE APPLIED BY HYDROSEEDING. THE GRASS SEED MIXTURE, OTHER THAN CITY OF RENTON APPROVED STANDARD MIXES, SHALL BE SUBMITTED BY A LANDSCAPE ARCHITECT AND APPROVED BY THE PUBLIC WORKS DEPARTMENT, SURFACE WATER UTILITY SECTION. 9. ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION IN ACCORDANCE WITH SECTION 7-02.3(1) OF THE CURRENT STATE OF WASHINGTON STANDARD SPECIFICATION FOR ROAD AND BRIDGE CONSTRUCTION. THIS SHALL INCLUDE NECESSARY LEVELING OF THE TRENCH BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL, AS WELL AS PLACEMENT AND COMPACTION OF REQUIRED BEDDING MATERIAL, TO UNIFORM GRADE SO THAT THE ENTIRE LENGTH OF THE PIPE WILL BE SUPPORTED ON A UNIFORMLY DENSE, UNYIELDING BASE. ALL PIPE BEDDING SHALL BE APWA CLASS "C", WITH THE EXCEPT"ON OF PVC PIPE. ALL TRENCH BACKFILL SHALL BE COMPACTED TO MINIMUM 95% FOR PAVEMENT AND STRUCTURAL FILL AND 90% OTHERWISE PER ASTM D-1557-70. PEA GRAVEL BEDDING SHALL BE 6 INCHES OVER AND UNDER PVC PIPE. . . .. . . .. .. ... .= - 11. STRUCTURES SHALL . - INSIDE • t • • WITHIN 10 FEET OF THE SPRING LINE OF ANY STORM NOT BE OR BETTER PERMITTED DRAINAGE PIPE, OR 15 FEET FROM THE TOP OF ANY CHANNEL BANK. NMI 13. OPEN CUT ROAD CROSSINGS THROUGH EXISTING PUBLIC RIGHT OF WAY WILL NOT BE ALLOWED UNLESS SPECIFICALLY APPROVED BY CITY OF RENTON PLANNING/BUILDING/PUBLIC WORKS ADMINISTRATOR. 14. ROCK FOR EROSION PROTECTION OF ROADSIDE DITCHES, WHERE REQUIRED, SHALL BE OF SOUND QUARRY ROCK PLACED TO A DEPTH OF ONE (1) FOOT AND MUST MEET THE FOLLOWING SPECIFICATIONS: 4 - 8 INCH ROCK / 40 - 70% PASSING; 2 - 4 INCH ROCK / 30 - 40% PASSING; AND LESS THAN 2 INCH ROCK / 10 - 20% PASSING. ..Iral ■- .. -■ ■ .. .. . • • - ■ a - r - . ■ - �\��\�Iii7�s■ a -til�t.7a\\>••�-\�i=\Tir . N-A . . . .. .. .. .. . . ..mimawramom • • • s= •r c= • . • 'r • • NONE 0-11 0111011 .. 17. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE SAFEGUARD, SAFETY DEVICES, PROTECTIVE EQUIPMENT, FLAGGERS, AND ANY OTHER NEEDED ACTIONS TO PROTECT THE LIFE, HEALTH, AND SAFETY OF THE PUBLIC, AND TO PROTECT PROPERTY IN CONNECTION WITH THE PERFORMANCE OF WORK COVERED BY THE CONTRACT. ANY WORK WITHIN THE TRAVELED RIGHT OF WAY THAT MAY INTERRUPT NORMAL TRAFFIC FLOW SHALL REQUIRE A TRAFFIC CONTROL PLAN APPROVE BY THE PUBLIC WORKS DEPARTMENT, TRANSPORTATION SYSTEMS DIVISION. ALL SECTIONS OF THE WSDOT STANDARD SPECIFICATIONS 1-07-23 TRAFFIC CONTROL SHALL APPLY. V H E wnsNl�rl �1 12636 Q �EGISTER��'� EXPIRES: 1231 FRYAR AVENUE SUMNER, WASHINGTON 98390 T.253.863.5128 F.253.863.0946 www,parametr x.com f��S1�••,�1�r 1� IlR�P�LL�'t11 BV'------ ---- -- -- Datel-------- Dote'______-- 3V1---------------- Date'_ - ---- Da te! EROSION CONTROL NOTES: 1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE -CONSTRUCTION MEETING MUST BE HELD WITH THE CITY OF RENTON, PUBLIC WORKS DESIGN ENGINEER. 2. ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED ON THE PLAN(S) SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING CONSTRUCTION. 3. ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN OPERATION PRIOR TO LAND CLEARING AND/OR CONSTRUCTION TO ENSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE NATURAL DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT CLEARING AND/OR CONSTRUCTION IS COMPLETE AND POTENTIAL FOR ON -SITE EROSION HAS PASSED. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO EROSION/SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE PERMITEE. 4. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITEE SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES WILL BE NECESSARY TO ENSURE COMPLETE SILTATION CONTROL ON THE PROPOSED SITE. P'JRING THE COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE PERMITEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY THE ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED, TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECEIVING DRAINAGE SYSTEM. 5. APPROVAL OF THIS PLAN IS FOR EROSION/SEDIMENTATION CONTROL ONLY. IT DOES NOT CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR RETENTION FACILITIES. 6. DURING THE TIME PERIOD OF OC t OBER 1ST THROUGH APRIL 30TH, ALL PROJECT DISTRIBUTED SOIL AREAS GREATER THAN 5,000 SQUARE FEET, THAT ARE TO BE LEFT UN -WORKED FOR MORE THAN 12 HOURS, SHALL BE COVERED BY MULCH, SODDING OR PLASTIC COVERING. 7. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER WORK IS ANTICIPATED FOR A PERIOD 30 DAYS OR MORE, ALL DISTURBED AREAS MUST BE IMMEDIATELY STABILIZED WITH MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL TREATMENT APPLICABLE TO THE TIME OF YEAR. GRASS SEEDING ALONE WILL BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL THROUGH SEPTEMBER, INCLUSIVE. SEEDING MAY PROCEED, HOWEVER, WHENEVER IT IS IN THE INTEREST OF THE PERMITEE, BUT MUST BE AUGMENTED WITH MULCHING, NETTING OR OTHER TREATMENT APPROVED BY THE CITY OF RENTON, OUTSIDE THE SPECIFIED TIME PERIOD. --8--� ,, S'^- SLOPES. . 9. 9. A TEMPORARY GRAVEL CONSTRUCTION ENTRANCE, SHALL BE LOCATED AT ALL POINTS OF VEHICULAR INGRESS AND EGRESS TO THE CONSTRUCTION SITE. EROSION CONTROL CONSTRUCTION SEQUENCE: 1. HOLD THE PRE -CONSTRUCTION MEETING. 2. FLAG CLEARING LIMITS (BY OWNER). 3. GRADE AND INST, .'-L CONSTRUCTION ENTRANCES. 4. INSTALL PERIMETER PROTECTION (SILT FENCE, BRUSH BARRIER, ETC). 5. GRADE AND STABILIZE CONSTRUCTION ROAD AS REQUIRED FOR MOVEMENT OF CONSTRUCTION EQUIPMENT. 