HomeMy WebLinkAbout11/06/2024 - Observation Report - - 0 GREAT POND ROAD ENVIRONMENTAL
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PARTNERS
OBSERVA"TION R,EPORIIT
Date: November 6, 2024
To Mr.John Borgesi, PE,Town Engineer
Ms.Amy Maxner, Conservation Administrator
From Drew Gallant, PE, SE - Environmental Partners
Jamie Veillette, EIT- Environmental Partners
Subject North Lake Cochichewick Boat Launch
Soil Evaluation of Proposed Bioretention Areas#1 
On Tuesday, October 22, 2024, Environmental Partner's (EP) personnel, Drew Gallant(SE #14482)
and Tyler Pilch, arrived on-site at7:45AM to perform a soil evaluation of the proposed locations for
bioretention areas#1 and #2 at the North Lake Cochichewick Boat Launch in North Andover, MA.
The purpose of the site visit was to determine soil texture and estimated seasonal high groundwater
(ESHGW)within the limits of the proposed bioretention areas.
EP personnel met with the North Andover Town Engineer,John Borgesi, and a North Andover DPW
operator to review the soil testing procedure.Two test pits(TP-1 &TP-2)were excavated by the DPW
operator. Test pit locations are shown in Figure 1 on the following page of this report.
In summary,TP-1 and TP-2 consisted of Sandy Loam at the bottom of each test pit and both had the
presence of redoximorphic features, an indicator of estimated seasonal high groundwater(ESHGW).
Sand was observed in the B soil horizon forTP-1 while Loamy Sand was observed in the B soil
horizon for TP-2. Human transported material (HTM), or fill,was found in the uppermost soil horizon
for both test pits.A complete soil evaluation for each test pit is provided on page 2 of this report.
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Figure I ,.......Soil Evaluations of Test Pits 1 &2( -I & TP-2)
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The following soil evaluations were made at each of the test pits:
• Test Pit 1 (TP-1)- Existing grade = 117.4±
0 0- 1 6" HTM Fill
0 16- 65" Bw Sand (Gravelly)
0 65- 93"+ C Sandy Loam
0 Redoximorphic features(mottles) present at 68"(Elev. 111.7±)
0 No signs of standing/weeping water
0 No refusal encountered
• Test Pit 2 (TP-2)- Existing grade @ edge of basin = 117.9±
0 0- 36" HTM Fill
0 36- 58" Bw Loamy Sand (Gravelly; firm in place)
0 58- 92"+ C Sandy Loam
0 Redoximorphic features(mottles) present at 61"(Elev. 112.8±)
0 No signs of standing/weeping water
0 No refusal encountered
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