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GKRAGHTY & MITXlgR. INC. 201 W. Passaic Street, 3rd Floor Rochelle Park, NJ 07662 Main Number (201-909-0700) Telecopier Numbers (201-909-0567 & 0568) TO: FAX#: FROM: DATE: PROJECT* Caroline Kwan Thomas Danahv November PR013 01 - Tutu. St. Thomas DOCUMENT CONSISTS OF ______ PAGE<S) (INCLUDING THIS PAGE), of ** do aot receive «U lh» page* indicated, ptewe call our ofMntof tt 201-909-0700). DESCRIPTION: Revised Schedule - Pump Testa ___ MEMO/COMMENTS: n Tmda re-arranged scheduling due to political fafly at Ppur 2 - 24-Aour First iondav R6covef Tuesda. November 2nd Ste Test MW-6D Thursday - Sundav. 72,-hour Teat (8) MW-6D SENT BY:_____jd_L TOJ HHVd m T H H D O H - H V 1 9 = 0 1 TUT OO& 1701 26 'SO"~~'"l I *64866* 64866 GERAGHTY ,'& MILLER, INC. Environmental Services Ground Water Engineering tfvdrwarbnn Remediation October 30, 1992 Leonard Reed Department of Planning and Natural Resources 4SA Estate Nisky, Suite 231 St, Thomas, U.S. Virgin Islands 00802 Re: Tutu Aquifer Pumping Tests St. Thomas, U.S. Virgin Islands Dear Mr. Reed: As a result of recent water-level monitoring in the Tutu area, Oeraghty & Miller, Inc. has determined the Esglin supply wells are in operation. In order for Geraghty & Miller to perform the aquifer pumping tests, the Eglin supply wells will have to be shut off during the test period (see attached schedule). Geraghty & Miller is requesting the assistance of the Department of Planning and Natural Resources to contact the Eglin well owners regarding this subject. In addition, Geraghty & Miller is requesting the Eglin well owners to fill their cistern on the morning of Sunday, November 1, 1992, prior to the aquifer testing. If necessary, the Tutu Environmental Investigation Committee (TEIC) will provide a water distributor to fill their cistern during the aquifer testing period. If you have any questions, please call. Sincerely, GERAGHTY & MILLER, INC. cc: CMta* Ana Gloria Ramos - TEIC Caroline Kwan - USEP A Sally Odland - CDM Daniel A. Nachman Vice President/Project Director TUT O06 1702 201 Wbtt FUMfe Street, 3ni Ftoor-RocheUe Ftok, New Jec^ 07662.(201) 90EWTOO-FAX C201) 909^)367/(»« 20d HHVd HlTHHOOa - H'SO* . HV 19 = 01 26 '20 Tl Table 1. Anticipated Schedule for Pumping Tests, Tutu Service Station Investigation, St. Thomas, U.S. Virgin Islands. Date and Personnel Action Fri., Oct. 30, 1992 C. Moffott R. Ponciano A. Colberg W. Morales Soil Tech 7:30-8:30 a.m. - Collect water-level measurements. 8:30-9:30 a.m. - Re-set data recorders for delayed start at 10:00 a.m., log cycle intervals not exceeding 30 second intervals. 10:00 a.m. (or a few seconds after 10:00 a.m. but not before) - Start Step Test at MW-6; Step 0 at 2 gpm. Note steps are numbered 0 through 3 (4 steps). 11:00 a.m. - Begin Step 1 at MW-6 at 4 gpm. 12:00 (noon) - Begin Step 2 at MW-6 at 6 gpm. 13:00 - Begin Step 3 at MW-6 at 8 gpm. Snaffle, influent to tttBlttfl^flt svstem fof field GC mpd lab analysi|% 14:00 - End of Step Test Set pump rate to 2 to 8 gpm (depending on drawdown) for Monday's test Turn pump off. Record recovery. SampkJmtmfiQ! effluent fhr field GC. and lab analysis. 15:00 - End of recovery data collection. Remove/download data recorders. Collect water- level measurements. 16:00-17:00 - Reset data recorders; linear scale, 30 minute intervals for pre-pumping measurements over Saturday and Sunday. Mon., Nov. 2, 1992 C. Moffatt R. Ponciano D. McGregor A. Colberg W. Morales Soil Tech 7:30-8:30 - Collect water levels. 8:30-9:30 - Reset data recorders for delayed start at 10:00 a.m., log cycle intervals not exceeding 30 second intervals. GERAGHTY & MILLER, INC. _ .._THT. °°6 1703 H113HOOH - W^9* H V T Q : O I 2 6 ' Z Q ' I I 2 of 4 Table 1. Anticipated Schedule for Pumping Tests, Tutu Service Station Investigation, St. Thomas, U.S. Virgin Islands. Date and Personnel Action Tues., Nov. 3, 1992 C. Moffatt R, Ponciano D. McGregor (Soil Tech not onsite) 10:00 - Start 24-hour continuous rate pumping test at MW-6. Pump rate should have been preset on Friday (between 2 to 8 gpm). 