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Home My WebLink About2004-08-27 All Phase - Excavation & Soil Management Report - 1508/27/04 FRI 11 :13 FAX 651 436 3918 ALLPHASE CO INC 001/006 /DATE: August ?7.2004 AllPhase Comparnes, lncorporated 404 -A St. Croix Trail North, Lakcland, MN 55043 Phone: 65 1 -'136 -2930 FAX: 651 -i36 -3918 FAX COVER LETTER TO: l.I - ic Johnson Mark Wilde City olOak Park l leighls Bahr Construction, L.L.C. FAX 41: 651-439-0574 651- 439 -0484 FROM: David S. knkin SUUB.!ECT: Excnvntion and Sail Management Report Vacant Property. 15 131 N. 58' Si. , Oak lark Heights, MN M1 EssA(;! : Attached is our report minus the laboratory results. A final report will be presented when laboratory results are in. Hard Copy to Follow'? No Total rages Scot (including this): 6 l f you did not receive all or the pages, please calf (651) 436 -2930. Sincerely; David S. Jcrfl:in 08/27/04 FRI 11:13 FAX 651 436 3918 ALLPHASE CO INC E1 002/006 EXCAVATION AND SOIL MANAGEMENT Vacant Property 15431 North S8` Street Oak Park -Heights, MN 55082 A11!'hase Companies, Incorporated #1460-0413-13 August 27, 2004 AI l Phase Companies, incorporated •104 -11 Si, Croix frail Norili, 1,•,1CeI;iiul, MN 55043 Pttmie 651- 436 -2930 lrax: 6151.436 -3918 08/27/04 FRI 11:13 FAX 651 436 3918 ALLPHASE CO INC x]003/006 lNTROI)UCTI()N EXCAVATION ANI) SOIL MANAGEMENT Aill'hase C'Urllpanios. Incorporated, (AliPhase) was retained by Bahr Construction, (Bohr), to observe excavation activities. iacr•ecn for organic vapors and manage petroleum-contaminated soils, if encountered, associated with the small commercial ;ite once located at I tiell I N, 58` ,Str•c9c.1 iii Onk l ar i. I'ei; his, Minnesota (Figure 1). If.xcavation began on Att test 23. 2OO'I BACKGROUND I=ivc htrildinns rhai had existed on the site were retnovc,d earlier in the year. The City of Oak Park Heights staked out three; <uea Cilconcerr1 based on historical observations and reports ot'site activities believed to have impacted the on -site soils (Figure 2). Such alleged activities included dumping of automobile fluids onto the ground and piling engines on the bare ` °round. On August 18, 2001, three test pits were performed to 5 R below grade (b4) in relation to the three areas of concerti. 13Ltsed on screenin &, results, the only soils with results ,hove background were at Test Pit 2 at one foot bg. Laboratory analytical results for the ti sr pi's hod no detection of DRO. GRO or 13E1 X (benzene, ethylbcnzene, toluene grid total xylcncs). METHODOLOGY A 1 I NU MI) or u araic vapor reeler with a 10.2 eV lamp source was used to field screen soils for total organic vapors. Soil sLtrn les were collected from Freshly exposed surfaces. The soil samples were placed in re- sealable bags and allowed to warm hciisrc screcnin` ►, Hie sample. The soil screenings were done ill aCCOrclat1CC with the MPCA- approval protocol for this procedure. Mail samples collected r'or laborvor analysis were placed in laboratory - supplied containers refrigerated or p1nced no ico nracl tmnspor'ted viU chain -of- custody procedures to a laboratory certified by the Minnesota Department m ent of I lealth, Sheets ol`G -mil poly WCre• used at the babe ',Ind to cover stockpiles of" contaminated soil. Contaminated soils screening over 10 Ppm were placed on 6 -mil poly for later hauling to a thermal treatment facility. F!NI)!NC S C;ener•aaai Snit Screcnin and Snit tVtarl:r emelt! Soils were observed for staining and odor as well as field screened. Black and gray soil layers were field screened to determine whether they were stained or sirrtply contained organic carbon in association with an A Mail horizon. Soils with odors were Ltlso screened. Excavated clears soils were stockpiled and were also screened at /Multiple locations. Other than the locations discussed below., all screened soils land no detection of organic vapors. The results of screened ;fl- j)tsacc soils not associated with three contaminntion zones discussed below are presented in Table 1. Depth (t) 1 0.5 • I.0-1.5 6 2 3 Table 1—Soil Screening 4 Lab S; par ,Zing Location: 5 ND 6 ND ND ND t0 )1 r°a meter ,�..�...... �.... _. E3ottora N. Wall �. Sampling S. Wall 5 IIL Location E. Wall (S ft) W. Wall Stockpile Location 4 (1.0-1.5 RRL Bottom (7.s rt) .... _......