J Conti Environmental, Inc, July 27,1998 RR300U8U M MAVERICK MAVERICK Construction Management Services, Inc. July 27,1998 Randy Sturgeon U.S. Environmental Protection Agency Region III 1650 Arch Street Philadelphia, PA 19103-2029 RE: Draft Work Plans Galaxy/Spectron Site Dear Randy: Please find enclosed a copy of the draft works plans for the removal action construction at the Galaxy /Spectron Site located in Elkton, Maryland for your review and approval. Included in this package are the draft Health and Safety Plan, Erosion and Sediment Control Plan, and the Project Execution Plan. Per your request, a copy of each plan has been sent directly to the Maryland Department of the Environment and the U. S. Army Corp of Engineers. We are targeting August 10, 1998 for mobilization to the site. If there is anything we can to expedite the approval of these work plans, please do not hesitate to call on us. If you have any questions, please contact me at (508) 733-2900 or page me at (800) 505- 4740. Si •lore Construction Manager cc: Michael Parr (w/o attachments) Rick Grills, MDE (w/attachments) Ramon Benitez, USAGE (w/attachments) P.O. Box 60700 197M Boston Post Road West King of Prussia, PA 19406 Suite 356 610-783-6202 Marlboro, MA 01752 610-783-6231 FAX RR300U85 508-485-7872 FAX 508-485-8340 GALAXY / SPECTRON SITE ELKTON, MARYLAND REMOVAL ACTION EXECUTION PLAN July 27,1998 TABLE OF CONTENTS CONTI ENVIRONMENTAL, INC SECTION DESCRIPTION PAGE NO. I. Introduction 1 II. Pre-Con struct ion Meeting 3 III. Mobilization 3 IV. Fence Removal and Reinstallation 5 V. Clearing and Grubbing 6 VI. Water Management 7 VII Demolition 11 VIII. Site Grading 12 IX. Installation of Concrete Cast-In-Place Cone. Walls 13 X. Groundwater Collection System 16 XI. Barrier Layer 17 XII. Protective Cover 19 XIII. Habitat Restoration 21 XIV. Demobilization 23 XV. Traffic Control Plan 24 GALAXY / SPECTRON SITE ELKTON, MARYLAND REMOVAL ACTION EXECUTION PLAN CONTI ENVIRONMENTAL, INC I. Introduction / A. Project Objective: The objective of this project is to physically separate the surface water flow in the Little Elk Creek from the subsurface dense non-aqueous phase liquid (DNAPL) impacted subsurface flow and to isolate, collect, and treat the DNAPL-impacted subsurface flow, however permanent treatment system installation is not part of this contract. This objective shall be accomplished by isolating the surface water flow in the creek, constructing grounHwatep cutoff walls atW upstream and downstream limit of the remedy, installing a groundwater collection system, installing a barrier layer along the stream bed, and installing a protective cover within the creek channel over the barrier layer, and reconstructing the riparian and stream habitat. Conti Environmental, Inc. (CEV) will perform this work in accordance with the approved 100% Design plans and specifications as submitted by Advanced GeoServices Corp. to the USEPA. A complete set of Contract Documents will be maintained in CEV's on-site field office as a Project Record / As-Built set of plans. The documents will be labeled as such and will not be used for any other purpose and will not be removed from the trailer under any circumstances. This set will be updated regularly as work progresses on the site. At the conclusion of the project, the plans will be forwarded to the Construction Manager as a formal submittal per the requirements of Section 01050 of the Contract Documents. Galaxy/Spectron Remedial Action Conti Environmental, Inc. Removal Action Execution Plan(Draft) 05/01/9&- ___ i Page 1 flR300l*87 B. Project Team p \ CEV organizational plan for thi galaxy/Spectron site is based upon fielding an experienced, independent project management team supported by key Corporate managers. The CEV project team consists of personnel experienced in hazardous waste site and Superfund remediation. The key personnel to be assigned to this project are outlined below. Resumes of the key personnel can be found in CEV's Proposal to Maverick Construction Management Services, Inc. dated jmW *> 1998. • Mr. James V. Stewart: Vice President of Operations • Mr. John Czapor: Director of Environmental Services • Mr. Al Aballo: Corporate Health and Safety Officer • Mr. Robert Scerbo: Project Estimator • Mr. Paul Dutko: Quality Control Officer • Mr. Leonard Nicaretta: Project Superintendent • Mr. Andrew C. Weber: Project Engineer/Manager • Mr. Carlos Narciso: Labor Foreman • Mr. Bruce Henderson: Health and Safety Officer (Haz-Tech Corp.) • Site Field Engineer: T.B.D. C. Sequence of Major Operations Removal Action Construction at the Galaxy/Spectron site involves numerous operations including but not limited to the following items. Each item will be discussed in detail within this report: • Submittals: Work Plans, Health