11:30 - Sample influent to treatment system for field GC and. lab. analysis. 12:00 (noon) - Sample effluent for field GC and lab analysis. Continue to collect influent and .effluent every 2 hours for field QC analysis. Measure complete round of water-levels (including data recorders with drop pipes and non-data recorder locations) on an hourly basis until 14 hours (12:00 midnight) into pump teat After 14 hours manure complete rounds every 2 hours. 9:00 - Sample influent and effluenf for %flfjl flT lab analsis. 10:00 - End of 24-hour test. If possible "step" recorder to record recovery. Stop pump and record recovery. 14:00 - Check recovery. If recovery is equal to or greater than 85 percent complete, remove data recorders. Collect full round of water-level measurements. Wed., Nov. 4, 1992 C. Moffatt R. Pontiano D. McGregor Soil Tech 7:30-8:30 a.m. - Collect water-level measurements. 8:30-9:30 a.m. - Re-set data recorders for delayed start at 10:00 a.m., log cycle intervals not exceeding 30 second intervals. 10:00 a.m. (or a few seconds after 10:00 a.m. but not before) - Start Step Test at MW-6D; Step 0 at 8 gpm. Note steps are numbered 0 through 3 (4 steps). GERAGHTY & MILLER, INC H T T H H D O H - WSO* HV 1 9 = 0 1 TUT OO6 17O4 Z6 -ZO 'I I Pate 3 of 4 Table 1. Anticipated Schedule for Pumping Tests, Tutu Service Station Investigation, St. Thomas, U.S. Virgin Islands. Date and Personnel Action 11:00 a.m. - Begin Step 1 at MW-6D at 10 gpm. 12:00 (noon) - Begin Step 2 at MW-6D at 12 gpm. 13:00 - Begin Step 3 at MW-6D at 14 gpm. Sjjnjifi influent to treatment, system for fisld GC and lab analysis. 14:00 - End of Step Test. Set pump rate to 8 to 14 gpm (depending on drawdown) for Monday's teat. Turn pump off. Record recovery. Samp1« tlTHf TTIfllt effluent for field GC ab analsis. 15:00 - End of recovery data collection. Remove/download data recorders. Collect water- level measurements at data logger locations. 16:00 - 17:00 - Collect complete round of water- levels. Reset data recorders; linear scale, 30 minute intervals for pre-pumping measurements over Saturday and Sunday. Thurs., Nov. 5, 1992 C. Moffatt R. Ponciano D. McGregor Soil Tech 7:30-8:30 - Collect complete round of water-levels. 8:30-9:30 - Reset data recorders for delayed start at 10:00 a.m. , log cycle intervals not exceeding 5- minute intervals. 10:00 (or a few seconds after 10:00) - Start 72-hour continuous rate pumping test at MW-6D. Pump rate (between 8 to 14 gpm) should be preset based upon Friday's step test. Take manual measurements at pumping well for plotting of data. 11:30 - Sample influent to treatment ay&*nn far GC and lab. GERAGHTY & MILLER, INC. 90d XHVd 311HHDOH - W*?0* HV 19 = 01 TUT 006 1705 26 '20 'I I Table 1. Anticipated Schedule for Pumping Tests. Tutu Service Station Investigation, St. Thomas, U.S. Virgin Islands. Date and Personnel Action 12:00 - Sample effluent for field GC and lab. Continue to collect influent and effhjf nf SMTUUCS fflf field GC every 2 hours. Measure gflmtfJCJC round of water-levels (including data recorders with drop pipes and non-date recorder locations) on an hourly basis until 14 hours (12:00 midnight) into pump tort. After 14 hours, measure complete rounds every 2 hours. Fri., Nov. 6, 1992 C. Moffatt R. Ponciano A. Colberg D* McGregor Soil Tech Sat., Nov. 7, 1992 C. Moffatt R. Ponciano D. McGregor Soil Tech 10:00 - Twenty-four hours into test, influent and effluent fot field GC and lab analysis^. Evaluate data plotted from pumping well for delayed yield. If delayed yield is not present, stop test and record recovery. If possible, have recorder start new step just prior to turning pump off. 10:00 - Fourty-eight hours into test. influent and effluent for field GC and lah anallysis. If delayed yield is not present, stop test and record recovery. Sun., Nov. 8, 1992 C. Moffatt R. Ponciano D. McGregor Soil Tech 10:00 - Seventy-two hours into test. Simpk "fl"*"1* and effluent for field GC and lab analysis Stop test and record recovery. TUT OO6 1706 GERAGHTY & MILLER, INC. 90d HHVd H T I H H D O H - W^9* WV I 9 : 0 I 26 'ZO 'II