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HomeMy WebLinkAboutN2017-0115Beacrive, Newic IIYII"I IIIII" I�IIIIIII� II'III�I IIIIII I) Permit No: N2017-011 v '\ iVof Center Dport Beach, CA 92660 100 Newporth 4 Permit Counter Phone (949)644-3311 Project No in Online Inspection Request- www.newportbeachca.gov/Online ServicesCOPHRO-�j�� r-, - Inspection Requests Phone (949)644-3255 Job Address: 1 PUBLIC ROW NB Thomas:Guide: Description : Install one groundwater monitoring well for the groundwater monitoring at 1000 Irvine Avenue on Seagull Lane south of Sherrington Lane. Pavement restoration per City Standards. Parcel # : Legal Desc : Owner: CITY OF NEWPORT BEACH Contractor : BC2 ENVIRONMENTAL CORP Phone: Phone: 714-744-2990 Address : Address: 1150 W. TRENTON AVE ORANGE CA Contractor State Lic: 969758 Applicant: AECOM License Expire: 02 28, 2018 Phone: 213-593-8100 [ Address : 300 S. GRAND AVENUE, SUITE 800 LOS ANGELES, CA 90071 Business License : BT30026893 Business Expire : 02 28, 2018 Special Cond.: Pre -job inspection required. Workers' Compensation Insurance - - Traffic control per WATCH Carrier: TRAVELERS Policy No: DTJUB7E79315 W. C. Expire: 06 30, 2017 Permit Processing Fee : $241.00 Sewer Connection: $0.00 Total Fee : $1,066.00 Agreement Fee: $0.00 4TT Box Cover: $0.00 Paid : $0.00 Traffic control Plan Check : $0.00 Total Water Meters : $0.00 Balance : $1,066.00 Inspection Fee : $825.00 Water Meter Connection : $0.00 Receipt No: Refundable Deposit: $0.00 Total Water Meter Box: $0.00 Street Tree Fee : $0.00 Adjustment : $0.00 Processed By: Date : _/_/ Other Department : Date : Utilities Approval : Date: _/_/ Permit Denied Date �I Issued Permit /i Date : 2-/ `� Traffic Approval: Date: _/_/_ : _S�! General Services Approval : Date : _/_/_ wc�RKst��E�r Fort ENCROA�t���NT �E�M(T CITY OF NEWPORT BEACH PUBLIC WORKS DEPARTMENT. PROJEcr AODREss: 1000 Irvine Ave Newport Beach CA DETAILED DESCRIPTION OF PROPOSED WORK: Install one 2 inch GW monitoring well in the southbound Seagull Ln. Traffic control will be emplaced. Borehole will be airknifed to 7 feet below ground surface (bgs). A i GME 85 droll fag will advance 6 ine 1 hnflow Stern augers down-tc-26-feet bgs. Phone: 213 593-8100 APPLICANT: AECOM Email Address: Samuel.Ste hens aecom.com Mailing Address: 300 S. Grand Ave., Ste 800 City/State/Zip: 1 Los Angeles, CA 90071 Phone: 323 291-9595 OWNER: Equilon Enterprises LLC dba Shell Oil Products US Email Address: deborah. or shell.com Mailingg Address: City/State/Zip: 20945 S. Wilmington Newport, CA 90810 ALL CONTRACTOR INFORMATION IS REQUIRED -PLEASE COMPLETE CONTRACTOR: BCz Environmental Coro office Phone: 714-744-2990 Company (if different): Jobsite Phone: 213-798-1363 Other Phone: 213-996-2437 Email Address: SWalker bc2env.com Mailing Address: 1150 West Trenton Ave. CitylState/Zip: Orange, CA 92867 State License Number & Class: California, C-57# 969758 Expires: 2/28/18 ICity Business License Number: 1 BT30026893 Expires[; 2/28/17\ WORKERS COMPENSATION INSURANCE - Certificate of Insurance (Section 3800 Labor Code) Company: Lockton Companies Policy No: 3731577 Expires: 6/30/17 ...................:........:.::....::....::::..:.:........:...................... E's .FUN.DABL.E:U4P.OS.IT:INFARMQ'TION....Applicable,..»......::i:::: ......::':: f�efu:rist F'a`:able ..o...................... M..aili:Refiin'd:Toi:?:::....,.:::::: >5iii:is??:::::.;:.::..::::::` : >::::: .. ...... ............ ..... ... . .......... FOR OFFICE USE ONLY Special Conditions of Permit: ADDITIONAL APPROVALREQUIRED FROM THE FOLLOWING DEPARTMENTS Utilities: General Services: Traffic: Fire: 0 Other: Engineering Technician: Public Works Specialist: Date: Permit No. fausars/pbwlshared/ancroa<hlmaslets/epworkshael.xis Public Works Department 949-644.3311 Permit Processing Fee: Inspection Fee: " Public Works Only $241.011 I Public Works Field Inspection $165.00 Other Department $275.00 Utilities Field Inspection $121.00 General Services Inspection $165.00 Agreement Fee: Water Quality/Artificial Turf Inspection $108.00 Preparation of Report/Agreement $817.00 Document Recordation Fee $192.00 Refundable Deposit: TBD Monitoring Wells $502.00 Improvements TBD Street/Alley/Walk Closure: $65.00= Newspaper Rack Inspection $108.00 Traffic Control Plan Check 8-1/2" x 11" $65.00 Sewer Connection Fee $250.00 24" x 36" $143.00 4TT Box & Cover $64.00 Additional .�.. _ .__ O ,_.-.fTE ,_._. _._. � ._.� ._.—,_. THE FOLtOWIN(i.FTEMSREQUIREAPPROVAL.F.ROMTHE ..'�. Revenue.pivisian:�......�.. r.. .'..'. . 12EVENt1EDtV1§LQN.P:RIORTOPAYdAEIitTOFPEES .. ... .. Aaaruval; .. ....... ... .r (Vya'ter;Meter:; ;IristaNafidn: Charge; ::: $528;06 13% ":Meter .::......:....:: $50 25 :.. :: w0ec Meter. Bcixos:::.....:::::::....::1 11`.' Meter :.......:::: $12:1.50 ....::.For......... dewalk....(B Cover= Costj.. ) 111/2":Meter::::::.:.::::::$285.00 ....::1".Meter....13.00+37:00'.':::::: .. $50:00:....:1 11•1d`tur011eMeter' ' '•' ' '•'•'•'•'$700.00 ' ' ' '•'•':2'Meter'•'27:00+61.25•' ' ' ' '•'•. $88:25== 12"Meter;'''... ''''::$425.p0 :....::.:...::.:.:.....................1 F2':T a bin.. Meter ; $1345 QO ; • For Fra(fip ;&;A/tBy'. greas ($ox +;CoV�r ;Cost) . 3'Meter.... .....:...........:.. $3,31b.00....�..:1:'Meter•�:�19.00.#3800.�.�..�:...$51.OU..�.�.'. �4'.Meter . : $4,:730.00 ....:: 2":Meter.::2:7.00 :162.00:: :::::$188.00: 1 n„nnPrAr ................... Certificate of Compliance Fee (+100% of hriy over 3 hrs) $288.00 5200-5029 Development Services Fee (Plan check hourly) $155.00 5200-5015 Final Tract Map Checking Fee $2,488.00 5200-5026 Final Parcel Map Checking Fee - Moderate $2,48&00 5200-5027 Lot Line Adjustment Fee $1,079.00 5200-5028 Park Dedication Fee Zone _ TBD 405-470_ Street Easement/Vacation Fee (+100 i of hrly over4 hrs) $1,022.00 5200-5031 Street Tree Fee ($700 Planting Fee) TBD 030-2284 Engineering Tech: Total Amount Due: For Finance use only Per S ecialist Receipt No. r/users/pbw/shared/encroachlmasters/ep front and back masters/ G) Rev. 10/21/2016 epfeesheel As -revised 10/2112016 ALL UNDERGROUND WORK SHALL BE PERFORMED BY A LICENSED CONTRACTOR I Contact "Underground Service Alert" At Least 48-Hours in Advance of Any Excavation at 800.422-4133 TERMS AND CONDITIONS OF ENCROACHMENT PERMIT 1. Encroachment Permits may be taken out by the owner of benefited property or a licensed contractor. A licensed contractor must provide a "Letter of Authorization' to allow another party to pull a permit. An approved copy of the permit and construction plan shall be kept at the job site at all times. Work, which has been done prior to issuance of a permit, is subject to rejeclionlf ne. City reserves the right to void permit if work does not commence within 30 days after date of issuance. 2. The Permittee agrees to defend, indemnify and hold the City, its authorized agent, officers, representatives and employees harmless from any responsibility, liability, suit or action of any description arising out of any accident, loss or damage to persons or property occurring as a result of work undertaken under this permit. 