NCD980602163_19911001_Warren County PCB Landfill_SERB C_Meeting with SPATCO-OCR

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RENOVATION OF THE P.C.B. LANDFILL
This report demonstrates the need for certain repairs to the
P.C.B. Landfill in Warren County. After a recent inspection of the
facility, there were a number of deficiencie s found.
At the time of the inspection there was found to be an
accumulation of leachate in the collection system. This level was
obtained by removing the collection pipe and taking an actual measure
of the fluid in the hole. This was found to be 42 feet. The
collection pipe is sloping at a rate of 1 foot drop per 3 feet of
horizontal length. Thus, using trigonometry the vertical head was
calculated to be 13.28 feet. Using this value the volume of leachate
was calculated, (see charts). There was found to be approximately
1,000,000 gallons of accumulated leachate.
This accumulated leachate demonstrates a n e ed for a properly
functional collection system.
The following is a list of recommended repairs, including the
leachate collection system as well as other note d deficiencies:
LIST OF RECOMMENDED DEFICIENCIES AND SOLUTIONS AT THE PCB LANDFILL.
1. Cable at front entrance inoperative
SOLUTION-Re-cement end post in ground
-Place lock on cable
Place warning sign on cable
2. Monitoring wells not of standard design
SOLUTION-Replace wells with 2" inner casing using monitoring
well standards and abandoning existing wells.
*Approximate cost per well -$2,750.00
3. Mis-aligned security fences accessing landfill
SOLUTION-Re-align using appropriate methods
4. Inoperative leachate detection probe
SOLUTION-Replace or repair unit
5. Inoperative leachate collection system
SOLUTION-Replace foot valve at end of collection pipe
-Repair various cracks and leaks in the system
*Cost of foot valve -$24.80
6. Inoperative irrigation system
SOLUTION-Replace combination foot valve/strainer on pump pickup
pipe
Replace missing flexible hose on sprinkler pipe
*Cost of foot valve -$24.80
WATER VOLUME CALCULATIONS WATER LEVEL IN FEET AS VERTICAL HEAD FT3 MEASURED ON LEACHATE PIPE ELEVATION IN FEET X y z GAL 0 -6.32 314 -316 0 -2 751 1001 2 15,000 112,200 6.32 -12.64 316 -318 2 -4 901 2001 2 36,000 269,23Cl 12.64 -18.96 318 -320 4 -6 1001 3001 2 60,000 448,800 18.96 -25.28 320 -322 6 - 8 1131 3191 2 72,094 539,26] 25.28 -31.60 322 -324 8 -10 125' 333' 2 83,250 622,710 31.60 -37.92 324 -326 10 -12 138' 350' 2 96,600 722,5ES 37.92 -44.24 326 -328 12 -14 1451 3631 2 . . 105 270 _]_~7 ,_t::o 328 -330 ---14 -16 -. , ·-T571 -381-, ----·-~· ·--' --·--44.24 -50.56 2 119,634 894,8S2 50.56 -56.88 330 -332 16 -18 169' 394' 2 133,172 996,127 S.6.88 -63.20 332 -334 18 -20 1811 4121 2 149,144 1,115,597 63.20 -69.52 334 -336 20 -22 194 1 4251 2 164,900 1,233,452 -•<-
ELEVATION
314 -316
316 -318
318 -320
320 -322
322 -324
324 -326
326 -328
328 -330
330 -332
332 -334
334 -336
GALLONS OF LEACHATE AT VARIOUS LEVELS
BASED ON POROSITIES
GALLON GALLON
100% POROSITY 40% POROSITY 50%
112,200 44,800 56,100
269,280 107,712 134,640
448,800 179,520 224,400
539,263 215,705 269,631
622,710 249,084 311,355
722,568 289,027 361,284
787,420 314,968 ·-3 9_8 17_!-0 ~. -·-·--894, 862 ____ --357,945 447,431
996,127 398,451 498,064
1,115,597 446,239 557,799
1,233,452 493,381 616,726
3111 9GD ·
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60%
67,32
161,56
269,28
323,55
373,62
433,54
472 45
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TOTAL ACCUMULATED LEACHATE
WATER LEVEL IN FEET AS
MEASURED ON LEACHATE PIPE ELEVATION
0 314
6.32 316
12.64 318
18.96 320
25.28 322
31 .60 324
37.92 326
TOTAL ACCUMULATED LEACHATE
FROM EACH LEVEL AT 40%
POROSITY IN GALLONS
0
44,880
152,592
332,112
547 ,817
796,901
1,085,928
_____________ ----J. _____ __:__.J-_..,.....=::====-~ LEACHATE LEVEL
44.24 328 l l.400.896)
50.56 330 1,758,841
56.88 332 2,157,292
63.20 334 2 ,603 ,53 1
69.52 336 3,096 ,912
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I i ,l l I I I I\ I FOOT TOP SOIL AR Tl FI C I AL LI ~; E R SYSTEM 2FOOT COM?:.CTEO CLAY LINEA ----'► ~< BRiiJGING 1,1,i.~•·· SOIL S PCB WASTE MIXTURE CONCEPTUAL PLAN CROSS-SECTION DETAIL "JM /11/ \f .,f-. ,',I rV/ \f1 · I LEACHATE COLLECTION SYSTEM ........ .. !:········································'··'··'·'·-'·'·'··'-'·'···"='·':'.'.·.·.·.·.·.·.·.·.·.·.:.:,:•······· 5 FOOT COM PAC TED CLAY LI t~ER "-----J;\\:\\\$,\\,;\\~I\\\ )J,\\i\ii:fo\;fi;W&\M.(iKM&ii\Mi'.\M:6 ARTIFICIAL LINER---,,=,=,,,,,,,,,,,,,,,,,,,,,=,========-=-=-=-=-=-=------_______ -~-~;~R,L EARTH Ar~ , _ -----. . LEACHATE OE TEC TIOtl SYSTEM FIGU9E 2. LEACH A TE R:C:\lu\'AL PIPES '7 ,; __, { .J NOT TO SCALE
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In conclusion, there is a definite need for a budget to take
care of these present needs as well as the ongoing maintenance and
operating costs.
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