6. CONSTRUCT SURFACE WATER CONTROLS (INTERCEPTOR DIKES, PIPE SLOPE DRAINS, ETC.) SIMULTANEOUSLY WITH CLEARING AND GRADING FOR PROJECT DEVELOPMENT. 7. MAINTAIN EROSION CONTROL MEASURES IN ACCORDANCE WITH KING COUNTY STANDARDS AND MANUFACTURER'S RECOMMENDATIONS. 8. RELOCATE SURFACE WATER CONTROLS OR EROSION CONTROL MEASURES, OR INSTALL NEW MEASURES SO THAT AS SITE CONDITIONS CHANGE, THE EROSION AND SEDIMENT CONTROL IS ALWAYS IN ACCORDANCE WITH THE KING COUNTY EROSION AND SEDIMENT CONTROL STANDARDS. 9. COVER ALL AREAS THAT WILL BE UNWORKED FOR MORE THAN SEVEN (7) DAYS DURING THE DRY SEASON OR TWO (2) DAYS DURING THE WET SEASON WITH STRAW, WOOD FIBER MULCH, COMPOST, PLASTIC SHEETING, OR EQUIVALENT. 10. STABILIZE ALL AREAS WITHIN (7) DAYS OF REACHING FINAL GRADE. 11. SEED OR SOD ANY AREAS TO REMAIN UNWORKED FOR MORE THAN 30 DAYS. 12. UPON COMPLETION OF THE PROJECT, STABILIZE ALL DISTURBED AREAS AND REMOVE BMPS IF APPROPRIATE. REVISION D=337506 SURVEYED: DESIGNED: R. HERMES DRAWN: J. BETZVOG CHECKED: BY DATE APPR APPROVED: SCALE: AS SHOWN ONE INCH AT FULL SCALE IF NOT ONE INCH SCALE ACCORDINGLY HYDRAULIC PROJECT APPROVAL (HPA) NOTES AND SPECIFICATIONS: THE CONTRACTOR IS RESPONSIBLE FOR COMPLIANCE WITH ALL PLAN PROVISIONS RELATED TO HYDRAULIC PROJECT APPROVAL AND MAY BE HELD LIABLE FOR ANY LOSS OR DAMAGE TO FISH LIFE OR FISH HABITAT THAT RESULTS FROM FAILURE TO COMPLY WITH THE PROVISIONS OF THE CONDITIONS RELATED TO HYDRAULIC PROJECT APPROVAL. THE CONTRACTOR MAY BE LIABLE FOR A CIVIL PENALTY OF UP TO ONE HUNDRED DOLLARS PER DAY AND/OR A GROSS MISDEMEANOR CHARGE, POSSIBLY PUNISHABLE BY FINE AND/OR IMPRISONMENT FOR FAILURE TO COMPLY WITH THE PROVISIONS OF CONSTRUCTION PLANS AND THE HYDRAULIC PROJECT APPROVAL. 2. THE CONTRACTOR SHALL BE RESPONSIBLE FOR COMPLYING WITH ALL CONDITIONS OF THE HYDRAULIC PROJECT APPROVAL (HPA) ISSUED BY THE WASHINGTON DEPARTMENT OF FISH AND WILDLIFE (WDFW) rNTITLED, "RIPLEY LANE STORM IMPROVEMENTS" ON FEBRUARY 11, 2008 AND PLANS DATED JANUARY 31, 2008, EXCEPT AS MODIFIED BY CONTRACT PLANS AND SPECIFICATIONS. A COPY OF THE HPA AND PLANS SHALL BE AVAILABLE ON SITE DURING CONSTRUCTION. 3. IF AT ANY TIME, AS A RESULT OF PROJECT ACTIVITIES, FISH ARE OBSERVED IN DISTRESS, A FISH KILL OCCURS, OR WATER QUALITY PROBLEMS DEVELOP (INCLUDING EQUIPMENT LEAKS OR SPILLS), IMMEDIATE NOTIFICATION SHALL BE MADE TO THE WASHINGTON EMERGENCY MANAGEMENT DIVISION AT 1-800-258-5990, AND TO THE AREA HABITAT BIOLOGIST (AHB). 4. NOTIFICATION REQUIREMENTS 4A. AT LEAST FIVE DAYS PRIOR TO STARTING WORK, THE CONTRACTOR SHALL NOTIFY THE CITY OF RENTON CONSTRUCTION MANAGER TO ALLOW NOTIFICATION OF THE WASHINGTON DEPARTMENT OF FISH AND WILDLIFE (WDFW) AREA HABITAT BIOLOGIST (AHB). 