_. ORO ,(3.7 _WI) 4 GRO ND 5 ND 7.5 < )e th (ft) ,�..�...... �.... _. E3ottora ..... ._....... N. Wall Sampling S. WAR ND Location E. Wall W. Wall - — 3.75 4 ND ND 5 ND 7.5 < 08/27/04 FRI 11:13 FAX 651 436 3918 ALLPHASE CO INC Excavation and Soft Manaigt irrerrt Vacant Property 15431, Oak Park Heights, MN 55082 3 Depth ( 11 12 1.0-L5 NO 2 Itit;adi nrs dirt in parts per million N fD ° • No detection Itieuclii��: :we U1 17tirt lau' rrri�!ii�Fa • 14 15 N ND) Samjg Location ! Ci ND 17 18 N] ND 19 ND 20 ND ND 13 Cylindrical Zone tolSnit C:oaat:imiia:itinn Table 2-- cr ing Results Table 3 - Summary of Laboratory Analytical Results 2 �Illnl e 'roject f146O- 04l3 -B • Tile excavated contaminated soil greater than 1 ppm was stockpiled for hauling and thermal treatment. A ;'nnc r 1 contaminntcd soil was encountered npproximately li; fl west or the eastern property boundary and at the center of the property r1 north-south direction. 11 started at approximately one foot bg. The contaminated arcaa was very meat' the staked area where Test Pit 2 was dug. Stained soils with strong; odors extended to 6 11 bg and were 3 -4 11 in cliarnt•ter. The stained soils and an adjLaccnt rind of unstained soils were excavated and stockpiled. Sidewall and bottom samples were collected gereenin2, and k oi•niory nn;alysis. ln-field screening showed no detection of or nic vapors above backLrota€nd. 3004/006 08/27/04 FRI 11:13 FAX 651 436 3918 ALLPHASE CO INC x}005/006 Excavation and Soil Mar•agemeni Vacant ProperIy 15431, oak Park 1 lciglats, MN 55082 Surface Soils ?at ('cti cr ()I IDrol erty Soils Witt: volatile organic eontp(Itin(l,k were dewcicd in the upper 6 inches at the center Date property (sec Figure 2). •!'lift soil in this zone wwi riiulti- laycre0 urad had so ne adherence that made them friable tts opposed to loose like the starrounclirr , soils, `file odor was noticed within an ',trett of approximately 15 11 in diameter, Soil screened in that area (1,ocat iora 3) had 3 pppat rt tonal organic vapors, A hthnr:linry sample was collected at 1-1,5 f bg (Location 4) alter soils wc,re rtkm* vcd tear stockpiling. Once A11P1aL receives teal r'esta11S, we will forward them along with a discussion, Nearby this zone was a layer o!`siand and minor debris Irom 1 -2 bg that had a taint petroleum fuel odor and screened 6 p •n (secs Figure 2), • files(' soils were :i1kn Stockpi Icd. Once A1lPhasc receives analytical results, we will forward them i1l011 with a discussion. 3 A11r'taase Project tf 1 460 -04B -1 Appr•o,ximaic1y 10 euhic yards cal contarniriatecl soil iron) the three locations ofcontaminated sons were stockpiled and liter haialCrl by and to Ali Environmental in Belle Plaine, Minnesota, for thermal treatment. Contaminated soil was stockpiled on aria covered with 6 -mil poly. The stockpile spantple was analyzed Igor DR O, GIZO, VOCs, the 8 RCRA metals and PCBs. Once AIlPhase receives analytical results, we will forward therm along with a discussion. CONCLUSION AND Lt COM MEN )ATI NS Conittrnin;Acd soils were encountered in three areas. two of them adjacent to each other. Each contaminated area was local in extent and depth. Approximately 10 cubic yards of contaminated soils were removed from the property. Based can our field obseirvat inn, it is our opinion that contaminated soils do not rcrriain in the area excavated during August 23 and 24, 20(04. Al!l ?hasc is waiting for laboratory: analytical results ror confirmation. We recommend that litture excavations be manr'ar,ed according to the protocols exorcised in this project. The 1 should be contacted ii soil is again encountered. Our recommendation and discussion i=: based on the data gathered and our understanding of the factors that influence laborato r analytical Y nl lical results. These opinions may be modified as new information is provided and or the scope of activities on the subject site are either expanded and /or modified. David S, Jcnkiit Project Manager l'r,vironrnental Division Rennie Smith Environmental Consultant Report Review 08/27/04 FRI 11:14 FAX 651 436 3918 ALLPHASE CO INC Rt" „1(?ri l i0,1 P Avenue North w 0 C3 „ • C $ W • W iC V I E1006/006