3. All work shall be done in accordance with the approved plans, Standard Special Provisions and Standard Drawings of the City of Newport Beach, and in compliance with all applicable State laws and City ordinances. 4. Perri guarantees all work performed under this permit to be free of hidden and latent defects. Any failures shall be corrected within two weeks after notification to the satisfaction of the Public Works Director. 5. A valid State licensed contractor must perform all construction within the public right-of-way, unless waived by the Public Works Director. A valid State Contractor License Class A can perform any work in the public right-of-way. For construction or connection to water lines a valid State Contractor License Class C-34 is required. For construction or connection to sewer lines a valid State Contractor License Class C-42 is required. 6. All trenching and/or resurfacing shall conform to City Standard 105-L for parkway/roadway and City Standard 140-L, in the alley, where a minimum half -alley width resurfacing shall be provided, unless otherwise directed by the Public Works Dept. Contractors shall obtain permits to perform excavation or trench work from the California Division of Industrial Safety prior to commencing underground construction as required by State law. Walls and faces of all excavations over 5 feet in depth shall be protected by a shoring system, sloping of the ground, or other equivalent means. Trenches less than 5 feet in depth shall be guarded whenhazardousground movement may be expected. 7. The Public Works Department Inspectors must inspect all work in the Public right-of-way. Forms and subgrade must be inspected and approved before concrete is ordered/poured. Sewer, pipelines, and subgrade construction must be inspected and approved before backfilling, or applicant may be required to excavate site. Separate Utilities Department or General Services Department inspections may be required depending on scope of work performed. 8. All trench restoration must be inspected by the Public Works Department. No utility installation(s) shall be allowed over or within 5 feet of any City utilities, unless approved by the Public Works Department. Locate and pothole existing City -owned utilities (ie: water, sewer, or street lighting conduits) to verify locations. Maintain a one -foot clearance over or under existing City -owned utilities. Sewer cleanouts require VCP or PVC SDR35 be used with a 4TT box over the riser. 9. Properly lighted barricades must be provided and maintained around all trenches, excavations and obstructions. All signs, flags, lights and other warning and safety devices shall conform to the requirements of the current 'Manual of Warning Signs, Sights and Other Devices for the Use in Performance of Work Upon Highways", issued by the California Department of Transportation. If needed,' barricades can be obtained from the City at a charge of 810.00 per barricade per day, with a minimum charge of S35.00. It is the responsibility of the applicant to place barricades to protect the general public. Access to fire hydrants must be maintained at all times. 10, Work within or near beach sensitive areas will not be allowed during, City holidays, spring break, Memorial Day weekend, summer between June 15 and September 15, and during the holiday season from December 19 to January 1, unless approved by the Public Works Department. 