S01 Attachment 4 Daguey Dam Repair Drawings.pdf
PDF 8 MB Posted
- Attached to
- EWP Ajies and Daguey Dam Repairs Puerto Rico
- Solicitation number
- 12FPC324B0005
About this file
This document appears to be a set of design drawings for Daguey Dam in Puerto Rico released for interim review purposes only, and is not for construction, bidding, or permitting. The drawings provide details on the proposed repairs to the dam, including removing and installing new riprap, clearing vegetation, improving hydraulic capacity, removing and installing a new gauge on the riser structure, reseeding, and installing field fence.
The related federal contract opportunity is for the construction of the Daguey Dam repairs as well as repairs to the Ajies Dam, also in Puerto Rico. This is a total small business set-aside solicitation with an estimated value between $1,000,000 and $5,000,000. A bid guarantee of 20% of the bid price or $3 million, whichever is less, is required. The solicitation is being issued by the Department of Agriculture Under Secretary for Farm Production and Conservation. An organized site visit is scheduled for July 17, 2024.
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Natural Resources Conservation Service
United States Department of Agriculture
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LEGEND
TOP OF DAM CONTOUR
AUXILIARY SPILLWAY CREST CONTOUR
NORMAL POOL CONTOUR
TO ANASCO
ROUTE 404
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Δ
ROUTE 404
TO ANASCO
5.0:1 5.0:1
5.
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5.
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70' (21 M ) 124' (38 M)
230' (70 M
36' (11 M)
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'-0
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'-0
'-0
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1'-2" 2'-1" 1'-0"2'-1"1'-0"
1' -0
0' -2
7'-4"
6"
80.5°
2:
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KF EX PSW CL
20'-0"
SEE NOTE
#2 THIS
SHEET
CL
28'-6"11'-6" 11'-6"
14'-3"
2' -0
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1. AS-BUILT DRAWINGS FROM 1982 SHOW THAT COARSE AND
FINE DRAIN FILL SURROUND THE IMPACT BASIN AND IS
LOCATED BENEATH THE EXISTING ROCK RIPRAP AS PART
OF AN INTERNAL DRAINAGE SYSTEM. GEOTEXTILE SHALL BE
PLACED OVER EXPOSED COARSE AND FINE DRAIN FILL
PRIOR TO PLACEMENT OF ROCK RIPRAP OR COMPACTED
EARTH FILL. CONTRACTOR SHALL ENSURE THAT
CONSTRUCTION ACTIVITIES DO NOT DISTURB THE EXISTING
DRAIN FILL, DISTURBANCE AND OR DAMAGE TO THE
EXISTING DRAIN FILL WILL BE REPAIRED AT THE
CONTRACTOR’S EXPENSE.
2. IN DOWNSTREAM AREA OF OUTLET CHANNEL, PLACE
RIPRAP IN LOW AREAS IN ORDER TO BRING FINISHED
GRADE OF CHANNEL UP TO DESIGN ELEVATION. GRADE
CHANNEL ON 0.4% SLOPE TO DAYLIGHT, MAXIMUM OF 20
FEET DOWNSTREAM OF ROCK RIPRAP SURROUNDING
IMPACT BASIN.
20'-0"
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60'-0" (18.28 M
30'-0" (9.14 M)
2.9 :1
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APPROX. LIMITS
OF HEADCUT
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NOTES:
1. A DRAWING SHOWING THE LOCATIONS OF THE DRAINAGE WORKS AND ALL POLLUTION
CONTROL MEASURES SHALL BE KEPT IN ACCORDANCE WITH THE SWPPP.
2. CONTRACTOR SHALL INDICATE ON THE PLAN ALL PRODUCT SPECIFIC STORAGE AREAS AS
DESCRIBED IN THE SWPPP. THESE AREAS SHALL INCLUDE BUT ARE NOT LIMITED TO:
EQUIPMENT STORAGE, FUEL STORAGE, CONCRETE WASHOUT PITS, OR HAZARDOUS MATERIAL
STORAGE.
3. APPROXIMATELY 870 FEET OF SILT FENCE (SEDIMENT FILTER) IS SHOWN. CONTRACTOR SHALL
ADD LOCATIONS OF SILT FENCE TO PLAN AS REQUIRED.
4. SILT FENCE SHALL BE NON-WOVEN GEOTEXTILE AS SPECIFIED IN MS 592.
5. SEDIMENT FILTERS SHALL BE PROVIDED AT THE FOLLOWING LOCATIONS:
(A) ALONG THE DOWNSTREAM BOUNDARY OF ANY AREA WHICH IS STRIPPED OF EXISTING
VEGETATION AND/OR SURFACE MATERIAL DURING ANY PHASE OF CONSTRUCTION
ACTIVITY.
(B) ALONG THE DOWNSTREAM BOUNDARY OF ANY SOIL MATERIAL WHICH IS STOCKPILED
DURING ANY PHASE OF CONSTRUCTION ACTIVITY FOR MORE THAN 14 DAYS.
