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x x q LEGEND x Sx �x x W.L. = 26.2' Lx 3.8 x_j - x ¢ \ I \ x / I ® EXISTING COVANTA ENERGY VERTICAL GAS WELL x`_z� 4 I & EXISTING BELOW GRADE VERTICAL GAS WELL 2" HDPE CONDENSATE CONVEYANCE LINE 35.8 I - - 2" HDPE COMPRESSED AIR LINE 9x x i tOx4I/ - - - - - - - 18" HDPE BELOW GRADE HEADER / I x 3 .� �� ` / I -I-�-H-I--�H- 18" PVC HEADER ON PIPE SUPPORTS I I�� Brush � I SCALE / - EXISTING 4" HDPE WELL LATERAL --50 25 0 150 x Yp@2 - - - -- - \ EXISTING CONDENSATE PUMP STATION } �! N FLEX HOSE ( IN\FEET )\ \\ I / / 36.1 r. x / 35.1 x \ X I Rock , 4 .1x / x 35.2 LFG CONSTRUCTION NOTES: \ \ \f I PfI�S ' / / 35.6x \ \. x I I �. I / II 1 PROTECT EXISTING GAS SYSTEM IN-PLACE 34.6x \ x N4 . , --------�-- / I 4 .9x 2 SURVEY LOCATION PRIOR TO FINAL COVER PLACEMENT \\ - ----------------------- -----------40-"-� % � " 3 SALVAGE EXISTING WELL MANIFOLD/WELLHEAD ASSEMBLY \ 4 SALVAGE EXISTING 18" PVC/HDPE HEADER, 2" HDPE AIR LINE x 41.3 x x x \ x x x x x x x x x x x x x x z x x x o x 34.7 x AND CONDENSATE LINES, PIPE SUPPORTS, AND FLEX HOSES \ x 39.7 x 40. � _ x 40.4 x 1-3- 40 \ 40 O INSTALL TEMPORARY 4" PVC CAP ON HDPE WELL LATERAL ----------------------------------------------------------- _�� - � x (APPROXIMATELY 2' BELOW GRADE) ----- --------- -r` 6 INSTALLTEMPORARY 18" PVC CAP ON BELOW GRADE 18" x 39`` '-t--- �` k0 �� O PVC/HDPE HEADER (APPROXIMATELY 2' BELOW GRADE FOR HDPE) TTTTT .. . .. . LI TTLEJOHNS CREEK --- �� I �� 7 INSTALL TEMPORARY 2" CAP ON AIR LINE TEM PORARY,xIUAAEET�itLED o \ - -- - x ' g8 INSTALL TEMPORARY 2" CAP ON CONDENSATE LINE PRIOR TO PHASE 6 REMOVAL i ------ -- ----------------- --------I- ------ - - - ---------- f O9 INSTALL SALVAGED WELL MANIFOLD PER�ORe _ _ _ , - - - - - - - 40 1 1 - -x 40.5 OPE 40 x_41.7 --- -- x 41.8 �e -------- x 43. x 42.7 � �� I . _gyp 10 INSTALL 2" SCH 80 PVC PIPE & FITTINGS (LATERAL EXTENSION) x 42.8 ---- 11 INSTALL TEMPORARY WELL LATERAL EXTENSION PER 2 OR 3 /r ' i- -- -`� -� .. - - x 41.3 x 4 00 REMO E ND INS ALL ' ~' `�'''_��- -- !% - - �_ - - - 12 SALVAGE EXISTING ABOVE GRADE GAS HEADER PIPING \�\\ 1 I 13 CUT & CAP EXISTING COVANTA VERTICAL WELL CASING 2' BELOW x 50.3 x 57.1 I J x y �O + / x 41.5 Pipe GRADE AND SALVAGE WELLHEAD ASSEMBLY Him , I I I ((( x 42.1 x 6 I I 14 EXTEND WELL CASING & INSTALL WELLHEAD AFTER FINAL COVER PLACEMENT 1111111 I I 1111111 6 \ i I 1 x 15 INSTALL AND CONNECT TEMPORARY BELOW GRADE 8" HDPE JUMPER TO EXISTING 18 HDPE HEADER x ss.1 L ' Pile , 16 INSTALL TEMPORARY 2" HDPE AIR