4B. AT LEAST 10 DAYS PRIOR TO STARTING ANY IN -WATER WORK, THE CONTRACTOR SHALL NOTIFY THE CITY OF RENTON PROJECT MANAGER TO ALLOW NOTIFICATION OF THE WASHINGTON DEPARTMENT OF FISH AND WILDLIFE (WDFW) AREA HABITAT BIOLOGIST (AHB). THE CONTRACTOR MAY REQUEST ASSISTANCE FROM WDFW ASSIST IN CAPTURING AND SAFELY MOVING FISH LIFE FROM THE JOB SITE TO FREE -FLOWING WATER. SUCH ASSISTANCE MAY BE GRANTED BY WDFW IF PERSONNEL ARE AVAILABLE. NO CHANGE IN CONTRACT SPECIFICATIONS OR COST WILL BE ALLOWED WHETHER OR NOT WDFW ASSISTANCE IS PROVIDED IN FISH MOVEMENT. 5. ALL CONSTRUCTION OF THE NEW CULVERTS AND THE NEW CHANNEL, INCLUDING WEIR STRUCTURES WILL BE TAKE PLACE ENTIRELY OUTSIDE OF THE EXISTING STREAM ORDINARY HIGH WATER MARK (OHWM) EXCEPT FOR THE FINAL CONNECTION OF THE STREAM AND BLOCKING OF THE EXISTING CULVERT. WORK BELOW THE OHWM SHALL OCCUR ONLY BETWEEN JUNE 15 AND SEPTEMBER 30 AND SHALL INCLUDE NOTIFICATION OF THE RENTON PROJECT MANAGER PRIOR TO INITIATION OF THE CONNECTION AS PROVIDED IN CONDITION 4.B. 6. IF HIGH FLOW CONDITIONS THAT MAY CAUSE SILTATION ARE ENCOUNTERED DURING THIS PROJECT, WORK SHALL STOP UNTIL THE FLOW SUBSIDES. 7. LOG WEIR ELEVATIONS SHALL BE INSTALLED WITH A MAXIMUM TOLERANCE FROM DESIGN ELEVATIONS OF +/- 0.1 FT. 8. OVERBURDEN MATERIAL RESULTING FROM THE PROJECT SHALL BE DEPOSITED IN DESIGNATED STOCKPILE AREAS APPROVED BY THE CITY OR REMOVED FROM THE SITE IMMEDIATELY UPON EXCAVATION TO AVOID ENTERING SURFACE WATERS. 9. DURING CONSTRUCTION TO CONNECT THE UPSTREAM PORTION OF THE REALIGNED CHANNEL TO THE EXISTING CHANNEL, THE STREAM WILL BE MAINTAINED TO FLOW INTO THE EXISTING 24-INCH CULVERT. REMOVAL OF THE REMAINING MATERIAL BELOW OHWM TO CONNECT THE NEW CHANNEL TO THE EXISTING STREAM CHANNEL WILL BE CONDUCTED WITHIN A DRY CHANNEL CREATED BY A TEMPORARY SAND BAG DAM AFTER FISH REMOVAL AND DEWATERING. 10. PRIOR TO DEWATERING THE AREA BEHIND THE SAND BAG DAM, THE CONTRACTOR SHALL CAPTURE AND SAFELY MOVE FOOD FISH, GAME FISH, AND OTHER FISH LIFE FROM THE AREA ISOLATED BY THE SAND BAG DAM AND MOVE THEM TO AN UNDISTURBED REACH OF THE STREAM PRIOR TO CONNECTION OF THE NEW CHANNEL. THE CONTRACTOR MAY REQUEST ASSISTANCE FROM WDFW ASSIST IN CAPTURING AND SAFELY MOVING FISH LIFE FROM THE JOB SITE TO FREE -FLOWING WATER. SUCH ASSISTANCE MAY BE GRANTED BY WDFW IF PERSONNEL ARE AVAILABLE. NO CHANGE IN CONTRACT SPECIFICATIONS OR COST WILL BE ALLOWED WHETHER OR NOT WDFW ASSISTANCE IS PROVIDED IN FISH MOVEMENT. 