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Home My WebLink About2005-124 V 6770 S. Washington Avenue • Suite 1 Titusville, Florida 32780 • USA GEOSYNTEC CONSULTANTS Tel. (321) 269-5880 • Fax (321) 269-5813 18 March 2005 Janet B . Dunlap , P . E . ------ Indian River County Fleet Management ( � 5235 41 " Street D Vero Beach, Florida 32960 ASR 2 � 2004 Subject : Limited Petroleum Site Assessment u Indian River County Fleet Management p pR J s 4450 41St StreetCAPITALf' FDEP Facility ID No . 318731794 Vero Beach, FL 32960 Dear Ms Dunlap : GeoSyntec Consultants (GeoSyntec) is pleased to submit this fee proposal to Indian River County Fleet Management (IRCFM) for professional services associated with the performance of a limited petroleum site assessment at the referenced site . GeoSyntec is in receipt of the Closure Assessment Report (CAR) which documented the closure of three, 10 , 000 gallon underground storage tanks (USTs) . Soil and groundwater samples collected during the performance of the UST closure activities identified petroleum constituents above Chapter 62 -777 , Florida Administrative Code (FAC) soil and groundwater cleanup target levels (CTLs) . Based upon these findings , the initiation of site assessment activities in accordance with Chapter 62 -770 , FAC , is required. Overview GeoSyntec reviewed the CAR prepared by American Environmental Associates , Inc . It should be noted that while a groundwater grab sample collected at the time of UST closure field activities detected petroleum constituents above groundwater CTLs (specifically benzene , ethylbenzene , toluene, and total xylenes) , and soil sampling results revealed an exceedance of the soil leachability CTL for acenaphthene , the concentrations detected were generally low. Based upon these findings , GeoSyntec recommends limited field activities initially, to assess the current groundwater concentrations (based upon 10-ft screened monitoring wells) and soil concentrations based upon organic vapor analyzer (OVA) field screening with the collection of limited additional soil samples for laboratory analysis . Based upon the findings of the limited- scope site assessment, it may be possible to obtain No Further Action (NFA) for the site , based upon the collection of limited additional data . XR050023 /XR05XXXX/IRC —Limited Petroleum Site Assessment GEOSYNTEC CONSULTANTS Janet B . Dunlap , P . E . 18 March 2005 Page 2 We have developed a task-based approach to group field activities and accomplish this work in an organized and cost- effective manner. The remainder of this letter provides a description of the proposed scope of work and a budget estimate to accomplish the work described herein (Attachment A) . PROPOSED SCOPE OF WORK Task 1 . Field Work Preparation Prior to initiating field activities, GeoSyntec will prepare a Site- Specific Health & Safety Plan (SSH& SP) , in accordance with the requirements of 29 CFR Part 1910 . Additionally, GeoSyntec will procure the drilling subcontractor, collect and organize the field sampling equipment, and coordinate the field work with IRCFM personnel . Task 2 . Field Activities Based on GeoSyntec ' s understanding of the work, we propose to complete the following tasks : • Using direct push technology (DPT) drilling equipment, GeoSyntec proposes to install two , 1 -inch diameter monitoring wells to an anticipated total depth of approximately 15 ft below land surface (BLS) , with 10 ft of 0 . 010 - inch slotted screen with a 20/40 pre-packed sand filter pack (groundwater noted in CAR at approximately 6 '/z ft BLS) . One monitoring well will be installed in the vicinity of the former fuel pumps and one monitoring well will be installed in the center of the former UST area. The monitoring wells will be completed with 24-inch by 24-inch concrete pads and 8 -inch diameter steel manholes . Following installation, each well will be developed until visibly free of particulates . Approximately 24 hours following monitoring well installation, the monitoring wells will be purged and sampled in accordance with Florida Department of Environmental Protection Standard Operating Procedures . Collected groundwater samples will be laboratory analyzed for volatiles by EPA Method 8021 (BTEX/MTBE) , polynuclear aromatic hydrocarbons (PAHs) by EPA Method 8310 , and total recoverable petroleum hydrocarbons (TRPH) by FL- PRO . • Soil hand auger returns will be collected from the ground surface to the water table (monitoring well locations and up to 10 additional soil boring locations) . Soil samples collected will be screened using an organic vapor analyzer (flame XR050023/XR05XXXX/IRC —Limited Petroleum Site Assessment mom GEOSYNTEC CONSULTANTS Janet B . Dunlap, P . E . 18 March 2005 Page 3 ionization detector) . Based upon the soil screening results , the two soil samples exhibiting the highest methane-corrected OVA response will be submitted for laboratory analyses . If no OVA meter responses are recorded above background levels, only one soil sample will be selected for laboratory analysis , and it will be collected from just above the water table in the immediate vicinity of the historical detection (SS - 5 location presented in the CAR) . The collected soil sample(s) will be laboratory analyzed for BTEX/MTBE by EPA Method 8021 , PAHs by EPA Method 8310 , and TRPH by FL-PRO . Based upon the laboratory analytical results , if any of the soil sample constituents exceed leachability based on groundwater criteria referenced in Chapter 62- 777 , FAC , the samples will be analyzed by the synthetic precipitation leaching procedure (SPLP) , to evaluate if the soil could leach to groundwater above the applicable CTL . • Install two piezometers using hand auger equipment to assist