Stormwater Pollution Prevention Plan - Phoenix Sky Harbor ...

Non-mining MSGP 2010 General Permit
Benchmark values based on hardness and receiving waterbody
Water Hardness
Range
(mg/L)
For discharges to
perennial and
intermittent
waterbodies
Copper Zinc
(mg/L) (mg/L)
For discharges to
ephemeral
waterbodies
Copper Zinc
(mg/L) (mg/L)
0-25 0.0036 0.0362 0.0063 0.344
25-50 0.0070 0.0651 0.0121 0.618
50-75 0.0102 0.0918 0.0177 0.871
75-100 0.0134 0.1170 0.0233 1.112
100-125 0.0170 0.1417 0.0283 1.343
125-150 0.0197 0.1652 0.0341 1.568
150-175 0.0221 0.1883 0.0394 1.787
175-200 0.0228 0.2108 0.0447 2.001
200-225 0.0289 0.2329 0.0500 2.211
225-250 0.0316 0.2547 0.0552 2.417
250-275 0.0349 0.2761 0.0601 2.620
275-300 0.0378 0.2972 0.0655 2.821
300-325 0.0408 0.3181 0.0706 3.019
325-350 0.0438 0.3387 0.0757 3.214
350-375 0.0467 0.3591 0.0800 3.408
375-400 0.0496 0.3793 0.0859 3.599
8.A.7 Effluent Limitations Based on Effluent Limitations Guidelines (See also Part 6.2.2.1.)
Table 8.A-2 identifies effluent limits that apply to the industrial activities described below. Compliance
with these effluent limits is to be determined based on discharges from these industrial activities
independent of commingling with any other wastestreams that may be covered under this permit.
Table 8.A-2 1
Industrial Activity Parameter Effluent Limitation
pH
6.0 – 9.0 s.u.
Discharges resulting from spray down or
intentional wetting of logs at wet deck
storage areas
1
Monitor annually.
Debris (woody material
such as bark, twigs,
branches, heartwood, or
sapwood)
No discharge of debris that
will not pass through a
2.54-cm (1-in.) diameter
round opening
Stormwater Discharges Associated with Industrial Activity – Sector A 36