UNE JUMPER TO EXISTING AIR LINE INS Y� 70 C / / / 17 INSTALL TEMPORARY 2" HDPE CONDENSATE UNE JUMPER TO EXISTING 0 IDE 0 IP)G f pt) / / / x \ I O 2" CONDENSATE UNE I / �qi 42 9 x 18 INSTALL SALVAGED 18" PVC HEADER 0 HDPE AIR UNE FLARE S 'r',fiION \ 41 x j o AND 2" HDPE CONDENSATE LINES ON PIPE SUPPORTS Pe ER 80 I x 54.6 5oi ��j 1 19 INSTALL SALVAGED WELLHEAD PER 1 OR 2 , COVANTA ENERGY SUPPLEMENTAL GAS HEADER r \ 1 O e ' 20 INSTALL/DMD 4" HDPE WELL LATERAL PIPING TO HEADER OR MANIFOLD 90 ��/�� /�� ' I 21 ABANDON OR REMOVE TEMPORARY GAS, AIR, & CONDENSATE LINE JUMPERS � JOIN EXISTING 18" HDPE OR PVC HEADER, 2" HDPE AIR & CONDENSATE LINES IT, 'll --___- x 91.5 / �/� 40.9 x 41.1 x 41.4 1 14 II II I x 4o.s 1 3 REINSTALL COVANTA GAS SYSTEM ON GRADE Iiiliiiii �� 1 INSTALL SALVAGED FLEX HOSE PER (a ao x 40.5 I� ©5 EXTEND CONDENSATE PUMP STATION VAULT PER 1111111 / // I 1 141.8 c 1 © 2 HDPE COMPRESSED AIR AND CONDENSATE INSTALL SALVAGED 18" HOPE BELOW GRADE LINES 'PER S 1 II I I I I I / ©7 INSTALL SINGLE PIPE SUPPORT PER i x 40.2 x 40.6 x 40.7 x 40.9 x 40.9 x 41.2 1 8 to 9.2 x 40.6 INSTALL 10" x 6" PVC TEE OR SADDLE I I I o I II 111 1 I 9 REMOVE/SALVAGE EXISTING CONDENSATE PUMP STATION II III ' I / I 30 INSTALL SALVAGED CONDENSATE PUMP STATION II 111 st. 1 � II i f x 1 K 31 INSTALL 8" HDPE ELBOW LijI I I < 1 43 1 > 3 INSTALL 18" x 8" HDPE SADDLE X1.7 III J I 1 II 111 J f 33 INSTALL 14" x 8° PVC REDUCER it III I I I 34 INSTALL 14" PVC ELBOW 0 FLEX HOSE REDUCER I I x 40.1 x I 1 I ( ) x 40.5 x 40.6 x 40.7 x 40.9 40.9 " J ' x 41.2 1 i 35 INSTALL 8 HDPE FLANGE ADAPTER, BACK-UP RING, & HARDWARE LL I I III f 1 I 36 INSTALL 8° PVC FLANGE & HARDWARE I III I IIJI 1 „ HARD AR I I 1 II 3 INSTALL SALVAGED 18" PVC FLANGE & HARDWARE III I !!! 1 38 INSTALL SALVAGED 18"HDPE FLANGE ADAPTER & HARDWARE x 80-0111 I I I 39 INSTALL SALVAGED 18° x 4" HDPE LOW POINT TEE INSTALL 18" PVC BUND FLANGE & HARDWARE 1 � 41 INSTALL 6° CSP SLEEVE AT ROAD CROSSING x 40.9 x 40.8 x 41.4 x 40.2 x 40.5 x 40.6 1 i t x 6 .3 x�� J x 40.3 I � l I x OpROFESS,p� FORWARD LANDFILL y � N. STip�9�Fy� GAS SYSTEM REMOVAL PLAN BRYAN A. STIRRAT, & ASSOCIATES A CONSULTING CIVIL & ENVIRONMENTAL ENGINEERS w No. 22631 m STAGE IA PARTIAL FINAL CLOSURE CONSTRUCTION PLANS 1360 E. VALLEY VISTA DRIVE Exp. 12-31-05 DESIGNED BY R.M.G. SCALE AS SHOWN DIAMOND BAR, CALIFORNIA 91765 DRAWN BY : M.T.B./C.A.L. DATE 06-05 FILE NO.: 86303DB (909) 860-7777 rT1 IVI xP CHECKED BY R.M.G. DATE 06-05 �+ N0. REVISION DESCRIPTION BY: CA APPROVED BY B.A.S. DATE 06-05 SHEET G5 OF 26'