and Safety Plan, etc. • Preconstruction Meeting • Mobilization • E&S Controls • Clearing and Grubbing • Water Management • Demolition • Site Grading / • Installation of Concrete^ casX-In-Place Concrete Walls s Galaxy/Spectron Remedial Action , j Conti Environmental, Inc. Removal Action Execution Plan(Draft) J 05/01/98 Page 2 HR300U88 Groundwater Collection System Water Diversion System Installation of Barrier la>jer Installation of Protective Layer Construction of Gabion Walls Habitat Restoration Demobilization II. Pre-Construction Meeting Prior to mobilization at the site, a Pre-Construction Meeting will be held at a location, date and time determined by Maverick Construction Service, Inc. (Construction Manager). This meeting will serve multiple purposes including but not limited to the following: • Introduce the Project Team • Review the Project Schedule • Review the work plans (Including the Health and Safety Plan) • Review the Health and Safety Plan ( Including the Air Monitoring Plan) • Discussion of required/non-required permits: Both at the Local & Gov't levels • Mobilization Issues: Field Office Coordination <;7b v /7'!"i> *i III. Mobilization Upon required approvals, CEV will commence mobilization operations. An area for the field office compound and material laydown areas will be prepared. The field offices consisting of mobile trailers will be set-up on the Plant property inside the entrance gate on the south end of the Plant prqperty. See Attachment No. 1, Site Plan for the proposed compound layout. The trailer compound will consist of two identical 12' x 60' office trailers. One will be for the use by Maverick Construction Management Services, Advanced GeoServices Corporation, Army Corps of Engineers, USEPA, and^laryiand Dept. of the Environment. The second trailer will be for CEV and it's subcontractors. A third, smaller trailer will be for the labor force to use as^kreakroom/lunch area. Telephone, electric and drinking water services will be installed as necessary. Galaxy/Spectron Remedial Action Conti Environmental, Inc. Removal Action Execution Plan(Draft) 05/01/98 Page 3 RR300U89 Material laydown areas will be located on the Plant property including under the existing canopy and on the non-plant side (east side) adjacent to Little Elk Lane. CEV intends to mobilize several pieces of equipment to be included with the initial activities. These will include a Komatsu PC-400 Excavator, Komatsu WA- 400 Loader or equal, 37-P Dozer, Combination Loader/Excavator, D300 Rear Dump truck and a Tool Container. Equipment mobilized on-site will be kept within the Plant property. ^ Water on site will be handled in the followin&4nanner. Drinking water will be supplied by a service such as Great Bear, de^onning water will be clean upstream water held in a 5000 Gal Tank on-site. A portable handwashing station will be set-up adjacent to the trailer compound along with an emergency eye wash station. c CEV will acquire the services of a Maryland Licensed Surveyor to perform ' : ,/• survey operations on site. The Surveyor's qualifications will be submitted to the Construction manager for review and approval. Upon approval, the Surveyor will mobilize on site, establish survey control per Plan Sheet No. 1 of the approved 100% Design and set the clearing limits at the direction of CEV and the Construction Manager. The trees within the clearing limits which are to remain will be clearly marked with survey ribbon. The Surveyor will establish the baseline survey and confirm the existing topography. The Surveyor will be responsible for maintaining site control throughout the project and layout of the major work operations/!.e. Groundwater Collection System, Concrete Walls, Rock Anchor Locations, etc/^The field equipment utilized by the Surveyor will 1>^"' enable him to collect necessary data in the field and download at their office in preparation of required As-Builts. All required health and safety and environmental monitoring will be implemented prior to the start of intrusive activity. The "kick-off meeting will incorporate this Site Specific Training and will be conducted by the Site Safety and Health Officer. CEV will monitor the perimeter of the site with photo-ionization detectors'(PID's) equipped with warning alarms to indicate when action levels are exceeded. A detailed discussion of perimeter monitoring will be included with the Site Health and Safety Plan under separate coyer, / Galaxy/Spectron Remedial Action Conti Environmental, Inc. Removal Action Execution Plan(Draft) 05/01/98 Page 4 AR300U90 Guy wires on existing utility poles within the Plant property which may interfere with the proposed work will be relocated at the direction of Delmarva Power Company. The guy wires will be realigned by the Engineering