1 L Any work that extends into traffic or parking lanes and impedes the normal flow of traffic requires the applicant to acquire a Temporary Street Closure Permit from the Public Works Department. Access for fire, police and emergency vehicles must be maintained at all times. Traffic Control must be per Work Area Traffic Control Handbook (WATCH). No nighttime traffic lane closures, unless prior approval has been granted. Any lane(s) closure on a major street will only be allowed between 9:00 a.m. and 3:00 p.m. (Monday thru Friday), unless approved by the Public Works Department. Any work affecting the State Highway's traffic or within the Slate Highway right-of-way will require a Caltrans Permit. All vehicles shall be lawfully parked. 12. This permit does not authorize the closure of sidewalks, streets, or alleys for construction access, storage of materials, or parking of construction vehicles unless detailed on an attached Temporary Street Closure. 13. Applicant must notify USA at 1-800-227-2600 2 days before starting any underground construction. Applicant must notify all affected residents 24 hours in advance of restricted access and any inconveniences. 14. Refuse or unused materials shall be removed within 24 hours after completion of the work. If not removed, the City may remove and bill the applicant. Coordinate alley closures with City's refuse pick-up days by calling 949-644-3066 for the collection schedule so service is not interrupted. To place a dumpsler or materials in the public right-of-way, a Temporary Street Closure Permit must be obtained from the Public Works Department. WORKER'S COMPENSATION INSURANCE (Section 3800 Labor Code) I certify that I have a Certificate of consent to self -insure, Certificate of Worker's Compensation Insurance, or a Certified Copy thereof , ��/ f Date: 3,Signature: ©r /:G7 �C�/jam CERTIFICATE OF EXEMPTION (Section 3800 Labor Code) I certify that in the performance of the work under this permit, 1 shall not employ any person so as to become subject to California Worker's Compensation Laws. If, after signing this certificate I become subject to the Worker's Compensation provisions of the State Labor Code, I must comply with the provisions of Section 3700 or this permit shall be deemed revoked. Date: Signature: CONTRACTOR LICENSE EXEMPTION As the Owner of the benefiting property, I certify I am personally performing all work in the Public Right -of -Way. Date: Signature: HOLD HARMLESS STATEMENT I understand that I am locating minor encroachments within the City Right-of- Way/Easement. As property owner it is my responsibility to maintain the encroachments. I will be responsible for replacing the improvements if the City removes them for maintenance of utilities or other public need. I shall indemnify and hold the City harmless for any liability associated with the minor encroachments. Date: 15. 16, 17, 18. 19. 20. 21, Signature: notice for Encroachment Permit Inspection is required by calling Works at 949-644-3311. Any above ground utility facilities will require documented approval from the adjacent affected property owner(s). Homeowner, contractors, and subcontracotrs may each be liable for violations of Water Quality Laws. Best Management Practices will be enforced. It is against the law to discharge construction debris into the gutter and storm drain. Felony violations of Water Quality Laws are punishable by fines up to S25,000 and/or up to three years in State prison plus the full cost to clean up an illegal discharge or spill. If a refundable deposit was paid, applicant must submit a Soils Compaction Certificate or