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O ENERGY n=
IT
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= —_ SSS VALVE CLOSE! \
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— = 6
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| i £ 260 MBS HO 0, - = ab = V1 7(DVY).
4 peddle LU {fg Hot oe gods:
PO * = ==) Le
| % we re HOSE os gas 4,
YOST RD) S28 = -
I 040, 01 — =2_ >
| g oS
I APPROXIMATE COMMAS
| LIMITS OF <i sy Es
I ASBESTOS
i Ho08 bot DISPOSAL
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= — oh
[7 =
LEGEND.
240 10-FOOT CONTOUR
2.FOOT CONTOUR
------- 500-FOOT RESIDENCE SETBACK
meme ANCHOR TRENCH
22 —_LANDFILL GAS CONVEYANCE PIPE
Hos2 LANDFILL GAS COLLECTION TRENCH
SSS S——= PERFORATED PIPE)
032
= LANDFILL GAS SURFACE COLLECTOR
42
ROAD CROSSING PIPE SLEEVE
APPROXIMATE AREA OF ASBESTOS
CONTAMINATED MATERIAL
RIP RAP
APPROXIMATE AREA OF EXISTING
SURFACE COLLECTION LAYER
VAR
LANDFILL GAS EXTRACTION WELL
Vo21(DW) LANDFILL GAS EXTRACTION WELL
WITH DEWATERING PUMP (DW)
Pros
REMOTE LFG EXTRACTION WELL
(WELLHEAD LOCATED ELSEWHERE)
@ WELLHEAD
> VALVE
° VERTICAL RISER
—— Fil —— _ 8° DEWATERING CONDENSATE MAIN
2"@ COMPRESSED AIR LINE
————— ——12'8— Sh =————
HO ee gk
aoe.
8° HEADER
DECOMMISSIONEL
YANUARY 2015,
NOTES:
4. EXISTING TOPOGRAPHY AND SITE FEATURES ARE BASED ON GROUND FIELD SURVEY
PERFORMED BY WSP USA INC. (WSP) OF MERRIMACK, NEWHAMPSHIRE ON JULY 28,
AUGUST 5, AND AUGUST 10,2020.
HORIZONTAL DATUM NAD83 (2001)
HORIZONTAL PROJECTION: NH STATE PLANE
VERTICAL DATUM: VD 26
2. THE EXISTING LANDFILL GAS EXTRACTION SYSTEM INFRASTRUCTURE SHOWN IS
BASED ON:
A. AS-BUILT SURVEY INFORMATION PREPARED BY OTHERS; AND
B. FIELD MODIFICATIONS TO THE LFG SYSTEM COMMUNICATED TO SANBORN HEAD
BY THE CITY OF NASHUA,
3. THE $00 FOOT RESIDENCE SETBACK LINE SHOWN HEREON WAS TAKEN FROM A PLAN
ENTITLED "FOUR HILLS LANDFILL, CITY OF NASHUA, NEWHAMPSHIRE, OVERALL SITE
PLAN" PREPARED BY CMA ENGINEERS, DATED OCTOBER 2008.
4. ACTUAL LOCATIONS OF INDIVIDIUAL FEATURES MAY BE DIFFERENT THAN SHOWN.
5. _ LIMITS OF ASBESTOS DISPOSAL WERE PROVIDED BY THE CITY OF NASHUA AND
SHOULD BE CONSIDERED APPROXIMATE.
“x
OTO774
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ae “ ij IN, »
Mos>
ord
Ce / SOK, So N
S ys ee
Yo UZPHASE Iho
4 STAGE II
Bi / g y
PHASE III
SANBORN |
GRAPHICAL SCALE
HEAD) =
420
CONCRETE BLOCK WALL CORRECTIVE ACTION PROJECT NUMBER:
DRAWN BY: O. HERNANDEZ CITY OF NASHUA
DESIGNED BY: O. HERNANDEZ FOUR HILLS LANDFILL 3066.21
D BY: E. STEINHAUSER NASHUA, NEW HAMPSHIRE
PROJECTMGR: R. CLAY SHEET NUMBER:
Pic) E, STEINHAUSER EXISTING CONDITIONS PLAN 1OF6
DATE: JANUARY 2021
TO. OnE DESORPTION m7