with evaluating the direction of groundwater flow . • Survey the top-of-casing elevations of the newly installed groundwater monitoring wells and piezometers to a relative datum . • Collect a set of groundwater level measurements in the piezometers and monitoring wells . Task 3 . Site Assessment Letter Following completion of the field activities , GeoSyntec will prepare a brief letter report on the findings . The letter report will include the following : • a brief summary of the field activities ; • summary tables of the soil and groundwater sampling results ; • basic Geographical Information System (GIS ) maps of the boring locations with approximate groundwater flow direction ; and • recommendations for further action, if necessary , or for an NFA, if appropriate . Please be advised that this report does not constitute a Chapter 62-770 , FAC , Site Assessment Report ( SAR) . A formal SAR may not be required based upon the results of the proposed field activities . Two draft copies of the letter report will be provided to IRCFM for review. Upon receipt of IRC review comments , five copies of the final letter report, which will be signed and sealed by a licensed Professional Engineer or Geologist, will be provided to IRCFM for submittal to Indian River County Department of Health and Brevard County Department of Natural Resources . XR050023 /XR05XXXX/IRC —Limited Petroleum Site Assessment GEOSYNTEC CONSULTANTS Janet B . Dunlap , P . E . 18 March 2005 Page 4 ASSUMPTIONS During the preparation of this proposal, GeoSyntec has made the following assumptions : • Access to sampling locations is not restricted to GeoSyntec . • All sampling can be performed in Level D personal protective equipment. • GeoSyntec will be able to work unimpeded between Monday and Friday from 7 am - 7 pm. • GeoSyntec and/or subcontractors will hand auger to a minimum depth of 5 ft BLS in an effort to located buried utilities prior to advancing borings . However, we assume that IRCFM will clear/mark utilities prior to GeoSyntec ' s arrival onsite and will "clear" each drilling location prior to GeoSyntec performing subsurface activities . Unmarked utilities that are damaged will not be GeoSyntec ' s responsibility. • GeoSyntec has assumed that liquids generated during the well development and sampling will be discharged directly onto the ground adjacent to the monitoring well (for percolation or evaporation) . • GeoSyntec has assumed that the DPT soil and groundwater investigation and well installations can be completed in one day. • GeoSyntec has assumed that top-of-casing elevations will not be surveyed by a professional licensed surveyor at this time . ESTIMATED COSTS GeoSyntec proposes to complete the proposed scope of work on a lump sum basis . The lump sum cost for the full scope of work (including SPLP analysis) and preparation of a letter report is $8,300 , the lump sum cost for completing the scope of work and letter report, but not performing SPLP analysis is $7,950 . Any tasks which IRCFM requests which are outside the defined scope of work will be completed in accordance with the hourly rate schedule negotiated with Indian River County . XR050023/XR05XXXX/IRC —Limited Petroleum Site Assessment GEOSYNTEC CONSULTANTS Janet B . Dunlap , P . E . 18 March 2005 Page 5 CLOSURE GeoSyntec appreciates the opportunity to submit this cost proposal to IRCFM . If this proposal is acceptable to you, please indicate your agreement by signing the attached work authorization (Attachment A), which references this proposal . Please return one signed work authorization to Ms . Weeks ' attention . Please call either of the undersigned with questions you may have as you review the scope of work and fee proposal . Sincerely, James J. Langenbach, P . E . Senior Engineer Nandra D . Weeks , P . E . Associate Attachments XR050023/XR05XXXX/IRC —Limited Petroleum Site Assessment GEOSYNTEC CONSULTANTS ATTACHMENT A WORK AUTHORIZATION XR050023/XR05XXXX/IRC —Limited Petroleum Site Assessment WORK AUTHORIZATION No. 990249 EFFECTIVE DATED In accordance with the Agreement for Professional Services between Indian River County Department of Utility Services ("Client"), and GeoSyntec Consultants, Inc . ("GeoSyntec"), dated 10 August 2004, this Work Authorization describes the services, schedule, and charges for GeoSyntec ' s services on the project known as : PERFORM A LIMITED SITE ASSESSMENT AT 4450 41sT STREET FLEET MANAGEMENT FACILITY CLIENT AUTHORIZED REPRESENTATIVE : Address : Telephone No : GeoSyntec Authorized Representative : Nandra Weeks or Jim Langenbach Address : 2258 Riverside Avenue or 6770 South Washineton Avenue Jacksonville, Florida 32204 Titusville, Florida 32780 Telephone No : (904) 388-8821 or (321 ) 269-5880 SERVICES. The scope of services, time schedule and charges are described in GeoSyntec ' s proposal dated 18 March 2005 attached to this Work Authorization, incorporated herein by reference . TERMS AND CONDITIONS . The terms and conditions of the Professional Services Agreement referenced above shall apply to this Work Authorization. Acceptance of the terms of this Work Authorization is acknowledged by the following signatures of the Authorized Representatives. SUBMITTED BY : APPROVED BY : BOARD OF COL Tv " ONERS GEOSYNTEC CONSULTANTS INDIAN RIVER CQUNTY, FLO A ,, (Consultant) i Solid Waste Dip (pal District g d e-000 By. By . r e Thomas A. Peel, Ph. D. , Secretary Thomas S. 4wither, Cf& d r. r Approved by BCC AprI 1' �,%" X005 Witnedo Attest: Jeffrey K. Barton, Clerk o Circuit Co By : , By : Anne H . Perry, Office Mana r Approved as to Form and Lig u iciency: 1 r ;' f ! By: 1, A�sistaup County Atto ey By: Claj%so J eph A . ird, County Administrator XR050023 /XR05XXXX/IRC —Limited Petroleum Site Assessment