Evidence of a Slurried Backfill and request a final inspection from the Public Works Department. Monies may be held for six months after final inspection before a refund will be processed. No trees in the public right-of-way shall be planted, removed, trimmed, or relocated without approval from the General Services Department. All work in the public right-of-way must meet the approval of the Public Works Department or corrections will be required (i.e. removals, exposing connections, etc.). Additional inspection fees may be required, Permit is for standard materials in the public right-of-way only, unless previously approved by Public Works and an Encroachment Agreement has been processed. Permit is valid for "description" of work noted on front only. Additional work performed may require issuance of a separate permit and/or additional fees. No work related to this encroachment permit shall be performed until the Public Works Department has issued this permit. Applicant hereby acknowledges helshehas read and. understands the terms and conditions of this permit and helsheagrees to abide by them. Permit is void if work is not commenced within 30 days after issua ce. -3 (i2...,/��ln� Permit fees are nonrefundable. "Date: Q, ,; $ignature: [,W _ RETul slc l wr yy s •� Ils•�5..��..ga5�—•y�4"j nEraNisroaas F... R�sr. swow.asuocx ,�M WESTCLLFFOR• Rwc F REraLsrwFs<� n0 SHER/NGTONFL. LEGEND was c umYDERD.OYED uwx MOwORNOMLusu ■ o v£u R11 LI nhcHL DATTSRc SVR. ElSTF .SSLPi 1 Y OPT' OEOGROBEETSR. Ga r.CBEICCnTgx 914 • SOIL R. v sw.Twnm R. OTT 0 oisrENsea lslnNoswiss a ♦ F R SENTER MNE.wo cc. a.c.: R—Y�N. BEDFORDLANE CORCNMO xoRM G.W ONG'R�F� m ■I 0 �o I aEraLSTOicS V IQQQ�D E� xEwPORLOEv3C4KWi M W-�49 /'1m" ` M N p EXTENDED SITE MAP SHOWING PROPOSED • e GROUNDWATER MONITORING WELL LOCATION so Tm YwTLw FF1T FORMER SHELL SERVICE STATION FIGURE 100E RNNE AVENUE NE RT EE .K CALIFORTS. � � �0� Project Name and Location: Former Shell Service Station Irvine Avenue Newport Beach, California Newpor Figure 3 MW-49 Proposed Well Diagram DEPTH WELL CONSTRUCTION DETAILS (ft bgs) GROUND Flush Mounted Well Box 0 SURFACE Locking Well Cap with bolt -down lid. Concrete = surface to 1 ft. Cement Grout with 5% bentonite = 1 ft. to 5 ft. 2" Sch. 40 blank PVC casing set from 0 ft. to 10 ft. 10 Bentonite Chips = 5 ft. to 8 ft. GROUNDWATER = -16.5 ft. bgs 20 No. 2/16 Monterey Sand Filter Pack set from 8 ft. to 26 ft. 30 2" Sch. 40 PVC, 0.010-inch slotted screen set from 10 ft. to 25 ft. Threaded PVC End Cap 40 8" borehole Total Depth of boring at approximately 26 feet below ground surface (bgs) Cement Grout with 5% Bentonite Bentonite Chip Seal 2-inch diameter 40 blank PVC well casing cemented in place 2- inch diameter 0.010-inch Slotted PVC Screen #2/16 Monterey Sand Filter Pack "'a /f wow• ,/,�'^+a„ *'''•.% 47w �'w..r�``• r�'`�`C cnuaoawA * f'`r �` "4.f{t�`'`,.,;.w is yt s'e•�. rr'y-„ Flr �.>,*'� ��`.y CV r?ar } ,"`'�,l 1 • !� - o j ` y li Ale, te i s r s•f��~�!�>` '��C� ``�s^�s tiY� /,J� �++•„%ll���� ��jtf{--�"^-�.1���� �;,.�,�I lts / / tf °i � r�° -tl 4) G'T a, "vf✓I �*`�". l�q jf Newport fz1t bSx' �f f \>F.4 rh"•�; lam-, ,[` j,l. +uama F, Fly% •,( �rl F rti" f �(ir !il y�✓" $ Zip, ben.,, Source: TOPOI CA—��—• ACOM _ 0 625 1250ft VICINITY MAP FORMER SHELL SERVICE STATION 1000 IRVINE AVENUE FIGURE 1 NEWPORT BEACH, CALIFORNIA 1RIiflC REWIPEMENTE: 5<.Sta n /uN, Ne.-nt<:v ITS my el !r<.v< ec.< Lirec..c< ev!'