(C) OTHER AREAS WHICH ARE DETERMINED BY THE CONTRACTING OFFICER TO BE
POTENTIAL SEDIMENT SOURCES.
6. SEDIMENT FILTERS SHALL NOT BE USED WHERE CONCENTRATED FLOWS WHICH EXCEED ONE
CFS ARE EXPECTED, OR WHERE THE DRAINAGE AREA EXCEEDS TWO ACRES.
7. THE HEIGHT OF SILT FENCES SHALL NOT EXCEED 48 INCHES (HIGHER FENCES MAY IMPOUND
VOLUMES OF WATER SUFFICENT TO CAUSE FAILURE TO THE STRUCTURE.
8. SPLICES IN THE FILTER FABRIC ARE NOT RECOMMENDED. WHEN JOINTS ARE NOT AVOIDABLE, FABRIC SHALL BE SPLICED TOGETHER ONLY AT SUPPORT POST, WITH A MINIMUM OF 6-INCH
LAP.
9. POSTS SHALL BE SPACED A MAXIMUM OF 6 FEET APART AND DRIVEN SECURELY INTO THE
GROUND (MINIMUM OF 12 INCHES).
10. THE WIRE MESH SUPPORT FENCE MAY BE ELIMINATED BY USING EXTRA STRENGTH FILTER
FABRIC AND POST SPACED AT 4 FEET. IN THIS CASE, THE FABRIC IS STAPLED OR WIRED
DIRECTLY TO THE POST.
11. SEDIMENT FILTERS SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND DAILY
DURING PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE MADE IMMEDIATELY AFTER
EACH RAINFALL AND DAILY DURING PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE
MADE IMMEDIATELY.
12. SILT DEPOSITS SHOULD BE REMOVED AFTER EACH STORM EVENT. THEY MUST BE REMOVED
WHEN THE LEVEL OF DEPOSITS REACH APPROXIMATELY ONE-HALF THE HEIGHT OF THE
SEDIMENT FILTER.
13. SHOULD THE FABRIC ON A SILT FENCE DECOMPOSE OR BECOME INEFFECTIVE PRIOR TO THE
END OF THE PROJECT, THE FABRIC SHALL BE REPLACED PROMPTLY UNLESS WEEKLY
INSPECTION REPORTS INDICATE THAT THE REPLACEMENT IS UNNECESSARY.
LEGEND
SILT FENCE
PERMANENT GRASSING,
REFER TO CONSTRUCTION
SPECIFICATION 6 - SEEDING
SPRIGGING & MULCHING
RIPRAP
LIMITS OF CONSTRUCTIONLOC
CONTRACTOR STAGING
AND STOCKPILE AREA
WASTE AREA
NOTES:
1. STONE SIZE: 3"-5" (7.62 CM-12.70 CM) OPEN GRADED ROCK, CONFORMING TO MS-523, ROCK FOR RIPRAP.
2. LENGTH: AS EFFECTIVE BUT NOT LESS THAN 50' (15.24 M)
3. THICKNESS: NOT LESS THAN 8" (20.32 CM)
4. WIDTH: NOT LESS THAN FULL WIDTH OF ALL POINTS OF INGRESS/EGRESS.
5. WASHING: WHEN NECESSARY, VEHICLE WHEELS SHALL BE CLEANED TO REMOVE SEDIMENT PRIOR TO ENTRANCE
ONTO PUBLIC ROADWAY. WHEN WASHING IS REQUIRED, IT SHALL BE DONE ON AN AREA STABILIZED WITH CRUSHED STONE AND DRAINS INTO AN APPROVED TRAP OR SEDIMENT BASIN. ALL SEDIMENT SHALL BE PREVENTED FROM ENTERING ANY STORM DRAIN, DITCH OR WATERCOURSE USING APPROVED METHODS.
6. MAINTENANCE: THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION THAT WILL PREVENT TRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC ROADWAY. THIS MAY REQUIRE PERIODIC TOP DRESSING WITH ADDITIONAL STONE AS CONDITIONS DEMAND, AS WELL AS REPAIR AND CLEAN OUT OF ANY MEASURE DEVICES USED TO TRAP SEDIMENT. ALL SEDIMENT THAT IS SPILLED, DROPPED, WASHED OR TRACKED ONTO PUBLIC ROADWAY MUST BE
REMOVED IMMEDIATELY.
7. DRAINAGE: ENTRANCE MUST BE PROPERLY GRADED OR INCORPORATE A DRAINAGE SWALE TO PREVENT RUNOFF
FROM LEAVING THE CONSTRUCTION SITE.
8. PROVIDE GEOTEXTILE FABRIC BETWEEN NATURAL GRADE AND 3"-5" (7.62 CM-12.70 CM) ROCK.
PROFILE
PLAN VIEW
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6' (1.83 M)
MIN.
9' (2.74 M)
MIN
3' (0.91 M)
9"
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LEGEND
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