11. ANY DEVICE USED FOR DIVERTING WATER FROM THE FISH -BEARING STREAM SHALL BE EQUIPPED WITH A FISH GUARD TO PREVENT PASSAGE OF FISH INTO THE DIVERSION DEVICE PURSUANT TO RCW 77.57.010 AND 77.57.070. THE PUMP INTAKE SHALL BE SCREENED WITH 1/8-INCH MESH TO PREVENT FISH FROM ENTERING THE SYSTEM. THE SCREENED INTAKE SHALL CONSIST OF A FACILITY WITH ENOUGH SURFACE AREA TO ENSURE THAT THE VELOCITY THROUGH THE SCREEN IS LESS THAN 0.4 FEET PER SECOND. SCREEN MAINTENANCE SHALL BE ADEQUATE TO PREVENT INJURY OR ENTRAPMENT TO JUVENILE FISH AND THE SCREEN SHALL REMAIN IN PLACE WHENEVER WA, -R IS WITHDRAWN FROM THE STREAM THROUGH THE PUMP INTAKE.XX. ALL EQUIPMENT USED TO MAKE THE FINAL CONNECTION TO THE EXISTING STREAM SHALL BE PLACED OUTSIDE THE EXISTING AND NEW CHANNEL. 12. AFTER CONNECTION OF THE NEW STREAM CHANNEL AND REMOVAL OF THE TEMPORARY SANDBAG DAM, THE EXISTING 24-INCH CULVERT WILL BE BLOCKED IN THE FOLLOWING SEQUENCE. FIRST WITH A TEMPORARY SANDBAG DAM WILL BE INSTALLED, THEN FISH REMOVAL WILL TAKE PLACE WITHIN ThE BYPASSED REACH WHICH WILL INCLUDE ANY FISH FOUND IN THE EXISTING CULVERT BETWEEN THE UPSTREAM INLET AND THE DOWNSTREAM CONNECTION POINTS WITH THE EXISTING 60-INCH PIPELINE ON THE SEAHAWKS SITE. FISH REMOVAL WILL BE INCOMPLIANCE WITH CONDITION 9. DEWATERING WILL BE INCOMPLIANCE WITH CONDITION 10. THE EXISTING 24-INCH CULVERT WILL BE BLOCKED WITH A CONCRETE PLUG IN THE CULVERT. THE INLET STRUCTURE WILL BE COMPLETELY COVERED WITH QUARRY SPALLS 13. THE STREAM BANK AND BUFFER AREAS SHALL BE PLANTED IN ACCORDANCE WITH LANDSCAPE PLANS BY DECEMBER 31 OF THE YEAR OF INSTALLATION OF THE CULVERTS AND LOG WEIRS. PLANTINGS SHALL BE MAINTAINED BY THE CONTRACTOR AS NECESSARY FOR THREE YEARS TO ENSURE 80 PERCENT SURVIVAL OF EACH SPECIES OR A CONTINGENCY SPECIES AS PROVIDED IN THE LANDSCAPE PLANS. 14. EQUIPMENT USED FOR THIS PROJECT SHALL BE FREE OF EXTERNAL PETROLEUM -BASED PRODUCTS WHILE WORKING AROUND THE STREAM AND WETLANDS ASSOCIATED WITH THE STREAM. ACCUMULATION OF SOILS OR DEBRIS SHALL BE REMOVED FROM THE DRIVE MECHANISMS (WHEELS, TIRES, TRACKS, ETC.) AND UNDERCARRIAGE OF EQUIPMENT PRIOR TO ITS WORKING BELOW THE OHWL. EQUIPMENT SHALL BE CHECKED DAILY FOR LEAKS AND ANY NECESSARY REPAIRS SHALL BE COMPLETED PRIOR TO COMMENCING WORK ACTIVITIES ALONG THE STREAM AND WETLANDS ASSOCIATED WITH THE STREAM. 15. EXTREME CARE SHALL BE TAKEN TO ENSURE THAT NO PETROLEUM PRODUCTS, HYDRAULIC FLUID, FRESH CEMENT, SEDIMENTS, SEDIMENT -LADEN WATER, CHEMICALS, OR ANY OTHER TOXIC OR DELETERIOUS MATERIALS ARE ALLOWED TO ENTER OR LEACH INTO THE STREAM OR WETLANDS ASSOCIATED WITH THE STREAM. A= _ F�,ktit1-,r DATE: HORIZONTAL: NADD191988 83/1991 C TY 0E- RIPLEY LANE N. STORM SYSTEM IMPROVEMENT PROJECT 312'!/08 RENTON DAT 1 Planning/Building/Public Works Dept. \,L RELDBOOK: SURFACE WATER DRAINAGE, EROSION CONTROL DRAWPAGE:ING NO: EROSION CONTROL SEQUENCE AND HPA G5 NOTES AND SPECIFICATIONS SHEET: 5 OF20 -7 r_