.9 v«+in9 I:cvn. C.1 . _ A 1w owUla v/A <msw< lm <nt +Tm .eVt . iI A11, A 2...III cY b.'t—llm. WC1iv9 H'cuzz : b cv gavw eY Cil, vI N<+P<vl Ri 11 e c<L zilI z "C' by IPI < <z plc« E w.UY i< hml pl "A Os oY/5 AS vt All < l<L ' la') I c 1, E Scn<e eu. 'I, A +ic9 n <ad•aY- Av i -< rtilmee P, n—.i —A "A" a /n9 n e-xcrv:<SI / +<e TRNflC CONTROL PLAN GENERAL NOTES: A Ic III zasy<I 11411 cl to crnT9 w M1 c+ < 1J<lic f11.1 1. "IttAl II 9A,, vccntc - zIt m<Y c< ' wg .,I.• c+ < L'r IT, mac.m<m r<l<eca A,., s IelYS%e ayss. c..ev wcl+erz, _. NI I,.m«t«f fedl Lv «'v R<L +Lx rteecrw e«E pl nq^l G:n<. c t C If, a 9 n„'IiAAC {9< Slcty of Cci,r S e SPIAR C t Cwcd L<ritts B. .Y CT.)IS.!. Q:L. cnt LI . All. C (CAT'.. E ) B YS111 leE Y City if Ev9««. L I, byt E nv :<9««. A t< < mb%L<v:IP <' 9<cf pa <iM pc nt t< .11 C<II IcmIp9MUTN. C.Il— SICICCIC I«,. c.< $IVK«EZSJ<c..:«<v..f (rncil i<at abn0v). c< <neIC n tle<nN <. a<nf< Y t< prcf «ve lner cv�,n.m..<.te..uG clt' 5it an aim <IZ'ScsOb« w;,, v wavSby ttvcT pvn:m/anp<<y<<d AS, CCCC'lcncaA, Cec.rccta ivRl Cr<nee ve9S<z< vz e<zm<v «cv ry EY s9:nz J Cmtrc<N" x� <.I«.ee rcf.te<tc vtsc<v..... <. 6w s«wn9 ecn pnu tp «nat+v<t.<+ c wiln 9c9f c<'in5 L<Y v w +:nq au. «E mtn xc'9<LSS `9nt. v 0M1�`u: .-C C'_CSEC' (C]C) <i9ns c' Tp<:I l 1. Ic<t :rti«w3 n<wgnc 'CPE EKH' (C37) SAz v-';< 1 ¢ a1m nav<.:m <re< a+:sls <etjcc<nl sce Ine Y<zx.N say vN Idlan.ng c11 l < L N Cae<cp<rmmt mee.as al me e. —I I. -I 9 eA, Iemp«cry fop g e O, Cw,Izc<Iw b­NY niln IA - t tmIC O Sa / pr n c AjTID mcca.ev G c Y^ s AnF—P. /R ). .I v t— r rem. evtm Scv ez p rev< AT e.: Y. T. CTCt ct« Y I 'CAUTON $T`EL PLATES ASEAO'v«.0/0< 'RCUCH RCAO' f9'f iv epwnce 01 .tutl ACC ir<91n9. SIGNS (ALL SIGNS 41ALL BE RETROCEN ECTOR12ED AND OF STMOAROf 512E MRS AREA WARNING SIGN$ SHALL BE ORANGE SIGN FACE.) C27 OPEN 'RENCH (CA COCA) C30 LANE CUiSEO (CA 0.10 W!-30./R) REVERSE CURT SUN (LEFTAIOH7) WI-G 9NCL HIAG ARHCW SON .-< T'NO-WAY TRNFlC IN NI Y'D-1 N.A. WGRK 14EA0 R2-I SPIED Ill- SIGN R[-2c XEEF RIGHT (SUPFLEUEaTAL SIGN TO BE vO_Ni D MONITORING WELL INSTALLATION SEAGULL LN. AT SNERINGTON PL. (LURING WORKING HOURS) LEco+o: _ E 5'I, G SLry ' C' 1 1b, ". AIN ING> IS M ISAPNNAC: u HE-. EANqCAD' O U OEU,IlI. XITx MHITE PFf EC':VE TAPE 2 � C PECIOV OE aAVF. T � ® POST NO STCFFNG S!G,NG SEAGULL LN. _ ' (25 MPH) w �'s we u a x Of ' J ". IS CONTRACTOR SHALL NNNTNN OPoYEWAY ACCESS AT ALL TYES. WI-6(L): i A — 'CI) mc,.cn Ws-R: 'Ili coa O wzo-1: O (CA <eeel • MARK A. REFOW17Z health• DIRECTOR RICHARD SANCHEZ ASSISTANT DIRECTOR CARE AGENCY • STEVE THRONSON DEPUTY AGENCY DIRECTOR REGULATORY/MEDICAL SERVICES LIZA FRIAS, REHS REGULATORY/ MEDICAL HEALTH SERVICES DIRECTOR ENVIRONMENTAL HEALTH ENVIRONMENTAL HEALTH 1241 E. DYER ROAD, SUITE 120 SANTA ANA, CA 92705 TELEPHONE: (714) 433-6000 FAX: (714) 754-1732 E-MAIL: ehealth@ochca.com November 18, 2016 Deborah Pryor Shell Oil Products US 20945 South Wilmington Avenue Carson, CA 90810 Subject: Second Quarter 2016 Groundwater Monitoring Report dated August 5, 2016 and Third Quarter 2016 Groundwater Monitoring Report dated October 21, 2016 Re: Shell Station 1000 Irvine Avenue Newport Beach, CA OCHCA Case #86UTI82 Dear Ms. Pryor: The Orange County Local Oversight Program (OCLOP) has reviewed the above referenced documents prepared by AECOM. The quarterly monitoring reports (QMR) summarize the results of the June 30 and September 8, 2016 groundwater monitoring events. After reviewing the QMRs, the OCLOP has the following comments: 1. The OCLOP noted in the report that many of the groundwater monitoring wells (MW-05, MW -20, MW-32 during second quarter and MW-05. MW-20, MW-21, MW-24, MW-26, MW-30, MW-31, and MW-32 during third quarter) are purged to dryness. These wells are then sampled shortly after purging which does not produce representative groundwater samples from the formation. Representative groundwater samples are required to move this site toward closure. Please determine an appropriate purge rate that can be sustained to achieve the removal of three purge volumes for these wells without going dry during future quarterly monitoring events. 2. The MTBE plume is not defined past 66 ppb in the down gradient direction. Please submit a work plan for additional assessment down gradient of MW-36 within 30 days of receipt of this letter. 3. The R2 values presented in the graphs included in the QMR are very low and show little correlation at many wells. In addition, the values reported do not provide substantial support for the continuation of monitored natural attenuation at this site given MTBE concentrations up Deborah Pryor November 18, 2016 Page 2 to 2,900 µg/L and a minimum 1,300 foot plume length which likely extends, at concentrations above the maximum contaminant level, beyond well MW-36. At this time, the OLCOP has determined that the elevated MTBE concentrations must be addressed. Please submit a Corrective Action Plan Addendum for alternative remediation to this Agency within 120 days of receipt of this letter. 4. The well inspection form indicates that one of two tabs need to be retapped for monitoring well MW-22. Please submit repair logs for these wells to this Agency within 30 days of receipt of this letter. In the future, well deficiencies must be remedied within 30 days of well inspection activities and should be documented within the corresponding monitoring report. 5. The third quarter QMR states that the cumulative volume of groundwater extracted between 1987 and 1991 is "unknown". Please note this information will be needed at time of case closure. Likewise the soil volume from the 1987 excavation is required, reported in either pounds or tons should be provided. Please include this information in the summary portion of future quarterly monitoring reports. 6. The OCLOP does not agree that with AECOM's statement that "chlorinated solvent concentrations (e.g. tetrachloroethene, trichloroethene, etc.) from an up gradient source are being detected within the TPHg range in up -gradient well MW-22 and to a lesser extent further to the east in well MW-46 and west in well MW-21. The TPHg concentrations in these wells are most likely higher than if they were not being impacted by contaminants from an up - gradient source." Based on an evaluation of the PCE, TCE, and TPHg concentrations, there does not appear to be a significant correlation between these chlorinated compounds and TPHg. In addition, in the absence of plume maps demonstrating the distribution of chlorinated compounds, it is not clear that the chlorinated compounds originate solely from an offsite source. Provide plume maps for chlorinated solvents in future reports. 7. In an effort to conserve the OCLOP's available filing space and to reduce paper usage, you are encouraged to submit future reports with double -sided tables, lab reports, and field documentation. If you have any questions, please contact me at (714) 433-6255. Sincerely, Denamarie Baker Hazardous Waste Specialist Hazardous Materials Mitigation Section Environmental Health cc: Carl Bernhardt, Santa Ana Regional Water Quality Control Board (electronic copy) Jeffrey Pyska, AECOM (electronic copy)